diff --git a/Makefile b/Makefile
index e84966c49117..f7e7e365e2ff 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 VERSION = 4
 PATCHLEVEL = 19
-SUBLEVEL = 49
+SUBLEVEL = 50
 EXTRAVERSION =
 NAME = "People's Front"
 
diff --git a/arch/mips/ath79/setup.c b/arch/mips/ath79/setup.c
index 7c0b2e6cdfbd..4c7a93f4039a 100644
--- a/arch/mips/ath79/setup.c
+++ b/arch/mips/ath79/setup.c
@@ -211,6 +211,12 @@ const char *get_system_type(void)
 	return ath79_sys_type;
 }
 
+int get_c0_perfcount_int(void)
+{
+	return ATH79_MISC_IRQ(5);
+}
+EXPORT_SYMBOL_GPL(get_c0_perfcount_int);
+
 unsigned int get_c0_compare_int(void)
 {
 	return CP0_LEGACY_COMPARE_IRQ;
diff --git a/arch/mips/mm/mmap.c b/arch/mips/mm/mmap.c
index 2f616ebeb7e0..7755a1fad05a 100644
--- a/arch/mips/mm/mmap.c
+++ b/arch/mips/mm/mmap.c
@@ -203,6 +203,11 @@ unsigned long arch_randomize_brk(struct mm_struct *mm)
 
 int __virt_addr_valid(const volatile void *kaddr)
 {
+	unsigned long vaddr = (unsigned long)vaddr;
+
+	if ((vaddr < PAGE_OFFSET) || (vaddr >= MAP_BASE))
+		return 0;
+
 	return pfn_valid(PFN_DOWN(virt_to_phys(kaddr)));
 }
 EXPORT_SYMBOL_GPL(__virt_addr_valid);
diff --git a/arch/mips/pistachio/Platform b/arch/mips/pistachio/Platform
index d80cd612df1f..c3592b374ad2 100644
--- a/arch/mips/pistachio/Platform
+++ b/arch/mips/pistachio/Platform
@@ -6,3 +6,4 @@ cflags-$(CONFIG_MACH_PISTACHIO)		+=				\
 		-I$(srctree)/arch/mips/include/asm/mach-pistachio
 load-$(CONFIG_MACH_PISTACHIO)		+= 0xffffffff80400000
 zload-$(CONFIG_MACH_PISTACHIO)		+= 0xffffffff81000000
+all-$(CONFIG_MACH_PISTACHIO)		:= uImage.gz
diff --git a/arch/powerpc/kernel/nvram_64.c b/arch/powerpc/kernel/nvram_64.c
index 22e9d281324d..e7d4ce6964ae 100644
--- a/arch/powerpc/kernel/nvram_64.c
+++ b/arch/powerpc/kernel/nvram_64.c
@@ -563,8 +563,6 @@ static int nvram_pstore_init(void)
 	nvram_pstore_info.buf = oops_data;
 	nvram_pstore_info.bufsize = oops_data_sz;
 
-	spin_lock_init(&nvram_pstore_info.buf_lock);
-
 	rc = pstore_register(&nvram_pstore_info);
 	if (rc && (rc != -EPERM))
 		/* Print error only when pstore.backend == nvram */
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index 72af23bacbb5..a6e3c7022245 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -107,7 +107,6 @@ void bust_spinlocks(int yes)
 
 /*
  * Find out which address space caused the exception.
- * Access register mode is impossible, ignore space == 3.
  */
 static inline enum fault_type get_fault_type(struct pt_regs *regs)
 {
@@ -132,6 +131,10 @@ static inline enum fault_type get_fault_type(struct pt_regs *regs)
 		}
 		return VDSO_FAULT;
 	}
+	if (trans_exc_code == 1) {
+		/* access register mode, not used in the kernel */
+		return USER_FAULT;
+	}
 	/* home space exception -> access via kernel ASCE */
 	return KERNEL_FAULT;
 }
diff --git a/arch/x86/lib/insn-eval.c b/arch/x86/lib/insn-eval.c
index 9119d8e41f1f..87dcba101e56 100644
--- a/arch/x86/lib/insn-eval.c
+++ b/arch/x86/lib/insn-eval.c
@@ -555,7 +555,8 @@ static int get_reg_offset_16(struct insn *insn, struct pt_regs *regs,
 }
 
 /**
- * get_desc() - Obtain pointer to a segment descriptor
+ * get_desc() - Obtain contents of a segment descriptor
+ * @out:	Segment descriptor contents on success
  * @sel:	Segment selector
  *
  * Given a segment selector, obtain a pointer to the segment descriptor.
@@ -563,18 +564,18 @@ static int get_reg_offset_16(struct insn *insn, struct pt_regs *regs,
  *
  * Returns:
  *
- * Pointer to segment descriptor on success.
+ * True on success, false on failure.
  *
  * NULL on error.
  */
-static struct desc_struct *get_desc(unsigned short sel)
+static bool get_desc(struct desc_struct *out, unsigned short sel)
 {
 	struct desc_ptr gdt_desc = {0, 0};
 	unsigned long desc_base;
 
 #ifdef CONFIG_MODIFY_LDT_SYSCALL
 	if ((sel & SEGMENT_TI_MASK) == SEGMENT_LDT) {
-		struct desc_struct *desc = NULL;
+		bool success = false;
 		struct ldt_struct *ldt;
 
 		/* Bits [15:3] contain the index of the desired entry. */
@@ -582,12 +583,14 @@ static struct desc_struct *get_desc(unsigned short sel)
 
 		mutex_lock(&current->active_mm->context.lock);
 		ldt = current->active_mm->context.ldt;
-		if (ldt && sel < ldt->nr_entries)
-			desc = &ldt->entries[sel];
+		if (ldt && sel < ldt->nr_entries) {
+			*out = ldt->entries[sel];
+			success = true;
+		}
 
 		mutex_unlock(&current->active_mm->context.lock);
 
-		return desc;
+		return success;
 	}
 #endif
 	native_store_gdt(&gdt_desc);
@@ -602,9 +605,10 @@ static struct desc_struct *get_desc(unsigned short sel)
 	desc_base = sel & ~(SEGMENT_RPL_MASK | SEGMENT_TI_MASK);
 
 	if (desc_base > gdt_desc.size)
-		return NULL;
+		return false;
 
-	return (struct desc_struct *)(gdt_desc.address + desc_base);
+	*out = *(struct desc_struct *)(gdt_desc.address + desc_base);
+	return true;
 }
 
 /**
@@ -626,7 +630,7 @@ static struct desc_struct *get_desc(unsigned short sel)
  */
 unsigned long insn_get_seg_base(struct pt_regs *regs, int seg_reg_idx)
 {
-	struct desc_struct *desc;
+	struct desc_struct desc;
 	short sel;
 
 	sel = get_segment_selector(regs, seg_reg_idx);
@@ -664,11 +668,10 @@ unsigned long insn_get_seg_base(struct pt_regs *regs, int seg_reg_idx)
 	if (!sel)
 		return -1L;
 
-	desc = get_desc(sel);
-	if (!desc)
+	if (!get_desc(&desc, sel))
 		return -1L;
 
-	return get_desc_base(desc);
+	return get_desc_base(&desc);
 }
 
 /**
@@ -690,7 +693,7 @@ unsigned long insn_get_seg_base(struct pt_regs *regs, int seg_reg_idx)
  */
 static unsigned long get_seg_limit(struct pt_regs *regs, int seg_reg_idx)
 {
-	struct desc_struct *desc;
+	struct desc_struct desc;
 	unsigned long limit;
 	short sel;
 
@@ -704,8 +707,7 @@ static unsigned long get_seg_limit(struct pt_regs *regs, int seg_reg_idx)
 	if (!sel)
 		return 0;
 
-	desc = get_desc(sel);
-	if (!desc)
+	if (!get_desc(&desc, sel))
 		return 0;
 
 	/*
@@ -714,8 +716,8 @@ static unsigned long get_seg_limit(struct pt_regs *regs, int seg_reg_idx)
 	 * not tested when checking the segment limits. In practice,
 	 * this means that the segment ends in (limit << 12) + 0xfff.
 	 */
-	limit = get_desc_limit(desc);
-	if (desc->g)
+	limit = get_desc_limit(&desc);
+	if (desc.g)
 		limit = (limit << 12) + 0xfff;
 
 	return limit;
@@ -739,7 +741,7 @@ static unsigned long get_seg_limit(struct pt_regs *regs, int seg_reg_idx)
  */
 int insn_get_code_seg_params(struct pt_regs *regs)
 {
-	struct desc_struct *desc;
+	struct desc_struct desc;
 	short sel;
 
 	if (v8086_mode(regs))
@@ -750,8 +752,7 @@ int insn_get_code_seg_params(struct pt_regs *regs)
 	if (sel < 0)
 		return sel;
 
-	desc = get_desc(sel);
-	if (!desc)
+	if (!get_desc(&desc, sel))
 		return -EINVAL;
 
 	/*
@@ -759,10 +760,10 @@ int insn_get_code_seg_params(struct pt_regs *regs)
 	 * determines whether a segment contains data or code. If this is a data
 	 * segment, return error.
 	 */
-	if (!(desc->type & BIT(3)))
+	if (!(desc.type & BIT(3)))
 		return -EINVAL;
 
-	switch ((desc->l << 1) | desc->d) {
+	switch ((desc.l << 1) | desc.d) {
 	case 0: /*
 		 * Legacy mode. CS.L=0, CS.D=0. Address and operand size are
 		 * both 16-bit.
diff --git a/arch/x86/power/cpu.c b/arch/x86/power/cpu.c
index a7d966964c6f..513ce09e9950 100644
--- a/arch/x86/power/cpu.c
+++ b/arch/x86/power/cpu.c
@@ -299,7 +299,17 @@ int hibernate_resume_nonboot_cpu_disable(void)
 	 * address in its instruction pointer may not be possible to resolve
 	 * any more at that point (the page tables used by it previously may
 	 * have been overwritten by hibernate image data).
+	 *
+	 * First, make sure that we wake up all the potentially disabled SMT
+	 * threads which have been initially brought up and then put into
+	 * mwait/cpuidle sleep.
+	 * Those will be put to proper (not interfering with hibernation
+	 * resume) sleep afterwards, and the resumed kernel will decide itself
+	 * what to do with them.
 	 */
+	ret = cpuhp_smt_enable();
+	if (ret)
+		return ret;
 	smp_ops.play_dead = resume_play_dead;
 	ret = disable_nonboot_cpus();
 	smp_ops.play_dead = play_dead;
diff --git a/arch/x86/power/hibernate_64.c b/arch/x86/power/hibernate_64.c
index f8e3b668d20b..c9986041a5e1 100644
--- a/arch/x86/power/hibernate_64.c
+++ b/arch/x86/power/hibernate_64.c
@@ -13,6 +13,7 @@
 #include <linux/suspend.h>
 #include <linux/scatterlist.h>
 #include <linux/kdebug.h>
+#include <linux/cpu.h>
 
 #include <crypto/hash.h>
 
@@ -363,3 +364,35 @@ int arch_hibernation_header_restore(void *addr)
 
 	return 0;
 }
+
+int arch_resume_nosmt(void)
+{
+	int ret = 0;
+	/*
+	 * We reached this while coming out of hibernation. This means
+	 * that SMT siblings are sleeping in hlt, as mwait is not safe
+	 * against control transition during resume (see comment in
+	 * hibernate_resume_nonboot_cpu_disable()).
+	 *
+	 * If the resumed kernel has SMT disabled, we have to take all the
+	 * SMT siblings out of hlt, and offline them again so that they
+	 * end up in mwait proper.
+	 *
+	 * Called with hotplug disabled.
+	 */
+	cpu_hotplug_enable();
+	if (cpu_smt_control == CPU_SMT_DISABLED ||
+			cpu_smt_control == CPU_SMT_FORCE_DISABLED) {
+		enum cpuhp_smt_control old = cpu_smt_control;
+
+		ret = cpuhp_smt_enable();
+		if (ret)
+			goto out;
+		ret = cpuhp_smt_disable(old);
+		if (ret)
+			goto out;
+	}
+out:
+	cpu_hotplug_disable();
+	return ret;
+}
diff --git a/drivers/acpi/apei/erst.c b/drivers/acpi/apei/erst.c
index 3c5ea7cb693e..ab8faa6d6616 100644
--- a/drivers/acpi/apei/erst.c
+++ b/drivers/acpi/apei/erst.c
@@ -1176,7 +1176,6 @@ static int __init erst_init(void)
 	"Error Record Serialization Table (ERST) support is initialized.\n");
 
 	buf = kmalloc(erst_erange.size, GFP_KERNEL);
-	spin_lock_init(&erst_info.buf_lock);
 	if (buf) {
 		erst_info.buf = buf + sizeof(struct cper_pstore_record);
 		erst_info.bufsize = erst_erange.size -
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index 3e905da33bcb..5830d9417886 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -1310,11 +1310,11 @@ static void blkif_free_ring(struct blkfront_ring_info *rinfo)
 		}
 
 free_shadow:
-		kfree(rinfo->shadow[i].grants_used);
+		kvfree(rinfo->shadow[i].grants_used);
 		rinfo->shadow[i].grants_used = NULL;
-		kfree(rinfo->shadow[i].indirect_grants);
+		kvfree(rinfo->shadow[i].indirect_grants);
 		rinfo->shadow[i].indirect_grants = NULL;
-		kfree(rinfo->shadow[i].sg);
+		kvfree(rinfo->shadow[i].sg);
 		rinfo->shadow[i].sg = NULL;
 	}
 
@@ -1353,7 +1353,7 @@ static void blkif_free(struct blkfront_info *info, int suspend)
 	for (i = 0; i < info->nr_rings; i++)
 		blkif_free_ring(&info->rinfo[i]);
 
-	kfree(info->rinfo);
+	kvfree(info->rinfo);
 	info->rinfo = NULL;
 	info->nr_rings = 0;
 }
@@ -1914,9 +1914,9 @@ static int negotiate_mq(struct blkfront_info *info)
 	if (!info->nr_rings)
 		info->nr_rings = 1;
 
-	info->rinfo = kcalloc(info->nr_rings,
-			      sizeof(struct blkfront_ring_info),
-			      GFP_KERNEL);
+	info->rinfo = kvcalloc(info->nr_rings,
+			       sizeof(struct blkfront_ring_info),
+			       GFP_KERNEL);
 	if (!info->rinfo) {
 		xenbus_dev_fatal(info->xbdev, -ENOMEM, "allocating ring_info structure");
 		info->nr_rings = 0;
@@ -2232,17 +2232,17 @@ static int blkfront_setup_indirect(struct blkfront_ring_info *rinfo)
 
 	for (i = 0; i < BLK_RING_SIZE(info); i++) {
 		rinfo->shadow[i].grants_used =
-			kcalloc(grants,
-				sizeof(rinfo->shadow[i].grants_used[0]),
-				GFP_NOIO);
-		rinfo->shadow[i].sg = kcalloc(psegs,
-					      sizeof(rinfo->shadow[i].sg[0]),
-					      GFP_NOIO);
+			kvcalloc(grants,
+				 sizeof(rinfo->shadow[i].grants_used[0]),
+				 GFP_NOIO);
+		rinfo->shadow[i].sg = kvcalloc(psegs,
+					       sizeof(rinfo->shadow[i].sg[0]),
+					       GFP_NOIO);
 		if (info->max_indirect_segments)
 			rinfo->shadow[i].indirect_grants =
-				kcalloc(INDIRECT_GREFS(grants),
-					sizeof(rinfo->shadow[i].indirect_grants[0]),
-					GFP_NOIO);
+				kvcalloc(INDIRECT_GREFS(grants),
+					 sizeof(rinfo->shadow[i].indirect_grants[0]),
+					 GFP_NOIO);
 		if ((rinfo->shadow[i].grants_used == NULL) ||
 			(rinfo->shadow[i].sg == NULL) ||
 		     (info->max_indirect_segments &&
@@ -2256,11 +2256,11 @@ static int blkfront_setup_indirect(struct blkfront_ring_info *rinfo)
 
 out_of_memory:
 	for (i = 0; i < BLK_RING_SIZE(info); i++) {
-		kfree(rinfo->shadow[i].grants_used);
+		kvfree(rinfo->shadow[i].grants_used);
 		rinfo->shadow[i].grants_used = NULL;
-		kfree(rinfo->shadow[i].sg);
+		kvfree(rinfo->shadow[i].sg);
 		rinfo->shadow[i].sg = NULL;
-		kfree(rinfo->shadow[i].indirect_grants);
+		kvfree(rinfo->shadow[i].indirect_grants);
 		rinfo->shadow[i].indirect_grants = NULL;
 	}
 	if (!list_empty(&rinfo->indirect_pages)) {
diff --git a/drivers/firmware/efi/efi-pstore.c b/drivers/firmware/efi/efi-pstore.c
index cfe87b465819..0f7d97917197 100644
--- a/drivers/firmware/efi/efi-pstore.c
+++ b/drivers/firmware/efi/efi-pstore.c
@@ -259,8 +259,7 @@ static int efi_pstore_write(struct pstore_record *record)
 		efi_name[i] = name[i];
 
 	ret = efivar_entry_set_safe(efi_name, vendor, PSTORE_EFI_ATTRIBUTES,
-			      !pstore_cannot_block_path(record->reason),
-			      record->size, record->psi->buf);
+			      preemptible(), record->size, record->psi->buf);
 
 	if (record->reason == KMSG_DUMP_OOPS)
 		efivar_run_worker();
@@ -369,7 +368,6 @@ static __init int efivars_pstore_init(void)
 		return -ENOMEM;
 
 	efi_pstore_info.bufsize = 1024;
-	spin_lock_init(&efi_pstore_info.buf_lock);
 
 	if (pstore_register(&efi_pstore_info)) {
 		kfree(efi_pstore_info.buf);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
index f008804f0b97..bbd927e800af 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
@@ -416,8 +416,7 @@ static int amdgpu_atif_handler(struct amdgpu_device *adev,
 			}
 		}
 		if (req.pending & ATIF_DGPU_DISPLAY_EVENT) {
-			if ((adev->flags & AMD_IS_PX) &&
-			    amdgpu_atpx_dgpu_req_power_for_displays()) {
+			if (adev->flags & AMD_IS_PX) {
 				pm_runtime_get_sync(adev->ddev->dev);
 				/* Just fire off a uevent and let userspace tell us what to do */
 				drm_helper_hpd_irq_event(adev->ddev);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
index 5b39d1399630..5be82e4fd1da 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
@@ -37,18 +37,10 @@ static void psp_set_funcs(struct amdgpu_device *adev);
 static int psp_early_init(void *handle)
 {
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+	struct psp_context *psp = &adev->psp;
 
 	psp_set_funcs(adev);
 
-	return 0;
-}
-
-static int psp_sw_init(void *handle)
-{
-	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
-	struct psp_context *psp = &adev->psp;
-	int ret;
-
 	switch (adev->asic_type) {
 	case CHIP_VEGA10:
 	case CHIP_VEGA12:
@@ -67,6 +59,15 @@ static int psp_sw_init(void *handle)
 	if (adev->firmware.load_type != AMDGPU_FW_LOAD_PSP)
 		return 0;
 
+	return 0;
+}
+
+static int psp_sw_init(void *handle)
+{
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+	struct psp_context *psp = &adev->psp;
+	int ret;
+
 	ret = psp_init_microcode(psp);
 	if (ret) {
 		DRM_ERROR("Failed to load psp firmware!\n");
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
index 94f5c3646cb7..c22062cc9992 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -1573,15 +1573,6 @@ int drm_atomic_helper_async_check(struct drm_device *dev,
 	if (old_plane_state->fb != new_plane_state->fb)
 		return -EINVAL;
 
-	/*
-	 * FIXME: Since prepare_fb and cleanup_fb are always called on
-	 * the new_plane_state for async updates we need to block framebuffer
-	 * changes. This prevents use of a fb that's been cleaned up and
-	 * double cleanups from occuring.
-	 */
-	if (old_plane_state->fb != new_plane_state->fb)
-		return -EINVAL;
-
 	funcs = plane->helper_private;
 	if (!funcs->atomic_async_update)
 		return -EINVAL;
@@ -1612,6 +1603,8 @@ EXPORT_SYMBOL(drm_atomic_helper_async_check);
  * drm_atomic_async_check() succeeds. Async commits are not supposed to swap
  * the states like normal sync commits, but just do in-place changes on the
  * current state.
+ *
+ * TODO: Implement full swap instead of doing in-place changes.
  */
 void drm_atomic_helper_async_commit(struct drm_device *dev,
 				    struct drm_atomic_state *state)
@@ -1622,6 +1615,9 @@ void drm_atomic_helper_async_commit(struct drm_device *dev,
 	int i;
 
 	for_each_new_plane_in_state(state, plane, plane_state, i) {
+		struct drm_framebuffer *new_fb = plane_state->fb;
+		struct drm_framebuffer *old_fb = plane->state->fb;
+
 		funcs = plane->helper_private;
 		funcs->atomic_async_update(plane, plane_state);
 
@@ -1630,11 +1626,17 @@ void drm_atomic_helper_async_commit(struct drm_device *dev,
 		 * plane->state in-place, make sure at least common
 		 * properties have been properly updated.
 		 */
-		WARN_ON_ONCE(plane->state->fb != plane_state->fb);
+		WARN_ON_ONCE(plane->state->fb != new_fb);
 		WARN_ON_ONCE(plane->state->crtc_x != plane_state->crtc_x);
 		WARN_ON_ONCE(plane->state->crtc_y != plane_state->crtc_y);
 		WARN_ON_ONCE(plane->state->src_x != plane_state->src_x);
 		WARN_ON_ONCE(plane->state->src_y != plane_state->src_y);
+
+		/*
+		 * Make sure the FBs have been swapped so that cleanups in the
+		 * new_state performs a cleanup in the old FB.
+		 */
+		WARN_ON_ONCE(plane_state->fb != old_fb);
 	}
 }
 EXPORT_SYMBOL(drm_atomic_helper_async_commit);
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index b506e3622b08..7c581f4c2b94 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -172,6 +172,25 @@ static const struct edid_quirk {
 	/* Rotel RSX-1058 forwards sink's EDID but only does HDMI 1.1*/
 	{ "ETR", 13896, EDID_QUIRK_FORCE_8BPC },
 
+	/* Valve Index Headset */
+	{ "VLV", 0x91a8, EDID_QUIRK_NON_DESKTOP },
+	{ "VLV", 0x91b0, EDID_QUIRK_NON_DESKTOP },
+	{ "VLV", 0x91b1, EDID_QUIRK_NON_DESKTOP },
+	{ "VLV", 0x91b2, EDID_QUIRK_NON_DESKTOP },
+	{ "VLV", 0x91b3, EDID_QUIRK_NON_DESKTOP },
+	{ "VLV", 0x91b4, EDID_QUIRK_NON_DESKTOP },
+	{ "VLV", 0x91b5, EDID_QUIRK_NON_DESKTOP },
+	{ "VLV", 0x91b6, EDID_QUIRK_NON_DESKTOP },
+	{ "VLV", 0x91b7, EDID_QUIRK_NON_DESKTOP },
+	{ "VLV", 0x91b8, EDID_QUIRK_NON_DESKTOP },
+	{ "VLV", 0x91b9, EDID_QUIRK_NON_DESKTOP },
+	{ "VLV", 0x91ba, EDID_QUIRK_NON_DESKTOP },
+	{ "VLV", 0x91bb, EDID_QUIRK_NON_DESKTOP },
+	{ "VLV", 0x91bc, EDID_QUIRK_NON_DESKTOP },
+	{ "VLV", 0x91bd, EDID_QUIRK_NON_DESKTOP },
+	{ "VLV", 0x91be, EDID_QUIRK_NON_DESKTOP },
+	{ "VLV", 0x91bf, EDID_QUIRK_NON_DESKTOP },
+
 	/* HTC Vive and Vive Pro VR Headsets */
 	{ "HVR", 0xaa01, EDID_QUIRK_NON_DESKTOP },
 	{ "HVR", 0xaa02, EDID_QUIRK_NON_DESKTOP },
@@ -193,6 +212,12 @@ static const struct edid_quirk {
 
 	/* Sony PlayStation VR Headset */
 	{ "SNY", 0x0704, EDID_QUIRK_NON_DESKTOP },
+
+	/* Sensics VR Headsets */
+	{ "SEN", 0x1019, EDID_QUIRK_NON_DESKTOP },
+
+	/* OSVR HDK and HDK2 VR Headsets */
+	{ "SVR", 0x1019, EDID_QUIRK_NON_DESKTOP },
 };
 
 /*
diff --git a/drivers/gpu/drm/gma500/cdv_intel_lvds.c b/drivers/gpu/drm/gma500/cdv_intel_lvds.c
index de9531caaca0..9c8446184b17 100644
--- a/drivers/gpu/drm/gma500/cdv_intel_lvds.c
+++ b/drivers/gpu/drm/gma500/cdv_intel_lvds.c
@@ -594,6 +594,9 @@ void cdv_intel_lvds_init(struct drm_device *dev,
 	int pipe;
 	u8 pin;
 
+	if (!dev_priv->lvds_enabled_in_vbt)
+		return;
+
 	pin = GMBUS_PORT_PANEL;
 	if (!lvds_is_present_in_vbt(dev, &pin)) {
 		DRM_DEBUG_KMS("LVDS is not present in VBT\n");
diff --git a/drivers/gpu/drm/gma500/intel_bios.c b/drivers/gpu/drm/gma500/intel_bios.c
index 63bde4e86c6a..e019ea271ffc 100644
--- a/drivers/gpu/drm/gma500/intel_bios.c
+++ b/drivers/gpu/drm/gma500/intel_bios.c
@@ -436,6 +436,9 @@ parse_driver_features(struct drm_psb_private *dev_priv,
 	if (driver->lvds_config == BDB_DRIVER_FEATURE_EDP)
 		dev_priv->edp.support = 1;
 
+	dev_priv->lvds_enabled_in_vbt = driver->lvds_config != 0;
+	DRM_DEBUG_KMS("LVDS VBT config bits: 0x%x\n", driver->lvds_config);
+
 	/* This bit means to use 96Mhz for DPLL_A or not */
 	if (driver->primary_lfp_id)
 		dev_priv->dplla_96mhz = true;
diff --git a/drivers/gpu/drm/gma500/psb_drv.h b/drivers/gpu/drm/gma500/psb_drv.h
index 93d2f4000d2f..be3cf9b348bd 100644
--- a/drivers/gpu/drm/gma500/psb_drv.h
+++ b/drivers/gpu/drm/gma500/psb_drv.h
@@ -538,6 +538,7 @@ struct drm_psb_private {
 	int lvds_ssc_freq;
 	bool is_lvds_on;
 	bool is_mipi_on;
+	bool lvds_enabled_in_vbt;
 	u32 mipi_ctrl_display;
 
 	unsigned int core_freq;
diff --git a/drivers/gpu/drm/i915/gvt/gtt.c b/drivers/gpu/drm/i915/gvt/gtt.c
index 542f31ce108f..40b32b4d1d98 100644
--- a/drivers/gpu/drm/i915/gvt/gtt.c
+++ b/drivers/gpu/drm/i915/gvt/gtt.c
@@ -2161,7 +2161,8 @@ static int emulate_ggtt_mmio_write(struct intel_vgpu *vgpu, unsigned int off,
 	struct intel_gvt_gtt_pte_ops *ops = gvt->gtt.pte_ops;
 	unsigned long g_gtt_index = off >> info->gtt_entry_size_shift;
 	unsigned long gma, gfn;
-	struct intel_gvt_gtt_entry e, m;
+	struct intel_gvt_gtt_entry e = {.val64 = 0, .type = GTT_TYPE_GGTT_PTE};
+	struct intel_gvt_gtt_entry m = {.val64 = 0, .type = GTT_TYPE_GGTT_PTE};
 	dma_addr_t dma_addr;
 	int ret;
 
@@ -2237,7 +2238,8 @@ static int emulate_ggtt_mmio_write(struct intel_vgpu *vgpu, unsigned int off,
 
 	if (ops->test_present(&e)) {
 		gfn = ops->get_pfn(&e);
-		m = e;
+		m.val64 = e.val64;
+		m.type = e.type;
 
 		/* one PTE update may be issued in multiple writes and the
 		 * first write may not construct a valid gfn
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 5b544cb38148..16f5d2d93801 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -32,7 +32,7 @@
  * macros. Do **not** mass change existing definitions just to update the style.
  *
  * Layout
- * ''''''
+ * ~~~~~~
  *
  * Keep helper macros near the top. For example, _PIPE() and friends.
  *
@@ -78,7 +78,7 @@
  * style. Use lower case in hexadecimal values.
  *
  * Naming
- * ''''''
+ * ~~~~~~
  *
  * Try to name registers according to the specs. If the register name changes in
  * the specs from platform to another, stick to the original name.
@@ -96,7 +96,7 @@
  * suffix to the name. For example, ``_SKL`` or ``_GEN8``.
  *
  * Examples
- * ''''''''
+ * ~~~~~~~~
  *
  * (Note that the values in the example are indented using spaces instead of
  * TABs to avoid misalignment in generated documentation. Use TABs in the
diff --git a/drivers/gpu/drm/i915/intel_fbc.c b/drivers/gpu/drm/i915/intel_fbc.c
index 01d1d2088f04..728a20e1f638 100644
--- a/drivers/gpu/drm/i915/intel_fbc.c
+++ b/drivers/gpu/drm/i915/intel_fbc.c
@@ -1267,6 +1267,10 @@ static int intel_sanitize_fbc_option(struct drm_i915_private *dev_priv)
 	if (!HAS_FBC(dev_priv))
 		return 0;
 
+	/* https://bugs.freedesktop.org/show_bug.cgi?id=108085 */
+	if (IS_GEMINILAKE(dev_priv))
+		return 0;
+
 	if (IS_BROADWELL(dev_priv) || INTEL_GEN(dev_priv) >= 9)
 		return 1;
 
diff --git a/drivers/gpu/drm/i915/intel_workarounds.c b/drivers/gpu/drm/i915/intel_workarounds.c
index 4bcdeaf8d98f..c44bb37e434c 100644
--- a/drivers/gpu/drm/i915/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/intel_workarounds.c
@@ -37,7 +37,7 @@
  *    costly and simplifies things. We can revisit this in the future.
  *
  * Layout
- * ''''''
+ * ~~~~~~
  *
  * Keep things in this file ordered by WA type, as per the above (context, GT,
  * display, register whitelist, batchbuffer). Then, inside each type, keep the
diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c b/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c
index 273cbbe27c2e..1ddf07514de6 100644
--- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c
+++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c
@@ -503,6 +503,8 @@ static int mdp5_plane_atomic_async_check(struct drm_plane *plane,
 static void mdp5_plane_atomic_async_update(struct drm_plane *plane,
 					   struct drm_plane_state *new_state)
 {
+	struct drm_framebuffer *old_fb = plane->state->fb;
+
 	plane->state->src_x = new_state->src_x;
 	plane->state->src_y = new_state->src_y;
 	plane->state->crtc_x = new_state->crtc_x;
@@ -525,6 +527,8 @@ static void mdp5_plane_atomic_async_update(struct drm_plane *plane,
 
 	*to_mdp5_plane_state(plane->state) =
 		*to_mdp5_plane_state(new_state);
+
+	new_state->fb = old_fb;
 }
 
 static const struct drm_plane_helper_funcs mdp5_plane_helper_funcs = {
diff --git a/drivers/gpu/drm/nouveau/Kconfig b/drivers/gpu/drm/nouveau/Kconfig
index 4b75ad40dd80..00d9d77f583a 100644
--- a/drivers/gpu/drm/nouveau/Kconfig
+++ b/drivers/gpu/drm/nouveau/Kconfig
@@ -16,10 +16,21 @@ config DRM_NOUVEAU
 	select INPUT if ACPI && X86
 	select THERMAL if ACPI && X86
 	select ACPI_VIDEO if ACPI && X86
-	select DRM_VM
 	help
 	  Choose this option for open-source NVIDIA support.
 
+config NOUVEAU_LEGACY_CTX_SUPPORT
+	bool "Nouveau legacy context support"
+	depends on DRM_NOUVEAU
+	select DRM_VM
+	default y
+	help
+	  There was a version of the nouveau DDX that relied on legacy
+	  ctx ioctls not erroring out. But that was back in time a long
+	  ways, so offer a way to disable it now. For uapi compat with
+	  old nouveau ddx this should be on by default, but modern distros
+	  should consider turning it off.
+
 config NOUVEAU_PLATFORM_DRIVER
 	bool "Nouveau (NVIDIA) SoC GPUs"
 	depends on DRM_NOUVEAU && ARCH_TEGRA
diff --git a/drivers/gpu/drm/nouveau/nouveau_drm.c b/drivers/gpu/drm/nouveau/nouveau_drm.c
index 74d2283f2c28..2b7a54cc3c9e 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_drm.c
@@ -1015,8 +1015,11 @@ nouveau_driver_fops = {
 static struct drm_driver
 driver_stub = {
 	.driver_features =
-		DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME | DRIVER_RENDER |
-		DRIVER_KMS_LEGACY_CONTEXT,
+		DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME | DRIVER_RENDER
+#if defined(CONFIG_NOUVEAU_LEGACY_CTX_SUPPORT)
+		| DRIVER_KMS_LEGACY_CONTEXT
+#endif
+		,
 
 	.load = nouveau_drm_load,
 	.unload = nouveau_drm_unload,
diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
index 9d3ac8b981da..d8e2d7b3b836 100644
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -921,12 +921,12 @@ static void avivo_get_fb_ref_div(unsigned nom, unsigned den, unsigned post_div,
 	ref_div_max = max(min(100 / post_div, ref_div_max), 1u);
 
 	/* get matching reference and feedback divider */
-	*ref_div = min(max(DIV_ROUND_CLOSEST(den, post_div), 1u), ref_div_max);
+	*ref_div = min(max(den/post_div, 1u), ref_div_max);
 	*fb_div = DIV_ROUND_CLOSEST(nom * *ref_div * post_div, den);
 
 	/* limit fb divider to its maximum */
 	if (*fb_div > fb_div_max) {
-		*ref_div = DIV_ROUND_CLOSEST(*ref_div * fb_div_max, *fb_div);
+		*ref_div = (*ref_div * fb_div_max)/(*fb_div);
 		*fb_div = fb_div_max;
 	}
 }
diff --git a/drivers/i2c/busses/i2c-xiic.c b/drivers/i2c/busses/i2c-xiic.c
index 0c51c0ffdda9..8d6b6eeef71c 100644
--- a/drivers/i2c/busses/i2c-xiic.c
+++ b/drivers/i2c/busses/i2c-xiic.c
@@ -718,11 +718,16 @@ static const struct i2c_algorithm xiic_algorithm = {
 	.functionality = xiic_func,
 };
 
+static const struct i2c_adapter_quirks xiic_quirks = {
+	.max_read_len = 255,
+};
+
 static const struct i2c_adapter xiic_adapter = {
 	.owner = THIS_MODULE,
 	.name = DRIVER_NAME,
 	.class = I2C_CLASS_DEPRECATED,
 	.algo = &xiic_algorithm,
+	.quirks = &xiic_quirks,
 };
 
 
diff --git a/drivers/irqchip/irq-ath79-misc.c b/drivers/irqchip/irq-ath79-misc.c
index 0390603170b4..aa7290784636 100644
--- a/drivers/irqchip/irq-ath79-misc.c
+++ b/drivers/irqchip/irq-ath79-misc.c
@@ -22,15 +22,6 @@
 #define AR71XX_RESET_REG_MISC_INT_ENABLE	4
 
 #define ATH79_MISC_IRQ_COUNT			32
-#define ATH79_MISC_PERF_IRQ			5
-
-static int ath79_perfcount_irq;
-
-int get_c0_perfcount_int(void)
-{
-	return ath79_perfcount_irq;
-}
-EXPORT_SYMBOL_GPL(get_c0_perfcount_int);
 
 static void ath79_misc_irq_handler(struct irq_desc *desc)
 {
@@ -122,8 +113,6 @@ static void __init ath79_misc_intc_domain_init(
 {
 	void __iomem *base = domain->host_data;
 
-	ath79_perfcount_irq = irq_create_mapping(domain, ATH79_MISC_PERF_IRQ);
-
 	/* Disable and clear all interrupts */
 	__raw_writel(0, base + AR71XX_RESET_REG_MISC_INT_ENABLE);
 	__raw_writel(0, base + AR71XX_RESET_REG_MISC_INT_STATUS);
diff --git a/drivers/misc/genwqe/card_dev.c b/drivers/misc/genwqe/card_dev.c
index 8c1b63a4337b..d2098b4d2945 100644
--- a/drivers/misc/genwqe/card_dev.c
+++ b/drivers/misc/genwqe/card_dev.c
@@ -780,6 +780,8 @@ static int genwqe_pin_mem(struct genwqe_file *cfile, struct genwqe_mem *m)
 
 	if ((m->addr == 0x0) || (m->size == 0))
 		return -EINVAL;
+	if (m->size > ULONG_MAX - PAGE_SIZE - (m->addr & ~PAGE_MASK))
+		return -EINVAL;
 
 	map_addr = (m->addr & PAGE_MASK);
 	map_size = round_up(m->size + (m->addr & ~PAGE_MASK), PAGE_SIZE);
diff --git a/drivers/misc/genwqe/card_utils.c b/drivers/misc/genwqe/card_utils.c
index f4f8ab602442..f68435df76d4 100644
--- a/drivers/misc/genwqe/card_utils.c
+++ b/drivers/misc/genwqe/card_utils.c
@@ -587,6 +587,10 @@ int genwqe_user_vmap(struct genwqe_dev *cd, struct dma_mapping *m, void *uaddr,
 	/* determine space needed for page_list. */
 	data = (unsigned long)uaddr;
 	offs = offset_in_page(data);
+	if (size > ULONG_MAX - PAGE_SIZE - offs) {
+		m->size = 0;	/* mark unused and not added */
+		return -EINVAL;
+	}
 	m->nr_pages = DIV_ROUND_UP(offs + size, PAGE_SIZE);
 
 	m->page_list = kcalloc(m->nr_pages,
diff --git a/drivers/mtd/nand/spi/macronix.c b/drivers/mtd/nand/spi/macronix.c
index 98f6b9c4b684..d16b57081c95 100644
--- a/drivers/mtd/nand/spi/macronix.c
+++ b/drivers/mtd/nand/spi/macronix.c
@@ -10,6 +10,7 @@
 #include <linux/mtd/spinand.h>
 
 #define SPINAND_MFR_MACRONIX		0xC2
+#define MACRONIX_ECCSR_MASK		0x0F
 
 static SPINAND_OP_VARIANTS(read_cache_variants,
 		SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0),
@@ -55,7 +56,12 @@ static int mx35lf1ge4ab_get_eccsr(struct spinand_device *spinand, u8 *eccsr)
 					  SPI_MEM_OP_DUMMY(1, 1),
 					  SPI_MEM_OP_DATA_IN(1, eccsr, 1));
 
-	return spi_mem_exec_op(spinand->spimem, &op);
+	int ret = spi_mem_exec_op(spinand->spimem, &op);
+	if (ret)
+		return ret;
+
+	*eccsr &= MACRONIX_ECCSR_MASK;
+	return 0;
 }
 
 static int mx35lf1ge4ab_ecc_get_status(struct spinand_device *spinand,
diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
index 59212d3d9587..df5b74f289e1 100644
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
@@ -1310,8 +1310,8 @@ static void mvpp2_ethtool_get_strings(struct net_device *netdev, u32 sset,
 		int i;
 
 		for (i = 0; i < ARRAY_SIZE(mvpp2_ethtool_regs); i++)
-			memcpy(data + i * ETH_GSTRING_LEN,
-			       &mvpp2_ethtool_regs[i].string, ETH_GSTRING_LEN);
+			strscpy(data + i * ETH_GSTRING_LEN,
+			        mvpp2_ethtool_regs[i].string, ETH_GSTRING_LEN);
 	}
 }
 
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
index d290f0787dfb..94c59939a8cf 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
@@ -2010,6 +2010,8 @@ static int mlx4_en_set_tunable(struct net_device *dev,
 	return ret;
 }
 
+#define MLX4_EEPROM_PAGE_LEN 256
+
 static int mlx4_en_get_module_info(struct net_device *dev,
 				   struct ethtool_modinfo *modinfo)
 {
@@ -2044,7 +2046,7 @@ static int mlx4_en_get_module_info(struct net_device *dev,
 		break;
 	case MLX4_MODULE_ID_SFP:
 		modinfo->type = ETH_MODULE_SFF_8472;
-		modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
+		modinfo->eeprom_len = MLX4_EEPROM_PAGE_LEN;
 		break;
 	default:
 		return -EINVAL;
diff --git a/drivers/net/ethernet/mellanox/mlx4/port.c b/drivers/net/ethernet/mellanox/mlx4/port.c
index 10fcc22f4590..ba6ac31a339d 100644
--- a/drivers/net/ethernet/mellanox/mlx4/port.c
+++ b/drivers/net/ethernet/mellanox/mlx4/port.c
@@ -2077,11 +2077,6 @@ int mlx4_get_module_info(struct mlx4_dev *dev, u8 port,
 		size -= offset + size - I2C_PAGE_SIZE;
 
 	i2c_addr = I2C_ADDR_LOW;
-	if (offset >= I2C_PAGE_SIZE) {
-		/* Reset offset to high page */
-		i2c_addr = I2C_ADDR_HIGH;
-		offset -= I2C_PAGE_SIZE;
-	}
 
 	cable_info = (struct mlx4_cable_info *)inmad->data;
 	cable_info->dev_mem_address = cpu_to_be16(offset);
diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
index 832bce07c385..1afed85550c0 100644
--- a/drivers/net/ethernet/ti/cpsw.c
+++ b/drivers/net/ethernet/ti/cpsw.c
@@ -2978,7 +2978,7 @@ static void cpsw_get_ringparam(struct net_device *ndev,
 	struct cpsw_common *cpsw = priv->cpsw;
 
 	/* not supported */
-	ering->tx_max_pending = 0;
+	ering->tx_max_pending = descs_pool_size - CPSW_MAX_QUEUES;
 	ering->tx_pending = cpdma_get_num_tx_descs(cpsw->dma);
 	ering->rx_max_pending = descs_pool_size - CPSW_MAX_QUEUES;
 	ering->rx_pending = cpdma_get_num_rx_descs(cpsw->dma);
diff --git a/drivers/net/phy/sfp.c b/drivers/net/phy/sfp.c
index 68c8fbf099f8..8807a806cc47 100644
--- a/drivers/net/phy/sfp.c
+++ b/drivers/net/phy/sfp.c
@@ -280,6 +280,7 @@ static int sfp_i2c_read(struct sfp *sfp, bool a2, u8 dev_addr, void *buf,
 {
 	struct i2c_msg msgs[2];
 	u8 bus_addr = a2 ? 0x51 : 0x50;
+	size_t this_len;
 	int ret;
 
 	msgs[0].addr = bus_addr;
@@ -291,11 +292,26 @@ static int sfp_i2c_read(struct sfp *sfp, bool a2, u8 dev_addr, void *buf,
 	msgs[1].len = len;
 	msgs[1].buf = buf;
 
-	ret = i2c_transfer(sfp->i2c, msgs, ARRAY_SIZE(msgs));
-	if (ret < 0)
-		return ret;
+	while (len) {
+		this_len = len;
+		if (this_len > 16)
+			this_len = 16;
 
-	return ret == ARRAY_SIZE(msgs) ? len : 0;
+		msgs[1].len = this_len;
+
+		ret = i2c_transfer(sfp->i2c, msgs, ARRAY_SIZE(msgs));
+		if (ret < 0)
+			return ret;
+
+		if (ret != ARRAY_SIZE(msgs))
+			break;
+
+		msgs[1].buf += this_len;
+		dev_addr += this_len;
+		len -= this_len;
+	}
+
+	return msgs[1].buf - (u8 *)buf;
 }
 
 static int sfp_i2c_write(struct sfp *sfp, bool a2, u8 dev_addr, void *buf,
diff --git a/drivers/parisc/ccio-dma.c b/drivers/parisc/ccio-dma.c
index 614823617b8b..b7b2e811d547 100644
--- a/drivers/parisc/ccio-dma.c
+++ b/drivers/parisc/ccio-dma.c
@@ -565,8 +565,6 @@ ccio_io_pdir_entry(u64 *pdir_ptr, space_t sid, unsigned long vba,
 	/* We currently only support kernel addresses */
 	BUG_ON(sid != KERNEL_SPACE);
 
-	mtsp(sid,1);
-
 	/*
 	** WORD 1 - low order word
 	** "hints" parm includes the VALID bit!
@@ -597,7 +595,7 @@ ccio_io_pdir_entry(u64 *pdir_ptr, space_t sid, unsigned long vba,
 	** Grab virtual index [0:11]
 	** Deposit virt_idx bits into I/O PDIR word
 	*/
-	asm volatile ("lci %%r0(%%sr1, %1), %0" : "=r" (ci) : "r" (vba));
+	asm volatile ("lci %%r0(%1), %0" : "=r" (ci) : "r" (vba));
 	asm volatile ("extru %1,19,12,%0" : "+r" (ci) : "r" (ci));
 	asm volatile ("depw  %1,15,12,%0" : "+r" (pa) : "r" (ci));
 
diff --git a/drivers/parisc/sba_iommu.c b/drivers/parisc/sba_iommu.c
index 11de0eccf968..6dd1780a5885 100644
--- a/drivers/parisc/sba_iommu.c
+++ b/drivers/parisc/sba_iommu.c
@@ -575,8 +575,7 @@ sba_io_pdir_entry(u64 *pdir_ptr, space_t sid, unsigned long vba,
 	pa = virt_to_phys(vba);
 	pa &= IOVP_MASK;
 
-	mtsp(sid,1);
-	asm("lci 0(%%sr1, %1), %0" : "=r" (ci) : "r" (vba));
+	asm("lci 0(%1), %0" : "=r" (ci) : "r" (vba));
 	pa |= (ci >> PAGE_SHIFT) & 0xff;  /* move CI (8 bits) into lowest byte */
 
 	pa |= SBA_PDIR_VALID_BIT;	/* set "valid" bit */
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index f0b354b65a0e..8dbeb14a1e3a 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -130,9 +130,6 @@ static void uart_start(struct tty_struct *tty)
 	struct uart_port *port;
 	unsigned long flags;
 
-	if (!state)
-		return;
-
 	port = uart_port_lock(state, flags);
 	__uart_start(tty);
 	uart_port_unlock(port, flags);
@@ -730,9 +727,6 @@ static void uart_unthrottle(struct tty_struct *tty)
 	upstat_t mask = UPSTAT_SYNC_FIFO;
 	struct uart_port *port;
 
-	if (!state)
-		return;
-
 	port = uart_port_ref(state);
 	if (!port)
 		return;
@@ -1708,6 +1702,16 @@ static void uart_dtr_rts(struct tty_port *port, int raise)
 	uart_port_deref(uport);
 }
 
+static int uart_install(struct tty_driver *driver, struct tty_struct *tty)
+{
+	struct uart_driver *drv = driver->driver_state;
+	struct uart_state *state = drv->state + tty->index;
+
+	tty->driver_data = state;
+
+	return tty_standard_install(driver, tty);
+}
+
 /*
  * Calls to uart_open are serialised by the tty_lock in
  *   drivers/tty/tty_io.c:tty_open()
@@ -1720,11 +1724,8 @@ static void uart_dtr_rts(struct tty_port *port, int raise)
  */
 static int uart_open(struct tty_struct *tty, struct file *filp)
 {
-	struct uart_driver *drv = tty->driver->driver_state;
-	int retval, line = tty->index;
-	struct uart_state *state = drv->state + line;
-
-	tty->driver_data = state;
+	struct uart_state *state = tty->driver_data;
+	int retval;
 
 	retval = tty_port_open(&state->port, tty, filp);
 	if (retval > 0)
@@ -2409,6 +2410,7 @@ static void uart_poll_put_char(struct tty_driver *driver, int line, char ch)
 #endif
 
 static const struct tty_operations uart_ops = {
+	.install	= uart_install,
 	.open		= uart_open,
 	.close		= uart_close,
 	.write		= uart_write,
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index 59e8bb72dc14..9a22aa580fe7 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -2981,7 +2981,7 @@ static long fuse_file_fallocate(struct file *file, int mode, loff_t offset,
 	    offset + length > i_size_read(inode)) {
 		err = inode_newsize_ok(inode, offset + length);
 		if (err)
-			return err;
+			goto out;
 	}
 
 	if (!(mode & FALLOC_FL_KEEP_SIZE))
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 580e37bc3fe2..53cf8599a46e 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -6850,7 +6850,6 @@ struct nfs4_lock_waiter {
 	struct task_struct	*task;
 	struct inode		*inode;
 	struct nfs_lowner	*owner;
-	bool			notified;
 };
 
 static int
@@ -6872,13 +6871,13 @@ nfs4_wake_lock_waiter(wait_queue_entry_t *wait, unsigned int mode, int flags, vo
 		/* Make sure it's for the right inode */
 		if (nfs_compare_fh(NFS_FH(waiter->inode), &cbnl->cbnl_fh))
 			return 0;
-
-		waiter->notified = true;
 	}
 
 	/* override "private" so we can use default_wake_function */
 	wait->private = waiter->task;
-	ret = autoremove_wake_function(wait, mode, flags, key);
+	ret = woken_wake_function(wait, mode, flags, key);
+	if (ret)
+		list_del_init(&wait->entry);
 	wait->private = waiter;
 	return ret;
 }
@@ -6887,7 +6886,6 @@ static int
 nfs4_retry_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
 {
 	int status = -ERESTARTSYS;
-	unsigned long flags;
 	struct nfs4_lock_state *lsp = request->fl_u.nfs4_fl.owner;
 	struct nfs_server *server = NFS_SERVER(state->inode);
 	struct nfs_client *clp = server->nfs_client;
@@ -6897,8 +6895,7 @@ nfs4_retry_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
 				    .s_dev = server->s_dev };
 	struct nfs4_lock_waiter waiter = { .task  = current,
 					   .inode = state->inode,
-					   .owner = &owner,
-					   .notified = false };
+					   .owner = &owner};
 	wait_queue_entry_t wait;
 
 	/* Don't bother with waitqueue if we don't expect a callback */
@@ -6908,27 +6905,22 @@ nfs4_retry_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
 	init_wait(&wait);
 	wait.private = &waiter;
 	wait.func = nfs4_wake_lock_waiter;
-	add_wait_queue(q, &wait);
 
 	while(!signalled()) {
-		waiter.notified = false;
+		add_wait_queue(q, &wait);
 		status = nfs4_proc_setlk(state, cmd, request);
-		if ((status != -EAGAIN) || IS_SETLK(cmd))
+		if ((status != -EAGAIN) || IS_SETLK(cmd)) {
+			finish_wait(q, &wait);
 			break;
-
-		status = -ERESTARTSYS;
-		spin_lock_irqsave(&q->lock, flags);
-		if (waiter.notified) {
-			spin_unlock_irqrestore(&q->lock, flags);
-			continue;
 		}
-		set_current_state(TASK_INTERRUPTIBLE);
-		spin_unlock_irqrestore(&q->lock, flags);
 
-		freezable_schedule_timeout(NFS4_LOCK_MAXTIMEOUT);
+		status = -ERESTARTSYS;
+		freezer_do_not_count();
+		wait_woken(&wait, TASK_INTERRUPTIBLE, NFS4_LOCK_MAXTIMEOUT);
+		freezer_count();
+		finish_wait(q, &wait);
 	}
 
-	finish_wait(q, &wait);
 	return status;
 }
 #else /* !CONFIG_NFS_V4_1 */
diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c
index b821054ca3ed..4bae3f4fe829 100644
--- a/fs/pstore/platform.c
+++ b/fs/pstore/platform.c
@@ -124,26 +124,27 @@ static const char *get_reason_str(enum kmsg_dump_reason reason)
 	}
 }
 
-bool pstore_cannot_block_path(enum kmsg_dump_reason reason)
+/*
+ * Should pstore_dump() wait for a concurrent pstore_dump()? If
+ * not, the current pstore_dump() will report a failure to dump
+ * and return.
+ */
+static bool pstore_cannot_wait(enum kmsg_dump_reason reason)
 {
-	/*
-	 * In case of NMI path, pstore shouldn't be blocked
-	 * regardless of reason.
-	 */
+	/* In NMI path, pstore shouldn't block regardless of reason. */
 	if (in_nmi())
 		return true;
 
 	switch (reason) {
 	/* In panic case, other cpus are stopped by smp_send_stop(). */
 	case KMSG_DUMP_PANIC:
-	/* Emergency restart shouldn't be blocked by spin lock. */
+	/* Emergency restart shouldn't be blocked. */
 	case KMSG_DUMP_EMERG:
 		return true;
 	default:
 		return false;
 	}
 }
-EXPORT_SYMBOL_GPL(pstore_cannot_block_path);
 
 #if IS_ENABLED(CONFIG_PSTORE_DEFLATE_COMPRESS)
 static int zbufsize_deflate(size_t size)
@@ -323,8 +324,10 @@ static void allocate_buf_for_compression(void)
 
 static void free_buf_for_compression(void)
 {
-	if (IS_ENABLED(CONFIG_PSTORE_COMPRESS) && tfm)
+	if (IS_ENABLED(CONFIG_PSTORE_COMPRESS) && tfm) {
 		crypto_free_comp(tfm);
+		tfm = NULL;
+	}
 	kfree(big_oops_buf);
 	big_oops_buf = NULL;
 	big_oops_buf_sz = 0;
@@ -378,23 +381,23 @@ static void pstore_dump(struct kmsg_dumper *dumper,
 	unsigned long	total = 0;
 	const char	*why;
 	unsigned int	part = 1;
-	unsigned long	flags = 0;
-	int		is_locked;
 	int		ret;
 
 	why = get_reason_str(reason);
 
-	if (pstore_cannot_block_path(reason)) {
-		is_locked = spin_trylock_irqsave(&psinfo->buf_lock, flags);
-		if (!is_locked) {
-			pr_err("pstore dump routine blocked in %s path, may corrupt error record\n"
-				       , in_nmi() ? "NMI" : why);
+	if (down_trylock(&psinfo->buf_lock)) {
+		/* Failed to acquire lock: give up if we cannot wait. */
+		if (pstore_cannot_wait(reason)) {
+			pr_err("dump skipped in %s path: may corrupt error record\n",
+				in_nmi() ? "NMI" : why);
+			return;
+		}
+		if (down_interruptible(&psinfo->buf_lock)) {
+			pr_err("could not grab semaphore?!\n");
 			return;
 		}
-	} else {
-		spin_lock_irqsave(&psinfo->buf_lock, flags);
-		is_locked = 1;
 	}
+
 	oopscount++;
 	while (total < kmsg_bytes) {
 		char *dst;
@@ -411,7 +414,7 @@ static void pstore_dump(struct kmsg_dumper *dumper,
 		record.part = part;
 		record.buf = psinfo->buf;
 
-		if (big_oops_buf && is_locked) {
+		if (big_oops_buf) {
 			dst = big_oops_buf;
 			dst_size = big_oops_buf_sz;
 		} else {
@@ -429,7 +432,7 @@ static void pstore_dump(struct kmsg_dumper *dumper,
 					  dst_size, &dump_size))
 			break;
 
-		if (big_oops_buf && is_locked) {
+		if (big_oops_buf) {
 			zipped_len = pstore_compress(dst, psinfo->buf,
 						header_size + dump_size,
 						psinfo->bufsize);
@@ -452,8 +455,8 @@ static void pstore_dump(struct kmsg_dumper *dumper,
 		total += record.size;
 		part++;
 	}
-	if (is_locked)
-		spin_unlock_irqrestore(&psinfo->buf_lock, flags);
+
+	up(&psinfo->buf_lock);
 }
 
 static struct kmsg_dumper pstore_dumper = {
@@ -476,31 +479,14 @@ static void pstore_unregister_kmsg(void)
 #ifdef CONFIG_PSTORE_CONSOLE
 static void pstore_console_write(struct console *con, const char *s, unsigned c)
 {
-	const char *e = s + c;
+	struct pstore_record record;
 
-	while (s < e) {
-		struct pstore_record record;
-		unsigned long flags;
-
-		pstore_record_init(&record, psinfo);
-		record.type = PSTORE_TYPE_CONSOLE;
+	pstore_record_init(&record, psinfo);
+	record.type = PSTORE_TYPE_CONSOLE;
 
-		if (c > psinfo->bufsize)
-			c = psinfo->bufsize;
-
-		if (oops_in_progress) {
-			if (!spin_trylock_irqsave(&psinfo->buf_lock, flags))
-				break;
-		} else {
-			spin_lock_irqsave(&psinfo->buf_lock, flags);
-		}
-		record.buf = (char *)s;
-		record.size = c;
-		psinfo->write(&record);
-		spin_unlock_irqrestore(&psinfo->buf_lock, flags);
-		s += c;
-		c = e - s;
-	}
+	record.buf = (char *)s;
+	record.size = c;
+	psinfo->write(&record);
 }
 
 static struct console pstore_console = {
@@ -589,6 +575,7 @@ int pstore_register(struct pstore_info *psi)
 		psi->write_user = pstore_write_user_compat;
 	psinfo = psi;
 	mutex_init(&psinfo->read_mutex);
+	sema_init(&psinfo->buf_lock, 1);
 	spin_unlock(&pstore_lock);
 
 	if (owner && !try_module_get(owner)) {
@@ -596,7 +583,8 @@ int pstore_register(struct pstore_info *psi)
 		return -EINVAL;
 	}
 
-	allocate_buf_for_compression();
+	if (psi->flags & PSTORE_FLAGS_DMESG)
+		allocate_buf_for_compression();
 
 	if (pstore_is_mounted())
 		pstore_get_records(0);
diff --git a/fs/pstore/ram.c b/fs/pstore/ram.c
index 44ed6b193d2e..316c16463b20 100644
--- a/fs/pstore/ram.c
+++ b/fs/pstore/ram.c
@@ -803,27 +803,36 @@ static int ramoops_probe(struct platform_device *pdev)
 
 	cxt->pstore.data = cxt;
 	/*
-	 * Since bufsize is only used for dmesg crash dumps, it
-	 * must match the size of the dprz record (after PRZ header
-	 * and ECC bytes have been accounted for).
+	 * Prepare frontend flags based on which areas are initialized.
+	 * For ramoops_init_przs() cases, the "max count" variable tells
+	 * if there are regions present. For ramoops_init_prz() cases,
+	 * the single region size is how to check.
 	 */
-	cxt->pstore.bufsize = cxt->dprzs[0]->buffer_size;
-	cxt->pstore.buf = kzalloc(cxt->pstore.bufsize, GFP_KERNEL);
-	if (!cxt->pstore.buf) {
-		pr_err("cannot allocate pstore crash dump buffer\n");
-		err = -ENOMEM;
-		goto fail_clear;
-	}
-	spin_lock_init(&cxt->pstore.buf_lock);
-
-	cxt->pstore.flags = PSTORE_FLAGS_DMESG;
+	cxt->pstore.flags = 0;
+	if (cxt->max_dump_cnt)
+		cxt->pstore.flags |= PSTORE_FLAGS_DMESG;
 	if (cxt->console_size)
 		cxt->pstore.flags |= PSTORE_FLAGS_CONSOLE;
-	if (cxt->ftrace_size)
+	if (cxt->max_ftrace_cnt)
 		cxt->pstore.flags |= PSTORE_FLAGS_FTRACE;
 	if (cxt->pmsg_size)
 		cxt->pstore.flags |= PSTORE_FLAGS_PMSG;
 
+	/*
+	 * Since bufsize is only used for dmesg crash dumps, it
+	 * must match the size of the dprz record (after PRZ header
+	 * and ECC bytes have been accounted for).
+	 */
+	if (cxt->pstore.flags & PSTORE_FLAGS_DMESG) {
+		cxt->pstore.bufsize = cxt->dprzs[0]->buffer_size;
+		cxt->pstore.buf = kzalloc(cxt->pstore.bufsize, GFP_KERNEL);
+		if (!cxt->pstore.buf) {
+			pr_err("cannot allocate pstore crash dump buffer\n");
+			err = -ENOMEM;
+			goto fail_clear;
+		}
+	}
+
 	err = pstore_register(&cxt->pstore);
 	if (err) {
 		pr_err("registering with pstore failed\n");
diff --git a/include/drm/drm_modeset_helper_vtables.h b/include/drm/drm_modeset_helper_vtables.h
index 61142aa0ab23..0eb3372d0311 100644
--- a/include/drm/drm_modeset_helper_vtables.h
+++ b/include/drm/drm_modeset_helper_vtables.h
@@ -1174,6 +1174,14 @@ struct drm_plane_helper_funcs {
 	 * current one with the new plane configurations in the new
 	 * plane_state.
 	 *
+	 * Drivers should also swap the framebuffers between current plane
+	 * state (&drm_plane.state) and new_state.
+	 * This is required since cleanup for async commits is performed on
+	 * the new state, rather than old state like for traditional commits.
+	 * Since we want to give up the reference on the current (old) fb
+	 * instead of our brand new one, swap them in the driver during the
+	 * async commit.
+	 *
 	 * FIXME:
 	 *  - It only works for single plane updates
 	 *  - Async Pageflips are not supported yet
diff --git a/include/linux/cpu.h b/include/linux/cpu.h
index 57ae83c4d5f4..006f69f9277b 100644
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
@@ -183,10 +183,14 @@ enum cpuhp_smt_control {
 extern enum cpuhp_smt_control cpu_smt_control;
 extern void cpu_smt_disable(bool force);
 extern void cpu_smt_check_topology(void);
+extern int cpuhp_smt_enable(void);
+extern int cpuhp_smt_disable(enum cpuhp_smt_control ctrlval);
 #else
 # define cpu_smt_control		(CPU_SMT_ENABLED)
 static inline void cpu_smt_disable(bool force) { }
 static inline void cpu_smt_check_topology(void) { }
+static inline int cpuhp_smt_enable(void) { return 0; }
+static inline int cpuhp_smt_disable(enum cpuhp_smt_control ctrlval) { return 0; }
 #endif
 
 /*
diff --git a/include/linux/pstore.h b/include/linux/pstore.h
index 30fcec375a3a..de9093d6e660 100644
--- a/include/linux/pstore.h
+++ b/include/linux/pstore.h
@@ -26,7 +26,7 @@
 #include <linux/errno.h>
 #include <linux/kmsg_dump.h>
 #include <linux/mutex.h>
-#include <linux/spinlock.h>
+#include <linux/semaphore.h>
 #include <linux/time.h>
 #include <linux/types.h>
 
@@ -88,7 +88,7 @@ struct pstore_record {
  * @owner:	module which is repsonsible for this backend driver
  * @name:	name of the backend driver
  *
- * @buf_lock:	spinlock to serialize access to @buf
+ * @buf_lock:	semaphore to serialize access to @buf
  * @buf:	preallocated crash dump buffer
  * @bufsize:	size of @buf available for crash dump bytes (must match
  *		smallest number of bytes available for writing to a
@@ -173,7 +173,7 @@ struct pstore_info {
 	struct module	*owner;
 	char		*name;
 
-	spinlock_t	buf_lock;
+	struct semaphore buf_lock;
 	char		*buf;
 	size_t		bufsize;
 
@@ -199,7 +199,6 @@ struct pstore_info {
 
 extern int pstore_register(struct pstore_info *);
 extern void pstore_unregister(struct pstore_info *);
-extern bool pstore_cannot_block_path(enum kmsg_dump_reason reason);
 
 struct pstore_ftrace_record {
 	unsigned long ip;
diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h
index 75e5b393cf44..e102c5bccbb9 100644
--- a/include/linux/rcupdate.h
+++ b/include/linux/rcupdate.h
@@ -78,14 +78,12 @@ void synchronize_rcu(void);
 
 static inline void __rcu_read_lock(void)
 {
-	if (IS_ENABLED(CONFIG_PREEMPT_COUNT))
-		preempt_disable();
+	preempt_disable();
 }
 
 static inline void __rcu_read_unlock(void)
 {
-	if (IS_ENABLED(CONFIG_PREEMPT_COUNT))
-		preempt_enable();
+	preempt_enable();
 }
 
 static inline void synchronize_rcu(void)
diff --git a/include/net/arp.h b/include/net/arp.h
index 977aabfcdc03..c8f580a0e6b1 100644
--- a/include/net/arp.h
+++ b/include/net/arp.h
@@ -18,6 +18,7 @@ static inline u32 arp_hashfn(const void *pkey, const struct net_device *dev, u32
 	return val * hash_rnd[0];
 }
 
+#ifdef CONFIG_INET
 static inline struct neighbour *__ipv4_neigh_lookup_noref(struct net_device *dev, u32 key)
 {
 	if (dev->flags & (IFF_LOOPBACK | IFF_POINTOPOINT))
@@ -25,6 +26,13 @@ static inline struct neighbour *__ipv4_neigh_lookup_noref(struct net_device *dev
 
 	return ___neigh_lookup_noref(&arp_tbl, neigh_key_eq32, arp_hashfn, &key, dev);
 }
+#else
+static inline
+struct neighbour *__ipv4_neigh_lookup_noref(struct net_device *dev, u32 key)
+{
+	return NULL;
+}
+#endif
 
 static inline struct neighbour *__ipv4_neigh_lookup(struct net_device *dev, u32 key)
 {
diff --git a/include/net/ip6_fib.h b/include/net/ip6_fib.h
index 983f7a1a3f1d..62c936230cc8 100644
--- a/include/net/ip6_fib.h
+++ b/include/net/ip6_fib.h
@@ -260,8 +260,7 @@ static inline u32 rt6_get_cookie(const struct rt6_info *rt)
 	rcu_read_lock();
 
 	from = rcu_dereference(rt->from);
-	if (from && (rt->rt6i_flags & RTF_PCPU ||
-	    unlikely(!list_empty(&rt->rt6i_uncached))))
+	if (from)
 		fib6_get_cookie_safe(from, &cookie);
 
 	rcu_read_unlock();
diff --git a/include/net/tls.h b/include/net/tls.h
index c423b7d0b6ab..954110575891 100644
--- a/include/net/tls.h
+++ b/include/net/tls.h
@@ -161,6 +161,10 @@ enum {
 	TLS_PENDING_CLOSED_RECORD
 };
 
+enum tls_context_flags {
+	TLS_RX_SYNC_RUNNING = 0,
+};
+
 struct cipher_context {
 	u16 prepend_size;
 	u16 tag_size;
diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h
index 7f5634ce8e88..4671c9150d4d 100644
--- a/include/uapi/drm/i915_drm.h
+++ b/include/uapi/drm/i915_drm.h
@@ -942,7 +942,7 @@ struct drm_i915_gem_execbuffer2 {
 	 * struct drm_i915_gem_exec_fence *fences.
 	 */
 	__u64 cliprects_ptr;
-#define I915_EXEC_RING_MASK              (7<<0)
+#define I915_EXEC_RING_MASK              (0x3f)
 #define I915_EXEC_DEFAULT                (0<<0)
 #define I915_EXEC_RENDER                 (1<<0)
 #define I915_EXEC_BSD                    (2<<0)
diff --git a/kernel/cpu.c b/kernel/cpu.c
index bc6c880a093f..5d65eae893bd 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -2035,7 +2035,7 @@ static void cpuhp_online_cpu_device(unsigned int cpu)
 	kobject_uevent(&dev->kobj, KOBJ_ONLINE);
 }
 
-static int cpuhp_smt_disable(enum cpuhp_smt_control ctrlval)
+int cpuhp_smt_disable(enum cpuhp_smt_control ctrlval)
 {
 	int cpu, ret = 0;
 
@@ -2069,7 +2069,7 @@ static int cpuhp_smt_disable(enum cpuhp_smt_control ctrlval)
 	return ret;
 }
 
-static int cpuhp_smt_enable(void)
+int cpuhp_smt_enable(void)
 {
 	int cpu, ret = 0;
 
diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c
index abef759de7c8..f5ce9f7ec132 100644
--- a/kernel/power/hibernate.c
+++ b/kernel/power/hibernate.c
@@ -258,6 +258,11 @@ void swsusp_show_speed(ktime_t start, ktime_t stop,
 		(kps % 1000) / 10);
 }
 
+__weak int arch_resume_nosmt(void)
+{
+	return 0;
+}
+
 /**
  * create_image - Create a hibernation image.
  * @platform_mode: Whether or not to use the platform driver.
@@ -325,6 +330,10 @@ static int create_image(int platform_mode)
  Enable_cpus:
 	enable_nonboot_cpus();
 
+	/* Allow architectures to do nosmt-specific post-resume dances */
+	if (!in_suspend)
+		error = arch_resume_nosmt();
+
  Platform_finish:
 	platform_finish(platform_mode);
 
diff --git a/lib/test_firmware.c b/lib/test_firmware.c
index 7cab9a9869ac..fd48a15a0710 100644
--- a/lib/test_firmware.c
+++ b/lib/test_firmware.c
@@ -223,30 +223,30 @@ static ssize_t config_show(struct device *dev,
 
 	mutex_lock(&test_fw_mutex);
 
-	len += snprintf(buf, PAGE_SIZE,
+	len += scnprintf(buf, PAGE_SIZE - len,
 			"Custom trigger configuration for: %s\n",
 			dev_name(dev));
 
 	if (test_fw_config->name)
-		len += snprintf(buf+len, PAGE_SIZE,
+		len += scnprintf(buf+len, PAGE_SIZE - len,
 				"name:\t%s\n",
 				test_fw_config->name);
 	else
-		len += snprintf(buf+len, PAGE_SIZE,
+		len += scnprintf(buf+len, PAGE_SIZE - len,
 				"name:\tEMTPY\n");
 
-	len += snprintf(buf+len, PAGE_SIZE,
+	len += scnprintf(buf+len, PAGE_SIZE - len,
 			"num_requests:\t%u\n", test_fw_config->num_requests);
 
-	len += snprintf(buf+len, PAGE_SIZE,
+	len += scnprintf(buf+len, PAGE_SIZE - len,
 			"send_uevent:\t\t%s\n",
 			test_fw_config->send_uevent ?
 			"FW_ACTION_HOTPLUG" :
 			"FW_ACTION_NOHOTPLUG");
-	len += snprintf(buf+len, PAGE_SIZE,
+	len += scnprintf(buf+len, PAGE_SIZE - len,
 			"sync_direct:\t\t%s\n",
 			test_fw_config->sync_direct ? "true" : "false");
-	len += snprintf(buf+len, PAGE_SIZE,
+	len += scnprintf(buf+len, PAGE_SIZE - len,
 			"read_fw_idx:\t%u\n", test_fw_config->read_fw_idx);
 
 	mutex_unlock(&test_fw_mutex);
diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index 7cc97f43f138..996813f345d5 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -880,8 +880,13 @@ static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev,
 		if (rc >= 0)
 			info.n_priv_flags = rc;
 	}
-	if (ops->get_regs_len)
-		info.regdump_len = ops->get_regs_len(dev);
+	if (ops->get_regs_len) {
+		int ret = ops->get_regs_len(dev);
+
+		if (ret > 0)
+			info.regdump_len = ret;
+	}
+
 	if (ops->get_eeprom_len)
 		info.eedump_len = ops->get_eeprom_len(dev);
 
@@ -1424,6 +1429,9 @@ static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
 		return -EFAULT;
 
 	reglen = ops->get_regs_len(dev);
+	if (reglen <= 0)
+		return reglen;
+
 	if (regs.len > reglen)
 		regs.len = reglen;
 
@@ -1434,13 +1442,16 @@ static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
 			return -ENOMEM;
 	}
 
+	if (regs.len < reglen)
+		reglen = regs.len;
+
 	ops->get_regs(dev, &regs, regbuf);
 
 	ret = -EFAULT;
 	if (copy_to_user(useraddr, &regs, sizeof(regs)))
 		goto out;
 	useraddr += offsetof(struct ethtool_regs, data);
-	if (regbuf && copy_to_user(useraddr, regbuf, regs.len))
+	if (copy_to_user(useraddr, regbuf, reglen))
 		goto out;
 	ret = 0;
 
diff --git a/net/core/fib_rules.c b/net/core/fib_rules.c
index 338147b14d0e..0ff3953f64aa 100644
--- a/net/core/fib_rules.c
+++ b/net/core/fib_rules.c
@@ -756,9 +756,9 @@ int fib_nl_newrule(struct sk_buff *skb, struct nlmsghdr *nlh,
 	if (err)
 		goto errout;
 
-	if (rule_exists(ops, frh, tb, rule)) {
-		if (nlh->nlmsg_flags & NLM_F_EXCL)
-			err = -EEXIST;
+	if ((nlh->nlmsg_flags & NLM_F_EXCL) &&
+	    rule_exists(ops, frh, tb, rule)) {
+		err = -EEXIST;
 		goto errout_free;
 	}
 
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 4e07824eec5e..4e4ac77c6816 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -30,6 +30,7 @@
 #include <linux/times.h>
 #include <net/net_namespace.h>
 #include <net/neighbour.h>
+#include <net/arp.h>
 #include <net/dst.h>
 #include <net/sock.h>
 #include <net/netevent.h>
@@ -2536,7 +2537,13 @@ int neigh_xmit(int index, struct net_device *dev,
 		if (!tbl)
 			goto out;
 		rcu_read_lock_bh();
-		neigh = __neigh_lookup_noref(tbl, addr, dev);
+		if (index == NEIGH_ARP_TABLE) {
+			u32 key = *((u32 *)addr);
+
+			neigh = __ipv4_neigh_lookup_noref(dev, key);
+		} else {
+			neigh = __neigh_lookup_noref(tbl, addr, dev);
+		}
 		if (!neigh)
 			neigh = __neigh_create(tbl, addr, dev, false);
 		err = PTR_ERR(neigh);
diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index 7f6938405fa1..092fa3d75b32 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -3065,7 +3065,13 @@ static int pktgen_wait_thread_run(struct pktgen_thread *t)
 {
 	while (thread_is_running(t)) {
 
+		/* note: 't' will still be around even after the unlock/lock
+		 * cycle because pktgen_thread threads are only cleared at
+		 * net exit
+		 */
+		mutex_unlock(&pktgen_thread_lock);
 		msleep_interruptible(100);
+		mutex_lock(&pktgen_thread_lock);
 
 		if (signal_pending(current))
 			goto signal;
@@ -3080,6 +3086,10 @@ static int pktgen_wait_all_threads_run(struct pktgen_net *pn)
 	struct pktgen_thread *t;
 	int sig = 1;
 
+	/* prevent from racing with rmmod */
+	if (!try_module_get(THIS_MODULE))
+		return sig;
+
 	mutex_lock(&pktgen_thread_lock);
 
 	list_for_each_entry(t, &pn->pktgen_threads, th_list) {
@@ -3093,6 +3103,7 @@ static int pktgen_wait_all_threads_run(struct pktgen_net *pn)
 			t->control |= (T_STOP);
 
 	mutex_unlock(&pktgen_thread_lock);
+	module_put(THIS_MODULE);
 	return sig;
 }
 
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 40bf19f7ae1a..232581c140a0 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1960,7 +1960,7 @@ static int ip_route_input_slow(struct sk_buff *skb, __be32 daddr, __be32 saddr,
 	u32		itag = 0;
 	struct rtable	*rth;
 	struct flowi4	fl4;
-	bool do_cache;
+	bool do_cache = true;
 
 	/* IP on this device is disabled. */
 
@@ -2037,6 +2037,9 @@ static int ip_route_input_slow(struct sk_buff *skb, __be32 daddr, __be32 saddr,
 	if (res->type == RTN_BROADCAST) {
 		if (IN_DEV_BFORWARD(in_dev))
 			goto make_route;
+		/* not do cache if bc_forwarding is enabled */
+		if (IPV4_DEVCONF_ALL(net, BC_FORWARDING))
+			do_cache = false;
 		goto brd_input;
 	}
 
@@ -2074,16 +2077,13 @@ brd_input:
 	RT_CACHE_STAT_INC(in_brd);
 
 local_input:
-	do_cache = false;
-	if (res->fi) {
-		if (!itag) {
-			rth = rcu_dereference(FIB_RES_NH(*res).nh_rth_input);
-			if (rt_cache_valid(rth)) {
-				skb_dst_set_noref(skb, &rth->dst);
-				err = 0;
-				goto out;
-			}
-			do_cache = true;
+	do_cache &= res->fi && !itag;
+	if (do_cache) {
+		rth = rcu_dereference(FIB_RES_NH(*res).nh_rth_input);
+		if (rt_cache_valid(rth)) {
+			skb_dst_set_noref(skb, &rth->dst);
+			err = 0;
+			goto out;
 		}
 	}
 
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index 5833d4af7311..4856d9320b28 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -782,6 +782,7 @@ static int rawv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
 	struct flowi6 fl6;
 	struct ipcm6_cookie ipc6;
 	int addr_len = msg->msg_namelen;
+	int hdrincl;
 	u16 proto;
 	int err;
 
@@ -795,6 +796,13 @@ static int rawv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
 	if (msg->msg_flags & MSG_OOB)
 		return -EOPNOTSUPP;
 
+	/* hdrincl should be READ_ONCE(inet->hdrincl)
+	 * but READ_ONCE() doesn't work with bit fields.
+	 * Doing this indirectly yields the same result.
+	 */
+	hdrincl = inet->hdrincl;
+	hdrincl = READ_ONCE(hdrincl);
+
 	/*
 	 *	Get and verify the address.
 	 */
@@ -886,11 +894,14 @@ static int rawv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
 	opt = ipv6_fixup_options(&opt_space, opt);
 
 	fl6.flowi6_proto = proto;
-	rfv.msg = msg;
-	rfv.hlen = 0;
-	err = rawv6_probe_proto_opt(&rfv, &fl6);
-	if (err)
-		goto out;
+
+	if (!hdrincl) {
+		rfv.msg = msg;
+		rfv.hlen = 0;
+		err = rawv6_probe_proto_opt(&rfv, &fl6);
+		if (err)
+			goto out;
+	}
 
 	if (!ipv6_addr_any(daddr))
 		fl6.daddr = *daddr;
@@ -907,7 +918,7 @@ static int rawv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
 		fl6.flowi6_oif = np->ucast_oif;
 	security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
 
-	if (inet->hdrincl)
+	if (hdrincl)
 		fl6.flowi6_flags |= FLOWI_FLAG_KNOWN_NH;
 
 	if (ipc6.tclass < 0)
@@ -930,7 +941,7 @@ static int rawv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
 		goto do_confirm;
 
 back_from_confirm:
-	if (inet->hdrincl)
+	if (hdrincl)
 		err = rawv6_send_hdrinc(sk, msg, len, &fl6, &dst,
 					msg->msg_flags, &ipc6.sockc);
 	else {
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 18df3bce73da..d98fcf926166 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -3017,8 +3017,8 @@ static int packet_release(struct socket *sock)
 
 	synchronize_net();
 
+	kfree(po->rollover);
 	if (f) {
-		kfree(po->rollover);
 		fanout_release_data(f);
 		kfree(f);
 	}
diff --git a/net/rds/ib_rdma.c b/net/rds/ib_rdma.c
index d664e9ade74d..0b347f46b2f4 100644
--- a/net/rds/ib_rdma.c
+++ b/net/rds/ib_rdma.c
@@ -428,12 +428,14 @@ int rds_ib_flush_mr_pool(struct rds_ib_mr_pool *pool,
 		wait_clean_list_grace();
 
 		list_to_llist_nodes(pool, &unmap_list, &clean_nodes, &clean_tail);
-		if (ibmr_ret)
+		if (ibmr_ret) {
 			*ibmr_ret = llist_entry(clean_nodes, struct rds_ib_mr, llnode);
-
+			clean_nodes = clean_nodes->next;
+		}
 		/* more than one entry in llist nodes */
-		if (clean_nodes->next)
-			llist_add_batch(clean_nodes->next, clean_tail, &pool->clean_list);
+		if (clean_nodes)
+			llist_add_batch(clean_nodes, clean_tail,
+					&pool->clean_list);
 
 	}
 
diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index d05c57664e36..ae65a1cfa596 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -2329,7 +2329,6 @@ int sctp_process_init(struct sctp_association *asoc, struct sctp_chunk *chunk,
 	union sctp_addr addr;
 	struct sctp_af *af;
 	int src_match = 0;
-	char *cookie;
 
 	/* We must include the address that the INIT packet came from.
 	 * This is the only address that matters for an INIT packet.
@@ -2433,14 +2432,6 @@ int sctp_process_init(struct sctp_association *asoc, struct sctp_chunk *chunk,
 	/* Peer Rwnd   : Current calculated value of the peer's rwnd.  */
 	asoc->peer.rwnd = asoc->peer.i.a_rwnd;
 
-	/* Copy cookie in case we need to resend COOKIE-ECHO. */
-	cookie = asoc->peer.cookie;
-	if (cookie) {
-		asoc->peer.cookie = kmemdup(cookie, asoc->peer.cookie_len, gfp);
-		if (!asoc->peer.cookie)
-			goto clean_up;
-	}
-
 	/* RFC 2960 7.2.1 The initial value of ssthresh MAY be arbitrarily
 	 * high (for example, implementations MAY use the size of the receiver
 	 * advertised window).
@@ -2609,7 +2600,9 @@ do_addr_param:
 	case SCTP_PARAM_STATE_COOKIE:
 		asoc->peer.cookie_len =
 			ntohs(param.p->length) - sizeof(struct sctp_paramhdr);
-		asoc->peer.cookie = param.cookie->body;
+		asoc->peer.cookie = kmemdup(param.cookie->body, asoc->peer.cookie_len, gfp);
+		if (!asoc->peer.cookie)
+			retval = 0;
 		break;
 
 	case SCTP_PARAM_HEARTBEAT_INFO:
diff --git a/net/sctp/sm_sideeffect.c b/net/sctp/sm_sideeffect.c
index 48fe8f01265f..3131b4154c74 100644
--- a/net/sctp/sm_sideeffect.c
+++ b/net/sctp/sm_sideeffect.c
@@ -898,6 +898,11 @@ static void sctp_cmd_new_state(struct sctp_cmd_seq *cmds,
 						asoc->rto_initial;
 	}
 
+	if (sctp_state(asoc, ESTABLISHED)) {
+		kfree(asoc->peer.cookie);
+		asoc->peer.cookie = NULL;
+	}
+
 	if (sctp_state(asoc, ESTABLISHED) ||
 	    sctp_state(asoc, CLOSED) ||
 	    sctp_state(asoc, SHUTDOWN_RECEIVED)) {
diff --git a/net/tls/tls_device.c b/net/tls/tls_device.c
index 8035bf495eb2..ead29c2aefa7 100644
--- a/net/tls/tls_device.c
+++ b/net/tls/tls_device.c
@@ -545,10 +545,22 @@ static int tls_device_push_pending_record(struct sock *sk, int flags)
 	return tls_push_data(sk, &msg_iter, 0, flags, TLS_RECORD_TYPE_DATA);
 }
 
+static void tls_device_resync_rx(struct tls_context *tls_ctx,
+				 struct sock *sk, u32 seq, u64 rcd_sn)
+{
+	struct net_device *netdev;
+
+	if (WARN_ON(test_and_set_bit(TLS_RX_SYNC_RUNNING, &tls_ctx->flags)))
+		return;
+	netdev = READ_ONCE(tls_ctx->netdev);
+	if (netdev)
+		netdev->tlsdev_ops->tls_dev_resync_rx(netdev, sk, seq, rcd_sn);
+	clear_bit_unlock(TLS_RX_SYNC_RUNNING, &tls_ctx->flags);
+}
+
 void handle_device_resync(struct sock *sk, u32 seq, u64 rcd_sn)
 {
 	struct tls_context *tls_ctx = tls_get_ctx(sk);
-	struct net_device *netdev = tls_ctx->netdev;
 	struct tls_offload_context_rx *rx_ctx;
 	u32 is_req_pending;
 	s64 resync_req;
@@ -563,10 +575,10 @@ void handle_device_resync(struct sock *sk, u32 seq, u64 rcd_sn)
 	is_req_pending = resync_req;
 
 	if (unlikely(is_req_pending) && req_seq == seq &&
-	    atomic64_try_cmpxchg(&rx_ctx->resync_req, &resync_req, 0))
-		netdev->tlsdev_ops->tls_dev_resync_rx(netdev, sk,
-						      seq + TLS_HEADER_SIZE - 1,
-						      rcd_sn);
+	    atomic64_try_cmpxchg(&rx_ctx->resync_req, &resync_req, 0)) {
+		seq += TLS_HEADER_SIZE - 1;
+		tls_device_resync_rx(tls_ctx, sk, seq, rcd_sn);
+	}
 }
 
 static int tls_device_reencrypt(struct sock *sk, struct sk_buff *skb)
@@ -954,7 +966,10 @@ static int tls_device_down(struct net_device *netdev)
 		if (ctx->rx_conf == TLS_HW)
 			netdev->tlsdev_ops->tls_dev_del(netdev, ctx,
 							TLS_OFFLOAD_CTX_DIR_RX);
-		ctx->netdev = NULL;
+		WRITE_ONCE(ctx->netdev, NULL);
+		smp_mb__before_atomic(); /* pairs with test_and_set_bit() */
+		while (test_bit(TLS_RX_SYNC_RUNNING, &ctx->flags))
+			usleep_range(10, 200);
 		dev_put(netdev);
 		list_del_init(&ctx->list);