diff -druNp --no-dereference linux-libre-4.4.208-gnu/arch/arm/boot/dts/am437x-gp-evm.dts linux-libre-4.4.209-gnu/arch/arm/boot/dts/am437x-gp-evm.dts
--- linux-libre-4.4.208-gnu/arch/arm/boot/dts/am437x-gp-evm.dts	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/arch/arm/boot/dts/am437x-gp-evm.dts	2020-01-12 05:22:53.000000000 -0500
@@ -79,7 +79,7 @@
 		};
 
 	lcd0: display {
-		compatible = "osddisplays,osd057T0559-34ts", "panel-dpi";
+		compatible = "osddisplays,osd070t1718-19ts", "panel-dpi";
 		label = "lcd";
 
 		panel-timing {
diff -druNp --no-dereference linux-libre-4.4.208-gnu/arch/arm/boot/dts/am43x-epos-evm.dts linux-libre-4.4.209-gnu/arch/arm/boot/dts/am43x-epos-evm.dts
--- linux-libre-4.4.208-gnu/arch/arm/boot/dts/am43x-epos-evm.dts	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/arch/arm/boot/dts/am43x-epos-evm.dts	2020-01-12 05:22:53.000000000 -0500
@@ -41,7 +41,7 @@
 	};
 
 	lcd0: display {
-		compatible = "osddisplays,osd057T0559-34ts", "panel-dpi";
+		compatible = "osddisplays,osd070t1718-19ts", "panel-dpi";
 		label = "lcd";
 
 		panel-timing {
diff -druNp --no-dereference linux-libre-4.4.208-gnu/arch/arm/mach-vexpress/spc.c linux-libre-4.4.209-gnu/arch/arm/mach-vexpress/spc.c
--- linux-libre-4.4.208-gnu/arch/arm/mach-vexpress/spc.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/arch/arm/mach-vexpress/spc.c	2020-01-12 05:22:53.000000000 -0500
@@ -555,8 +555,9 @@ static struct clk *ve_spc_clk_register(s
 
 static int __init ve_spc_clk_init(void)
 {
-	int cpu;
+	int cpu, cluster;
 	struct clk *clk;
+	bool init_opp_table[MAX_CLUSTERS] = { false };
 
 	if (!info)
 		return 0; /* Continue only if SPC is initialised */
@@ -582,8 +583,17 @@ static int __init ve_spc_clk_init(void)
 			continue;
 		}
 
+		cluster = topology_physical_package_id(cpu_dev->id);
+		if (init_opp_table[cluster])
+			continue;
+
 		if (ve_init_opp_table(cpu_dev))
 			pr_warn("failed to initialise cpu%d opp table\n", cpu);
+		else if (dev_pm_opp_set_sharing_cpus(cpu_dev,
+			 topology_core_cpumask(cpu_dev->id)))
+			pr_warn("failed to mark OPPs shared for cpu%d\n", cpu);
+		else
+			init_opp_table[cluster] = true;
 	}
 
 	platform_device_register_simple("vexpress-spc-cpufreq", -1, NULL, 0);
diff -druNp --no-dereference linux-libre-4.4.208-gnu/arch/mips/include/asm/thread_info.h linux-libre-4.4.209-gnu/arch/mips/include/asm/thread_info.h
--- linux-libre-4.4.208-gnu/arch/mips/include/asm/thread_info.h	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/arch/mips/include/asm/thread_info.h	2020-01-12 05:22:53.000000000 -0500
@@ -52,8 +52,26 @@ struct thread_info {
 #define init_thread_info	(init_thread_union.thread_info)
 #define init_stack		(init_thread_union.stack)
 
-/* How to get the thread information struct from C.  */
+/*
+ * A pointer to the struct thread_info for the currently executing thread is
+ * held in register $28/$gp.
+ *
+ * We declare __current_thread_info as a global register variable rather than a
+ * local register variable within current_thread_info() because clang doesn't
+ * support explicit local register variables.
+ *
+ * When building the VDSO we take care not to declare the global register
+ * variable because this causes GCC to not preserve the value of $28/$gp in
+ * functions that change its value (which is common in the PIC VDSO when
+ * accessing the GOT). Since the VDSO shouldn't be accessing
+ * __current_thread_info anyway we declare it extern in order to cause a link
+ * failure if it's referenced.
+ */
+#ifdef __VDSO__
+extern struct thread_info *__current_thread_info;
+#else
 register struct thread_info *__current_thread_info __asm__("$28");
+#endif
 
 static inline struct thread_info *current_thread_info(void)
 {
diff -druNp --no-dereference linux-libre-4.4.208-gnu/arch/parisc/include/asm/cmpxchg.h linux-libre-4.4.209-gnu/arch/parisc/include/asm/cmpxchg.h
--- linux-libre-4.4.208-gnu/arch/parisc/include/asm/cmpxchg.h	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/arch/parisc/include/asm/cmpxchg.h	2020-01-12 05:22:53.000000000 -0500
@@ -43,8 +43,14 @@ __xchg(unsigned long x, __volatile__ voi
 **		if (((unsigned long)p & 0xf) == 0)
 **			return __ldcw(p);
 */
-#define xchg(ptr, x) \
-	((__typeof__(*(ptr)))__xchg((unsigned long)(x), (ptr), sizeof(*(ptr))))
+#define xchg(ptr, x)							\
+({									\
+	__typeof__(*(ptr)) __ret;					\
+	__typeof__(*(ptr)) _x_ = (x);					\
+	__ret = (__typeof__(*(ptr)))					\
+		__xchg((unsigned long)_x_, (ptr), sizeof(*(ptr)));	\
+	__ret;								\
+})
 
 /* bug catcher for when unsupported size is used - won't link */
 extern void __cmpxchg_called_with_bad_pointer(void);
diff -druNp --no-dereference linux-libre-4.4.208-gnu/arch/powerpc/mm/mem.c linux-libre-4.4.209-gnu/arch/powerpc/mm/mem.c
--- linux-libre-4.4.208-gnu/arch/powerpc/mm/mem.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/arch/powerpc/mm/mem.c	2020-01-12 05:22:53.000000000 -0500
@@ -330,6 +330,14 @@ void __init mem_init(void)
 	BUILD_BUG_ON(MMU_PAGE_COUNT > 16);
 
 #ifdef CONFIG_SWIOTLB
+	/*
+	 * Some platforms (e.g. 85xx) limit DMA-able memory way below
+	 * 4G. We force memblock to bottom-up mode to ensure that the
+	 * memory allocated in swiotlb_init() is DMA-able.
+	 * As it's the last memblock allocation, no need to reset it
+	 * back to to-down.
+	 */
+	memblock_set_bottom_up(true);
 	swiotlb_init(0);
 #endif
 
diff -druNp --no-dereference linux-libre-4.4.208-gnu/arch/powerpc/platforms/pseries/hvconsole.c linux-libre-4.4.209-gnu/arch/powerpc/platforms/pseries/hvconsole.c
--- linux-libre-4.4.208-gnu/arch/powerpc/platforms/pseries/hvconsole.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/arch/powerpc/platforms/pseries/hvconsole.c	2020-01-12 05:22:53.000000000 -0500
@@ -62,7 +62,7 @@ EXPORT_SYMBOL(hvc_get_chars);
  * @vtermno: The vtermno or unit_address of the adapter from which the data
  *	originated.
  * @buf: The character buffer that contains the character data to send to
- *	firmware.
+ *	firmware. Must be at least 16 bytes, even if count is less than 16.
  * @count: Send this number of characters.
  */
 int hvc_put_chars(uint32_t vtermno, const char *buf, int count)
diff -druNp --no-dereference linux-libre-4.4.208-gnu/arch/s390/kernel/perf_cpum_sf.c linux-libre-4.4.209-gnu/arch/s390/kernel/perf_cpum_sf.c
--- linux-libre-4.4.208-gnu/arch/s390/kernel/perf_cpum_sf.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/arch/s390/kernel/perf_cpum_sf.c	2020-01-12 05:22:53.000000000 -0500
@@ -1294,18 +1294,28 @@ static void hw_perf_event_update(struct
 		 */
 		if (flush_all && done)
 			break;
-
-		/* If an event overflow happened, discard samples by
-		 * processing any remaining sample-data-blocks.
-		 */
-		if (event_overflow)
-			flush_all = 1;
 	}
 
 	/* Account sample overflows in the event hardware structure */
 	if (sampl_overflow)
 		OVERFLOW_REG(hwc) = DIV_ROUND_UP(OVERFLOW_REG(hwc) +
 						 sampl_overflow, 1 + num_sdb);
+
+	/* Perf_event_overflow() and perf_event_account_interrupt() limit
+	 * the interrupt rate to an upper limit. Roughly 1000 samples per
+	 * task tick.
+	 * Hitting this limit results in a large number
+	 * of throttled REF_REPORT_THROTTLE entries and the samples
+	 * are dropped.
+	 * Slightly increase the interval to avoid hitting this limit.
+	 */
+	if (event_overflow) {
+		SAMPL_RATE(hwc) += DIV_ROUND_UP(SAMPL_RATE(hwc), 10);
+		debug_sprintf_event(sfdbg, 1, "%s: rate adjustment %ld\n",
+				    __func__,
+				    DIV_ROUND_UP(SAMPL_RATE(hwc), 10));
+	}
+
 	if (sampl_overflow || event_overflow)
 		debug_sprintf_event(sfdbg, 4, "hw_perf_event_update: "
 				    "overflow stats: sample=%llu event=%llu\n",
diff -druNp --no-dereference linux-libre-4.4.208-gnu/arch/s390/kernel/smp.c linux-libre-4.4.209-gnu/arch/s390/kernel/smp.c
--- linux-libre-4.4.208-gnu/arch/s390/kernel/smp.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/arch/s390/kernel/smp.c	2020-01-12 05:22:53.000000000 -0500
@@ -702,39 +702,67 @@ static struct sclp_core_info *smp_get_co
 
 static int smp_add_present_cpu(int cpu);
 
-static int __smp_rescan_cpus(struct sclp_core_info *info, int sysfs_add)
+static int smp_add_core(struct sclp_core_entry *core, cpumask_t *avail,
+			bool configured, bool early)
 {
 	struct pcpu *pcpu;
-	cpumask_t avail;
-	int cpu, nr, i, j;
+	int cpu, nr, i;
 	u16 address;
 
 	nr = 0;
-	cpumask_xor(&avail, cpu_possible_mask, cpu_present_mask);
-	cpu = cpumask_first(&avail);
-	for (i = 0; (i < info->combined) && (cpu < nr_cpu_ids); i++) {
-		if (sclp.has_core_type && info->core[i].type != boot_core_type)
+	if (sclp.has_core_type && core->type != boot_core_type)
+		return nr;
+	cpu = cpumask_first(avail);
+	address = core->core_id << smp_cpu_mt_shift;
+	for (i = 0; (i <= smp_cpu_mtid) && (cpu < nr_cpu_ids); i++) {
+		if (pcpu_find_address(cpu_present_mask, address + i))
 			continue;
-		address = info->core[i].core_id << smp_cpu_mt_shift;
-		for (j = 0; j <= smp_cpu_mtid; j++) {
-			if (pcpu_find_address(cpu_present_mask, address + j))
-				continue;
-			pcpu = pcpu_devices + cpu;
-			pcpu->address = address + j;
-			pcpu->state =
-				(cpu >= info->configured*(smp_cpu_mtid + 1)) ?
-				CPU_STATE_STANDBY : CPU_STATE_CONFIGURED;
-			smp_cpu_set_polarization(cpu, POLARIZATION_UNKNOWN);
-			set_cpu_present(cpu, true);
-			if (sysfs_add && smp_add_present_cpu(cpu) != 0)
-				set_cpu_present(cpu, false);
-			else
-				nr++;
-			cpu = cpumask_next(cpu, &avail);
-			if (cpu >= nr_cpu_ids)
+		pcpu = pcpu_devices + cpu;
+		pcpu->address = address + i;
+		if (configured)
+			pcpu->state = CPU_STATE_CONFIGURED;
+		else
+			pcpu->state = CPU_STATE_STANDBY;
+		smp_cpu_set_polarization(cpu, POLARIZATION_UNKNOWN);
+		set_cpu_present(cpu, true);
+		if (!early && smp_add_present_cpu(cpu) != 0)
+			set_cpu_present(cpu, false);
+		else
+			nr++;
+		cpumask_clear_cpu(cpu, avail);
+		cpu = cpumask_next(cpu, avail);
+	}
+	return nr;
+}
+
+static int __smp_rescan_cpus(struct sclp_core_info *info, bool early)
+{
+	struct sclp_core_entry *core;
+	cpumask_t avail;
+	bool configured;
+	u16 core_id;
+	int nr, i;
+
+	nr = 0;
+	cpumask_xor(&avail, cpu_possible_mask, cpu_present_mask);
+	/*
+	 * Add IPL core first (which got logical CPU number 0) to make sure
+	 * that all SMT threads get subsequent logical CPU numbers.
+	 */
+	if (early) {
+		core_id = pcpu_devices[0].address >> smp_cpu_mt_shift;
+		for (i = 0; i < info->configured; i++) {
+			core = &info->core[i];
+			if (core->core_id == core_id) {
+				nr += smp_add_core(core, &avail, true, early);
 				break;
+			}
 		}
 	}
+	for (i = 0; i < info->combined; i++) {
+		configured = i < info->configured;
+		nr += smp_add_core(&info->core[i], &avail, configured, early);
+	}
 	return nr;
 }
 
@@ -782,7 +810,7 @@ static void __init smp_detect_cpus(void)
 
 	/* Add CPUs present at boot */
 	get_online_cpus();
-	__smp_rescan_cpus(info, 0);
+	__smp_rescan_cpus(info, true);
 	put_online_cpus();
 	kfree(info);
 }
@@ -1140,7 +1168,7 @@ int __ref smp_rescan_cpus(void)
 		return -ENOMEM;
 	get_online_cpus();
 	mutex_lock(&smp_cpu_state_mutex);
-	nr = __smp_rescan_cpus(info, 1);
+	nr = __smp_rescan_cpus(info, false);
 	mutex_unlock(&smp_cpu_state_mutex);
 	put_online_cpus();
 	kfree(info);
diff -druNp --no-dereference linux-libre-4.4.208-gnu/arch/tile/lib/atomic_asm_32.S linux-libre-4.4.209-gnu/arch/tile/lib/atomic_asm_32.S
--- linux-libre-4.4.208-gnu/arch/tile/lib/atomic_asm_32.S	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/arch/tile/lib/atomic_asm_32.S	2020-01-12 05:22:53.000000000 -0500
@@ -24,8 +24,7 @@
  * has an opportunity to return -EFAULT to the user if needed.
  * The 64-bit routines just return a "long long" with the value,
  * since they are only used from kernel space and don't expect to fault.
- * Support for 16-bit ops is included in the framework but we don't provide
- * any (x86_64 has an atomic_inc_short(), so we might want to some day).
+ * Support for 16-bit ops is included in the framework but we don't provide any.
  *
  * Note that the caller is advised to issue a suitable L1 or L2
  * prefetch on the address being manipulated to avoid extra stalls.
diff -druNp --no-dereference linux-libre-4.4.208-gnu/arch/x86/include/asm/atomic.h linux-libre-4.4.209-gnu/arch/x86/include/asm/atomic.h
--- linux-libre-4.4.208-gnu/arch/x86/include/asm/atomic.h	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/arch/x86/include/asm/atomic.h	2020-01-12 05:22:53.000000000 -0500
@@ -220,19 +220,6 @@ static __always_inline int __atomic_add_
 	return c;
 }
 
-/**
- * atomic_inc_short - increment of a short integer
- * @v: pointer to type int
- *
- * Atomically adds 1 to @v
- * Returns the new value of @u
- */
-static __always_inline short int atomic_inc_short(short int *v)
-{
-	asm(LOCK_PREFIX "addw $1, %0" : "+m" (*v));
-	return *v;
-}
-
 #ifdef CONFIG_X86_32
 # include <asm/atomic64_32.h>
 #else
diff -druNp --no-dereference linux-libre-4.4.208-gnu/block/compat_ioctl.c linux-libre-4.4.209-gnu/block/compat_ioctl.c
--- linux-libre-4.4.208-gnu/block/compat_ioctl.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/block/compat_ioctl.c	2020-01-12 05:22:53.000000000 -0500
@@ -5,6 +5,7 @@
 #include <linux/compat.h>
 #include <linux/elevator.h>
 #include <linux/hdreg.h>
+#include <linux/pr.h>
 #include <linux/slab.h>
 #include <linux/syscalls.h>
 #include <linux/types.h>
@@ -406,6 +407,14 @@ long compat_blkdev_ioctl(struct file *fi
 	case BLKTRACETEARDOWN: /* compatible */
 		ret = blk_trace_ioctl(bdev, cmd, compat_ptr(arg));
 		return ret;
+	case IOC_PR_REGISTER:
+	case IOC_PR_RESERVE:
+	case IOC_PR_RELEASE:
+	case IOC_PR_PREEMPT:
+	case IOC_PR_PREEMPT_ABORT:
+	case IOC_PR_CLEAR:
+		return blkdev_ioctl(bdev, mode, cmd,
+				(unsigned long)compat_ptr(arg));
 	default:
 		if (disk->fops->compat_ioctl)
 			ret = disk->fops->compat_ioctl(bdev, mode, cmd, arg);
diff -druNp --no-dereference linux-libre-4.4.208-gnu/drivers/bluetooth/btusb.c linux-libre-4.4.209-gnu/drivers/bluetooth/btusb.c
--- linux-libre-4.4.208-gnu/drivers/bluetooth/btusb.c	2020-01-04 12:48:20.000000000 -0500
+++ linux-libre-4.4.209-gnu/drivers/bluetooth/btusb.c	2020-01-12 13:20:06.000000000 -0500
@@ -1056,7 +1056,7 @@ static int btusb_open(struct hci_dev *hd
 	if (data->setup_on_usb) {
 		err = data->setup_on_usb(hdev);
 		if (err < 0)
-			return err;
+			goto setup_fail;
 	}
 
 	err = usb_autopm_get_interface(data->intf);
@@ -1092,6 +1092,7 @@ done:
 
 failed:
 	clear_bit(BTUSB_INTR_RUNNING, &data->flags);
+setup_fail:
 	usb_autopm_put_interface(data->intf);
 	return err;
 }
diff -druNp --no-dereference linux-libre-4.4.208-gnu/drivers/devfreq/devfreq.c linux-libre-4.4.209-gnu/drivers/devfreq/devfreq.c
--- linux-libre-4.4.208-gnu/drivers/devfreq/devfreq.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/drivers/devfreq/devfreq.c	2020-01-12 05:22:53.000000000 -0500
@@ -396,11 +396,6 @@ static int devfreq_notifier_call(struct
 static void _remove_devfreq(struct devfreq *devfreq)
 {
 	mutex_lock(&devfreq_list_lock);
-	if (IS_ERR(find_device_devfreq(devfreq->dev.parent))) {
-		mutex_unlock(&devfreq_list_lock);
-		dev_warn(&devfreq->dev, "releasing devfreq which doesn't exist\n");
-		return;
-	}
 	list_del(&devfreq->node);
 	mutex_unlock(&devfreq_list_lock);
 
@@ -472,6 +467,7 @@ struct devfreq *devfreq_add_device(struc
 	devfreq->dev.parent = dev;
 	devfreq->dev.class = devfreq_class;
 	devfreq->dev.release = devfreq_dev_release;
+	INIT_LIST_HEAD(&devfreq->node);
 	devfreq->profile = profile;
 	strncpy(devfreq->governor_name, governor_name, DEVFREQ_NAME_LEN);
 	devfreq->previous_freq = profile->initial_freq;
diff -druNp --no-dereference linux-libre-4.4.208-gnu/drivers/firewire/net.c linux-libre-4.4.209-gnu/drivers/firewire/net.c
--- linux-libre-4.4.208-gnu/drivers/firewire/net.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/drivers/firewire/net.c	2020-01-12 05:22:53.000000000 -0500
@@ -249,7 +249,11 @@ static int fwnet_header_cache(const stru
 	h = (struct fwnet_header *)((u8 *)hh->hh_data + HH_DATA_OFF(sizeof(*h)));
 	h->h_proto = type;
 	memcpy(h->h_dest, neigh->ha, net->addr_len);
-	hh->hh_len = FWNET_HLEN;
+
+	/* Pairs with the READ_ONCE() in neigh_resolve_output(),
+	 * neigh_hh_output() and neigh_update_hhs().
+	 */
+	smp_store_release(&hh->hh_len, FWNET_HLEN);
 
 	return 0;
 }
diff -druNp --no-dereference linux-libre-4.4.208-gnu/drivers/gpio/gpiolib.c linux-libre-4.4.209-gnu/drivers/gpio/gpiolib.c
--- linux-libre-4.4.208-gnu/drivers/gpio/gpiolib.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/drivers/gpio/gpiolib.c	2020-01-12 05:22:53.000000000 -0500
@@ -163,6 +163,14 @@ int gpiod_get_direction(struct gpio_desc
 	chip = gpiod_to_chip(desc);
 	offset = gpio_chip_hwgpio(desc);
 
+	/*
+	 * Open drain emulation using input mode may incorrectly report
+	 * input here, fix that up.
+	 */
+	if (test_bit(FLAG_OPEN_DRAIN, &desc->flags) &&
+	    test_bit(FLAG_IS_OUT, &desc->flags))
+		return 0;
+
 	if (!chip->get_direction)
 		return status;
 
diff -druNp --no-dereference linux-libre-4.4.208-gnu/drivers/gpu/drm/drm_dp_mst_topology.c linux-libre-4.4.209-gnu/drivers/gpu/drm/drm_dp_mst_topology.c
--- linux-libre-4.4.208-gnu/drivers/gpu/drm/drm_dp_mst_topology.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/drivers/gpu/drm/drm_dp_mst_topology.c	2020-01-12 05:22:53.000000000 -0500
@@ -1538,7 +1538,11 @@ static void process_single_up_tx_qlock(s
 	if (ret != 1)
 		DRM_DEBUG_KMS("failed to send msg in q %d\n", ret);
 
-	txmsg->dst->tx_slots[txmsg->seqno] = NULL;
+	if (txmsg->seqno != -1) {
+		WARN_ON((unsigned int)txmsg->seqno >
+			ARRAY_SIZE(txmsg->dst->tx_slots));
+		txmsg->dst->tx_slots[txmsg->seqno] = NULL;
+	}
 }
 
 static void drm_dp_queue_down_tx(struct drm_dp_mst_topology_mgr *mgr,
diff -druNp --no-dereference linux-libre-4.4.208-gnu/drivers/infiniband/core/cma.c linux-libre-4.4.209-gnu/drivers/infiniband/core/cma.c
--- linux-libre-4.4.208-gnu/drivers/infiniband/core/cma.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/drivers/infiniband/core/cma.c	2020-01-12 05:22:53.000000000 -0500
@@ -4109,6 +4109,7 @@ err:
 	unregister_netdevice_notifier(&cma_nb);
 	rdma_addr_unregister_client(&addr_client);
 	ib_sa_unregister_client(&sa_client);
+	unregister_pernet_subsys(&cma_pernet_operations);
 err_wq:
 	destroy_workqueue(cma_wq);
 	return ret;
diff -druNp --no-dereference linux-libre-4.4.208-gnu/drivers/md/raid1.c linux-libre-4.4.209-gnu/drivers/md/raid1.c
--- linux-libre-4.4.208-gnu/drivers/md/raid1.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/drivers/md/raid1.c	2020-01-12 05:22:53.000000000 -0500
@@ -2630,7 +2630,7 @@ static sector_t sync_request(struct mdde
 				write_targets++;
 			}
 		}
-		if (bio->bi_end_io) {
+		if (rdev && bio->bi_end_io) {
 			atomic_inc(&rdev->nr_pending);
 			bio->bi_iter.bi_sector = sector_nr + rdev->data_offset;
 			bio->bi_bdev = rdev->bdev;
diff -druNp --no-dereference linux-libre-4.4.208-gnu/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h linux-libre-4.4.209-gnu/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h
--- linux-libre-4.4.208-gnu/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h	2020-01-12 05:22:53.000000000 -0500
@@ -1107,7 +1107,7 @@ static inline u8 bnx2x_get_path_func_num
 		for (i = 0; i < E1H_FUNC_MAX / 2; i++) {
 			u32 func_config =
 				MF_CFG_RD(bp,
-					  func_mf_config[BP_PORT(bp) + 2 * i].
+					  func_mf_config[BP_PATH(bp) + 2 * i].
 					  config);
 			func_num +=
 				((func_config & FUNC_MF_CFG_FUNC_HIDE) ? 0 : 1);
diff -druNp --no-dereference linux-libre-4.4.208-gnu/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c linux-libre-4.4.209-gnu/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
--- linux-libre-4.4.208-gnu/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c	2020-01-04 12:40:45.000000000 -0500
+++ linux-libre-4.4.209-gnu/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c	2020-01-12 13:11:55.000000000 -0500
@@ -9936,10 +9936,18 @@ static void bnx2x_recovery_failed(struct
  */
 static void bnx2x_parity_recover(struct bnx2x *bp)
 {
-	bool global = false;
 	u32 error_recovered, error_unrecovered;
-	bool is_parity;
+	bool is_parity, global = false;
+#ifdef CONFIG_BNX2X_SRIOV
+	int vf_idx;
+
+	for (vf_idx = 0; vf_idx < bp->requested_nr_virtfn; vf_idx++) {
+		struct bnx2x_virtf *vf = BP_VF(bp, vf_idx);
 
+		if (vf)
+			vf->state = VF_LOST;
+	}
+#endif
 	DP(NETIF_MSG_HW, "Handling parity\n");
 	while (1) {
 		switch (bp->recovery_state) {
diff -druNp --no-dereference linux-libre-4.4.208-gnu/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.h linux-libre-4.4.209-gnu/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.h
--- linux-libre-4.4.208-gnu/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.h	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.h	2020-01-12 05:22:53.000000000 -0500
@@ -139,6 +139,7 @@ struct bnx2x_virtf {
 #define VF_ACQUIRED	1	/* VF acquired, but not initialized */
 #define VF_ENABLED	2	/* VF Enabled */
 #define VF_RESET	3	/* VF FLR'd, pending cleanup */
+#define VF_LOST		4	/* Recovery while VFs are loaded */
 
 	bool flr_clnup_stage;	/* true during flr cleanup */
 
diff -druNp --no-dereference linux-libre-4.4.208-gnu/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.c linux-libre-4.4.209-gnu/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.c
--- linux-libre-4.4.208-gnu/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.c	2020-01-12 05:22:53.000000000 -0500
@@ -2095,6 +2095,18 @@ static void bnx2x_vf_mbx_request(struct
 {
 	int i;
 
+	if (vf->state == VF_LOST) {
+		/* Just ack the FW and return if VFs are lost
+		 * in case of parity error. VFs are supposed to be timedout
+		 * on waiting for PF response.
+		 */
+		DP(BNX2X_MSG_IOV,
+		   "VF 0x%x lost, not handling the request\n", vf->abs_vfid);
+
+		storm_memset_vf_mbx_ack(bp, vf->abs_vfid);
+		return;
+	}
+
 	/* check if tlv type is known */
 	if (bnx2x_tlv_supported(mbx->first_tlv.tl.type)) {
 		/* Lock the per vf op mutex and note the locker's identity.
diff -druNp --no-dereference linux-libre-4.4.208-gnu/drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c linux-libre-4.4.209-gnu/drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c
--- linux-libre-4.4.208-gnu/drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c	2020-01-12 05:22:53.000000000 -0500
@@ -53,7 +53,7 @@ static int sun7i_gmac_init(struct platfo
 	 * rate, which then uses the auto-reparenting feature of the
 	 * clock driver, and enabling/disabling the clock.
 	 */
-	if (gmac->interface == PHY_INTERFACE_MODE_RGMII) {
+	if (phy_interface_mode_is_rgmii(gmac->interface)) {
 		clk_set_rate(gmac->tx_clk, SUN7I_GMAC_GMII_RGMII_RATE);
 		clk_prepare_enable(gmac->tx_clk);
 		gmac->clk_enabled = 1;
diff -druNp --no-dereference linux-libre-4.4.208-gnu/drivers/net/macvlan.c linux-libre-4.4.209-gnu/drivers/net/macvlan.c
--- linux-libre-4.4.208-gnu/drivers/net/macvlan.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/drivers/net/macvlan.c	2020-01-12 05:22:53.000000000 -0500
@@ -233,7 +233,7 @@ static void macvlan_broadcast(struct sk_
 			      struct net_device *src,
 			      enum macvlan_mode mode)
 {
-	const struct ethhdr *eth = eth_hdr(skb);
+	const struct ethhdr *eth = skb_eth_hdr(skb);
 	const struct macvlan_dev *vlan;
 	struct sk_buff *nskb;
 	unsigned int i;
diff -druNp --no-dereference linux-libre-4.4.208-gnu/drivers/net/usb/lan78xx.c linux-libre-4.4.209-gnu/drivers/net/usb/lan78xx.c
--- linux-libre-4.4.208-gnu/drivers/net/usb/lan78xx.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/drivers/net/usb/lan78xx.c	2020-01-12 05:22:53.000000000 -0500
@@ -370,7 +370,7 @@ static int lan78xx_read_stats(struct lan
 		}
 	} else {
 		netdev_warn(dev->net,
-			    "Failed to read stat ret = 0x%x", ret);
+			    "Failed to read stat ret = %d", ret);
 	}
 
 	kfree(stats);
@@ -2036,11 +2036,6 @@ int lan78xx_stop(struct net_device *net)
 	return 0;
 }
 
-static int lan78xx_linearize(struct sk_buff *skb)
-{
-	return skb_linearize(skb);
-}
-
 static struct sk_buff *lan78xx_tx_prep(struct lan78xx_net *dev,
 				       struct sk_buff *skb, gfp_t flags)
 {
@@ -2051,8 +2046,10 @@ static struct sk_buff *lan78xx_tx_prep(s
 		return NULL;
 	}
 
-	if (lan78xx_linearize(skb) < 0)
+	if (skb_linearize(skb)) {
+		dev_kfree_skb_any(skb);
 		return NULL;
+	}
 
 	tx_cmd_a = (u32)(skb->len & TX_CMD_A_LEN_MASK_) | TX_CMD_A_FCS_;
 
diff -druNp --no-dereference linux-libre-4.4.208-gnu/drivers/net/vxlan.c linux-libre-4.4.209-gnu/drivers/net/vxlan.c
--- linux-libre-4.4.208-gnu/drivers/net/vxlan.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/drivers/net/vxlan.c	2020-01-12 05:22:53.000000000 -0500
@@ -2068,7 +2068,7 @@ static void vxlan_xmit_one(struct sk_buf
 			return;
 		}
 
-		tos = ip_tunnel_ecn_encap(tos, old_iph, skb);
+		tos = ip_tunnel_ecn_encap(RT_TOS(tos), old_iph, skb);
 		ttl = ttl ? : ip4_dst_hoplimit(&rt->dst);
 		err = vxlan_xmit_skb(rt, sk, skb, fl4.saddr,
 				     dst->sin.sin_addr.s_addr, tos, ttl, df,
diff -druNp --no-dereference linux-libre-4.4.208-gnu/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c linux-libre-4.4.209-gnu/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c
--- linux-libre-4.4.208-gnu/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c	2020-01-12 05:22:53.000000000 -0500
@@ -972,6 +972,8 @@ static bool ath9k_rx_prepare(struct ath9
 	struct ath_htc_rx_status *rxstatus;
 	struct ath_rx_status rx_stats;
 	bool decrypt_error = false;
+	__be16 rs_datalen;
+	bool is_phyerr;
 
 	if (skb->len < HTC_RX_FRAME_HEADER_SIZE) {
 		ath_err(common, "Corrupted RX frame, dropping (len: %d)\n",
@@ -981,11 +983,24 @@ static bool ath9k_rx_prepare(struct ath9
 
 	rxstatus = (struct ath_htc_rx_status *)skb->data;
 
-	if (be16_to_cpu(rxstatus->rs_datalen) -
-	    (skb->len - HTC_RX_FRAME_HEADER_SIZE) != 0) {
+	rs_datalen = be16_to_cpu(rxstatus->rs_datalen);
+	if (unlikely(rs_datalen -
+	    (skb->len - HTC_RX_FRAME_HEADER_SIZE) != 0)) {
 		ath_err(common,
 			"Corrupted RX data len, dropping (dlen: %d, skblen: %d)\n",
-			rxstatus->rs_datalen, skb->len);
+			rs_datalen, skb->len);
+		goto rx_next;
+	}
+
+	is_phyerr = rxstatus->rs_status & ATH9K_RXERR_PHY;
+	/*
+	 * Discard zero-length packets and packets smaller than an ACK
+	 * which are not PHY_ERROR (short radar pulses have a length of 3)
+	 */
+	if (unlikely(!rs_datalen || (rs_datalen < 10 && !is_phyerr))) {
+		ath_warn(common,
+			 "Short RX data len, dropping (dlen: %d)\n",
+			 rs_datalen);
 		goto rx_next;
 	}
 
@@ -1010,7 +1025,7 @@ static bool ath9k_rx_prepare(struct ath9
 	 * Process PHY errors and return so that the packet
 	 * can be dropped.
 	 */
-	if (rx_stats.rs_status & ATH9K_RXERR_PHY) {
+	if (unlikely(is_phyerr)) {
 		/* TODO: Not using DFS processing now. */
 		if (ath_cmn_process_fft(&priv->spec_priv, hdr,
 				    &rx_stats, rx_status->mactime)) {
diff -druNp --no-dereference linux-libre-4.4.208-gnu/drivers/regulator/rn5t618-regulator.c linux-libre-4.4.209-gnu/drivers/regulator/rn5t618-regulator.c
--- linux-libre-4.4.208-gnu/drivers/regulator/rn5t618-regulator.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/drivers/regulator/rn5t618-regulator.c	2020-01-12 05:22:53.000000000 -0500
@@ -95,6 +95,7 @@ static struct platform_driver rn5t618_re
 
 module_platform_driver(rn5t618_regulator_driver);
 
+MODULE_ALIAS("platform:rn5t618-regulator");
 MODULE_AUTHOR("Beniamino Galvani <b.galvani@gmail.com>");
 MODULE_DESCRIPTION("RN5T618 regulator driver");
 MODULE_LICENSE("GPL v2");
diff -druNp --no-dereference linux-libre-4.4.208-gnu/drivers/scsi/libsas/sas_discover.c linux-libre-4.4.209-gnu/drivers/scsi/libsas/sas_discover.c
--- linux-libre-4.4.208-gnu/drivers/scsi/libsas/sas_discover.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/drivers/scsi/libsas/sas_discover.c	2020-01-12 05:22:53.000000000 -0500
@@ -97,12 +97,21 @@ static int sas_get_port_device(struct as
 		else
 			dev->dev_type = SAS_SATA_DEV;
 		dev->tproto = SAS_PROTOCOL_SATA;
-	} else {
+	} else if (port->oob_mode == SAS_OOB_MODE) {
 		struct sas_identify_frame *id =
 			(struct sas_identify_frame *) dev->frame_rcvd;
 		dev->dev_type = id->dev_type;
 		dev->iproto = id->initiator_bits;
 		dev->tproto = id->target_bits;
+	} else {
+		/* If the oob mode is OOB_NOT_CONNECTED, the port is
+		 * disconnected due to race with PHY down. We cannot
+		 * continue to discover this port
+		 */
+		sas_put_device(dev);
+		pr_warn("Port %016llx is disconnected when discovering\n",
+			SAS_ADDR(port->attached_sas_addr));
+		return -ENODEV;
 	}
 
 	sas_init_dev(dev);
diff -druNp --no-dereference linux-libre-4.4.208-gnu/drivers/scsi/lpfc/lpfc_bsg.c linux-libre-4.4.209-gnu/drivers/scsi/lpfc/lpfc_bsg.c
--- linux-libre-4.4.208-gnu/drivers/scsi/lpfc/lpfc_bsg.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/drivers/scsi/lpfc/lpfc_bsg.c	2020-01-12 05:22:53.000000000 -0500
@@ -4352,12 +4352,6 @@ lpfc_bsg_write_ebuf_set(struct lpfc_hba
 	phba->mbox_ext_buf_ctx.seqNum++;
 	nemb_tp = phba->mbox_ext_buf_ctx.nembType;
 
-	dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
-	if (!dd_data) {
-		rc = -ENOMEM;
-		goto job_error;
-	}
-
 	pbuf = (uint8_t *)dmabuf->virt;
 	size = job->request_payload.payload_len;
 	sg_copy_to_buffer(job->request_payload.sg_list,
@@ -4394,6 +4388,13 @@ lpfc_bsg_write_ebuf_set(struct lpfc_hba
 				"2968 SLI_CONFIG ext-buffer wr all %d "
 				"ebuffers received\n",
 				phba->mbox_ext_buf_ctx.numBuf);
+
+		dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
+		if (!dd_data) {
+			rc = -ENOMEM;
+			goto job_error;
+		}
+
 		/* mailbox command structure for base driver */
 		pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 		if (!pmboxq) {
@@ -4441,6 +4442,8 @@ lpfc_bsg_write_ebuf_set(struct lpfc_hba
 	return SLI_CONFIG_HANDLED;
 
 job_error:
+	if (pmboxq)
+		mempool_free(pmboxq, phba->mbox_mem_pool);
 	lpfc_bsg_dma_page_free(phba, dmabuf);
 	kfree(dd_data);
 
diff -druNp --no-dereference linux-libre-4.4.208-gnu/drivers/scsi/qla2xxx/qla_isr.c linux-libre-4.4.209-gnu/drivers/scsi/qla2xxx/qla_isr.c
--- linux-libre-4.4.208-gnu/drivers/scsi/qla2xxx/qla_isr.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/drivers/scsi/qla2xxx/qla_isr.c	2020-01-12 05:22:53.000000000 -0500
@@ -966,8 +966,6 @@ global_port_update:
 			ql_dbg(ql_dbg_async, vha, 0x5011,
 			    "Asynchronous PORT UPDATE ignored %04x/%04x/%04x.\n",
 			    mb[1], mb[2], mb[3]);
-
-			qlt_async_event(mb[0], vha, mb);
 			break;
 		}
 
@@ -988,8 +986,6 @@ global_port_update:
 		set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 		set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
 		set_bit(VP_CONFIG_OK, &vha->vp_flags);
-
-		qlt_async_event(mb[0], vha, mb);
 		break;
 
 	case MBA_RSCN_UPDATE:		/* State Change Registration */
diff -druNp --no-dereference linux-libre-4.4.208-gnu/drivers/scsi/qla4xxx/ql4_os.c linux-libre-4.4.209-gnu/drivers/scsi/qla4xxx/ql4_os.c
--- linux-libre-4.4.208-gnu/drivers/scsi/qla4xxx/ql4_os.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/drivers/scsi/qla4xxx/ql4_os.c	2020-01-12 05:22:53.000000000 -0500
@@ -4285,7 +4285,6 @@ static int qla4xxx_mem_alloc(struct scsi
 	return QLA_SUCCESS;
 
 mem_alloc_error_exit:
-	qla4xxx_mem_free(ha);
 	return QLA_ERROR;
 }
 
diff -druNp --no-dereference linux-libre-4.4.208-gnu/drivers/tty/hvc/hvc_vio.c linux-libre-4.4.209-gnu/drivers/tty/hvc/hvc_vio.c
--- linux-libre-4.4.208-gnu/drivers/tty/hvc/hvc_vio.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/drivers/tty/hvc/hvc_vio.c	2020-01-12 05:22:53.000000000 -0500
@@ -122,6 +122,14 @@ static int hvterm_raw_get_chars(uint32_t
 	return got;
 }
 
+/**
+ * hvterm_raw_put_chars: send characters to firmware for given vterm adapter
+ * @vtermno: The virtual terminal number.
+ * @buf: The characters to send. Because of the underlying hypercall in
+ *       hvc_put_chars(), this buffer must be at least 16 bytes long, even if
+ *       you are sending fewer chars.
+ * @count: number of chars to send.
+ */
 static int hvterm_raw_put_chars(uint32_t vtermno, const char *buf, int count)
 {
 	struct hvterm_priv *pv = hvterm_privs[vtermno];
@@ -234,6 +242,7 @@ static const struct hv_ops hvterm_hvsi_o
 static void udbg_hvc_putc(char c)
 {
 	int count = -1;
+	unsigned char bounce_buffer[16];
 
 	if (!hvterm_privs[0])
 		return;
@@ -244,7 +253,12 @@ static void udbg_hvc_putc(char c)
 	do {
 		switch(hvterm_privs[0]->proto) {
 		case HV_PROTOCOL_RAW:
-			count = hvterm_raw_put_chars(0, &c, 1);
+			/*
+			 * hvterm_raw_put_chars requires at least a 16-byte
+			 * buffer, so go via the bounce buffer
+			 */
+			bounce_buffer[0] = c;
+			count = hvterm_raw_put_chars(0, bounce_buffer, 1);
 			break;
 		case HV_PROTOCOL_HVSI:
 			count = hvterm_hvsi_put_chars(0, &c, 1);
diff -druNp --no-dereference linux-libre-4.4.208-gnu/drivers/tty/serial/msm_serial.c linux-libre-4.4.209-gnu/drivers/tty/serial/msm_serial.c
--- linux-libre-4.4.208-gnu/drivers/tty/serial/msm_serial.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/drivers/tty/serial/msm_serial.c	2020-01-12 05:22:53.000000000 -0500
@@ -1381,6 +1381,7 @@ static void __msm_console_write(struct u
 	int num_newlines = 0;
 	bool replaced = false;
 	void __iomem *tf;
+	int locked = 1;
 
 	if (is_uartdm)
 		tf = port->membase + UARTDM_TF;
@@ -1393,7 +1394,13 @@ static void __msm_console_write(struct u
 			num_newlines++;
 	count += num_newlines;
 
-	spin_lock(&port->lock);
+	if (port->sysrq)
+		locked = 0;
+	else if (oops_in_progress)
+		locked = spin_trylock(&port->lock);
+	else
+		spin_lock(&port->lock);
+
 	if (is_uartdm)
 		msm_reset_dm_count(port, count);
 
@@ -1429,7 +1436,9 @@ static void __msm_console_write(struct u
 		iowrite32_rep(tf, buf, 1);
 		i += num_chars;
 	}
-	spin_unlock(&port->lock);
+
+	if (locked)
+		spin_unlock(&port->lock);
 }
 
 static void msm_console_write(struct console *co, const char *s,
diff -druNp --no-dereference linux-libre-4.4.208-gnu/drivers/usb/core/config.c linux-libre-4.4.209-gnu/drivers/usb/core/config.c
--- linux-libre-4.4.208-gnu/drivers/usb/core/config.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/drivers/usb/core/config.c	2020-01-12 05:22:53.000000000 -0500
@@ -169,9 +169,58 @@ static const unsigned short super_speed_
 	[USB_ENDPOINT_XFER_INT] = 1024,
 };
 
-static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum,
-    int asnum, struct usb_host_interface *ifp, int num_ep,
-    unsigned char *buffer, int size)
+static bool endpoint_is_duplicate(struct usb_endpoint_descriptor *e1,
+		struct usb_endpoint_descriptor *e2)
+{
+	if (e1->bEndpointAddress == e2->bEndpointAddress)
+		return true;
+
+	if (usb_endpoint_xfer_control(e1) || usb_endpoint_xfer_control(e2)) {
+		if (usb_endpoint_num(e1) == usb_endpoint_num(e2))
+			return true;
+	}
+
+	return false;
+}
+
+/*
+ * Check for duplicate endpoint addresses in other interfaces and in the
+ * altsetting currently being parsed.
+ */
+static bool config_endpoint_is_duplicate(struct usb_host_config *config,
+		int inum, int asnum, struct usb_endpoint_descriptor *d)
+{
+	struct usb_endpoint_descriptor *epd;
+	struct usb_interface_cache *intfc;
+	struct usb_host_interface *alt;
+	int i, j, k;
+
+	for (i = 0; i < config->desc.bNumInterfaces; ++i) {
+		intfc = config->intf_cache[i];
+
+		for (j = 0; j < intfc->num_altsetting; ++j) {
+			alt = &intfc->altsetting[j];
+
+			if (alt->desc.bInterfaceNumber == inum &&
+					alt->desc.bAlternateSetting != asnum)
+				continue;
+
+			for (k = 0; k < alt->desc.bNumEndpoints; ++k) {
+				epd = &alt->endpoint[k].desc;
+
+				if (endpoint_is_duplicate(epd, d))
+					return true;
+			}
+		}
+	}
+
+	return false;
+}
+
+static int usb_parse_endpoint(struct device *ddev, int cfgno,
+		struct usb_host_config *config, int inum, int asnum,
+		struct usb_host_interface *ifp, int num_ep,
+		unsigned char *buffer, int size)
 {
 	unsigned char *buffer0 = buffer;
 	struct usb_endpoint_descriptor *d;
@@ -208,13 +257,10 @@ static int usb_parse_endpoint(struct dev
 		goto skip_to_next_endpoint_or_interface_descriptor;
 
 	/* Check for duplicate endpoint addresses */
-	for (i = 0; i < ifp->desc.bNumEndpoints; ++i) {
-		if (ifp->endpoint[i].desc.bEndpointAddress ==
-		    d->bEndpointAddress) {
-			dev_warn(ddev, "config %d interface %d altsetting %d has a duplicate endpoint with address 0x%X, skipping\n",
-			    cfgno, inum, asnum, d->bEndpointAddress);
-			goto skip_to_next_endpoint_or_interface_descriptor;
-		}
+	if (config_endpoint_is_duplicate(config, inum, asnum, d)) {
+		dev_warn(ddev, "config %d interface %d altsetting %d has a duplicate endpoint with address 0x%X, skipping\n",
+				cfgno, inum, asnum, d->bEndpointAddress);
+		goto skip_to_next_endpoint_or_interface_descriptor;
 	}
 
 	endpoint = &ifp->endpoint[ifp->desc.bNumEndpoints];
@@ -488,8 +534,8 @@ static int usb_parse_interface(struct de
 		if (((struct usb_descriptor_header *) buffer)->bDescriptorType
 		     == USB_DT_INTERFACE)
 			break;
-		retval = usb_parse_endpoint(ddev, cfgno, inum, asnum, alt,
-		    num_ep, buffer, size);
+		retval = usb_parse_endpoint(ddev, cfgno, config, inum, asnum,
+				alt, num_ep, buffer, size);
 		if (retval < 0)
 			return retval;
 		++n;
diff -druNp --no-dereference linux-libre-4.4.208-gnu/drivers/usb/gadget/function/f_ecm.c linux-libre-4.4.209-gnu/drivers/usb/gadget/function/f_ecm.c
--- linux-libre-4.4.208-gnu/drivers/usb/gadget/function/f_ecm.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/drivers/usb/gadget/function/f_ecm.c	2020-01-12 05:22:53.000000000 -0500
@@ -625,8 +625,12 @@ static void ecm_disable(struct usb_funct
 
 	DBG(cdev, "ecm deactivated\n");
 
-	if (ecm->port.in_ep->enabled)
+	if (ecm->port.in_ep->enabled) {
 		gether_disconnect(&ecm->port);
+	} else {
+		ecm->port.in_ep->desc = NULL;
+		ecm->port.out_ep->desc = NULL;
+	}
 
 	usb_ep_disable(ecm->notify);
 	ecm->notify->desc = NULL;
diff -druNp --no-dereference linux-libre-4.4.208-gnu/drivers/usb/gadget/function/f_rndis.c linux-libre-4.4.209-gnu/drivers/usb/gadget/function/f_rndis.c
--- linux-libre-4.4.208-gnu/drivers/usb/gadget/function/f_rndis.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/drivers/usb/gadget/function/f_rndis.c	2020-01-12 05:22:53.000000000 -0500
@@ -619,6 +619,7 @@ static void rndis_disable(struct usb_fun
 	gether_disconnect(&rndis->port);
 
 	usb_ep_disable(rndis->notify);
+	rndis->notify->desc = NULL;
 }
 
 /*-------------------------------------------------------------------------*/
diff -druNp --no-dereference linux-libre-4.4.208-gnu/drivers/usb/serial/option.c linux-libre-4.4.209-gnu/drivers/usb/serial/option.c
--- linux-libre-4.4.208-gnu/drivers/usb/serial/option.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/drivers/usb/serial/option.c	2020-01-12 05:22:53.000000000 -0500
@@ -1167,6 +1167,8 @@ static const struct usb_device_id option
 	  .driver_info = NCTRL(0) | RSVD(3) },
 	{ USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1102, 0xff),	/* Telit ME910 (ECM) */
 	  .driver_info = NCTRL(0) },
+	{ USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x110a, 0xff),	/* Telit ME910G1 */
+	  .driver_info = NCTRL(0) | RSVD(3) },
 	{ USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE910),
 	  .driver_info = NCTRL(0) | RSVD(1) | RSVD(2) },
 	{ USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE910_USBCFG4),
diff -druNp --no-dereference linux-libre-4.4.208-gnu/drivers/xen/balloon.c linux-libre-4.4.209-gnu/drivers/xen/balloon.c
--- linux-libre-4.4.208-gnu/drivers/xen/balloon.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/drivers/xen/balloon.c	2020-01-12 05:22:53.000000000 -0500
@@ -392,7 +392,8 @@ static struct notifier_block xen_memory_
 #else
 static enum bp_state reserve_additional_memory(void)
 {
-	balloon_stats.target_pages = balloon_stats.current_pages;
+	balloon_stats.target_pages = balloon_stats.current_pages +
+				     balloon_stats.target_unpopulated;
 	return BP_ECANCELED;
 }
 #endif /* CONFIG_XEN_BALLOON_MEMORY_HOTPLUG */
diff -druNp --no-dereference linux-libre-4.4.208-gnu/fs/locks.c linux-libre-4.4.209-gnu/fs/locks.c
--- linux-libre-4.4.208-gnu/fs/locks.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/fs/locks.c	2020-01-12 05:22:53.000000000 -0500
@@ -2599,7 +2599,7 @@ static void lock_get_status(struct seq_f
 	}
 	if (inode) {
 		/* userspace relies on this representation of dev_t */
-		seq_printf(f, "%d %02x:%02x:%ld ", fl_pid,
+		seq_printf(f, "%d %02x:%02x:%lu ", fl_pid,
 				MAJOR(inode->i_sb->s_dev),
 				MINOR(inode->i_sb->s_dev), inode->i_ino);
 	} else {
diff -druNp --no-dereference linux-libre-4.4.208-gnu/fs/pstore/ram.c linux-libre-4.4.209-gnu/fs/pstore/ram.c
--- linux-libre-4.4.208-gnu/fs/pstore/ram.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/fs/pstore/ram.c	2020-01-12 05:22:53.000000000 -0500
@@ -319,6 +319,17 @@ static int notrace ramoops_pstore_write_
 
 	prz = cxt->przs[cxt->dump_write_cnt];
 
+	/*
+	 * Since this is a new crash dump, we need to reset the buffer in
+	 * case it still has an old dump present. Without this, the new dump
+	 * will get appended, which would seriously confuse anything trying
+	 * to check dump file contents. Specifically, ramoops_read_kmsg_hdr()
+	 * expects to find a dump header in the beginning of buffer data, so
+	 * we must to reset the buffer values, in order to ensure that the
+	 * header will be written to the beginning of the buffer.
+	 */
+	persistent_ram_zap(prz);
+
 	hlen = ramoops_write_kmsg_hdr(prz, compressed);
 	if (size + hlen > prz->buffer_size)
 		size = prz->buffer_size - hlen;
diff -druNp --no-dereference linux-libre-4.4.208-gnu/fs/xfs/xfs_log.c linux-libre-4.4.209-gnu/fs/xfs/xfs_log.c
--- linux-libre-4.4.208-gnu/fs/xfs/xfs_log.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/fs/xfs/xfs_log.c	2020-01-12 05:22:53.000000000 -0500
@@ -1503,6 +1503,8 @@ out_free_iclog:
 		if (iclog->ic_bp)
 			xfs_buf_free(iclog->ic_bp);
 		kmem_free(iclog);
+		if (prev_iclog == log->l_iclog)
+			break;
 	}
 	spinlock_destroy(&log->l_icloglock);
 	xfs_buf_free(log->l_xbuf);
diff -druNp --no-dereference linux-libre-4.4.208-gnu/include/linux/dmaengine.h linux-libre-4.4.209-gnu/include/linux/dmaengine.h
--- linux-libre-4.4.208-gnu/include/linux/dmaengine.h	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/include/linux/dmaengine.h	2020-01-12 05:22:53.000000000 -0500
@@ -1207,8 +1207,11 @@ static inline int dma_get_slave_caps(str
 static inline int dmaengine_desc_set_reuse(struct dma_async_tx_descriptor *tx)
 {
 	struct dma_slave_caps caps;
+	int ret;
 
-	dma_get_slave_caps(tx->chan, &caps);
+	ret = dma_get_slave_caps(tx->chan, &caps);
+	if (ret)
+		return ret;
 
 	if (caps.descriptor_reuse) {
 		tx->flags |= DMA_CTRL_REUSE;
diff -druNp --no-dereference linux-libre-4.4.208-gnu/include/linux/if_ether.h linux-libre-4.4.209-gnu/include/linux/if_ether.h
--- linux-libre-4.4.208-gnu/include/linux/if_ether.h	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/include/linux/if_ether.h	2020-01-12 05:22:53.000000000 -0500
@@ -28,6 +28,14 @@ static inline struct ethhdr *eth_hdr(con
 	return (struct ethhdr *)skb_mac_header(skb);
 }
 
+/* Prefer this version in TX path, instead of
+ * skb_reset_mac_header() + eth_hdr()
+ */
+static inline struct ethhdr *skb_eth_hdr(const struct sk_buff *skb)
+{
+	return (struct ethhdr *)skb->data;
+}
+
 int eth_header_parse(const struct sk_buff *skb, unsigned char *haddr);
 
 extern ssize_t sysfs_format_mac(char *buf, const unsigned char *addr, int len);
diff -druNp --no-dereference linux-libre-4.4.208-gnu/include/net/neighbour.h linux-libre-4.4.209-gnu/include/net/neighbour.h
--- linux-libre-4.4.208-gnu/include/net/neighbour.h	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/include/net/neighbour.h	2020-01-12 05:22:53.000000000 -0500
@@ -454,7 +454,7 @@ static inline int neigh_hh_output(const
 
 	do {
 		seq = read_seqbegin(&hh->hh_lock);
-		hh_len = hh->hh_len;
+		hh_len = READ_ONCE(hh->hh_len);
 		if (likely(hh_len <= HH_DATA_MOD)) {
 			hh_alen = HH_DATA_MOD;
 
diff -druNp --no-dereference linux-libre-4.4.208-gnu/include/uapi/linux/netfilter/xt_sctp.h linux-libre-4.4.209-gnu/include/uapi/linux/netfilter/xt_sctp.h
--- linux-libre-4.4.208-gnu/include/uapi/linux/netfilter/xt_sctp.h	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/include/uapi/linux/netfilter/xt_sctp.h	2020-01-12 05:22:53.000000000 -0500
@@ -40,19 +40,19 @@ struct xt_sctp_info {
 #define SCTP_CHUNKMAP_SET(chunkmap, type) 		\
 	do { 						\
 		(chunkmap)[type / bytes(__u32)] |= 	\
-			1 << (type % bytes(__u32));	\
+			1u << (type % bytes(__u32));	\
 	} while (0)
 
 #define SCTP_CHUNKMAP_CLEAR(chunkmap, type)		 	\
 	do {							\
 		(chunkmap)[type / bytes(__u32)] &= 		\
-			~(1 << (type % bytes(__u32)));	\
+			~(1u << (type % bytes(__u32)));	\
 	} while (0)
 
 #define SCTP_CHUNKMAP_IS_SET(chunkmap, type) 			\
 ({								\
 	((chunkmap)[type / bytes (__u32)] & 		\
-		(1 << (type % bytes (__u32)))) ? 1: 0;	\
+		(1u << (type % bytes (__u32)))) ? 1: 0;	\
 })
 
 #define SCTP_CHUNKMAP_RESET(chunkmap) \
diff -druNp --no-dereference linux-libre-4.4.208-gnu/kernel/locking/spinlock_debug.c linux-libre-4.4.209-gnu/kernel/locking/spinlock_debug.c
--- linux-libre-4.4.208-gnu/kernel/locking/spinlock_debug.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/kernel/locking/spinlock_debug.c	2020-01-12 05:22:53.000000000 -0500
@@ -51,19 +51,19 @@ EXPORT_SYMBOL(__rwlock_init);
 
 static void spin_dump(raw_spinlock_t *lock, const char *msg)
 {
-	struct task_struct *owner = NULL;
+	struct task_struct *owner = READ_ONCE(lock->owner);
 
-	if (lock->owner && lock->owner != SPINLOCK_OWNER_INIT)
-		owner = lock->owner;
+	if (owner == SPINLOCK_OWNER_INIT)
+		owner = NULL;
 	printk(KERN_EMERG "BUG: spinlock %s on CPU#%d, %s/%d\n",
 		msg, raw_smp_processor_id(),
 		current->comm, task_pid_nr(current));
 	printk(KERN_EMERG " lock: %pS, .magic: %08x, .owner: %s/%d, "
 			".owner_cpu: %d\n",
-		lock, lock->magic,
+		lock, READ_ONCE(lock->magic),
 		owner ? owner->comm : "<none>",
 		owner ? task_pid_nr(owner) : -1,
-		lock->owner_cpu);
+		READ_ONCE(lock->owner_cpu));
 	dump_stack();
 }
 
@@ -80,16 +80,16 @@ static void spin_bug(raw_spinlock_t *loc
 static inline void
 debug_spin_lock_before(raw_spinlock_t *lock)
 {
-	SPIN_BUG_ON(lock->magic != SPINLOCK_MAGIC, lock, "bad magic");
-	SPIN_BUG_ON(lock->owner == current, lock, "recursion");
-	SPIN_BUG_ON(lock->owner_cpu == raw_smp_processor_id(),
+	SPIN_BUG_ON(READ_ONCE(lock->magic) != SPINLOCK_MAGIC, lock, "bad magic");
+	SPIN_BUG_ON(READ_ONCE(lock->owner) == current, lock, "recursion");
+	SPIN_BUG_ON(READ_ONCE(lock->owner_cpu) == raw_smp_processor_id(),
 							lock, "cpu recursion");
 }
 
 static inline void debug_spin_lock_after(raw_spinlock_t *lock)
 {
-	lock->owner_cpu = raw_smp_processor_id();
-	lock->owner = current;
+	WRITE_ONCE(lock->owner_cpu, raw_smp_processor_id());
+	WRITE_ONCE(lock->owner, current);
 }
 
 static inline void debug_spin_unlock(raw_spinlock_t *lock)
@@ -99,8 +99,8 @@ static inline void debug_spin_unlock(raw
 	SPIN_BUG_ON(lock->owner != current, lock, "wrong owner");
 	SPIN_BUG_ON(lock->owner_cpu != raw_smp_processor_id(),
 							lock, "wrong CPU");
-	lock->owner = SPINLOCK_OWNER_INIT;
-	lock->owner_cpu = -1;
+	WRITE_ONCE(lock->owner, SPINLOCK_OWNER_INIT);
+	WRITE_ONCE(lock->owner_cpu, -1);
 }
 
 static void __spin_lock_debug(raw_spinlock_t *lock)
@@ -233,8 +233,8 @@ static inline void debug_write_lock_befo
 
 static inline void debug_write_lock_after(rwlock_t *lock)
 {
-	lock->owner_cpu = raw_smp_processor_id();
-	lock->owner = current;
+	WRITE_ONCE(lock->owner_cpu, raw_smp_processor_id());
+	WRITE_ONCE(lock->owner, current);
 }
 
 static inline void debug_write_unlock(rwlock_t *lock)
@@ -243,8 +243,8 @@ static inline void debug_write_unlock(rw
 	RWLOCK_BUG_ON(lock->owner != current, lock, "wrong owner");
 	RWLOCK_BUG_ON(lock->owner_cpu != raw_smp_processor_id(),
 							lock, "wrong CPU");
-	lock->owner = SPINLOCK_OWNER_INIT;
-	lock->owner_cpu = -1;
+	WRITE_ONCE(lock->owner, SPINLOCK_OWNER_INIT);
+	WRITE_ONCE(lock->owner_cpu, -1);
 }
 
 #if 0		/* This can cause lockups */
diff -druNp --no-dereference linux-libre-4.4.208-gnu/kernel/taskstats.c linux-libre-4.4.209-gnu/kernel/taskstats.c
--- linux-libre-4.4.208-gnu/kernel/taskstats.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/kernel/taskstats.c	2020-01-12 05:22:53.000000000 -0500
@@ -582,25 +582,33 @@ static int taskstats_user_cmd(struct sk_
 static struct taskstats *taskstats_tgid_alloc(struct task_struct *tsk)
 {
 	struct signal_struct *sig = tsk->signal;
-	struct taskstats *stats;
+	struct taskstats *stats_new, *stats;
 
-	if (sig->stats || thread_group_empty(tsk))
-		goto ret;
+	/* Pairs with smp_store_release() below. */
+	stats = smp_load_acquire(&sig->stats);
+	if (stats || thread_group_empty(tsk))
+		return stats;
 
 	/* No problem if kmem_cache_zalloc() fails */
-	stats = kmem_cache_zalloc(taskstats_cache, GFP_KERNEL);
+	stats_new = kmem_cache_zalloc(taskstats_cache, GFP_KERNEL);
 
 	spin_lock_irq(&tsk->sighand->siglock);
-	if (!sig->stats) {
-		sig->stats = stats;
-		stats = NULL;
+	stats = sig->stats;
+	if (!stats) {
+		/*
+		 * Pairs with smp_store_release() above and order the
+		 * kmem_cache_zalloc().
+		 */
+		smp_store_release(&sig->stats, stats_new);
+		stats = stats_new;
+		stats_new = NULL;
 	}
 	spin_unlock_irq(&tsk->sighand->siglock);
 
-	if (stats)
-		kmem_cache_free(taskstats_cache, stats);
-ret:
-	return sig->stats;
+	if (stats_new)
+		kmem_cache_free(taskstats_cache, stats_new);
+
+	return stats;
 }
 
 /* Send pid data out on exit */
diff -druNp --no-dereference linux-libre-4.4.208-gnu/kernel/trace/ftrace.c linux-libre-4.4.209-gnu/kernel/trace/ftrace.c
--- linux-libre-4.4.208-gnu/kernel/trace/ftrace.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/kernel/trace/ftrace.c	2020-01-12 05:22:53.000000000 -0500
@@ -637,8 +637,7 @@ static int function_stat_show(struct seq
 	}
 
 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
-	avg = rec->time;
-	do_div(avg, rec->counter);
+	avg = div64_ul(rec->time, rec->counter);
 	if (tracing_thresh && (avg < tracing_thresh))
 		goto out;
 #endif
@@ -664,7 +663,8 @@ static int function_stat_show(struct seq
 		 * Divide only 1000 for ns^2 -> us^2 conversion.
 		 * trace_print_graph_duration will divide 1000 again.
 		 */
-		do_div(stddev, rec->counter * (rec->counter - 1) * 1000);
+		stddev = div64_ul(stddev,
+				  rec->counter * (rec->counter - 1) * 1000);
 	}
 
 	trace_seq_init(&s);
diff -druNp --no-dereference linux-libre-4.4.208-gnu/Makefile linux-libre-4.4.209-gnu/Makefile
--- linux-libre-4.4.208-gnu/Makefile	2020-01-04 12:27:26.000000000 -0500
+++ linux-libre-4.4.209-gnu/Makefile	2020-01-12 12:57:31.000000000 -0500
@@ -1,6 +1,6 @@
 VERSION = 4
 PATCHLEVEL = 4
-SUBLEVEL = 208
+SUBLEVEL = 209
 EXTRAVERSION = -gnu
 NAME = Blurry Fish Butt
 
diff -druNp --no-dereference linux-libre-4.4.208-gnu/net/8021q/vlan_dev.c linux-libre-4.4.209-gnu/net/8021q/vlan_dev.c
--- linux-libre-4.4.208-gnu/net/8021q/vlan_dev.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/net/8021q/vlan_dev.c	2020-01-12 05:22:53.000000000 -0500
@@ -606,7 +606,8 @@ static int vlan_dev_init(struct net_devi
 	return 0;
 }
 
-static void vlan_dev_uninit(struct net_device *dev)
+/* Note: this function might be called multiple times for the same device. */
+void vlan_dev_uninit(struct net_device *dev)
 {
 	struct vlan_priority_tci_mapping *pm;
 	struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
diff -druNp --no-dereference linux-libre-4.4.208-gnu/net/8021q/vlan.h linux-libre-4.4.209-gnu/net/8021q/vlan.h
--- linux-libre-4.4.208-gnu/net/8021q/vlan.h	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/net/8021q/vlan.h	2020-01-12 05:22:53.000000000 -0500
@@ -109,6 +109,7 @@ int vlan_check_real_dev(struct net_devic
 void vlan_setup(struct net_device *dev);
 int register_vlan_dev(struct net_device *dev);
 void unregister_vlan_dev(struct net_device *dev, struct list_head *head);
+void vlan_dev_uninit(struct net_device *dev);
 bool vlan_dev_inherit_address(struct net_device *dev,
 			      struct net_device *real_dev);
 
diff -druNp --no-dereference linux-libre-4.4.208-gnu/net/8021q/vlan_netlink.c linux-libre-4.4.209-gnu/net/8021q/vlan_netlink.c
--- linux-libre-4.4.208-gnu/net/8021q/vlan_netlink.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/net/8021q/vlan_netlink.c	2020-01-12 05:22:53.000000000 -0500
@@ -92,11 +92,13 @@ static int vlan_changelink(struct net_de
 	struct ifla_vlan_flags *flags;
 	struct ifla_vlan_qos_mapping *m;
 	struct nlattr *attr;
-	int rem;
+	int rem, err;
 
 	if (data[IFLA_VLAN_FLAGS]) {
 		flags = nla_data(data[IFLA_VLAN_FLAGS]);
-		vlan_dev_change_flags(dev, flags->flags, flags->mask);
+		err = vlan_dev_change_flags(dev, flags->flags, flags->mask);
+		if (err)
+			return err;
 	}
 	if (data[IFLA_VLAN_INGRESS_QOS]) {
 		nla_for_each_nested(attr, data[IFLA_VLAN_INGRESS_QOS], rem) {
@@ -107,7 +109,9 @@ static int vlan_changelink(struct net_de
 	if (data[IFLA_VLAN_EGRESS_QOS]) {
 		nla_for_each_nested(attr, data[IFLA_VLAN_EGRESS_QOS], rem) {
 			m = nla_data(attr);
-			vlan_dev_set_egress_priority(dev, m->from, m->to);
+			err = vlan_dev_set_egress_priority(dev, m->from, m->to);
+			if (err)
+				return err;
 		}
 	}
 	return 0;
@@ -150,10 +154,11 @@ static int vlan_newlink(struct net *src_
 		return -EINVAL;
 
 	err = vlan_changelink(dev, tb, data);
-	if (err < 0)
-		return err;
-
-	return register_vlan_dev(dev);
+	if (!err)
+		err = register_vlan_dev(dev);
+	if (err)
+		vlan_dev_uninit(dev);
+	return err;
 }
 
 static inline size_t vlan_qos_map_size(unsigned int n)
diff -druNp --no-dereference linux-libre-4.4.208-gnu/net/bluetooth/l2cap_core.c linux-libre-4.4.209-gnu/net/bluetooth/l2cap_core.c
--- linux-libre-4.4.208-gnu/net/bluetooth/l2cap_core.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/net/bluetooth/l2cap_core.c	2020-01-12 05:22:53.000000000 -0500
@@ -4897,10 +4897,8 @@ void __l2cap_physical_cfm(struct l2cap_c
 	BT_DBG("chan %p, result %d, local_amp_id %d, remote_amp_id %d",
 	       chan, result, local_amp_id, remote_amp_id);
 
-	if (chan->state == BT_DISCONN || chan->state == BT_CLOSED) {
-		l2cap_chan_unlock(chan);
+	if (chan->state == BT_DISCONN || chan->state == BT_CLOSED)
 		return;
-	}
 
 	if (chan->state != BT_CONNECTED) {
 		l2cap_do_create(chan, result, local_amp_id, remote_amp_id);
diff -druNp --no-dereference linux-libre-4.4.208-gnu/net/core/neighbour.c linux-libre-4.4.209-gnu/net/core/neighbour.c
--- linux-libre-4.4.208-gnu/net/core/neighbour.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/net/core/neighbour.c	2020-01-12 05:22:53.000000000 -0500
@@ -1058,7 +1058,7 @@ static void neigh_update_hhs(struct neig
 
 	if (update) {
 		hh = &neigh->hh;
-		if (hh->hh_len) {
+		if (READ_ONCE(hh->hh_len)) {
 			write_seqlock_bh(&hh->hh_lock);
 			update(hh, neigh->dev, neigh->ha);
 			write_sequnlock_bh(&hh->hh_lock);
@@ -1323,7 +1323,7 @@ int neigh_resolve_output(struct neighbou
 		struct net_device *dev = neigh->dev;
 		unsigned int seq;
 
-		if (dev->header_ops->cache && !neigh->hh.hh_len)
+		if (dev->header_ops->cache && !READ_ONCE(neigh->hh.hh_len))
 			neigh_hh_init(neigh);
 
 		do {
diff -druNp --no-dereference linux-libre-4.4.208-gnu/net/ethernet/eth.c linux-libre-4.4.209-gnu/net/ethernet/eth.c
--- linux-libre-4.4.208-gnu/net/ethernet/eth.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/net/ethernet/eth.c	2020-01-12 05:22:53.000000000 -0500
@@ -235,7 +235,12 @@ int eth_header_cache(const struct neighb
 	eth->h_proto = type;
 	memcpy(eth->h_source, dev->dev_addr, ETH_ALEN);
 	memcpy(eth->h_dest, neigh->ha, ETH_ALEN);
-	hh->hh_len = ETH_HLEN;
+
+	/* Pairs with READ_ONCE() in neigh_resolve_output(),
+	 * neigh_hh_output() and neigh_update_hhs().
+	 */
+	smp_store_release(&hh->hh_len, ETH_HLEN);
+
 	return 0;
 }
 EXPORT_SYMBOL(eth_header_cache);
diff -druNp --no-dereference linux-libre-4.4.208-gnu/net/ipv4/tcp_input.c linux-libre-4.4.209-gnu/net/ipv4/tcp_input.c
--- linux-libre-4.4.208-gnu/net/ipv4/tcp_input.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/net/ipv4/tcp_input.c	2020-01-12 05:22:53.000000000 -0500
@@ -1685,8 +1685,11 @@ tcp_sacktag_write_queue(struct sock *sk,
 		}
 
 		/* Ignore very old stuff early */
-		if (!after(sp[used_sacks].end_seq, prior_snd_una))
+		if (!after(sp[used_sacks].end_seq, prior_snd_una)) {
+			if (i == 0)
+				first_sack_index = -1;
 			continue;
+		}
 
 		used_sacks++;
 	}
diff -druNp --no-dereference linux-libre-4.4.208-gnu/net/llc/llc_station.c linux-libre-4.4.209-gnu/net/llc/llc_station.c
--- linux-libre-4.4.208-gnu/net/llc/llc_station.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/net/llc/llc_station.c	2020-01-12 05:22:53.000000000 -0500
@@ -32,7 +32,7 @@ static int llc_stat_ev_rx_null_dsap_xid_
 	return LLC_PDU_IS_CMD(pdu) &&			/* command PDU */
 	       LLC_PDU_TYPE_IS_U(pdu) &&		/* U type PDU */
 	       LLC_U_PDU_CMD(pdu) == LLC_1_PDU_CMD_XID &&
-	       !pdu->dsap ? 0 : 1;			/* NULL DSAP value */
+	       !pdu->dsap;				/* NULL DSAP value */
 }
 
 static int llc_stat_ev_rx_null_dsap_test_c(struct sk_buff *skb)
@@ -42,7 +42,7 @@ static int llc_stat_ev_rx_null_dsap_test
 	return LLC_PDU_IS_CMD(pdu) &&			/* command PDU */
 	       LLC_PDU_TYPE_IS_U(pdu) &&		/* U type PDU */
 	       LLC_U_PDU_CMD(pdu) == LLC_1_PDU_CMD_TEST &&
-	       !pdu->dsap ? 0 : 1;			/* NULL DSAP */
+	       !pdu->dsap;				/* NULL DSAP */
 }
 
 static int llc_station_ac_send_xid_r(struct sk_buff *skb)
diff -druNp --no-dereference linux-libre-4.4.208-gnu/net/netfilter/nf_conntrack_netlink.c linux-libre-4.4.209-gnu/net/netfilter/nf_conntrack_netlink.c
--- linux-libre-4.4.208-gnu/net/netfilter/nf_conntrack_netlink.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/net/netfilter/nf_conntrack_netlink.c	2020-01-12 05:22:53.000000000 -0500
@@ -3390,6 +3390,9 @@ static void __net_exit ctnetlink_net_exi
 
 	list_for_each_entry(net, net_exit_list, exit_list)
 		ctnetlink_net_exit(net);
+
+	/* wait for other cpus until they are done with ctnl_notifiers */
+	synchronize_rcu();
 }
 
 static struct pernet_operations ctnetlink_net_ops = {
diff -druNp --no-dereference linux-libre-4.4.208-gnu/net/rfkill/core.c linux-libre-4.4.209-gnu/net/rfkill/core.c
--- linux-libre-4.4.208-gnu/net/rfkill/core.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/net/rfkill/core.c	2020-01-12 05:22:53.000000000 -0500
@@ -941,10 +941,13 @@ static void rfkill_sync_work(struct work
 int __must_check rfkill_register(struct rfkill *rfkill)
 {
 	static unsigned long rfkill_no;
-	struct device *dev = &rfkill->dev;
+	struct device *dev;
 	int error;
 
-	BUG_ON(!rfkill);
+	if (!rfkill)
+		return -EINVAL;
+
+	dev = &rfkill->dev;
 
 	mutex_lock(&rfkill_global_mutex);
 
diff -druNp --no-dereference linux-libre-4.4.208-gnu/net/sched/sch_fq.c linux-libre-4.4.209-gnu/net/sched/sch_fq.c
--- linux-libre-4.4.208-gnu/net/sched/sch_fq.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/net/sched/sch_fq.c	2020-01-12 05:22:53.000000000 -0500
@@ -706,7 +706,7 @@ static int fq_change(struct Qdisc *sch,
 	if (tb[TCA_FQ_QUANTUM]) {
 		u32 quantum = nla_get_u32(tb[TCA_FQ_QUANTUM]);
 
-		if (quantum > 0)
+		if (quantum > 0 && quantum <= (1 << 20))
 			q->quantum = quantum;
 		else
 			err = -EINVAL;
diff -druNp --no-dereference linux-libre-4.4.208-gnu/net/sctp/sm_sideeffect.c linux-libre-4.4.209-gnu/net/sctp/sm_sideeffect.c
--- linux-libre-4.4.208-gnu/net/sctp/sm_sideeffect.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/net/sctp/sm_sideeffect.c	2020-01-12 05:22:53.000000000 -0500
@@ -1333,8 +1333,10 @@ static int sctp_cmd_interpreter(sctp_eve
 			/* Generate an INIT ACK chunk.  */
 			new_obj = sctp_make_init_ack(asoc, chunk, GFP_ATOMIC,
 						     0);
-			if (!new_obj)
-				goto nomem;
+			if (!new_obj) {
+				error = -ENOMEM;
+				break;
+			}
 
 			sctp_add_cmd_sf(commands, SCTP_CMD_REPLY,
 					SCTP_CHUNK(new_obj));
@@ -1356,7 +1358,8 @@ static int sctp_cmd_interpreter(sctp_eve
 			if (!new_obj) {
 				if (cmd->obj.chunk)
 					sctp_chunk_free(cmd->obj.chunk);
-				goto nomem;
+				error = -ENOMEM;
+				break;
 			}
 			sctp_add_cmd_sf(commands, SCTP_CMD_REPLY,
 					SCTP_CHUNK(new_obj));
@@ -1403,8 +1406,10 @@ static int sctp_cmd_interpreter(sctp_eve
 
 			/* Generate a SHUTDOWN chunk.  */
 			new_obj = sctp_make_shutdown(asoc, chunk);
-			if (!new_obj)
-				goto nomem;
+			if (!new_obj) {
+				error = -ENOMEM;
+				break;
+			}
 			sctp_add_cmd_sf(commands, SCTP_CMD_REPLY,
 					SCTP_CHUNK(new_obj));
 			break;
@@ -1733,11 +1738,17 @@ static int sctp_cmd_interpreter(sctp_eve
 			break;
 		}
 
-		if (error)
+		if (error) {
+			cmd = sctp_next_cmd(commands);
+			while (cmd) {
+				if (cmd->verb == SCTP_CMD_REPLY)
+					sctp_chunk_free(cmd->obj.chunk);
+				cmd = sctp_next_cmd(commands);
+			}
 			break;
+		}
 	}
 
-out:
 	/* If this is in response to a received chunk, wait until
 	 * we are done with the packet to open the queue so that we don't
 	 * send multiple packets in response to a single request.
@@ -1748,8 +1759,5 @@ out:
 	} else if (local_cork)
 		error = sctp_outq_uncork(&asoc->outqueue);
 	return error;
-nomem:
-	error = -ENOMEM;
-	goto out;
 }
 
diff -druNp --no-dereference linux-libre-4.4.208-gnu/scripts/kconfig/expr.c linux-libre-4.4.209-gnu/scripts/kconfig/expr.c
--- linux-libre-4.4.208-gnu/scripts/kconfig/expr.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/scripts/kconfig/expr.c	2020-01-12 05:22:53.000000000 -0500
@@ -201,6 +201,13 @@ static int expr_eq(struct expr *e1, stru
 {
 	int res, old_count;
 
+	/*
+	 * A NULL expr is taken to be yes, but there's also a different way to
+	 * represent yes. expr_is_yes() checks for either representation.
+	 */
+	if (!e1 || !e2)
+		return expr_is_yes(e1) && expr_is_yes(e2);
+
 	if (e1->type != e2->type)
 		return 0;
 	switch (e1->type) {
diff -druNp --no-dereference linux-libre-4.4.208-gnu/sound/isa/cs423x/cs4236.c linux-libre-4.4.209-gnu/sound/isa/cs423x/cs4236.c
--- linux-libre-4.4.208-gnu/sound/isa/cs423x/cs4236.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/sound/isa/cs423x/cs4236.c	2020-01-12 05:22:53.000000000 -0500
@@ -293,7 +293,8 @@ static int snd_cs423x_pnp_init_mpu(int d
 	} else {
 		mpu_port[dev] = pnp_port_start(pdev, 0);
 		if (mpu_irq[dev] >= 0 &&
-		    pnp_irq_valid(pdev, 0) && pnp_irq(pdev, 0) >= 0) {
+		    pnp_irq_valid(pdev, 0) &&
+		    pnp_irq(pdev, 0) != (resource_size_t)-1) {
 			mpu_irq[dev] = pnp_irq(pdev, 0);
 		} else {
 			mpu_irq[dev] = -1;	/* disable interrupt */
diff -druNp --no-dereference linux-libre-4.4.208-gnu/sound/pci/ice1712/ice1724.c linux-libre-4.4.209-gnu/sound/pci/ice1712/ice1724.c
--- linux-libre-4.4.208-gnu/sound/pci/ice1712/ice1724.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/sound/pci/ice1712/ice1724.c	2020-01-12 05:22:53.000000000 -0500
@@ -663,6 +663,7 @@ static int snd_vt1724_set_pro_rate(struc
 	unsigned long flags;
 	unsigned char mclk_change;
 	unsigned int i, old_rate;
+	bool call_set_rate = false;
 
 	if (rate > ice->hw_rates->list[ice->hw_rates->count - 1])
 		return -EINVAL;
@@ -686,7 +687,7 @@ static int snd_vt1724_set_pro_rate(struc
 		 * setting clock rate for internal clock mode */
 		old_rate = ice->get_rate(ice);
 		if (force || (old_rate != rate))
-			ice->set_rate(ice, rate);
+			call_set_rate = true;
 		else if (rate == ice->cur_rate) {
 			spin_unlock_irqrestore(&ice->reg_lock, flags);
 			return 0;
@@ -694,12 +695,14 @@ static int snd_vt1724_set_pro_rate(struc
 	}
 
 	ice->cur_rate = rate;
+	spin_unlock_irqrestore(&ice->reg_lock, flags);
+
+	if (call_set_rate)
+		ice->set_rate(ice, rate);
 
 	/* setting master clock */
 	mclk_change = ice->set_mclk(ice, rate);
 
-	spin_unlock_irqrestore(&ice->reg_lock, flags);
-
 	if (mclk_change && ice->gpio.i2s_mclk_changed)
 		ice->gpio.i2s_mclk_changed(ice);
 	if (ice->gpio.set_pro_rate)
diff -druNp --no-dereference linux-libre-4.4.208-gnu/sound/soc/codecs/wm8962.c linux-libre-4.4.209-gnu/sound/soc/codecs/wm8962.c
--- linux-libre-4.4.208-gnu/sound/soc/codecs/wm8962.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/sound/soc/codecs/wm8962.c	2020-01-12 05:22:53.000000000 -0500
@@ -2792,7 +2792,7 @@ static int fll_factors(struct _fll_div *
 
 	if (target % Fref == 0) {
 		fll_div->theta = 0;
-		fll_div->lambda = 0;
+		fll_div->lambda = 1;
 	} else {
 		gcd_fll = gcd(target, fratio * Fref);
 
@@ -2862,7 +2862,7 @@ static int wm8962_set_fll(struct snd_soc
 		return -EINVAL;
 	}
 
-	if (fll_div.theta || fll_div.lambda)
+	if (fll_div.theta)
 		fll1 |= WM8962_FLL_FRAC;
 
 	/* Stop the FLL while we reconfigure */
diff -druNp --no-dereference linux-libre-4.4.208-gnu/tools/perf/builtin-report.c linux-libre-4.4.209-gnu/tools/perf/builtin-report.c
--- linux-libre-4.4.208-gnu/tools/perf/builtin-report.c	2020-01-04 07:34:38.000000000 -0500
+++ linux-libre-4.4.209-gnu/tools/perf/builtin-report.c	2020-01-12 05:22:53.000000000 -0500
@@ -285,13 +285,6 @@ static int report__setup_sample_type(str
 				PERF_SAMPLE_BRANCH_ANY))
 		rep->nonany_branch_mode = true;
 
-#ifndef HAVE_LIBUNWIND_SUPPORT
-	if (dwarf_callchain_users) {
-		ui__warning("Please install libunwind development packages "
-			    "during the perf build.\n");
-	}
-#endif
-
 	return 0;
 }
 
