diff --git linux-libre-4.19.255-gnu1/Documentation/atomic_bitops.txt linux-libre-4.19.256-gnu1/Documentation/atomic_bitops.txt
index be70b32c95d9..bc3fac8e1db3 100644
--- linux-libre-4.19.255-gnu1/Documentation/atomic_bitops.txt
+++ linux-libre-4.19.256-gnu1/Documentation/atomic_bitops.txt
@@ -59,7 +59,7 @@ Like with atomic_t, the rule of thumb is:
  - RMW operations that have a return value are fully ordered.
 
  - RMW operations that are conditional are unordered on FAILURE,
-   otherwise the above rules apply. In the case of test_and_{}_bit() operations,
+   otherwise the above rules apply. In the case of test_and_set_bit_lock(),
    if the bit in memory is unchanged by the operation then it is deemed to have
    failed.
 
diff --git linux-libre-4.19.255-gnu1/Makefile linux-libre-4.19.256-gnu1/Makefile
index 96cbd0ff3a23..1fb75b292449 100644
--- linux-libre-4.19.255-gnu1/Makefile
+++ linux-libre-4.19.256-gnu1/Makefile
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 VERSION = 4
 PATCHLEVEL = 19
-SUBLEVEL = 255
+SUBLEVEL = 256
 EXTRAVERSION = -gnu1
 NAME = "People's Front"
 
@@ -876,6 +876,9 @@ LDFLAGS_BUILD_ID := $(call ld-option, --build-id)
 KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID)
 LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID)
 
+KBUILD_LDFLAGS	+= -z noexecstack
+KBUILD_LDFLAGS	+= $(call ld-option,--no-warn-rwx-segments)
+
 ifeq ($(CONFIG_STRIP_ASM_SYMS),y)
 LDFLAGS_vmlinux	+= $(call ld-option, -X,)
 endif
diff --git linux-libre-4.19.255-gnu1/arch/arm/boot/dts/aspeed-ast2500-evb.dts linux-libre-4.19.256-gnu1/arch/arm/boot/dts/aspeed-ast2500-evb.dts
index 2375449c02d0..10626452878a 100644
--- linux-libre-4.19.255-gnu1/arch/arm/boot/dts/aspeed-ast2500-evb.dts
+++ linux-libre-4.19.256-gnu1/arch/arm/boot/dts/aspeed-ast2500-evb.dts
@@ -5,7 +5,7 @@
 
 / {
 	model = "AST2500 EVB";
-	compatible = "aspeed,ast2500";
+	compatible = "aspeed,ast2500-evb", "aspeed,ast2500";
 
 	aliases {
 		serial4 = &uart5;
diff --git linux-libre-4.19.255-gnu1/arch/arm/boot/dts/imx6ul.dtsi linux-libre-4.19.256-gnu1/arch/arm/boot/dts/imx6ul.dtsi
index a6f2cd9839b6..d7d991a71f87 100644
--- linux-libre-4.19.255-gnu1/arch/arm/boot/dts/imx6ul.dtsi
+++ linux-libre-4.19.256-gnu1/arch/arm/boot/dts/imx6ul.dtsi
@@ -61,20 +61,18 @@
 			reg = <0>;
 			clock-latency = <61036>; /* two CLK32 periods */
 			#cooling-cells = <2>;
-			operating-points = <
+			operating-points =
 				/* kHz	uV */
-				696000	1275000
-				528000	1175000
-				396000	1025000
-				198000	950000
-			>;
-			fsl,soc-operating-points = <
+				<696000	1275000>,
+				<528000	1175000>,
+				<396000	1025000>,
+				<198000	950000>;
+			fsl,soc-operating-points =
 				/* KHz	uV */
-				696000	1275000
-				528000	1175000
-				396000	1175000
-				198000	1175000
-			>;
+				<696000	1275000>,
+				<528000	1175000>,
+				<396000	1175000>,
+				<198000	1175000>;
 			clocks = <&clks IMX6UL_CLK_ARM>,
 				 <&clks IMX6UL_CLK_PLL2_BUS>,
 				 <&clks IMX6UL_CLK_PLL2_PFD2>,
@@ -169,6 +167,9 @@
 		ocram: sram@900000 {
 			compatible = "mmio-sram";
 			reg = <0x00900000 0x20000>;
+			ranges = <0 0x00900000 0x20000>;
+			#address-cells = <1>;
+			#size-cells = <1>;
 		};
 
 		dma_apbh: dma-apbh@1804000 {
@@ -939,7 +940,7 @@
 			};
 
 			lcdif: lcdif@21c8000 {
-				compatible = "fsl,imx6ul-lcdif", "fsl,imx28-lcdif";
+				compatible = "fsl,imx6ul-lcdif", "fsl,imx6sx-lcdif";
 				reg = <0x021c8000 0x4000>;
 				interrupts = <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>;
 				clocks = <&clks IMX6UL_CLK_LCDIF_PIX>,
@@ -952,7 +953,7 @@
 			qspi: qspi@21e0000 {
 				#address-cells = <1>;
 				#size-cells = <0>;
-				compatible = "fsl,imx6ul-qspi", "fsl,imx6sx-qspi";
+				compatible = "fsl,imx6ul-qspi";
 				reg = <0x021e0000 0x4000>, <0x60000000 0x10000000>;
 				reg-names = "QuadSPI", "QuadSPI-memory";
 				interrupts = <GIC_SPI 107 IRQ_TYPE_LEVEL_HIGH>;
diff --git linux-libre-4.19.255-gnu1/arch/arm/boot/dts/qcom-pm8841.dtsi linux-libre-4.19.256-gnu1/arch/arm/boot/dts/qcom-pm8841.dtsi
index 2fd59c440903..c73e5b149ac5 100644
--- linux-libre-4.19.255-gnu1/arch/arm/boot/dts/qcom-pm8841.dtsi
+++ linux-libre-4.19.256-gnu1/arch/arm/boot/dts/qcom-pm8841.dtsi
@@ -25,6 +25,7 @@
 			compatible = "qcom,spmi-temp-alarm";
 			reg = <0x2400>;
 			interrupts = <4 0x24 0 IRQ_TYPE_EDGE_RISING>;
+			#thermal-sensor-cells = <0>;
 		};
 	};
 
diff --git linux-libre-4.19.255-gnu1/arch/arm/lib/findbit.S linux-libre-4.19.256-gnu1/arch/arm/lib/findbit.S
index 7848780e8834..20fef6c41f6f 100644
--- linux-libre-4.19.255-gnu1/arch/arm/lib/findbit.S
+++ linux-libre-4.19.256-gnu1/arch/arm/lib/findbit.S
@@ -43,8 +43,8 @@ ENDPROC(_find_first_zero_bit_le)
  * Prototype: int find_next_zero_bit(void *addr, unsigned int maxbit, int offset)
  */
 ENTRY(_find_next_zero_bit_le)
-		teq	r1, #0
-		beq	3b
+		cmp	r2, r1
+		bhs	3b
 		ands	ip, r2, #7
 		beq	1b			@ If new byte, goto old routine
  ARM(		ldrb	r3, [r0, r2, lsr #3]	)
@@ -84,8 +84,8 @@ ENDPROC(_find_first_bit_le)
  * Prototype: int find_next_zero_bit(void *addr, unsigned int maxbit, int offset)
  */
 ENTRY(_find_next_bit_le)
-		teq	r1, #0
-		beq	3b
+		cmp	r2, r1
+		bhs	3b
 		ands	ip, r2, #7
 		beq	1b			@ If new byte, goto old routine
  ARM(		ldrb	r3, [r0, r2, lsr #3]	)
@@ -118,8 +118,8 @@ ENTRY(_find_first_zero_bit_be)
 ENDPROC(_find_first_zero_bit_be)
 
 ENTRY(_find_next_zero_bit_be)
-		teq	r1, #0
-		beq	3b
+		cmp	r2, r1
+		bhs	3b
 		ands	ip, r2, #7
 		beq	1b			@ If new byte, goto old routine
 		eor	r3, r2, #0x18		@ big endian byte ordering
@@ -152,8 +152,8 @@ ENTRY(_find_first_bit_be)
 ENDPROC(_find_first_bit_be)
 
 ENTRY(_find_next_bit_be)
-		teq	r1, #0
-		beq	3b
+		cmp	r2, r1
+		bhs	3b
 		ands	ip, r2, #7
 		beq	1b			@ If new byte, goto old routine
 		eor	r3, r2, #0x18		@ big endian byte ordering
diff --git linux-libre-4.19.255-gnu1/arch/arm/mach-bcm/bcm_kona_smc.c linux-libre-4.19.256-gnu1/arch/arm/mach-bcm/bcm_kona_smc.c
index a55a7ecf146a..dd0b4195e629 100644
--- linux-libre-4.19.255-gnu1/arch/arm/mach-bcm/bcm_kona_smc.c
+++ linux-libre-4.19.256-gnu1/arch/arm/mach-bcm/bcm_kona_smc.c
@@ -54,6 +54,7 @@ int __init bcm_kona_smc_init(void)
 		return -ENODEV;
 
 	prop_val = of_get_address(node, 0, &prop_size, NULL);
+	of_node_put(node);
 	if (!prop_val)
 		return -EINVAL;
 
diff --git linux-libre-4.19.255-gnu1/arch/arm/mach-omap2/display.c linux-libre-4.19.256-gnu1/arch/arm/mach-omap2/display.c
index 5d73f2c0b117..dd2ff10790ab 100644
--- linux-libre-4.19.255-gnu1/arch/arm/mach-omap2/display.c
+++ linux-libre-4.19.256-gnu1/arch/arm/mach-omap2/display.c
@@ -211,6 +211,7 @@ static int __init omapdss_init_fbdev(void)
 	node = of_find_node_by_name(NULL, "omap4_padconf_global");
 	if (node)
 		omap4_dsi_mux_syscon = syscon_node_to_regmap(node);
+	of_node_put(node);
 
 	return 0;
 }
diff --git linux-libre-4.19.255-gnu1/arch/arm/mach-omap2/prm3xxx.c linux-libre-4.19.256-gnu1/arch/arm/mach-omap2/prm3xxx.c
index dfa65fc2c82b..30445849b5e3 100644
--- linux-libre-4.19.255-gnu1/arch/arm/mach-omap2/prm3xxx.c
+++ linux-libre-4.19.256-gnu1/arch/arm/mach-omap2/prm3xxx.c
@@ -711,6 +711,7 @@ static int omap3xxx_prm_late_init(void)
 	}
 
 	irq_num = of_irq_get(np, 0);
+	of_node_put(np);
 	if (irq_num == -EPROBE_DEFER)
 		return irq_num;
 
diff --git linux-libre-4.19.255-gnu1/arch/arm/mach-zynq/common.c linux-libre-4.19.256-gnu1/arch/arm/mach-zynq/common.c
index 6aba9ebf8041..a8b1b9c6626e 100644
--- linux-libre-4.19.255-gnu1/arch/arm/mach-zynq/common.c
+++ linux-libre-4.19.256-gnu1/arch/arm/mach-zynq/common.c
@@ -84,6 +84,7 @@ static int __init zynq_get_revision(void)
 	}
 
 	zynq_devcfg_base = of_iomap(np, 0);
+	of_node_put(np);
 	if (!zynq_devcfg_base) {
 		pr_err("%s: Unable to map I/O memory\n", __func__);
 		return -1;
diff --git linux-libre-4.19.255-gnu1/arch/arm64/boot/dts/qcom/ipq8074.dtsi linux-libre-4.19.256-gnu1/arch/arm64/boot/dts/qcom/ipq8074.dtsi
index f48d14cd10a3..bdee07305ce5 100644
--- linux-libre-4.19.255-gnu1/arch/arm64/boot/dts/qcom/ipq8074.dtsi
+++ linux-libre-4.19.256-gnu1/arch/arm64/boot/dts/qcom/ipq8074.dtsi
@@ -261,7 +261,7 @@
 			status = "disabled";
 		};
 
-		qpic_nand: nand@79b0000 {
+		qpic_nand: nand-controller@79b0000 {
 			compatible = "qcom,ipq8074-nand";
 			reg = <0x79b0000 0x10000>;
 			#address-cells = <1>;
diff --git linux-libre-4.19.255-gnu1/arch/arm64/boot/dts/qcom/msm8916.dtsi linux-libre-4.19.256-gnu1/arch/arm64/boot/dts/qcom/msm8916.dtsi
index 078ae020a77b..1832687f7ba8 100644
--- linux-libre-4.19.255-gnu1/arch/arm64/boot/dts/qcom/msm8916.dtsi
+++ linux-libre-4.19.256-gnu1/arch/arm64/boot/dts/qcom/msm8916.dtsi
@@ -1039,8 +1039,8 @@
 			vddmx-supply = <&pm8916_l3>;
 			vddpx-supply = <&pm8916_l7>;
 
-			qcom,state = <&wcnss_smp2p_out 0>;
-			qcom,state-names = "stop";
+			qcom,smem-states = <&wcnss_smp2p_out 0>;
+			qcom,smem-state-names = "stop";
 
 			pinctrl-names = "default";
 			pinctrl-0 = <&wcnss_pin_a>;
diff --git linux-libre-4.19.255-gnu1/arch/arm64/include/asm/processor.h linux-libre-4.19.256-gnu1/arch/arm64/include/asm/processor.h
index 773ea8e0e442..f81074c68ff3 100644
--- linux-libre-4.19.255-gnu1/arch/arm64/include/asm/processor.h
+++ linux-libre-4.19.256-gnu1/arch/arm64/include/asm/processor.h
@@ -172,8 +172,9 @@ void tls_preserve_current_state(void);
 
 static inline void start_thread_common(struct pt_regs *regs, unsigned long pc)
 {
+	s32 previous_syscall = regs->syscallno;
 	memset(regs, 0, sizeof(*regs));
-	forget_syscall(regs);
+	regs->syscallno = previous_syscall;
 	regs->pc = pc;
 }
 
diff --git linux-libre-4.19.255-gnu1/arch/arm64/kernel/armv8_deprecated.c linux-libre-4.19.256-gnu1/arch/arm64/kernel/armv8_deprecated.c
index 181c29af5617..7c69a203cdf8 100644
--- linux-libre-4.19.255-gnu1/arch/arm64/kernel/armv8_deprecated.c
+++ linux-libre-4.19.256-gnu1/arch/arm64/kernel/armv8_deprecated.c
@@ -62,6 +62,7 @@ struct insn_emulation {
 static LIST_HEAD(insn_emulation);
 static int nr_insn_emulated __initdata;
 static DEFINE_RAW_SPINLOCK(insn_emulation_lock);
+static DEFINE_MUTEX(insn_emulation_mutex);
 
 static void register_emulation_hooks(struct insn_emulation_ops *ops)
 {
@@ -210,10 +211,10 @@ static int emulation_proc_handler(struct ctl_table *table, int write,
 				  loff_t *ppos)
 {
 	int ret = 0;
-	struct insn_emulation *insn = (struct insn_emulation *) table->data;
+	struct insn_emulation *insn = container_of(table->data, struct insn_emulation, current_mode);
 	enum insn_emulation_mode prev_mode = insn->current_mode;
 
-	table->data = &insn->current_mode;
+	mutex_lock(&insn_emulation_mutex);
 	ret = proc_dointvec_minmax(table, write, buffer, lenp, ppos);
 
 	if (ret || !write || prev_mode == insn->current_mode)
@@ -226,7 +227,7 @@ static int emulation_proc_handler(struct ctl_table *table, int write,
 		update_insn_emulation_mode(insn, INSN_UNDEF);
 	}
 ret:
-	table->data = insn;
+	mutex_unlock(&insn_emulation_mutex);
 	return ret;
 }
 
@@ -250,7 +251,7 @@ static void __init register_insn_emulation_sysctl(void)
 		sysctl->maxlen = sizeof(int);
 
 		sysctl->procname = insn->ops->name;
-		sysctl->data = insn;
+		sysctl->data = &insn->current_mode;
 		sysctl->extra1 = &insn->min;
 		sysctl->extra2 = &insn->max;
 		sysctl->proc_handler = emulation_proc_handler;
diff --git linux-libre-4.19.255-gnu1/arch/ia64/include/asm/processor.h linux-libre-4.19.256-gnu1/arch/ia64/include/asm/processor.h
index 10061ccf0440..bbbdeeed702c 100644
--- linux-libre-4.19.255-gnu1/arch/ia64/include/asm/processor.h
+++ linux-libre-4.19.256-gnu1/arch/ia64/include/asm/processor.h
@@ -552,7 +552,7 @@ ia64_get_irr(unsigned int vector)
 {
 	unsigned int reg = vector / 64;
 	unsigned int bit = vector % 64;
-	u64 irr;
+	unsigned long irr;
 
 	switch (reg) {
 	case 0: irr = ia64_getreg(_IA64_REG_CR_IRR0); break;
diff --git linux-libre-4.19.255-gnu1/arch/mips/cavium-octeon/octeon-platform.c linux-libre-4.19.256-gnu1/arch/mips/cavium-octeon/octeon-platform.c
index 4d83f5bc7211..54c8389decda 100644
--- linux-libre-4.19.255-gnu1/arch/mips/cavium-octeon/octeon-platform.c
+++ linux-libre-4.19.256-gnu1/arch/mips/cavium-octeon/octeon-platform.c
@@ -86,11 +86,12 @@ static void octeon2_usb_clocks_start(struct device *dev)
 					 "refclk-frequency", &clock_rate);
 		if (i) {
 			dev_err(dev, "No UCTL \"refclk-frequency\"\n");
+			of_node_put(uctl_node);
 			goto exit;
 		}
 		i = of_property_read_string(uctl_node,
 					    "refclk-type", &clock_type);
-
+		of_node_put(uctl_node);
 		if (!i && strcmp("crystal", clock_type) == 0)
 			is_crystal_clock = true;
 	}
diff --git linux-libre-4.19.255-gnu1/arch/mips/kernel/proc.c linux-libre-4.19.256-gnu1/arch/mips/kernel/proc.c
index f8d36710cd58..d408b3a5bfd5 100644
--- linux-libre-4.19.255-gnu1/arch/mips/kernel/proc.c
+++ linux-libre-4.19.256-gnu1/arch/mips/kernel/proc.c
@@ -168,7 +168,7 @@ static void *c_start(struct seq_file *m, loff_t *pos)
 {
 	unsigned long i = *pos;
 
-	return i < NR_CPUS ? (void *) (i + 1) : NULL;
+	return i < nr_cpu_ids ? (void *) (i + 1) : NULL;
 }
 
 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
diff --git linux-libre-4.19.255-gnu1/arch/mips/mm/tlbex.c linux-libre-4.19.256-gnu1/arch/mips/mm/tlbex.c
index 620abc968624..a97b3e5a1c00 100644
--- linux-libre-4.19.255-gnu1/arch/mips/mm/tlbex.c
+++ linux-libre-4.19.256-gnu1/arch/mips/mm/tlbex.c
@@ -630,7 +630,7 @@ static __maybe_unused void build_convert_pte_to_entrylo(u32 **p,
 		return;
 	}
 
-	if (cpu_has_rixi && !!_PAGE_NO_EXEC) {
+	if (cpu_has_rixi && _PAGE_NO_EXEC != 0) {
 		if (fill_includes_sw_bits) {
 			UASM_i_ROTR(p, reg, reg, ilog2(_PAGE_GLOBAL));
 		} else {
@@ -2559,7 +2559,7 @@ static void check_pabits(void)
 	unsigned long entry;
 	unsigned pabits, fillbits;
 
-	if (!cpu_has_rixi || !_PAGE_NO_EXEC) {
+	if (!cpu_has_rixi || _PAGE_NO_EXEC == 0) {
 		/*
 		 * We'll only be making use of the fact that we can rotate bits
 		 * into the fill if the CPU supports RIXI, so don't bother
diff --git linux-libre-4.19.255-gnu1/arch/nios2/include/asm/entry.h linux-libre-4.19.256-gnu1/arch/nios2/include/asm/entry.h
index cf37f55efbc2..bafb7b2ca59f 100644
--- linux-libre-4.19.255-gnu1/arch/nios2/include/asm/entry.h
+++ linux-libre-4.19.256-gnu1/arch/nios2/include/asm/entry.h
@@ -50,7 +50,8 @@
 	stw	r13, PT_R13(sp)
 	stw	r14, PT_R14(sp)
 	stw	r15, PT_R15(sp)
-	stw	r2, PT_ORIG_R2(sp)
+	movi	r24, -1
+	stw	r24, PT_ORIG_R2(sp)
 	stw	r7, PT_ORIG_R7(sp)
 
 	stw	ra, PT_RA(sp)
diff --git linux-libre-4.19.255-gnu1/arch/nios2/include/asm/ptrace.h linux-libre-4.19.256-gnu1/arch/nios2/include/asm/ptrace.h
index 642462144872..9da34c3022a2 100644
--- linux-libre-4.19.255-gnu1/arch/nios2/include/asm/ptrace.h
+++ linux-libre-4.19.256-gnu1/arch/nios2/include/asm/ptrace.h
@@ -74,6 +74,8 @@ extern void show_regs(struct pt_regs *);
 	((struct pt_regs *)((unsigned long)current_thread_info() + THREAD_SIZE)\
 		- 1)
 
+#define force_successful_syscall_return() (current_pt_regs()->orig_r2 = -1)
+
 int do_syscall_trace_enter(void);
 void do_syscall_trace_exit(void);
 #endif /* __ASSEMBLY__ */
diff --git linux-libre-4.19.255-gnu1/arch/nios2/kernel/entry.S linux-libre-4.19.256-gnu1/arch/nios2/kernel/entry.S
index 1e515ccd698e..af556588248e 100644
--- linux-libre-4.19.255-gnu1/arch/nios2/kernel/entry.S
+++ linux-libre-4.19.256-gnu1/arch/nios2/kernel/entry.S
@@ -185,6 +185,7 @@ ENTRY(handle_system_call)
 	ldw	r5, PT_R5(sp)
 
 local_restart:
+	stw	r2, PT_ORIG_R2(sp)
 	/* Check that the requested system call is within limits */
 	movui	r1, __NR_syscalls
 	bgeu	r2, r1, ret_invsyscall
@@ -192,7 +193,6 @@ local_restart:
 	movhi	r11, %hiadj(sys_call_table)
 	add	r1, r1, r11
 	ldw	r1, %lo(sys_call_table)(r1)
-	beq	r1, r0, ret_invsyscall
 
 	/* Check if we are being traced */
 	GET_THREAD_INFO r11
@@ -213,6 +213,9 @@ local_restart:
 translate_rc_and_ret:
 	movi	r1, 0
 	bge	r2, zero, 3f
+	ldw	r1, PT_ORIG_R2(sp)
+	addi	r1, r1, 1
+	beq	r1, zero, 3f
 	sub	r2, zero, r2
 	movi	r1, 1
 3:
@@ -255,9 +258,9 @@ traced_system_call:
 	ldw	r6, PT_R6(sp)
 	ldw	r7, PT_R7(sp)
 
-	/* Fetch the syscall function, we don't need to check the boundaries
-	 * since this is already done.
-	 */
+	/* Fetch the syscall function. */
+	movui	r1, __NR_syscalls
+	bgeu	r2, r1, traced_invsyscall
 	slli	r1, r2, 2
 	movhi	r11,%hiadj(sys_call_table)
 	add	r1, r1, r11
@@ -276,6 +279,9 @@ traced_system_call:
 translate_rc_and_ret2:
 	movi	r1, 0
 	bge	r2, zero, 4f
+	ldw	r1, PT_ORIG_R2(sp)
+	addi	r1, r1, 1
+	beq	r1, zero, 4f
 	sub	r2, zero, r2
 	movi	r1, 1
 4:
@@ -287,6 +293,11 @@ end_translate_rc_and_ret2:
 	RESTORE_SWITCH_STACK
 	br	ret_from_exception
 
+	/* If the syscall number was invalid return ENOSYS */
+traced_invsyscall:
+	movi	r2, -ENOSYS
+	br	translate_rc_and_ret2
+
 Luser_return:
 	GET_THREAD_INFO	r11			/* get thread_info pointer */
 	ldw	r10, TI_FLAGS(r11)		/* get thread_info->flags */
@@ -336,9 +347,6 @@ external_interrupt:
 	/* skip if no interrupt is pending */
 	beq	r12, r0, ret_from_interrupt
 
-	movi	r24, -1
-	stw	r24, PT_ORIG_R2(sp)
-
 	/*
 	 * Process an external hardware interrupt.
 	 */
diff --git linux-libre-4.19.255-gnu1/arch/nios2/kernel/signal.c linux-libre-4.19.256-gnu1/arch/nios2/kernel/signal.c
index 20662b0f6c9e..c1be8e194138 100644
--- linux-libre-4.19.255-gnu1/arch/nios2/kernel/signal.c
+++ linux-libre-4.19.256-gnu1/arch/nios2/kernel/signal.c
@@ -240,7 +240,7 @@ static int do_signal(struct pt_regs *regs)
 	/*
 	 * If we were from a system call, check for system call restarting...
 	 */
-	if (regs->orig_r2 >= 0) {
+	if (regs->orig_r2 >= 0 && regs->r1) {
 		continue_addr = regs->ea;
 		restart_addr = continue_addr - 4;
 		retval = regs->r2;
@@ -261,6 +261,7 @@ static int do_signal(struct pt_regs *regs)
 			regs->ea = restart_addr;
 			break;
 		}
+		regs->orig_r2 = -1;
 	}
 
 	if (get_signal(&ksig)) {
diff --git linux-libre-4.19.255-gnu1/arch/nios2/kernel/syscall_table.c linux-libre-4.19.256-gnu1/arch/nios2/kernel/syscall_table.c
index 06e6ac1835b2..cd10b6eed128 100644
--- linux-libre-4.19.255-gnu1/arch/nios2/kernel/syscall_table.c
+++ linux-libre-4.19.256-gnu1/arch/nios2/kernel/syscall_table.c
@@ -25,5 +25,6 @@
 #define __SYSCALL(nr, call) [nr] = (call),
 
 void *sys_call_table[__NR_syscalls] = {
+	[0 ... __NR_syscalls-1] = sys_ni_syscall,
 #include <asm/unistd.h>
 };
diff --git linux-libre-4.19.255-gnu1/arch/parisc/kernel/drivers.c linux-libre-4.19.256-gnu1/arch/parisc/kernel/drivers.c
index 4d5ad9cb0f69..592e8cec16dd 100644
--- linux-libre-4.19.255-gnu1/arch/parisc/kernel/drivers.c
+++ linux-libre-4.19.256-gnu1/arch/parisc/kernel/drivers.c
@@ -499,7 +499,6 @@ alloc_pa_dev(unsigned long hpa, struct hardware_path *mod_path)
 	dev->id.hversion_rev = iodc_data[1] & 0x0f;
 	dev->id.sversion = ((iodc_data[4] & 0x0f) << 16) |
 			(iodc_data[5] << 8) | iodc_data[6];
-	dev->hpa.name = parisc_pathname(dev);
 	dev->hpa.start = hpa;
 	/* This is awkward.  The STI spec says that gfx devices may occupy
 	 * 32MB or 64MB.  Unfortunately, we don't know how to tell whether
@@ -513,10 +512,10 @@ alloc_pa_dev(unsigned long hpa, struct hardware_path *mod_path)
 		dev->hpa.end = hpa + 0xfff;
 	}
 	dev->hpa.flags = IORESOURCE_MEM;
-	name = parisc_hardware_description(&dev->id);
-	if (name) {
-		strlcpy(dev->name, name, sizeof(dev->name));
-	}
+	dev->hpa.name = dev->name;
+	name = parisc_hardware_description(&dev->id) ? : "unknown";
+	snprintf(dev->name, sizeof(dev->name), "%s [%s]",
+		name, parisc_pathname(dev));
 
 	/* Silently fail things like mouse ports which are subsumed within
 	 * the keyboard controller
diff --git linux-libre-4.19.255-gnu1/arch/powerpc/kernel/pci-common.c linux-libre-4.19.256-gnu1/arch/powerpc/kernel/pci-common.c
index 74628aca2bf1..b0f8c56ea282 100644
--- linux-libre-4.19.255-gnu1/arch/powerpc/kernel/pci-common.c
+++ linux-libre-4.19.256-gnu1/arch/powerpc/kernel/pci-common.c
@@ -75,23 +75,35 @@ const struct dma_map_ops *get_pci_dma_ops(void)
 }
 EXPORT_SYMBOL(get_pci_dma_ops);
 
-/*
- * This function should run under locking protection, specifically
- * hose_spinlock.
- */
 static int get_phb_number(struct device_node *dn)
 {
 	int ret, phb_id = -1;
-	u32 prop_32;
 	u64 prop;
 
 	/*
 	 * Try fixed PHB numbering first, by checking archs and reading
-	 * the respective device-tree properties. Firstly, try powernv by
-	 * reading "ibm,opal-phbid", only present in OPAL environment.
+	 * the respective device-tree properties. Firstly, try reading
+	 * standard "linux,pci-domain", then try reading "ibm,opal-phbid"
+	 * (only present in powernv OPAL environment), then try device-tree
+	 * alias and as the last try to use lower bits of "reg" property.
 	 */
-	ret = of_property_read_u64(dn, "ibm,opal-phbid", &prop);
+	ret = of_get_pci_domain_nr(dn);
+	if (ret >= 0) {
+		prop = ret;
+		ret = 0;
+	}
+	if (ret)
+		ret = of_property_read_u64(dn, "ibm,opal-phbid", &prop);
+
 	if (ret) {
+		ret = of_alias_get_id(dn, "pci");
+		if (ret >= 0) {
+			prop = ret;
+			ret = 0;
+		}
+	}
+	if (ret) {
+		u32 prop_32;
 		ret = of_property_read_u32_index(dn, "reg", 1, &prop_32);
 		prop = prop_32;
 	}
@@ -99,18 +111,20 @@ static int get_phb_number(struct device_node *dn)
 	if (!ret)
 		phb_id = (int)(prop & (MAX_PHBS - 1));
 
+	spin_lock(&hose_spinlock);
+
 	/* We need to be sure to not use the same PHB number twice. */
 	if ((phb_id >= 0) && !test_and_set_bit(phb_id, phb_bitmap))
-		return phb_id;
+		goto out_unlock;
 
-	/*
-	 * If not pseries nor powernv, or if fixed PHB numbering tried to add
-	 * the same PHB number twice, then fallback to dynamic PHB numbering.
-	 */
+	/* If everything fails then fallback to dynamic PHB numbering. */
 	phb_id = find_first_zero_bit(phb_bitmap, MAX_PHBS);
 	BUG_ON(phb_id >= MAX_PHBS);
 	set_bit(phb_id, phb_bitmap);
 
+out_unlock:
+	spin_unlock(&hose_spinlock);
+
 	return phb_id;
 }
 
@@ -121,10 +135,13 @@ struct pci_controller *pcibios_alloc_controller(struct device_node *dev)
 	phb = zalloc_maybe_bootmem(sizeof(struct pci_controller), GFP_KERNEL);
 	if (phb == NULL)
 		return NULL;
-	spin_lock(&hose_spinlock);
+
 	phb->global_number = get_phb_number(dev);
+
+	spin_lock(&hose_spinlock);
 	list_add_tail(&phb->list_node, &hose_list);
 	spin_unlock(&hose_spinlock);
+
 	phb->dn = dev;
 	phb->is_dynamic = slab_is_available();
 #ifdef CONFIG_PPC64
diff --git linux-libre-4.19.255-gnu1/arch/powerpc/kernel/prom.c linux-libre-4.19.256-gnu1/arch/powerpc/kernel/prom.c
index f8c49e5d4bd3..c57aeb9f031c 100644
--- linux-libre-4.19.255-gnu1/arch/powerpc/kernel/prom.c
+++ linux-libre-4.19.256-gnu1/arch/powerpc/kernel/prom.c
@@ -737,6 +737,13 @@ void __init early_init_devtree(void *params)
 	of_scan_flat_dt(early_init_dt_scan_root, NULL);
 	of_scan_flat_dt(early_init_dt_scan_memory_ppc, NULL);
 
+	/*
+	 * As generic code authors expect to be able to use static keys
+	 * in early_param() handlers, we initialize the static keys just
+	 * before parsing early params (it's fine to call jump_label_init()
+	 * more than once).
+	 */
+	jump_label_init();
 	parse_early_param();
 
 	/* make sure we've parsed cmdline for mem= before this */
diff --git linux-libre-4.19.255-gnu1/arch/powerpc/mm/Makefile linux-libre-4.19.256-gnu1/arch/powerpc/mm/Makefile
index cdf6a9960046..3c844bdd16c4 100644
--- linux-libre-4.19.255-gnu1/arch/powerpc/mm/Makefile
+++ linux-libre-4.19.256-gnu1/arch/powerpc/mm/Makefile
@@ -43,5 +43,12 @@ obj-$(CONFIG_HIGHMEM)		+= highmem.o
 obj-$(CONFIG_PPC_COPRO_BASE)	+= copro_fault.o
 obj-$(CONFIG_SPAPR_TCE_IOMMU)	+= mmu_context_iommu.o
 obj-$(CONFIG_PPC_PTDUMP)	+= dump_linuxpagetables.o
+ifdef CONFIG_PPC_PTDUMP
+obj-$(CONFIG_4xx)		+= dump_linuxpagetables-generic.o
+obj-$(CONFIG_PPC_8xx)		+= dump_linuxpagetables-8xx.o
+obj-$(CONFIG_PPC_BOOK3E_MMU)	+= dump_linuxpagetables-generic.o
+obj-$(CONFIG_PPC_BOOK3S_32)	+= dump_linuxpagetables-generic.o
+obj-$(CONFIG_PPC_BOOK3S_64)	+= dump_linuxpagetables-book3s64.o
+endif
 obj-$(CONFIG_PPC_HTDUMP)	+= dump_hashpagetable.o
 obj-$(CONFIG_PPC_MEM_KEYS)	+= pkeys.o
diff --git linux-libre-4.19.255-gnu1/arch/powerpc/mm/dump_linuxpagetables-8xx.c linux-libre-4.19.256-gnu1/arch/powerpc/mm/dump_linuxpagetables-8xx.c
new file mode 100644
index 000000000000..33f52a97975b
--- /dev/null
+++ linux-libre-4.19.256-gnu1/arch/powerpc/mm/dump_linuxpagetables-8xx.c
@@ -0,0 +1,82 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * From split of dump_linuxpagetables.c
+ * Copyright 2016, Rashmica Gupta, IBM Corp.
+ *
+ */
+#include <linux/kernel.h>
+#include <asm/pgtable.h>
+
+#include "dump_linuxpagetables.h"
+
+static const struct flag_info flag_array[] = {
+	{
+		.mask	= _PAGE_PRIVILEGED,
+		.val	= 0,
+		.set	= "user",
+		.clear	= "    ",
+	}, {
+		.mask	= _PAGE_RO | _PAGE_NA,
+		.val	= 0,
+		.set	= "rw",
+	}, {
+		.mask	= _PAGE_RO | _PAGE_NA,
+		.val	= _PAGE_RO,
+		.set	= "r ",
+	}, {
+		.mask	= _PAGE_RO | _PAGE_NA,
+		.val	= _PAGE_NA,
+		.set	= "  ",
+	}, {
+		.mask	= _PAGE_EXEC,
+		.val	= _PAGE_EXEC,
+		.set	= " X ",
+		.clear	= "   ",
+	}, {
+		.mask	= _PAGE_PRESENT,
+		.val	= _PAGE_PRESENT,
+		.set	= "present",
+		.clear	= "       ",
+	}, {
+		.mask	= _PAGE_GUARDED,
+		.val	= _PAGE_GUARDED,
+		.set	= "guarded",
+		.clear	= "       ",
+	}, {
+		.mask	= _PAGE_DIRTY,
+		.val	= _PAGE_DIRTY,
+		.set	= "dirty",
+		.clear	= "     ",
+	}, {
+		.mask	= _PAGE_ACCESSED,
+		.val	= _PAGE_ACCESSED,
+		.set	= "accessed",
+		.clear	= "        ",
+	}, {
+		.mask	= _PAGE_NO_CACHE,
+		.val	= _PAGE_NO_CACHE,
+		.set	= "no cache",
+		.clear	= "        ",
+	}, {
+		.mask	= _PAGE_SPECIAL,
+		.val	= _PAGE_SPECIAL,
+		.set	= "special",
+	}
+};
+
+struct pgtable_level pg_level[5] = {
+	{
+	}, { /* pgd */
+		.flag	= flag_array,
+		.num	= ARRAY_SIZE(flag_array),
+	}, { /* pud */
+		.flag	= flag_array,
+		.num	= ARRAY_SIZE(flag_array),
+	}, { /* pmd */
+		.flag	= flag_array,
+		.num	= ARRAY_SIZE(flag_array),
+	}, { /* pte */
+		.flag	= flag_array,
+		.num	= ARRAY_SIZE(flag_array),
+	},
+};
diff --git linux-libre-4.19.255-gnu1/arch/powerpc/mm/dump_linuxpagetables-book3s64.c linux-libre-4.19.256-gnu1/arch/powerpc/mm/dump_linuxpagetables-book3s64.c
new file mode 100644
index 000000000000..a637e612b205
--- /dev/null
+++ linux-libre-4.19.256-gnu1/arch/powerpc/mm/dump_linuxpagetables-book3s64.c
@@ -0,0 +1,115 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * From split of dump_linuxpagetables.c
+ * Copyright 2016, Rashmica Gupta, IBM Corp.
+ *
+ */
+#include <linux/kernel.h>
+#include <asm/pgtable.h>
+
+#include "dump_linuxpagetables.h"
+
+static const struct flag_info flag_array[] = {
+	{
+		.mask	= _PAGE_PRIVILEGED,
+		.val	= 0,
+		.set	= "user",
+		.clear	= "    ",
+	}, {
+		.mask	= _PAGE_READ,
+		.val	= _PAGE_READ,
+		.set	= "r",
+		.clear	= " ",
+	}, {
+		.mask	= _PAGE_WRITE,
+		.val	= _PAGE_WRITE,
+		.set	= "w",
+		.clear	= " ",
+	}, {
+		.mask	= _PAGE_EXEC,
+		.val	= _PAGE_EXEC,
+		.set	= " X ",
+		.clear	= "   ",
+	}, {
+		.mask	= _PAGE_PTE,
+		.val	= _PAGE_PTE,
+		.set	= "pte",
+		.clear	= "   ",
+	}, {
+		.mask	= _PAGE_PRESENT,
+		.val	= _PAGE_PRESENT,
+		.set	= "present",
+		.clear	= "       ",
+	}, {
+		.mask	= H_PAGE_HASHPTE,
+		.val	= H_PAGE_HASHPTE,
+		.set	= "hpte",
+		.clear	= "    ",
+	}, {
+		.mask	= _PAGE_DIRTY,
+		.val	= _PAGE_DIRTY,
+		.set	= "dirty",
+		.clear	= "     ",
+	}, {
+		.mask	= _PAGE_ACCESSED,
+		.val	= _PAGE_ACCESSED,
+		.set	= "accessed",
+		.clear	= "        ",
+	}, {
+		.mask	= _PAGE_NON_IDEMPOTENT,
+		.val	= _PAGE_NON_IDEMPOTENT,
+		.set	= "non-idempotent",
+		.clear	= "              ",
+	}, {
+		.mask	= _PAGE_TOLERANT,
+		.val	= _PAGE_TOLERANT,
+		.set	= "tolerant",
+		.clear	= "        ",
+	}, {
+		.mask	= H_PAGE_BUSY,
+		.val	= H_PAGE_BUSY,
+		.set	= "busy",
+	}, {
+#ifdef CONFIG_PPC_64K_PAGES
+		.mask	= H_PAGE_COMBO,
+		.val	= H_PAGE_COMBO,
+		.set	= "combo",
+	}, {
+		.mask	= H_PAGE_4K_PFN,
+		.val	= H_PAGE_4K_PFN,
+		.set	= "4K_pfn",
+	}, {
+#else /* CONFIG_PPC_64K_PAGES */
+		.mask	= H_PAGE_F_GIX,
+		.val	= H_PAGE_F_GIX,
+		.set	= "f_gix",
+		.is_val	= true,
+		.shift	= H_PAGE_F_GIX_SHIFT,
+	}, {
+		.mask	= H_PAGE_F_SECOND,
+		.val	= H_PAGE_F_SECOND,
+		.set	= "f_second",
+	}, {
+#endif /* CONFIG_PPC_64K_PAGES */
+		.mask	= _PAGE_SPECIAL,
+		.val	= _PAGE_SPECIAL,
+		.set	= "special",
+	}
+};
+
+struct pgtable_level pg_level[5] = {
+	{
+	}, { /* pgd */
+		.flag	= flag_array,
+		.num	= ARRAY_SIZE(flag_array),
+	}, { /* pud */
+		.flag	= flag_array,
+		.num	= ARRAY_SIZE(flag_array),
+	}, { /* pmd */
+		.flag	= flag_array,
+		.num	= ARRAY_SIZE(flag_array),
+	}, { /* pte */
+		.flag	= flag_array,
+		.num	= ARRAY_SIZE(flag_array),
+	},
+};
diff --git linux-libre-4.19.255-gnu1/arch/powerpc/mm/dump_linuxpagetables-generic.c linux-libre-4.19.256-gnu1/arch/powerpc/mm/dump_linuxpagetables-generic.c
new file mode 100644
index 000000000000..fed6923bcb46
--- /dev/null
+++ linux-libre-4.19.256-gnu1/arch/powerpc/mm/dump_linuxpagetables-generic.c
@@ -0,0 +1,82 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * From split of dump_linuxpagetables.c
+ * Copyright 2016, Rashmica Gupta, IBM Corp.
+ *
+ */
+#include <linux/kernel.h>
+#include <asm/pgtable.h>
+
+#include "dump_linuxpagetables.h"
+
+static const struct flag_info flag_array[] = {
+	{
+		.mask	= _PAGE_USER,
+		.val	= _PAGE_USER,
+		.set	= "user",
+		.clear	= "    ",
+	}, {
+		.mask	= _PAGE_RW,
+		.val	= 0,
+		.set	= "r ",
+		.clear	= "rw",
+	}, {
+#ifndef CONFIG_PPC_BOOK3S_32
+		.mask	= _PAGE_EXEC,
+		.val	= _PAGE_EXEC,
+		.set	= " X ",
+		.clear	= "   ",
+	}, {
+#endif
+		.mask	= _PAGE_PRESENT,
+		.val	= _PAGE_PRESENT,
+		.set	= "present",
+		.clear	= "       ",
+	}, {
+		.mask	= _PAGE_GUARDED,
+		.val	= _PAGE_GUARDED,
+		.set	= "guarded",
+		.clear	= "       ",
+	}, {
+		.mask	= _PAGE_DIRTY,
+		.val	= _PAGE_DIRTY,
+		.set	= "dirty",
+		.clear	= "     ",
+	}, {
+		.mask	= _PAGE_ACCESSED,
+		.val	= _PAGE_ACCESSED,
+		.set	= "accessed",
+		.clear	= "        ",
+	}, {
+		.mask	= _PAGE_WRITETHRU,
+		.val	= _PAGE_WRITETHRU,
+		.set	= "write through",
+		.clear	= "             ",
+	}, {
+		.mask	= _PAGE_NO_CACHE,
+		.val	= _PAGE_NO_CACHE,
+		.set	= "no cache",
+		.clear	= "        ",
+	}, {
+		.mask	= _PAGE_SPECIAL,
+		.val	= _PAGE_SPECIAL,
+		.set	= "special",
+	}
+};
+
+struct pgtable_level pg_level[5] = {
+	{
+	}, { /* pgd */
+		.flag	= flag_array,
+		.num	= ARRAY_SIZE(flag_array),
+	}, { /* pud */
+		.flag	= flag_array,
+		.num	= ARRAY_SIZE(flag_array),
+	}, { /* pmd */
+		.flag	= flag_array,
+		.num	= ARRAY_SIZE(flag_array),
+	}, { /* pte */
+		.flag	= flag_array,
+		.num	= ARRAY_SIZE(flag_array),
+	},
+};
diff --git linux-libre-4.19.255-gnu1/arch/powerpc/mm/dump_linuxpagetables.c linux-libre-4.19.256-gnu1/arch/powerpc/mm/dump_linuxpagetables.c
index 8464c2c01c0c..6aa41669ac1a 100644
--- linux-libre-4.19.255-gnu1/arch/powerpc/mm/dump_linuxpagetables.c
+++ linux-libre-4.19.256-gnu1/arch/powerpc/mm/dump_linuxpagetables.c
@@ -28,6 +28,8 @@
 #include <asm/page.h>
 #include <asm/pgalloc.h>
 
+#include "dump_linuxpagetables.h"
+
 #ifdef CONFIG_PPC32
 #define KERN_VIRT_START	0
 #endif
@@ -102,159 +104,6 @@ static struct addr_marker address_markers[] = {
 	{ -1,	NULL },
 };
 
-struct flag_info {
-	u64		mask;
-	u64		val;
-	const char	*set;
-	const char	*clear;
-	bool		is_val;
-	int		shift;
-};
-
-static const struct flag_info flag_array[] = {
-	{
-		.mask	= _PAGE_USER | _PAGE_PRIVILEGED,
-		.val	= _PAGE_USER,
-		.set	= "user",
-		.clear	= "    ",
-	}, {
-		.mask	= _PAGE_RW | _PAGE_RO | _PAGE_NA,
-		.val	= _PAGE_RW,
-		.set	= "rw",
-	}, {
-		.mask	= _PAGE_RW | _PAGE_RO | _PAGE_NA,
-		.val	= _PAGE_RO,
-		.set	= "ro",
-	}, {
-#if _PAGE_NA != 0
-		.mask	= _PAGE_RW | _PAGE_RO | _PAGE_NA,
-		.val	= _PAGE_RO,
-		.set	= "na",
-	}, {
-#endif
-		.mask	= _PAGE_EXEC,
-		.val	= _PAGE_EXEC,
-		.set	= " X ",
-		.clear	= "   ",
-	}, {
-		.mask	= _PAGE_PTE,
-		.val	= _PAGE_PTE,
-		.set	= "pte",
-		.clear	= "   ",
-	}, {
-		.mask	= _PAGE_PRESENT,
-		.val	= _PAGE_PRESENT,
-		.set	= "present",
-		.clear	= "       ",
-	}, {
-#ifdef CONFIG_PPC_BOOK3S_64
-		.mask	= H_PAGE_HASHPTE,
-		.val	= H_PAGE_HASHPTE,
-#else
-		.mask	= _PAGE_HASHPTE,
-		.val	= _PAGE_HASHPTE,
-#endif
-		.set	= "hpte",
-		.clear	= "    ",
-	}, {
-#ifndef CONFIG_PPC_BOOK3S_64
-		.mask	= _PAGE_GUARDED,
-		.val	= _PAGE_GUARDED,
-		.set	= "guarded",
-		.clear	= "       ",
-	}, {
-#endif
-		.mask	= _PAGE_DIRTY,
-		.val	= _PAGE_DIRTY,
-		.set	= "dirty",
-		.clear	= "     ",
-	}, {
-		.mask	= _PAGE_ACCESSED,
-		.val	= _PAGE_ACCESSED,
-		.set	= "accessed",
-		.clear	= "        ",
-	}, {
-#ifndef CONFIG_PPC_BOOK3S_64
-		.mask	= _PAGE_WRITETHRU,
-		.val	= _PAGE_WRITETHRU,
-		.set	= "write through",
-		.clear	= "             ",
-	}, {
-#endif
-#ifndef CONFIG_PPC_BOOK3S_64
-		.mask	= _PAGE_NO_CACHE,
-		.val	= _PAGE_NO_CACHE,
-		.set	= "no cache",
-		.clear	= "        ",
-	}, {
-#else
-		.mask	= _PAGE_NON_IDEMPOTENT,
-		.val	= _PAGE_NON_IDEMPOTENT,
-		.set	= "non-idempotent",
-		.clear	= "              ",
-	}, {
-		.mask	= _PAGE_TOLERANT,
-		.val	= _PAGE_TOLERANT,
-		.set	= "tolerant",
-		.clear	= "        ",
-	}, {
-#endif
-#ifdef CONFIG_PPC_BOOK3S_64
-		.mask	= H_PAGE_BUSY,
-		.val	= H_PAGE_BUSY,
-		.set	= "busy",
-	}, {
-#ifdef CONFIG_PPC_64K_PAGES
-		.mask	= H_PAGE_COMBO,
-		.val	= H_PAGE_COMBO,
-		.set	= "combo",
-	}, {
-		.mask	= H_PAGE_4K_PFN,
-		.val	= H_PAGE_4K_PFN,
-		.set	= "4K_pfn",
-	}, {
-#else /* CONFIG_PPC_64K_PAGES */
-		.mask	= H_PAGE_F_GIX,
-		.val	= H_PAGE_F_GIX,
-		.set	= "f_gix",
-		.is_val	= true,
-		.shift	= H_PAGE_F_GIX_SHIFT,
-	}, {
-		.mask	= H_PAGE_F_SECOND,
-		.val	= H_PAGE_F_SECOND,
-		.set	= "f_second",
-	}, {
-#endif /* CONFIG_PPC_64K_PAGES */
-#endif
-		.mask	= _PAGE_SPECIAL,
-		.val	= _PAGE_SPECIAL,
-		.set	= "special",
-	}
-};
-
-struct pgtable_level {
-	const struct flag_info *flag;
-	size_t num;
-	u64 mask;
-};
-
-static struct pgtable_level pg_level[] = {
-	{
-	}, { /* pgd */
-		.flag	= flag_array,
-		.num	= ARRAY_SIZE(flag_array),
-	}, { /* pud */
-		.flag	= flag_array,
-		.num	= ARRAY_SIZE(flag_array),
-	}, { /* pmd */
-		.flag	= flag_array,
-		.num	= ARRAY_SIZE(flag_array),
-	}, { /* pte */
-		.flag	= flag_array,
-		.num	= ARRAY_SIZE(flag_array),
-	},
-};
-
 static void dump_flag_info(struct pg_state *st, const struct flag_info
 		*flag, u64 pte, int num)
 {
diff --git linux-libre-4.19.255-gnu1/arch/powerpc/mm/dump_linuxpagetables.h linux-libre-4.19.256-gnu1/arch/powerpc/mm/dump_linuxpagetables.h
new file mode 100644
index 000000000000..5d513636de73
--- /dev/null
+++ linux-libre-4.19.256-gnu1/arch/powerpc/mm/dump_linuxpagetables.h
@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#include <linux/types.h>
+
+struct flag_info {
+	u64		mask;
+	u64		val;
+	const char	*set;
+	const char	*clear;
+	bool		is_val;
+	int		shift;
+};
+
+struct pgtable_level {
+	const struct flag_info *flag;
+	size_t num;
+	u64 mask;
+};
+
+extern struct pgtable_level pg_level[5];
diff --git linux-libre-4.19.255-gnu1/arch/powerpc/platforms/Kconfig.cputype linux-libre-4.19.256-gnu1/arch/powerpc/platforms/Kconfig.cputype
index ad0216c41d2c..67ad128a9a3d 100644
--- linux-libre-4.19.255-gnu1/arch/powerpc/platforms/Kconfig.cputype
+++ linux-libre-4.19.256-gnu1/arch/powerpc/platforms/Kconfig.cputype
@@ -134,11 +134,11 @@ config POWER9_CPU
 
 config E5500_CPU
 	bool "Freescale e5500"
-	depends on E500
+	depends on PPC64 && E500
 
 config E6500_CPU
 	bool "Freescale e6500"
-	depends on E500
+	depends on PPC64 && E500
 
 config 860_CPU
 	bool "8xx family"
diff --git linux-libre-4.19.255-gnu1/arch/powerpc/platforms/cell/axon_msi.c linux-libre-4.19.256-gnu1/arch/powerpc/platforms/cell/axon_msi.c
index 326d34e2aa02..946a09ae9fb2 100644
--- linux-libre-4.19.255-gnu1/arch/powerpc/platforms/cell/axon_msi.c
+++ linux-libre-4.19.256-gnu1/arch/powerpc/platforms/cell/axon_msi.c
@@ -230,6 +230,7 @@ static int setup_msi_msg_address(struct pci_dev *dev, struct msi_msg *msg)
 	if (!prop) {
 		dev_dbg(&dev->dev,
 			"axon_msi: no msi-address-(32|64) properties found\n");
+		of_node_put(dn);
 		return -ENOENT;
 	}
 
diff --git linux-libre-4.19.255-gnu1/arch/powerpc/platforms/cell/spufs/inode.c linux-libre-4.19.256-gnu1/arch/powerpc/platforms/cell/spufs/inode.c
index db329d4bf1c3..8b664d9cfcd4 100644
--- linux-libre-4.19.255-gnu1/arch/powerpc/platforms/cell/spufs/inode.c
+++ linux-libre-4.19.256-gnu1/arch/powerpc/platforms/cell/spufs/inode.c
@@ -684,6 +684,7 @@ spufs_init_isolated_loader(void)
 		return;
 
 	loader = of_get_property(dn, "loader", &size);
+	of_node_put(dn);
 	if (!loader)
 		return;
 
diff --git linux-libre-4.19.255-gnu1/arch/powerpc/platforms/powernv/rng.c linux-libre-4.19.256-gnu1/arch/powerpc/platforms/powernv/rng.c
index 6fb1ceb5756d..0f66bdf867ee 100644
--- linux-libre-4.19.255-gnu1/arch/powerpc/platforms/powernv/rng.c
+++ linux-libre-4.19.256-gnu1/arch/powerpc/platforms/powernv/rng.c
@@ -67,6 +67,8 @@ int powernv_get_random_real_mode(unsigned long *v)
 	struct powernv_rng *rng;
 
 	rng = raw_cpu_read(powernv_rng);
+	if (!rng)
+		return 0;
 
 	*v = rng_whiten(rng, __raw_rm_readq(rng->regs_real));
 
diff --git linux-libre-4.19.255-gnu1/arch/powerpc/sysdev/fsl_pci.c linux-libre-4.19.256-gnu1/arch/powerpc/sysdev/fsl_pci.c
index 918be816b097..6d41aa4db05d 100644
--- linux-libre-4.19.255-gnu1/arch/powerpc/sysdev/fsl_pci.c
+++ linux-libre-4.19.256-gnu1/arch/powerpc/sysdev/fsl_pci.c
@@ -523,6 +523,7 @@ int fsl_add_bridge(struct platform_device *pdev, int is_primary)
 	struct resource rsrc;
 	const int *bus_range;
 	u8 hdr_type, progif;
+	u32 class_code;
 	struct device_node *dev;
 	struct ccsr_pci __iomem *pci;
 	u16 temp;
@@ -596,6 +597,13 @@ int fsl_add_bridge(struct platform_device *pdev, int is_primary)
 			PPC_INDIRECT_TYPE_SURPRESS_PRIMARY_BUS;
 		if (fsl_pcie_check_link(hose))
 			hose->indirect_type |= PPC_INDIRECT_TYPE_NO_PCIE_LINK;
+		/* Fix Class Code to PCI_CLASS_BRIDGE_PCI_NORMAL for pre-3.0 controller */
+		if (in_be32(&pci->block_rev1) < PCIE_IP_REV_3_0) {
+			early_read_config_dword(hose, 0, 0, PCIE_FSL_CSR_CLASSCODE, &class_code);
+			class_code &= 0xff;
+			class_code |= PCI_CLASS_BRIDGE_PCI_NORMAL << 8;
+			early_write_config_dword(hose, 0, 0, PCIE_FSL_CSR_CLASSCODE, class_code);
+		}
 	} else {
 		/*
 		 * Set PBFR(PCI Bus Function Register)[10] = 1 to
diff --git linux-libre-4.19.255-gnu1/arch/powerpc/sysdev/fsl_pci.h linux-libre-4.19.256-gnu1/arch/powerpc/sysdev/fsl_pci.h
index 151588530b06..caa05c4aa427 100644
--- linux-libre-4.19.255-gnu1/arch/powerpc/sysdev/fsl_pci.h
+++ linux-libre-4.19.256-gnu1/arch/powerpc/sysdev/fsl_pci.h
@@ -23,6 +23,7 @@ struct platform_device;
 
 #define PCIE_LTSSM	0x0404		/* PCIE Link Training and Status */
 #define PCIE_LTSSM_L0	0x16		/* L0 state */
+#define PCIE_FSL_CSR_CLASSCODE	0x474	/* FSL GPEX CSR */
 #define PCIE_IP_REV_2_2		0x02080202 /* PCIE IP block version Rev2.2 */
 #define PCIE_IP_REV_3_0		0x02080300 /* PCIE IP block version Rev3.0 */
 #define PIWAR_EN		0x80000000	/* Enable */
diff --git linux-libre-4.19.255-gnu1/arch/powerpc/sysdev/xive/spapr.c linux-libre-4.19.256-gnu1/arch/powerpc/sysdev/xive/spapr.c
index 5566bbc86f4a..aa705732150c 100644
--- linux-libre-4.19.255-gnu1/arch/powerpc/sysdev/xive/spapr.c
+++ linux-libre-4.19.256-gnu1/arch/powerpc/sysdev/xive/spapr.c
@@ -631,6 +631,7 @@ static bool xive_get_max_prio(u8 *max_prio)
 	}
 
 	reg = of_get_property(rootdn, "ibm,plat-res-int-priorities", &len);
+	of_node_put(rootdn);
 	if (!reg) {
 		pr_err("Failed to read 'ibm,plat-res-int-priorities' property\n");
 		return false;
diff --git linux-libre-4.19.255-gnu1/arch/riscv/kernel/sys_riscv.c linux-libre-4.19.256-gnu1/arch/riscv/kernel/sys_riscv.c
index db44da32701f..516aaa19daf2 100644
--- linux-libre-4.19.255-gnu1/arch/riscv/kernel/sys_riscv.c
+++ linux-libre-4.19.256-gnu1/arch/riscv/kernel/sys_riscv.c
@@ -26,9 +26,8 @@ static long riscv_sys_mmap(unsigned long addr, unsigned long len,
 	if (unlikely(offset & (~PAGE_MASK >> page_shift_offset)))
 		return -EINVAL;
 
-	if ((prot & PROT_WRITE) && (prot & PROT_EXEC))
-		if (unlikely(!(prot & PROT_READ)))
-			return -EINVAL;
+	if (unlikely((prot & PROT_WRITE) && !(prot & PROT_READ)))
+		return -EINVAL;
 
 	return ksys_mmap_pgoff(addr, len, prot, flags, fd,
 			       offset >> (PAGE_SHIFT - page_shift_offset));
diff --git linux-libre-4.19.255-gnu1/arch/riscv/kernel/traps.c linux-libre-4.19.256-gnu1/arch/riscv/kernel/traps.c
index 24a9333dda2c..7c65750508f2 100644
--- linux-libre-4.19.255-gnu1/arch/riscv/kernel/traps.c
+++ linux-libre-4.19.256-gnu1/arch/riscv/kernel/traps.c
@@ -22,6 +22,7 @@
 #include <linux/mm.h>
 #include <linux/module.h>
 #include <linux/irq.h>
+#include <linux/kexec.h>
 
 #include <asm/processor.h>
 #include <asm/ptrace.h>
@@ -50,6 +51,9 @@ void die(struct pt_regs *regs, const char *str)
 
 	ret = notify_die(DIE_OOPS, str, regs, 0, regs->scause, SIGSEGV);
 
+	if (regs && kexec_should_crash(current))
+		crash_kexec(regs);
+
 	bust_spinlocks(0);
 	add_taint(TAINT_DIE, LOCKDEP_NOW_UNRELIABLE);
 	spin_unlock_irq(&die_lock);
diff --git linux-libre-4.19.255-gnu1/arch/x86/boot/Makefile linux-libre-4.19.256-gnu1/arch/x86/boot/Makefile
index 6539c50fb9aa..82500962f1b3 100644
--- linux-libre-4.19.255-gnu1/arch/x86/boot/Makefile
+++ linux-libre-4.19.256-gnu1/arch/x86/boot/Makefile
@@ -100,7 +100,7 @@ $(obj)/zoffset.h: $(obj)/compressed/vmlinux FORCE
 AFLAGS_header.o += -I$(objtree)/$(obj)
 $(obj)/header.o: $(obj)/zoffset.h
 
-LDFLAGS_setup.elf	:= -m elf_i386 -T
+LDFLAGS_setup.elf	:= -m elf_i386 -z noexecstack -T
 $(obj)/setup.elf: $(src)/setup.ld $(SETUP_OBJS) FORCE
 	$(call if_changed,ld)
 
diff --git linux-libre-4.19.255-gnu1/arch/x86/boot/compressed/Makefile linux-libre-4.19.256-gnu1/arch/x86/boot/compressed/Makefile
index 5642f025b397..23b6e2da72bf 100644
--- linux-libre-4.19.255-gnu1/arch/x86/boot/compressed/Makefile
+++ linux-libre-4.19.256-gnu1/arch/x86/boot/compressed/Makefile
@@ -57,6 +57,10 @@ else
 KBUILD_LDFLAGS += $(shell $(LD) --help 2>&1 | grep -q "\-z noreloc-overflow" \
 	&& echo "-z noreloc-overflow -pie --no-dynamic-linker")
 endif
+
+KBUILD_LDFLAGS += -z noexecstack
+KBUILD_LDFLAGS += $(call ld-option,--no-warn-rwx-segments)
+
 LDFLAGS_vmlinux := -T
 
 hostprogs-y	:= mkpiggy
diff --git linux-libre-4.19.255-gnu1/arch/x86/entry/vdso/Makefile linux-libre-4.19.256-gnu1/arch/x86/entry/vdso/Makefile
index 5bfe2243a08f..ec5d8d0bd222 100644
--- linux-libre-4.19.255-gnu1/arch/x86/entry/vdso/Makefile
+++ linux-libre-4.19.256-gnu1/arch/x86/entry/vdso/Makefile
@@ -172,7 +172,7 @@ quiet_cmd_vdso = VDSO    $@
 
 VDSO_LDFLAGS = -shared $(call ld-option, --hash-style=both) \
 	$(call ld-option, --build-id) $(call ld-option, --eh-frame-hdr) \
-	-Bsymbolic
+	-Bsymbolic -z noexecstack
 GCOV_PROFILE := n
 
 #
diff --git linux-libre-4.19.255-gnu1/arch/x86/kernel/pmem.c linux-libre-4.19.256-gnu1/arch/x86/kernel/pmem.c
index 6b07faaa1579..23154d24b117 100644
--- linux-libre-4.19.255-gnu1/arch/x86/kernel/pmem.c
+++ linux-libre-4.19.256-gnu1/arch/x86/kernel/pmem.c
@@ -27,6 +27,11 @@ static __init int register_e820_pmem(void)
 	 * simply here to trigger the module to load on demand.
 	 */
 	pdev = platform_device_alloc("e820_pmem", -1);
-	return platform_device_add(pdev);
+
+	rc = platform_device_add(pdev);
+	if (rc)
+		platform_device_put(pdev);
+
+	return rc;
 }
 device_initcall(register_e820_pmem);
diff --git linux-libre-4.19.255-gnu1/arch/x86/kvm/emulate.c linux-libre-4.19.256-gnu1/arch/x86/kvm/emulate.c
index 63754d248dfb..25bdd06969b3 100644
--- linux-libre-4.19.255-gnu1/arch/x86/kvm/emulate.c
+++ linux-libre-4.19.256-gnu1/arch/x86/kvm/emulate.c
@@ -1708,16 +1708,6 @@ static int __load_segment_descriptor(struct x86_emulate_ctxt *ctxt,
 	case VCPU_SREG_TR:
 		if (seg_desc.s || (seg_desc.type != 1 && seg_desc.type != 9))
 			goto exception;
-		if (!seg_desc.p) {
-			err_vec = NP_VECTOR;
-			goto exception;
-		}
-		old_desc = seg_desc;
-		seg_desc.type |= 2; /* busy */
-		ret = ctxt->ops->cmpxchg_emulated(ctxt, desc_addr, &old_desc, &seg_desc,
-						  sizeof(seg_desc), &ctxt->exception);
-		if (ret != X86EMUL_CONTINUE)
-			return ret;
 		break;
 	case VCPU_SREG_LDTR:
 		if (seg_desc.s || seg_desc.type != 2)
@@ -1755,8 +1745,17 @@ static int __load_segment_descriptor(struct x86_emulate_ctxt *ctxt,
 		if (ret != X86EMUL_CONTINUE)
 			return ret;
 		if (emul_is_noncanonical_address(get_desc_base(&seg_desc) |
-				((u64)base3 << 32), ctxt))
-			return emulate_gp(ctxt, 0);
+						 ((u64)base3 << 32), ctxt))
+			return emulate_gp(ctxt, err_code);
+	}
+
+	if (seg == VCPU_SREG_TR) {
+		old_desc = seg_desc;
+		seg_desc.type |= 2; /* busy */
+		ret = ctxt->ops->cmpxchg_emulated(ctxt, desc_addr, &old_desc, &seg_desc,
+						  sizeof(seg_desc), &ctxt->exception);
+		if (ret != X86EMUL_CONTINUE)
+			return ret;
 	}
 load:
 	ctxt->ops->set_segment(ctxt, selector, &seg_desc, base3, seg);
diff --git linux-libre-4.19.255-gnu1/arch/x86/kvm/hyperv.c linux-libre-4.19.256-gnu1/arch/x86/kvm/hyperv.c
index ca5a6c3f8c91..2047edb5ff74 100644
--- linux-libre-4.19.255-gnu1/arch/x86/kvm/hyperv.c
+++ linux-libre-4.19.256-gnu1/arch/x86/kvm/hyperv.c
@@ -341,6 +341,9 @@ static int synic_set_irq(struct kvm_vcpu_hv_synic *synic, u32 sint)
 	struct kvm_lapic_irq irq;
 	int ret, vector;
 
+	if (KVM_BUG_ON(!lapic_in_kernel(vcpu), vcpu->kvm))
+		return -EINVAL;
+
 	if (sint >= ARRAY_SIZE(synic->sint))
 		return -EINVAL;
 
diff --git linux-libre-4.19.255-gnu1/arch/x86/kvm/lapic.c linux-libre-4.19.256-gnu1/arch/x86/kvm/lapic.c
index 89d07312e58c..027941e3df68 100644
--- linux-libre-4.19.255-gnu1/arch/x86/kvm/lapic.c
+++ linux-libre-4.19.256-gnu1/arch/x86/kvm/lapic.c
@@ -961,6 +961,10 @@ bool kvm_irq_delivery_to_apic_fast(struct kvm *kvm, struct kvm_lapic *src,
 	*r = -1;
 
 	if (irq->shorthand == APIC_DEST_SELF) {
+		if (KVM_BUG_ON(!src, kvm)) {
+			*r = 0;
+			return true;
+		}
 		*r = kvm_apic_set_irq(src->vcpu, irq, dest_map);
 		return true;
 	}
diff --git linux-libre-4.19.255-gnu1/arch/x86/kvm/svm.c linux-libre-4.19.256-gnu1/arch/x86/kvm/svm.c
index 85181457413e..e1492a67e988 100644
--- linux-libre-4.19.255-gnu1/arch/x86/kvm/svm.c
+++ linux-libre-4.19.256-gnu1/arch/x86/kvm/svm.c
@@ -5142,8 +5142,6 @@ static void svm_set_irq(struct kvm_vcpu *vcpu)
 {
 	struct vcpu_svm *svm = to_svm(vcpu);
 
-	BUG_ON(!(gif_set(svm)));
-
 	trace_kvm_inj_virq(vcpu->arch.interrupt.nr);
 	++vcpu->stat.irq_injections;
 
diff --git linux-libre-4.19.255-gnu1/arch/x86/mm/numa.c linux-libre-4.19.256-gnu1/arch/x86/mm/numa.c
index fa150855647c..b4ff063a4371 100644
--- linux-libre-4.19.255-gnu1/arch/x86/mm/numa.c
+++ linux-libre-4.19.256-gnu1/arch/x86/mm/numa.c
@@ -826,7 +826,7 @@ void debug_cpumask_set_cpu(int cpu, int node, bool enable)
 		return;
 	}
 	mask = node_to_cpumask_map[node];
-	if (!mask) {
+	if (!cpumask_available(mask)) {
 		pr_err("node_to_cpumask_map[%i] NULL\n", node);
 		dump_stack();
 		return;
@@ -872,7 +872,7 @@ const struct cpumask *cpumask_of_node(int node)
 		dump_stack();
 		return cpu_none_mask;
 	}
-	if (node_to_cpumask_map[node] == NULL) {
+	if (!cpumask_available(node_to_cpumask_map[node])) {
 		printk(KERN_WARNING
 			"cpumask_of_node(%d): no node_to_cpumask_map!\n",
 			node);
diff --git linux-libre-4.19.255-gnu1/arch/x86/platform/olpc/olpc-xo1-sci.c linux-libre-4.19.256-gnu1/arch/x86/platform/olpc/olpc-xo1-sci.c
index 7fa8b3b53bc0..193860d7f2c4 100644
--- linux-libre-4.19.255-gnu1/arch/x86/platform/olpc/olpc-xo1-sci.c
+++ linux-libre-4.19.256-gnu1/arch/x86/platform/olpc/olpc-xo1-sci.c
@@ -85,7 +85,7 @@ static void send_ebook_state(void)
 		return;
 	}
 
-	if (!!test_bit(SW_TABLET_MODE, ebook_switch_idev->sw) == state)
+	if (test_bit(SW_TABLET_MODE, ebook_switch_idev->sw) == !!state)
 		return; /* Nothing new to report. */
 
 	input_report_switch(ebook_switch_idev, SW_TABLET_MODE, state);
diff --git linux-libre-4.19.255-gnu1/drivers/acpi/acpi_lpss.c linux-libre-4.19.256-gnu1/drivers/acpi/acpi_lpss.c
index ded6c5c17fd7..144cda7da7ee 100644
--- linux-libre-4.19.255-gnu1/drivers/acpi/acpi_lpss.c
+++ linux-libre-4.19.256-gnu1/drivers/acpi/acpi_lpss.c
@@ -401,6 +401,9 @@ static int register_device_clock(struct acpi_device *adev,
 	if (!lpss_clk_dev)
 		lpt_register_clock_device();
 
+	if (IS_ERR(lpss_clk_dev))
+		return PTR_ERR(lpss_clk_dev);
+
 	clk_data = platform_get_drvdata(lpss_clk_dev);
 	if (!clk_data)
 		return -ENODEV;
diff --git linux-libre-4.19.255-gnu1/drivers/acpi/cppc_acpi.c linux-libre-4.19.256-gnu1/drivers/acpi/cppc_acpi.c
index f68a4ffd3352..c0cfd3a3ed5e 100644
--- linux-libre-4.19.255-gnu1/drivers/acpi/cppc_acpi.c
+++ linux-libre-4.19.256-gnu1/drivers/acpi/cppc_acpi.c
@@ -630,33 +630,6 @@ int pcc_data_alloc(int pcc_ss_id)
 	return 0;
 }
 
-/* Check if CPPC revision + num_ent combination is supported */
-static bool is_cppc_supported(int revision, int num_ent)
-{
-	int expected_num_ent;
-
-	switch (revision) {
-	case CPPC_V2_REV:
-		expected_num_ent = CPPC_V2_NUM_ENT;
-		break;
-	case CPPC_V3_REV:
-		expected_num_ent = CPPC_V3_NUM_ENT;
-		break;
-	default:
-		pr_debug("Firmware exports unsupported CPPC revision: %d\n",
-			revision);
-		return false;
-	}
-
-	if (expected_num_ent != num_ent) {
-		pr_debug("Firmware exports %d entries. Expected: %d for CPPC rev:%d\n",
-			num_ent, expected_num_ent, revision);
-		return false;
-	}
-
-	return true;
-}
-
 /*
  * An example CPC table looks like the following.
  *
@@ -752,7 +725,6 @@ int acpi_cppc_processor_probe(struct acpi_processor *pr)
 				cpc_obj->type);
 		goto out_free;
 	}
-	cpc_ptr->num_entries = num_ent;
 
 	/* Second entry should be revision. */
 	cpc_obj = &out_obj->package.elements[1];
@@ -763,10 +735,32 @@ int acpi_cppc_processor_probe(struct acpi_processor *pr)
 				cpc_obj->type);
 		goto out_free;
 	}
-	cpc_ptr->version = cpc_rev;
 
-	if (!is_cppc_supported(cpc_rev, num_ent))
+	if (cpc_rev < CPPC_V2_REV) {
+		pr_debug("Unsupported _CPC Revision (%d) for CPU:%d\n", cpc_rev,
+			 pr->id);
 		goto out_free;
+	}
+
+	/*
+	 * Disregard _CPC if the number of entries in the return pachage is not
+	 * as expected, but support future revisions being proper supersets of
+	 * the v3 and only causing more entries to be returned by _CPC.
+	 */
+	if ((cpc_rev == CPPC_V2_REV && num_ent != CPPC_V2_NUM_ENT) ||
+	    (cpc_rev == CPPC_V3_REV && num_ent != CPPC_V3_NUM_ENT) ||
+	    (cpc_rev > CPPC_V3_REV && num_ent <= CPPC_V3_NUM_ENT)) {
+		pr_debug("Unexpected number of _CPC return package entries (%d) for CPU:%d\n",
+			 num_ent, pr->id);
+		goto out_free;
+	}
+	if (cpc_rev > CPPC_V3_REV) {
+		num_ent = CPPC_V3_NUM_ENT;
+		cpc_rev = CPPC_V3_REV;
+	}
+
+	cpc_ptr->num_entries = num_ent;
+	cpc_ptr->version = cpc_rev;
 
 	/* Iterate through remaining entries in _CPC */
 	for (i = 2; i < num_ent; i++) {
diff --git linux-libre-4.19.255-gnu1/drivers/acpi/ec.c linux-libre-4.19.256-gnu1/drivers/acpi/ec.c
index e3df3dda0332..3394ec64fe95 100644
--- linux-libre-4.19.255-gnu1/drivers/acpi/ec.c
+++ linux-libre-4.19.256-gnu1/drivers/acpi/ec.c
@@ -2118,13 +2118,6 @@ static const struct dmi_system_id acpi_ec_no_wakeup[] = {
 			DMI_MATCH(DMI_PRODUCT_FAMILY, "Thinkpad X1 Carbon 6th"),
 		},
 	},
-	{
-		.ident = "ThinkPad X1 Carbon 6th",
-		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
-			DMI_MATCH(DMI_PRODUCT_FAMILY, "ThinkPad X1 Carbon 6th"),
-		},
-	},
 	{
 		.ident = "ThinkPad X1 Yoga 3rd",
 		.matches = {
diff --git linux-libre-4.19.255-gnu1/drivers/acpi/property.c linux-libre-4.19.256-gnu1/drivers/acpi/property.c
index c8018d73d5a7..c59235038bf2 100644
--- linux-libre-4.19.255-gnu1/drivers/acpi/property.c
+++ linux-libre-4.19.256-gnu1/drivers/acpi/property.c
@@ -132,10 +132,10 @@ static bool acpi_nondev_subnode_ok(acpi_handle scope,
 	return acpi_nondev_subnode_data_ok(handle, link, list, parent);
 }
 
-static int acpi_add_nondev_subnodes(acpi_handle scope,
-				    const union acpi_object *links,
-				    struct list_head *list,
-				    struct fwnode_handle *parent)
+static bool acpi_add_nondev_subnodes(acpi_handle scope,
+				     const union acpi_object *links,
+				     struct list_head *list,
+				     struct fwnode_handle *parent)
 {
 	bool ret = false;
 	int i;
diff --git linux-libre-4.19.255-gnu1/drivers/acpi/sleep.c linux-libre-4.19.256-gnu1/drivers/acpi/sleep.c
index 847db3edcb5b..a3b4ac97793f 100644
--- linux-libre-4.19.255-gnu1/drivers/acpi/sleep.c
+++ linux-libre-4.19.256-gnu1/drivers/acpi/sleep.c
@@ -359,6 +359,14 @@ static const struct dmi_system_id acpisleep_dmi_table[] __initconst = {
 		DMI_MATCH(DMI_PRODUCT_NAME, "80E3"),
 		},
 	},
+	{
+	.callback = init_nvs_save_s3,
+	.ident = "Lenovo G40-45",
+	.matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+		DMI_MATCH(DMI_PRODUCT_NAME, "80E1"),
+		},
+	},
 	/*
 	 * https://bugzilla.kernel.org/show_bug.cgi?id=196907
 	 * Some Dell XPS13 9360 cannot do suspend-to-idle using the Low Power
diff --git linux-libre-4.19.255-gnu1/drivers/ata/libata-eh.c linux-libre-4.19.256-gnu1/drivers/ata/libata-eh.c
index 096f29a2f710..fcc3d7985762 100644
--- linux-libre-4.19.255-gnu1/drivers/ata/libata-eh.c
+++ linux-libre-4.19.256-gnu1/drivers/ata/libata-eh.c
@@ -2350,6 +2350,7 @@ const char *ata_get_cmd_descript(u8 command)
 		{ ATA_CMD_WRITE_QUEUED_FUA_EXT, "WRITE DMA QUEUED FUA EXT" },
 		{ ATA_CMD_FPDMA_READ,		"READ FPDMA QUEUED" },
 		{ ATA_CMD_FPDMA_WRITE,		"WRITE FPDMA QUEUED" },
+		{ ATA_CMD_NCQ_NON_DATA,		"NCQ NON-DATA" },
 		{ ATA_CMD_FPDMA_SEND,		"SEND FPDMA QUEUED" },
 		{ ATA_CMD_FPDMA_RECV,		"RECEIVE FPDMA QUEUED" },
 		{ ATA_CMD_PIO_READ,		"READ SECTOR(S)" },
diff --git linux-libre-4.19.255-gnu1/drivers/atm/idt77252.c linux-libre-4.19.256-gnu1/drivers/atm/idt77252.c
index 3e00ab8a8890..bc06f5919839 100644
--- linux-libre-4.19.255-gnu1/drivers/atm/idt77252.c
+++ linux-libre-4.19.256-gnu1/drivers/atm/idt77252.c
@@ -3767,6 +3767,7 @@ static void __exit idt77252_exit(void)
 		card = idt77252_chain;
 		dev = card->atmdev;
 		idt77252_chain = card->next;
+		del_timer_sync(&card->tst_timer);
 
 		if (dev->phy->stop)
 			dev->phy->stop(dev);
diff --git linux-libre-4.19.255-gnu1/drivers/block/null_blk_main.c linux-libre-4.19.256-gnu1/drivers/block/null_blk_main.c
index 4fef1fb918ec..5553df736c72 100644
--- linux-libre-4.19.255-gnu1/drivers/block/null_blk_main.c
+++ linux-libre-4.19.256-gnu1/drivers/block/null_blk_main.c
@@ -1819,8 +1819,13 @@ static int null_add_dev(struct nullb_device *dev)
 	blk_queue_flag_clear(QUEUE_FLAG_ADD_RANDOM, nullb->q);
 
 	mutex_lock(&lock);
-	nullb->index = ida_simple_get(&nullb_indexes, 0, 0, GFP_KERNEL);
-	dev->index = nullb->index;
+	rv = ida_simple_get(&nullb_indexes, 0, 0, GFP_KERNEL);
+	if (rv < 0) {
+		mutex_unlock(&lock);
+		goto out_cleanup_zone;
+	}
+	nullb->index = rv;
+	dev->index = rv;
 	mutex_unlock(&lock);
 
 	blk_queue_logical_block_size(nullb->q, dev->blocksize);
@@ -1832,13 +1837,16 @@ static int null_add_dev(struct nullb_device *dev)
 
 	rv = null_gendisk_register(nullb);
 	if (rv)
-		goto out_cleanup_zone;
+		goto out_ida_free;
 
 	mutex_lock(&lock);
 	list_add_tail(&nullb->list, &nullb_list);
 	mutex_unlock(&lock);
 
 	return 0;
+
+out_ida_free:
+	ida_free(&nullb_indexes, nullb->index);
 out_cleanup_zone:
 	if (dev->zoned)
 		null_zone_exit(dev);
diff --git linux-libre-4.19.255-gnu1/drivers/bluetooth/hci_intel.c linux-libre-4.19.256-gnu1/drivers/bluetooth/hci_intel.c
index a6ae812deae3..7af43374555a 100644
--- linux-libre-4.19.255-gnu1/drivers/bluetooth/hci_intel.c
+++ linux-libre-4.19.256-gnu1/drivers/bluetooth/hci_intel.c
@@ -1253,7 +1253,11 @@ static struct platform_driver intel_driver = {
 
 int __init intel_init(void)
 {
-	platform_driver_register(&intel_driver);
+	int err;
+
+	err = platform_driver_register(&intel_driver);
+	if (err)
+		return err;
 
 	return hci_uart_register_proto(&intel_proto);
 }
diff --git linux-libre-4.19.255-gnu1/drivers/bus/hisi_lpc.c linux-libre-4.19.256-gnu1/drivers/bus/hisi_lpc.c
index cbd970fb02f1..43342ea82afa 100644
--- linux-libre-4.19.255-gnu1/drivers/bus/hisi_lpc.c
+++ linux-libre-4.19.256-gnu1/drivers/bus/hisi_lpc.c
@@ -504,13 +504,13 @@ static int hisi_lpc_acpi_probe(struct device *hostdev)
 {
 	struct acpi_device *adev = ACPI_COMPANION(hostdev);
 	struct acpi_device *child;
+	struct platform_device *pdev;
 	int ret;
 
 	/* Only consider the children of the host */
 	list_for_each_entry(child, &adev->children, node) {
 		const char *hid = acpi_device_hid(child);
 		const struct hisi_lpc_acpi_cell *cell;
-		struct platform_device *pdev;
 		const struct resource *res;
 		bool found = false;
 		int num_res;
@@ -573,22 +573,24 @@ static int hisi_lpc_acpi_probe(struct device *hostdev)
 
 		ret = platform_device_add_resources(pdev, res, num_res);
 		if (ret)
-			goto fail;
+			goto fail_put_device;
 
 		ret = platform_device_add_data(pdev, cell->pdata,
 					       cell->pdata_size);
 		if (ret)
-			goto fail;
+			goto fail_put_device;
 
 		ret = platform_device_add(pdev);
 		if (ret)
-			goto fail;
+			goto fail_put_device;
 
 		acpi_device_set_enumerated(child);
 	}
 
 	return 0;
 
+fail_put_device:
+	platform_device_put(pdev);
 fail:
 	hisi_lpc_acpi_remove(hostdev);
 	return ret;
diff --git linux-libre-4.19.255-gnu1/drivers/clk/qcom/gcc-ipq8074.c linux-libre-4.19.256-gnu1/drivers/clk/qcom/gcc-ipq8074.c
index 708c486a6e96..ee41aec106ac 100644
--- linux-libre-4.19.255-gnu1/drivers/clk/qcom/gcc-ipq8074.c
+++ linux-libre-4.19.256-gnu1/drivers/clk/qcom/gcc-ipq8074.c
@@ -675,6 +675,7 @@ static struct clk_branch gcc_sleep_clk_src = {
 			},
 			.num_parents = 1,
 			.ops = &clk_branch2_ops,
+			.flags = CLK_IS_CRITICAL,
 		},
 	},
 };
@@ -1796,8 +1797,10 @@ static struct clk_regmap_div nss_port4_tx_div_clk_src = {
 static const struct freq_tbl ftbl_nss_port5_rx_clk_src[] = {
 	F(19200000, P_XO, 1, 0, 0),
 	F(25000000, P_UNIPHY1_RX, 12.5, 0, 0),
+	F(25000000, P_UNIPHY0_RX, 5, 0, 0),
 	F(78125000, P_UNIPHY1_RX, 4, 0, 0),
 	F(125000000, P_UNIPHY1_RX, 2.5, 0, 0),
+	F(125000000, P_UNIPHY0_RX, 1, 0, 0),
 	F(156250000, P_UNIPHY1_RX, 2, 0, 0),
 	F(312500000, P_UNIPHY1_RX, 1, 0, 0),
 	{ }
@@ -1836,8 +1839,10 @@ static struct clk_regmap_div nss_port5_rx_div_clk_src = {
 static const struct freq_tbl ftbl_nss_port5_tx_clk_src[] = {
 	F(19200000, P_XO, 1, 0, 0),
 	F(25000000, P_UNIPHY1_TX, 12.5, 0, 0),
+	F(25000000, P_UNIPHY0_TX, 5, 0, 0),
 	F(78125000, P_UNIPHY1_TX, 4, 0, 0),
 	F(125000000, P_UNIPHY1_TX, 2.5, 0, 0),
+	F(125000000, P_UNIPHY0_TX, 1, 0, 0),
 	F(156250000, P_UNIPHY1_TX, 2, 0, 0),
 	F(312500000, P_UNIPHY1_TX, 1, 0, 0),
 	{ }
@@ -1875,8 +1880,10 @@ static struct clk_regmap_div nss_port5_tx_div_clk_src = {
 
 static const struct freq_tbl ftbl_nss_port6_rx_clk_src[] = {
 	F(19200000, P_XO, 1, 0, 0),
+	F(25000000, P_UNIPHY2_RX, 5, 0, 0),
 	F(25000000, P_UNIPHY2_RX, 12.5, 0, 0),
 	F(78125000, P_UNIPHY2_RX, 4, 0, 0),
+	F(125000000, P_UNIPHY2_RX, 1, 0, 0),
 	F(125000000, P_UNIPHY2_RX, 2.5, 0, 0),
 	F(156250000, P_UNIPHY2_RX, 2, 0, 0),
 	F(312500000, P_UNIPHY2_RX, 1, 0, 0),
@@ -1915,8 +1922,10 @@ static struct clk_regmap_div nss_port6_rx_div_clk_src = {
 
 static const struct freq_tbl ftbl_nss_port6_tx_clk_src[] = {
 	F(19200000, P_XO, 1, 0, 0),
+	F(25000000, P_UNIPHY2_TX, 5, 0, 0),
 	F(25000000, P_UNIPHY2_TX, 12.5, 0, 0),
 	F(78125000, P_UNIPHY2_TX, 4, 0, 0),
+	F(125000000, P_UNIPHY2_TX, 1, 0, 0),
 	F(125000000, P_UNIPHY2_TX, 2.5, 0, 0),
 	F(156250000, P_UNIPHY2_TX, 2, 0, 0),
 	F(312500000, P_UNIPHY2_TX, 1, 0, 0),
@@ -3354,6 +3363,7 @@ static struct clk_branch gcc_nssnoc_ubi1_ahb_clk = {
 
 static struct clk_branch gcc_ubi0_ahb_clk = {
 	.halt_reg = 0x6820c,
+	.halt_check = BRANCH_HALT_DELAY,
 	.clkr = {
 		.enable_reg = 0x6820c,
 		.enable_mask = BIT(0),
@@ -3371,6 +3381,7 @@ static struct clk_branch gcc_ubi0_ahb_clk = {
 
 static struct clk_branch gcc_ubi0_axi_clk = {
 	.halt_reg = 0x68200,
+	.halt_check = BRANCH_HALT_DELAY,
 	.clkr = {
 		.enable_reg = 0x68200,
 		.enable_mask = BIT(0),
@@ -3388,6 +3399,7 @@ static struct clk_branch gcc_ubi0_axi_clk = {
 
 static struct clk_branch gcc_ubi0_nc_axi_clk = {
 	.halt_reg = 0x68204,
+	.halt_check = BRANCH_HALT_DELAY,
 	.clkr = {
 		.enable_reg = 0x68204,
 		.enable_mask = BIT(0),
@@ -3405,6 +3417,7 @@ static struct clk_branch gcc_ubi0_nc_axi_clk = {
 
 static struct clk_branch gcc_ubi0_core_clk = {
 	.halt_reg = 0x68210,
+	.halt_check = BRANCH_HALT_DELAY,
 	.clkr = {
 		.enable_reg = 0x68210,
 		.enable_mask = BIT(0),
@@ -3422,6 +3435,7 @@ static struct clk_branch gcc_ubi0_core_clk = {
 
 static struct clk_branch gcc_ubi0_mpt_clk = {
 	.halt_reg = 0x68208,
+	.halt_check = BRANCH_HALT_DELAY,
 	.clkr = {
 		.enable_reg = 0x68208,
 		.enable_mask = BIT(0),
@@ -3439,6 +3453,7 @@ static struct clk_branch gcc_ubi0_mpt_clk = {
 
 static struct clk_branch gcc_ubi1_ahb_clk = {
 	.halt_reg = 0x6822c,
+	.halt_check = BRANCH_HALT_DELAY,
 	.clkr = {
 		.enable_reg = 0x6822c,
 		.enable_mask = BIT(0),
@@ -3456,6 +3471,7 @@ static struct clk_branch gcc_ubi1_ahb_clk = {
 
 static struct clk_branch gcc_ubi1_axi_clk = {
 	.halt_reg = 0x68220,
+	.halt_check = BRANCH_HALT_DELAY,
 	.clkr = {
 		.enable_reg = 0x68220,
 		.enable_mask = BIT(0),
@@ -3473,6 +3489,7 @@ static struct clk_branch gcc_ubi1_axi_clk = {
 
 static struct clk_branch gcc_ubi1_nc_axi_clk = {
 	.halt_reg = 0x68224,
+	.halt_check = BRANCH_HALT_DELAY,
 	.clkr = {
 		.enable_reg = 0x68224,
 		.enable_mask = BIT(0),
@@ -3490,6 +3507,7 @@ static struct clk_branch gcc_ubi1_nc_axi_clk = {
 
 static struct clk_branch gcc_ubi1_core_clk = {
 	.halt_reg = 0x68230,
+	.halt_check = BRANCH_HALT_DELAY,
 	.clkr = {
 		.enable_reg = 0x68230,
 		.enable_mask = BIT(0),
@@ -3507,6 +3525,7 @@ static struct clk_branch gcc_ubi1_core_clk = {
 
 static struct clk_branch gcc_ubi1_mpt_clk = {
 	.halt_reg = 0x68228,
+	.halt_check = BRANCH_HALT_DELAY,
 	.clkr = {
 		.enable_reg = 0x68228,
 		.enable_mask = BIT(0),
diff --git linux-libre-4.19.255-gnu1/drivers/clk/renesas/r9a06g032-clocks.c linux-libre-4.19.256-gnu1/drivers/clk/renesas/r9a06g032-clocks.c
index 6e03b467395b..ec48b5516e17 100644
--- linux-libre-4.19.255-gnu1/drivers/clk/renesas/r9a06g032-clocks.c
+++ linux-libre-4.19.256-gnu1/drivers/clk/renesas/r9a06g032-clocks.c
@@ -277,8 +277,8 @@ static const struct r9a06g032_clkdesc r9a06g032_clocks[] __initconst = {
 		.name = "uart_group_012",
 		.type = K_BITSEL,
 		.source = 1 + R9A06G032_DIV_UART,
-		/* R9A06G032_SYSCTRL_REG_PWRCTRL_PG1_PR2 */
-		.dual.sel = ((0xec / 4) << 5) | 24,
+		/* R9A06G032_SYSCTRL_REG_PWRCTRL_PG0_0 */
+		.dual.sel = ((0x34 / 4) << 5) | 30,
 		.dual.group = 0,
 	},
 	{
@@ -286,8 +286,8 @@ static const struct r9a06g032_clkdesc r9a06g032_clocks[] __initconst = {
 		.name = "uart_group_34567",
 		.type = K_BITSEL,
 		.source = 1 + R9A06G032_DIV_P2_PG,
-		/* R9A06G032_SYSCTRL_REG_PWRCTRL_PG0_0 */
-		.dual.sel = ((0x34 / 4) << 5) | 30,
+		/* R9A06G032_SYSCTRL_REG_PWRCTRL_PG1_PR2 */
+		.dual.sel = ((0xec / 4) << 5) | 24,
 		.dual.group = 1,
 	},
 	D_UGATE(CLK_UART0, "clk_uart0", UART_GROUP_012, 0, 0, 0x1b2, 0x1b3, 0x1b4, 0x1b5),
diff --git linux-libre-4.19.255-gnu1/drivers/crypto/hisilicon/sec/sec_algs.c linux-libre-4.19.256-gnu1/drivers/crypto/hisilicon/sec/sec_algs.c
index 3e3cc28d5cfe..f672dc1ecfac 100644
--- linux-libre-4.19.255-gnu1/drivers/crypto/hisilicon/sec/sec_algs.c
+++ linux-libre-4.19.256-gnu1/drivers/crypto/hisilicon/sec/sec_algs.c
@@ -457,7 +457,7 @@ static void sec_skcipher_alg_callback(struct sec_bd_info *sec_resp,
 		 */
 	}
 
-	mutex_lock(&ctx->queue->queuelock);
+	spin_lock_bh(&ctx->queue->queuelock);
 	/* Put the IV in place for chained cases */
 	switch (ctx->cipher_alg) {
 	case SEC_C_AES_CBC_128:
@@ -517,7 +517,7 @@ static void sec_skcipher_alg_callback(struct sec_bd_info *sec_resp,
 			list_del(&backlog_req->backlog_head);
 		}
 	}
-	mutex_unlock(&ctx->queue->queuelock);
+	spin_unlock_bh(&ctx->queue->queuelock);
 
 	mutex_lock(&sec_req->lock);
 	list_del(&sec_req_el->head);
@@ -806,7 +806,7 @@ static int sec_alg_skcipher_crypto(struct skcipher_request *skreq,
 	 */
 
 	/* Grab a big lock for a long time to avoid concurrency issues */
-	mutex_lock(&queue->queuelock);
+	spin_lock_bh(&queue->queuelock);
 
 	/*
 	 * Can go on to queue if we have space in either:
@@ -822,15 +822,15 @@ static int sec_alg_skcipher_crypto(struct skcipher_request *skreq,
 		ret = -EBUSY;
 		if ((skreq->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) {
 			list_add_tail(&sec_req->backlog_head, &ctx->backlog);
-			mutex_unlock(&queue->queuelock);
+			spin_unlock_bh(&queue->queuelock);
 			goto out;
 		}
 
-		mutex_unlock(&queue->queuelock);
+		spin_unlock_bh(&queue->queuelock);
 		goto err_free_elements;
 	}
 	ret = sec_send_request(sec_req, queue);
-	mutex_unlock(&queue->queuelock);
+	spin_unlock_bh(&queue->queuelock);
 	if (ret)
 		goto err_free_elements;
 
@@ -889,7 +889,7 @@ static int sec_alg_skcipher_init(struct crypto_skcipher *tfm)
 	if (IS_ERR(ctx->queue))
 		return PTR_ERR(ctx->queue);
 
-	mutex_init(&ctx->queue->queuelock);
+	spin_lock_init(&ctx->queue->queuelock);
 	ctx->queue->havesoftqueue = false;
 
 	return 0;
diff --git linux-libre-4.19.255-gnu1/drivers/crypto/hisilicon/sec/sec_drv.h linux-libre-4.19.256-gnu1/drivers/crypto/hisilicon/sec/sec_drv.h
index 2d2f186674ba..ddc5d6bd7574 100644
--- linux-libre-4.19.255-gnu1/drivers/crypto/hisilicon/sec/sec_drv.h
+++ linux-libre-4.19.256-gnu1/drivers/crypto/hisilicon/sec/sec_drv.h
@@ -347,7 +347,7 @@ struct sec_queue {
 	DECLARE_BITMAP(unprocessed, SEC_QUEUE_LEN);
 	DECLARE_KFIFO_PTR(softqueue, typeof(struct sec_request_el *));
 	bool havesoftqueue;
-	struct mutex queuelock;
+	spinlock_t queuelock;
 	void *shadow[SEC_QUEUE_LEN];
 };
 
diff --git linux-libre-4.19.255-gnu1/drivers/dma/sprd-dma.c linux-libre-4.19.256-gnu1/drivers/dma/sprd-dma.c
index 0fadf6a08494..4ec9a924a338 100644
--- linux-libre-4.19.255-gnu1/drivers/dma/sprd-dma.c
+++ linux-libre-4.19.256-gnu1/drivers/dma/sprd-dma.c
@@ -987,11 +987,8 @@ static int sprd_dma_remove(struct platform_device *pdev)
 {
 	struct sprd_dma_dev *sdev = platform_get_drvdata(pdev);
 	struct sprd_dma_chn *c, *cn;
-	int ret;
 
-	ret = pm_runtime_get_sync(&pdev->dev);
-	if (ret < 0)
-		return ret;
+	pm_runtime_get_sync(&pdev->dev);
 
 	/* explicitly free the irq */
 	if (sdev->irq > 0)
diff --git linux-libre-4.19.255-gnu1/drivers/firmware/arm_scpi.c linux-libre-4.19.256-gnu1/drivers/firmware/arm_scpi.c
index baa7280eccb3..1ce27bb9dead 100644
--- linux-libre-4.19.255-gnu1/drivers/firmware/arm_scpi.c
+++ linux-libre-4.19.256-gnu1/drivers/firmware/arm_scpi.c
@@ -826,7 +826,7 @@ static int scpi_init_versions(struct scpi_drvinfo *info)
 		info->firmware_version = le32_to_cpu(caps.platform_version);
 	}
 	/* Ignore error if not implemented */
-	if (scpi_info->is_legacy && ret == -EOPNOTSUPP)
+	if (info->is_legacy && ret == -EOPNOTSUPP)
 		return 0;
 
 	return ret;
@@ -916,13 +916,14 @@ static int scpi_probe(struct platform_device *pdev)
 	struct resource res;
 	struct device *dev = &pdev->dev;
 	struct device_node *np = dev->of_node;
+	struct scpi_drvinfo *scpi_drvinfo;
 
-	scpi_info = devm_kzalloc(dev, sizeof(*scpi_info), GFP_KERNEL);
-	if (!scpi_info)
+	scpi_drvinfo = devm_kzalloc(dev, sizeof(*scpi_drvinfo), GFP_KERNEL);
+	if (!scpi_drvinfo)
 		return -ENOMEM;
 
 	if (of_match_device(legacy_scpi_of_match, &pdev->dev))
-		scpi_info->is_legacy = true;
+		scpi_drvinfo->is_legacy = true;
 
 	count = of_count_phandle_with_args(np, "mboxes", "#mbox-cells");
 	if (count < 0) {
@@ -930,19 +931,19 @@ static int scpi_probe(struct platform_device *pdev)
 		return -ENODEV;
 	}
 
-	scpi_info->channels = devm_kcalloc(dev, count, sizeof(struct scpi_chan),
-					   GFP_KERNEL);
-	if (!scpi_info->channels)
+	scpi_drvinfo->channels =
+		devm_kcalloc(dev, count, sizeof(struct scpi_chan), GFP_KERNEL);
+	if (!scpi_drvinfo->channels)
 		return -ENOMEM;
 
-	ret = devm_add_action(dev, scpi_free_channels, scpi_info);
+	ret = devm_add_action(dev, scpi_free_channels, scpi_drvinfo);
 	if (ret)
 		return ret;
 
-	for (; scpi_info->num_chans < count; scpi_info->num_chans++) {
+	for (; scpi_drvinfo->num_chans < count; scpi_drvinfo->num_chans++) {
 		resource_size_t size;
-		int idx = scpi_info->num_chans;
-		struct scpi_chan *pchan = scpi_info->channels + idx;
+		int idx = scpi_drvinfo->num_chans;
+		struct scpi_chan *pchan = scpi_drvinfo->channels + idx;
 		struct mbox_client *cl = &pchan->cl;
 		struct device_node *shmem = of_parse_phandle(np, "shmem", idx);
 
@@ -986,49 +987,57 @@ static int scpi_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	scpi_info->commands = scpi_std_commands;
+	scpi_drvinfo->commands = scpi_std_commands;
 
-	platform_set_drvdata(pdev, scpi_info);
+	platform_set_drvdata(pdev, scpi_drvinfo);
 
-	if (scpi_info->is_legacy) {
+	if (scpi_drvinfo->is_legacy) {
 		/* Replace with legacy variants */
 		scpi_ops.clk_set_val = legacy_scpi_clk_set_val;
-		scpi_info->commands = scpi_legacy_commands;
+		scpi_drvinfo->commands = scpi_legacy_commands;
 
 		/* Fill priority bitmap */
 		for (idx = 0; idx < ARRAY_SIZE(legacy_hpriority_cmds); idx++)
 			set_bit(legacy_hpriority_cmds[idx],
-				scpi_info->cmd_priority);
+				scpi_drvinfo->cmd_priority);
 	}
 
-	ret = scpi_init_versions(scpi_info);
+	scpi_info = scpi_drvinfo;
+
+	ret = scpi_init_versions(scpi_drvinfo);
 	if (ret) {
 		dev_err(dev, "incorrect or no SCP firmware found\n");
+		scpi_info = NULL;
 		return ret;
 	}
 
-	if (scpi_info->is_legacy && !scpi_info->protocol_version &&
-	    !scpi_info->firmware_version)
+	if (scpi_drvinfo->is_legacy && !scpi_drvinfo->protocol_version &&
+	    !scpi_drvinfo->firmware_version)
 		dev_info(dev, "SCP Protocol legacy pre-1.0 firmware\n");
 	else
 		dev_info(dev, "SCP Protocol %lu.%lu Firmware %lu.%lu.%lu version\n",
 			 FIELD_GET(PROTO_REV_MAJOR_MASK,
-				   scpi_info->protocol_version),
+				   scpi_drvinfo->protocol_version),
 			 FIELD_GET(PROTO_REV_MINOR_MASK,
-				   scpi_info->protocol_version),
+				   scpi_drvinfo->protocol_version),
 			 FIELD_GET(FW_REV_MAJOR_MASK,
-				   scpi_info->firmware_version),
+				   scpi_drvinfo->firmware_version),
 			 FIELD_GET(FW_REV_MINOR_MASK,
-				   scpi_info->firmware_version),
+				   scpi_drvinfo->firmware_version),
 			 FIELD_GET(FW_REV_PATCH_MASK,
-				   scpi_info->firmware_version));
-	scpi_info->scpi_ops = &scpi_ops;
+				   scpi_drvinfo->firmware_version));
 
 	ret = devm_device_add_groups(dev, versions_groups);
 	if (ret)
 		dev_err(dev, "unable to create sysfs version group\n");
 
-	return devm_of_platform_populate(dev);
+	scpi_drvinfo->scpi_ops = &scpi_ops;
+
+	ret = devm_of_platform_populate(dev);
+	if (ret)
+		scpi_info = NULL;
+
+	return ret;
 }
 
 static const struct of_device_id scpi_of_match[] = {
diff --git linux-libre-4.19.255-gnu1/drivers/fpga/altera-pr-ip-core.c linux-libre-4.19.256-gnu1/drivers/fpga/altera-pr-ip-core.c
index 65e0b6a2c031..059ba27f3c29 100644
--- linux-libre-4.19.255-gnu1/drivers/fpga/altera-pr-ip-core.c
+++ linux-libre-4.19.256-gnu1/drivers/fpga/altera-pr-ip-core.c
@@ -108,7 +108,7 @@ static int alt_pr_fpga_write(struct fpga_manager *mgr, const char *buf,
 	u32 *buffer_32 = (u32 *)buf;
 	size_t i = 0;
 
-	if (count <= 0)
+	if (!count)
 		return -EINVAL;
 
 	/* Write out the complete 32-bit chunks */
diff --git linux-libre-4.19.255-gnu1/drivers/gpio/gpiolib-of.c linux-libre-4.19.256-gnu1/drivers/gpio/gpiolib-of.c
index 09999e3e3109..7bda0f59c109 100644
--- linux-libre-4.19.255-gnu1/drivers/gpio/gpiolib-of.c
+++ linux-libre-4.19.256-gnu1/drivers/gpio/gpiolib-of.c
@@ -476,7 +476,8 @@ int of_mm_gpiochip_add_data(struct device_node *np,
 	if (mm_gc->save_regs)
 		mm_gc->save_regs(mm_gc);
 
-	mm_gc->gc.of_node = np;
+	of_node_put(mm_gc->gc.of_node);
+	mm_gc->gc.of_node = of_node_get(np);
 
 	ret = gpiochip_add_data(gc, data);
 	if (ret)
@@ -484,6 +485,7 @@ int of_mm_gpiochip_add_data(struct device_node *np,
 
 	return 0;
 err2:
+	of_node_put(np);
 	iounmap(mm_gc->regs);
 err1:
 	kfree(gc->label);
diff --git linux-libre-4.19.255-gnu1/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c linux-libre-4.19.256-gnu1/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index e25952d516e2..b51e7839b41b 100644
--- linux-libre-4.19.255-gnu1/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ linux-libre-4.19.256-gnu1/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -883,6 +883,10 @@ int amdgpu_bo_pin_restricted(struct amdgpu_bo *bo, u32 domain,
 	if (WARN_ON_ONCE(min_offset > max_offset))
 		return -EINVAL;
 
+	/* Check domain to be pinned to against preferred domains */
+	if (bo->preferred_domains & domain)
+		domain = bo->preferred_domains & domain;
+
 	/* A shared bo cannot be migrated to VRAM */
 	if (bo->prime_shared_count) {
 		if (domain & AMDGPU_GEM_DOMAIN_GTT)
diff --git linux-libre-4.19.255-gnu1/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c linux-libre-4.19.256-gnu1/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
index b6e7cc9082ca..31b75d3ca6e9 100644
--- linux-libre-4.19.255-gnu1/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
+++ linux-libre-4.19.256-gnu1/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
@@ -1301,10 +1301,21 @@ static struct i2c_driver adv7511_driver = {
 
 static int __init adv7511_init(void)
 {
-	if (IS_ENABLED(CONFIG_DRM_MIPI_DSI))
-		mipi_dsi_driver_register(&adv7533_dsi_driver);
+	int ret;
+
+	if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) {
+		ret = mipi_dsi_driver_register(&adv7533_dsi_driver);
+		if (ret)
+			return ret;
+	}
 
-	return i2c_add_driver(&adv7511_driver);
+	ret = i2c_add_driver(&adv7511_driver);
+	if (ret) {
+		if (IS_ENABLED(CONFIG_DRM_MIPI_DSI))
+			mipi_dsi_driver_unregister(&adv7533_dsi_driver);
+	}
+
+	return ret;
 }
 module_init(adv7511_init);
 
diff --git linux-libre-4.19.255-gnu1/drivers/gpu/drm/bridge/sil-sii8620.c linux-libre-4.19.256-gnu1/drivers/gpu/drm/bridge/sil-sii8620.c
index ea433bb189ca..c72092319a53 100644
--- linux-libre-4.19.255-gnu1/drivers/gpu/drm/bridge/sil-sii8620.c
+++ linux-libre-4.19.256-gnu1/drivers/gpu/drm/bridge/sil-sii8620.c
@@ -607,7 +607,7 @@ static void *sii8620_burst_get_tx_buf(struct sii8620 *ctx, int len)
 	u8 *buf = &ctx->burst.tx_buf[ctx->burst.tx_count];
 	int size = len + 2;
 
-	if (ctx->burst.tx_count + size > ARRAY_SIZE(ctx->burst.tx_buf)) {
+	if (ctx->burst.tx_count + size >= ARRAY_SIZE(ctx->burst.tx_buf)) {
 		dev_err(ctx->dev, "TX-BLK buffer exhausted\n");
 		ctx->error = -EINVAL;
 		return NULL;
@@ -624,7 +624,7 @@ static u8 *sii8620_burst_get_rx_buf(struct sii8620 *ctx, int len)
 	u8 *buf = &ctx->burst.rx_buf[ctx->burst.rx_count];
 	int size = len + 1;
 
-	if (ctx->burst.tx_count + size > ARRAY_SIZE(ctx->burst.tx_buf)) {
+	if (ctx->burst.rx_count + size >= ARRAY_SIZE(ctx->burst.rx_buf)) {
 		dev_err(ctx->dev, "RX-BLK buffer exhausted\n");
 		ctx->error = -EINVAL;
 		return NULL;
diff --git linux-libre-4.19.255-gnu1/drivers/gpu/drm/mediatek/mtk_dpi.c linux-libre-4.19.256-gnu1/drivers/gpu/drm/mediatek/mtk_dpi.c
index 6c0ea39d5739..a263ac4aaab2 100644
--- linux-libre-4.19.255-gnu1/drivers/gpu/drm/mediatek/mtk_dpi.c
+++ linux-libre-4.19.256-gnu1/drivers/gpu/drm/mediatek/mtk_dpi.c
@@ -52,13 +52,7 @@ enum mtk_dpi_out_channel_swap {
 };
 
 enum mtk_dpi_out_color_format {
-	MTK_DPI_COLOR_FORMAT_RGB,
-	MTK_DPI_COLOR_FORMAT_RGB_FULL,
-	MTK_DPI_COLOR_FORMAT_YCBCR_444,
-	MTK_DPI_COLOR_FORMAT_YCBCR_422,
-	MTK_DPI_COLOR_FORMAT_XV_YCC,
-	MTK_DPI_COLOR_FORMAT_YCBCR_444_FULL,
-	MTK_DPI_COLOR_FORMAT_YCBCR_422_FULL
+	MTK_DPI_COLOR_FORMAT_RGB
 };
 
 struct mtk_dpi {
@@ -347,24 +341,11 @@ static void mtk_dpi_config_2n_h_fre(struct mtk_dpi *dpi)
 static void mtk_dpi_config_color_format(struct mtk_dpi *dpi,
 					enum mtk_dpi_out_color_format format)
 {
-	if ((format == MTK_DPI_COLOR_FORMAT_YCBCR_444) ||
-	    (format == MTK_DPI_COLOR_FORMAT_YCBCR_444_FULL)) {
-		mtk_dpi_config_yuv422_enable(dpi, false);
-		mtk_dpi_config_csc_enable(dpi, true);
-		mtk_dpi_config_swap_input(dpi, false);
-		mtk_dpi_config_channel_swap(dpi, MTK_DPI_OUT_CHANNEL_SWAP_BGR);
-	} else if ((format == MTK_DPI_COLOR_FORMAT_YCBCR_422) ||
-		   (format == MTK_DPI_COLOR_FORMAT_YCBCR_422_FULL)) {
-		mtk_dpi_config_yuv422_enable(dpi, true);
-		mtk_dpi_config_csc_enable(dpi, true);
-		mtk_dpi_config_swap_input(dpi, true);
-		mtk_dpi_config_channel_swap(dpi, MTK_DPI_OUT_CHANNEL_SWAP_RGB);
-	} else {
-		mtk_dpi_config_yuv422_enable(dpi, false);
-		mtk_dpi_config_csc_enable(dpi, false);
-		mtk_dpi_config_swap_input(dpi, false);
-		mtk_dpi_config_channel_swap(dpi, MTK_DPI_OUT_CHANNEL_SWAP_RGB);
-	}
+	/* only support RGB888 */
+	mtk_dpi_config_yuv422_enable(dpi, false);
+	mtk_dpi_config_csc_enable(dpi, false);
+	mtk_dpi_config_swap_input(dpi, false);
+	mtk_dpi_config_channel_swap(dpi, MTK_DPI_OUT_CHANNEL_SWAP_RGB);
 }
 
 static void mtk_dpi_power_off(struct mtk_dpi *dpi, enum mtk_dpi_power_ctl pctl)
diff --git linux-libre-4.19.255-gnu1/drivers/gpu/drm/mediatek/mtk_dsi.c linux-libre-4.19.256-gnu1/drivers/gpu/drm/mediatek/mtk_dsi.c
index 0dd317ac5fe5..a629a69c2756 100644
--- linux-libre-4.19.255-gnu1/drivers/gpu/drm/mediatek/mtk_dsi.c
+++ linux-libre-4.19.256-gnu1/drivers/gpu/drm/mediatek/mtk_dsi.c
@@ -651,6 +651,8 @@ static void mtk_dsi_poweroff(struct mtk_dsi *dsi)
 	mtk_dsi_reset_engine(dsi);
 	mtk_dsi_lane0_ulp_mode_enter(dsi);
 	mtk_dsi_clk_ulp_mode_enter(dsi);
+	/* set the lane number as 0 to pull down mipi */
+	writel(0, dsi->regs + DSI_TXRX_CTRL);
 
 	mtk_dsi_disable(dsi);
 
diff --git linux-libre-4.19.255-gnu1/drivers/gpu/drm/meson/meson_drv.c linux-libre-4.19.256-gnu1/drivers/gpu/drm/meson/meson_drv.c
index 1887473cdd79..9959522ce802 100644
--- linux-libre-4.19.255-gnu1/drivers/gpu/drm/meson/meson_drv.c
+++ linux-libre-4.19.256-gnu1/drivers/gpu/drm/meson/meson_drv.c
@@ -141,8 +141,11 @@ static bool meson_vpu_has_available_connectors(struct device *dev)
 	for_each_endpoint_of_node(dev->of_node, ep) {
 		/* If the endpoint node exists, consider it enabled */
 		remote = of_graph_get_remote_port(ep);
-		if (remote)
+		if (remote) {
+			of_node_put(remote);
+			of_node_put(ep);
 			return true;
+		}
 	}
 
 	return false;
diff --git linux-libre-4.19.255-gnu1/drivers/gpu/drm/msm/disp/mdp5/mdp5_pipe.c linux-libre-4.19.256-gnu1/drivers/gpu/drm/msm/disp/mdp5/mdp5_pipe.c
index 88de12225582..69fe09b41087 100644
--- linux-libre-4.19.255-gnu1/drivers/gpu/drm/msm/disp/mdp5/mdp5_pipe.c
+++ linux-libre-4.19.256-gnu1/drivers/gpu/drm/msm/disp/mdp5/mdp5_pipe.c
@@ -134,12 +134,13 @@ int mdp5_pipe_release(struct drm_atomic_state *s, struct mdp5_hw_pipe *hwpipe)
 {
 	struct msm_drm_private *priv = s->dev->dev_private;
 	struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(priv->kms));
-	struct mdp5_global_state *state = mdp5_get_global_state(s);
+	struct mdp5_global_state *state;
 	struct mdp5_hw_pipe_state *new_state;
 
 	if (!hwpipe)
 		return 0;
 
+	state = mdp5_get_global_state(s);
 	if (IS_ERR(state))
 		return PTR_ERR(state);
 
diff --git linux-libre-4.19.255-gnu1/drivers/gpu/drm/nouveau/nvkm/subdev/bios/base.c linux-libre-4.19.256-gnu1/drivers/gpu/drm/nouveau/nvkm/subdev/bios/base.c
index 8bff14ae16b0..f0368d9a0154 100644
--- linux-libre-4.19.255-gnu1/drivers/gpu/drm/nouveau/nvkm/subdev/bios/base.c
+++ linux-libre-4.19.256-gnu1/drivers/gpu/drm/nouveau/nvkm/subdev/bios/base.c
@@ -33,7 +33,7 @@ nvbios_addr(struct nvkm_bios *bios, u32 *addr, u8 size)
 {
 	u32 p = *addr;
 
-	if (*addr > bios->image0_size && bios->imaged_addr) {
+	if (*addr >= bios->image0_size && bios->imaged_addr) {
 		*addr -= bios->image0_size;
 		*addr += bios->imaged_addr;
 	}
diff --git linux-libre-4.19.255-gnu1/drivers/gpu/drm/radeon/ni_dpm.c linux-libre-4.19.256-gnu1/drivers/gpu/drm/radeon/ni_dpm.c
index f86ca163dcf3..a7273c01de34 100644
--- linux-libre-4.19.255-gnu1/drivers/gpu/drm/radeon/ni_dpm.c
+++ linux-libre-4.19.256-gnu1/drivers/gpu/drm/radeon/ni_dpm.c
@@ -2738,10 +2738,10 @@ static int ni_set_mc_special_registers(struct radeon_device *rdev,
 					table->mc_reg_table_entry[k].mc_data[j] |= 0x100;
 			}
 			j++;
-			if (j > SMC_NISLANDS_MC_REGISTER_ARRAY_SIZE)
-				return -EINVAL;
 			break;
 		case MC_SEQ_RESERVE_M >> 2:
+			if (j >= SMC_NISLANDS_MC_REGISTER_ARRAY_SIZE)
+				return -EINVAL;
 			temp_reg = RREG32(MC_PMG_CMD_MRS1);
 			table->mc_reg_address[j].s1 = MC_PMG_CMD_MRS1 >> 2;
 			table->mc_reg_address[j].s0 = MC_SEQ_PMG_CMD_MRS1_LP >> 2;
@@ -2750,8 +2750,6 @@ static int ni_set_mc_special_registers(struct radeon_device *rdev,
 					(temp_reg & 0xffff0000) |
 					(table->mc_reg_table_entry[k].mc_data[i] & 0x0000ffff);
 			j++;
-			if (j > SMC_NISLANDS_MC_REGISTER_ARRAY_SIZE)
-				return -EINVAL;
 			break;
 		default:
 			break;
diff --git linux-libre-4.19.255-gnu1/drivers/gpu/drm/rockchip/rockchip_drm_vop.c linux-libre-4.19.256-gnu1/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index c0b647435974..69eb0de9973f 100644
--- linux-libre-4.19.255-gnu1/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ linux-libre-4.19.256-gnu1/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -1088,6 +1088,9 @@ static struct drm_crtc_state *vop_crtc_duplicate_state(struct drm_crtc *crtc)
 {
 	struct rockchip_crtc_state *rockchip_state;
 
+	if (WARN_ON(!crtc->state))
+		return NULL;
+
 	rockchip_state = kzalloc(sizeof(*rockchip_state), GFP_KERNEL);
 	if (!rockchip_state)
 		return NULL;
diff --git linux-libre-4.19.255-gnu1/drivers/gpu/drm/vc4/vc4_dsi.c linux-libre-4.19.256-gnu1/drivers/gpu/drm/vc4/vc4_dsi.c
index 0c607eb33d7e..77003ce666a4 100644
--- linux-libre-4.19.255-gnu1/drivers/gpu/drm/vc4/vc4_dsi.c
+++ linux-libre-4.19.256-gnu1/drivers/gpu/drm/vc4/vc4_dsi.c
@@ -853,11 +853,9 @@ static bool vc4_dsi_encoder_mode_fixup(struct drm_encoder *encoder,
 	/* Find what divider gets us a faster clock than the requested
 	 * pixel clock.
 	 */
-	for (divider = 1; divider < 8; divider++) {
-		if (parent_rate / divider < pll_clock) {
-			divider--;
+	for (divider = 1; divider < 255; divider++) {
+		if (parent_rate / (divider + 1) < pll_clock)
 			break;
-		}
 	}
 
 	/* Now that we've picked a PLL divider, calculate back to its
diff --git linux-libre-4.19.255-gnu1/drivers/hid/hid-alps.c linux-libre-4.19.256-gnu1/drivers/hid/hid-alps.c
index 3eddd8f73b57..116ece4be2c9 100644
--- linux-libre-4.19.255-gnu1/drivers/hid/hid-alps.c
+++ linux-libre-4.19.256-gnu1/drivers/hid/hid-alps.c
@@ -835,6 +835,8 @@ static const struct hid_device_id alps_id[] = {
 		USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_U1_DUAL) },
 	{ HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY,
 		USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_U1) },
+	{ HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY,
+		USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_U1_UNICORN_LEGACY) },
 	{ HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY,
 		USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_T4_BTNLESS) },
 	{ }
diff --git linux-libre-4.19.255-gnu1/drivers/hid/hid-cp2112.c linux-libre-4.19.256-gnu1/drivers/hid/hid-cp2112.c
index 6f65f5257236..637a7ce281c6 100644
--- linux-libre-4.19.255-gnu1/drivers/hid/hid-cp2112.c
+++ linux-libre-4.19.256-gnu1/drivers/hid/hid-cp2112.c
@@ -794,6 +794,11 @@ static int cp2112_xfer(struct i2c_adapter *adap, u16 addr,
 		data->word = le16_to_cpup((__le16 *)buf);
 		break;
 	case I2C_SMBUS_I2C_BLOCK_DATA:
+		if (read_length > I2C_SMBUS_BLOCK_MAX) {
+			ret = -EINVAL;
+			goto power_normal;
+		}
+
 		memcpy(data->block + 1, buf, read_length);
 		break;
 	case I2C_SMBUS_BLOCK_DATA:
diff --git linux-libre-4.19.255-gnu1/drivers/hid/wacom_sys.c linux-libre-4.19.256-gnu1/drivers/hid/wacom_sys.c
index 152570b49f3b..fb63845e9920 100644
--- linux-libre-4.19.255-gnu1/drivers/hid/wacom_sys.c
+++ linux-libre-4.19.256-gnu1/drivers/hid/wacom_sys.c
@@ -2095,7 +2095,7 @@ static int wacom_register_inputs(struct wacom *wacom)
 
 	error = wacom_setup_pad_input_capabilities(pad_input_dev, wacom_wac);
 	if (error) {
-		/* no pad in use on this interface */
+		/* no pad events using this interface */
 		input_free_device(pad_input_dev);
 		wacom_wac->pad_input = NULL;
 		pad_input_dev = NULL;
diff --git linux-libre-4.19.255-gnu1/drivers/hid/wacom_wac.c linux-libre-4.19.256-gnu1/drivers/hid/wacom_wac.c
index 254afea67cf3..826c02a11133 100644
--- linux-libre-4.19.255-gnu1/drivers/hid/wacom_wac.c
+++ linux-libre-4.19.256-gnu1/drivers/hid/wacom_wac.c
@@ -1954,7 +1954,6 @@ static void wacom_wac_pad_usage_mapping(struct hid_device *hdev,
 		wacom_wac->has_mute_touch_switch = true;
 		usage->type = EV_SW;
 		usage->code = SW_MUTE_DEVICE;
-		features->device_type |= WACOM_DEVICETYPE_PAD;
 		break;
 	case WACOM_HID_WD_TOUCHSTRIP:
 		wacom_map_usage(input, usage, field, EV_ABS, ABS_RX, 0);
@@ -2034,6 +2033,30 @@ static void wacom_wac_pad_event(struct hid_device *hdev, struct hid_field *field
 			wacom_wac->hid_data.inrange_state |= value;
 	}
 
+	/* Process touch switch state first since it is reported through touch interface,
+	 * which is indepentent of pad interface. In the case when there are no other pad
+	 * events, the pad interface will not even be created.
+	 */
+	if ((equivalent_usage == WACOM_HID_WD_MUTE_DEVICE) ||
+	   (equivalent_usage == WACOM_HID_WD_TOUCHONOFF)) {
+		if (wacom_wac->shared->touch_input) {
+			bool *is_touch_on = &wacom_wac->shared->is_touch_on;
+
+			if (equivalent_usage == WACOM_HID_WD_MUTE_DEVICE && value)
+				*is_touch_on = !(*is_touch_on);
+			else if (equivalent_usage == WACOM_HID_WD_TOUCHONOFF)
+				*is_touch_on = value;
+
+			input_report_switch(wacom_wac->shared->touch_input,
+					    SW_MUTE_DEVICE, !(*is_touch_on));
+			input_sync(wacom_wac->shared->touch_input);
+		}
+		return;
+	}
+
+	if (!input)
+		return;
+
 	switch (equivalent_usage) {
 	case WACOM_HID_WD_TOUCHRING:
 		/*
@@ -2063,22 +2086,6 @@ static void wacom_wac_pad_event(struct hid_device *hdev, struct hid_field *field
 			input_event(input, usage->type, usage->code, 0);
 		break;
 
-	case WACOM_HID_WD_MUTE_DEVICE:
-	case WACOM_HID_WD_TOUCHONOFF:
-		if (wacom_wac->shared->touch_input) {
-			bool *is_touch_on = &wacom_wac->shared->is_touch_on;
-
-			if (equivalent_usage == WACOM_HID_WD_MUTE_DEVICE && value)
-				*is_touch_on = !(*is_touch_on);
-			else if (equivalent_usage == WACOM_HID_WD_TOUCHONOFF)
-				*is_touch_on = value;
-
-			input_report_switch(wacom_wac->shared->touch_input,
-					    SW_MUTE_DEVICE, !(*is_touch_on));
-			input_sync(wacom_wac->shared->touch_input);
-		}
-		break;
-
 	case WACOM_HID_WD_MODE_CHANGE:
 		if (wacom_wac->is_direct_mode != value) {
 			wacom_wac->is_direct_mode = value;
@@ -2719,7 +2726,7 @@ void wacom_wac_event(struct hid_device *hdev, struct hid_field *field,
 	/* usage tests must precede field tests */
 	if (WACOM_BATTERY_USAGE(usage))
 		wacom_wac_battery_event(hdev, field, usage, value);
-	else if (WACOM_PAD_FIELD(field) && wacom->wacom_wac.pad_input)
+	else if (WACOM_PAD_FIELD(field))
 		wacom_wac_pad_event(hdev, field, usage, value);
 	else if (WACOM_PEN_FIELD(field) && wacom->wacom_wac.pen_input)
 		wacom_wac_pen_event(hdev, field, usage, value);
diff --git linux-libre-4.19.255-gnu1/drivers/hwtracing/intel_th/pci.c linux-libre-4.19.256-gnu1/drivers/hwtracing/intel_th/pci.c
index 83fab06ccfeb..6229f8e497fc 100644
--- linux-libre-4.19.255-gnu1/drivers/hwtracing/intel_th/pci.c
+++ linux-libre-4.19.256-gnu1/drivers/hwtracing/intel_th/pci.c
@@ -245,6 +245,21 @@ static const struct pci_device_id intel_th_pci_id_table[] = {
 		PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x54a6),
 		.driver_data = (kernel_ulong_t)&intel_th_2x,
 	},
+	{
+		/* Raptor Lake-S CPU */
+		PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa76f),
+		.driver_data = (kernel_ulong_t)&intel_th_2x,
+	},
+	{
+		/* Raptor Lake-S */
+		PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x7a26),
+		.driver_data = (kernel_ulong_t)&intel_th_2x,
+	},
+	{
+		/* Meteor Lake-P */
+		PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x7e24),
+		.driver_data = (kernel_ulong_t)&intel_th_2x,
+	},
 	{
 		/* Rocket Lake CPU */
 		PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x4c19),
diff --git linux-libre-4.19.255-gnu1/drivers/i2c/busses/i2c-cadence.c linux-libre-4.19.256-gnu1/drivers/i2c/busses/i2c-cadence.c
index 512c61d31fe5..bce7bf93d62a 100644
--- linux-libre-4.19.255-gnu1/drivers/i2c/busses/i2c-cadence.c
+++ linux-libre-4.19.256-gnu1/drivers/i2c/busses/i2c-cadence.c
@@ -353,8 +353,13 @@ static void cdns_i2c_mrecv(struct cdns_i2c *id)
 	ctrl_reg = cdns_i2c_readreg(CDNS_I2C_CR_OFFSET);
 	ctrl_reg |= CDNS_I2C_CR_RW | CDNS_I2C_CR_CLR_FIFO;
 
+	/*
+	 * Receive up to I2C_SMBUS_BLOCK_MAX data bytes, plus one message length
+	 * byte, plus one checksum byte if PEC is enabled. p_msg->len will be 2 if
+	 * PEC is enabled, otherwise 1.
+	 */
 	if (id->p_msg->flags & I2C_M_RECV_LEN)
-		id->recv_count = I2C_SMBUS_BLOCK_MAX + 1;
+		id->recv_count = I2C_SMBUS_BLOCK_MAX + id->p_msg->len;
 
 	id->curr_recv_count = id->recv_count;
 
@@ -540,6 +545,9 @@ static int cdns_i2c_process_msg(struct cdns_i2c *id, struct i2c_msg *msg,
 	if (id->err_status & CDNS_I2C_IXR_ARB_LOST)
 		return -EAGAIN;
 
+	if (msg->flags & I2C_M_RECV_LEN)
+		msg->len += min_t(unsigned int, msg->buf[0], I2C_SMBUS_BLOCK_MAX);
+
 	return 0;
 }
 
diff --git linux-libre-4.19.255-gnu1/drivers/i2c/i2c-core-base.c linux-libre-4.19.256-gnu1/drivers/i2c/i2c-core-base.c
index 2a43f4e46af0..9079be0d51d1 100644
--- linux-libre-4.19.255-gnu1/drivers/i2c/i2c-core-base.c
+++ linux-libre-4.19.256-gnu1/drivers/i2c/i2c-core-base.c
@@ -2273,8 +2273,9 @@ void i2c_put_adapter(struct i2c_adapter *adap)
 	if (!adap)
 		return;
 
-	put_device(&adap->dev);
 	module_put(adap->owner);
+	/* Should be last, otherwise we risk use-after-free with 'adap' */
+	put_device(&adap->dev);
 }
 EXPORT_SYMBOL(i2c_put_adapter);
 
diff --git linux-libre-4.19.255-gnu1/drivers/i2c/muxes/i2c-mux-gpmux.c linux-libre-4.19.256-gnu1/drivers/i2c/muxes/i2c-mux-gpmux.c
index 92cf5f48afe6..5053f1675a29 100644
--- linux-libre-4.19.255-gnu1/drivers/i2c/muxes/i2c-mux-gpmux.c
+++ linux-libre-4.19.256-gnu1/drivers/i2c/muxes/i2c-mux-gpmux.c
@@ -141,6 +141,7 @@ static int i2c_mux_probe(struct platform_device *pdev)
 	return 0;
 
 err_children:
+	of_node_put(child);
 	i2c_mux_del_adapters(muxc);
 err_parent:
 	i2c_put_adapter(parent);
diff --git linux-libre-4.19.255-gnu1/drivers/iio/light/isl29028.c linux-libre-4.19.256-gnu1/drivers/iio/light/isl29028.c
index f9912ab4f65c..4c2810c2a4bf 100644
--- linux-libre-4.19.255-gnu1/drivers/iio/light/isl29028.c
+++ linux-libre-4.19.256-gnu1/drivers/iio/light/isl29028.c
@@ -639,7 +639,7 @@ static int isl29028_probe(struct i2c_client *client,
 					 ISL29028_POWER_OFF_DELAY_MS);
 	pm_runtime_use_autosuspend(&client->dev);
 
-	ret = devm_iio_device_register(indio_dev->dev.parent, indio_dev);
+	ret = iio_device_register(indio_dev);
 	if (ret < 0) {
 		dev_err(&client->dev,
 			"%s(): iio registration failed with error %d\n",
diff --git linux-libre-4.19.255-gnu1/drivers/infiniband/hw/hfi1/file_ops.c linux-libre-4.19.256-gnu1/drivers/infiniband/hw/hfi1/file_ops.c
index 64ee11542a56..be31faf6cc62 100644
--- linux-libre-4.19.255-gnu1/drivers/infiniband/hw/hfi1/file_ops.c
+++ linux-libre-4.19.256-gnu1/drivers/infiniband/hw/hfi1/file_ops.c
@@ -1222,8 +1222,10 @@ static int setup_base_ctxt(struct hfi1_filedata *fd,
 		goto done;
 
 	ret = init_user_ctxt(fd, uctxt);
-	if (ret)
+	if (ret) {
+		hfi1_free_ctxt_rcv_groups(uctxt);
 		goto done;
+	}
 
 	user_init(uctxt);
 
diff --git linux-libre-4.19.255-gnu1/drivers/infiniband/sw/rxe/rxe_qp.c linux-libre-4.19.256-gnu1/drivers/infiniband/sw/rxe/rxe_qp.c
index 4798b718b085..a4b5374deac8 100644
--- linux-libre-4.19.255-gnu1/drivers/infiniband/sw/rxe/rxe_qp.c
+++ linux-libre-4.19.256-gnu1/drivers/infiniband/sw/rxe/rxe_qp.c
@@ -210,6 +210,14 @@ static void rxe_qp_init_misc(struct rxe_dev *rxe, struct rxe_qp *qp,
 	spin_lock_init(&qp->grp_lock);
 	spin_lock_init(&qp->state_lock);
 
+	spin_lock_init(&qp->req.task.state_lock);
+	spin_lock_init(&qp->resp.task.state_lock);
+	spin_lock_init(&qp->comp.task.state_lock);
+
+	spin_lock_init(&qp->sq.sq_lock);
+	spin_lock_init(&qp->rq.producer_lock);
+	spin_lock_init(&qp->rq.consumer_lock);
+
 	atomic_set(&qp->ssn, 0);
 	atomic_set(&qp->skb_out, 0);
 }
@@ -258,7 +266,6 @@ static int rxe_qp_init_req(struct rxe_dev *rxe, struct rxe_qp *qp,
 	qp->req.opcode		= -1;
 	qp->comp.opcode		= -1;
 
-	spin_lock_init(&qp->sq.sq_lock);
 	skb_queue_head_init(&qp->req_pkts);
 
 	rxe_init_task(rxe, &qp->req.task, qp,
@@ -308,9 +315,6 @@ static int rxe_qp_init_resp(struct rxe_dev *rxe, struct rxe_qp *qp,
 		}
 	}
 
-	spin_lock_init(&qp->rq.producer_lock);
-	spin_lock_init(&qp->rq.consumer_lock);
-
 	skb_queue_head_init(&qp->resp_pkts);
 
 	rxe_init_task(rxe, &qp->resp.task, qp,
diff --git linux-libre-4.19.255-gnu1/drivers/iommu/exynos-iommu.c linux-libre-4.19.256-gnu1/drivers/iommu/exynos-iommu.c
index 4bf6049dd2c7..8626c924f724 100644
--- linux-libre-4.19.255-gnu1/drivers/iommu/exynos-iommu.c
+++ linux-libre-4.19.256-gnu1/drivers/iommu/exynos-iommu.c
@@ -640,7 +640,7 @@ static int __init exynos_sysmmu_probe(struct platform_device *pdev)
 
 	ret = iommu_device_register(&data->iommu);
 	if (ret)
-		return ret;
+		goto err_iommu_register;
 
 	platform_set_drvdata(pdev, data);
 
@@ -667,6 +667,10 @@ static int __init exynos_sysmmu_probe(struct platform_device *pdev)
 	pm_runtime_enable(dev);
 
 	return 0;
+
+err_iommu_register:
+	iommu_device_sysfs_remove(&data->iommu);
+	return ret;
 }
 
 static int __maybe_unused exynos_sysmmu_suspend(struct device *dev)
diff --git linux-libre-4.19.255-gnu1/drivers/iommu/qcom_iommu.c linux-libre-4.19.256-gnu1/drivers/iommu/qcom_iommu.c
index b0a4a3d2f60e..244e2f7eae84 100644
--- linux-libre-4.19.255-gnu1/drivers/iommu/qcom_iommu.c
+++ linux-libre-4.19.256-gnu1/drivers/iommu/qcom_iommu.c
@@ -767,9 +767,12 @@ static bool qcom_iommu_has_secure_context(struct qcom_iommu_dev *qcom_iommu)
 {
 	struct device_node *child;
 
-	for_each_child_of_node(qcom_iommu->dev->of_node, child)
-		if (of_device_is_compatible(child, "qcom,msm-iommu-v1-sec"))
+	for_each_child_of_node(qcom_iommu->dev->of_node, child) {
+		if (of_device_is_compatible(child, "qcom,msm-iommu-v1-sec")) {
+			of_node_put(child);
 			return true;
+		}
+	}
 
 	return false;
 }
diff --git linux-libre-4.19.255-gnu1/drivers/irqchip/irq-tegra.c linux-libre-4.19.256-gnu1/drivers/irqchip/irq-tegra.c
index 0abc0cd1c32e..1b3048ecb600 100644
--- linux-libre-4.19.255-gnu1/drivers/irqchip/irq-tegra.c
+++ linux-libre-4.19.256-gnu1/drivers/irqchip/irq-tegra.c
@@ -157,10 +157,10 @@ static int tegra_ictlr_suspend(void)
 		lic->cop_iep[i] = readl_relaxed(ictlr + ICTLR_COP_IEP_CLASS);
 
 		/* Disable COP interrupts */
-		writel_relaxed(~0ul, ictlr + ICTLR_COP_IER_CLR);
+		writel_relaxed(GENMASK(31, 0), ictlr + ICTLR_COP_IER_CLR);
 
 		/* Disable CPU interrupts */
-		writel_relaxed(~0ul, ictlr + ICTLR_CPU_IER_CLR);
+		writel_relaxed(GENMASK(31, 0), ictlr + ICTLR_CPU_IER_CLR);
 
 		/* Enable the wakeup sources of ictlr */
 		writel_relaxed(lic->ictlr_wake_mask[i], ictlr + ICTLR_CPU_IER_SET);
@@ -181,12 +181,12 @@ static void tegra_ictlr_resume(void)
 
 		writel_relaxed(lic->cpu_iep[i],
 			       ictlr + ICTLR_CPU_IEP_CLASS);
-		writel_relaxed(~0ul, ictlr + ICTLR_CPU_IER_CLR);
+		writel_relaxed(GENMASK(31, 0), ictlr + ICTLR_CPU_IER_CLR);
 		writel_relaxed(lic->cpu_ier[i],
 			       ictlr + ICTLR_CPU_IER_SET);
 		writel_relaxed(lic->cop_iep[i],
 			       ictlr + ICTLR_COP_IEP_CLASS);
-		writel_relaxed(~0ul, ictlr + ICTLR_COP_IER_CLR);
+		writel_relaxed(GENMASK(31, 0), ictlr + ICTLR_COP_IER_CLR);
 		writel_relaxed(lic->cop_ier[i],
 			       ictlr + ICTLR_COP_IER_SET);
 	}
@@ -321,7 +321,7 @@ static int __init tegra_ictlr_init(struct device_node *node,
 		lic->base[i] = base;
 
 		/* Disable all interrupts */
-		writel_relaxed(~0UL, base + ICTLR_CPU_IER_CLR);
+		writel_relaxed(GENMASK(31, 0), base + ICTLR_CPU_IER_CLR);
 		/* All interrupts target IRQ */
 		writel_relaxed(0, base + ICTLR_CPU_IEP_CLASS);
 
diff --git linux-libre-4.19.255-gnu1/drivers/md/dm-raid.c linux-libre-4.19.256-gnu1/drivers/md/dm-raid.c
index dd56536ab728..5c45100f6d53 100644
--- linux-libre-4.19.255-gnu1/drivers/md/dm-raid.c
+++ linux-libre-4.19.256-gnu1/drivers/md/dm-raid.c
@@ -3533,7 +3533,7 @@ static void raid_status(struct dm_target *ti, status_type_t type,
 {
 	struct raid_set *rs = ti->private;
 	struct mddev *mddev = &rs->md;
-	struct r5conf *conf = mddev->private;
+	struct r5conf *conf = rs_is_raid456(rs) ? mddev->private : NULL;
 	int i, max_nr_stripes = conf ? conf->max_nr_stripes : 0;
 	unsigned long recovery;
 	unsigned int raid_param_cnt = 1; /* at least 1 for chunksize */
@@ -3804,7 +3804,7 @@ static void attempt_restore_of_faulty_devices(struct raid_set *rs)
 
 	memset(cleared_failed_devices, 0, sizeof(cleared_failed_devices));
 
-	for (i = 0; i < mddev->raid_disks; i++) {
+	for (i = 0; i < rs->raid_disks; i++) {
 		r = &rs->dev[i].rdev;
 		/* HM FIXME: enhance journal device recovery processing */
 		if (test_bit(Journal, &r->flags))
diff --git linux-libre-4.19.255-gnu1/drivers/md/dm-writecache.c linux-libre-4.19.256-gnu1/drivers/md/dm-writecache.c
index 3ca8627c2f1d..af5af0b78022 100644
--- linux-libre-4.19.255-gnu1/drivers/md/dm-writecache.c
+++ linux-libre-4.19.256-gnu1/drivers/md/dm-writecache.c
@@ -20,7 +20,7 @@
 
 #define HIGH_WATERMARK			50
 #define LOW_WATERMARK			45
-#define MAX_WRITEBACK_JOBS		0
+#define MAX_WRITEBACK_JOBS		min(0x10000000 / PAGE_SIZE, totalram_pages / 16)
 #define ENDIO_LATENCY			16
 #define WRITEBACK_LATENCY		64
 #define AUTOCOMMIT_BLOCKS_SSD		65536
diff --git linux-libre-4.19.255-gnu1/drivers/md/dm.c linux-libre-4.19.256-gnu1/drivers/md/dm.c
index d2ee97cd7d14..324d1dd58e2b 100644
--- linux-libre-4.19.255-gnu1/drivers/md/dm.c
+++ linux-libre-4.19.256-gnu1/drivers/md/dm.c
@@ -3122,6 +3122,11 @@ static int dm_call_pr(struct block_device *bdev, iterate_devices_callout_fn fn,
 		goto out;
 	ti = dm_table_get_target(table, 0);
 
+	if (dm_suspended_md(md)) {
+		ret = -EAGAIN;
+		goto out;
+	}
+
 	ret = -EINVAL;
 	if (!ti->type->iterate_devices)
 		goto out;
diff --git linux-libre-4.19.255-gnu1/drivers/md/raid10.c linux-libre-4.19.256-gnu1/drivers/md/raid10.c
index 8e0f936b3e37..9f9cd2fadc1e 100644
--- linux-libre-4.19.255-gnu1/drivers/md/raid10.c
+++ linux-libre-4.19.256-gnu1/drivers/md/raid10.c
@@ -1863,9 +1863,12 @@ static int raid10_remove_disk(struct mddev *mddev, struct md_rdev *rdev)
 	int err = 0;
 	int number = rdev->raid_disk;
 	struct md_rdev **rdevp;
-	struct raid10_info *p = conf->mirrors + number;
+	struct raid10_info *p;
 
 	print_conf(conf);
+	if (unlikely(number >= mddev->raid_disks))
+		return 0;
+	p = conf->mirrors + number;
 	if (rdev == p->rdev)
 		rdevp = &p->rdev;
 	else if (rdev == p->replacement)
diff --git linux-libre-4.19.255-gnu1/drivers/md/raid5.c linux-libre-4.19.256-gnu1/drivers/md/raid5.c
index dad426cc0f90..6f04473f0838 100644
--- linux-libre-4.19.255-gnu1/drivers/md/raid5.c
+++ linux-libre-4.19.256-gnu1/drivers/md/raid5.c
@@ -2670,10 +2670,10 @@ static void raid5_end_write_request(struct bio *bi)
 	if (!test_and_clear_bit(R5_DOUBLE_LOCKED, &sh->dev[i].flags))
 		clear_bit(R5_LOCKED, &sh->dev[i].flags);
 	set_bit(STRIPE_HANDLE, &sh->state);
-	raid5_release_stripe(sh);
 
 	if (sh->batch_head && sh != sh->batch_head)
 		raid5_release_stripe(sh->batch_head);
+	raid5_release_stripe(sh);
 }
 
 static void raid5_error(struct mddev *mddev, struct md_rdev *rdev)
diff --git linux-libre-4.19.255-gnu1/drivers/media/pci/tw686x/tw686x-core.c linux-libre-4.19.256-gnu1/drivers/media/pci/tw686x/tw686x-core.c
index 7fb3f07bf022..8e759728ef22 100644
--- linux-libre-4.19.255-gnu1/drivers/media/pci/tw686x/tw686x-core.c
+++ linux-libre-4.19.256-gnu1/drivers/media/pci/tw686x/tw686x-core.c
@@ -318,13 +318,6 @@ static int tw686x_probe(struct pci_dev *pci_dev,
 
 	spin_lock_init(&dev->lock);
 
-	err = request_irq(pci_dev->irq, tw686x_irq, IRQF_SHARED,
-			  dev->name, dev);
-	if (err < 0) {
-		dev_err(&pci_dev->dev, "unable to request interrupt\n");
-		goto iounmap;
-	}
-
 	timer_setup(&dev->dma_delay_timer, tw686x_dma_delay, 0);
 
 	/*
@@ -336,18 +329,23 @@ static int tw686x_probe(struct pci_dev *pci_dev,
 	err = tw686x_video_init(dev);
 	if (err) {
 		dev_err(&pci_dev->dev, "can't register video\n");
-		goto free_irq;
+		goto iounmap;
 	}
 
 	err = tw686x_audio_init(dev);
 	if (err)
 		dev_warn(&pci_dev->dev, "can't register audio\n");
 
+	err = request_irq(pci_dev->irq, tw686x_irq, IRQF_SHARED,
+			  dev->name, dev);
+	if (err < 0) {
+		dev_err(&pci_dev->dev, "unable to request interrupt\n");
+		goto iounmap;
+	}
+
 	pci_set_drvdata(pci_dev, dev);
 	return 0;
 
-free_irq:
-	free_irq(pci_dev->irq, dev);
 iounmap:
 	pci_iounmap(pci_dev, dev->mmio);
 free_region:
diff --git linux-libre-4.19.255-gnu1/drivers/media/platform/mtk-mdp/mtk_mdp_ipi.h linux-libre-4.19.256-gnu1/drivers/media/platform/mtk-mdp/mtk_mdp_ipi.h
index 78e2cc0dead1..4f4a51dd48e1 100644
--- linux-libre-4.19.255-gnu1/drivers/media/platform/mtk-mdp/mtk_mdp_ipi.h
+++ linux-libre-4.19.256-gnu1/drivers/media/platform/mtk-mdp/mtk_mdp_ipi.h
@@ -48,12 +48,14 @@ struct mdp_ipi_init {
  * @ipi_id        : IPI_MDP
  * @ap_inst       : AP mtk_mdp_vpu address
  * @vpu_inst_addr : VPU MDP instance address
+ * @padding       : Alignment padding
  */
 struct mdp_ipi_comm {
 	uint32_t msg_id;
 	uint32_t ipi_id;
 	uint64_t ap_inst;
 	uint32_t vpu_inst_addr;
+	uint32_t padding;
 };
 
 /**
diff --git linux-libre-4.19.255-gnu1/drivers/media/usb/hdpvr/hdpvr-video.c linux-libre-4.19.256-gnu1/drivers/media/usb/hdpvr/hdpvr-video.c
index ce46f8721470..1fb2cdd9c4b2 100644
--- linux-libre-4.19.255-gnu1/drivers/media/usb/hdpvr/hdpvr-video.c
+++ linux-libre-4.19.256-gnu1/drivers/media/usb/hdpvr/hdpvr-video.c
@@ -413,7 +413,7 @@ static ssize_t hdpvr_read(struct file *file, char __user *buffer, size_t count,
 	struct hdpvr_device *dev = video_drvdata(file);
 	struct hdpvr_buffer *buf = NULL;
 	struct urb *urb;
-	unsigned int ret = 0;
+	int ret = 0;
 	int rem, cnt;
 
 	if (*pos)
diff --git linux-libre-4.19.255-gnu1/drivers/memstick/core/ms_block.c linux-libre-4.19.256-gnu1/drivers/memstick/core/ms_block.c
index 7aab26128f6d..addf76a8d1b0 100644
--- linux-libre-4.19.255-gnu1/drivers/memstick/core/ms_block.c
+++ linux-libre-4.19.256-gnu1/drivers/memstick/core/ms_block.c
@@ -1339,17 +1339,17 @@ static int msb_ftl_initialize(struct msb_data *msb)
 	msb->zone_count = msb->block_count / MS_BLOCKS_IN_ZONE;
 	msb->logical_block_count = msb->zone_count * 496 - 2;
 
-	msb->used_blocks_bitmap = kzalloc(msb->block_count / 8, GFP_KERNEL);
-	msb->erased_blocks_bitmap = kzalloc(msb->block_count / 8, GFP_KERNEL);
+	msb->used_blocks_bitmap = bitmap_zalloc(msb->block_count, GFP_KERNEL);
+	msb->erased_blocks_bitmap = bitmap_zalloc(msb->block_count, GFP_KERNEL);
 	msb->lba_to_pba_table =
 		kmalloc_array(msb->logical_block_count, sizeof(u16),
 			      GFP_KERNEL);
 
 	if (!msb->used_blocks_bitmap || !msb->lba_to_pba_table ||
 						!msb->erased_blocks_bitmap) {
-		kfree(msb->used_blocks_bitmap);
+		bitmap_free(msb->used_blocks_bitmap);
+		bitmap_free(msb->erased_blocks_bitmap);
 		kfree(msb->lba_to_pba_table);
-		kfree(msb->erased_blocks_bitmap);
 		return -ENOMEM;
 	}
 
@@ -1961,7 +1961,8 @@ static int msb_bd_open(struct block_device *bdev, fmode_t mode)
 static void msb_data_clear(struct msb_data *msb)
 {
 	kfree(msb->boot_page);
-	kfree(msb->used_blocks_bitmap);
+	bitmap_free(msb->used_blocks_bitmap);
+	bitmap_free(msb->erased_blocks_bitmap);
 	kfree(msb->lba_to_pba_table);
 	kfree(msb->cache);
 	msb->card = NULL;
diff --git linux-libre-4.19.255-gnu1/drivers/mfd/t7l66xb.c linux-libre-4.19.256-gnu1/drivers/mfd/t7l66xb.c
index 43d8683266de..caa61649fe79 100644
--- linux-libre-4.19.255-gnu1/drivers/mfd/t7l66xb.c
+++ linux-libre-4.19.256-gnu1/drivers/mfd/t7l66xb.c
@@ -412,11 +412,8 @@ err_noirq:
 
 static int t7l66xb_remove(struct platform_device *dev)
 {
-	struct t7l66xb_platform_data *pdata = dev_get_platdata(&dev->dev);
 	struct t7l66xb *t7l66xb = platform_get_drvdata(dev);
-	int ret;
 
-	ret = pdata->disable(dev);
 	clk_disable_unprepare(t7l66xb->clk48m);
 	clk_put(t7l66xb->clk48m);
 	clk_disable_unprepare(t7l66xb->clk32k);
@@ -427,8 +424,7 @@ static int t7l66xb_remove(struct platform_device *dev)
 	mfd_remove_devices(&dev->dev);
 	kfree(t7l66xb);
 
-	return ret;
-
+	return 0;
 }
 
 static struct platform_driver t7l66xb_platform_driver = {
diff --git linux-libre-4.19.255-gnu1/drivers/misc/cardreader/rtsx_pcr.c linux-libre-4.19.256-gnu1/drivers/misc/cardreader/rtsx_pcr.c
index 3eb3c237f339..80b9f36dbca4 100644
--- linux-libre-4.19.255-gnu1/drivers/misc/cardreader/rtsx_pcr.c
+++ linux-libre-4.19.256-gnu1/drivers/misc/cardreader/rtsx_pcr.c
@@ -1479,7 +1479,7 @@ static int rtsx_pci_probe(struct pci_dev *pcidev,
 	pcr->remap_addr = ioremap_nocache(base, len);
 	if (!pcr->remap_addr) {
 		ret = -ENOMEM;
-		goto free_handle;
+		goto free_idr;
 	}
 
 	pcr->rtsx_resv_buf = dma_alloc_coherent(&(pcidev->dev),
@@ -1541,6 +1541,10 @@ disable_msi:
 			pcr->rtsx_resv_buf, pcr->rtsx_resv_buf_addr);
 unmap:
 	iounmap(pcr->remap_addr);
+free_idr:
+	spin_lock(&rtsx_pci_lock);
+	idr_remove(&rtsx_pci_idr, pcr->id);
+	spin_unlock(&rtsx_pci_lock);
 free_handle:
 	kfree(handle);
 free_pcr:
diff --git linux-libre-4.19.255-gnu1/drivers/misc/cxl/irq.c linux-libre-4.19.256-gnu1/drivers/misc/cxl/irq.c
index ce08a9f22308..0dbe78383f8f 100644
--- linux-libre-4.19.255-gnu1/drivers/misc/cxl/irq.c
+++ linux-libre-4.19.256-gnu1/drivers/misc/cxl/irq.c
@@ -353,6 +353,7 @@ int afu_allocate_irqs(struct cxl_context *ctx, u32 count)
 
 out:
 	cxl_ops->release_irq_ranges(&ctx->irqs, ctx->afu->adapter);
+	bitmap_free(ctx->irq_bitmap);
 	afu_irq_name_free(ctx);
 	return -ENOMEM;
 }
diff --git linux-libre-4.19.255-gnu1/drivers/mmc/host/cavium-octeon.c linux-libre-4.19.256-gnu1/drivers/mmc/host/cavium-octeon.c
index 22aded1065ae..2245452a44c8 100644
--- linux-libre-4.19.255-gnu1/drivers/mmc/host/cavium-octeon.c
+++ linux-libre-4.19.256-gnu1/drivers/mmc/host/cavium-octeon.c
@@ -288,6 +288,7 @@ static int octeon_mmc_probe(struct platform_device *pdev)
 		if (ret) {
 			dev_err(&pdev->dev, "Error populating slots\n");
 			octeon_mmc_set_shared_power(host, 0);
+			of_node_put(cn);
 			goto error;
 		}
 		i++;
diff --git linux-libre-4.19.255-gnu1/drivers/mmc/host/cavium-thunderx.c linux-libre-4.19.256-gnu1/drivers/mmc/host/cavium-thunderx.c
index eee08d81b242..f79806e31e7e 100644
--- linux-libre-4.19.255-gnu1/drivers/mmc/host/cavium-thunderx.c
+++ linux-libre-4.19.256-gnu1/drivers/mmc/host/cavium-thunderx.c
@@ -138,8 +138,10 @@ static int thunder_mmc_probe(struct pci_dev *pdev,
 				continue;
 
 			ret = cvm_mmc_of_slot_probe(&host->slot_pdev[i]->dev, host);
-			if (ret)
+			if (ret) {
+				of_node_put(child_node);
 				goto error;
+			}
 		}
 		i++;
 	}
diff --git linux-libre-4.19.255-gnu1/drivers/mmc/host/pxamci.c linux-libre-4.19.256-gnu1/drivers/mmc/host/pxamci.c
index 00b5465dfb0c..d0db1c37552f 100644
--- linux-libre-4.19.255-gnu1/drivers/mmc/host/pxamci.c
+++ linux-libre-4.19.256-gnu1/drivers/mmc/host/pxamci.c
@@ -653,7 +653,7 @@ static int pxamci_probe(struct platform_device *pdev)
 
 	ret = pxamci_of_init(pdev, mmc);
 	if (ret)
-		return ret;
+		goto out;
 
 	host = mmc_priv(mmc);
 	host->mmc = mmc;
@@ -677,7 +677,7 @@ static int pxamci_probe(struct platform_device *pdev)
 
 	ret = pxamci_init_ocr(host);
 	if (ret < 0)
-		return ret;
+		goto out;
 
 	mmc->caps = 0;
 	host->cmdat = 0;
diff --git linux-libre-4.19.255-gnu1/drivers/mmc/host/sdhci-of-at91.c linux-libre-4.19.256-gnu1/drivers/mmc/host/sdhci-of-at91.c
index 8cd1794768ba..70ce977cfeec 100644
--- linux-libre-4.19.255-gnu1/drivers/mmc/host/sdhci-of-at91.c
+++ linux-libre-4.19.256-gnu1/drivers/mmc/host/sdhci-of-at91.c
@@ -117,8 +117,13 @@ static void sdhci_at91_set_power(struct sdhci_host *host, unsigned char mode,
 static void sdhci_at91_set_uhs_signaling(struct sdhci_host *host,
 					 unsigned int timing)
 {
-	if (timing == MMC_TIMING_MMC_DDR52)
-		sdhci_writeb(host, SDMMC_MC1R_DDR, SDMMC_MC1R);
+	u8 mc1r;
+
+	if (timing == MMC_TIMING_MMC_DDR52) {
+		mc1r = sdhci_readb(host, SDMMC_MC1R);
+		mc1r |= SDMMC_MC1R_DDR;
+		sdhci_writeb(host, mc1r, SDMMC_MC1R);
+	}
 	sdhci_set_uhs_signaling(host, timing);
 }
 
diff --git linux-libre-4.19.255-gnu1/drivers/mmc/host/sdhci-of-esdhc.c linux-libre-4.19.256-gnu1/drivers/mmc/host/sdhci-of-esdhc.c
index d6cb0f9a3488..77ae23077f56 100644
--- linux-libre-4.19.255-gnu1/drivers/mmc/host/sdhci-of-esdhc.c
+++ linux-libre-4.19.256-gnu1/drivers/mmc/host/sdhci-of-esdhc.c
@@ -704,6 +704,7 @@ static int esdhc_signal_voltage_switch(struct mmc_host *mmc,
 		scfg_node = of_find_matching_node(NULL, scfg_device_ids);
 		if (scfg_node)
 			scfg_base = of_iomap(scfg_node, 0);
+		of_node_put(scfg_node);
 		if (scfg_base) {
 			sdhciovselcr = SDHCIOVSELCR_TGLEN |
 				       SDHCIOVSELCR_VSELVAL;
diff --git linux-libre-4.19.255-gnu1/drivers/mtd/devices/st_spi_fsm.c linux-libre-4.19.256-gnu1/drivers/mtd/devices/st_spi_fsm.c
index 55d4a77f3b7f..533096c88ae1 100644
--- linux-libre-4.19.255-gnu1/drivers/mtd/devices/st_spi_fsm.c
+++ linux-libre-4.19.256-gnu1/drivers/mtd/devices/st_spi_fsm.c
@@ -2120,10 +2120,12 @@ static int stfsm_probe(struct platform_device *pdev)
 		(long long)fsm->mtd.size, (long long)(fsm->mtd.size >> 20),
 		fsm->mtd.erasesize, (fsm->mtd.erasesize >> 10));
 
-	return mtd_device_register(&fsm->mtd, NULL, 0);
-
+	ret = mtd_device_register(&fsm->mtd, NULL, 0);
+	if (ret) {
 err_clk_unprepare:
-	clk_disable_unprepare(fsm->clk);
+		clk_disable_unprepare(fsm->clk);
+	}
+
 	return ret;
 }
 
diff --git linux-libre-4.19.255-gnu1/drivers/mtd/maps/physmap_of_versatile.c linux-libre-4.19.256-gnu1/drivers/mtd/maps/physmap_of_versatile.c
index 03f2b6e7bc7e..7d56e97bd50f 100644
--- linux-libre-4.19.255-gnu1/drivers/mtd/maps/physmap_of_versatile.c
+++ linux-libre-4.19.256-gnu1/drivers/mtd/maps/physmap_of_versatile.c
@@ -107,6 +107,7 @@ static int ap_flash_init(struct platform_device *pdev)
 		return -ENODEV;
 	}
 	ebi_base = of_iomap(ebi, 0);
+	of_node_put(ebi);
 	if (!ebi_base)
 		return -ENODEV;
 
@@ -221,6 +222,7 @@ int of_flash_probe_versatile(struct platform_device *pdev,
 
 		versatile_flashprot = (enum versatile_flashprot)devid->data;
 		rmap = syscon_node_to_regmap(sysnp);
+		of_node_put(sysnp);
 		if (IS_ERR(rmap))
 			return PTR_ERR(rmap);
 
diff --git linux-libre-4.19.255-gnu1/drivers/mtd/sm_ftl.c linux-libre-4.19.256-gnu1/drivers/mtd/sm_ftl.c
index f3bd86e13603..e57f7ba054bc 100644
--- linux-libre-4.19.255-gnu1/drivers/mtd/sm_ftl.c
+++ linux-libre-4.19.256-gnu1/drivers/mtd/sm_ftl.c
@@ -1091,9 +1091,9 @@ static void sm_release(struct mtd_blktrans_dev *dev)
 {
 	struct sm_ftl *ftl = dev->priv;
 
-	mutex_lock(&ftl->mutex);
 	del_timer_sync(&ftl->timer);
 	cancel_work_sync(&ftl->flush_work);
+	mutex_lock(&ftl->mutex);
 	sm_cache_flush(ftl);
 	mutex_unlock(&ftl->mutex);
 }
diff --git linux-libre-4.19.255-gnu1/drivers/net/can/pch_can.c linux-libre-4.19.256-gnu1/drivers/net/can/pch_can.c
index ced11ea89269..25def028a1dc 100644
--- linux-libre-4.19.255-gnu1/drivers/net/can/pch_can.c
+++ linux-libre-4.19.256-gnu1/drivers/net/can/pch_can.c
@@ -500,6 +500,7 @@ static void pch_can_error(struct net_device *ndev, u32 status)
 	if (!skb)
 		return;
 
+	errc = ioread32(&priv->regs->errc);
 	if (status & PCH_BUS_OFF) {
 		pch_can_set_tx_all(priv, 0);
 		pch_can_set_rx_all(priv, 0);
@@ -507,9 +508,11 @@ static void pch_can_error(struct net_device *ndev, u32 status)
 		cf->can_id |= CAN_ERR_BUSOFF;
 		priv->can.can_stats.bus_off++;
 		can_bus_off(ndev);
+	} else {
+		cf->data[6] = errc & PCH_TEC;
+		cf->data[7] = (errc & PCH_REC) >> 8;
 	}
 
-	errc = ioread32(&priv->regs->errc);
 	/* Warning interrupt. */
 	if (status & PCH_EWARN) {
 		state = CAN_STATE_ERROR_WARNING;
@@ -567,9 +570,6 @@ static void pch_can_error(struct net_device *ndev, u32 status)
 		break;
 	}
 
-	cf->data[6] = errc & PCH_TEC;
-	cf->data[7] = (errc & PCH_REC) >> 8;
-
 	priv->can.state = state;
 	netif_receive_skb(skb);
 
diff --git linux-libre-4.19.255-gnu1/drivers/net/can/rcar/rcar_can.c linux-libre-4.19.256-gnu1/drivers/net/can/rcar/rcar_can.c
index 963da8eda168..0156c18d5a2d 100644
--- linux-libre-4.19.255-gnu1/drivers/net/can/rcar/rcar_can.c
+++ linux-libre-4.19.256-gnu1/drivers/net/can/rcar/rcar_can.c
@@ -233,11 +233,8 @@ static void rcar_can_error(struct net_device *ndev)
 	if (eifr & (RCAR_CAN_EIFR_EWIF | RCAR_CAN_EIFR_EPIF)) {
 		txerr = readb(&priv->regs->tecr);
 		rxerr = readb(&priv->regs->recr);
-		if (skb) {
+		if (skb)
 			cf->can_id |= CAN_ERR_CRTL;
-			cf->data[6] = txerr;
-			cf->data[7] = rxerr;
-		}
 	}
 	if (eifr & RCAR_CAN_EIFR_BEIF) {
 		int rx_errors = 0, tx_errors = 0;
@@ -337,6 +334,9 @@ static void rcar_can_error(struct net_device *ndev)
 		can_bus_off(ndev);
 		if (skb)
 			cf->can_id |= CAN_ERR_BUSOFF;
+	} else if (skb) {
+		cf->data[6] = txerr;
+		cf->data[7] = rxerr;
 	}
 	if (eifr & RCAR_CAN_EIFR_ORIF) {
 		netdev_dbg(priv->ndev, "Receive overrun error interrupt\n");
diff --git linux-libre-4.19.255-gnu1/drivers/net/can/sja1000/sja1000.c linux-libre-4.19.256-gnu1/drivers/net/can/sja1000/sja1000.c
index 9f107798f904..e7327ceabb76 100644
--- linux-libre-4.19.255-gnu1/drivers/net/can/sja1000/sja1000.c
+++ linux-libre-4.19.256-gnu1/drivers/net/can/sja1000/sja1000.c
@@ -405,9 +405,6 @@ static int sja1000_err(struct net_device *dev, uint8_t isrc, uint8_t status)
 	txerr = priv->read_reg(priv, SJA1000_TXERR);
 	rxerr = priv->read_reg(priv, SJA1000_RXERR);
 
-	cf->data[6] = txerr;
-	cf->data[7] = rxerr;
-
 	if (isrc & IRQ_DOI) {
 		/* data overrun interrupt */
 		netdev_dbg(dev, "data overrun interrupt\n");
@@ -429,6 +426,10 @@ static int sja1000_err(struct net_device *dev, uint8_t isrc, uint8_t status)
 		else
 			state = CAN_STATE_ERROR_ACTIVE;
 	}
+	if (state != CAN_STATE_BUS_OFF) {
+		cf->data[6] = txerr;
+		cf->data[7] = rxerr;
+	}
 	if (isrc & IRQ_BEI) {
 		/* bus error interrupt */
 		priv->can.can_stats.bus_error++;
diff --git linux-libre-4.19.255-gnu1/drivers/net/can/spi/hi311x.c linux-libre-4.19.256-gnu1/drivers/net/can/spi/hi311x.c
index 472175e37055..5f730f791c27 100644
--- linux-libre-4.19.255-gnu1/drivers/net/can/spi/hi311x.c
+++ linux-libre-4.19.256-gnu1/drivers/net/can/spi/hi311x.c
@@ -688,8 +688,6 @@ static irqreturn_t hi3110_can_ist(int irq, void *dev_id)
 
 			txerr = hi3110_read(spi, HI3110_READ_TEC);
 			rxerr = hi3110_read(spi, HI3110_READ_REC);
-			cf->data[6] = txerr;
-			cf->data[7] = rxerr;
 			tx_state = txerr >= rxerr ? new_state : 0;
 			rx_state = txerr <= rxerr ? new_state : 0;
 			can_change_state(net, cf, tx_state, rx_state);
@@ -702,6 +700,9 @@ static irqreturn_t hi3110_can_ist(int irq, void *dev_id)
 					hi3110_hw_sleep(spi);
 					break;
 				}
+			} else {
+				cf->data[6] = txerr;
+				cf->data[7] = rxerr;
 			}
 		}
 
diff --git linux-libre-4.19.255-gnu1/drivers/net/can/sun4i_can.c linux-libre-4.19.256-gnu1/drivers/net/can/sun4i_can.c
index 093fc9a529f0..bebdd133d9ed 100644
--- linux-libre-4.19.255-gnu1/drivers/net/can/sun4i_can.c
+++ linux-libre-4.19.256-gnu1/drivers/net/can/sun4i_can.c
@@ -525,11 +525,6 @@ static int sun4i_can_err(struct net_device *dev, u8 isrc, u8 status)
 	rxerr = (errc >> 16) & 0xFF;
 	txerr = errc & 0xFF;
 
-	if (skb) {
-		cf->data[6] = txerr;
-		cf->data[7] = rxerr;
-	}
-
 	if (isrc & SUN4I_INT_DATA_OR) {
 		/* data overrun interrupt */
 		netdev_dbg(dev, "data overrun interrupt\n");
@@ -560,6 +555,10 @@ static int sun4i_can_err(struct net_device *dev, u8 isrc, u8 status)
 		else
 			state = CAN_STATE_ERROR_ACTIVE;
 	}
+	if (skb && state != CAN_STATE_BUS_OFF) {
+		cf->data[6] = txerr;
+		cf->data[7] = rxerr;
+	}
 	if (isrc & SUN4I_INT_BUS_ERR) {
 		/* bus error interrupt */
 		netdev_dbg(dev, "bus error interrupt\n");
diff --git linux-libre-4.19.255-gnu1/drivers/net/can/usb/ems_usb.c linux-libre-4.19.256-gnu1/drivers/net/can/usb/ems_usb.c
index 31a070226353..23eba9bab715 100644
--- linux-libre-4.19.255-gnu1/drivers/net/can/usb/ems_usb.c
+++ linux-libre-4.19.256-gnu1/drivers/net/can/usb/ems_usb.c
@@ -206,7 +206,7 @@ struct __packed ems_cpc_msg {
 	__le32 ts_sec;	/* timestamp in seconds */
 	__le32 ts_nsec;	/* timestamp in nano seconds */
 
-	union {
+	union __packed {
 		u8 generic[64];
 		struct cpc_can_msg can_msg;
 		struct cpc_can_params can_params;
diff --git linux-libre-4.19.255-gnu1/drivers/net/can/usb/kvaser_usb/kvaser_usb_hydra.c linux-libre-4.19.256-gnu1/drivers/net/can/usb/kvaser_usb/kvaser_usb_hydra.c
index a7c408acb0c0..01d4a731b579 100644
--- linux-libre-4.19.255-gnu1/drivers/net/can/usb/kvaser_usb/kvaser_usb_hydra.c
+++ linux-libre-4.19.256-gnu1/drivers/net/can/usb/kvaser_usb/kvaser_usb_hydra.c
@@ -890,8 +890,10 @@ static void kvaser_usb_hydra_update_state(struct kvaser_usb_net_priv *priv,
 	    new_state < CAN_STATE_BUS_OFF)
 		priv->can.can_stats.restarts++;
 
-	cf->data[6] = bec->txerr;
-	cf->data[7] = bec->rxerr;
+	if (new_state != CAN_STATE_BUS_OFF) {
+		cf->data[6] = bec->txerr;
+		cf->data[7] = bec->rxerr;
+	}
 
 	stats = &netdev->stats;
 	stats->rx_packets++;
@@ -1045,8 +1047,10 @@ kvaser_usb_hydra_error_frame(struct kvaser_usb_net_priv *priv,
 	shhwtstamps->hwtstamp = hwtstamp;
 
 	cf->can_id |= CAN_ERR_BUSERROR;
-	cf->data[6] = bec.txerr;
-	cf->data[7] = bec.rxerr;
+	if (new_state != CAN_STATE_BUS_OFF) {
+		cf->data[6] = bec.txerr;
+		cf->data[7] = bec.rxerr;
+	}
 
 	stats->rx_packets++;
 	stats->rx_bytes += cf->can_dlc;
diff --git linux-libre-4.19.255-gnu1/drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c linux-libre-4.19.256-gnu1/drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c
index 0e0403dd0550..5e281249ad5f 100644
--- linux-libre-4.19.255-gnu1/drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c
+++ linux-libre-4.19.256-gnu1/drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c
@@ -857,8 +857,10 @@ static void kvaser_usb_leaf_rx_error(const struct kvaser_usb *dev,
 		break;
 	}
 
-	cf->data[6] = es->txerr;
-	cf->data[7] = es->rxerr;
+	if (new_state != CAN_STATE_BUS_OFF) {
+		cf->data[6] = es->txerr;
+		cf->data[7] = es->rxerr;
+	}
 
 	stats->rx_packets++;
 	stats->rx_bytes += cf->can_dlc;
diff --git linux-libre-4.19.255-gnu1/drivers/net/can/usb/usb_8dev.c linux-libre-4.19.256-gnu1/drivers/net/can/usb/usb_8dev.c
index 232f45f722f0..5cb5be4dc941 100644
--- linux-libre-4.19.255-gnu1/drivers/net/can/usb/usb_8dev.c
+++ linux-libre-4.19.256-gnu1/drivers/net/can/usb/usb_8dev.c
@@ -453,9 +453,10 @@ static void usb_8dev_rx_err_msg(struct usb_8dev_priv *priv,
 
 	if (rx_errors)
 		stats->rx_errors++;
-
-	cf->data[6] = txerr;
-	cf->data[7] = rxerr;
+	if (priv->can.state != CAN_STATE_BUS_OFF) {
+		cf->data[6] = txerr;
+		cf->data[7] = rxerr;
+	}
 
 	priv->bec.txerr = txerr;
 	priv->bec.rxerr = rxerr;
diff --git linux-libre-4.19.255-gnu1/drivers/net/ethernet/freescale/fec_ptp.c linux-libre-4.19.256-gnu1/drivers/net/ethernet/freescale/fec_ptp.c
index 52a811f91384..eb11a8e7fcb7 100644
--- linux-libre-4.19.255-gnu1/drivers/net/ethernet/freescale/fec_ptp.c
+++ linux-libre-4.19.256-gnu1/drivers/net/ethernet/freescale/fec_ptp.c
@@ -141,11 +141,7 @@ static int fec_ptp_enable_pps(struct fec_enet_private *fep, uint enable)
 		 * NSEC_PER_SEC - ts.tv_nsec. Add the remaining nanoseconds
 		 * to current timer would be next second.
 		 */
-		tempval = readl(fep->hwp + FEC_ATIME_CTRL);
-		tempval |= FEC_T_CTRL_CAPTURE;
-		writel(tempval, fep->hwp + FEC_ATIME_CTRL);
-
-		tempval = readl(fep->hwp + FEC_ATIME);
+		tempval = fep->cc.read(&fep->cc);
 		/* Convert the ptp local counter to 1588 timestamp */
 		ns = timecounter_cyc2time(&fep->tc, tempval);
 		ts = ns_to_timespec64(ns);
diff --git linux-libre-4.19.255-gnu1/drivers/net/ethernet/intel/i40e/i40e_main.c linux-libre-4.19.256-gnu1/drivers/net/ethernet/intel/i40e/i40e_main.c
index 2f3b393e5506..85337806efc7 100644
--- linux-libre-4.19.255-gnu1/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ linux-libre-4.19.256-gnu1/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -397,7 +397,9 @@ static void i40e_tx_timeout(struct net_device *netdev)
 		set_bit(__I40E_GLOBAL_RESET_REQUESTED, pf->state);
 		break;
 	default:
-		netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
+		netdev_err(netdev, "tx_timeout recovery unsuccessful, device is in non-recoverable state.\n");
+		set_bit(__I40E_DOWN_REQUESTED, pf->state);
+		set_bit(__I40E_VSI_DOWN_REQUESTED, vsi->state);
 		break;
 	}
 
diff --git linux-libre-4.19.255-gnu1/drivers/net/ethernet/intel/igb/igb.h linux-libre-4.19.256-gnu1/drivers/net/ethernet/intel/igb/igb.h
index ca54e268d157..33cbe4f70d59 100644
--- linux-libre-4.19.255-gnu1/drivers/net/ethernet/intel/igb/igb.h
+++ linux-libre-4.19.256-gnu1/drivers/net/ethernet/intel/igb/igb.h
@@ -594,6 +594,8 @@ struct igb_adapter {
 	struct igb_mac_addr *mac_table;
 	struct vf_mac_filter vf_macs;
 	struct vf_mac_filter *vf_mac_list;
+	/* lock for VF resources */
+	spinlock_t vfs_lock;
 };
 
 /* flags controlling PTP/1588 function */
diff --git linux-libre-4.19.255-gnu1/drivers/net/ethernet/intel/igb/igb_main.c linux-libre-4.19.256-gnu1/drivers/net/ethernet/intel/igb/igb_main.c
index 9f45ecd9e8e5..aacfa5fcdc40 100644
--- linux-libre-4.19.255-gnu1/drivers/net/ethernet/intel/igb/igb_main.c
+++ linux-libre-4.19.256-gnu1/drivers/net/ethernet/intel/igb/igb_main.c
@@ -3517,6 +3517,7 @@ static int igb_disable_sriov(struct pci_dev *pdev)
 	struct net_device *netdev = pci_get_drvdata(pdev);
 	struct igb_adapter *adapter = netdev_priv(netdev);
 	struct e1000_hw *hw = &adapter->hw;
+	unsigned long flags;
 
 	/* reclaim resources allocated to VFs */
 	if (adapter->vf_data) {
@@ -3529,12 +3530,13 @@ static int igb_disable_sriov(struct pci_dev *pdev)
 			pci_disable_sriov(pdev);
 			msleep(500);
 		}
-
+		spin_lock_irqsave(&adapter->vfs_lock, flags);
 		kfree(adapter->vf_mac_list);
 		adapter->vf_mac_list = NULL;
 		kfree(adapter->vf_data);
 		adapter->vf_data = NULL;
 		adapter->vfs_allocated_count = 0;
+		spin_unlock_irqrestore(&adapter->vfs_lock, flags);
 		wr32(E1000_IOVCTL, E1000_IOVCTL_REUSE_VFQ);
 		wrfl();
 		msleep(100);
@@ -3694,7 +3696,9 @@ static void igb_remove(struct pci_dev *pdev)
 	igb_release_hw_control(adapter);
 
 #ifdef CONFIG_PCI_IOV
+	rtnl_lock();
 	igb_disable_sriov(pdev);
+	rtnl_unlock();
 #endif
 
 	unregister_netdev(netdev);
@@ -3855,6 +3859,9 @@ static int igb_sw_init(struct igb_adapter *adapter)
 
 	spin_lock_init(&adapter->nfc_lock);
 	spin_lock_init(&adapter->stats64_lock);
+
+	/* init spinlock to avoid concurrency of VF resources */
+	spin_lock_init(&adapter->vfs_lock);
 #ifdef CONFIG_PCI_IOV
 	switch (hw->mac.type) {
 	case e1000_82576:
@@ -7601,8 +7608,10 @@ unlock:
 static void igb_msg_task(struct igb_adapter *adapter)
 {
 	struct e1000_hw *hw = &adapter->hw;
+	unsigned long flags;
 	u32 vf;
 
+	spin_lock_irqsave(&adapter->vfs_lock, flags);
 	for (vf = 0; vf < adapter->vfs_allocated_count; vf++) {
 		/* process any reset requests */
 		if (!igb_check_for_rst(hw, vf))
@@ -7616,6 +7625,7 @@ static void igb_msg_task(struct igb_adapter *adapter)
 		if (!igb_check_for_ack(hw, vf))
 			igb_rcv_ack_from_vf(adapter, vf);
 	}
+	spin_unlock_irqrestore(&adapter->vfs_lock, flags);
 }
 
 /**
diff --git linux-libre-4.19.255-gnu1/drivers/net/ethernet/mellanox/mlx5/core/en.h linux-libre-4.19.256-gnu1/drivers/net/ethernet/mellanox/mlx5/core/en.h
index d79e177f8990..ec303d4d2d7a 100644
--- linux-libre-4.19.255-gnu1/drivers/net/ethernet/mellanox/mlx5/core/en.h
+++ linux-libre-4.19.256-gnu1/drivers/net/ethernet/mellanox/mlx5/core/en.h
@@ -95,7 +95,7 @@ struct page_pool;
 #define MLX5E_LOG_ALIGNED_MPWQE_PPW	(ilog2(MLX5E_REQUIRED_WQE_MTTS))
 #define MLX5E_REQUIRED_MTTS(wqes)	(wqes * MLX5E_REQUIRED_WQE_MTTS)
 #define MLX5E_MAX_RQ_NUM_MTTS	\
-	((1 << 16) * 2) /* So that MLX5_MTT_OCTW(num_mtts) fits into u16 */
+	(ALIGN_DOWN(U16_MAX, 4) * 2) /* So that MLX5_MTT_OCTW(num_mtts) fits into u16 */
 #define MLX5E_ORDER2_MAX_PACKET_MTU (order_base_2(10 * 1024))
 #define MLX5E_PARAMS_MAXIMUM_LOG_RQ_SIZE_MPW	\
 		(ilog2(MLX5E_MAX_RQ_NUM_MTTS / MLX5E_REQUIRED_WQE_MTTS))
diff --git linux-libre-4.19.255-gnu1/drivers/net/geneve.c linux-libre-4.19.256-gnu1/drivers/net/geneve.c
index 8c458c8f57a3..a19e04f8bcc8 100644
--- linux-libre-4.19.255-gnu1/drivers/net/geneve.c
+++ linux-libre-4.19.256-gnu1/drivers/net/geneve.c
@@ -799,8 +799,7 @@ static struct dst_entry *geneve_get_v6_dst(struct sk_buff *skb,
 		use_cache = false;
 	}
 
-	fl6->flowlabel = ip6_make_flowinfo(RT_TOS(prio),
-					   info->key.label);
+	fl6->flowlabel = ip6_make_flowinfo(prio, info->key.label);
 	dst_cache = (struct dst_cache *)&info->dst_cache;
 	if (use_cache) {
 		dst = dst_cache_get_ip6(dst_cache, &fl6->saddr);
diff --git linux-libre-4.19.255-gnu1/drivers/net/netdevsim/bpf.c linux-libre-4.19.256-gnu1/drivers/net/netdevsim/bpf.c
index 12f100392ed1..ca9042ddb6d7 100644
--- linux-libre-4.19.255-gnu1/drivers/net/netdevsim/bpf.c
+++ linux-libre-4.19.256-gnu1/drivers/net/netdevsim/bpf.c
@@ -330,10 +330,12 @@ nsim_map_alloc_elem(struct bpf_offloaded_map *offmap, unsigned int idx)
 {
 	struct nsim_bpf_bound_map *nmap = offmap->dev_priv;
 
-	nmap->entry[idx].key = kmalloc(offmap->map.key_size, GFP_USER);
+	nmap->entry[idx].key = kmalloc(offmap->map.key_size,
+				       GFP_KERNEL_ACCOUNT | __GFP_NOWARN);
 	if (!nmap->entry[idx].key)
 		return -ENOMEM;
-	nmap->entry[idx].value = kmalloc(offmap->map.value_size, GFP_USER);
+	nmap->entry[idx].value = kmalloc(offmap->map.value_size,
+					 GFP_KERNEL_ACCOUNT | __GFP_NOWARN);
 	if (!nmap->entry[idx].value) {
 		kfree(nmap->entry[idx].key);
 		nmap->entry[idx].key = NULL;
@@ -475,7 +477,7 @@ nsim_bpf_map_alloc(struct netdevsim *ns, struct bpf_offloaded_map *offmap)
 	if (offmap->map.map_flags)
 		return -EINVAL;
 
-	nmap = kzalloc(sizeof(*nmap), GFP_USER);
+	nmap = kzalloc(sizeof(*nmap), GFP_KERNEL_ACCOUNT);
 	if (!nmap)
 		return -ENOMEM;
 
diff --git linux-libre-4.19.255-gnu1/drivers/net/usb/ax88179_178a.c linux-libre-4.19.256-gnu1/drivers/net/usb/ax88179_178a.c
index efee7bacfd76..cf6ff8732fb2 100644
--- linux-libre-4.19.255-gnu1/drivers/net/usb/ax88179_178a.c
+++ linux-libre-4.19.256-gnu1/drivers/net/usb/ax88179_178a.c
@@ -1706,7 +1706,7 @@ static const struct driver_info ax88179_info = {
 	.link_reset = ax88179_link_reset,
 	.reset = ax88179_reset,
 	.stop = ax88179_stop,
-	.flags = FLAG_ETHER | FLAG_FRAMING_AX | FLAG_SEND_ZLP,
+	.flags = FLAG_ETHER | FLAG_FRAMING_AX,
 	.rx_fixup = ax88179_rx_fixup,
 	.tx_fixup = ax88179_tx_fixup,
 };
@@ -1719,7 +1719,7 @@ static const struct driver_info ax88178a_info = {
 	.link_reset = ax88179_link_reset,
 	.reset = ax88179_reset,
 	.stop = ax88179_stop,
-	.flags = FLAG_ETHER | FLAG_FRAMING_AX | FLAG_SEND_ZLP,
+	.flags = FLAG_ETHER | FLAG_FRAMING_AX,
 	.rx_fixup = ax88179_rx_fixup,
 	.tx_fixup = ax88179_tx_fixup,
 };
@@ -1732,7 +1732,7 @@ static const struct driver_info cypress_GX3_info = {
 	.link_reset = ax88179_link_reset,
 	.reset = ax88179_reset,
 	.stop = ax88179_stop,
-	.flags = FLAG_ETHER | FLAG_FRAMING_AX | FLAG_SEND_ZLP,
+	.flags = FLAG_ETHER | FLAG_FRAMING_AX,
 	.rx_fixup = ax88179_rx_fixup,
 	.tx_fixup = ax88179_tx_fixup,
 };
@@ -1745,7 +1745,7 @@ static const struct driver_info dlink_dub1312_info = {
 	.link_reset = ax88179_link_reset,
 	.reset = ax88179_reset,
 	.stop = ax88179_stop,
-	.flags = FLAG_ETHER | FLAG_FRAMING_AX | FLAG_SEND_ZLP,
+	.flags = FLAG_ETHER | FLAG_FRAMING_AX,
 	.rx_fixup = ax88179_rx_fixup,
 	.tx_fixup = ax88179_tx_fixup,
 };
@@ -1758,7 +1758,7 @@ static const struct driver_info sitecom_info = {
 	.link_reset = ax88179_link_reset,
 	.reset = ax88179_reset,
 	.stop = ax88179_stop,
-	.flags = FLAG_ETHER | FLAG_FRAMING_AX | FLAG_SEND_ZLP,
+	.flags = FLAG_ETHER | FLAG_FRAMING_AX,
 	.rx_fixup = ax88179_rx_fixup,
 	.tx_fixup = ax88179_tx_fixup,
 };
@@ -1771,7 +1771,7 @@ static const struct driver_info samsung_info = {
 	.link_reset = ax88179_link_reset,
 	.reset = ax88179_reset,
 	.stop = ax88179_stop,
-	.flags = FLAG_ETHER | FLAG_FRAMING_AX | FLAG_SEND_ZLP,
+	.flags = FLAG_ETHER | FLAG_FRAMING_AX,
 	.rx_fixup = ax88179_rx_fixup,
 	.tx_fixup = ax88179_tx_fixup,
 };
@@ -1784,7 +1784,7 @@ static const struct driver_info lenovo_info = {
 	.link_reset = ax88179_link_reset,
 	.reset = ax88179_reset,
 	.stop = ax88179_stop,
-	.flags = FLAG_ETHER | FLAG_FRAMING_AX | FLAG_SEND_ZLP,
+	.flags = FLAG_ETHER | FLAG_FRAMING_AX,
 	.rx_fixup = ax88179_rx_fixup,
 	.tx_fixup = ax88179_tx_fixup,
 };
@@ -1797,7 +1797,7 @@ static const struct driver_info belkin_info = {
 	.link_reset = ax88179_link_reset,
 	.reset	= ax88179_reset,
 	.stop	= ax88179_stop,
-	.flags	= FLAG_ETHER | FLAG_FRAMING_AX | FLAG_SEND_ZLP,
+	.flags	= FLAG_ETHER | FLAG_FRAMING_AX,
 	.rx_fixup = ax88179_rx_fixup,
 	.tx_fixup = ax88179_tx_fixup,
 };
diff --git linux-libre-4.19.255-gnu1/drivers/net/usb/usbnet.c linux-libre-4.19.256-gnu1/drivers/net/usb/usbnet.c
index e5c7a5c05109..1316f5b0c0d7 100644
--- linux-libre-4.19.255-gnu1/drivers/net/usb/usbnet.c
+++ linux-libre-4.19.256-gnu1/drivers/net/usb/usbnet.c
@@ -845,13 +845,11 @@ int usbnet_stop (struct net_device *net)
 
 	mpn = !test_and_clear_bit(EVENT_NO_RUNTIME_PM, &dev->flags);
 
-	/* deferred work (task, timer, softirq) must also stop.
-	 * can't flush_scheduled_work() until we drop rtnl (later),
-	 * else workers could deadlock; so make workers a NOP.
-	 */
+	/* deferred work (timer, softirq, task) must also stop */
 	dev->flags = 0;
 	del_timer_sync (&dev->delay);
 	tasklet_kill (&dev->bh);
+	cancel_work_sync(&dev->kevent);
 	if (!pm)
 		usb_autopm_put_interface(dev->intf);
 
@@ -1614,8 +1612,6 @@ void usbnet_disconnect (struct usb_interface *intf)
 	net = dev->net;
 	unregister_netdev (net);
 
-	cancel_work_sync(&dev->kevent);
-
 	usb_scuttle_anchored_urbs(&dev->deferred);
 
 	if (dev->driver_info->unbind)
diff --git linux-libre-4.19.255-gnu1/drivers/net/wireless/ath/ath10k/snoc.c linux-libre-4.19.256-gnu1/drivers/net/wireless/ath/ath10k/snoc.c
index 241e6f0e1dfe..4489875fc87b 100644
--- linux-libre-4.19.255-gnu1/drivers/net/wireless/ath/ath10k/snoc.c
+++ linux-libre-4.19.256-gnu1/drivers/net/wireless/ath/ath10k/snoc.c
@@ -879,13 +879,12 @@ static void ath10k_snoc_init_napi(struct ath10k *ar)
 static int ath10k_snoc_request_irq(struct ath10k *ar)
 {
 	struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
-	int irqflags = IRQF_TRIGGER_RISING;
 	int ret, id;
 
 	for (id = 0; id < CE_COUNT_MAX; id++) {
 		ret = request_irq(ar_snoc->ce_irqs[id].irq_line,
-				  ath10k_snoc_per_engine_handler,
-				  irqflags, ce_name[id], ar);
+				  ath10k_snoc_per_engine_handler, 0,
+				  ce_name[id], ar);
 		if (ret) {
 			ath10k_err(ar,
 				   "failed to register IRQ handler for CE %d: %d",
diff --git linux-libre-4.19.255-gnu1/drivers/net/wireless/ath/ath9k/htc.h linux-libre-4.19.256-gnu1/drivers/net/wireless/ath/ath9k/htc.h
index 9f64e32381f9..81107100e368 100644
--- linux-libre-4.19.255-gnu1/drivers/net/wireless/ath/ath9k/htc.h
+++ linux-libre-4.19.256-gnu1/drivers/net/wireless/ath/ath9k/htc.h
@@ -325,11 +325,11 @@ static inline struct ath9k_htc_tx_ctl *HTC_SKB_CB(struct sk_buff *skb)
 }
 
 #ifdef CONFIG_ATH9K_HTC_DEBUGFS
-
-#define TX_STAT_INC(c) (hif_dev->htc_handle->drv_priv->debug.tx_stats.c++)
-#define TX_STAT_ADD(c, a) (hif_dev->htc_handle->drv_priv->debug.tx_stats.c += a)
-#define RX_STAT_INC(c) (hif_dev->htc_handle->drv_priv->debug.skbrx_stats.c++)
-#define RX_STAT_ADD(c, a) (hif_dev->htc_handle->drv_priv->debug.skbrx_stats.c += a)
+#define __STAT_SAFE(expr) (hif_dev->htc_handle->drv_priv ? (expr) : 0)
+#define TX_STAT_INC(c) __STAT_SAFE(hif_dev->htc_handle->drv_priv->debug.tx_stats.c++)
+#define TX_STAT_ADD(c, a) __STAT_SAFE(hif_dev->htc_handle->drv_priv->debug.tx_stats.c += a)
+#define RX_STAT_INC(c) __STAT_SAFE(hif_dev->htc_handle->drv_priv->debug.skbrx_stats.c++)
+#define RX_STAT_ADD(c, a) __STAT_SAFE(hif_dev->htc_handle->drv_priv->debug.skbrx_stats.c += a)
 #define CAB_STAT_INC   priv->debug.tx_stats.cab_queued++
 
 #define TX_QSTAT_INC(q) (priv->debug.tx_stats.queue_stats[q]++)
diff --git linux-libre-4.19.255-gnu1/drivers/net/wireless/ath/ath9k/htc_drv_init.c linux-libre-4.19.256-gnu1/drivers/net/wireless/ath/ath9k/htc_drv_init.c
index cb136d9d4621..49d587330990 100644
--- linux-libre-4.19.255-gnu1/drivers/net/wireless/ath/ath9k/htc_drv_init.c
+++ linux-libre-4.19.256-gnu1/drivers/net/wireless/ath/ath9k/htc_drv_init.c
@@ -946,7 +946,6 @@ int ath9k_htc_probe_device(struct htc_target *htc_handle, struct device *dev,
 	priv->hw = hw;
 	priv->htc = htc_handle;
 	priv->dev = dev;
-	htc_handle->drv_priv = priv;
 	SET_IEEE80211_DEV(hw, priv->dev);
 
 	ret = ath9k_htc_wait_for_target(priv);
@@ -967,6 +966,8 @@ int ath9k_htc_probe_device(struct htc_target *htc_handle, struct device *dev,
 	if (ret)
 		goto err_init;
 
+	htc_handle->drv_priv = priv;
+
 	return 0;
 
 err_init:
diff --git linux-libre-4.19.255-gnu1/drivers/net/wireless/ath/wil6210/debugfs.c linux-libre-4.19.256-gnu1/drivers/net/wireless/ath/wil6210/debugfs.c
index 55a809cb3105..3a46b319e9f1 100644
--- linux-libre-4.19.255-gnu1/drivers/net/wireless/ath/wil6210/debugfs.c
+++ linux-libre-4.19.256-gnu1/drivers/net/wireless/ath/wil6210/debugfs.c
@@ -1002,20 +1002,14 @@ static ssize_t wil_write_file_wmi(struct file *file, const char __user *buf,
 	void *cmd;
 	int cmdlen = len - sizeof(struct wmi_cmd_hdr);
 	u16 cmdid;
-	int rc, rc1;
+	int rc1;
 
-	if (cmdlen < 0)
+	if (cmdlen < 0 || *ppos != 0)
 		return -EINVAL;
 
-	wmi = kmalloc(len, GFP_KERNEL);
-	if (!wmi)
-		return -ENOMEM;
-
-	rc = simple_write_to_buffer(wmi, len, ppos, buf, len);
-	if (rc < 0) {
-		kfree(wmi);
-		return rc;
-	}
+	wmi = memdup_user(buf, len);
+	if (IS_ERR(wmi))
+		return PTR_ERR(wmi);
 
 	cmd = (cmdlen > 0) ? &wmi[1] : NULL;
 	cmdid = le16_to_cpu(wmi->command_id);
@@ -1025,7 +1019,7 @@ static ssize_t wil_write_file_wmi(struct file *file, const char __user *buf,
 
 	wil_info(wil, "0x%04x[%d] -> %d\n", cmdid, cmdlen, rc1);
 
-	return rc;
+	return len;
 }
 
 static const struct file_operations fops_wmi = {
diff --git linux-libre-4.19.255-gnu1/drivers/net/wireless/intel/iwlegacy/4965-rs.c linux-libre-4.19.256-gnu1/drivers/net/wireless/intel/iwlegacy/4965-rs.c
index 54ff83829afb..f204e139e5f0 100644
--- linux-libre-4.19.255-gnu1/drivers/net/wireless/intel/iwlegacy/4965-rs.c
+++ linux-libre-4.19.256-gnu1/drivers/net/wireless/intel/iwlegacy/4965-rs.c
@@ -2422,7 +2422,7 @@ il4965_rs_fill_link_cmd(struct il_priv *il, struct il_lq_sta *lq_sta,
 		/* Repeat initial/next rate.
 		 * For legacy IL_NUMBER_TRY == 1, this loop will not execute.
 		 * For HT IL_HT_NUMBER_TRY == 3, this executes twice. */
-		while (repeat_rate > 0 && idx < LINK_QUAL_MAX_RETRY_NUM) {
+		while (repeat_rate > 0) {
 			if (is_legacy(tbl_type.lq_type)) {
 				if (ant_toggle_cnt < NUM_TRY_BEFORE_ANT_TOGGLE)
 					ant_toggle_cnt++;
@@ -2441,6 +2441,8 @@ il4965_rs_fill_link_cmd(struct il_priv *il, struct il_lq_sta *lq_sta,
 			    cpu_to_le32(new_rate);
 			repeat_rate--;
 			idx++;
+			if (idx >= LINK_QUAL_MAX_RETRY_NUM)
+				goto out;
 		}
 
 		il4965_rs_get_tbl_info_from_mcs(new_rate, lq_sta->band,
@@ -2485,6 +2487,7 @@ il4965_rs_fill_link_cmd(struct il_priv *il, struct il_lq_sta *lq_sta,
 		repeat_rate--;
 	}
 
+out:
 	lq_cmd->agg_params.agg_frame_cnt_limit = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
 	lq_cmd->agg_params.agg_dis_start_th = LINK_QUAL_AGG_DISABLE_START_DEF;
 
diff --git linux-libre-4.19.255-gnu1/drivers/net/wireless/intersil/p54/main.c linux-libre-4.19.256-gnu1/drivers/net/wireless/intersil/p54/main.c
index 1c6d428515a4..b15a1b99f28f 100644
--- linux-libre-4.19.255-gnu1/drivers/net/wireless/intersil/p54/main.c
+++ linux-libre-4.19.256-gnu1/drivers/net/wireless/intersil/p54/main.c
@@ -688,7 +688,7 @@ static void p54_flush(struct ieee80211_hw *dev, struct ieee80211_vif *vif,
 	 * queues have already been stopped and no new frames can sneak
 	 * up from behind.
 	 */
-	while ((total = p54_flush_count(priv) && i--)) {
+	while ((total = p54_flush_count(priv)) && i--) {
 		/* waste time */
 		msleep(20);
 	}
diff --git linux-libre-4.19.255-gnu1/drivers/net/wireless/intersil/p54/p54spi.c linux-libre-4.19.256-gnu1/drivers/net/wireless/intersil/p54/p54spi.c
index 6f859d0406a9..6ba4439d80fb 100644
--- linux-libre-4.19.255-gnu1/drivers/net/wireless/intersil/p54/p54spi.c
+++ linux-libre-4.19.256-gnu1/drivers/net/wireless/intersil/p54/p54spi.c
@@ -177,7 +177,7 @@ static int p54spi_request_firmware(struct ieee80211_hw *dev)
 
 	ret = p54_parse_firmware(dev, priv->firmware);
 	if (ret) {
-		release_firmware(priv->firmware);
+		/* the firmware is released by the caller */
 		return ret;
 	}
 
@@ -672,6 +672,7 @@ static int p54spi_probe(struct spi_device *spi)
 	return 0;
 
 err_free_common:
+	release_firmware(priv->firmware);
 	free_irq(gpio_to_irq(p54spi_gpio_irq), spi);
 err_free_gpio_irq:
 	gpio_free(p54spi_gpio_irq);
diff --git linux-libre-4.19.255-gnu1/drivers/net/wireless/mac80211_hwsim.c linux-libre-4.19.256-gnu1/drivers/net/wireless/mac80211_hwsim.c
index 3d8e17bb8a10..7de92af2af02 100644
--- linux-libre-4.19.255-gnu1/drivers/net/wireless/mac80211_hwsim.c
+++ linux-libre-4.19.256-gnu1/drivers/net/wireless/mac80211_hwsim.c
@@ -552,7 +552,7 @@ struct mac80211_hwsim_data {
 	bool ps_poll_pending;
 	struct dentry *debugfs;
 
-	uintptr_t pending_cookie;
+	atomic_t pending_cookie;
 	struct sk_buff_head pending;	/* packets pending */
 	/*
 	 * Only radios in the same group can communicate together (the
@@ -1136,8 +1136,7 @@ static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
 		goto nla_put_failure;
 
 	/* We create a cookie to identify this skb */
-	data->pending_cookie++;
-	cookie = data->pending_cookie;
+	cookie = atomic_inc_return(&data->pending_cookie);
 	info->rate_driver_data[0] = (void *)cookie;
 	if (nla_put_u64_64bit(skb, HWSIM_ATTR_COOKIE, cookie, HWSIM_ATTR_PAD))
 		goto nla_put_failure;
@@ -3120,6 +3119,7 @@ static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
 	const u8 *src;
 	unsigned int hwsim_flags;
 	int i;
+	unsigned long flags;
 	bool found = false;
 
 	if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
@@ -3144,18 +3144,20 @@ static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
 		goto out;
 
 	/* look for the skb matching the cookie passed back from user */
+	spin_lock_irqsave(&data2->pending.lock, flags);
 	skb_queue_walk_safe(&data2->pending, skb, tmp) {
-		u64 skb_cookie;
+		uintptr_t skb_cookie;
 
 		txi = IEEE80211_SKB_CB(skb);
-		skb_cookie = (u64)(uintptr_t)txi->rate_driver_data[0];
+		skb_cookie = (uintptr_t)txi->rate_driver_data[0];
 
 		if (skb_cookie == ret_skb_cookie) {
-			skb_unlink(skb, &data2->pending);
+			__skb_unlink(skb, &data2->pending);
 			found = true;
 			break;
 		}
 	}
+	spin_unlock_irqrestore(&data2->pending.lock, flags);
 
 	/* not found */
 	if (!found)
diff --git linux-libre-4.19.255-gnu1/drivers/net/wireless/marvell/libertas/if_usb.c linux-libre-4.19.256-gnu1/drivers/net/wireless/marvell/libertas/if_usb.c
index 04eb2ae40353..7e8b07687ff3 100644
--- linux-libre-4.19.255-gnu1/drivers/net/wireless/marvell/libertas/if_usb.c
+++ linux-libre-4.19.256-gnu1/drivers/net/wireless/marvell/libertas/if_usb.c
@@ -279,6 +279,7 @@ static int if_usb_probe(struct usb_interface *intf,
 	return 0;
 
 err_get_fw:
+	usb_put_dev(udev);
 	lbs_remove_card(priv);
 err_add_card:
 	if_usb_reset_device(cardp);
diff --git linux-libre-4.19.255-gnu1/drivers/net/wireless/mediatek/mt76/mac80211.c linux-libre-4.19.256-gnu1/drivers/net/wireless/mediatek/mt76/mac80211.c
index 1b5abd4816ed..203b888f38d8 100644
--- linux-libre-4.19.255-gnu1/drivers/net/wireless/mediatek/mt76/mac80211.c
+++ linux-libre-4.19.256-gnu1/drivers/net/wireless/mediatek/mt76/mac80211.c
@@ -114,6 +114,7 @@ static int mt76_led_init(struct mt76_dev *dev)
 		if (!of_property_read_u32(np, "led-sources", &led_pin))
 			dev->led_pin = led_pin;
 		dev->led_al = of_property_read_bool(np, "led-active-low");
+		of_node_put(np);
 	}
 
 	return devm_led_classdev_register(dev->dev, &dev->led_cdev);
diff --git linux-libre-4.19.255-gnu1/drivers/net/wireless/realtek/rtlwifi/debug.c linux-libre-4.19.256-gnu1/drivers/net/wireless/realtek/rtlwifi/debug.c
index 498994041bbc..474439fc2da1 100644
--- linux-libre-4.19.255-gnu1/drivers/net/wireless/realtek/rtlwifi/debug.c
+++ linux-libre-4.19.256-gnu1/drivers/net/wireless/realtek/rtlwifi/debug.c
@@ -370,8 +370,8 @@ static ssize_t rtl_debugfs_set_write_h2c(struct file *filp,
 
 	tmp_len = (count > sizeof(tmp) - 1 ? sizeof(tmp) - 1 : count);
 
-	if (!buffer || copy_from_user(tmp, buffer, tmp_len))
-		return count;
+	if (copy_from_user(tmp, buffer, tmp_len))
+		return -EFAULT;
 
 	tmp[tmp_len] = '\0';
 
@@ -381,8 +381,8 @@ static ssize_t rtl_debugfs_set_write_h2c(struct file *filp,
 			 &h2c_data[4], &h2c_data[5],
 			 &h2c_data[6], &h2c_data[7]);
 
-	if (h2c_len <= 0)
-		return count;
+	if (h2c_len == 0)
+		return -EINVAL;
 
 	for (i = 0; i < h2c_len; i++)
 		h2c_data_packed[i] = (u8)h2c_data[i];
diff --git linux-libre-4.19.255-gnu1/drivers/ntb/test/ntb_tool.c linux-libre-4.19.256-gnu1/drivers/ntb/test/ntb_tool.c
index 311d6ab8d016..6301aa413c3b 100644
--- linux-libre-4.19.255-gnu1/drivers/ntb/test/ntb_tool.c
+++ linux-libre-4.19.256-gnu1/drivers/ntb/test/ntb_tool.c
@@ -367,14 +367,16 @@ static ssize_t tool_fn_write(struct tool_ctx *tc,
 	u64 bits;
 	int n;
 
+	if (*offp)
+		return 0;
+
 	buf = kmalloc(size + 1, GFP_KERNEL);
 	if (!buf)
 		return -ENOMEM;
 
-	ret = simple_write_to_buffer(buf, size, offp, ubuf, size);
-	if (ret < 0) {
+	if (copy_from_user(buf, ubuf, size)) {
 		kfree(buf);
-		return ret;
+		return -EFAULT;
 	}
 
 	buf[size] = 0;
diff --git linux-libre-4.19.255-gnu1/drivers/pci/quirks.c linux-libre-4.19.256-gnu1/drivers/pci/quirks.c
index 7cd38c9eaa02..f494e76faaa0 100644
--- linux-libre-4.19.255-gnu1/drivers/pci/quirks.c
+++ linux-libre-4.19.256-gnu1/drivers/pci/quirks.c
@@ -4799,6 +4799,9 @@ static const struct pci_dev_acs_enabled {
 	{ PCI_VENDOR_ID_AMPERE, 0xE00C, pci_quirk_xgene_acs },
 	/* Broadcom multi-function device */
 	{ PCI_VENDOR_ID_BROADCOM, 0x16D7, pci_quirk_mf_endpoint_acs },
+	{ PCI_VENDOR_ID_BROADCOM, 0x1750, pci_quirk_mf_endpoint_acs },
+	{ PCI_VENDOR_ID_BROADCOM, 0x1751, pci_quirk_mf_endpoint_acs },
+	{ PCI_VENDOR_ID_BROADCOM, 0x1752, pci_quirk_mf_endpoint_acs },
 	{ PCI_VENDOR_ID_BROADCOM, 0xD714, pci_quirk_brcm_acs },
 	{ 0 }
 };
diff --git linux-libre-4.19.255-gnu1/drivers/pinctrl/nomadik/pinctrl-nomadik.c linux-libre-4.19.256-gnu1/drivers/pinctrl/nomadik/pinctrl-nomadik.c
index 415e91360994..70a3026304b6 100644
--- linux-libre-4.19.255-gnu1/drivers/pinctrl/nomadik/pinctrl-nomadik.c
+++ linux-libre-4.19.256-gnu1/drivers/pinctrl/nomadik/pinctrl-nomadik.c
@@ -1455,8 +1455,10 @@ static int nmk_pinctrl_dt_subnode_to_map(struct pinctrl_dev *pctldev,
 
 	has_config = nmk_pinctrl_dt_get_config(np, &configs);
 	np_config = of_parse_phandle(np, "ste,config", 0);
-	if (np_config)
+	if (np_config) {
 		has_config |= nmk_pinctrl_dt_get_config(np_config, &configs);
+		of_node_put(np_config);
+	}
 	if (has_config) {
 		const char *gpio_name;
 		const char *pin;
diff --git linux-libre-4.19.255-gnu1/drivers/pinctrl/qcom/pinctrl-msm8916.c linux-libre-4.19.256-gnu1/drivers/pinctrl/qcom/pinctrl-msm8916.c
index 20ebf244e80d..359f5b43bebc 100644
--- linux-libre-4.19.255-gnu1/drivers/pinctrl/qcom/pinctrl-msm8916.c
+++ linux-libre-4.19.256-gnu1/drivers/pinctrl/qcom/pinctrl-msm8916.c
@@ -852,8 +852,8 @@ static const struct msm_pingroup msm8916_groups[] = {
 	PINGROUP(28, pwr_modem_enabled_a, NA, NA, NA, NA, NA, qdss_tracedata_b, NA, atest_combodac),
 	PINGROUP(29, cci_i2c, NA, NA, NA, NA, NA, qdss_tracedata_b, NA, atest_combodac),
 	PINGROUP(30, cci_i2c, NA, NA, NA, NA, NA, NA, NA, qdss_tracedata_b),
-	PINGROUP(31, cci_timer0, NA, NA, NA, NA, NA, NA, NA, NA),
-	PINGROUP(32, cci_timer1, NA, NA, NA, NA, NA, NA, NA, NA),
+	PINGROUP(31, cci_timer0, flash_strobe, NA, NA, NA, NA, NA, NA, NA),
+	PINGROUP(32, cci_timer1, flash_strobe, NA, NA, NA, NA, NA, NA, NA),
 	PINGROUP(33, cci_async, NA, NA, NA, NA, NA, NA, NA, qdss_tracedata_b),
 	PINGROUP(34, pwr_nav_enabled_a, NA, NA, NA, NA, NA, NA, NA, qdss_tracedata_b),
 	PINGROUP(35, pwr_crypto_enabled_a, NA, NA, NA, NA, NA, NA, NA, qdss_tracedata_b),
diff --git linux-libre-4.19.255-gnu1/drivers/platform/olpc/olpc-ec.c linux-libre-4.19.256-gnu1/drivers/platform/olpc/olpc-ec.c
index 374a8028fec7..b36a000ed969 100644
--- linux-libre-4.19.255-gnu1/drivers/platform/olpc/olpc-ec.c
+++ linux-libre-4.19.256-gnu1/drivers/platform/olpc/olpc-ec.c
@@ -170,7 +170,7 @@ static ssize_t ec_dbgfs_cmd_write(struct file *file, const char __user *buf,
 	int i, m;
 	unsigned char ec_cmd[EC_MAX_CMD_ARGS];
 	unsigned int ec_cmd_int[EC_MAX_CMD_ARGS];
-	char cmdbuf[64];
+	char cmdbuf[64] = "";
 	int ec_cmd_bytes;
 
 	mutex_lock(&ec_dbgfs_lock);
diff --git linux-libre-4.19.255-gnu1/drivers/regulator/of_regulator.c linux-libre-4.19.256-gnu1/drivers/regulator/of_regulator.c
index b255590aef36..b2bd7ee46c45 100644
--- linux-libre-4.19.255-gnu1/drivers/regulator/of_regulator.c
+++ linux-libre-4.19.256-gnu1/drivers/regulator/of_regulator.c
@@ -189,8 +189,12 @@ static void of_get_regulation_constraints(struct device_node *np,
 		}
 
 		suspend_np = of_get_child_by_name(np, regulator_states[i]);
-		if (!suspend_np || !suspend_state)
+		if (!suspend_np)
 			continue;
+		if (!suspend_state) {
+			of_node_put(suspend_np);
+			continue;
+		}
 
 		if (!of_property_read_u32(suspend_np, "regulator-mode",
 					  &pval)) {
diff --git linux-libre-4.19.255-gnu1/drivers/remoteproc/qcom_wcnss.c linux-libre-4.19.256-gnu1/drivers/remoteproc/qcom_wcnss.c
index ed3b721a14e4..d5f5f8112ae8 100644
--- linux-libre-4.19.255-gnu1/drivers/remoteproc/qcom_wcnss.c
+++ linux-libre-4.19.256-gnu1/drivers/remoteproc/qcom_wcnss.c
@@ -415,6 +415,7 @@ static int wcnss_request_irq(struct qcom_wcnss *wcnss,
 			     irq_handler_t thread_fn)
 {
 	int ret;
+	int irq_number;
 
 	ret = platform_get_irq_byname(pdev, name);
 	if (ret < 0 && optional) {
@@ -425,14 +426,19 @@ static int wcnss_request_irq(struct qcom_wcnss *wcnss,
 		return ret;
 	}
 
+	irq_number = ret;
+
 	ret = devm_request_threaded_irq(&pdev->dev, ret,
 					NULL, thread_fn,
 					IRQF_TRIGGER_RISING | IRQF_ONESHOT,
 					"wcnss", wcnss);
-	if (ret)
+	if (ret) {
 		dev_err(&pdev->dev, "request %s IRQ failed\n", name);
+		return ret;
+	}
 
-	return ret;
+	/* Return the IRQ number if the IRQ was successfully acquired */
+	return irq_number;
 }
 
 static int wcnss_alloc_memory_region(struct qcom_wcnss *wcnss)
diff --git linux-libre-4.19.255-gnu1/drivers/rpmsg/qcom_smd.c linux-libre-4.19.256-gnu1/drivers/rpmsg/qcom_smd.c
index f23f10887d93..f4f950c231d6 100644
--- linux-libre-4.19.255-gnu1/drivers/rpmsg/qcom_smd.c
+++ linux-libre-4.19.256-gnu1/drivers/rpmsg/qcom_smd.c
@@ -1364,6 +1364,7 @@ static int qcom_smd_parse_edge(struct device *dev,
 		}
 
 		edge->ipc_regmap = syscon_node_to_regmap(syscon_np);
+		of_node_put(syscon_np);
 		if (IS_ERR(edge->ipc_regmap)) {
 			ret = PTR_ERR(edge->ipc_regmap);
 			goto put_node;
diff --git linux-libre-4.19.255-gnu1/drivers/s390/char/zcore.c linux-libre-4.19.256-gnu1/drivers/s390/char/zcore.c
index 76d3c50bf078..ba8fc756264b 100644
--- linux-libre-4.19.255-gnu1/drivers/s390/char/zcore.c
+++ linux-libre-4.19.256-gnu1/drivers/s390/char/zcore.c
@@ -53,6 +53,7 @@ static struct dentry *zcore_reipl_file;
 static struct dentry *zcore_hsa_file;
 static struct ipl_parameter_block *ipl_block;
 
+static DEFINE_MUTEX(hsa_buf_mutex);
 static char hsa_buf[PAGE_SIZE] __aligned(PAGE_SIZE);
 
 /*
@@ -69,19 +70,24 @@ int memcpy_hsa_user(void __user *dest, unsigned long src, size_t count)
 	if (!hsa_available)
 		return -ENODATA;
 
+	mutex_lock(&hsa_buf_mutex);
 	while (count) {
 		if (sclp_sdias_copy(hsa_buf, src / PAGE_SIZE + 2, 1)) {
 			TRACE("sclp_sdias_copy() failed\n");
+			mutex_unlock(&hsa_buf_mutex);
 			return -EIO;
 		}
 		offset = src % PAGE_SIZE;
 		bytes = min(PAGE_SIZE - offset, count);
-		if (copy_to_user(dest, hsa_buf + offset, bytes))
+		if (copy_to_user(dest, hsa_buf + offset, bytes)) {
+			mutex_unlock(&hsa_buf_mutex);
 			return -EFAULT;
+		}
 		src += bytes;
 		dest += bytes;
 		count -= bytes;
 	}
+	mutex_unlock(&hsa_buf_mutex);
 	return 0;
 }
 
@@ -99,9 +105,11 @@ int memcpy_hsa_kernel(void *dest, unsigned long src, size_t count)
 	if (!hsa_available)
 		return -ENODATA;
 
+	mutex_lock(&hsa_buf_mutex);
 	while (count) {
 		if (sclp_sdias_copy(hsa_buf, src / PAGE_SIZE + 2, 1)) {
 			TRACE("sclp_sdias_copy() failed\n");
+			mutex_unlock(&hsa_buf_mutex);
 			return -EIO;
 		}
 		offset = src % PAGE_SIZE;
@@ -111,6 +119,7 @@ int memcpy_hsa_kernel(void *dest, unsigned long src, size_t count)
 		dest += bytes;
 		count -= bytes;
 	}
+	mutex_unlock(&hsa_buf_mutex);
 	return 0;
 }
 
diff --git linux-libre-4.19.255-gnu1/drivers/s390/cio/vfio_ccw_drv.c linux-libre-4.19.256-gnu1/drivers/s390/cio/vfio_ccw_drv.c
index 7a06cdff6572..862b0eb0fe6d 100644
--- linux-libre-4.19.255-gnu1/drivers/s390/cio/vfio_ccw_drv.c
+++ linux-libre-4.19.256-gnu1/drivers/s390/cio/vfio_ccw_drv.c
@@ -205,19 +205,11 @@ static int vfio_ccw_sch_event(struct subchannel *sch, int process)
 	if (work_pending(&sch->todo_work))
 		goto out_unlock;
 
-	if (cio_update_schib(sch)) {
-		vfio_ccw_fsm_event(private, VFIO_CCW_EVENT_NOT_OPER);
-		rc = 0;
-		goto out_unlock;
-	}
-
-	private = dev_get_drvdata(&sch->dev);
-	if (private->state == VFIO_CCW_STATE_NOT_OPER) {
-		private->state = private->mdev ? VFIO_CCW_STATE_IDLE :
-				 VFIO_CCW_STATE_STANDBY;
-	}
 	rc = 0;
 
+	if (cio_update_schib(sch))
+		vfio_ccw_fsm_event(private, VFIO_CCW_EVENT_NOT_OPER);
+
 out_unlock:
 	spin_unlock_irqrestore(sch->lock, flags);
 
diff --git linux-libre-4.19.255-gnu1/drivers/s390/scsi/zfcp_fc.c linux-libre-4.19.256-gnu1/drivers/s390/scsi/zfcp_fc.c
index 09ce175bbfcf..dc87a6b84d73 100644
--- linux-libre-4.19.255-gnu1/drivers/s390/scsi/zfcp_fc.c
+++ linux-libre-4.19.256-gnu1/drivers/s390/scsi/zfcp_fc.c
@@ -145,27 +145,33 @@ void zfcp_fc_enqueue_event(struct zfcp_adapter *adapter,
 
 static int zfcp_fc_wka_port_get(struct zfcp_fc_wka_port *wka_port)
 {
+	int ret = -EIO;
+
 	if (mutex_lock_interruptible(&wka_port->mutex))
 		return -ERESTARTSYS;
 
 	if (wka_port->status == ZFCP_FC_WKA_PORT_OFFLINE ||
 	    wka_port->status == ZFCP_FC_WKA_PORT_CLOSING) {
 		wka_port->status = ZFCP_FC_WKA_PORT_OPENING;
-		if (zfcp_fsf_open_wka_port(wka_port))
+		if (zfcp_fsf_open_wka_port(wka_port)) {
+			/* could not even send request, nothing to wait for */
 			wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
+			goto out;
+		}
 	}
 
-	mutex_unlock(&wka_port->mutex);
-
-	wait_event(wka_port->completion_wq,
+	wait_event(wka_port->opened,
 		   wka_port->status == ZFCP_FC_WKA_PORT_ONLINE ||
 		   wka_port->status == ZFCP_FC_WKA_PORT_OFFLINE);
 
 	if (wka_port->status == ZFCP_FC_WKA_PORT_ONLINE) {
 		atomic_inc(&wka_port->refcount);
-		return 0;
+		ret = 0;
+		goto out;
 	}
-	return -EIO;
+out:
+	mutex_unlock(&wka_port->mutex);
+	return ret;
 }
 
 static void zfcp_fc_wka_port_offline(struct work_struct *work)
@@ -181,9 +187,12 @@ static void zfcp_fc_wka_port_offline(struct work_struct *work)
 
 	wka_port->status = ZFCP_FC_WKA_PORT_CLOSING;
 	if (zfcp_fsf_close_wka_port(wka_port)) {
+		/* could not even send request, nothing to wait for */
 		wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
-		wake_up(&wka_port->completion_wq);
+		goto out;
 	}
+	wait_event(wka_port->closed,
+		   wka_port->status == ZFCP_FC_WKA_PORT_OFFLINE);
 out:
 	mutex_unlock(&wka_port->mutex);
 }
@@ -193,13 +202,15 @@ static void zfcp_fc_wka_port_put(struct zfcp_fc_wka_port *wka_port)
 	if (atomic_dec_return(&wka_port->refcount) != 0)
 		return;
 	/* wait 10 milliseconds, other reqs might pop in */
-	schedule_delayed_work(&wka_port->work, HZ / 100);
+	queue_delayed_work(wka_port->adapter->work_queue, &wka_port->work,
+			   msecs_to_jiffies(10));
 }
 
 static void zfcp_fc_wka_port_init(struct zfcp_fc_wka_port *wka_port, u32 d_id,
 				  struct zfcp_adapter *adapter)
 {
-	init_waitqueue_head(&wka_port->completion_wq);
+	init_waitqueue_head(&wka_port->opened);
+	init_waitqueue_head(&wka_port->closed);
 
 	wka_port->adapter = adapter;
 	wka_port->d_id = d_id;
diff --git linux-libre-4.19.255-gnu1/drivers/s390/scsi/zfcp_fc.h linux-libre-4.19.256-gnu1/drivers/s390/scsi/zfcp_fc.h
index 3cd74729cfb9..9bfce7ff6595 100644
--- linux-libre-4.19.255-gnu1/drivers/s390/scsi/zfcp_fc.h
+++ linux-libre-4.19.256-gnu1/drivers/s390/scsi/zfcp_fc.h
@@ -170,7 +170,8 @@ enum zfcp_fc_wka_status {
 /**
  * struct zfcp_fc_wka_port - representation of well-known-address (WKA) FC port
  * @adapter: Pointer to adapter structure this WKA port belongs to
- * @completion_wq: Wait for completion of open/close command
+ * @opened: Wait for completion of open command
+ * @closed: Wait for completion of close command
  * @status: Current status of WKA port
  * @refcount: Reference count to keep port open as long as it is in use
  * @d_id: FC destination id or well-known-address
@@ -180,7 +181,8 @@ enum zfcp_fc_wka_status {
  */
 struct zfcp_fc_wka_port {
 	struct zfcp_adapter	*adapter;
-	wait_queue_head_t	completion_wq;
+	wait_queue_head_t	opened;
+	wait_queue_head_t	closed;
 	enum zfcp_fc_wka_status	status;
 	atomic_t		refcount;
 	u32			d_id;
diff --git linux-libre-4.19.255-gnu1/drivers/s390/scsi/zfcp_fsf.c linux-libre-4.19.256-gnu1/drivers/s390/scsi/zfcp_fsf.c
index 5bb278a604ed..eae9804f695d 100644
--- linux-libre-4.19.255-gnu1/drivers/s390/scsi/zfcp_fsf.c
+++ linux-libre-4.19.256-gnu1/drivers/s390/scsi/zfcp_fsf.c
@@ -1592,7 +1592,7 @@ static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req)
 		wka_port->status = ZFCP_FC_WKA_PORT_ONLINE;
 	}
 out:
-	wake_up(&wka_port->completion_wq);
+	wake_up(&wka_port->opened);
 }
 
 /**
@@ -1650,7 +1650,7 @@ static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req)
 	}
 
 	wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
-	wake_up(&wka_port->completion_wq);
+	wake_up(&wka_port->closed);
 }
 
 /**
diff --git linux-libre-4.19.255-gnu1/drivers/scsi/sg.c linux-libre-4.19.256-gnu1/drivers/scsi/sg.c
index 6bb45ae19d58..339582690482 100644
--- linux-libre-4.19.255-gnu1/drivers/scsi/sg.c
+++ linux-libre-4.19.256-gnu1/drivers/scsi/sg.c
@@ -195,7 +195,7 @@ static void sg_link_reserve(Sg_fd * sfp, Sg_request * srp, int size);
 static void sg_unlink_reserve(Sg_fd * sfp, Sg_request * srp);
 static Sg_fd *sg_add_sfp(Sg_device * sdp);
 static void sg_remove_sfp(struct kref *);
-static Sg_request *sg_get_rq_mark(Sg_fd * sfp, int pack_id);
+static Sg_request *sg_get_rq_mark(Sg_fd * sfp, int pack_id, bool *busy);
 static Sg_request *sg_add_request(Sg_fd * sfp);
 static int sg_remove_request(Sg_fd * sfp, Sg_request * srp);
 static Sg_device *sg_get_dev(int dev);
@@ -417,6 +417,7 @@ sg_read(struct file *filp, char __user *buf, size_t count, loff_t * ppos)
 	Sg_fd *sfp;
 	Sg_request *srp;
 	int req_pack_id = -1;
+	bool busy;
 	sg_io_hdr_t *hp;
 	struct sg_header *old_hdr = NULL;
 	int retval = 0;
@@ -464,25 +465,19 @@ sg_read(struct file *filp, char __user *buf, size_t count, loff_t * ppos)
 		} else
 			req_pack_id = old_hdr->pack_id;
 	}
-	srp = sg_get_rq_mark(sfp, req_pack_id);
+	srp = sg_get_rq_mark(sfp, req_pack_id, &busy);
 	if (!srp) {		/* now wait on packet to arrive */
-		if (atomic_read(&sdp->detaching)) {
-			retval = -ENODEV;
-			goto free_old_hdr;
-		}
 		if (filp->f_flags & O_NONBLOCK) {
 			retval = -EAGAIN;
 			goto free_old_hdr;
 		}
 		retval = wait_event_interruptible(sfp->read_wait,
-			(atomic_read(&sdp->detaching) ||
-			(srp = sg_get_rq_mark(sfp, req_pack_id))));
-		if (atomic_read(&sdp->detaching)) {
-			retval = -ENODEV;
-			goto free_old_hdr;
-		}
-		if (retval) {
-			/* -ERESTARTSYS as signal hit process */
+			((srp = sg_get_rq_mark(sfp, req_pack_id, &busy)) ||
+			(!busy && atomic_read(&sdp->detaching))));
+		if (!srp) {
+			/* signal or detaching */
+			if (!retval)
+				retval = -ENODEV;
 			goto free_old_hdr;
 		}
 	}
@@ -933,9 +928,7 @@ sg_ioctl(struct file *filp, unsigned int cmd_in, unsigned long arg)
 		if (result < 0)
 			return result;
 		result = wait_event_interruptible(sfp->read_wait,
-			(srp_done(sfp, srp) || atomic_read(&sdp->detaching)));
-		if (atomic_read(&sdp->detaching))
-			return -ENODEV;
+			srp_done(sfp, srp));
 		write_lock_irq(&sfp->rq_list_lock);
 		if (srp->done) {
 			srp->done = 2;
@@ -2079,19 +2072,28 @@ sg_unlink_reserve(Sg_fd * sfp, Sg_request * srp)
 }
 
 static Sg_request *
-sg_get_rq_mark(Sg_fd * sfp, int pack_id)
+sg_get_rq_mark(Sg_fd * sfp, int pack_id, bool *busy)
 {
 	Sg_request *resp;
 	unsigned long iflags;
 
+	*busy = false;
 	write_lock_irqsave(&sfp->rq_list_lock, iflags);
 	list_for_each_entry(resp, &sfp->rq_list, entry) {
-		/* look for requests that are ready + not SG_IO owned */
-		if ((1 == resp->done) && (!resp->sg_io_owned) &&
+		/* look for requests that are not SG_IO owned */
+		if ((!resp->sg_io_owned) &&
 		    ((-1 == pack_id) || (resp->header.pack_id == pack_id))) {
-			resp->done = 2;	/* guard against other readers */
-			write_unlock_irqrestore(&sfp->rq_list_lock, iflags);
-			return resp;
+			switch (resp->done) {
+			case 0: /* request active */
+				*busy = true;
+				break;
+			case 1: /* request done; response ready to return */
+				resp->done = 2;	/* guard against other readers */
+				write_unlock_irqrestore(&sfp->rq_list_lock, iflags);
+				return resp;
+			case 2: /* response already being returned */
+				break;
+			}
 		}
 	}
 	write_unlock_irqrestore(&sfp->rq_list_lock, iflags);
@@ -2145,6 +2147,15 @@ sg_remove_request(Sg_fd * sfp, Sg_request * srp)
 		res = 1;
 	}
 	write_unlock_irqrestore(&sfp->rq_list_lock, iflags);
+
+	/*
+	 * If the device is detaching, wakeup any readers in case we just
+	 * removed the last response, which would leave nothing for them to
+	 * return other than -ENODEV.
+	 */
+	if (unlikely(atomic_read(&sfp->parentdp->detaching)))
+		wake_up_interruptible_all(&sfp->read_wait);
+
 	return res;
 }
 
diff --git linux-libre-4.19.255-gnu1/drivers/scsi/smartpqi/smartpqi_init.c linux-libre-4.19.256-gnu1/drivers/scsi/smartpqi/smartpqi_init.c
index 98f2d076f938..b86cc0342ae3 100644
--- linux-libre-4.19.255-gnu1/drivers/scsi/smartpqi/smartpqi_init.c
+++ linux-libre-4.19.256-gnu1/drivers/scsi/smartpqi/smartpqi_init.c
@@ -4638,10 +4638,10 @@ static int pqi_raid_submit_scsi_cmd_with_io_request(
 	}
 
 	switch (scmd->sc_data_direction) {
-	case DMA_TO_DEVICE:
+	case DMA_FROM_DEVICE:
 		request->data_direction = SOP_READ_FLAG;
 		break;
-	case DMA_FROM_DEVICE:
+	case DMA_TO_DEVICE:
 		request->data_direction = SOP_WRITE_FLAG;
 		break;
 	case DMA_NONE:
diff --git linux-libre-4.19.255-gnu1/drivers/soc/amlogic/meson-mx-socinfo.c linux-libre-4.19.256-gnu1/drivers/soc/amlogic/meson-mx-socinfo.c
index 78f0f1aeca57..92125dd65f33 100644
--- linux-libre-4.19.255-gnu1/drivers/soc/amlogic/meson-mx-socinfo.c
+++ linux-libre-4.19.256-gnu1/drivers/soc/amlogic/meson-mx-socinfo.c
@@ -126,6 +126,7 @@ static int __init meson_mx_socinfo_init(void)
 	np = of_find_matching_node(NULL, meson_mx_socinfo_analog_top_ids);
 	if (np) {
 		analog_top_regmap = syscon_node_to_regmap(np);
+		of_node_put(np);
 		if (IS_ERR(analog_top_regmap))
 			return PTR_ERR(analog_top_regmap);
 
diff --git linux-libre-4.19.255-gnu1/drivers/soc/fsl/guts.c linux-libre-4.19.256-gnu1/drivers/soc/fsl/guts.c
index 302e0c8d69d9..6693c32e7447 100644
--- linux-libre-4.19.255-gnu1/drivers/soc/fsl/guts.c
+++ linux-libre-4.19.256-gnu1/drivers/soc/fsl/guts.c
@@ -136,7 +136,7 @@ static int fsl_guts_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	struct resource *res;
 	const struct fsl_soc_die_attr *soc_die;
-	const char *machine;
+	const char *machine = NULL;
 	u32 svr;
 
 	/* Initialize guts */
diff --git linux-libre-4.19.255-gnu1/drivers/soundwire/bus_type.c linux-libre-4.19.256-gnu1/drivers/soundwire/bus_type.c
index 283b2832728e..414621f3c43c 100644
--- linux-libre-4.19.255-gnu1/drivers/soundwire/bus_type.c
+++ linux-libre-4.19.256-gnu1/drivers/soundwire/bus_type.c
@@ -154,12 +154,8 @@ int __sdw_register_driver(struct sdw_driver *drv, struct module *owner)
 
 	drv->driver.owner = owner;
 	drv->driver.probe = sdw_drv_probe;
-
-	if (drv->remove)
-		drv->driver.remove = sdw_drv_remove;
-
-	if (drv->shutdown)
-		drv->driver.shutdown = sdw_drv_shutdown;
+	drv->driver.remove = sdw_drv_remove;
+	drv->driver.shutdown = sdw_drv_shutdown;
 
 	return driver_register(&drv->driver);
 }
diff --git linux-libre-4.19.255-gnu1/drivers/staging/rtl8192u/r8192U.h linux-libre-4.19.256-gnu1/drivers/staging/rtl8192u/r8192U.h
index 94a148994069..2c3b33304173 100644
--- linux-libre-4.19.255-gnu1/drivers/staging/rtl8192u/r8192U.h
+++ linux-libre-4.19.256-gnu1/drivers/staging/rtl8192u/r8192U.h
@@ -1000,7 +1000,7 @@ typedef struct r8192_priv {
 	bool		bis_any_nonbepkts;
 	bool		bcurrent_turbo_EDCA;
 	bool		bis_cur_rdlstate;
-	struct timer_list fsync_timer;
+	struct delayed_work fsync_work;
 	bool bfsync_processing;	/* 500ms Fsync timer is active or not */
 	u32	rate_record;
 	u32	rateCountDiffRecord;
diff --git linux-libre-4.19.255-gnu1/drivers/staging/rtl8192u/r8192U_dm.c linux-libre-4.19.256-gnu1/drivers/staging/rtl8192u/r8192U_dm.c
index 5fb5f583f703..c24a29189545 100644
--- linux-libre-4.19.255-gnu1/drivers/staging/rtl8192u/r8192U_dm.c
+++ linux-libre-4.19.256-gnu1/drivers/staging/rtl8192u/r8192U_dm.c
@@ -2627,19 +2627,20 @@ static void dm_init_fsync(struct net_device *dev)
 	priv->ieee80211->fsync_seconddiff_ratethreshold = 200;
 	priv->ieee80211->fsync_state = Default_Fsync;
 	priv->framesyncMonitor = 1;	/* current default 0xc38 monitor on */
-	timer_setup(&priv->fsync_timer, dm_fsync_timer_callback, 0);
+	INIT_DELAYED_WORK(&priv->fsync_work, dm_fsync_work_callback);
 }
 
 static void dm_deInit_fsync(struct net_device *dev)
 {
 	struct r8192_priv *priv = ieee80211_priv(dev);
 
-	del_timer_sync(&priv->fsync_timer);
+	cancel_delayed_work_sync(&priv->fsync_work);
 }
 
-void dm_fsync_timer_callback(struct timer_list *t)
+void dm_fsync_work_callback(struct work_struct *work)
 {
-	struct r8192_priv *priv = from_timer(priv, t, fsync_timer);
+	struct r8192_priv *priv =
+	    container_of(work, struct r8192_priv, fsync_work.work);
 	struct net_device *dev = priv->ieee80211->dev;
 	u32 rate_index, rate_count = 0, rate_count_diff = 0;
 	bool		bSwitchFromCountDiff = false;
@@ -2706,17 +2707,16 @@ void dm_fsync_timer_callback(struct timer_list *t)
 			}
 		}
 		if (bDoubleTimeInterval) {
-			if (timer_pending(&priv->fsync_timer))
-				del_timer_sync(&priv->fsync_timer);
-			priv->fsync_timer.expires = jiffies +
-				msecs_to_jiffies(priv->ieee80211->fsync_time_interval*priv->ieee80211->fsync_multiple_timeinterval);
-			add_timer(&priv->fsync_timer);
+			cancel_delayed_work_sync(&priv->fsync_work);
+			schedule_delayed_work(&priv->fsync_work,
+					      msecs_to_jiffies(priv
+					      ->ieee80211->fsync_time_interval *
+					      priv->ieee80211->fsync_multiple_timeinterval));
 		} else {
-			if (timer_pending(&priv->fsync_timer))
-				del_timer_sync(&priv->fsync_timer);
-			priv->fsync_timer.expires = jiffies +
-				msecs_to_jiffies(priv->ieee80211->fsync_time_interval);
-			add_timer(&priv->fsync_timer);
+			cancel_delayed_work_sync(&priv->fsync_work);
+			schedule_delayed_work(&priv->fsync_work,
+					      msecs_to_jiffies(priv
+					      ->ieee80211->fsync_time_interval));
 		}
 	} else {
 		/* Let Register return to default value; */
@@ -2744,7 +2744,7 @@ static void dm_EndSWFsync(struct net_device *dev)
 	struct r8192_priv *priv = ieee80211_priv(dev);
 
 	RT_TRACE(COMP_HALDM, "%s\n", __func__);
-	del_timer_sync(&(priv->fsync_timer));
+	cancel_delayed_work_sync(&priv->fsync_work);
 
 	/* Let Register return to default value; */
 	if (priv->bswitch_fsync) {
@@ -2786,11 +2786,9 @@ static void dm_StartSWFsync(struct net_device *dev)
 		if (priv->ieee80211->fsync_rate_bitmap &  rateBitmap)
 			priv->rate_record += priv->stats.received_rate_histogram[1][rateIndex];
 	}
-	if (timer_pending(&priv->fsync_timer))
-		del_timer_sync(&priv->fsync_timer);
-	priv->fsync_timer.expires = jiffies +
-			msecs_to_jiffies(priv->ieee80211->fsync_time_interval);
-	add_timer(&priv->fsync_timer);
+	cancel_delayed_work_sync(&priv->fsync_work);
+	schedule_delayed_work(&priv->fsync_work,
+			      msecs_to_jiffies(priv->ieee80211->fsync_time_interval));
 
 	write_nic_dword(dev, rOFDM0_RxDetector2, 0x465c12cd);
 
diff --git linux-libre-4.19.255-gnu1/drivers/staging/rtl8192u/r8192U_dm.h linux-libre-4.19.256-gnu1/drivers/staging/rtl8192u/r8192U_dm.h
index 0de0332906bd..eeb03130de15 100644
--- linux-libre-4.19.255-gnu1/drivers/staging/rtl8192u/r8192U_dm.h
+++ linux-libre-4.19.256-gnu1/drivers/staging/rtl8192u/r8192U_dm.h
@@ -167,7 +167,7 @@ void dm_force_tx_fw_info(struct net_device *dev,
 void dm_init_edca_turbo(struct net_device *dev);
 void dm_rf_operation_test_callback(unsigned long data);
 void dm_rf_pathcheck_workitemcallback(struct work_struct *work);
-void dm_fsync_timer_callback(struct timer_list *t);
+void dm_fsync_work_callback(struct work_struct *work);
 void dm_cck_txpower_adjust(struct net_device *dev, bool  binch14);
 void dm_shadow_init(struct net_device *dev);
 void dm_initialize_txpower_tracking(struct net_device *dev);
diff --git linux-libre-4.19.255-gnu1/drivers/tee/tee_core.c linux-libre-4.19.256-gnu1/drivers/tee/tee_core.c
index d42fc2ae8592..e568cb4b2ffc 100644
--- linux-libre-4.19.255-gnu1/drivers/tee/tee_core.c
+++ linux-libre-4.19.256-gnu1/drivers/tee/tee_core.c
@@ -175,6 +175,10 @@ tee_ioctl_shm_register(struct tee_context *ctx,
 	if (data.flags)
 		return -EINVAL;
 
+	if (!access_ok(VERIFY_WRITE, (void __user *)(unsigned long)data.addr,
+		       data.length))
+		return -EFAULT;
+
 	shm = tee_shm_register(ctx, data.addr, data.length,
 			       TEE_SHM_DMA_BUF | TEE_SHM_USER_MAPPED);
 	if (IS_ERR(shm))
diff --git linux-libre-4.19.255-gnu1/drivers/thermal/thermal_sysfs.c linux-libre-4.19.256-gnu1/drivers/thermal/thermal_sysfs.c
index 4dce4a8f71ed..17b2361bc8f2 100644
--- linux-libre-4.19.255-gnu1/drivers/thermal/thermal_sysfs.c
+++ linux-libre-4.19.256-gnu1/drivers/thermal/thermal_sysfs.c
@@ -909,12 +909,13 @@ static const struct attribute_group cooling_device_stats_attr_group = {
 
 static void cooling_device_stats_setup(struct thermal_cooling_device *cdev)
 {
+	const struct attribute_group *stats_attr_group = NULL;
 	struct cooling_dev_stats *stats;
 	unsigned long states;
 	int var;
 
 	if (cdev->ops->get_max_state(cdev, &states))
-		return;
+		goto out;
 
 	states++; /* Total number of states is highest state + 1 */
 
@@ -924,7 +925,7 @@ static void cooling_device_stats_setup(struct thermal_cooling_device *cdev)
 
 	stats = kzalloc(var, GFP_KERNEL);
 	if (!stats)
-		return;
+		goto out;
 
 	stats->time_in_state = (ktime_t *)(stats + 1);
 	stats->trans_table = (unsigned int *)(stats->time_in_state + states);
@@ -934,9 +935,12 @@ static void cooling_device_stats_setup(struct thermal_cooling_device *cdev)
 
 	spin_lock_init(&stats->lock);
 
+	stats_attr_group = &cooling_device_stats_attr_group;
+
+out:
 	/* Fill the empty slot left in cooling_device_attr_groups */
 	var = ARRAY_SIZE(cooling_device_attr_groups) - 2;
-	cooling_device_attr_groups[var] = &cooling_device_stats_attr_group;
+	cooling_device_attr_groups[var] = stats_attr_group;
 }
 
 static void cooling_device_stats_destroy(struct thermal_cooling_device *cdev)
diff --git linux-libre-4.19.255-gnu1/drivers/tty/n_gsm.c linux-libre-4.19.256-gnu1/drivers/tty/n_gsm.c
index 5d2bb4d95186..f6d2be13b32e 100644
--- linux-libre-4.19.255-gnu1/drivers/tty/n_gsm.c
+++ linux-libre-4.19.256-gnu1/drivers/tty/n_gsm.c
@@ -410,6 +410,27 @@ static int gsm_read_ea(unsigned int *val, u8 c)
 	return c & EA;
 }
 
+/**
+ *	gsm_read_ea_val	-	read a value until EA
+ *	@val: variable holding value
+ *	@data: buffer of data
+ *	@dlen: length of data
+ *
+ *	Processes an EA value. Updates the passed variable and
+ *	returns the processed data length.
+ */
+static unsigned int gsm_read_ea_val(unsigned int *val, const u8 *data, int dlen)
+{
+	unsigned int len = 0;
+
+	for (; dlen > 0; dlen--) {
+		len++;
+		if (gsm_read_ea(val, *data++))
+			break;
+	}
+	return len;
+}
+
 /**
  *	gsm_encode_modem	-	encode modem data bits
  *	@dlci: DLCI to encode from
@@ -657,6 +678,37 @@ static struct gsm_msg *gsm_data_alloc(struct gsm_mux *gsm, u8 addr, int len,
 	return m;
 }
 
+/**
+ *	gsm_is_flow_ctrl_msg	-	checks if flow control message
+ *	@msg: message to check
+ *
+ *	Returns true if the given message is a flow control command of the
+ *	control channel. False is returned in any other case.
+ */
+static bool gsm_is_flow_ctrl_msg(struct gsm_msg *msg)
+{
+	unsigned int cmd;
+
+	if (msg->addr > 0)
+		return false;
+
+	switch (msg->ctrl & ~PF) {
+	case UI:
+	case UIH:
+		cmd = 0;
+		if (gsm_read_ea_val(&cmd, msg->data + 2, msg->len - 2) < 1)
+			break;
+		switch (cmd & ~PF) {
+		case CMD_FCOFF:
+		case CMD_FCON:
+			return true;
+		}
+		break;
+	}
+
+	return false;
+}
+
 /**
  *	gsm_data_kick		-	poke the queue
  *	@gsm: GSM Mux
@@ -675,7 +727,7 @@ static void gsm_data_kick(struct gsm_mux *gsm, struct gsm_dlci *dlci)
 	int len;
 
 	list_for_each_entry_safe(msg, nmsg, &gsm->tx_list, list) {
-		if (gsm->constipated && msg->addr)
+		if (gsm->constipated && !gsm_is_flow_ctrl_msg(msg))
 			continue;
 		if (gsm->encoding != 0) {
 			gsm->txframe[0] = GSM1_SOF;
@@ -1330,7 +1382,7 @@ static void gsm_control_retransmit(struct timer_list *t)
 	spin_lock_irqsave(&gsm->control_lock, flags);
 	ctrl = gsm->pending_cmd;
 	if (ctrl) {
-		if (gsm->cretries == 0) {
+		if (gsm->cretries == 0 || !gsm->dlci[0] || gsm->dlci[0]->dead) {
 			gsm->pending_cmd = NULL;
 			ctrl->error = -ETIMEDOUT;
 			ctrl->done = 1;
@@ -1482,8 +1534,8 @@ static void gsm_dlci_t1(struct timer_list *t)
 
 	switch (dlci->state) {
 	case DLCI_OPENING:
-		dlci->retries--;
 		if (dlci->retries) {
+			dlci->retries--;
 			gsm_command(dlci->gsm, dlci->addr, SABM|PF);
 			mod_timer(&dlci->t1, jiffies + gsm->t1 * HZ / 100);
 		} else if (!dlci->addr && gsm->control == (DM | PF)) {
@@ -1498,8 +1550,8 @@ static void gsm_dlci_t1(struct timer_list *t)
 
 		break;
 	case DLCI_CLOSING:
-		dlci->retries--;
 		if (dlci->retries) {
+			dlci->retries--;
 			gsm_command(dlci->gsm, dlci->addr, DISC|PF);
 			mod_timer(&dlci->t1, jiffies + gsm->t1 * HZ / 100);
 		} else
@@ -1840,7 +1892,7 @@ static void gsm_queue(struct gsm_mux *gsm)
 			goto invalid;
 #endif
 		if (dlci == NULL || dlci->state != DLCI_OPEN) {
-			gsm_command(gsm, address, DM|PF);
+			gsm_response(gsm, address, DM|PF);
 			return;
 		}
 		dlci->data(dlci, gsm->buf, gsm->len);
@@ -2467,11 +2519,24 @@ static ssize_t gsmld_read(struct tty_struct *tty, struct file *file,
 static ssize_t gsmld_write(struct tty_struct *tty, struct file *file,
 			   const unsigned char *buf, size_t nr)
 {
-	int space = tty_write_room(tty);
+	struct gsm_mux *gsm = tty->disc_data;
+	unsigned long flags;
+	int space;
+	int ret;
+
+	if (!gsm)
+		return -ENODEV;
+
+	ret = -ENOBUFS;
+	spin_lock_irqsave(&gsm->tx_lock, flags);
+	space = tty_write_room(tty);
 	if (space >= nr)
-		return tty->ops->write(tty, buf, nr);
-	set_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);
-	return -ENOBUFS;
+		ret = tty->ops->write(tty, buf, nr);
+	else
+		set_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);
+	spin_unlock_irqrestore(&gsm->tx_lock, flags);
+
+	return ret;
 }
 
 /**
@@ -2496,12 +2561,15 @@ static __poll_t gsmld_poll(struct tty_struct *tty, struct file *file,
 
 	poll_wait(file, &tty->read_wait, wait);
 	poll_wait(file, &tty->write_wait, wait);
+
+	if (gsm->dead)
+		mask |= EPOLLHUP;
 	if (tty_hung_up_p(file))
 		mask |= EPOLLHUP;
+	if (test_bit(TTY_OTHER_CLOSED, &tty->flags))
+		mask |= EPOLLHUP;
 	if (!tty_is_writelocked(tty) && tty_write_room(tty) > 0)
 		mask |= EPOLLOUT | EPOLLWRNORM;
-	if (gsm->dead)
-		mask |= EPOLLHUP;
 	return mask;
 }
 
diff --git linux-libre-4.19.255-gnu1/drivers/tty/serial/8250/8250_dw.c linux-libre-4.19.256-gnu1/drivers/tty/serial/8250/8250_dw.c
index c73d0eddd9b8..cc9d1f416db8 100644
--- linux-libre-4.19.255-gnu1/drivers/tty/serial/8250/8250_dw.c
+++ linux-libre-4.19.256-gnu1/drivers/tty/serial/8250/8250_dw.c
@@ -140,12 +140,15 @@ static void dw8250_check_lcr(struct uart_port *p, int value)
 /* Returns once the transmitter is empty or we run out of retries */
 static void dw8250_tx_wait_empty(struct uart_port *p)
 {
+	struct uart_8250_port *up = up_to_u8250p(p);
 	unsigned int tries = 20000;
 	unsigned int delay_threshold = tries - 1000;
 	unsigned int lsr;
 
 	while (tries--) {
 		lsr = readb (p->membase + (UART_LSR << p->regshift));
+		up->lsr_saved_flags |= lsr & LSR_SAVE_FLAGS;
+
 		if (lsr & UART_LSR_TEMT)
 			break;
 
diff --git linux-libre-4.19.255-gnu1/drivers/tty/serial/mvebu-uart.c linux-libre-4.19.256-gnu1/drivers/tty/serial/mvebu-uart.c
index 6449c156c4d6..70f74ebc25dc 100644
--- linux-libre-4.19.255-gnu1/drivers/tty/serial/mvebu-uart.c
+++ linux-libre-4.19.256-gnu1/drivers/tty/serial/mvebu-uart.c
@@ -237,6 +237,7 @@ static void mvebu_uart_rx_chars(struct uart_port *port, unsigned int status)
 	struct tty_port *tport = &port->state->port;
 	unsigned char ch = 0;
 	char flag = 0;
+	int ret;
 
 	do {
 		if (status & STAT_RX_RDY(port)) {
@@ -249,6 +250,16 @@ static void mvebu_uart_rx_chars(struct uart_port *port, unsigned int status)
 				port->icount.parity++;
 		}
 
+		/*
+		 * For UART2, error bits are not cleared on buffer read.
+		 * This causes interrupt loop and system hang.
+		 */
+		if (IS_EXTENDED(port) && (status & STAT_BRK_ERR)) {
+			ret = readl(port->membase + UART_STAT);
+			ret |= STAT_BRK_ERR;
+			writel(ret, port->membase + UART_STAT);
+		}
+
 		if (status & STAT_BRK_DET) {
 			port->icount.brk++;
 			status &= ~(STAT_FRM_ERR | STAT_PAR_ERR);
diff --git linux-libre-4.19.255-gnu1/drivers/tty/serial/ucc_uart.c linux-libre-4.19.256-gnu1/drivers/tty/serial/ucc_uart.c
index 2fc3994bb7fe..cce84b099a17 100644
--- linux-libre-4.19.255-gnu1/drivers/tty/serial/ucc_uart.c
+++ linux-libre-4.19.256-gnu1/drivers/tty/serial/ucc_uart.c
@@ -1141,6 +1141,8 @@ static unsigned int soc_info(unsigned int *rev_h, unsigned int *rev_l)
 		/* No compatible property, so try the name. */
 		soc_string = np->name;
 
+	of_node_put(np);
+
 	/* Extract the SOC number from the "PowerPC," string */
 	if ((sscanf(soc_string, "PowerPC,%u", &soc) != 1) || !soc)
 		return 0;
diff --git linux-libre-4.19.255-gnu1/drivers/tty/vt/vt.c linux-libre-4.19.256-gnu1/drivers/tty/vt/vt.c
index 20565603a365..198bf54568cc 100644
--- linux-libre-4.19.255-gnu1/drivers/tty/vt/vt.c
+++ linux-libre-4.19.256-gnu1/drivers/tty/vt/vt.c
@@ -351,7 +351,7 @@ static struct uni_screen *vc_uniscr_alloc(unsigned int cols, unsigned int rows)
 	/* allocate everything in one go */
 	memsize = cols * rows * sizeof(char32_t);
 	memsize += rows * sizeof(char32_t *);
-	p = vmalloc(memsize);
+	p = vzalloc(memsize);
 	if (!p)
 		return NULL;
 
diff --git linux-libre-4.19.255-gnu1/drivers/usb/core/hcd.c linux-libre-4.19.256-gnu1/drivers/usb/core/hcd.c
index df661460e9f9..59d5d506d73c 100644
--- linux-libre-4.19.255-gnu1/drivers/usb/core/hcd.c
+++ linux-libre-4.19.256-gnu1/drivers/usb/core/hcd.c
@@ -1805,7 +1805,6 @@ static void usb_giveback_urb_bh(unsigned long param)
 
 	spin_lock_irq(&bh->lock);
 	bh->running = true;
- restart:
 	list_replace_init(&bh->head, &local_list);
 	spin_unlock_irq(&bh->lock);
 
@@ -1819,10 +1818,17 @@ static void usb_giveback_urb_bh(unsigned long param)
 		bh->completing_ep = NULL;
 	}
 
-	/* check if there are new URBs to giveback */
+	/*
+	 * giveback new URBs next time to prevent this function
+	 * from not exiting for a long time.
+	 */
 	spin_lock_irq(&bh->lock);
-	if (!list_empty(&bh->head))
-		goto restart;
+	if (!list_empty(&bh->head)) {
+		if (bh->high_prio)
+			tasklet_hi_schedule(&bh->bh);
+		else
+			tasklet_schedule(&bh->bh);
+	}
 	bh->running = false;
 	spin_unlock_irq(&bh->lock);
 }
@@ -1847,7 +1853,7 @@ static void usb_giveback_urb_bh(unsigned long param)
 void usb_hcd_giveback_urb(struct usb_hcd *hcd, struct urb *urb, int status)
 {
 	struct giveback_urb_bh *bh;
-	bool running, high_prio_bh;
+	bool running;
 
 	/* pass status to tasklet via unlinked */
 	if (likely(!urb->unlinked))
@@ -1858,13 +1864,10 @@ void usb_hcd_giveback_urb(struct usb_hcd *hcd, struct urb *urb, int status)
 		return;
 	}
 
-	if (usb_pipeisoc(urb->pipe) || usb_pipeint(urb->pipe)) {
+	if (usb_pipeisoc(urb->pipe) || usb_pipeint(urb->pipe))
 		bh = &hcd->high_prio_bh;
-		high_prio_bh = true;
-	} else {
+	else
 		bh = &hcd->low_prio_bh;
-		high_prio_bh = false;
-	}
 
 	spin_lock(&bh->lock);
 	list_add_tail(&urb->urb_list, &bh->head);
@@ -1873,7 +1876,7 @@ void usb_hcd_giveback_urb(struct usb_hcd *hcd, struct urb *urb, int status)
 
 	if (running)
 		;
-	else if (high_prio_bh)
+	else if (bh->high_prio)
 		tasklet_hi_schedule(&bh->bh);
 	else
 		tasklet_schedule(&bh->bh);
@@ -2881,6 +2884,7 @@ int usb_add_hcd(struct usb_hcd *hcd,
 
 	/* initialize tasklets */
 	init_giveback_urb_bh(&hcd->high_prio_bh);
+	hcd->high_prio_bh.high_prio = true;
 	init_giveback_urb_bh(&hcd->low_prio_bh);
 
 	/* enable irqs just before we start the controller,
diff --git linux-libre-4.19.255-gnu1/drivers/usb/gadget/legacy/inode.c linux-libre-4.19.256-gnu1/drivers/usb/gadget/legacy/inode.c
index 3ebcbd199a79..b0a2b8805f41 100644
--- linux-libre-4.19.255-gnu1/drivers/usb/gadget/legacy/inode.c
+++ linux-libre-4.19.256-gnu1/drivers/usb/gadget/legacy/inode.c
@@ -361,6 +361,7 @@ ep_io (struct ep_data *epdata, void *buf, unsigned len)
 				spin_unlock_irq (&epdata->dev->lock);
 
 				DBG (epdata->dev, "endpoint gone\n");
+				wait_for_completion(&done);
 				epdata->status = -ENODEV;
 			}
 		}
diff --git linux-libre-4.19.255-gnu1/drivers/usb/gadget/udc/Kconfig linux-libre-4.19.256-gnu1/drivers/usb/gadget/udc/Kconfig
index d83d93c6ef9e..33b5648b2819 100644
--- linux-libre-4.19.255-gnu1/drivers/usb/gadget/udc/Kconfig
+++ linux-libre-4.19.256-gnu1/drivers/usb/gadget/udc/Kconfig
@@ -309,7 +309,7 @@ source "drivers/usb/gadget/udc/bdc/Kconfig"
 
 config USB_AMD5536UDC
 	tristate "AMD5536 UDC"
-	depends on USB_PCI
+	depends on USB_PCI && HAS_DMA
 	select USB_SNP_CORE
 	help
 	   The AMD5536 UDC is part of the AMD Geode CS5536, an x86 southbridge.
diff --git linux-libre-4.19.255-gnu1/drivers/usb/host/ehci-ppc-of.c linux-libre-4.19.256-gnu1/drivers/usb/host/ehci-ppc-of.c
index 576f7d79ad4e..d1dc644b215c 100644
--- linux-libre-4.19.255-gnu1/drivers/usb/host/ehci-ppc-of.c
+++ linux-libre-4.19.256-gnu1/drivers/usb/host/ehci-ppc-of.c
@@ -148,6 +148,7 @@ static int ehci_hcd_ppc_of_probe(struct platform_device *op)
 		} else {
 			ehci->has_amcc_usb23 = 1;
 		}
+		of_node_put(np);
 	}
 
 	if (of_get_property(dn, "big-endian", NULL)) {
diff --git linux-libre-4.19.255-gnu1/drivers/usb/host/ohci-nxp.c linux-libre-4.19.256-gnu1/drivers/usb/host/ohci-nxp.c
index f5f532601092..a964a93ff35b 100644
--- linux-libre-4.19.255-gnu1/drivers/usb/host/ohci-nxp.c
+++ linux-libre-4.19.256-gnu1/drivers/usb/host/ohci-nxp.c
@@ -153,6 +153,7 @@ static int ohci_hcd_nxp_probe(struct platform_device *pdev)
 	}
 
 	isp1301_i2c_client = isp1301_get_client(isp1301_node);
+	of_node_put(isp1301_node);
 	if (!isp1301_i2c_client)
 		return -EPROBE_DEFER;
 
diff --git linux-libre-4.19.255-gnu1/drivers/usb/host/ohci-ppc-of.c linux-libre-4.19.256-gnu1/drivers/usb/host/ohci-ppc-of.c
index 76a9b40b08f1..96c5c7655283 100644
--- linux-libre-4.19.255-gnu1/drivers/usb/host/ohci-ppc-of.c
+++ linux-libre-4.19.256-gnu1/drivers/usb/host/ohci-ppc-of.c
@@ -169,6 +169,7 @@ static int ohci_hcd_ppc_of_probe(struct platform_device *op)
 				release_mem_region(res.start, 0x4);
 		} else
 			pr_debug("%s: cannot get ehci offset from fdt\n", __FILE__);
+		of_node_put(np);
 	}
 
 	irq_dispose_mapping(irq);
diff --git linux-libre-4.19.255-gnu1/drivers/usb/renesas_usbhs/rza.c linux-libre-4.19.256-gnu1/drivers/usb/renesas_usbhs/rza.c
index 5b287257ec11..04eeaf6a028a 100644
--- linux-libre-4.19.255-gnu1/drivers/usb/renesas_usbhs/rza.c
+++ linux-libre-4.19.256-gnu1/drivers/usb/renesas_usbhs/rza.c
@@ -23,6 +23,10 @@ static int usbhs_rza1_hardware_init(struct platform_device *pdev)
 	extal_clk = of_find_node_by_name(NULL, "extal");
 	of_property_read_u32(usb_x1_clk, "clock-frequency", &freq_usb);
 	of_property_read_u32(extal_clk, "clock-frequency", &freq_extal);
+
+	of_node_put(usb_x1_clk);
+	of_node_put(extal_clk);
+
 	if (freq_usb == 0) {
 		if (freq_extal == 12000000) {
 			/* Select 12MHz XTAL */
diff --git linux-libre-4.19.255-gnu1/drivers/usb/serial/sierra.c linux-libre-4.19.256-gnu1/drivers/usb/serial/sierra.c
index a43263a0edd8..891e52bc5002 100644
--- linux-libre-4.19.255-gnu1/drivers/usb/serial/sierra.c
+++ linux-libre-4.19.256-gnu1/drivers/usb/serial/sierra.c
@@ -757,7 +757,8 @@ static void sierra_close(struct usb_serial_port *port)
 
 	/*
 	 * Need to take susp_lock to make sure port is not already being
-	 * resumed, but no need to hold it due to initialized
+	 * resumed, but no need to hold it due to the tty-port initialized
+	 * flag.
 	 */
 	spin_lock_irq(&intfdata->susp_lock);
 	if (--intfdata->open_ports == 0)
diff --git linux-libre-4.19.255-gnu1/drivers/usb/serial/usb-serial.c linux-libre-4.19.256-gnu1/drivers/usb/serial/usb-serial.c
index b1f0aa12ba39..eb4f20651186 100644
--- linux-libre-4.19.255-gnu1/drivers/usb/serial/usb-serial.c
+++ linux-libre-4.19.256-gnu1/drivers/usb/serial/usb-serial.c
@@ -251,7 +251,7 @@ static int serial_open(struct tty_struct *tty, struct file *filp)
  *
  * Shut down a USB serial port. Serialized against activate by the
  * tport mutex and kept to matching open/close pairs
- * of calls by the initialized flag.
+ * of calls by the tty-port initialized flag.
  *
  * Not called if tty is console.
  */
diff --git linux-libre-4.19.255-gnu1/drivers/usb/serial/usb_wwan.c linux-libre-4.19.256-gnu1/drivers/usb/serial/usb_wwan.c
index 997ff88ec04b..2ebf0842fa43 100644
--- linux-libre-4.19.255-gnu1/drivers/usb/serial/usb_wwan.c
+++ linux-libre-4.19.256-gnu1/drivers/usb/serial/usb_wwan.c
@@ -463,7 +463,8 @@ void usb_wwan_close(struct usb_serial_port *port)
 
 	/*
 	 * Need to take susp_lock to make sure port is not already being
-	 * resumed, but no need to hold it due to initialized
+	 * resumed, but no need to hold it due to the tty-port initialized
+	 * flag.
 	 */
 	spin_lock_irq(&intfdata->susp_lock);
 	if (--intfdata->open_ports == 0)
diff --git linux-libre-4.19.255-gnu1/drivers/vfio/vfio.c linux-libre-4.19.256-gnu1/drivers/vfio/vfio.c
index 7a386fb30bf1..0d146b45e0b4 100644
--- linux-libre-4.19.255-gnu1/drivers/vfio/vfio.c
+++ linux-libre-4.19.256-gnu1/drivers/vfio/vfio.c
@@ -1808,6 +1808,7 @@ struct vfio_info_cap_header *vfio_info_cap_add(struct vfio_info_cap *caps,
 	buf = krealloc(caps->buf, caps->size + size, GFP_KERNEL);
 	if (!buf) {
 		kfree(caps->buf);
+		caps->buf = NULL;
 		caps->size = 0;
 		return ERR_PTR(-ENOMEM);
 	}
diff --git linux-libre-4.19.255-gnu1/drivers/video/fbdev/amba-clcd.c linux-libre-4.19.256-gnu1/drivers/video/fbdev/amba-clcd.c
index 549f78e77255..81f64ef6fa4c 100644
--- linux-libre-4.19.255-gnu1/drivers/video/fbdev/amba-clcd.c
+++ linux-libre-4.19.256-gnu1/drivers/video/fbdev/amba-clcd.c
@@ -772,8 +772,10 @@ static int clcdfb_of_init_display(struct clcd_fb *fb)
 		return -ENODEV;
 
 	panel = of_graph_get_remote_port_parent(endpoint);
-	if (!panel)
-		return -ENODEV;
+	if (!panel) {
+		err = -ENODEV;
+		goto out_endpoint_put;
+	}
 
 	if (fb->vendor->init_panel) {
 		err = fb->vendor->init_panel(fb, panel);
@@ -783,11 +785,11 @@ static int clcdfb_of_init_display(struct clcd_fb *fb)
 
 	err = clcdfb_of_get_backlight(panel, fb->panel);
 	if (err)
-		return err;
+		goto out_panel_put;
 
 	err = clcdfb_of_get_mode(&fb->dev->dev, panel, fb->panel);
 	if (err)
-		return err;
+		goto out_panel_put;
 
 	err = of_property_read_u32(fb->dev->dev.of_node, "max-memory-bandwidth",
 			&max_bandwidth);
@@ -816,11 +818,21 @@ static int clcdfb_of_init_display(struct clcd_fb *fb)
 
 	if (of_property_read_u32_array(endpoint,
 			"arm,pl11x,tft-r0g0b0-pads",
-			tft_r0b0g0, ARRAY_SIZE(tft_r0b0g0)) != 0)
-		return -ENOENT;
+			tft_r0b0g0, ARRAY_SIZE(tft_r0b0g0)) != 0) {
+		err = -ENOENT;
+		goto out_panel_put;
+	}
+
+	of_node_put(panel);
+	of_node_put(endpoint);
 
 	return clcdfb_of_init_tft_panel(fb, tft_r0b0g0[0],
 					tft_r0b0g0[1],  tft_r0b0g0[2]);
+out_panel_put:
+	of_node_put(panel);
+out_endpoint_put:
+	of_node_put(endpoint);
+	return err;
 }
 
 static int clcdfb_of_vram_setup(struct clcd_fb *fb)
diff --git linux-libre-4.19.255-gnu1/drivers/video/fbdev/arkfb.c linux-libre-4.19.256-gnu1/drivers/video/fbdev/arkfb.c
index 13ba371e70aa..f7920987dd24 100644
--- linux-libre-4.19.255-gnu1/drivers/video/fbdev/arkfb.c
+++ linux-libre-4.19.256-gnu1/drivers/video/fbdev/arkfb.c
@@ -778,7 +778,12 @@ static int arkfb_set_par(struct fb_info *info)
 		return -EINVAL;
 	}
 
-	ark_set_pixclock(info, (hdiv * info->var.pixclock) / hmul);
+	value = (hdiv * info->var.pixclock) / hmul;
+	if (!value) {
+		fb_dbg(info, "invalid pixclock\n");
+		value = 1;
+	}
+	ark_set_pixclock(info, value);
 	svga_set_timings(par->state.vgabase, &ark_timing_regs, &(info->var), hmul, hdiv,
 			 (info->var.vmode & FB_VMODE_DOUBLE)     ? 2 : 1,
 			 (info->var.vmode & FB_VMODE_INTERLACED) ? 2 : 1,
@@ -789,6 +794,8 @@ static int arkfb_set_par(struct fb_info *info)
 	value = ((value * hmul / hdiv) / 8) - 5;
 	vga_wcrt(par->state.vgabase, 0x42, (value + 1) / 2);
 
+	if (screen_size > info->screen_size)
+		screen_size = info->screen_size;
 	memset_io(info->screen_base, 0x00, screen_size);
 	/* Device and screen back on */
 	svga_wcrt_mask(par->state.vgabase, 0x17, 0x80, 0x80);
diff --git linux-libre-4.19.255-gnu1/drivers/video/fbdev/core/fbcon.c linux-libre-4.19.256-gnu1/drivers/video/fbdev/core/fbcon.c
index 17ed20a73c2d..417f4bcc1182 100644
--- linux-libre-4.19.255-gnu1/drivers/video/fbdev/core/fbcon.c
+++ linux-libre-4.19.256-gnu1/drivers/video/fbdev/core/fbcon.c
@@ -103,8 +103,8 @@ static int logo_lines;
    enums.  */
 static int logo_shown = FBCON_LOGO_CANSHOW;
 /* console mappings */
-static int first_fb_vc;
-static int last_fb_vc = MAX_NR_CONSOLES - 1;
+static unsigned int first_fb_vc;
+static unsigned int last_fb_vc = MAX_NR_CONSOLES - 1;
 static int fbcon_is_default = 1; 
 static int fbcon_has_exited;
 static int primary_device = -1;
@@ -456,10 +456,12 @@ static int __init fb_console_setup(char *this_opt)
 			options += 3;
 			if (*options)
 				first_fb_vc = simple_strtoul(options, &options, 10) - 1;
-			if (first_fb_vc < 0)
+			if (first_fb_vc >= MAX_NR_CONSOLES)
 				first_fb_vc = 0;
 			if (*options++ == '-')
 				last_fb_vc = simple_strtoul(options, &options, 10) - 1;
+			if (last_fb_vc < first_fb_vc || last_fb_vc >= MAX_NR_CONSOLES)
+				last_fb_vc = MAX_NR_CONSOLES - 1;
 			fbcon_is_default = 0; 
 			continue;
 		}
diff --git linux-libre-4.19.255-gnu1/drivers/video/fbdev/i740fb.c linux-libre-4.19.256-gnu1/drivers/video/fbdev/i740fb.c
index f6d7b04d6dff..bdbafff4529f 100644
--- linux-libre-4.19.255-gnu1/drivers/video/fbdev/i740fb.c
+++ linux-libre-4.19.256-gnu1/drivers/video/fbdev/i740fb.c
@@ -399,7 +399,7 @@ static int i740fb_decode_var(const struct fb_var_screeninfo *var,
 	u32 xres, right, hslen, left, xtotal;
 	u32 yres, lower, vslen, upper, ytotal;
 	u32 vxres, xoffset, vyres, yoffset;
-	u32 bpp, base, dacspeed24, mem;
+	u32 bpp, base, dacspeed24, mem, freq;
 	u8 r7;
 	int i;
 
@@ -642,7 +642,12 @@ static int i740fb_decode_var(const struct fb_var_screeninfo *var,
 	par->atc[VGA_ATC_OVERSCAN] = 0;
 
 	/* Calculate VCLK that most closely matches the requested dot clock */
-	i740_calc_vclk((((u32)1e9) / var->pixclock) * (u32)(1e3), par);
+	freq = (((u32)1e9) / var->pixclock) * (u32)(1e3);
+	if (freq < I740_RFREQ_FIX) {
+		fb_dbg(info, "invalid pixclock\n");
+		freq = I740_RFREQ_FIX;
+	}
+	i740_calc_vclk(freq, par);
 
 	/* Since we program the clocks ourselves, always use VCLK2. */
 	par->misc |= 0x0C;
diff --git linux-libre-4.19.255-gnu1/drivers/video/fbdev/s3fb.c linux-libre-4.19.256-gnu1/drivers/video/fbdev/s3fb.c
index d63f23e26f7d..b17b806b4187 100644
--- linux-libre-4.19.255-gnu1/drivers/video/fbdev/s3fb.c
+++ linux-libre-4.19.256-gnu1/drivers/video/fbdev/s3fb.c
@@ -902,6 +902,8 @@ static int s3fb_set_par(struct fb_info *info)
 	value = clamp((htotal + hsstart + 1) / 2 + 2, hsstart + 4, htotal + 1);
 	svga_wcrt_multi(par->state.vgabase, s3_dtpc_regs, value);
 
+	if (screen_size > info->screen_size)
+		screen_size = info->screen_size;
 	memset_io(info->screen_base, 0x00, screen_size);
 	/* Device and screen back on */
 	svga_wcrt_mask(par->state.vgabase, 0x17, 0x80, 0x80);
diff --git linux-libre-4.19.255-gnu1/drivers/video/fbdev/sis/init.c linux-libre-4.19.256-gnu1/drivers/video/fbdev/sis/init.c
index fde27feae5d0..d6b2ce95a859 100644
--- linux-libre-4.19.255-gnu1/drivers/video/fbdev/sis/init.c
+++ linux-libre-4.19.256-gnu1/drivers/video/fbdev/sis/init.c
@@ -355,12 +355,12 @@ SiS_GetModeID(int VGAEngine, unsigned int VBFlags, int HDisplay, int VDisplay,
 		}
 		break;
 	case 400:
-		if((!(VBFlags & CRT1_LCDA)) || ((LCDwidth >= 800) && (LCDwidth >= 600))) {
+		if((!(VBFlags & CRT1_LCDA)) || ((LCDwidth >= 800) && (LCDheight >= 600))) {
 			if(VDisplay == 300) ModeIndex = ModeIndex_400x300[Depth];
 		}
 		break;
 	case 512:
-		if((!(VBFlags & CRT1_LCDA)) || ((LCDwidth >= 1024) && (LCDwidth >= 768))) {
+		if((!(VBFlags & CRT1_LCDA)) || ((LCDwidth >= 1024) && (LCDheight >= 768))) {
 			if(VDisplay == 384) ModeIndex = ModeIndex_512x384[Depth];
 		}
 		break;
diff --git linux-libre-4.19.255-gnu1/drivers/video/fbdev/vt8623fb.c linux-libre-4.19.256-gnu1/drivers/video/fbdev/vt8623fb.c
index 5cac871db3ee..cbae9c510092 100644
--- linux-libre-4.19.255-gnu1/drivers/video/fbdev/vt8623fb.c
+++ linux-libre-4.19.256-gnu1/drivers/video/fbdev/vt8623fb.c
@@ -504,6 +504,8 @@ static int vt8623fb_set_par(struct fb_info *info)
 			 (info->var.vmode & FB_VMODE_DOUBLE) ? 2 : 1, 1,
 			 1, info->node);
 
+	if (screen_size > info->screen_size)
+		screen_size = info->screen_size;
 	memset_io(info->screen_base, 0x00, screen_size);
 
 	/* Device and screen back on */
diff --git linux-libre-4.19.255-gnu1/drivers/virt/vboxguest/vboxguest_linux.c linux-libre-4.19.256-gnu1/drivers/virt/vboxguest/vboxguest_linux.c
index 94e055ee7ad6..aa65b20883ef 100644
--- linux-libre-4.19.255-gnu1/drivers/virt/vboxguest/vboxguest_linux.c
+++ linux-libre-4.19.256-gnu1/drivers/virt/vboxguest/vboxguest_linux.c
@@ -341,8 +341,8 @@ static int vbg_pci_probe(struct pci_dev *pci, const struct pci_device_id *id)
 		goto err_vbg_core_exit;
 	}
 
-	ret = devm_request_irq(dev, pci->irq, vbg_core_isr, IRQF_SHARED,
-			       DEVICE_NAME, gdev);
+	ret = request_irq(pci->irq, vbg_core_isr, IRQF_SHARED, DEVICE_NAME,
+			  gdev);
 	if (ret) {
 		vbg_err("vboxguest: Error requesting irq: %d\n", ret);
 		goto err_vbg_core_exit;
@@ -352,7 +352,7 @@ static int vbg_pci_probe(struct pci_dev *pci, const struct pci_device_id *id)
 	if (ret) {
 		vbg_err("vboxguest: Error misc_register %s failed: %d\n",
 			DEVICE_NAME, ret);
-		goto err_vbg_core_exit;
+		goto err_free_irq;
 	}
 
 	ret = misc_register(&gdev->misc_device_user);
@@ -388,6 +388,8 @@ err_unregister_misc_device_user:
 	misc_deregister(&gdev->misc_device_user);
 err_unregister_misc_device:
 	misc_deregister(&gdev->misc_device);
+err_free_irq:
+	free_irq(pci->irq, gdev);
 err_vbg_core_exit:
 	vbg_core_exit(gdev);
 err_disable_pcidev:
@@ -404,6 +406,7 @@ static void vbg_pci_remove(struct pci_dev *pci)
 	vbg_gdev = NULL;
 	mutex_unlock(&vbg_gdev_mutex);
 
+	free_irq(pci->irq, gdev);
 	device_remove_file(gdev->dev, &dev_attr_host_features);
 	device_remove_file(gdev->dev, &dev_attr_host_version);
 	misc_deregister(&gdev->misc_device_user);
diff --git linux-libre-4.19.255-gnu1/drivers/xen/xenbus/xenbus_dev_frontend.c linux-libre-4.19.256-gnu1/drivers/xen/xenbus/xenbus_dev_frontend.c
index 454c6826abdb..1c1dadfd4e4d 100644
--- linux-libre-4.19.255-gnu1/drivers/xen/xenbus/xenbus_dev_frontend.c
+++ linux-libre-4.19.256-gnu1/drivers/xen/xenbus/xenbus_dev_frontend.c
@@ -128,7 +128,7 @@ static ssize_t xenbus_file_read(struct file *filp,
 {
 	struct xenbus_file_priv *u = filp->private_data;
 	struct read_buffer *rb;
-	unsigned i;
+	ssize_t i;
 	int ret;
 
 	mutex_lock(&u->reply_mutex);
@@ -148,7 +148,7 @@ again:
 	rb = list_entry(u->read_buffers.next, struct read_buffer, list);
 	i = 0;
 	while (i < len) {
-		unsigned sz = min((unsigned)len - i, rb->len - rb->cons);
+		size_t sz = min_t(size_t, len - i, rb->len - rb->cons);
 
 		ret = copy_to_user(ubuf + i, &rb->msg[rb->cons], sz);
 
diff --git linux-libre-4.19.255-gnu1/fs/attr.c linux-libre-4.19.256-gnu1/fs/attr.c
index d22e8187477f..4d2541c1e68c 100644
--- linux-libre-4.19.255-gnu1/fs/attr.c
+++ linux-libre-4.19.256-gnu1/fs/attr.c
@@ -134,6 +134,8 @@ EXPORT_SYMBOL(setattr_prepare);
  */
 int inode_newsize_ok(const struct inode *inode, loff_t offset)
 {
+	if (offset < 0)
+		return -EINVAL;
 	if (inode->i_size < offset) {
 		unsigned long limit;
 
diff --git linux-libre-4.19.255-gnu1/fs/btrfs/disk-io.c linux-libre-4.19.256-gnu1/fs/btrfs/disk-io.c
index c9fd018dcf76..98f87cc47433 100644
--- linux-libre-4.19.255-gnu1/fs/btrfs/disk-io.c
+++ linux-libre-4.19.256-gnu1/fs/btrfs/disk-io.c
@@ -2920,6 +2920,20 @@ int open_ctree(struct super_block *sb,
 		err = -EINVAL;
 		goto fail_alloc;
 	}
+	/*
+	 * We have unsupported RO compat features, although RO mounted, we
+	 * should not cause any metadata write, including log replay.
+	 * Or we could screw up whatever the new feature requires.
+	 */
+	if (unlikely(features && btrfs_super_log_root(disk_super) &&
+		     !btrfs_test_opt(fs_info, NOLOGREPLAY))) {
+		btrfs_err(fs_info,
+"cannot replay dirty log with unsupported compat_ro features (0x%llx), try rescue=nologreplay",
+			  features);
+		err = -EINVAL;
+		goto fail_alloc;
+	}
+
 
 	ret = btrfs_init_workqueues(fs_info, fs_devices);
 	if (ret) {
diff --git linux-libre-4.19.255-gnu1/fs/btrfs/raid56.c linux-libre-4.19.256-gnu1/fs/btrfs/raid56.c
index a91f74cf5cd1..0ce7ab8f875a 100644
--- linux-libre-4.19.255-gnu1/fs/btrfs/raid56.c
+++ linux-libre-4.19.256-gnu1/fs/btrfs/raid56.c
@@ -318,6 +318,9 @@ static void merge_rbio(struct btrfs_raid_bio *dest,
 {
 	bio_list_merge(&dest->bio_list, &victim->bio_list);
 	dest->bio_list_bytes += victim->bio_list_bytes;
+	/* Also inherit the bitmaps from @victim. */
+	bitmap_or(dest->dbitmap, victim->dbitmap, dest->dbitmap,
+		  dest->stripe_npages);
 	dest->generic_bio_cnt += victim->generic_bio_cnt;
 	bio_list_init(&victim->bio_list);
 }
@@ -862,6 +865,12 @@ static void rbio_orig_end_io(struct btrfs_raid_bio *rbio, blk_status_t err)
 
 	if (rbio->generic_bio_cnt)
 		btrfs_bio_counter_sub(rbio->fs_info, rbio->generic_bio_cnt);
+	/*
+	 * Clear the data bitmap, as the rbio may be cached for later usage.
+	 * do this before before unlock_stripe() so there will be no new bio
+	 * for this bio.
+	 */
+	bitmap_clear(rbio->dbitmap, 0, rbio->stripe_npages);
 
 	/*
 	 * At this moment, rbio->bio_list is empty, however since rbio does not
@@ -1196,6 +1205,9 @@ static noinline void finish_rmw(struct btrfs_raid_bio *rbio)
 	else
 		BUG();
 
+	/* We should have at least one data sector. */
+	ASSERT(bitmap_weight(rbio->dbitmap, rbio->stripe_npages));
+
 	/* at this point we either have a full stripe,
 	 * or we've read the full stripe from the drive.
 	 * recalculate the parity and write the new results.
@@ -1269,6 +1281,11 @@ static noinline void finish_rmw(struct btrfs_raid_bio *rbio)
 	for (stripe = 0; stripe < rbio->real_stripes; stripe++) {
 		for (pagenr = 0; pagenr < rbio->stripe_npages; pagenr++) {
 			struct page *page;
+
+			/* This vertical stripe has no data, skip it. */
+			if (!test_bit(pagenr, rbio->dbitmap))
+				continue;
+
 			if (stripe < rbio->nr_data) {
 				page = page_in_rbio(rbio, stripe, pagenr, 1);
 				if (!page)
@@ -1293,6 +1310,11 @@ static noinline void finish_rmw(struct btrfs_raid_bio *rbio)
 
 		for (pagenr = 0; pagenr < rbio->stripe_npages; pagenr++) {
 			struct page *page;
+
+			/* This vertical stripe has no data, skip it. */
+			if (!test_bit(pagenr, rbio->dbitmap))
+				continue;
+
 			if (stripe < rbio->nr_data) {
 				page = page_in_rbio(rbio, stripe, pagenr, 1);
 				if (!page)
@@ -1733,6 +1755,33 @@ static void btrfs_raid_unplug(struct blk_plug_cb *cb, bool from_schedule)
 	run_plug(plug);
 }
 
+/* Add the original bio into rbio->bio_list, and update rbio::dbitmap. */
+static void rbio_add_bio(struct btrfs_raid_bio *rbio, struct bio *orig_bio)
+{
+	const struct btrfs_fs_info *fs_info = rbio->fs_info;
+	const u64 orig_logical = orig_bio->bi_iter.bi_sector << SECTOR_SHIFT;
+	const u64 full_stripe_start = rbio->bbio->raid_map[0];
+	const u32 orig_len = orig_bio->bi_iter.bi_size;
+	const u32 sectorsize = fs_info->sectorsize;
+	u64 cur_logical;
+
+	ASSERT(orig_logical >= full_stripe_start &&
+	       orig_logical + orig_len <= full_stripe_start +
+	       rbio->nr_data * rbio->stripe_len);
+
+	bio_list_add(&rbio->bio_list, orig_bio);
+	rbio->bio_list_bytes += orig_bio->bi_iter.bi_size;
+
+	/* Update the dbitmap. */
+	for (cur_logical = orig_logical; cur_logical < orig_logical + orig_len;
+	     cur_logical += sectorsize) {
+		int bit = ((u32)(cur_logical - full_stripe_start) >>
+			   PAGE_SHIFT) % rbio->stripe_npages;
+
+		set_bit(bit, rbio->dbitmap);
+	}
+}
+
 /*
  * our main entry point for writes from the rest of the FS.
  */
@@ -1749,9 +1798,8 @@ int raid56_parity_write(struct btrfs_fs_info *fs_info, struct bio *bio,
 		btrfs_put_bbio(bbio);
 		return PTR_ERR(rbio);
 	}
-	bio_list_add(&rbio->bio_list, bio);
-	rbio->bio_list_bytes = bio->bi_iter.bi_size;
 	rbio->operation = BTRFS_RBIO_WRITE;
+	rbio_add_bio(rbio, bio);
 
 	btrfs_bio_counter_inc_noblocked(fs_info);
 	rbio->generic_bio_cnt = 1;
@@ -2053,9 +2101,12 @@ static int __raid56_parity_recover(struct btrfs_raid_bio *rbio)
 	atomic_set(&rbio->error, 0);
 
 	/*
-	 * read everything that hasn't failed.  Thanks to the
-	 * stripe cache, it is possible that some or all of these
-	 * pages are going to be uptodate.
+	 * Read everything that hasn't failed. However this time we will
+	 * not trust any cached sector.
+	 * As we may read out some stale data but higher layer is not reading
+	 * that stale part.
+	 *
+	 * So here we always re-read everything in recovery path.
 	 */
 	for (stripe = 0; stripe < rbio->real_stripes; stripe++) {
 		if (rbio->faila == stripe || rbio->failb == stripe) {
@@ -2064,16 +2115,6 @@ static int __raid56_parity_recover(struct btrfs_raid_bio *rbio)
 		}
 
 		for (pagenr = 0; pagenr < rbio->stripe_npages; pagenr++) {
-			struct page *p;
-
-			/*
-			 * the rmw code may have already read this
-			 * page in
-			 */
-			p = rbio_stripe_page(rbio, stripe, pagenr);
-			if (PageUptodate(p))
-				continue;
-
 			ret = rbio_add_io_page(rbio, &bio_list,
 				       rbio_stripe_page(rbio, stripe, pagenr),
 				       stripe, pagenr, rbio->stripe_len);
@@ -2155,8 +2196,7 @@ int raid56_parity_recover(struct btrfs_fs_info *fs_info, struct bio *bio,
 	}
 
 	rbio->operation = BTRFS_RBIO_READ_REBUILD;
-	bio_list_add(&rbio->bio_list, bio);
-	rbio->bio_list_bytes = bio->bi_iter.bi_size;
+	rbio_add_bio(rbio, bio);
 
 	rbio->faila = find_logical_bio_stripe(rbio, bio);
 	if (rbio->faila == -1) {
diff --git linux-libre-4.19.255-gnu1/fs/btrfs/tree-log.c linux-libre-4.19.256-gnu1/fs/btrfs/tree-log.c
index e00c50ea2eaf..0fe32c567ed7 100644
--- linux-libre-4.19.255-gnu1/fs/btrfs/tree-log.c
+++ linux-libre-4.19.256-gnu1/fs/btrfs/tree-log.c
@@ -1081,7 +1081,9 @@ again:
 	extref = btrfs_lookup_inode_extref(NULL, root, path, name, namelen,
 					   inode_objectid, parent_objectid, 0,
 					   0);
-	if (!IS_ERR_OR_NULL(extref)) {
+	if (IS_ERR(extref)) {
+		return PTR_ERR(extref);
+	} else if (extref) {
 		u32 item_size;
 		u32 cur_offset = 0;
 		unsigned long base;
diff --git linux-libre-4.19.255-gnu1/fs/cifs/smb2ops.c linux-libre-4.19.256-gnu1/fs/cifs/smb2ops.c
index cc34a28aecbc..f906984eb25b 100644
--- linux-libre-4.19.255-gnu1/fs/cifs/smb2ops.c
+++ linux-libre-4.19.256-gnu1/fs/cifs/smb2ops.c
@@ -762,9 +762,7 @@ move_smb2_ea_to_cifs(char *dst, size_t dst_size,
 	size_t name_len, value_len, user_name_len;
 
 	while (src_size > 0) {
-		name = &src->ea_data[0];
 		name_len = (size_t)src->ea_name_length;
-		value = &src->ea_data[src->ea_name_length + 1];
 		value_len = (size_t)le16_to_cpu(src->ea_value_length);
 
 		if (name_len == 0) {
@@ -777,6 +775,9 @@ move_smb2_ea_to_cifs(char *dst, size_t dst_size,
 			goto out;
 		}
 
+		name = &src->ea_data[0];
+		value = &src->ea_data[src->ea_name_length + 1];
+
 		if (ea_name) {
 			if (ea_name_len == name_len &&
 			    memcmp(ea_name, name, name_len) == 0) {
diff --git linux-libre-4.19.255-gnu1/fs/ext2/super.c linux-libre-4.19.256-gnu1/fs/ext2/super.c
index ad9fd08f66ba..44a1f356aca2 100644
--- linux-libre-4.19.255-gnu1/fs/ext2/super.c
+++ linux-libre-4.19.256-gnu1/fs/ext2/super.c
@@ -1088,9 +1088,10 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
 			sbi->s_frags_per_group);
 		goto failed_mount;
 	}
-	if (sbi->s_inodes_per_group > sb->s_blocksize * 8) {
+	if (sbi->s_inodes_per_group < sbi->s_inodes_per_block ||
+	    sbi->s_inodes_per_group > sb->s_blocksize * 8) {
 		ext2_msg(sb, KERN_ERR,
-			"error: #inodes per group too big: %lu",
+			"error: invalid #inodes per group: %lu",
 			sbi->s_inodes_per_group);
 		goto failed_mount;
 	}
@@ -1100,6 +1101,13 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
 	sbi->s_groups_count = ((le32_to_cpu(es->s_blocks_count) -
 				le32_to_cpu(es->s_first_data_block) - 1)
 					/ EXT2_BLOCKS_PER_GROUP(sb)) + 1;
+	if ((u64)sbi->s_groups_count * sbi->s_inodes_per_group !=
+	    le32_to_cpu(es->s_inodes_count)) {
+		ext2_msg(sb, KERN_ERR, "error: invalid #inodes: %u vs computed %llu",
+			 le32_to_cpu(es->s_inodes_count),
+			 (u64)sbi->s_groups_count * sbi->s_inodes_per_group);
+		goto failed_mount;
+	}
 	db_count = (sbi->s_groups_count + EXT2_DESC_PER_BLOCK(sb) - 1) /
 		   EXT2_DESC_PER_BLOCK(sb);
 	sbi->s_group_desc = kmalloc_array (db_count,
diff --git linux-libre-4.19.255-gnu1/fs/ext4/inline.c linux-libre-4.19.256-gnu1/fs/ext4/inline.c
index a2943382bf18..b1c6b9398eef 100644
--- linux-libre-4.19.255-gnu1/fs/ext4/inline.c
+++ linux-libre-4.19.256-gnu1/fs/ext4/inline.c
@@ -34,6 +34,9 @@ static int get_max_inline_xattr_value_size(struct inode *inode,
 	struct ext4_inode *raw_inode;
 	int free, min_offs;
 
+	if (!EXT4_INODE_HAS_XATTR_SPACE(inode))
+		return 0;
+
 	min_offs = EXT4_SB(inode->i_sb)->s_inode_size -
 			EXT4_GOOD_OLD_INODE_SIZE -
 			EXT4_I(inode)->i_extra_isize -
diff --git linux-libre-4.19.255-gnu1/fs/ext4/inode.c linux-libre-4.19.256-gnu1/fs/ext4/inode.c
index 76c887108df3..34cee87a0ac7 100644
--- linux-libre-4.19.255-gnu1/fs/ext4/inode.c
+++ linux-libre-4.19.256-gnu1/fs/ext4/inode.c
@@ -1755,7 +1755,14 @@ static void mpage_release_unused_pages(struct mpage_da_data *mpd,
 		ext4_lblk_t start, last;
 		start = index << (PAGE_SHIFT - inode->i_blkbits);
 		last = end << (PAGE_SHIFT - inode->i_blkbits);
+
+		/*
+		 * avoid racing with extent status tree scans made by
+		 * ext4_insert_delayed_block()
+		 */
+		down_write(&EXT4_I(inode)->i_data_sem);
 		ext4_es_remove_extent(inode, start, last - start + 1);
+		up_write(&EXT4_I(inode)->i_data_sem);
 	}
 
 	pagevec_init(&pvec);
@@ -4837,8 +4844,7 @@ static inline int ext4_iget_extra_inode(struct inode *inode,
 	__le32 *magic = (void *)raw_inode +
 			EXT4_GOOD_OLD_INODE_SIZE + ei->i_extra_isize;
 
-	if (EXT4_GOOD_OLD_INODE_SIZE + ei->i_extra_isize + sizeof(__le32) <=
-	    EXT4_INODE_SIZE(inode->i_sb) &&
+	if (EXT4_INODE_HAS_XATTR_SPACE(inode)  &&
 	    *magic == cpu_to_le32(EXT4_XATTR_MAGIC)) {
 		ext4_set_inode_state(inode, EXT4_STATE_XATTR);
 		return ext4_find_inline_data_nolock(inode);
diff --git linux-libre-4.19.255-gnu1/fs/ext4/migrate.c linux-libre-4.19.256-gnu1/fs/ext4/migrate.c
index 9adfe217b39d..37ce665ae1d2 100644
--- linux-libre-4.19.255-gnu1/fs/ext4/migrate.c
+++ linux-libre-4.19.256-gnu1/fs/ext4/migrate.c
@@ -435,7 +435,7 @@ int ext4_ext_migrate(struct inode *inode)
 	struct inode *tmp_inode = NULL;
 	struct migrate_struct lb;
 	unsigned long max_entries;
-	__u32 goal;
+	__u32 goal, tmp_csum_seed;
 	uid_t owner[2];
 
 	/*
@@ -483,6 +483,7 @@ int ext4_ext_migrate(struct inode *inode)
 	 * the migration.
 	 */
 	ei = EXT4_I(inode);
+	tmp_csum_seed = EXT4_I(tmp_inode)->i_csum_seed;
 	EXT4_I(tmp_inode)->i_csum_seed = ei->i_csum_seed;
 	i_size_write(tmp_inode, i_size_read(inode));
 	/*
@@ -593,6 +594,7 @@ err_out:
 	 * the inode is not visible to user space.
 	 */
 	tmp_inode->i_blocks = 0;
+	EXT4_I(tmp_inode)->i_csum_seed = tmp_csum_seed;
 
 	/* Reset the extent details */
 	ext4_ext_tree_init(handle, tmp_inode);
diff --git linux-libre-4.19.255-gnu1/fs/ext4/namei.c linux-libre-4.19.256-gnu1/fs/ext4/namei.c
index 5f8599419150..a878b9a8d9ea 100644
--- linux-libre-4.19.255-gnu1/fs/ext4/namei.c
+++ linux-libre-4.19.256-gnu1/fs/ext4/namei.c
@@ -53,6 +53,7 @@ static struct buffer_head *ext4_append(handle_t *handle,
 					struct inode *inode,
 					ext4_lblk_t *block)
 {
+	struct ext4_map_blocks map;
 	struct buffer_head *bh;
 	int err;
 
@@ -62,6 +63,21 @@ static struct buffer_head *ext4_append(handle_t *handle,
 		return ERR_PTR(-ENOSPC);
 
 	*block = inode->i_size >> inode->i_sb->s_blocksize_bits;
+	map.m_lblk = *block;
+	map.m_len = 1;
+
+	/*
+	 * We're appending new directory block. Make sure the block is not
+	 * allocated yet, otherwise we will end up corrupting the
+	 * directory.
+	 */
+	err = ext4_map_blocks(NULL, inode, &map, 0);
+	if (err < 0)
+		return ERR_PTR(err);
+	if (err) {
+		EXT4_ERROR_INODE(inode, "Logical block already allocated");
+		return ERR_PTR(-EFSCORRUPTED);
+	}
 
 	bh = ext4_bread(handle, inode, *block, EXT4_GET_BLOCKS_CREATE);
 	if (IS_ERR(bh))
@@ -2826,11 +2842,8 @@ bool ext4_empty_dir(struct inode *inode)
 		de = (struct ext4_dir_entry_2 *) (bh->b_data +
 					(offset & (sb->s_blocksize - 1)));
 		if (ext4_check_dir_entry(inode, NULL, de, bh,
-					 bh->b_data, bh->b_size, offset)) {
-			offset = (offset | (sb->s_blocksize - 1)) + 1;
-			continue;
-		}
-		if (le32_to_cpu(de->inode)) {
+					 bh->b_data, bh->b_size, offset) ||
+		    le32_to_cpu(de->inode)) {
 			brelse(bh);
 			return false;
 		}
diff --git linux-libre-4.19.255-gnu1/fs/ext4/resize.c linux-libre-4.19.256-gnu1/fs/ext4/resize.c
index d37493b39ab9..dd23c97ae951 100644
--- linux-libre-4.19.255-gnu1/fs/ext4/resize.c
+++ linux-libre-4.19.256-gnu1/fs/ext4/resize.c
@@ -1483,6 +1483,7 @@ static void ext4_update_super(struct super_block *sb,
 	 * Update the fs overhead information
 	 */
 	ext4_calculate_overhead(sb);
+	es->s_overhead_clusters = cpu_to_le32(sbi->s_overhead);
 
 	if (test_opt(sb, DEBUG))
 		printk(KERN_DEBUG "EXT4-fs: added group %u:"
@@ -1980,6 +1981,16 @@ int ext4_resize_fs(struct super_block *sb, ext4_fsblk_t n_blocks_count)
 	}
 	brelse(bh);
 
+	/*
+	 * For bigalloc, trim the requested size to the nearest cluster
+	 * boundary to avoid creating an unusable filesystem. We do this
+	 * silently, instead of returning an error, to avoid breaking
+	 * callers that blindly resize the filesystem to the full size of
+	 * the underlying block device.
+	 */
+	if (ext4_has_feature_bigalloc(sb))
+		n_blocks_count &= ~((1 << EXT4_CLUSTER_BITS(sb)) - 1);
+
 retry:
 	o_blocks_count = ext4_blocks_count(es);
 
diff --git linux-libre-4.19.255-gnu1/fs/ext4/xattr.c linux-libre-4.19.256-gnu1/fs/ext4/xattr.c
index 0cd9b84bdd9d..497649c69bba 100644
--- linux-libre-4.19.255-gnu1/fs/ext4/xattr.c
+++ linux-libre-4.19.256-gnu1/fs/ext4/xattr.c
@@ -2188,8 +2188,9 @@ int ext4_xattr_ibody_find(struct inode *inode, struct ext4_xattr_info *i,
 	struct ext4_inode *raw_inode;
 	int error;
 
-	if (EXT4_I(inode)->i_extra_isize == 0)
+	if (!EXT4_INODE_HAS_XATTR_SPACE(inode))
 		return 0;
+
 	raw_inode = ext4_raw_inode(&is->iloc);
 	header = IHDR(inode, raw_inode);
 	is->s.base = is->s.first = IFIRST(header);
@@ -2217,8 +2218,9 @@ int ext4_xattr_ibody_inline_set(handle_t *handle, struct inode *inode,
 	struct ext4_xattr_search *s = &is->s;
 	int error;
 
-	if (EXT4_I(inode)->i_extra_isize == 0)
+	if (!EXT4_INODE_HAS_XATTR_SPACE(inode))
 		return -ENOSPC;
+
 	error = ext4_xattr_set_entry(i, s, handle, inode, false /* is_block */);
 	if (error)
 		return error;
diff --git linux-libre-4.19.255-gnu1/fs/ext4/xattr.h linux-libre-4.19.256-gnu1/fs/ext4/xattr.h
index f39cad2abe2a..990084e00374 100644
--- linux-libre-4.19.255-gnu1/fs/ext4/xattr.h
+++ linux-libre-4.19.256-gnu1/fs/ext4/xattr.h
@@ -95,6 +95,19 @@ struct ext4_xattr_entry {
 
 #define EXT4_ZERO_XATTR_VALUE ((void *)-1)
 
+/*
+ * If we want to add an xattr to the inode, we should make sure that
+ * i_extra_isize is not 0 and that the inode size is not less than
+ * EXT4_GOOD_OLD_INODE_SIZE + extra_isize + pad.
+ *   EXT4_GOOD_OLD_INODE_SIZE   extra_isize header   entry   pad  data
+ * |--------------------------|------------|------|---------|---|-------|
+ */
+#define EXT4_INODE_HAS_XATTR_SPACE(inode)				\
+	((EXT4_I(inode)->i_extra_isize != 0) &&				\
+	 (EXT4_GOOD_OLD_INODE_SIZE + EXT4_I(inode)->i_extra_isize +	\
+	  sizeof(struct ext4_xattr_ibody_header) + EXT4_XATTR_PAD <=	\
+	  EXT4_INODE_SIZE((inode)->i_sb)))
+
 struct ext4_xattr_info {
 	const char *name;
 	const void *value;
diff --git linux-libre-4.19.255-gnu1/fs/f2fs/node.c linux-libre-4.19.256-gnu1/fs/f2fs/node.c
index ff3f97ba1a55..2c28f488ac2f 100644
--- linux-libre-4.19.255-gnu1/fs/f2fs/node.c
+++ linux-libre-4.19.256-gnu1/fs/f2fs/node.c
@@ -1232,7 +1232,11 @@ struct page *f2fs_new_node_page(struct dnode_of_data *dn, unsigned int ofs)
 		dec_valid_node_count(sbi, dn->inode, !ofs);
 		goto fail;
 	}
-	f2fs_bug_on(sbi, new_ni.blk_addr != NULL_ADDR);
+	if (unlikely(new_ni.blk_addr != NULL_ADDR)) {
+		err = -EFSCORRUPTED;
+		set_sbi_flag(sbi, SBI_NEED_FSCK);
+		goto fail;
+	}
 #endif
 	new_ni.nid = dn->nid;
 	new_ni.ino = dn->inode->i_ino;
diff --git linux-libre-4.19.255-gnu1/fs/fuse/inode.c linux-libre-4.19.256-gnu1/fs/fuse/inode.c
index 821597c61884..3b51c881baf8 100644
--- linux-libre-4.19.255-gnu1/fs/fuse/inode.c
+++ linux-libre-4.19.256-gnu1/fs/fuse/inode.c
@@ -174,6 +174,12 @@ void fuse_change_attributes_common(struct inode *inode, struct fuse_attr *attr,
 	inode->i_uid     = make_kuid(fc->user_ns, attr->uid);
 	inode->i_gid     = make_kgid(fc->user_ns, attr->gid);
 	inode->i_blocks  = attr->blocks;
+
+	/* Sanitize nsecs */
+	attr->atimensec = min_t(u32, attr->atimensec, NSEC_PER_SEC - 1);
+	attr->mtimensec = min_t(u32, attr->mtimensec, NSEC_PER_SEC - 1);
+	attr->ctimensec = min_t(u32, attr->ctimensec, NSEC_PER_SEC - 1);
+
 	inode->i_atime.tv_sec   = attr->atime;
 	inode->i_atime.tv_nsec  = attr->atimensec;
 	/* mtime from server may be stale due to local buffered write */
diff --git linux-libre-4.19.255-gnu1/fs/jbd2/transaction.c linux-libre-4.19.256-gnu1/fs/jbd2/transaction.c
index 8c305593fb51..dbad00c20aa1 100644
--- linux-libre-4.19.255-gnu1/fs/jbd2/transaction.c
+++ linux-libre-4.19.256-gnu1/fs/jbd2/transaction.c
@@ -1339,8 +1339,6 @@ int jbd2_journal_dirty_metadata(handle_t *handle, struct buffer_head *bh)
 	struct journal_head *jh;
 	int ret = 0;
 
-	if (is_handle_aborted(handle))
-		return -EROFS;
 	if (!buffer_jbd(bh))
 		return -EUCLEAN;
 
@@ -1387,6 +1385,18 @@ int jbd2_journal_dirty_metadata(handle_t *handle, struct buffer_head *bh)
 	journal = transaction->t_journal;
 	jbd_lock_bh_state(bh);
 
+	if (is_handle_aborted(handle)) {
+		/*
+		 * Check journal aborting with @jh->b_state_lock locked,
+		 * since 'jh->b_transaction' could be replaced with
+		 * 'jh->b_next_transaction' during old transaction
+		 * committing if journal aborted, which may fail
+		 * assertion on 'jh->b_frozen_data == NULL'.
+		 */
+		ret = -EROFS;
+		goto out_unlock_bh;
+	}
+
 	if (jh->b_modified == 0) {
 		/*
 		 * This buffer's got modified and becoming part
diff --git linux-libre-4.19.255-gnu1/fs/namei.c linux-libre-4.19.256-gnu1/fs/namei.c
index 327844fedf3d..c34ee9653559 100644
--- linux-libre-4.19.255-gnu1/fs/namei.c
+++ linux-libre-4.19.256-gnu1/fs/namei.c
@@ -3453,6 +3453,8 @@ struct dentry *vfs_tmpfile(struct dentry *dentry, umode_t mode, int open_flag)
 	child = d_alloc(dentry, &slash_name);
 	if (unlikely(!child))
 		goto out_err;
+	if (!IS_POSIXACL(dir))
+		mode &= ~current_umask();
 	error = dir->i_op->tmpfile(dir, child, mode);
 	if (error)
 		goto out_err;
diff --git linux-libre-4.19.255-gnu1/fs/nfs/nfs4idmap.c linux-libre-4.19.256-gnu1/fs/nfs/nfs4idmap.c
index bf34ddaa2ad7..c1c26b06764f 100644
--- linux-libre-4.19.255-gnu1/fs/nfs/nfs4idmap.c
+++ linux-libre-4.19.256-gnu1/fs/nfs/nfs4idmap.c
@@ -547,22 +547,20 @@ nfs_idmap_prepare_pipe_upcall(struct idmap *idmap,
 	return true;
 }
 
-static void
-nfs_idmap_complete_pipe_upcall_locked(struct idmap *idmap, int ret)
+static void nfs_idmap_complete_pipe_upcall(struct idmap_legacy_upcalldata *data,
+					   int ret)
 {
-	struct key *authkey = idmap->idmap_upcall_data->authkey;
-
-	kfree(idmap->idmap_upcall_data);
-	idmap->idmap_upcall_data = NULL;
-	complete_request_key(authkey, ret);
-	key_put(authkey);
+	complete_request_key(data->authkey, ret);
+	key_put(data->authkey);
+	kfree(data);
 }
 
-static void
-nfs_idmap_abort_pipe_upcall(struct idmap *idmap, int ret)
+static void nfs_idmap_abort_pipe_upcall(struct idmap *idmap,
+					struct idmap_legacy_upcalldata *data,
+					int ret)
 {
-	if (idmap->idmap_upcall_data != NULL)
-		nfs_idmap_complete_pipe_upcall_locked(idmap, ret);
+	if (cmpxchg(&idmap->idmap_upcall_data, data, NULL) == data)
+		nfs_idmap_complete_pipe_upcall(data, ret);
 }
 
 static int nfs_idmap_legacy_upcall(struct key *authkey, void *aux)
@@ -599,7 +597,7 @@ static int nfs_idmap_legacy_upcall(struct key *authkey, void *aux)
 
 	ret = rpc_queue_upcall(idmap->idmap_pipe, msg);
 	if (ret < 0)
-		nfs_idmap_abort_pipe_upcall(idmap, ret);
+		nfs_idmap_abort_pipe_upcall(idmap, data, ret);
 
 	return ret;
 out2:
@@ -655,6 +653,7 @@ idmap_pipe_downcall(struct file *filp, const char __user *src, size_t mlen)
 	struct request_key_auth *rka;
 	struct rpc_inode *rpci = RPC_I(file_inode(filp));
 	struct idmap *idmap = (struct idmap *)rpci->private;
+	struct idmap_legacy_upcalldata *data;
 	struct key *authkey;
 	struct idmap_msg im;
 	size_t namelen_in;
@@ -664,10 +663,11 @@ idmap_pipe_downcall(struct file *filp, const char __user *src, size_t mlen)
 	 * will have been woken up and someone else may now have used
 	 * idmap_key_cons - so after this point we may no longer touch it.
 	 */
-	if (idmap->idmap_upcall_data == NULL)
+	data = xchg(&idmap->idmap_upcall_data, NULL);
+	if (data == NULL)
 		goto out_noupcall;
 
-	authkey = idmap->idmap_upcall_data->authkey;
+	authkey = data->authkey;
 	rka = get_request_key_auth(authkey);
 
 	if (mlen != sizeof(im)) {
@@ -689,18 +689,17 @@ idmap_pipe_downcall(struct file *filp, const char __user *src, size_t mlen)
 	if (namelen_in == 0 || namelen_in == IDMAP_NAMESZ) {
 		ret = -EINVAL;
 		goto out;
-}
+	}
 
-	ret = nfs_idmap_read_and_verify_message(&im,
-			&idmap->idmap_upcall_data->idmap_msg,
-			rka->target_key, authkey);
+	ret = nfs_idmap_read_and_verify_message(&im, &data->idmap_msg,
+						rka->target_key, authkey);
 	if (ret >= 0) {
 		key_set_timeout(rka->target_key, nfs_idmap_cache_timeout);
 		ret = mlen;
 	}
 
 out:
-	nfs_idmap_complete_pipe_upcall_locked(idmap, ret);
+	nfs_idmap_complete_pipe_upcall(data, ret);
 out_noupcall:
 	return ret;
 }
@@ -714,7 +713,7 @@ idmap_pipe_destroy_msg(struct rpc_pipe_msg *msg)
 	struct idmap *idmap = data->idmap;
 
 	if (msg->errno)
-		nfs_idmap_abort_pipe_upcall(idmap, msg->errno);
+		nfs_idmap_abort_pipe_upcall(idmap, data, msg->errno);
 }
 
 static void
@@ -722,8 +721,11 @@ idmap_release_pipe(struct inode *inode)
 {
 	struct rpc_inode *rpci = RPC_I(inode);
 	struct idmap *idmap = (struct idmap *)rpci->private;
+	struct idmap_legacy_upcalldata *data;
 
-	nfs_idmap_abort_pipe_upcall(idmap, -EPIPE);
+	data = xchg(&idmap->idmap_upcall_data, NULL);
+	if (data)
+		nfs_idmap_complete_pipe_upcall(data, -EPIPE);
 }
 
 int nfs_map_name_to_uid(const struct nfs_server *server, const char *name, size_t namelen, kuid_t *uid)
diff --git linux-libre-4.19.255-gnu1/fs/nfs/nfs4proc.c linux-libre-4.19.256-gnu1/fs/nfs/nfs4proc.c
index f48a11fa78bb..f9f76594b866 100644
--- linux-libre-4.19.255-gnu1/fs/nfs/nfs4proc.c
+++ linux-libre-4.19.256-gnu1/fs/nfs/nfs4proc.c
@@ -2920,12 +2920,13 @@ static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata,
 	}
 
 out:
-	if (opendata->lgp) {
-		nfs4_lgopen_release(opendata->lgp);
-		opendata->lgp = NULL;
-	}
-	if (!opendata->cancelled)
+	if (!opendata->cancelled) {
+		if (opendata->lgp) {
+			nfs4_lgopen_release(opendata->lgp);
+			opendata->lgp = NULL;
+		}
 		nfs4_sequence_free_slot(&opendata->o_res.seq_res);
+	}
 	return ret;
 }
 
@@ -8701,6 +8702,9 @@ static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nf
 		rpc_delay(task, NFS4_POLL_RETRY_MAX);
 		/* fall through */
 	case -NFS4ERR_RETRY_UNCACHED_REP:
+	case -EACCES:
+		dprintk("%s: failed to reclaim complete error %d for server %s, retrying\n",
+			__func__, task->tk_status, clp->cl_hostname);
 		return -EAGAIN;
 	case -NFS4ERR_BADSESSION:
 	case -NFS4ERR_DEADSESSION:
diff --git linux-libre-4.19.255-gnu1/fs/overlayfs/export.c linux-libre-4.19.256-gnu1/fs/overlayfs/export.c
index ba6c7c59261a..271f8c9fe253 100644
--- linux-libre-4.19.255-gnu1/fs/overlayfs/export.c
+++ linux-libre-4.19.256-gnu1/fs/overlayfs/export.c
@@ -277,7 +277,7 @@ static int ovl_encode_fh(struct inode *inode, u32 *fid, int *max_len,
 		return FILEID_INVALID;
 
 	dentry = d_find_any_alias(inode);
-	if (WARN_ON(!dentry))
+	if (!dentry)
 		return FILEID_INVALID;
 
 	type = ovl_dentry_to_fh(dentry, fid, max_len);
diff --git linux-libre-4.19.255-gnu1/fs/splice.c linux-libre-4.19.256-gnu1/fs/splice.c
index fd28c7da3c83..ef1604e307f1 100644
--- linux-libre-4.19.255-gnu1/fs/splice.c
+++ linux-libre-4.19.256-gnu1/fs/splice.c
@@ -899,17 +899,15 @@ ssize_t splice_direct_to_actor(struct file *in, struct splice_desc *sd,
 {
 	struct pipe_inode_info *pipe;
 	long ret, bytes;
-	umode_t i_mode;
 	size_t len;
 	int i, flags, more;
 
 	/*
-	 * We require the input being a regular file, as we don't want to
-	 * randomly drop data for eg socket -> socket splicing. Use the
-	 * piped splicing for that!
+	 * We require the input to be seekable, as we don't want to randomly
+	 * drop data for eg socket -> socket splicing. Use the piped splicing
+	 * for that!
 	 */
-	i_mode = file_inode(in)->i_mode;
-	if (unlikely(!S_ISREG(i_mode) && !S_ISBLK(i_mode)))
+	if (unlikely(!(in->f_mode & FMODE_LSEEK)))
 		return -EINVAL;
 
 	/*
diff --git linux-libre-4.19.255-gnu1/include/acpi/cppc_acpi.h linux-libre-4.19.256-gnu1/include/acpi/cppc_acpi.h
index 8e0b8250a139..c1f437d31a88 100644
--- linux-libre-4.19.255-gnu1/include/acpi/cppc_acpi.h
+++ linux-libre-4.19.256-gnu1/include/acpi/cppc_acpi.h
@@ -20,7 +20,7 @@
 #include <acpi/pcc.h>
 #include <acpi/processor.h>
 
-/* Support CPPCv2 and CPPCv3  */
+/* CPPCv2 and CPPCv3 support */
 #define CPPC_V2_REV	2
 #define CPPC_V3_REV	3
 #define CPPC_V2_NUM_ENT	21
diff --git linux-libre-4.19.255-gnu1/include/asm-generic/bitops/atomic.h linux-libre-4.19.256-gnu1/include/asm-generic/bitops/atomic.h
index dd90c9792909..18399e3759a2 100644
--- linux-libre-4.19.255-gnu1/include/asm-generic/bitops/atomic.h
+++ linux-libre-4.19.256-gnu1/include/asm-generic/bitops/atomic.h
@@ -35,9 +35,6 @@ static inline int test_and_set_bit(unsigned int nr, volatile unsigned long *p)
 	unsigned long mask = BIT_MASK(nr);
 
 	p += BIT_WORD(nr);
-	if (READ_ONCE(*p) & mask)
-		return 1;
-
 	old = atomic_long_fetch_or(mask, (atomic_long_t *)p);
 	return !!(old & mask);
 }
@@ -48,9 +45,6 @@ static inline int test_and_clear_bit(unsigned int nr, volatile unsigned long *p)
 	unsigned long mask = BIT_MASK(nr);
 
 	p += BIT_WORD(nr);
-	if (!(READ_ONCE(*p) & mask))
-		return 0;
-
 	old = atomic_long_fetch_andnot(mask, (atomic_long_t *)p);
 	return !!(old & mask);
 }
diff --git linux-libre-4.19.255-gnu1/include/linux/buffer_head.h linux-libre-4.19.256-gnu1/include/linux/buffer_head.h
index 9168fc33a4f7..9d5b0a0a651f 100644
--- linux-libre-4.19.255-gnu1/include/linux/buffer_head.h
+++ linux-libre-4.19.256-gnu1/include/linux/buffer_head.h
@@ -117,7 +117,6 @@ static __always_inline int test_clear_buffer_##name(struct buffer_head *bh) \
  * of the form "mark_buffer_foo()".  These are higher-level functions which
  * do something in addition to setting a b_state bit.
  */
-BUFFER_FNS(Uptodate, uptodate)
 BUFFER_FNS(Dirty, dirty)
 TAS_BUFFER_FNS(Dirty, dirty)
 BUFFER_FNS(Lock, locked)
@@ -135,6 +134,30 @@ BUFFER_FNS(Meta, meta)
 BUFFER_FNS(Prio, prio)
 BUFFER_FNS(Defer_Completion, defer_completion)
 
+static __always_inline void set_buffer_uptodate(struct buffer_head *bh)
+{
+	/*
+	 * make it consistent with folio_mark_uptodate
+	 * pairs with smp_load_acquire in buffer_uptodate
+	 */
+	smp_mb__before_atomic();
+	set_bit(BH_Uptodate, &bh->b_state);
+}
+
+static __always_inline void clear_buffer_uptodate(struct buffer_head *bh)
+{
+	clear_bit(BH_Uptodate, &bh->b_state);
+}
+
+static __always_inline int buffer_uptodate(const struct buffer_head *bh)
+{
+	/*
+	 * make it consistent with folio_test_uptodate
+	 * pairs with smp_mb__before_atomic in set_buffer_uptodate
+	 */
+	return (smp_load_acquire(&bh->b_state) & (1UL << BH_Uptodate)) != 0;
+}
+
 #define bh_offset(bh)		((unsigned long)(bh)->b_data & ~PAGE_MASK)
 
 /* If we *know* page->private refers to buffer_heads */
diff --git linux-libre-4.19.255-gnu1/include/linux/kfifo.h linux-libre-4.19.256-gnu1/include/linux/kfifo.h
index 89fc8dc7bf38..ab9ff74818a4 100644
--- linux-libre-4.19.255-gnu1/include/linux/kfifo.h
+++ linux-libre-4.19.256-gnu1/include/linux/kfifo.h
@@ -629,7 +629,7 @@ __kfifo_uint_must_check_helper( \
  * writer, you don't need extra locking to use these macro.
  */
 #define	kfifo_to_user(fifo, to, len, copied) \
-__kfifo_uint_must_check_helper( \
+__kfifo_int_must_check_helper( \
 ({ \
 	typeof((fifo) + 1) __tmp = (fifo); \
 	void __user *__to = (to); \
diff --git linux-libre-4.19.255-gnu1/include/linux/kvm_host.h linux-libre-4.19.256-gnu1/include/linux/kvm_host.h
index 827f70ce0b49..4f96aef4e8b8 100644
--- linux-libre-4.19.255-gnu1/include/linux/kvm_host.h
+++ linux-libre-4.19.256-gnu1/include/linux/kvm_host.h
@@ -128,6 +128,7 @@ static inline bool is_error_page(struct page *page)
 #define KVM_REQ_MMU_RELOAD        (1 | KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
 #define KVM_REQ_PENDING_TIMER     2
 #define KVM_REQ_UNHALT            3
+#define KVM_REQ_VM_BUGGED         (4 | KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
 #define KVM_REQUEST_ARCH_BASE     8
 
 #define KVM_ARCH_REQ_FLAGS(nr, flags) ({ \
@@ -482,6 +483,7 @@ struct kvm {
 	struct srcu_struct srcu;
 	struct srcu_struct irq_srcu;
 	pid_t userspace_pid;
+	bool vm_bugged;
 };
 
 #define kvm_err(fmt, ...) \
@@ -510,6 +512,31 @@ struct kvm {
 #define vcpu_err(vcpu, fmt, ...)					\
 	kvm_err("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__)
 
+bool kvm_make_all_cpus_request(struct kvm *kvm, unsigned int req);
+static inline void kvm_vm_bugged(struct kvm *kvm)
+{
+	kvm->vm_bugged = true;
+	kvm_make_all_cpus_request(kvm, KVM_REQ_VM_BUGGED);
+}
+
+#define KVM_BUG(cond, kvm, fmt...)				\
+({								\
+	int __ret = (cond);					\
+								\
+	if (WARN_ONCE(__ret && !(kvm)->vm_bugged, fmt))		\
+		kvm_vm_bugged(kvm);				\
+	unlikely(__ret);					\
+})
+
+#define KVM_BUG_ON(cond, kvm)					\
+({								\
+	int __ret = (cond);					\
+								\
+	if (WARN_ON_ONCE(__ret && !(kvm)->vm_bugged))		\
+		kvm_vm_bugged(kvm);				\
+	unlikely(__ret);					\
+})
+
 static inline struct kvm_io_bus *kvm_get_bus(struct kvm *kvm, enum kvm_bus idx)
 {
 	return srcu_dereference_check(kvm->buses[idx], &kvm->srcu,
@@ -770,7 +797,6 @@ void kvm_reload_remote_mmus(struct kvm *kvm);
 
 bool kvm_make_vcpus_request_mask(struct kvm *kvm, unsigned int req,
 				 unsigned long *vcpu_bitmap, cpumask_var_t tmp);
-bool kvm_make_all_cpus_request(struct kvm *kvm, unsigned int req);
 
 long kvm_arch_dev_ioctl(struct file *filp,
 			unsigned int ioctl, unsigned long arg);
diff --git linux-libre-4.19.255-gnu1/include/linux/mfd/t7l66xb.h linux-libre-4.19.256-gnu1/include/linux/mfd/t7l66xb.h
index b4629818aea5..d4e7f0453c91 100644
--- linux-libre-4.19.255-gnu1/include/linux/mfd/t7l66xb.h
+++ linux-libre-4.19.256-gnu1/include/linux/mfd/t7l66xb.h
@@ -16,7 +16,6 @@
 
 struct t7l66xb_platform_data {
 	int (*enable)(struct platform_device *dev);
-	int (*disable)(struct platform_device *dev);
 	int (*suspend)(struct platform_device *dev);
 	int (*resume)(struct platform_device *dev);
 
diff --git linux-libre-4.19.255-gnu1/include/linux/nmi.h linux-libre-4.19.256-gnu1/include/linux/nmi.h
index 9003e29cde46..e972d1ae1ee6 100644
--- linux-libre-4.19.255-gnu1/include/linux/nmi.h
+++ linux-libre-4.19.256-gnu1/include/linux/nmi.h
@@ -122,6 +122,8 @@ int watchdog_nmi_probe(void);
 int watchdog_nmi_enable(unsigned int cpu);
 void watchdog_nmi_disable(unsigned int cpu);
 
+void lockup_detector_reconfigure(void);
+
 /**
  * touch_nmi_watchdog - restart NMI watchdog timeout.
  *
diff --git linux-libre-4.19.255-gnu1/include/linux/pci_ids.h linux-libre-4.19.256-gnu1/include/linux/pci_ids.h
index c0dd2f749d3f..1658e9f8d803 100644
--- linux-libre-4.19.255-gnu1/include/linux/pci_ids.h
+++ linux-libre-4.19.256-gnu1/include/linux/pci_ids.h
@@ -59,6 +59,8 @@
 #define PCI_CLASS_BRIDGE_EISA		0x0602
 #define PCI_CLASS_BRIDGE_MC		0x0603
 #define PCI_CLASS_BRIDGE_PCI		0x0604
+#define PCI_CLASS_BRIDGE_PCI_NORMAL		0x060400
+#define PCI_CLASS_BRIDGE_PCI_SUBTRACTIVE	0x060401
 #define PCI_CLASS_BRIDGE_PCMCIA		0x0605
 #define PCI_CLASS_BRIDGE_NUBUS		0x0606
 #define PCI_CLASS_BRIDGE_CARDBUS	0x0607
diff --git linux-libre-4.19.255-gnu1/include/linux/usb/hcd.h linux-libre-4.19.256-gnu1/include/linux/usb/hcd.h
index 97e2ddec18b1..cf7feb8eb1ba 100644
--- linux-libre-4.19.255-gnu1/include/linux/usb/hcd.h
+++ linux-libre-4.19.256-gnu1/include/linux/usb/hcd.h
@@ -66,6 +66,7 @@
 
 struct giveback_urb_bh {
 	bool running;
+	bool high_prio;
 	spinlock_t lock;
 	struct list_head  head;
 	struct tasklet_struct bh;
diff --git linux-libre-4.19.255-gnu1/include/sound/core.h linux-libre-4.19.256-gnu1/include/sound/core.h
index 36a5934cf4b1..b5a8cc4d02cc 100644
--- linux-libre-4.19.255-gnu1/include/sound/core.h
+++ linux-libre-4.19.256-gnu1/include/sound/core.h
@@ -444,4 +444,12 @@ snd_pci_quirk_lookup_id(u16 vendor, u16 device,
 }
 #endif
 
+/* async signal helpers */
+struct snd_fasync;
+
+int snd_fasync_helper(int fd, struct file *file, int on,
+		      struct snd_fasync **fasyncp);
+void snd_kill_fasync(struct snd_fasync *fasync, int signal, int poll);
+void snd_fasync_free(struct snd_fasync *fasync);
+
 #endif /* __SOUND_CORE_H */
diff --git linux-libre-4.19.255-gnu1/include/trace/events/spmi.h linux-libre-4.19.256-gnu1/include/trace/events/spmi.h
index 8b60efe18ba6..a6819fd85cdf 100644
--- linux-libre-4.19.255-gnu1/include/trace/events/spmi.h
+++ linux-libre-4.19.256-gnu1/include/trace/events/spmi.h
@@ -21,15 +21,15 @@ TRACE_EVENT(spmi_write_begin,
 		__field		( u8,         sid       )
 		__field		( u16,        addr      )
 		__field		( u8,         len       )
-		__dynamic_array	( u8,   buf,  len + 1   )
+		__dynamic_array	( u8,   buf,  len       )
 	),
 
 	TP_fast_assign(
 		__entry->opcode = opcode;
 		__entry->sid    = sid;
 		__entry->addr   = addr;
-		__entry->len    = len + 1;
-		memcpy(__get_dynamic_array(buf), buf, len + 1);
+		__entry->len    = len;
+		memcpy(__get_dynamic_array(buf), buf, len);
 	),
 
 	TP_printk("opc=%d sid=%02d addr=0x%04x len=%d buf=0x[%*phD]",
@@ -92,7 +92,7 @@ TRACE_EVENT(spmi_read_end,
 		__field		( u16,        addr      )
 		__field		( int,        ret       )
 		__field		( u8,         len       )
-		__dynamic_array	( u8,   buf,  len + 1   )
+		__dynamic_array	( u8,   buf,  len       )
 	),
 
 	TP_fast_assign(
@@ -100,8 +100,8 @@ TRACE_EVENT(spmi_read_end,
 		__entry->sid    = sid;
 		__entry->addr   = addr;
 		__entry->ret    = ret;
-		__entry->len    = len + 1;
-		memcpy(__get_dynamic_array(buf), buf, len + 1);
+		__entry->len    = len;
+		memcpy(__get_dynamic_array(buf), buf, len);
 	),
 
 	TP_printk("opc=%d sid=%02d addr=0x%04x ret=%d len=%02d buf=0x[%*phD]",
diff --git linux-libre-4.19.255-gnu1/include/uapi/linux/can/error.h linux-libre-4.19.256-gnu1/include/uapi/linux/can/error.h
index bfc4b5d22a5e..383f3d508a53 100644
--- linux-libre-4.19.255-gnu1/include/uapi/linux/can/error.h
+++ linux-libre-4.19.256-gnu1/include/uapi/linux/can/error.h
@@ -120,6 +120,9 @@
 #define CAN_ERR_TRX_CANL_SHORT_TO_GND  0x70 /* 0111 0000 */
 #define CAN_ERR_TRX_CANL_SHORT_TO_CANH 0x80 /* 1000 0000 */
 
-/* controller specific additional information / data[5..7] */
+/* data[5] is reserved (do not use) */
+
+/* TX error counter / data[6] */
+/* RX error counter / data[7] */
 
 #endif /* _UAPI_CAN_ERROR_H */
diff --git linux-libre-4.19.255-gnu1/kernel/bpf/verifier.c linux-libre-4.19.256-gnu1/kernel/bpf/verifier.c
index 30ac8ee8294c..694ee0b1fefe 100644
--- linux-libre-4.19.255-gnu1/kernel/bpf/verifier.c
+++ linux-libre-4.19.256-gnu1/kernel/bpf/verifier.c
@@ -3496,6 +3496,7 @@ static int adjust_scalar_min_max_vals(struct bpf_verifier_env *env,
 		coerce_reg_to_size(dst_reg, 4);
 	}
 
+	__update_reg_bounds(dst_reg);
 	__reg_deduce_bounds(dst_reg);
 	__reg_bound_offset(dst_reg);
 	return 0;
diff --git linux-libre-4.19.255-gnu1/kernel/kprobes.c linux-libre-4.19.256-gnu1/kernel/kprobes.c
index 993b84cc1db5..099191716d4c 100644
--- linux-libre-4.19.255-gnu1/kernel/kprobes.c
+++ linux-libre-4.19.256-gnu1/kernel/kprobes.c
@@ -1566,7 +1566,8 @@ static int check_kprobe_address_safe(struct kprobe *p,
 	preempt_disable();
 
 	/* Ensure it is not in reserved area nor out of text */
-	if (!kernel_text_address((unsigned long) p->addr) ||
+	if (!(core_kernel_text((unsigned long) p->addr) ||
+	    is_module_text_address((unsigned long) p->addr)) ||
 	    within_kprobe_blacklist((unsigned long) p->addr) ||
 	    jump_label_text_reserved(p->addr, p->addr) ||
 	    find_bug((unsigned long)p->addr)) {
diff --git linux-libre-4.19.255-gnu1/kernel/power/user.c linux-libre-4.19.256-gnu1/kernel/power/user.c
index 2d8b60a3c86b..6a11154b3d52 100644
--- linux-libre-4.19.255-gnu1/kernel/power/user.c
+++ linux-libre-4.19.256-gnu1/kernel/power/user.c
@@ -29,6 +29,7 @@
 
 #include "power.h"
 
+static bool need_wait;
 
 #define SNAPSHOT_MINOR	231
 
@@ -82,7 +83,7 @@ static int snapshot_open(struct inode *inode, struct file *filp)
 		 * Resuming.  We may need to wait for the image device to
 		 * appear.
 		 */
-		wait_for_device_probe();
+		need_wait = true;
 
 		data->swap = -1;
 		data->mode = O_WRONLY;
@@ -174,6 +175,11 @@ static ssize_t snapshot_write(struct file *filp, const char __user *buf,
 	ssize_t res;
 	loff_t pg_offp = *offp & ~PAGE_MASK;
 
+	if (need_wait) {
+		wait_for_device_probe();
+		need_wait = false;
+	}
+
 	lock_system_sleep();
 
 	data = filp->private_data;
@@ -209,6 +215,11 @@ static long snapshot_ioctl(struct file *filp, unsigned int cmd,
 	loff_t size;
 	sector_t offset;
 
+	if (need_wait) {
+		wait_for_device_probe();
+		need_wait = false;
+	}
+
 	if (_IOC_TYPE(cmd) != SNAPSHOT_IOC_MAGIC)
 		return -ENOTTY;
 	if (_IOC_NR(cmd) > SNAPSHOT_IOC_MAXNR)
diff --git linux-libre-4.19.255-gnu1/kernel/profile.c linux-libre-4.19.256-gnu1/kernel/profile.c
index efa58f63dc1b..7fc621404230 100644
--- linux-libre-4.19.255-gnu1/kernel/profile.c
+++ linux-libre-4.19.256-gnu1/kernel/profile.c
@@ -108,6 +108,13 @@ int __ref profile_init(void)
 
 	/* only text is profiled */
 	prof_len = (_etext - _stext) >> prof_shift;
+
+	if (!prof_len) {
+		pr_warn("profiling shift: %u too large\n", prof_shift);
+		prof_on = 0;
+		return -EINVAL;
+	}
+
 	buffer_bytes = prof_len*sizeof(atomic_t);
 
 	if (!alloc_cpumask_var(&prof_cpu_mask, GFP_KERNEL))
diff --git linux-libre-4.19.255-gnu1/kernel/sched/rt.c linux-libre-4.19.256-gnu1/kernel/sched/rt.c
index 70e8cd395474..9c6c3572b131 100644
--- linux-libre-4.19.255-gnu1/kernel/sched/rt.c
+++ linux-libre-4.19.256-gnu1/kernel/sched/rt.c
@@ -434,7 +434,7 @@ static inline void rt_queue_push_tasks(struct rq *rq)
 #endif /* CONFIG_SMP */
 
 static void enqueue_top_rt_rq(struct rt_rq *rt_rq);
-static void dequeue_top_rt_rq(struct rt_rq *rt_rq);
+static void dequeue_top_rt_rq(struct rt_rq *rt_rq, unsigned int count);
 
 static inline int on_rt_rq(struct sched_rt_entity *rt_se)
 {
@@ -516,7 +516,7 @@ static void sched_rt_rq_dequeue(struct rt_rq *rt_rq)
 	rt_se = rt_rq->tg->rt_se[cpu];
 
 	if (!rt_se) {
-		dequeue_top_rt_rq(rt_rq);
+		dequeue_top_rt_rq(rt_rq, rt_rq->rt_nr_running);
 		/* Kick cpufreq (see the comment in kernel/sched/sched.h). */
 		cpufreq_update_util(rq_of_rt_rq(rt_rq), 0);
 	}
@@ -602,7 +602,7 @@ static inline void sched_rt_rq_enqueue(struct rt_rq *rt_rq)
 
 static inline void sched_rt_rq_dequeue(struct rt_rq *rt_rq)
 {
-	dequeue_top_rt_rq(rt_rq);
+	dequeue_top_rt_rq(rt_rq, rt_rq->rt_nr_running);
 }
 
 static inline int rt_rq_throttled(struct rt_rq *rt_rq)
@@ -1001,7 +1001,7 @@ static void update_curr_rt(struct rq *rq)
 }
 
 static void
-dequeue_top_rt_rq(struct rt_rq *rt_rq)
+dequeue_top_rt_rq(struct rt_rq *rt_rq, unsigned int count)
 {
 	struct rq *rq = rq_of_rt_rq(rt_rq);
 
@@ -1012,7 +1012,7 @@ dequeue_top_rt_rq(struct rt_rq *rt_rq)
 
 	BUG_ON(!rq->nr_running);
 
-	sub_nr_running(rq, rt_rq->rt_nr_running);
+	sub_nr_running(rq, count);
 	rt_rq->rt_queued = 0;
 
 }
@@ -1291,18 +1291,21 @@ static void __dequeue_rt_entity(struct sched_rt_entity *rt_se, unsigned int flag
 static void dequeue_rt_stack(struct sched_rt_entity *rt_se, unsigned int flags)
 {
 	struct sched_rt_entity *back = NULL;
+	unsigned int rt_nr_running;
 
 	for_each_sched_rt_entity(rt_se) {
 		rt_se->back = back;
 		back = rt_se;
 	}
 
-	dequeue_top_rt_rq(rt_rq_of_se(back));
+	rt_nr_running = rt_rq_of_se(back)->rt_nr_running;
 
 	for (rt_se = back; rt_se; rt_se = rt_se->back) {
 		if (on_rt_rq(rt_se))
 			__dequeue_rt_entity(rt_se, flags);
 	}
+
+	dequeue_top_rt_rq(rt_rq_of_se(back), rt_nr_running);
 }
 
 static void enqueue_rt_entity(struct sched_rt_entity *rt_se, unsigned int flags)
diff --git linux-libre-4.19.255-gnu1/kernel/trace/trace_events.c linux-libre-4.19.256-gnu1/kernel/trace/trace_events.c
index 1ca64a9296d0..d2f9146d1ad7 100644
--- linux-libre-4.19.255-gnu1/kernel/trace/trace_events.c
+++ linux-libre-4.19.256-gnu1/kernel/trace/trace_events.c
@@ -173,6 +173,7 @@ static int trace_define_generic_fields(void)
 
 	__generic_field(int, CPU, FILTER_CPU);
 	__generic_field(int, cpu, FILTER_CPU);
+	__generic_field(int, common_cpu, FILTER_CPU);
 	__generic_field(char *, COMM, FILTER_COMM);
 	__generic_field(char *, comm, FILTER_COMM);
 
diff --git linux-libre-4.19.255-gnu1/kernel/trace/trace_probe.c linux-libre-4.19.256-gnu1/kernel/trace/trace_probe.c
index e99c3ce7aa65..d85ee1778b99 100644
--- linux-libre-4.19.255-gnu1/kernel/trace/trace_probe.c
+++ linux-libre-4.19.256-gnu1/kernel/trace/trace_probe.c
@@ -361,7 +361,7 @@ static int parse_probe_vars(char *arg, const struct fetch_type *t,
 			}
 		} else
 			ret = -EINVAL;
-	} else if (strcmp(arg, "comm") == 0) {
+	} else if (strcmp(arg, "comm") == 0 || strcmp(arg, "COMM") == 0) {
 		if (strcmp(t->name, "string") != 0 &&
 		    strcmp(t->name, "string_size") != 0)
 			return -EINVAL;
@@ -544,7 +544,7 @@ int traceprobe_parse_probe_arg(char *arg, ssize_t *size,
 	 * The default type of $comm should be "string", and it can't be
 	 * dereferenced.
 	 */
-	if (!t && strcmp(arg, "$comm") == 0)
+	if (!t && (strcmp(arg, "$comm") == 0 || strcmp(arg, "$COMM") == 0))
 		t = "string";
 	parg->type = find_fetch_type(t, ftbl);
 	if (!parg->type) {
diff --git linux-libre-4.19.255-gnu1/kernel/watchdog.c linux-libre-4.19.256-gnu1/kernel/watchdog.c
index 6d60701dc636..44096c4f4d60 100644
--- linux-libre-4.19.255-gnu1/kernel/watchdog.c
+++ linux-libre-4.19.256-gnu1/kernel/watchdog.c
@@ -561,7 +561,7 @@ int lockup_detector_offline_cpu(unsigned int cpu)
 	return 0;
 }
 
-static void lockup_detector_reconfigure(void)
+static void __lockup_detector_reconfigure(void)
 {
 	cpus_read_lock();
 	watchdog_nmi_stop();
@@ -581,6 +581,13 @@ static void lockup_detector_reconfigure(void)
 	__lockup_detector_cleanup();
 }
 
+void lockup_detector_reconfigure(void)
+{
+	mutex_lock(&watchdog_mutex);
+	__lockup_detector_reconfigure();
+	mutex_unlock(&watchdog_mutex);
+}
+
 /*
  * Create the watchdog thread infrastructure and configure the detector(s).
  *
@@ -601,13 +608,13 @@ static __init void lockup_detector_setup(void)
 		return;
 
 	mutex_lock(&watchdog_mutex);
-	lockup_detector_reconfigure();
+	__lockup_detector_reconfigure();
 	softlockup_initialized = true;
 	mutex_unlock(&watchdog_mutex);
 }
 
 #else /* CONFIG_SOFTLOCKUP_DETECTOR */
-static void lockup_detector_reconfigure(void)
+static void __lockup_detector_reconfigure(void)
 {
 	cpus_read_lock();
 	watchdog_nmi_stop();
@@ -615,9 +622,13 @@ static void lockup_detector_reconfigure(void)
 	watchdog_nmi_start();
 	cpus_read_unlock();
 }
+void lockup_detector_reconfigure(void)
+{
+	__lockup_detector_reconfigure();
+}
 static inline void lockup_detector_setup(void)
 {
-	lockup_detector_reconfigure();
+	__lockup_detector_reconfigure();
 }
 #endif /* !CONFIG_SOFTLOCKUP_DETECTOR */
 
@@ -657,7 +668,7 @@ static void proc_watchdog_update(void)
 {
 	/* Remove impossible cpus to keep sysctl output clean. */
 	cpumask_and(&watchdog_cpumask, &watchdog_cpumask, cpu_possible_mask);
-	lockup_detector_reconfigure();
+	__lockup_detector_reconfigure();
 }
 
 /*
diff --git linux-libre-4.19.255-gnu1/lib/list_debug.c linux-libre-4.19.256-gnu1/lib/list_debug.c
index 5d5424b51b74..413daa72a3d8 100644
--- linux-libre-4.19.255-gnu1/lib/list_debug.c
+++ linux-libre-4.19.256-gnu1/lib/list_debug.c
@@ -20,7 +20,11 @@
 bool __list_add_valid(struct list_head *new, struct list_head *prev,
 		      struct list_head *next)
 {
-	if (CHECK_DATA_CORRUPTION(next->prev != prev,
+	if (CHECK_DATA_CORRUPTION(prev == NULL,
+			"list_add corruption. prev is NULL.\n") ||
+	    CHECK_DATA_CORRUPTION(next == NULL,
+			"list_add corruption. next is NULL.\n") ||
+	    CHECK_DATA_CORRUPTION(next->prev != prev,
 			"list_add corruption. next->prev should be prev (%px), but was %px. (next=%px).\n",
 			prev, next->prev, next) ||
 	    CHECK_DATA_CORRUPTION(prev->next != next,
@@ -42,7 +46,11 @@ bool __list_del_entry_valid(struct list_head *entry)
 	prev = entry->prev;
 	next = entry->next;
 
-	if (CHECK_DATA_CORRUPTION(next == LIST_POISON1,
+	if (CHECK_DATA_CORRUPTION(next == NULL,
+			"list_del corruption, %px->next is NULL\n", entry) ||
+	    CHECK_DATA_CORRUPTION(prev == NULL,
+			"list_del corruption, %px->prev is NULL\n", entry) ||
+	    CHECK_DATA_CORRUPTION(next == LIST_POISON1,
 			"list_del corruption, %px->next is LIST_POISON1 (%px)\n",
 			entry, LIST_POISON1) ||
 	    CHECK_DATA_CORRUPTION(prev == LIST_POISON2,
diff --git linux-libre-4.19.255-gnu1/mm/mmap.c linux-libre-4.19.256-gnu1/mm/mmap.c
index bb8ba3258945..590840c3a3b5 100644
--- linux-libre-4.19.255-gnu1/mm/mmap.c
+++ linux-libre-4.19.256-gnu1/mm/mmap.c
@@ -1821,7 +1821,6 @@ unmap_and_free_vma:
 
 	/* Undo any partial mapping done by a device driver. */
 	unmap_region(mm, vma, prev, vma->vm_start, vma->vm_end);
-	charged = 0;
 	if (vm_flags & VM_SHARED)
 		mapping_unmap_writable(file->f_mapping);
 allow_write_and_free_vma:
diff --git linux-libre-4.19.255-gnu1/net/9p/client.c linux-libre-4.19.256-gnu1/net/9p/client.c
index bb0a43b8a6b0..98301add20f4 100644
--- linux-libre-4.19.255-gnu1/net/9p/client.c
+++ linux-libre-4.19.256-gnu1/net/9p/client.c
@@ -908,16 +908,13 @@ static struct p9_fid *p9_fid_create(struct p9_client *clnt)
 	struct p9_fid *fid;
 
 	p9_debug(P9_DEBUG_FID, "clnt %p\n", clnt);
-	fid = kmalloc(sizeof(struct p9_fid), GFP_KERNEL);
+	fid = kzalloc(sizeof(struct p9_fid), GFP_KERNEL);
 	if (!fid)
 		return NULL;
 
-	memset(&fid->qid, 0, sizeof(struct p9_qid));
 	fid->mode = -1;
 	fid->uid = current_fsuid();
 	fid->clnt = clnt;
-	fid->rdir = NULL;
-	fid->fid = 0;
 
 	idr_preload(GFP_KERNEL);
 	spin_lock_irq(&clnt->lock);
diff --git linux-libre-4.19.255-gnu1/net/bluetooth/l2cap_core.c linux-libre-4.19.256-gnu1/net/bluetooth/l2cap_core.c
index 709cceef6728..0dfc47adccb1 100644
--- linux-libre-4.19.255-gnu1/net/bluetooth/l2cap_core.c
+++ linux-libre-4.19.256-gnu1/net/bluetooth/l2cap_core.c
@@ -1804,11 +1804,11 @@ static struct l2cap_chan *l2cap_global_chan_by_psm(int state, __le16 psm,
 						   bdaddr_t *dst,
 						   u8 link_type)
 {
-	struct l2cap_chan *c, *c1 = NULL;
+	struct l2cap_chan *c, *tmp, *c1 = NULL;
 
 	read_lock(&chan_list_lock);
 
-	list_for_each_entry(c, &chan_list, global_l) {
+	list_for_each_entry_safe(c, tmp, &chan_list, global_l) {
 		if (state && c->state != state)
 			continue;
 
@@ -1827,11 +1827,10 @@ static struct l2cap_chan *l2cap_global_chan_by_psm(int state, __le16 psm,
 			dst_match = !bacmp(&c->dst, dst);
 			if (src_match && dst_match) {
 				c = l2cap_chan_hold_unless_zero(c);
-				if (!c)
-					continue;
-
-				read_unlock(&chan_list_lock);
-				return c;
+				if (c) {
+					read_unlock(&chan_list_lock);
+					return c;
+				}
 			}
 
 			/* Closest match */
diff --git linux-libre-4.19.255-gnu1/net/dccp/proto.c linux-libre-4.19.256-gnu1/net/dccp/proto.c
index 43733accf58e..dbbcf50aea35 100644
--- linux-libre-4.19.255-gnu1/net/dccp/proto.c
+++ linux-libre-4.19.256-gnu1/net/dccp/proto.c
@@ -769,11 +769,6 @@ int dccp_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
 
 	lock_sock(sk);
 
-	if (dccp_qpolicy_full(sk)) {
-		rc = -EAGAIN;
-		goto out_release;
-	}
-
 	timeo = sock_sndtimeo(sk, noblock);
 
 	/*
@@ -792,6 +787,11 @@ int dccp_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
 	if (skb == NULL)
 		goto out_release;
 
+	if (dccp_qpolicy_full(sk)) {
+		rc = -EAGAIN;
+		goto out_discard;
+	}
+
 	if (sk->sk_state == DCCP_CLOSED) {
 		rc = -ENOTCONN;
 		goto out_discard;
diff --git linux-libre-4.19.255-gnu1/net/ipv4/tcp_output.c linux-libre-4.19.256-gnu1/net/ipv4/tcp_output.c
index 3090b61e4edd..35bf58599223 100644
--- linux-libre-4.19.255-gnu1/net/ipv4/tcp_output.c
+++ linux-libre-4.19.256-gnu1/net/ipv4/tcp_output.c
@@ -2856,7 +2856,7 @@ int __tcp_retransmit_skb(struct sock *sk, struct sk_buff *skb, int segs)
 	struct tcp_sock *tp = tcp_sk(sk);
 	unsigned int cur_mss;
 	int diff, len, err;
-
+	int avail_wnd;
 
 	/* Inconclusive MTU probe */
 	if (icsk->icsk_mtup.probe_size)
@@ -2886,17 +2886,25 @@ int __tcp_retransmit_skb(struct sock *sk, struct sk_buff *skb, int segs)
 		return -EHOSTUNREACH; /* Routing failure or similar. */
 
 	cur_mss = tcp_current_mss(sk);
+	avail_wnd = tcp_wnd_end(tp) - TCP_SKB_CB(skb)->seq;
 
 	/* If receiver has shrunk his window, and skb is out of
 	 * new window, do not retransmit it. The exception is the
 	 * case, when window is shrunk to zero. In this case
-	 * our retransmit serves as a zero window probe.
+	 * our retransmit of one segment serves as a zero window probe.
 	 */
-	if (!before(TCP_SKB_CB(skb)->seq, tcp_wnd_end(tp)) &&
-	    TCP_SKB_CB(skb)->seq != tp->snd_una)
-		return -EAGAIN;
+	if (avail_wnd <= 0) {
+		if (TCP_SKB_CB(skb)->seq != tp->snd_una)
+			return -EAGAIN;
+		avail_wnd = cur_mss;
+	}
 
 	len = cur_mss * segs;
+	if (len > avail_wnd) {
+		len = rounddown(avail_wnd, cur_mss);
+		if (!len)
+			len = avail_wnd;
+	}
 	if (skb->len > len) {
 		if (tcp_fragment(sk, TCP_FRAG_IN_RTX_QUEUE, skb, len,
 				 cur_mss, GFP_ATOMIC))
@@ -2910,8 +2918,9 @@ int __tcp_retransmit_skb(struct sock *sk, struct sk_buff *skb, int segs)
 		diff -= tcp_skb_pcount(skb);
 		if (diff)
 			tcp_adjust_pcount(sk, skb, diff);
-		if (skb->len < cur_mss)
-			tcp_retrans_try_collapse(sk, skb, cur_mss);
+		avail_wnd = min_t(int, avail_wnd, cur_mss);
+		if (skb->len < avail_wnd)
+			tcp_retrans_try_collapse(sk, skb, avail_wnd);
 	}
 
 	/* RFC3168, section 6.1.1.1. ECN fallback */
@@ -3070,11 +3079,12 @@ void tcp_xmit_retransmit_queue(struct sock *sk)
  */
 void sk_forced_mem_schedule(struct sock *sk, int size)
 {
-	int amt;
+	int delta, amt;
 
-	if (size <= sk->sk_forward_alloc)
+	delta = size - sk->sk_forward_alloc;
+	if (delta <= 0)
 		return;
-	amt = sk_mem_pages(size);
+	amt = sk_mem_pages(delta);
 	sk->sk_forward_alloc += amt * SK_MEM_QUANTUM;
 	sk_memory_allocated_add(sk, amt);
 
diff --git linux-libre-4.19.255-gnu1/net/netfilter/nf_tables_api.c linux-libre-4.19.256-gnu1/net/netfilter/nf_tables_api.c
index ab68076d2cba..079f76849693 100644
--- linux-libre-4.19.255-gnu1/net/netfilter/nf_tables_api.c
+++ linux-libre-4.19.256-gnu1/net/netfilter/nf_tables_api.c
@@ -96,6 +96,7 @@ static struct nft_trans *nft_trans_alloc_gfp(const struct nft_ctx *ctx,
 	if (trans == NULL)
 		return NULL;
 
+	INIT_LIST_HEAD(&trans->list);
 	trans->msg_type = msg_type;
 	trans->ctx	= *ctx;
 
@@ -3039,6 +3040,7 @@ static struct nft_set *nft_set_lookup_byhandle(const struct nft_table *table,
 }
 
 static struct nft_set *nft_set_lookup_byid(const struct net *net,
+					   const struct nft_table *table,
 					   const struct nlattr *nla, u8 genmask)
 {
 	struct nft_trans *trans;
@@ -3049,6 +3051,7 @@ static struct nft_set *nft_set_lookup_byid(const struct net *net,
 			struct nft_set *set = nft_trans_set(trans);
 
 			if (id == nft_trans_set_id(trans) &&
+			    set->table == table &&
 			    nft_active_genmask(set, genmask))
 				return set;
 		}
@@ -3069,7 +3072,7 @@ struct nft_set *nft_set_lookup_global(const struct net *net,
 		if (!nla_set_id)
 			return set;
 
-		set = nft_set_lookup_byid(net, nla_set_id, genmask);
+		set = nft_set_lookup_byid(net, table, nla_set_id, genmask);
 	}
 	return set;
 }
@@ -3095,7 +3098,7 @@ cont:
 		list_for_each_entry(i, &ctx->table->sets, list) {
 			int tmp;
 
-			if (!nft_is_active_next(ctx->net, set))
+			if (!nft_is_active_next(ctx->net, i))
 				continue;
 			if (!sscanf(i->name, name, &tmp))
 				continue;
diff --git linux-libre-4.19.255-gnu1/net/rds/ib_recv.c linux-libre-4.19.256-gnu1/net/rds/ib_recv.c
index 2f16146e4ec9..18e0e3cba1ac 100644
--- linux-libre-4.19.255-gnu1/net/rds/ib_recv.c
+++ linux-libre-4.19.256-gnu1/net/rds/ib_recv.c
@@ -362,6 +362,7 @@ static int acquire_refill(struct rds_connection *conn)
 static void release_refill(struct rds_connection *conn)
 {
 	clear_bit(RDS_RECV_REFILL, &conn->c_flags);
+	smp_mb__after_atomic();
 
 	/* We don't use wait_on_bit()/wake_up_bit() because our waking is in a
 	 * hot path and finding waiters is very rare.  We don't want to walk
diff --git linux-libre-4.19.255-gnu1/net/rose/af_rose.c linux-libre-4.19.256-gnu1/net/rose/af_rose.c
index d00a0ef39a56..03a1ee221112 100644
--- linux-libre-4.19.255-gnu1/net/rose/af_rose.c
+++ linux-libre-4.19.256-gnu1/net/rose/af_rose.c
@@ -194,6 +194,7 @@ static void rose_kill_by_device(struct net_device *dev)
 			rose_disconnect(s, ENETUNREACH, ROSE_OUT_OF_ORDER, 0);
 			if (rose->neighbour)
 				rose->neighbour->use--;
+			dev_put(rose->device);
 			rose->device = NULL;
 		}
 	}
@@ -594,6 +595,8 @@ static struct sock *rose_make_new(struct sock *osk)
 	rose->idle	= orose->idle;
 	rose->defer	= orose->defer;
 	rose->device	= orose->device;
+	if (rose->device)
+		dev_hold(rose->device);
 	rose->qbitincl	= orose->qbitincl;
 
 	return sk;
@@ -647,6 +650,7 @@ static int rose_release(struct socket *sock)
 		break;
 	}
 
+	dev_put(rose->device);
 	sock->sk = NULL;
 	release_sock(sk);
 	sock_put(sk);
@@ -721,7 +725,6 @@ static int rose_connect(struct socket *sock, struct sockaddr *uaddr, int addr_le
 	struct rose_sock *rose = rose_sk(sk);
 	struct sockaddr_rose *addr = (struct sockaddr_rose *)uaddr;
 	unsigned char cause, diagnostic;
-	struct net_device *dev;
 	ax25_uid_assoc *user;
 	int n, err = 0;
 
@@ -778,9 +781,12 @@ static int rose_connect(struct socket *sock, struct sockaddr *uaddr, int addr_le
 	}
 
 	if (sock_flag(sk, SOCK_ZAPPED)) {	/* Must bind first - autobinding in this may or may not work */
+		struct net_device *dev;
+
 		sock_reset_flag(sk, SOCK_ZAPPED);
 
-		if ((dev = rose_dev_first()) == NULL) {
+		dev = rose_dev_first();
+		if (!dev) {
 			err = -ENETUNREACH;
 			goto out_release;
 		}
@@ -788,6 +794,7 @@ static int rose_connect(struct socket *sock, struct sockaddr *uaddr, int addr_le
 		user = ax25_findbyuid(current_euid());
 		if (!user) {
 			err = -EINVAL;
+			dev_put(dev);
 			goto out_release;
 		}
 
diff --git linux-libre-4.19.255-gnu1/net/rose/rose_route.c linux-libre-4.19.256-gnu1/net/rose/rose_route.c
index 46ae92d70324..5671853bef83 100644
--- linux-libre-4.19.255-gnu1/net/rose/rose_route.c
+++ linux-libre-4.19.256-gnu1/net/rose/rose_route.c
@@ -616,6 +616,8 @@ struct net_device *rose_dev_first(void)
 			if (first == NULL || strncmp(dev->name, first->name, 3) < 0)
 				first = dev;
 	}
+	if (first)
+		dev_hold(first);
 	rcu_read_unlock();
 
 	return first;
diff --git linux-libre-4.19.255-gnu1/net/sched/cls_route.c linux-libre-4.19.256-gnu1/net/sched/cls_route.c
index 0256777b838e..4c7fa1cfd8e3 100644
--- linux-libre-4.19.255-gnu1/net/sched/cls_route.c
+++ linux-libre-4.19.256-gnu1/net/sched/cls_route.c
@@ -427,6 +427,11 @@ static int route4_set_parms(struct net *net, struct tcf_proto *tp,
 			return -EINVAL;
 	}
 
+	if (!nhandle) {
+		NL_SET_ERR_MSG(extack, "Replacing with handle of 0 is invalid");
+		return -EINVAL;
+	}
+
 	h1 = to_hash(nhandle);
 	b = rtnl_dereference(head->table[h1]);
 	if (!b) {
@@ -480,6 +485,11 @@ static int route4_change(struct net *net, struct sk_buff *in_skb,
 	int err;
 	bool new = true;
 
+	if (!handle) {
+		NL_SET_ERR_MSG(extack, "Creating with handle of 0 is invalid");
+		return -EINVAL;
+	}
+
 	if (opt == NULL)
 		return handle ? -EINVAL : 0;
 
@@ -528,7 +538,7 @@ static int route4_change(struct net *net, struct sk_buff *in_skb,
 	rcu_assign_pointer(f->next, f1);
 	rcu_assign_pointer(*fp, f);
 
-	if (fold && fold->handle && f->handle != fold->handle) {
+	if (fold) {
 		th = to_hash(fold->handle);
 		h = from_hash(fold->handle >> 16);
 		b = rtnl_dereference(head->table[th]);
diff --git linux-libre-4.19.255-gnu1/net/sunrpc/backchannel_rqst.c linux-libre-4.19.256-gnu1/net/sunrpc/backchannel_rqst.c
index 3c15a99b9700..e41427e1740d 100644
--- linux-libre-4.19.255-gnu1/net/sunrpc/backchannel_rqst.c
+++ linux-libre-4.19.256-gnu1/net/sunrpc/backchannel_rqst.c
@@ -69,6 +69,17 @@ static void xprt_free_allocation(struct rpc_rqst *req)
 	kfree(req);
 }
 
+static void xprt_bc_reinit_xdr_buf(struct xdr_buf *buf)
+{
+	buf->head[0].iov_len = PAGE_SIZE;
+	buf->tail[0].iov_len = 0;
+	buf->pages = NULL;
+	buf->page_len = 0;
+	buf->flags = 0;
+	buf->len = 0;
+	buf->buflen = PAGE_SIZE;
+}
+
 static int xprt_alloc_xdr_buf(struct xdr_buf *buf, gfp_t gfp_flags)
 {
 	struct page *page;
@@ -291,6 +302,9 @@ void xprt_free_bc_rqst(struct rpc_rqst *req)
 	 */
 	spin_lock_bh(&xprt->bc_pa_lock);
 	if (xprt_need_to_requeue(xprt)) {
+		xprt_bc_reinit_xdr_buf(&req->rq_snd_buf);
+		xprt_bc_reinit_xdr_buf(&req->rq_rcv_buf);
+		req->rq_rcv_buf.len = PAGE_SIZE;
 		list_add_tail(&req->rq_bc_pa_list, &xprt->bc_pa_list);
 		xprt->bc_alloc_count++;
 		req = NULL;
diff --git linux-libre-4.19.255-gnu1/net/vmw_vsock/af_vsock.c linux-libre-4.19.256-gnu1/net/vmw_vsock/af_vsock.c
index 22931a5f62bc..d55a47858d6d 100644
--- linux-libre-4.19.255-gnu1/net/vmw_vsock/af_vsock.c
+++ linux-libre-4.19.256-gnu1/net/vmw_vsock/af_vsock.c
@@ -1118,6 +1118,7 @@ static void vsock_connect_timeout(struct work_struct *work)
 	if (sk->sk_state == TCP_SYN_SENT &&
 	    (sk->sk_shutdown != SHUTDOWN_MASK)) {
 		sk->sk_state = TCP_CLOSE;
+		sk->sk_socket->state = SS_UNCONNECTED;
 		sk->sk_err = ETIMEDOUT;
 		sk->sk_error_report(sk);
 		vsock_transport_cancel_pkt(vsk);
@@ -1215,7 +1216,14 @@ static int vsock_stream_connect(struct socket *sock, struct sockaddr *addr,
 			 * timeout fires.
 			 */
 			sock_hold(sk);
-			schedule_delayed_work(&vsk->connect_work, timeout);
+
+			/* If the timeout function is already scheduled,
+			 * reschedule it, then ungrab the socket refcount to
+			 * keep it balanced.
+			 */
+			if (mod_delayed_work(system_wq, &vsk->connect_work,
+					     timeout))
+				sock_put(sk);
 
 			/* Skip ahead to preserve error code set above. */
 			goto out_wait;
diff --git linux-libre-4.19.255-gnu1/scripts/Makefile.gcc-plugins linux-libre-4.19.256-gnu1/scripts/Makefile.gcc-plugins
index 93ca13e4f8f9..66bbe77ed757 100644
--- linux-libre-4.19.255-gnu1/scripts/Makefile.gcc-plugins
+++ linux-libre-4.19.256-gnu1/scripts/Makefile.gcc-plugins
@@ -6,7 +6,7 @@ gcc-plugin-$(CONFIG_GCC_PLUGIN_LATENT_ENTROPY)	+= latent_entropy_plugin.so
 gcc-plugin-cflags-$(CONFIG_GCC_PLUGIN_LATENT_ENTROPY)		\
 		+= -DLATENT_ENTROPY_PLUGIN
 ifdef CONFIG_GCC_PLUGIN_LATENT_ENTROPY
-    DISABLE_LATENT_ENTROPY_PLUGIN += -fplugin-arg-latent_entropy_plugin-disable
+    DISABLE_LATENT_ENTROPY_PLUGIN += -fplugin-arg-latent_entropy_plugin-disable -ULATENT_ENTROPY_PLUGIN
 endif
 export DISABLE_LATENT_ENTROPY_PLUGIN
 
diff --git linux-libre-4.19.255-gnu1/scripts/faddr2line linux-libre-4.19.256-gnu1/scripts/faddr2line
index 2571caac3156..70f8c3ecd555 100755
--- linux-libre-4.19.255-gnu1/scripts/faddr2line
+++ linux-libre-4.19.256-gnu1/scripts/faddr2line
@@ -112,7 +112,9 @@ __faddr2line() {
 	# section offsets.
 	local file_type=$(${READELF} --file-header $objfile |
 		${AWK} '$1 == "Type:" { print $2; exit }')
-	[[ $file_type = "EXEC" ]] && is_vmlinux=1
+	if [[ $file_type = "EXEC" ]] || [[ $file_type == "DYN" ]]; then
+		is_vmlinux=1
+	fi
 
 	# Go through each of the object's symbols which match the func name.
 	# In rare cases there might be duplicates, in which case we print all
diff --git linux-libre-4.19.255-gnu1/security/apparmor/apparmorfs.c linux-libre-4.19.256-gnu1/security/apparmor/apparmorfs.c
index 900c865b9e5f..8868c475205f 100644
--- linux-libre-4.19.255-gnu1/security/apparmor/apparmorfs.c
+++ linux-libre-4.19.256-gnu1/security/apparmor/apparmorfs.c
@@ -403,7 +403,7 @@ static struct aa_loaddata *aa_simple_write_to_buffer(const char __user *userbuf,
 
 	data->size = copy_size;
 	if (copy_from_user(data->data, userbuf, copy_size)) {
-		kvfree(data);
+		aa_put_loaddata(data);
 		return ERR_PTR(-EFAULT);
 	}
 
diff --git linux-libre-4.19.255-gnu1/security/apparmor/audit.c linux-libre-4.19.256-gnu1/security/apparmor/audit.c
index 70b9730c0be6..86ce3ec18a8a 100644
--- linux-libre-4.19.255-gnu1/security/apparmor/audit.c
+++ linux-libre-4.19.256-gnu1/security/apparmor/audit.c
@@ -143,7 +143,7 @@ int aa_audit(int type, struct aa_profile *profile, struct common_audit_data *sa,
 	}
 	if (AUDIT_MODE(profile) == AUDIT_QUIET ||
 	    (type == AUDIT_APPARMOR_DENIED &&
-	     AUDIT_MODE(profile) == AUDIT_QUIET))
+	     AUDIT_MODE(profile) == AUDIT_QUIET_DENIED))
 		return aad(sa)->error;
 
 	if (KILL_MODE(profile) && type == AUDIT_APPARMOR_DENIED)
diff --git linux-libre-4.19.255-gnu1/security/apparmor/domain.c linux-libre-4.19.256-gnu1/security/apparmor/domain.c
index 13b33490e079..dad704825294 100644
--- linux-libre-4.19.255-gnu1/security/apparmor/domain.c
+++ linux-libre-4.19.256-gnu1/security/apparmor/domain.c
@@ -464,7 +464,7 @@ restart:
 				 * xattrs, or a longer match
 				 */
 				candidate = profile;
-				candidate_len = profile->xmatch_len;
+				candidate_len = max(count, profile->xmatch_len);
 				candidate_xattrs = ret;
 				conflict = false;
 			}
diff --git linux-libre-4.19.255-gnu1/security/apparmor/include/lib.h linux-libre-4.19.256-gnu1/security/apparmor/include/lib.h
index 6505e1ad9e23..a6d747dc148d 100644
--- linux-libre-4.19.255-gnu1/security/apparmor/include/lib.h
+++ linux-libre-4.19.256-gnu1/security/apparmor/include/lib.h
@@ -25,6 +25,11 @@
  */
 
 #define DEBUG_ON (aa_g_debug)
+/*
+ * split individual debug cases out in preparation for finer grained
+ * debug controls in the future.
+ */
+#define AA_DEBUG_LABEL DEBUG_ON
 #define dbg_printk(__fmt, __args...) pr_debug(__fmt, ##__args)
 #define AA_DEBUG(fmt, args...)						\
 	do {								\
diff --git linux-libre-4.19.255-gnu1/security/apparmor/include/policy.h linux-libre-4.19.256-gnu1/security/apparmor/include/policy.h
index 28c098fb6208..92fa4f610212 100644
--- linux-libre-4.19.255-gnu1/security/apparmor/include/policy.h
+++ linux-libre-4.19.256-gnu1/security/apparmor/include/policy.h
@@ -139,7 +139,7 @@ struct aa_profile {
 
 	const char *attach;
 	struct aa_dfa *xmatch;
-	int xmatch_len;
+	unsigned int xmatch_len;
 	enum audit_mode audit;
 	long mode;
 	u32 path_flags;
diff --git linux-libre-4.19.255-gnu1/security/apparmor/label.c linux-libre-4.19.256-gnu1/security/apparmor/label.c
index 5a80a16a7f75..fed6bd75fcc1 100644
--- linux-libre-4.19.255-gnu1/security/apparmor/label.c
+++ linux-libre-4.19.256-gnu1/security/apparmor/label.c
@@ -1641,9 +1641,9 @@ int aa_label_snxprint(char *str, size_t size, struct aa_ns *ns,
 	AA_BUG(!str && size != 0);
 	AA_BUG(!label);
 
-	if (flags & FLAG_ABS_ROOT) {
+	if (AA_DEBUG_LABEL && (flags & FLAG_ABS_ROOT)) {
 		ns = root_ns;
-		len = snprintf(str, size, "=");
+		len = snprintf(str, size, "_");
 		update_for_len(total, len, size, str);
 	} else if (!ns) {
 		ns = labels_ns(label);
@@ -1754,7 +1754,7 @@ void aa_label_xaudit(struct audit_buffer *ab, struct aa_ns *ns,
 	if (!use_label_hname(ns, label, flags) ||
 	    display_mode(ns, label, flags)) {
 		len  = aa_label_asxprint(&name, ns, label, flags, gfp);
-		if (len == -1) {
+		if (len < 0) {
 			AA_DEBUG("label print error");
 			return;
 		}
@@ -1782,7 +1782,7 @@ void aa_label_seq_xprint(struct seq_file *f, struct aa_ns *ns,
 		int len;
 
 		len = aa_label_asxprint(&str, ns, label, flags, gfp);
-		if (len == -1) {
+		if (len < 0) {
 			AA_DEBUG("label print error");
 			return;
 		}
@@ -1805,7 +1805,7 @@ void aa_label_xprintk(struct aa_ns *ns, struct aa_label *label, int flags,
 		int len;
 
 		len = aa_label_asxprint(&str, ns, label, flags, gfp);
-		if (len == -1) {
+		if (len < 0) {
 			AA_DEBUG("label print error");
 			return;
 		}
@@ -1905,7 +1905,8 @@ struct aa_label *aa_label_strn_parse(struct aa_label *base, const char *str,
 	AA_BUG(!str);
 
 	str = skipn_spaces(str, n);
-	if (str == NULL || (*str == '=' && base != &root_ns->unconfined->label))
+	if (str == NULL || (AA_DEBUG_LABEL && *str == '_' &&
+			    base != &root_ns->unconfined->label))
 		return ERR_PTR(-EINVAL);
 
 	len = label_count_strn_entries(str, end - str);
diff --git linux-libre-4.19.255-gnu1/security/apparmor/mount.c linux-libre-4.19.256-gnu1/security/apparmor/mount.c
index c1da22482bfb..85dc8a548c4b 100644
--- linux-libre-4.19.255-gnu1/security/apparmor/mount.c
+++ linux-libre-4.19.256-gnu1/security/apparmor/mount.c
@@ -232,7 +232,8 @@ static const char * const mnt_info_table[] = {
 	"failed srcname match",
 	"failed type match",
 	"failed flags match",
-	"failed data match"
+	"failed data match",
+	"failed perms check"
 };
 
 /*
@@ -287,8 +288,8 @@ static int do_match_mnt(struct aa_dfa *dfa, unsigned int start,
 			return 0;
 	}
 
-	/* failed at end of flags match */
-	return 4;
+	/* failed at perms check, don't confuse with flags match */
+	return 6;
 }
 
 
@@ -685,6 +686,7 @@ int aa_pivotroot(struct aa_label *label, const struct path *old_path,
 			aa_put_label(target);
 			goto out;
 		}
+		aa_put_label(target);
 	} else
 		/* already audited error */
 		error = PTR_ERR(target);
diff --git linux-libre-4.19.255-gnu1/security/selinux/ss/policydb.h linux-libre-4.19.256-gnu1/security/selinux/ss/policydb.h
index 215f8f30ac5a..2a479785ebd4 100644
--- linux-libre-4.19.255-gnu1/security/selinux/ss/policydb.h
+++ linux-libre-4.19.256-gnu1/security/selinux/ss/policydb.h
@@ -360,6 +360,8 @@ static inline int put_entry(const void *buf, size_t bytes, int num, struct polic
 {
 	size_t len = bytes * num;
 
+	if (len > fp->len)
+		return -EINVAL;
 	memcpy(fp->data, buf, len);
 	fp->data += len;
 	fp->len -= len;
diff --git linux-libre-4.19.255-gnu1/sound/core/info.c linux-libre-4.19.256-gnu1/sound/core/info.c
index 3fa8336794f8..2ac656db0b1c 100644
--- linux-libre-4.19.255-gnu1/sound/core/info.c
+++ linux-libre-4.19.256-gnu1/sound/core/info.c
@@ -127,9 +127,9 @@ static loff_t snd_info_entry_llseek(struct file *file, loff_t offset, int orig)
 	entry = data->entry;
 	mutex_lock(&entry->access);
 	if (entry->c.ops->llseek) {
-		offset = entry->c.ops->llseek(entry,
-					      data->file_private_data,
-					      file, offset, orig);
+		ret = entry->c.ops->llseek(entry,
+					   data->file_private_data,
+					   file, offset, orig);
 		goto out;
 	}
 
diff --git linux-libre-4.19.255-gnu1/sound/core/misc.c linux-libre-4.19.256-gnu1/sound/core/misc.c
index 0f818d593c9e..d100feba26b5 100644
--- linux-libre-4.19.255-gnu1/sound/core/misc.c
+++ linux-libre-4.19.256-gnu1/sound/core/misc.c
@@ -25,6 +25,7 @@
 #include <linux/time.h>
 #include <linux/slab.h>
 #include <linux/ioport.h>
+#include <linux/fs.h>
 #include <sound/core.h>
 
 #ifdef CONFIG_SND_DEBUG
@@ -160,3 +161,96 @@ snd_pci_quirk_lookup(struct pci_dev *pci, const struct snd_pci_quirk *list)
 }
 EXPORT_SYMBOL(snd_pci_quirk_lookup);
 #endif
+
+/*
+ * Deferred async signal helpers
+ *
+ * Below are a few helper functions to wrap the async signal handling
+ * in the deferred work.  The main purpose is to avoid the messy deadlock
+ * around tasklist_lock and co at the kill_fasync() invocation.
+ * fasync_helper() and kill_fasync() are replaced with snd_fasync_helper()
+ * and snd_kill_fasync(), respectively.  In addition, snd_fasync_free() has
+ * to be called at releasing the relevant file object.
+ */
+struct snd_fasync {
+	struct fasync_struct *fasync;
+	int signal;
+	int poll;
+	int on;
+	struct list_head list;
+};
+
+static DEFINE_SPINLOCK(snd_fasync_lock);
+static LIST_HEAD(snd_fasync_list);
+
+static void snd_fasync_work_fn(struct work_struct *work)
+{
+	struct snd_fasync *fasync;
+
+	spin_lock_irq(&snd_fasync_lock);
+	while (!list_empty(&snd_fasync_list)) {
+		fasync = list_first_entry(&snd_fasync_list, struct snd_fasync, list);
+		list_del_init(&fasync->list);
+		spin_unlock_irq(&snd_fasync_lock);
+		if (fasync->on)
+			kill_fasync(&fasync->fasync, fasync->signal, fasync->poll);
+		spin_lock_irq(&snd_fasync_lock);
+	}
+	spin_unlock_irq(&snd_fasync_lock);
+}
+
+static DECLARE_WORK(snd_fasync_work, snd_fasync_work_fn);
+
+int snd_fasync_helper(int fd, struct file *file, int on,
+		      struct snd_fasync **fasyncp)
+{
+	struct snd_fasync *fasync = NULL;
+
+	if (on) {
+		fasync = kzalloc(sizeof(*fasync), GFP_KERNEL);
+		if (!fasync)
+			return -ENOMEM;
+		INIT_LIST_HEAD(&fasync->list);
+	}
+
+	spin_lock_irq(&snd_fasync_lock);
+	if (*fasyncp) {
+		kfree(fasync);
+		fasync = *fasyncp;
+	} else {
+		if (!fasync) {
+			spin_unlock_irq(&snd_fasync_lock);
+			return 0;
+		}
+		*fasyncp = fasync;
+	}
+	fasync->on = on;
+	spin_unlock_irq(&snd_fasync_lock);
+	return fasync_helper(fd, file, on, &fasync->fasync);
+}
+EXPORT_SYMBOL_GPL(snd_fasync_helper);
+
+void snd_kill_fasync(struct snd_fasync *fasync, int signal, int poll)
+{
+	unsigned long flags;
+
+	if (!fasync || !fasync->on)
+		return;
+	spin_lock_irqsave(&snd_fasync_lock, flags);
+	fasync->signal = signal;
+	fasync->poll = poll;
+	list_move(&fasync->list, &snd_fasync_list);
+	schedule_work(&snd_fasync_work);
+	spin_unlock_irqrestore(&snd_fasync_lock, flags);
+}
+EXPORT_SYMBOL_GPL(snd_kill_fasync);
+
+void snd_fasync_free(struct snd_fasync *fasync)
+{
+	if (!fasync)
+		return;
+	fasync->on = 0;
+	flush_work(&snd_fasync_work);
+	kfree(fasync);
+}
+EXPORT_SYMBOL_GPL(snd_fasync_free);
diff --git linux-libre-4.19.255-gnu1/sound/core/timer.c linux-libre-4.19.256-gnu1/sound/core/timer.c
index 4920ec4f4594..f0e8b98f346e 100644
--- linux-libre-4.19.255-gnu1/sound/core/timer.c
+++ linux-libre-4.19.256-gnu1/sound/core/timer.c
@@ -75,7 +75,7 @@ struct snd_timer_user {
 	unsigned int filter;
 	struct timespec tstamp;		/* trigger tstamp */
 	wait_queue_head_t qchange_sleep;
-	struct fasync_struct *fasync;
+	struct snd_fasync *fasync;
 	struct mutex ioctl_lock;
 };
 
@@ -1306,7 +1306,7 @@ static void snd_timer_user_interrupt(struct snd_timer_instance *timeri,
 	}
       __wake:
 	spin_unlock(&tu->qlock);
-	kill_fasync(&tu->fasync, SIGIO, POLL_IN);
+	snd_kill_fasync(tu->fasync, SIGIO, POLL_IN);
 	wake_up(&tu->qchange_sleep);
 }
 
@@ -1343,7 +1343,7 @@ static void snd_timer_user_ccallback(struct snd_timer_instance *timeri,
 	spin_lock_irqsave(&tu->qlock, flags);
 	snd_timer_user_append_to_tqueue(tu, &r1);
 	spin_unlock_irqrestore(&tu->qlock, flags);
-	kill_fasync(&tu->fasync, SIGIO, POLL_IN);
+	snd_kill_fasync(tu->fasync, SIGIO, POLL_IN);
 	wake_up(&tu->qchange_sleep);
 }
 
@@ -1410,7 +1410,7 @@ static void snd_timer_user_tinterrupt(struct snd_timer_instance *timeri,
 	spin_unlock(&tu->qlock);
 	if (append == 0)
 		return;
-	kill_fasync(&tu->fasync, SIGIO, POLL_IN);
+	snd_kill_fasync(tu->fasync, SIGIO, POLL_IN);
 	wake_up(&tu->qchange_sleep);
 }
 
@@ -1476,6 +1476,7 @@ static int snd_timer_user_release(struct inode *inode, struct file *file)
 		if (tu->timeri)
 			snd_timer_close(tu->timeri);
 		mutex_unlock(&tu->ioctl_lock);
+		snd_fasync_free(tu->fasync);
 		kfree(tu->queue);
 		kfree(tu->tqueue);
 		kfree(tu);
@@ -2027,7 +2028,7 @@ static int snd_timer_user_fasync(int fd, struct file * file, int on)
 	struct snd_timer_user *tu;
 
 	tu = file->private_data;
-	return fasync_helper(fd, file, on, &tu->fasync);
+	return snd_fasync_helper(fd, file, on, &tu->fasync);
 }
 
 static ssize_t snd_timer_user_read(struct file *file, char __user *buffer,
diff --git linux-libre-4.19.255-gnu1/sound/pci/hda/patch_cirrus.c linux-libre-4.19.256-gnu1/sound/pci/hda/patch_cirrus.c
index a7f91be45194..5bd7b9b0e568 100644
--- linux-libre-4.19.255-gnu1/sound/pci/hda/patch_cirrus.c
+++ linux-libre-4.19.256-gnu1/sound/pci/hda/patch_cirrus.c
@@ -409,6 +409,7 @@ static const struct snd_pci_quirk cs420x_fixup_tbl[] = {
 
 	/* codec SSID */
 	SND_PCI_QUIRK(0x106b, 0x0600, "iMac 14,1", CS420X_IMAC27_122),
+	SND_PCI_QUIRK(0x106b, 0x0900, "iMac 12,1", CS420X_IMAC27_122),
 	SND_PCI_QUIRK(0x106b, 0x1c00, "MacBookPro 8,1", CS420X_MBP81),
 	SND_PCI_QUIRK(0x106b, 0x2000, "iMac 12,2", CS420X_IMAC27_122),
 	SND_PCI_QUIRK(0x106b, 0x2800, "MacBookPro 10,1", CS420X_MBP101),
diff --git linux-libre-4.19.255-gnu1/sound/pci/hda/patch_conexant.c linux-libre-4.19.256-gnu1/sound/pci/hda/patch_conexant.c
index b4cd42643e1e..b1a8ee8cf17e 100644
--- linux-libre-4.19.255-gnu1/sound/pci/hda/patch_conexant.c
+++ linux-libre-4.19.256-gnu1/sound/pci/hda/patch_conexant.c
@@ -210,6 +210,7 @@ enum {
 	CXT_PINCFG_LEMOTE_A1205,
 	CXT_PINCFG_COMPAQ_CQ60,
 	CXT_FIXUP_STEREO_DMIC,
+	CXT_PINCFG_LENOVO_NOTEBOOK,
 	CXT_FIXUP_INC_MIC_BOOST,
 	CXT_FIXUP_HEADPHONE_MIC_PIN,
 	CXT_FIXUP_HEADPHONE_MIC,
@@ -750,6 +751,14 @@ static const struct hda_fixup cxt_fixups[] = {
 		.type = HDA_FIXUP_FUNC,
 		.v.func = cxt_fixup_stereo_dmic,
 	},
+	[CXT_PINCFG_LENOVO_NOTEBOOK] = {
+		.type = HDA_FIXUP_PINS,
+		.v.pins = (const struct hda_pintbl[]) {
+			{ 0x1a, 0x05d71030 },
+			{ }
+		},
+		.chain_id = CXT_FIXUP_STEREO_DMIC,
+	},
 	[CXT_FIXUP_INC_MIC_BOOST] = {
 		.type = HDA_FIXUP_FUNC,
 		.v.func = cxt5066_increase_mic_boost,
@@ -943,7 +952,7 @@ static const struct snd_pci_quirk cxt5066_fixups[] = {
 	SND_PCI_QUIRK(0x17aa, 0x3905, "Lenovo G50-30", CXT_FIXUP_STEREO_DMIC),
 	SND_PCI_QUIRK(0x17aa, 0x390b, "Lenovo G50-80", CXT_FIXUP_STEREO_DMIC),
 	SND_PCI_QUIRK(0x17aa, 0x3975, "Lenovo U300s", CXT_FIXUP_STEREO_DMIC),
-	SND_PCI_QUIRK(0x17aa, 0x3977, "Lenovo IdeaPad U310", CXT_FIXUP_STEREO_DMIC),
+	SND_PCI_QUIRK(0x17aa, 0x3977, "Lenovo IdeaPad U310", CXT_PINCFG_LENOVO_NOTEBOOK),
 	SND_PCI_QUIRK(0x17aa, 0x3978, "Lenovo G50-70", CXT_FIXUP_STEREO_DMIC),
 	SND_PCI_QUIRK(0x17aa, 0x397b, "Lenovo S205", CXT_FIXUP_STEREO_DMIC),
 	SND_PCI_QUIRK_VENDOR(0x17aa, "Thinkpad", CXT_FIXUP_THINKPAD_ACPI),
diff --git linux-libre-4.19.255-gnu1/sound/soc/codecs/da7210.c linux-libre-4.19.256-gnu1/sound/soc/codecs/da7210.c
index e172913d04a4..efc5049c0796 100644
--- linux-libre-4.19.255-gnu1/sound/soc/codecs/da7210.c
+++ linux-libre-4.19.256-gnu1/sound/soc/codecs/da7210.c
@@ -1333,6 +1333,8 @@ static int __init da7210_modinit(void)
 	int ret = 0;
 #if IS_ENABLED(CONFIG_I2C)
 	ret = i2c_add_driver(&da7210_i2c_driver);
+	if (ret)
+		return ret;
 #endif
 #if defined(CONFIG_SPI_MASTER)
 	ret = spi_register_driver(&da7210_spi_driver);
diff --git linux-libre-4.19.255-gnu1/sound/soc/mediatek/mt6797/mt6797-mt6351.c linux-libre-4.19.256-gnu1/sound/soc/mediatek/mt6797/mt6797-mt6351.c
index b1558c57b9ca..0c49e1a9a897 100644
--- linux-libre-4.19.255-gnu1/sound/soc/mediatek/mt6797/mt6797-mt6351.c
+++ linux-libre-4.19.256-gnu1/sound/soc/mediatek/mt6797/mt6797-mt6351.c
@@ -179,7 +179,8 @@ static int mt6797_mt6351_dev_probe(struct platform_device *pdev)
 	if (!codec_node) {
 		dev_err(&pdev->dev,
 			"Property 'audio-codec' missing or invalid\n");
-		return -EINVAL;
+		ret = -EINVAL;
+		goto put_platform_node;
 	}
 	for (i = 0; i < card->num_links; i++) {
 		if (mt6797_mt6351_dai_links[i].codec_name)
@@ -192,6 +193,9 @@ static int mt6797_mt6351_dev_probe(struct platform_device *pdev)
 		dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",
 			__func__, ret);
 
+	of_node_put(codec_node);
+put_platform_node:
+	of_node_put(platform_node);
 	return ret;
 }
 
diff --git linux-libre-4.19.255-gnu1/sound/soc/mediatek/mt8173/mt8173-rt5650-rt5676.c linux-libre-4.19.256-gnu1/sound/soc/mediatek/mt8173/mt8173-rt5650-rt5676.c
index 242f99716c61..c37c962173d9 100644
--- linux-libre-4.19.255-gnu1/sound/soc/mediatek/mt8173/mt8173-rt5650-rt5676.c
+++ linux-libre-4.19.256-gnu1/sound/soc/mediatek/mt8173/mt8173-rt5650-rt5676.c
@@ -245,14 +245,16 @@ static int mt8173_rt5650_rt5676_dev_probe(struct platform_device *pdev)
 	if (!mt8173_rt5650_rt5676_codecs[0].of_node) {
 		dev_err(&pdev->dev,
 			"Property 'audio-codec' missing or invalid\n");
-		return -EINVAL;
+		ret = -EINVAL;
+		goto put_node;
 	}
 	mt8173_rt5650_rt5676_codecs[1].of_node =
 		of_parse_phandle(pdev->dev.of_node, "mediatek,audio-codec", 1);
 	if (!mt8173_rt5650_rt5676_codecs[1].of_node) {
 		dev_err(&pdev->dev,
 			"Property 'audio-codec' missing or invalid\n");
-		return -EINVAL;
+		ret = -EINVAL;
+		goto put_node;
 	}
 	mt8173_rt5650_rt5676_codec_conf[0].of_node =
 		mt8173_rt5650_rt5676_codecs[1].of_node;
@@ -265,7 +267,8 @@ static int mt8173_rt5650_rt5676_dev_probe(struct platform_device *pdev)
 	if (!mt8173_rt5650_rt5676_dais[DAI_LINK_HDMI_I2S].codec_of_node) {
 		dev_err(&pdev->dev,
 			"Property 'audio-codec' missing or invalid\n");
-		return -EINVAL;
+		ret = -EINVAL;
+		goto put_node;
 	}
 
 	card->dev = &pdev->dev;
@@ -275,6 +278,7 @@ static int mt8173_rt5650_rt5676_dev_probe(struct platform_device *pdev)
 		dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",
 			__func__, ret);
 
+put_node:
 	of_node_put(platform_node);
 	return ret;
 }
diff --git linux-libre-4.19.255-gnu1/sound/soc/mediatek/mt8173/mt8173-rt5650.c linux-libre-4.19.256-gnu1/sound/soc/mediatek/mt8173/mt8173-rt5650.c
index 14011a70bcc4..8b613f8627fa 100644
--- linux-libre-4.19.255-gnu1/sound/soc/mediatek/mt8173/mt8173-rt5650.c
+++ linux-libre-4.19.256-gnu1/sound/soc/mediatek/mt8173/mt8173-rt5650.c
@@ -260,7 +260,8 @@ static int mt8173_rt5650_dev_probe(struct platform_device *pdev)
 	if (!mt8173_rt5650_codecs[0].of_node) {
 		dev_err(&pdev->dev,
 			"Property 'audio-codec' missing or invalid\n");
-		return -EINVAL;
+		ret = -EINVAL;
+		goto put_platform_node;
 	}
 	mt8173_rt5650_codecs[1].of_node = mt8173_rt5650_codecs[0].of_node;
 
@@ -272,7 +273,7 @@ static int mt8173_rt5650_dev_probe(struct platform_device *pdev)
 			dev_err(&pdev->dev,
 				"%s codec_capture_dai name fail %d\n",
 				__func__, ret);
-			return ret;
+			goto put_platform_node;
 		}
 		mt8173_rt5650_codecs[1].dai_name = codec_capture_dai;
 	}
@@ -293,7 +294,8 @@ static int mt8173_rt5650_dev_probe(struct platform_device *pdev)
 	if (!mt8173_rt5650_dais[DAI_LINK_HDMI_I2S].codec_of_node) {
 		dev_err(&pdev->dev,
 			"Property 'audio-codec' missing or invalid\n");
-		return -EINVAL;
+		ret = -EINVAL;
+		goto put_platform_node;
 	}
 	card->dev = &pdev->dev;
 
@@ -302,6 +304,7 @@ static int mt8173_rt5650_dev_probe(struct platform_device *pdev)
 		dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",
 			__func__, ret);
 
+put_platform_node:
 	of_node_put(platform_node);
 	return ret;
 }
diff --git linux-libre-4.19.255-gnu1/sound/soc/qcom/qdsp6/q6adm.c linux-libre-4.19.256-gnu1/sound/soc/qcom/qdsp6/q6adm.c
index 932c3ebfd252..01f9127daf5c 100644
--- linux-libre-4.19.255-gnu1/sound/soc/qcom/qdsp6/q6adm.c
+++ linux-libre-4.19.256-gnu1/sound/soc/qcom/qdsp6/q6adm.c
@@ -218,7 +218,7 @@ static struct q6copp *q6adm_alloc_copp(struct q6adm *adm, int port_idx)
 	idx = find_first_zero_bit(&adm->copp_bitmap[port_idx],
 				  MAX_COPPS_PER_PORT);
 
-	if (idx > MAX_COPPS_PER_PORT)
+	if (idx >= MAX_COPPS_PER_PORT)
 		return ERR_PTR(-EBUSY);
 
 	c = kzalloc(sizeof(*c), GFP_ATOMIC);
diff --git linux-libre-4.19.255-gnu1/sound/usb/bcd2000/bcd2000.c linux-libre-4.19.256-gnu1/sound/usb/bcd2000/bcd2000.c
index d6c8b29fe430..bdab5426aa17 100644
--- linux-libre-4.19.255-gnu1/sound/usb/bcd2000/bcd2000.c
+++ linux-libre-4.19.256-gnu1/sound/usb/bcd2000/bcd2000.c
@@ -357,7 +357,8 @@ static int bcd2000_init_midi(struct bcd2000 *bcd2k)
 static void bcd2000_free_usb_related_resources(struct bcd2000 *bcd2k,
 						struct usb_interface *interface)
 {
-	/* usb_kill_urb not necessary, urb is aborted automatically */
+	usb_kill_urb(bcd2k->midi_out_urb);
+	usb_kill_urb(bcd2k->midi_in_urb);
 
 	usb_free_urb(bcd2k->midi_out_urb);
 	usb_free_urb(bcd2k->midi_in_urb);
diff --git linux-libre-4.19.255-gnu1/tools/build/feature/test-libcrypto.c linux-libre-4.19.256-gnu1/tools/build/feature/test-libcrypto.c
index a98174e0569c..bc34a5bbb504 100644
--- linux-libre-4.19.255-gnu1/tools/build/feature/test-libcrypto.c
+++ linux-libre-4.19.256-gnu1/tools/build/feature/test-libcrypto.c
@@ -1,16 +1,23 @@
 // SPDX-License-Identifier: GPL-2.0
+#include <openssl/evp.h>
 #include <openssl/sha.h>
 #include <openssl/md5.h>
 
 int main(void)
 {
-	MD5_CTX context;
+	EVP_MD_CTX *mdctx;
 	unsigned char md[MD5_DIGEST_LENGTH + SHA_DIGEST_LENGTH];
 	unsigned char dat[] = "12345";
+	unsigned int digest_len;
 
-	MD5_Init(&context);
-	MD5_Update(&context, &dat[0], sizeof(dat));
-	MD5_Final(&md[0], &context);
+	mdctx = EVP_MD_CTX_new();
+	if (!mdctx)
+		return 0;
+
+	EVP_DigestInit_ex(mdctx, EVP_md5(), NULL);
+	EVP_DigestUpdate(mdctx, &dat[0], sizeof(dat));
+	EVP_DigestFinal_ex(mdctx, &md[0], &digest_len);
+	EVP_MD_CTX_free(mdctx);
 
 	SHA1(&dat[0], sizeof(dat), &md[0]);
 
diff --git linux-libre-4.19.255-gnu1/tools/lib/bpf/libbpf.c linux-libre-4.19.256-gnu1/tools/lib/bpf/libbpf.c
index 249fa8d7376e..76cf63705c86 100644
--- linux-libre-4.19.255-gnu1/tools/lib/bpf/libbpf.c
+++ linux-libre-4.19.256-gnu1/tools/lib/bpf/libbpf.c
@@ -1060,7 +1060,7 @@ static int bpf_map_find_btf_info(struct bpf_map *map, const struct btf *btf)
 int bpf_map__reuse_fd(struct bpf_map *map, int fd)
 {
 	struct bpf_map_info info = {};
-	__u32 len = sizeof(info);
+	__u32 len = sizeof(info), name_len;
 	int new_fd, err;
 	char *new_name;
 
@@ -1068,7 +1068,12 @@ int bpf_map__reuse_fd(struct bpf_map *map, int fd)
 	if (err)
 		return err;
 
-	new_name = strdup(info.name);
+	name_len = strlen(info.name);
+	if (name_len == BPF_OBJ_NAME_LEN - 1 && strncmp(map->name, info.name, name_len) == 0)
+		new_name = strdup(map->name);
+	else
+		new_name = strdup(info.name);
+
 	if (!new_name)
 		return -errno;
 
diff --git linux-libre-4.19.255-gnu1/tools/perf/util/genelf.c linux-libre-4.19.256-gnu1/tools/perf/util/genelf.c
index aafbe54fd3fa..afb8fe3a8e35 100644
--- linux-libre-4.19.255-gnu1/tools/perf/util/genelf.c
+++ linux-libre-4.19.256-gnu1/tools/perf/util/genelf.c
@@ -35,7 +35,11 @@
 
 #define BUILD_ID_URANDOM /* different uuid for each run */
 
-#ifdef HAVE_LIBCRYPTO
+// FIXME, remove this and fix the deprecation warnings before its removed and
+// We'll break for good here...
+#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
+
+#ifdef HAVE_LIBCRYPTO_SUPPORT
 
 #define BUILD_ID_MD5
 #undef BUILD_ID_SHA	/* does not seem to work well when linked with Java */
diff --git linux-libre-4.19.255-gnu1/tools/testing/selftests/timers/clocksource-switch.c linux-libre-4.19.256-gnu1/tools/testing/selftests/timers/clocksource-switch.c
index bfc974b4572d..c18313a5f357 100644
--- linux-libre-4.19.255-gnu1/tools/testing/selftests/timers/clocksource-switch.c
+++ linux-libre-4.19.256-gnu1/tools/testing/selftests/timers/clocksource-switch.c
@@ -110,10 +110,10 @@ int run_tests(int secs)
 
 	sprintf(buf, "./inconsistency-check -t %i", secs);
 	ret = system(buf);
-	if (ret)
-		return ret;
+	if (WIFEXITED(ret) && WEXITSTATUS(ret))
+		return WEXITSTATUS(ret);
 	ret = system("./nanosleep");
-	return ret;
+	return WIFEXITED(ret) ? WEXITSTATUS(ret) : 0;
 }
 
 
diff --git linux-libre-4.19.255-gnu1/tools/testing/selftests/timers/valid-adjtimex.c linux-libre-4.19.256-gnu1/tools/testing/selftests/timers/valid-adjtimex.c
index 5397de708d3c..48b9a803235a 100644
--- linux-libre-4.19.255-gnu1/tools/testing/selftests/timers/valid-adjtimex.c
+++ linux-libre-4.19.256-gnu1/tools/testing/selftests/timers/valid-adjtimex.c
@@ -40,7 +40,7 @@
 #define ADJ_SETOFFSET 0x0100
 
 #include <sys/syscall.h>
-static int clock_adjtime(clockid_t id, struct timex *tx)
+int clock_adjtime(clockid_t id, struct timex *tx)
 {
 	return syscall(__NR_clock_adjtime, id, tx);
 }
diff --git linux-libre-4.19.255-gnu1/tools/thermal/tmon/sysfs.c linux-libre-4.19.256-gnu1/tools/thermal/tmon/sysfs.c
index 18f523557983..1b17cbc54c9d 100644
--- linux-libre-4.19.255-gnu1/tools/thermal/tmon/sysfs.c
+++ linux-libre-4.19.256-gnu1/tools/thermal/tmon/sysfs.c
@@ -22,6 +22,7 @@
 #include <stdint.h>
 #include <dirent.h>
 #include <libintl.h>
+#include <limits.h>
 #include <ctype.h>
 #include <time.h>
 #include <syslog.h>
@@ -42,9 +43,9 @@ int sysfs_set_ulong(char *path, char *filename, unsigned long val)
 {
 	FILE *fd;
 	int ret = -1;
-	char filepath[256];
+	char filepath[PATH_MAX + 2]; /* NUL and '/' */
 
-	snprintf(filepath, 256, "%s/%s", path, filename);
+	snprintf(filepath, sizeof(filepath), "%s/%s", path, filename);
 
 	fd = fopen(filepath, "w");
 	if (!fd) {
@@ -66,9 +67,9 @@ static int sysfs_get_ulong(char *path, char *filename, unsigned long *p_ulong)
 {
 	FILE *fd;
 	int ret = -1;
-	char filepath[256];
+	char filepath[PATH_MAX + 2]; /* NUL and '/' */
 
-	snprintf(filepath, 256, "%s/%s", path, filename);
+	snprintf(filepath, sizeof(filepath), "%s/%s", path, filename);
 
 	fd = fopen(filepath, "r");
 	if (!fd) {
@@ -85,9 +86,9 @@ static int sysfs_get_string(char *path, char *filename, char *str)
 {
 	FILE *fd;
 	int ret = -1;
-	char filepath[256];
+	char filepath[PATH_MAX + 2]; /* NUL and '/' */
 
-	snprintf(filepath, 256, "%s/%s", path, filename);
+	snprintf(filepath, sizeof(filepath), "%s/%s", path, filename);
 
 	fd = fopen(filepath, "r");
 	if (!fd) {
@@ -208,8 +209,8 @@ static int find_tzone_cdev(struct dirent *nl, char *tz_name,
 {
 	unsigned long trip_instance = 0;
 	char cdev_name_linked[256];
-	char cdev_name[256];
-	char cdev_trip_name[256];
+	char cdev_name[PATH_MAX];
+	char cdev_trip_name[PATH_MAX];
 	int cdev_id;
 
 	if (nl->d_type == DT_LNK) {
@@ -222,7 +223,8 @@ static int find_tzone_cdev(struct dirent *nl, char *tz_name,
 			return -EINVAL;
 		}
 		/* find the link to real cooling device record binding */
-		snprintf(cdev_name, 256, "%s/%s", tz_name, nl->d_name);
+		snprintf(cdev_name, sizeof(cdev_name) - 2, "%s/%s",
+			 tz_name, nl->d_name);
 		memset(cdev_name_linked, 0, sizeof(cdev_name_linked));
 		if (readlink(cdev_name, cdev_name_linked,
 				sizeof(cdev_name_linked) - 1) != -1) {
@@ -235,8 +237,8 @@ static int find_tzone_cdev(struct dirent *nl, char *tz_name,
 			/* find the trip point in which the cdev is binded to
 			 * in this tzone
 			 */
-			snprintf(cdev_trip_name, 256, "%s%s", nl->d_name,
-				"_trip_point");
+			snprintf(cdev_trip_name, sizeof(cdev_trip_name) - 1,
+				"%s%s", nl->d_name, "_trip_point");
 			sysfs_get_ulong(tz_name, cdev_trip_name,
 					&trip_instance);
 			/* validate trip point range, e.g. trip could return -1
diff --git linux-libre-4.19.255-gnu1/tools/thermal/tmon/tmon.h linux-libre-4.19.256-gnu1/tools/thermal/tmon/tmon.h
index 9e3c49c547ac..7b090a6c95b6 100644
--- linux-libre-4.19.255-gnu1/tools/thermal/tmon/tmon.h
+++ linux-libre-4.19.256-gnu1/tools/thermal/tmon/tmon.h
@@ -36,6 +36,9 @@
 #define NR_LINES_TZDATA 1
 #define TMON_LOG_FILE "/var/tmp/tmon.log"
 
+#include <sys/time.h>
+#include <pthread.h>
+
 extern unsigned long ticktime;
 extern double time_elapsed;
 extern unsigned long target_temp_user;
diff --git linux-libre-4.19.255-gnu1/virt/kvm/kvm_main.c linux-libre-4.19.256-gnu1/virt/kvm/kvm_main.c
index 3d45ce134227..6f9c0060a3e5 100644
--- linux-libre-4.19.255-gnu1/virt/kvm/kvm_main.c
+++ linux-libre-4.19.256-gnu1/virt/kvm/kvm_main.c
@@ -2820,7 +2820,7 @@ static long kvm_vcpu_ioctl(struct file *filp,
 	struct kvm_fpu *fpu = NULL;
 	struct kvm_sregs *kvm_sregs = NULL;
 
-	if (vcpu->kvm->mm != current->mm)
+	if (vcpu->kvm->mm != current->mm || vcpu->kvm->vm_bugged)
 		return -EIO;
 
 	if (unlikely(_IOC_TYPE(ioctl) != KVMIO))
@@ -3026,7 +3026,7 @@ static long kvm_vcpu_compat_ioctl(struct file *filp,
 	void __user *argp = compat_ptr(arg);
 	int r;
 
-	if (vcpu->kvm->mm != current->mm)
+	if (vcpu->kvm->mm != current->mm || vcpu->kvm->vm_bugged)
 		return -EIO;
 
 	switch (ioctl) {
@@ -3081,7 +3081,7 @@ static long kvm_device_ioctl(struct file *filp, unsigned int ioctl,
 {
 	struct kvm_device *dev = filp->private_data;
 
-	if (dev->kvm->mm != current->mm)
+	if (dev->kvm->mm != current->mm || dev->kvm->vm_bugged)
 		return -EIO;
 
 	switch (ioctl) {
@@ -3244,7 +3244,7 @@ static long kvm_vm_ioctl(struct file *filp,
 	void __user *argp = (void __user *)arg;
 	int r;
 
-	if (kvm->mm != current->mm)
+	if (kvm->mm != current->mm || kvm->vm_bugged)
 		return -EIO;
 	switch (ioctl) {
 	case KVM_CREATE_VCPU:
@@ -3422,7 +3422,7 @@ static long kvm_vm_compat_ioctl(struct file *filp,
 	struct kvm *kvm = filp->private_data;
 	int r;
 
-	if (kvm->mm != current->mm)
+	if (kvm->mm != current->mm || kvm->vm_bugged)
 		return -EIO;
 	switch (ioctl) {
 	case KVM_GET_DIRTY_LOG: {
