diff --git linux-libre-4.19.185-gnu/Makefile linux-libre-4.19.186-gnu/Makefile
index 69794e600c4f..baca636ce059 100644
--- linux-libre-4.19.185-gnu/Makefile
+++ linux-libre-4.19.186-gnu/Makefile
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 VERSION = 4
 PATCHLEVEL = 19
-SUBLEVEL = 185
+SUBLEVEL = 186
 EXTRAVERSION = -gnu
 NAME = "People's Front"
 
diff --git linux-libre-4.19.185-gnu/arch/arm/boot/dts/am33xx.dtsi linux-libre-4.19.186-gnu/arch/arm/boot/dts/am33xx.dtsi
index c19082f71ecb..b54ebf49f540 100644
--- linux-libre-4.19.185-gnu/arch/arm/boot/dts/am33xx.dtsi
+++ linux-libre-4.19.186-gnu/arch/arm/boot/dts/am33xx.dtsi
@@ -39,6 +39,9 @@
 		ethernet1 = &cpsw_emac1;
 		spi0 = &spi0;
 		spi1 = &spi1;
+		mmc0 = &mmc1;
+		mmc1 = &mmc2;
+		mmc2 = &mmc3;
 	};
 
 	cpus {
diff --git linux-libre-4.19.185-gnu/arch/ia64/kernel/err_inject.c linux-libre-4.19.186-gnu/arch/ia64/kernel/err_inject.c
index 8b5b8e6bc9d9..dd5bfed52031 100644
--- linux-libre-4.19.185-gnu/arch/ia64/kernel/err_inject.c
+++ linux-libre-4.19.186-gnu/arch/ia64/kernel/err_inject.c
@@ -59,7 +59,7 @@ show_##name(struct device *dev, struct device_attribute *attr,	\
 		char *buf)						\
 {									\
 	u32 cpu=dev->id;						\
-	return sprintf(buf, "%lx\n", name[cpu]);			\
+	return sprintf(buf, "%llx\n", name[cpu]);			\
 }
 
 #define store(name)							\
@@ -86,9 +86,9 @@ store_call_start(struct device *dev, struct device_attribute *attr,
 
 #ifdef ERR_INJ_DEBUG
 	printk(KERN_DEBUG "pal_mc_err_inject for cpu%d:\n", cpu);
-	printk(KERN_DEBUG "err_type_info=%lx,\n", err_type_info[cpu]);
-	printk(KERN_DEBUG "err_struct_info=%lx,\n", err_struct_info[cpu]);
-	printk(KERN_DEBUG "err_data_buffer=%lx, %lx, %lx.\n",
+	printk(KERN_DEBUG "err_type_info=%llx,\n", err_type_info[cpu]);
+	printk(KERN_DEBUG "err_struct_info=%llx,\n", err_struct_info[cpu]);
+	printk(KERN_DEBUG "err_data_buffer=%llx, %llx, %llx.\n",
 			  err_data_buffer[cpu].data1,
 			  err_data_buffer[cpu].data2,
 			  err_data_buffer[cpu].data3);
@@ -117,8 +117,8 @@ store_call_start(struct device *dev, struct device_attribute *attr,
 
 #ifdef ERR_INJ_DEBUG
 	printk(KERN_DEBUG "Returns: status=%d,\n", (int)status[cpu]);
-	printk(KERN_DEBUG "capabilities=%lx,\n", capabilities[cpu]);
-	printk(KERN_DEBUG "resources=%lx\n", resources[cpu]);
+	printk(KERN_DEBUG "capabilities=%llx,\n", capabilities[cpu]);
+	printk(KERN_DEBUG "resources=%llx\n", resources[cpu]);
 #endif
 	return size;
 }
@@ -131,7 +131,7 @@ show_virtual_to_phys(struct device *dev, struct device_attribute *attr,
 			char *buf)
 {
 	unsigned int cpu=dev->id;
-	return sprintf(buf, "%lx\n", phys_addr[cpu]);
+	return sprintf(buf, "%llx\n", phys_addr[cpu]);
 }
 
 static ssize_t
@@ -145,7 +145,7 @@ store_virtual_to_phys(struct device *dev, struct device_attribute *attr,
 	ret = get_user_pages_fast(virt_addr, 1, FOLL_WRITE, NULL);
 	if (ret<=0) {
 #ifdef ERR_INJ_DEBUG
-		printk("Virtual address %lx is not existing.\n",virt_addr);
+		printk("Virtual address %llx is not existing.\n", virt_addr);
 #endif
 		return -EINVAL;
 	}
@@ -163,7 +163,7 @@ show_err_data_buffer(struct device *dev,
 {
 	unsigned int cpu=dev->id;
 
-	return sprintf(buf, "%lx, %lx, %lx\n",
+	return sprintf(buf, "%llx, %llx, %llx\n",
 			err_data_buffer[cpu].data1,
 			err_data_buffer[cpu].data2,
 			err_data_buffer[cpu].data3);
@@ -178,13 +178,13 @@ store_err_data_buffer(struct device *dev,
 	int ret;
 
 #ifdef ERR_INJ_DEBUG
-	printk("write err_data_buffer=[%lx,%lx,%lx] on cpu%d\n",
+	printk("write err_data_buffer=[%llx,%llx,%llx] on cpu%d\n",
 		 err_data_buffer[cpu].data1,
 		 err_data_buffer[cpu].data2,
 		 err_data_buffer[cpu].data3,
 		 cpu);
 #endif
-	ret=sscanf(buf, "%lx, %lx, %lx",
+	ret = sscanf(buf, "%llx, %llx, %llx",
 			&err_data_buffer[cpu].data1,
 			&err_data_buffer[cpu].data2,
 			&err_data_buffer[cpu].data3);
diff --git linux-libre-4.19.185-gnu/arch/ia64/kernel/mca.c linux-libre-4.19.186-gnu/arch/ia64/kernel/mca.c
index 6115464d5f03..d7400b2844f1 100644
--- linux-libre-4.19.185-gnu/arch/ia64/kernel/mca.c
+++ linux-libre-4.19.186-gnu/arch/ia64/kernel/mca.c
@@ -1860,7 +1860,7 @@ ia64_mca_cpu_init(void *cpu_data)
 			data = mca_bootmem();
 			first_time = 0;
 		} else
-			data = (void *)__get_free_pages(GFP_KERNEL,
+			data = (void *)__get_free_pages(GFP_ATOMIC,
 							get_order(sz));
 		if (!data)
 			panic("Could not allocate MCA memory for cpu %d\n",
diff --git linux-libre-4.19.185-gnu/arch/x86/Makefile linux-libre-4.19.186-gnu/arch/x86/Makefile
index 75200b421f29..6ebdbad21fb2 100644
--- linux-libre-4.19.185-gnu/arch/x86/Makefile
+++ linux-libre-4.19.186-gnu/arch/x86/Makefile
@@ -34,7 +34,7 @@ M16_CFLAGS	 := $(call cc-option, -m16, $(CODE16GCC_CFLAGS))
 REALMODE_CFLAGS	:= $(M16_CFLAGS) -g -Os -DDISABLE_BRANCH_PROFILING \
 		   -Wall -Wstrict-prototypes -march=i386 -mregparm=3 \
 		   -fno-strict-aliasing -fomit-frame-pointer -fno-pic \
-		   -mno-mmx -mno-sse
+		   -mno-mmx -mno-sse $(call cc-option,-fcf-protection=none)
 
 REALMODE_CFLAGS += $(call __cc-option, $(CC), $(REALMODE_CFLAGS), -ffreestanding)
 REALMODE_CFLAGS += $(call __cc-option, $(CC), $(REALMODE_CFLAGS), -fno-stack-protector)
diff --git linux-libre-4.19.185-gnu/arch/x86/net/bpf_jit_comp.c linux-libre-4.19.186-gnu/arch/x86/net/bpf_jit_comp.c
index 46ab92831251..924ca27a6139 100644
--- linux-libre-4.19.185-gnu/arch/x86/net/bpf_jit_comp.c
+++ linux-libre-4.19.186-gnu/arch/x86/net/bpf_jit_comp.c
@@ -1019,7 +1019,16 @@ emit_jmp:
 		}
 
 		if (image) {
-			if (unlikely(proglen + ilen > oldproglen)) {
+			/*
+			 * When populating the image, assert that:
+			 *
+			 *  i) We do not write beyond the allocated space, and
+			 * ii) addrs[i] did not change from the prior run, in order
+			 *     to validate assumptions made for computing branch
+			 *     displacements.
+			 */
+			if (unlikely(proglen + ilen > oldproglen ||
+				     proglen + ilen != addrs[i])) {
 				pr_err("bpf_jit: fatal error\n");
 				return -EFAULT;
 			}
diff --git linux-libre-4.19.185-gnu/arch/x86/net/bpf_jit_comp32.c linux-libre-4.19.186-gnu/arch/x86/net/bpf_jit_comp32.c
index 2eaf1900ba67..adee990abab1 100644
--- linux-libre-4.19.185-gnu/arch/x86/net/bpf_jit_comp32.c
+++ linux-libre-4.19.186-gnu/arch/x86/net/bpf_jit_comp32.c
@@ -2201,7 +2201,16 @@ notyet:
 		}
 
 		if (image) {
-			if (unlikely(proglen + ilen > oldproglen)) {
+			/*
+			 * When populating the image, assert that:
+			 *
+			 *  i) We do not write beyond the allocated space, and
+			 * ii) addrs[i] did not change from the prior run, in order
+			 *     to validate assumptions made for computing branch
+			 *     displacements.
+			 */
+			if (unlikely(proglen + ilen > oldproglen ||
+				     proglen + ilen != addrs[i])) {
 				pr_err("bpf_jit: fatal error\n");
 				return -EFAULT;
 			}
diff --git linux-libre-4.19.185-gnu/drivers/bus/ti-sysc.c linux-libre-4.19.186-gnu/drivers/bus/ti-sysc.c
index 54c8c8644df2..b6a278183d82 100644
--- linux-libre-4.19.185-gnu/drivers/bus/ti-sysc.c
+++ linux-libre-4.19.186-gnu/drivers/bus/ti-sysc.c
@@ -1814,7 +1814,9 @@ static int sysc_remove(struct platform_device *pdev)
 
 	pm_runtime_put_sync(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
-	reset_control_assert(ddata->rsts);
+
+	if (!reset_control_status(ddata->rsts))
+		reset_control_assert(ddata->rsts);
 
 unprepare:
 	sysc_unprepare(ddata);
diff --git linux-libre-4.19.185-gnu/drivers/gpu/drm/msm/msm_fence.c linux-libre-4.19.186-gnu/drivers/gpu/drm/msm/msm_fence.c
index 349c12f670eb..6c11be79574e 100644
--- linux-libre-4.19.185-gnu/drivers/gpu/drm/msm/msm_fence.c
+++ linux-libre-4.19.186-gnu/drivers/gpu/drm/msm/msm_fence.c
@@ -56,7 +56,7 @@ int msm_wait_fence(struct msm_fence_context *fctx, uint32_t fence,
 	int ret;
 
 	if (fence > fctx->last_fence) {
-		DRM_ERROR("%s: waiting on invalid fence: %u (of %u)\n",
+		DRM_ERROR_RATELIMITED("%s: waiting on invalid fence: %u (of %u)\n",
 				fctx->name, fence, fctx->last_fence);
 		return -EINVAL;
 	}
diff --git linux-libre-4.19.185-gnu/drivers/isdn/hardware/mISDN/mISDNipac.c linux-libre-4.19.186-gnu/drivers/isdn/hardware/mISDN/mISDNipac.c
index 4d78f870435e..71e635d6c64a 100644
--- linux-libre-4.19.185-gnu/drivers/isdn/hardware/mISDN/mISDNipac.c
+++ linux-libre-4.19.186-gnu/drivers/isdn/hardware/mISDN/mISDNipac.c
@@ -710,7 +710,7 @@ isac_release(struct isac_hw *isac)
 {
 	if (isac->type & IPAC_TYPE_ISACX)
 		WriteISAC(isac, ISACX_MASK, 0xff);
-	else
+	else if (isac->type != 0)
 		WriteISAC(isac, ISAC_MASK, 0xff);
 	if (isac->dch.timer.function != NULL) {
 		del_timer(&isac->dch.timer);
diff --git linux-libre-4.19.185-gnu/drivers/net/ethernet/marvell/pxa168_eth.c linux-libre-4.19.186-gnu/drivers/net/ethernet/marvell/pxa168_eth.c
index ff2fea0f8b75..0d6a4e47e7a5 100644
--- linux-libre-4.19.185-gnu/drivers/net/ethernet/marvell/pxa168_eth.c
+++ linux-libre-4.19.186-gnu/drivers/net/ethernet/marvell/pxa168_eth.c
@@ -1564,8 +1564,8 @@ static int pxa168_eth_remove(struct platform_device *pdev)
 
 	mdiobus_unregister(pep->smi_bus);
 	mdiobus_free(pep->smi_bus);
-	unregister_netdev(dev);
 	cancel_work_sync(&pep->tx_timeout_task);
+	unregister_netdev(dev);
 	free_netdev(dev);
 	return 0;
 }
diff --git linux-libre-4.19.185-gnu/drivers/platform/x86/intel-hid.c linux-libre-4.19.186-gnu/drivers/platform/x86/intel-hid.c
index d7d69eadb9bb..fa3cda69cec9 100644
--- linux-libre-4.19.185-gnu/drivers/platform/x86/intel-hid.c
+++ linux-libre-4.19.186-gnu/drivers/platform/x86/intel-hid.c
@@ -94,6 +94,13 @@ static const struct dmi_system_id button_array_table[] = {
 			DMI_MATCH(DMI_PRODUCT_NAME, "HP Spectre x2 Detachable"),
 		},
 	},
+	{
+		.ident = "Lenovo ThinkPad X1 Tablet Gen 2",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_FAMILY, "ThinkPad X1 Tablet Gen 2"),
+		},
+	},
 	{ }
 };
 
diff --git linux-libre-4.19.185-gnu/drivers/platform/x86/thinkpad_acpi.c linux-libre-4.19.186-gnu/drivers/platform/x86/thinkpad_acpi.c
index a6e69f2495d2..559698640fe2 100644
--- linux-libre-4.19.185-gnu/drivers/platform/x86/thinkpad_acpi.c
+++ linux-libre-4.19.186-gnu/drivers/platform/x86/thinkpad_acpi.c
@@ -4102,13 +4102,19 @@ static bool hotkey_notify_6xxx(const u32 hkey,
 
 	case TP_HKEY_EV_KEY_NUMLOCK:
 	case TP_HKEY_EV_KEY_FN:
-	case TP_HKEY_EV_KEY_FN_ESC:
 		/* key press events, we just ignore them as long as the EC
 		 * is still reporting them in the normal keyboard stream */
 		*send_acpi_ev = false;
 		*ignore_acpi_ev = true;
 		return true;
 
+	case TP_HKEY_EV_KEY_FN_ESC:
+		/* Get the media key status to foce the status LED to update */
+		acpi_evalf(hkey_handle, NULL, "GMKS", "v");
+		*send_acpi_ev = false;
+		*ignore_acpi_ev = true;
+		return true;
+
 	case TP_HKEY_EV_TABLET_CHANGED:
 		tpacpi_input_send_tabletsw();
 		hotkey_tablet_mode_notify_change();
diff --git linux-libre-4.19.185-gnu/drivers/target/target_core_pscsi.c linux-libre-4.19.186-gnu/drivers/target/target_core_pscsi.c
index 47d76c862014..02c4e3beb264 100644
--- linux-libre-4.19.185-gnu/drivers/target/target_core_pscsi.c
+++ linux-libre-4.19.186-gnu/drivers/target/target_core_pscsi.c
@@ -970,6 +970,14 @@ new_bio:
 
 	return 0;
 fail:
+	if (bio)
+		bio_put(bio);
+	while (req->bio) {
+		bio = req->bio;
+		req->bio = bio->bi_next;
+		bio_put(bio);
+	}
+	req->biotail = NULL;
 	return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
 }
 
diff --git linux-libre-4.19.185-gnu/fs/cifs/file.c linux-libre-4.19.186-gnu/fs/cifs/file.c
index 5cb15649adb0..7b482489bd22 100644
--- linux-libre-4.19.185-gnu/fs/cifs/file.c
+++ linux-libre-4.19.186-gnu/fs/cifs/file.c
@@ -163,6 +163,7 @@ int cifs_posix_open(char *full_path, struct inode **pinode,
 			goto posix_open_ret;
 		}
 	} else {
+		cifs_revalidate_mapping(*pinode);
 		cifs_fattr_to_inode(*pinode, &fattr);
 	}
 
diff --git linux-libre-4.19.185-gnu/fs/cifs/smb2misc.c linux-libre-4.19.186-gnu/fs/cifs/smb2misc.c
index 7d875a47d022..7177720e822e 100644
--- linux-libre-4.19.185-gnu/fs/cifs/smb2misc.c
+++ linux-libre-4.19.186-gnu/fs/cifs/smb2misc.c
@@ -738,8 +738,8 @@ smb2_is_valid_oplock_break(char *buffer, struct TCP_Server_Info *server)
 		}
 	}
 	spin_unlock(&cifs_tcp_ses_lock);
-	cifs_dbg(FYI, "Can not process oplock break for non-existent connection\n");
-	return false;
+	cifs_dbg(FYI, "No file id matched, oplock break ignored\n");
+	return true;
 }
 
 void
diff --git linux-libre-4.19.185-gnu/init/Kconfig linux-libre-4.19.186-gnu/init/Kconfig
index 5eb91dde4018..b56a125b5a76 100644
--- linux-libre-4.19.185-gnu/init/Kconfig
+++ linux-libre-4.19.186-gnu/init/Kconfig
@@ -66,8 +66,7 @@ config INIT_ENV_ARG_LIMIT
 
 config COMPILE_TEST
 	bool "Compile also drivers which will not load"
-	depends on !UML
-	default n
+	depends on HAS_IOMEM
 	help
 	  Some drivers can be compiled on a different platform than they are
 	  intended to be run on. Despite they cannot be loaded there (or even
diff --git linux-libre-4.19.185-gnu/net/mac80211/main.c linux-libre-4.19.186-gnu/net/mac80211/main.c
index 68db2a356443..f44d00f35fe7 100644
--- linux-libre-4.19.185-gnu/net/mac80211/main.c
+++ linux-libre-4.19.186-gnu/net/mac80211/main.c
@@ -931,8 +931,19 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
 			continue;
 
 		if (!dflt_chandef.chan) {
+			/*
+			 * Assign the first enabled channel to dflt_chandef
+			 * from the list of channels
+			 */
+			for (i = 0; i < sband->n_channels; i++)
+				if (!(sband->channels[i].flags &
+						IEEE80211_CHAN_DISABLED))
+					break;
+			/* if none found then use the first anyway */
+			if (i == sband->n_channels)
+				i = 0;
 			cfg80211_chandef_create(&dflt_chandef,
-						&sband->channels[0],
+						&sband->channels[i],
 						NL80211_CHAN_NO_HT);
 			/* init channel we're on */
 			if (!local->use_chanctx && !local->_oper_chandef.chan) {
