Gentoo Archives: gentoo-commits

From: Mike Pagano <mpagano@g.o>
To: gentoo-commits@l.g.o
Subject: [gentoo-commits] proj/linux-patches:4.19 commit in: /
Date: Thu, 31 Jan 2019 11:28:11
Message-Id: 1548934046.6670ad51f7a31da618109cb0747df2242d01d72d.mpagano@gentoo
commit:     6670ad51f7a31da618109cb0747df2242d01d72d
Author:     Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Thu Jan 31 11:27:26 2019 +0000
Commit:     Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Thu Jan 31 11:27:26 2019 +0000
URL:        https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=6670ad51

proj/linux-patches: Linux patch 4.19.19

Signed-off-by: Mike Pagano <mpagano <AT> gentoo.org>

 0000_README              |    4 +
 1018_linux-4.19.19.patch | 4389 ++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 4393 insertions(+)

diff --git a/0000_README b/0000_README
index 776e758..b459632 100644
--- a/0000_README
+++ b/0000_README
@@ -115,6 +115,10 @@ Patch:  1017_linux-4.19.18.patch
 From:   http://www.kernel.org
 Desc:   Linux 4.19.18
 
+Patch:  1018_linux-4.19.19.patch
+From:   http://www.kernel.org
+Desc:   Linux 4.19.19
+
 Patch:  1500_XATTR_USER_PREFIX.patch
 From:   https://bugs.gentoo.org/show_bug.cgi?id=470644
 Desc:   Support for namespace user.pax.* on tmpfs.

diff --git a/1018_linux-4.19.19.patch b/1018_linux-4.19.19.patch
new file mode 100644
index 0000000..ffdaa82
--- /dev/null
+++ b/1018_linux-4.19.19.patch
@@ -0,0 +1,4389 @@
+diff --git a/Makefile b/Makefile
+index 9f37a8a9feb9..39c4e7c3c13c 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,7 +1,7 @@
+ # SPDX-License-Identifier: GPL-2.0
+ VERSION = 4
+ PATCHLEVEL = 19
+-SUBLEVEL = 18
++SUBLEVEL = 19
+ EXTRAVERSION =
+ NAME = "People's Front"
+ 
+diff --git a/arch/arc/include/asm/perf_event.h b/arch/arc/include/asm/perf_event.h
+index 9185541035cc..6958545390f0 100644
+--- a/arch/arc/include/asm/perf_event.h
++++ b/arch/arc/include/asm/perf_event.h
+@@ -103,7 +103,8 @@ static const char * const arc_pmu_ev_hw_map[] = {
+ 
+ 	/* counts condition */
+ 	[PERF_COUNT_HW_INSTRUCTIONS] = "iall",
+-	[PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = "ijmp", /* Excludes ZOL jumps */
++	/* All jump instructions that are taken */
++	[PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = "ijmptak",
+ 	[PERF_COUNT_ARC_BPOK]         = "bpok",	  /* NP-NT, PT-T, PNT-NT */
+ #ifdef CONFIG_ISA_ARCV2
+ 	[PERF_COUNT_HW_BRANCH_MISSES] = "bpmp",
+diff --git a/arch/arc/lib/memset-archs.S b/arch/arc/lib/memset-archs.S
+index 62ad4bcb841a..f230bb7092fd 100644
+--- a/arch/arc/lib/memset-archs.S
++++ b/arch/arc/lib/memset-archs.S
+@@ -7,11 +7,39 @@
+  */
+ 
+ #include <linux/linkage.h>
++#include <asm/cache.h>
+ 
+-#undef PREALLOC_NOT_AVAIL
++/*
++ * The memset implementation below is optimized to use prefetchw and prealloc
++ * instruction in case of CPU with 64B L1 data cache line (L1_CACHE_SHIFT == 6)
++ * If you want to implement optimized memset for other possible L1 data cache
++ * line lengths (32B and 128B) you should rewrite code carefully checking
++ * we don't call any prefetchw/prealloc instruction for L1 cache lines which
++ * don't belongs to memset area.
++ */
++
++#if L1_CACHE_SHIFT == 6
++
++.macro PREALLOC_INSTR	reg, off
++	prealloc	[\reg, \off]
++.endm
++
++.macro PREFETCHW_INSTR	reg, off
++	prefetchw	[\reg, \off]
++.endm
++
++#else
++
++.macro PREALLOC_INSTR
++.endm
++
++.macro PREFETCHW_INSTR
++.endm
++
++#endif
+ 
+ ENTRY_CFI(memset)
+-	prefetchw [r0]		; Prefetch the write location
++	PREFETCHW_INSTR	r0, 0	; Prefetch the first write location
+ 	mov.f	0, r2
+ ;;; if size is zero
+ 	jz.d	[blink]
+@@ -48,11 +76,8 @@ ENTRY_CFI(memset)
+ 
+ 	lpnz	@.Lset64bytes
+ 	;; LOOP START
+-#ifdef PREALLOC_NOT_AVAIL
+-	prefetchw [r3, 64]	;Prefetch the next write location
+-#else
+-	prealloc  [r3, 64]
+-#endif
++	PREALLOC_INSTR	r3, 64	; alloc next line w/o fetching
++
+ #ifdef CONFIG_ARC_HAS_LL64
+ 	std.ab	r4, [r3, 8]
+ 	std.ab	r4, [r3, 8]
+@@ -85,7 +110,6 @@ ENTRY_CFI(memset)
+ 	lsr.f	lp_count, r2, 5 ;Last remaining  max 124 bytes
+ 	lpnz	.Lset32bytes
+ 	;; LOOP START
+-	prefetchw   [r3, 32]	;Prefetch the next write location
+ #ifdef CONFIG_ARC_HAS_LL64
+ 	std.ab	r4, [r3, 8]
+ 	std.ab	r4, [r3, 8]
+diff --git a/arch/arc/mm/init.c b/arch/arc/mm/init.c
+index ba145065c579..f890b2f9f82f 100644
+--- a/arch/arc/mm/init.c
++++ b/arch/arc/mm/init.c
+@@ -138,7 +138,8 @@ void __init setup_arch_memory(void)
+ 	 */
+ 
+ 	memblock_add_node(low_mem_start, low_mem_sz, 0);
+-	memblock_reserve(low_mem_start, __pa(_end) - low_mem_start);
++	memblock_reserve(CONFIG_LINUX_LINK_BASE,
++			 __pa(_end) - CONFIG_LINUX_LINK_BASE);
+ 
+ #ifdef CONFIG_BLK_DEV_INITRD
+ 	if (initrd_start)
+diff --git a/arch/s390/include/asm/mmu_context.h b/arch/s390/include/asm/mmu_context.h
+index f1ab9420ccfb..09b61d0e491f 100644
+--- a/arch/s390/include/asm/mmu_context.h
++++ b/arch/s390/include/asm/mmu_context.h
+@@ -89,8 +89,6 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
+ {
+ 	int cpu = smp_processor_id();
+ 
+-	if (prev == next)
+-		return;
+ 	S390_lowcore.user_asce = next->context.asce;
+ 	cpumask_set_cpu(cpu, &next->context.cpu_attach_mask);
+ 	/* Clear previous user-ASCE from CR1 and CR7 */
+@@ -102,7 +100,8 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
+ 		__ctl_load(S390_lowcore.vdso_asce, 7, 7);
+ 		clear_cpu_flag(CIF_ASCE_SECONDARY);
+ 	}
+-	cpumask_clear_cpu(cpu, &prev->context.cpu_attach_mask);
++	if (prev != next)
++		cpumask_clear_cpu(cpu, &prev->context.cpu_attach_mask);
+ }
+ 
+ #define finish_arch_post_lock_switch finish_arch_post_lock_switch
+diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c
+index 5b28b434f8a1..e7e6608b996c 100644
+--- a/arch/s390/kernel/early.c
++++ b/arch/s390/kernel/early.c
+@@ -64,10 +64,10 @@ static noinline __init void detect_machine_type(void)
+ 	if (stsi(vmms, 3, 2, 2) || !vmms->count)
+ 		return;
+ 
+-	/* Running under KVM? If not we assume z/VM */
++	/* Detect known hypervisors */
+ 	if (!memcmp(vmms->vm[0].cpi, "\xd2\xe5\xd4", 3))
+ 		S390_lowcore.machine_flags |= MACHINE_FLAG_KVM;
+-	else
++	else if (!memcmp(vmms->vm[0].cpi, "\xa9\x61\xe5\xd4", 4))
+ 		S390_lowcore.machine_flags |= MACHINE_FLAG_VM;
+ }
+ 
+diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
+index c637c12f9e37..a0097f8bada8 100644
+--- a/arch/s390/kernel/setup.c
++++ b/arch/s390/kernel/setup.c
+@@ -882,6 +882,8 @@ void __init setup_arch(char **cmdline_p)
+ 		pr_info("Linux is running under KVM in 64-bit mode\n");
+ 	else if (MACHINE_IS_LPAR)
+ 		pr_info("Linux is running natively in 64-bit mode\n");
++	else
++		pr_info("Linux is running as a guest in 64-bit mode\n");
+ 
+ 	/* Have one command line that is parsed and saved in /proc/cmdline */
+ 	/* boot_command_line has been already set up in early.c */
+diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
+index 2f8f7d7dd9a8..da02f4087d61 100644
+--- a/arch/s390/kernel/smp.c
++++ b/arch/s390/kernel/smp.c
+@@ -371,9 +371,13 @@ void smp_call_online_cpu(void (*func)(void *), void *data)
+  */
+ void smp_call_ipl_cpu(void (*func)(void *), void *data)
+ {
++	struct lowcore *lc = pcpu_devices->lowcore;
++
++	if (pcpu_devices[0].address == stap())
++		lc = &S390_lowcore;
++
+ 	pcpu_delegate(&pcpu_devices[0], func, data,
+-		      pcpu_devices->lowcore->panic_stack -
+-		      PANIC_FRAME_OFFSET + PAGE_SIZE);
++		      lc->panic_stack - PANIC_FRAME_OFFSET + PAGE_SIZE);
+ }
+ 
+ int smp_find_processor_id(u16 address)
+@@ -1152,7 +1156,11 @@ static ssize_t __ref rescan_store(struct device *dev,
+ {
+ 	int rc;
+ 
++	rc = lock_device_hotplug_sysfs();
++	if (rc)
++		return rc;
+ 	rc = smp_rescan_cpus();
++	unlock_device_hotplug();
+ 	return rc ? rc : count;
+ }
+ static DEVICE_ATTR_WO(rescan);
+diff --git a/arch/x86/entry/entry_64_compat.S b/arch/x86/entry/entry_64_compat.S
+index 7d0df78db727..40d2834a8101 100644
+--- a/arch/x86/entry/entry_64_compat.S
++++ b/arch/x86/entry/entry_64_compat.S
+@@ -356,7 +356,8 @@ ENTRY(entry_INT80_compat)
+ 
+ 	/* Need to switch before accessing the thread stack. */
+ 	SWITCH_TO_KERNEL_CR3 scratch_reg=%rdi
+-	movq	%rsp, %rdi
++	/* In the Xen PV case we already run on the thread stack. */
++	ALTERNATIVE "movq %rsp, %rdi", "jmp .Lint80_keep_stack", X86_FEATURE_XENPV
+ 	movq	PER_CPU_VAR(cpu_current_top_of_stack), %rsp
+ 
+ 	pushq	6*8(%rdi)		/* regs->ss */
+@@ -365,8 +366,9 @@ ENTRY(entry_INT80_compat)
+ 	pushq	3*8(%rdi)		/* regs->cs */
+ 	pushq	2*8(%rdi)		/* regs->ip */
+ 	pushq	1*8(%rdi)		/* regs->orig_ax */
+-
+ 	pushq	(%rdi)			/* pt_regs->di */
++.Lint80_keep_stack:
++
+ 	pushq	%rsi			/* pt_regs->si */
+ 	xorl	%esi, %esi		/* nospec   si */
+ 	pushq	%rdx			/* pt_regs->dx */
+diff --git a/arch/x86/include/asm/mmu_context.h b/arch/x86/include/asm/mmu_context.h
+index eeeb9289c764..2252b63d38b5 100644
+--- a/arch/x86/include/asm/mmu_context.h
++++ b/arch/x86/include/asm/mmu_context.h
+@@ -178,6 +178,10 @@ static inline void switch_ldt(struct mm_struct *prev, struct mm_struct *next)
+ 
+ void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk);
+ 
++/*
++ * Init a new mm.  Used on mm copies, like at fork()
++ * and on mm's that are brand-new, like at execve().
++ */
+ static inline int init_new_context(struct task_struct *tsk,
+ 				   struct mm_struct *mm)
+ {
+@@ -228,8 +232,22 @@ do {						\
+ } while (0)
+ #endif
+ 
++static inline void arch_dup_pkeys(struct mm_struct *oldmm,
++				  struct mm_struct *mm)
++{
++#ifdef CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS
++	if (!cpu_feature_enabled(X86_FEATURE_OSPKE))
++		return;
++
++	/* Duplicate the oldmm pkey state in mm: */
++	mm->context.pkey_allocation_map = oldmm->context.pkey_allocation_map;
++	mm->context.execute_only_pkey   = oldmm->context.execute_only_pkey;
++#endif
++}
++
+ static inline int arch_dup_mmap(struct mm_struct *oldmm, struct mm_struct *mm)
+ {
++	arch_dup_pkeys(oldmm, mm);
+ 	paravirt_arch_dup_mmap(oldmm, mm);
+ 	return ldt_dup_context(oldmm, mm);
+ }
+diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c
+index d9b71924c23c..7f89d609095a 100644
+--- a/arch/x86/kernel/kvm.c
++++ b/arch/x86/kernel/kvm.c
+@@ -457,6 +457,7 @@ static void __send_ipi_mask(const struct cpumask *mask, int vector)
+ #else
+ 	u64 ipi_bitmap = 0;
+ #endif
++	long ret;
+ 
+ 	if (cpumask_empty(mask))
+ 		return;
+@@ -482,8 +483,9 @@ static void __send_ipi_mask(const struct cpumask *mask, int vector)
+ 		} else if (apic_id < min + KVM_IPI_CLUSTER_SIZE) {
+ 			max = apic_id < max ? max : apic_id;
+ 		} else {
+-			kvm_hypercall4(KVM_HC_SEND_IPI, (unsigned long)ipi_bitmap,
++			ret = kvm_hypercall4(KVM_HC_SEND_IPI, (unsigned long)ipi_bitmap,
+ 				(unsigned long)(ipi_bitmap >> BITS_PER_LONG), min, icr);
++			WARN_ONCE(ret < 0, "KVM: failed to send PV IPI: %ld", ret);
+ 			min = max = apic_id;
+ 			ipi_bitmap = 0;
+ 		}
+@@ -491,8 +493,9 @@ static void __send_ipi_mask(const struct cpumask *mask, int vector)
+ 	}
+ 
+ 	if (ipi_bitmap) {
+-		kvm_hypercall4(KVM_HC_SEND_IPI, (unsigned long)ipi_bitmap,
++		ret = kvm_hypercall4(KVM_HC_SEND_IPI, (unsigned long)ipi_bitmap,
+ 			(unsigned long)(ipi_bitmap >> BITS_PER_LONG), min, icr);
++		WARN_ONCE(ret < 0, "KVM: failed to send PV IPI: %ld", ret);
+ 	}
+ 
+ 	local_irq_restore(flags);
+diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
+index 841740045554..39a0e34ff676 100644
+--- a/arch/x86/kvm/vmx.c
++++ b/arch/x86/kvm/vmx.c
+@@ -8290,11 +8290,11 @@ static int enter_vmx_operation(struct kvm_vcpu *vcpu)
+ 	if (r < 0)
+ 		goto out_vmcs02;
+ 
+-	vmx->nested.cached_vmcs12 = kmalloc(VMCS12_SIZE, GFP_KERNEL);
++	vmx->nested.cached_vmcs12 = kzalloc(VMCS12_SIZE, GFP_KERNEL);
+ 	if (!vmx->nested.cached_vmcs12)
+ 		goto out_cached_vmcs12;
+ 
+-	vmx->nested.cached_shadow_vmcs12 = kmalloc(VMCS12_SIZE, GFP_KERNEL);
++	vmx->nested.cached_shadow_vmcs12 = kzalloc(VMCS12_SIZE, GFP_KERNEL);
+ 	if (!vmx->nested.cached_shadow_vmcs12)
+ 		goto out_cached_shadow_vmcs12;
+ 
+@@ -11733,7 +11733,7 @@ static int nested_vmx_check_apicv_controls(struct kvm_vcpu *vcpu,
+ 	    !nested_exit_intr_ack_set(vcpu) ||
+ 	    (vmcs12->posted_intr_nv & 0xff00) ||
+ 	    (vmcs12->posted_intr_desc_addr & 0x3f) ||
+-	    (!page_address_valid(vcpu, vmcs12->posted_intr_desc_addr))))
++	    (vmcs12->posted_intr_desc_addr >> cpuid_maxphyaddr(vcpu))))
+ 		return -EINVAL;
+ 
+ 	/* tpr shadow is needed by all apicv features. */
+@@ -13984,13 +13984,17 @@ static int vmx_get_nested_state(struct kvm_vcpu *vcpu,
+ 	else if (enable_shadow_vmcs && !vmx->nested.sync_shadow_vmcs)
+ 		copy_shadow_to_vmcs12(vmx);
+ 
+-	if (copy_to_user(user_kvm_nested_state->data, vmcs12, sizeof(*vmcs12)))
++	/*
++	 * Copy over the full allocated size of vmcs12 rather than just the size
++	 * of the struct.
++	 */
++	if (copy_to_user(user_kvm_nested_state->data, vmcs12, VMCS12_SIZE))
+ 		return -EFAULT;
+ 
+ 	if (nested_cpu_has_shadow_vmcs(vmcs12) &&
+ 	    vmcs12->vmcs_link_pointer != -1ull) {
+ 		if (copy_to_user(user_kvm_nested_state->data + VMCS12_SIZE,
+-				 get_shadow_vmcs12(vcpu), sizeof(*vmcs12)))
++				 get_shadow_vmcs12(vcpu), VMCS12_SIZE))
+ 			return -EFAULT;
+ 	}
+ 
+diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
+index 956eecd227f8..5a9a3ebe8fba 100644
+--- a/arch/x86/kvm/x86.c
++++ b/arch/x86/kvm/x86.c
+@@ -6277,8 +6277,7 @@ restart:
+ 		toggle_interruptibility(vcpu, ctxt->interruptibility);
+ 		vcpu->arch.emulate_regs_need_sync_to_vcpu = false;
+ 		kvm_rip_write(vcpu, ctxt->eip);
+-		if (r == EMULATE_DONE &&
+-		    (ctxt->tf || (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)))
++		if (r == EMULATE_DONE && ctxt->tf)
+ 			kvm_vcpu_do_singlestep(vcpu, &r);
+ 		if (!ctxt->have_exception ||
+ 		    exception_type(ctxt->exception.vector) == EXCPT_TRAP)
+@@ -6868,10 +6867,10 @@ int kvm_emulate_hypercall(struct kvm_vcpu *vcpu)
+ 	case KVM_HC_CLOCK_PAIRING:
+ 		ret = kvm_pv_clock_pairing(vcpu, a0, a1);
+ 		break;
++#endif
+ 	case KVM_HC_SEND_IPI:
+ 		ret = kvm_pv_send_ipi(vcpu->kvm, a0, a1, a2, a3, op_64_bit);
+ 		break;
+-#endif
+ 	default:
+ 		ret = -KVM_ENOSYS;
+ 		break;
+diff --git a/arch/x86/lib/kaslr.c b/arch/x86/lib/kaslr.c
+index 79778ab200e4..a53665116458 100644
+--- a/arch/x86/lib/kaslr.c
++++ b/arch/x86/lib/kaslr.c
+@@ -36,8 +36,8 @@ static inline u16 i8254(void)
+ 	u16 status, timer;
+ 
+ 	do {
+-		outb(I8254_PORT_CONTROL,
+-		     I8254_CMD_READBACK | I8254_SELECT_COUNTER0);
++		outb(I8254_CMD_READBACK | I8254_SELECT_COUNTER0,
++		     I8254_PORT_CONTROL);
+ 		status = inb(I8254_PORT_COUNTER0);
+ 		timer  = inb(I8254_PORT_COUNTER0);
+ 		timer |= inb(I8254_PORT_COUNTER0) << 8;
+diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
+index 75b331f8a16a..ea59c01ce8db 100644
+--- a/drivers/acpi/nfit/core.c
++++ b/drivers/acpi/nfit/core.c
+@@ -391,6 +391,32 @@ static u8 nfit_dsm_revid(unsigned family, unsigned func)
+ 	return id;
+ }
+ 
++static int cmd_to_func(struct nfit_mem *nfit_mem, unsigned int cmd,
++		struct nd_cmd_pkg *call_pkg)
++{
++	if (call_pkg) {
++		int i;
++
++		if (nfit_mem->family != call_pkg->nd_family)
++			return -ENOTTY;
++
++		for (i = 0; i < ARRAY_SIZE(call_pkg->nd_reserved2); i++)
++			if (call_pkg->nd_reserved2[i])
++				return -EINVAL;
++		return call_pkg->nd_command;
++	}
++
++	/* Linux ND commands == NVDIMM_FAMILY_INTEL function numbers */
++	if (nfit_mem->family == NVDIMM_FAMILY_INTEL)
++		return cmd;
++
++	/*
++	 * Force function number validation to fail since 0 is never
++	 * published as a valid function in dsm_mask.
++	 */
++	return 0;
++}
++
+ int acpi_nfit_ctl(struct nvdimm_bus_descriptor *nd_desc, struct nvdimm *nvdimm,
+ 		unsigned int cmd, void *buf, unsigned int buf_len, int *cmd_rc)
+ {
+@@ -404,30 +430,23 @@ int acpi_nfit_ctl(struct nvdimm_bus_descriptor *nd_desc, struct nvdimm *nvdimm,
+ 	unsigned long cmd_mask, dsm_mask;
+ 	u32 offset, fw_status = 0;
+ 	acpi_handle handle;
+-	unsigned int func;
+ 	const guid_t *guid;
+-	int rc, i;
++	int func, rc, i;
+ 
+ 	if (cmd_rc)
+ 		*cmd_rc = -EINVAL;
+-	func = cmd;
+-	if (cmd == ND_CMD_CALL) {
+-		call_pkg = buf;
+-		func = call_pkg->nd_command;
+-
+-		for (i = 0; i < ARRAY_SIZE(call_pkg->nd_reserved2); i++)
+-			if (call_pkg->nd_reserved2[i])
+-				return -EINVAL;
+-	}
+ 
+ 	if (nvdimm) {
+ 		struct acpi_device *adev = nfit_mem->adev;
+ 
+ 		if (!adev)
+ 			return -ENOTTY;
+-		if (call_pkg && nfit_mem->family != call_pkg->nd_family)
+-			return -ENOTTY;
+ 
++		if (cmd == ND_CMD_CALL)
++			call_pkg = buf;
++		func = cmd_to_func(nfit_mem, cmd, call_pkg);
++		if (func < 0)
++			return func;
+ 		dimm_name = nvdimm_name(nvdimm);
+ 		cmd_name = nvdimm_cmd_name(cmd);
+ 		cmd_mask = nvdimm_cmd_mask(nvdimm);
+@@ -438,6 +457,7 @@ int acpi_nfit_ctl(struct nvdimm_bus_descriptor *nd_desc, struct nvdimm *nvdimm,
+ 	} else {
+ 		struct acpi_device *adev = to_acpi_dev(acpi_desc);
+ 
++		func = cmd;
+ 		cmd_name = nvdimm_bus_cmd_name(cmd);
+ 		cmd_mask = nd_desc->cmd_mask;
+ 		dsm_mask = cmd_mask;
+@@ -452,7 +472,13 @@ int acpi_nfit_ctl(struct nvdimm_bus_descriptor *nd_desc, struct nvdimm *nvdimm,
+ 	if (!desc || (cmd && (desc->out_num + desc->in_num == 0)))
+ 		return -ENOTTY;
+ 
+-	if (!test_bit(cmd, &cmd_mask) || !test_bit(func, &dsm_mask))
++	/*
++	 * Check for a valid command.  For ND_CMD_CALL, we also have to
++	 * make sure that the DSM function is supported.
++	 */
++	if (cmd == ND_CMD_CALL && !test_bit(func, &dsm_mask))
++		return -ENOTTY;
++	else if (!test_bit(cmd, &cmd_mask))
+ 		return -ENOTTY;
+ 
+ 	in_obj.type = ACPI_TYPE_PACKAGE;
+@@ -1764,6 +1790,13 @@ static int acpi_nfit_add_dimm(struct acpi_nfit_desc *acpi_desc,
+ 		return 0;
+ 	}
+ 
++	/*
++	 * Function 0 is the command interrogation function, don't
++	 * export it to potential userspace use, and enable it to be
++	 * used as an error value in acpi_nfit_ctl().
++	 */
++	dsm_mask &= ~1UL;
++
+ 	guid = to_nfit_uuid(nfit_mem->family);
+ 	for_each_set_bit(i, &dsm_mask, BITS_PER_LONG)
+ 		if (acpi_check_dsm(adev_dimm->handle, guid,
+diff --git a/drivers/char/mwave/mwavedd.c b/drivers/char/mwave/mwavedd.c
+index b5e3103c1175..e43c876a9223 100644
+--- a/drivers/char/mwave/mwavedd.c
++++ b/drivers/char/mwave/mwavedd.c
+@@ -59,6 +59,7 @@
+ #include <linux/mutex.h>
+ #include <linux/delay.h>
+ #include <linux/serial_8250.h>
++#include <linux/nospec.h>
+ #include "smapi.h"
+ #include "mwavedd.h"
+ #include "3780i.h"
+@@ -289,6 +290,8 @@ static long mwave_ioctl(struct file *file, unsigned int iocmd,
+ 						ipcnum);
+ 				return -EINVAL;
+ 			}
++			ipcnum = array_index_nospec(ipcnum,
++						    ARRAY_SIZE(pDrvData->IPCs));
+ 			PRINTK_3(TRACE_MWAVE,
+ 				"mwavedd::mwave_ioctl IOCTL_MW_REGISTER_IPC"
+ 				" ipcnum %x entry usIntCount %x\n",
+@@ -317,6 +320,8 @@ static long mwave_ioctl(struct file *file, unsigned int iocmd,
+ 						" Invalid ipcnum %x\n", ipcnum);
+ 				return -EINVAL;
+ 			}
++			ipcnum = array_index_nospec(ipcnum,
++						    ARRAY_SIZE(pDrvData->IPCs));
+ 			PRINTK_3(TRACE_MWAVE,
+ 				"mwavedd::mwave_ioctl IOCTL_MW_GET_IPC"
+ 				" ipcnum %x, usIntCount %x\n",
+@@ -383,6 +388,8 @@ static long mwave_ioctl(struct file *file, unsigned int iocmd,
+ 						ipcnum);
+ 				return -EINVAL;
+ 			}
++			ipcnum = array_index_nospec(ipcnum,
++						    ARRAY_SIZE(pDrvData->IPCs));
+ 			mutex_lock(&mwave_mutex);
+ 			if (pDrvData->IPCs[ipcnum].bIsEnabled == true) {
+ 				pDrvData->IPCs[ipcnum].bIsEnabled = false;
+diff --git a/drivers/clk/socfpga/clk-pll-s10.c b/drivers/clk/socfpga/clk-pll-s10.c
+index 2d5d8b43727e..c4d0b6f6abf2 100644
+--- a/drivers/clk/socfpga/clk-pll-s10.c
++++ b/drivers/clk/socfpga/clk-pll-s10.c
+@@ -43,7 +43,7 @@ static unsigned long clk_pll_recalc_rate(struct clk_hw *hwclk,
+ 	/* Read mdiv and fdiv from the fdbck register */
+ 	reg = readl(socfpgaclk->hw.reg + 0x4);
+ 	mdiv = (reg & SOCFPGA_PLL_MDIV_MASK) >> SOCFPGA_PLL_MDIV_SHIFT;
+-	vco_freq = (unsigned long long)parent_rate * (mdiv + 6);
++	vco_freq = (unsigned long long)vco_freq * (mdiv + 6);
+ 
+ 	return (unsigned long)vco_freq;
+ }
+diff --git a/drivers/clk/socfpga/clk-s10.c b/drivers/clk/socfpga/clk-s10.c
+index 5b238fc314ac..8281dfbf38c2 100644
+--- a/drivers/clk/socfpga/clk-s10.c
++++ b/drivers/clk/socfpga/clk-s10.c
+@@ -12,17 +12,17 @@
+ 
+ #include "stratix10-clk.h"
+ 
+-static const char * const pll_mux[] = { "osc1", "cb_intosc_hs_div2_clk",
+-					"f2s_free_clk",};
++static const char * const pll_mux[] = { "osc1", "cb-intosc-hs-div2-clk",
++					"f2s-free-clk",};
+ static const char * const cntr_mux[] = { "main_pll", "periph_pll",
+-					 "osc1", "cb_intosc_hs_div2_clk",
+-					 "f2s_free_clk"};
+-static const char * const boot_mux[] = { "osc1", "cb_intosc_hs_div2_clk",};
++					 "osc1", "cb-intosc-hs-div2-clk",
++					 "f2s-free-clk"};
++static const char * const boot_mux[] = { "osc1", "cb-intosc-hs-div2-clk",};
+ 
+ static const char * const noc_free_mux[] = {"main_noc_base_clk",
+ 					    "peri_noc_base_clk",
+-					    "osc1", "cb_intosc_hs_div2_clk",
+-					    "f2s_free_clk"};
++					    "osc1", "cb-intosc-hs-div2-clk",
++					    "f2s-free-clk"};
+ 
+ static const char * const emaca_free_mux[] = {"peri_emaca_clk", "boot_clk"};
+ static const char * const emacb_free_mux[] = {"peri_emacb_clk", "boot_clk"};
+@@ -33,14 +33,14 @@ static const char * const s2f_usr1_free_mux[] = {"peri_s2f_usr1_clk", "boot_clk"
+ static const char * const psi_ref_free_mux[] = {"peri_psi_ref_clk", "boot_clk"};
+ static const char * const mpu_mux[] = { "mpu_free_clk", "boot_clk",};
+ 
+-static const char * const s2f_usr0_mux[] = {"f2s_free_clk", "boot_clk"};
++static const char * const s2f_usr0_mux[] = {"f2s-free-clk", "boot_clk"};
+ static const char * const emac_mux[] = {"emaca_free_clk", "emacb_free_clk"};
+ static const char * const noc_mux[] = {"noc_free_clk", "boot_clk"};
+ 
+ static const char * const mpu_free_mux[] = {"main_mpu_base_clk",
+ 					    "peri_mpu_base_clk",
+-					    "osc1", "cb_intosc_hs_div2_clk",
+-					    "f2s_free_clk"};
++					    "osc1", "cb-intosc-hs-div2-clk",
++					    "f2s-free-clk"};
+ 
+ /* clocks in AO (always on) controller */
+ static const struct stratix10_pll_clock s10_pll_clks[] = {
+diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atpx_handler.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_atpx_handler.c
+index a028661d9e20..92b11de19581 100644
+--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atpx_handler.c
++++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atpx_handler.c
+@@ -576,6 +576,7 @@ static const struct amdgpu_px_quirk amdgpu_px_quirk_list[] = {
+ 	{ 0x1002, 0x6900, 0x1028, 0x0812, AMDGPU_PX_QUIRK_FORCE_ATPX },
+ 	{ 0x1002, 0x6900, 0x1028, 0x0813, AMDGPU_PX_QUIRK_FORCE_ATPX },
+ 	{ 0x1002, 0x6900, 0x1025, 0x125A, AMDGPU_PX_QUIRK_FORCE_ATPX },
++	{ 0x1002, 0x6900, 0x17AA, 0x3806, AMDGPU_PX_QUIRK_FORCE_ATPX },
+ 	{ 0, 0, 0, 0, 0 },
+ };
+ 
+diff --git a/drivers/gpu/drm/meson/meson_crtc.c b/drivers/gpu/drm/meson/meson_crtc.c
+index 191b314f9e9e..709475d5cc30 100644
+--- a/drivers/gpu/drm/meson/meson_crtc.c
++++ b/drivers/gpu/drm/meson/meson_crtc.c
+@@ -45,7 +45,6 @@ struct meson_crtc {
+ 	struct drm_crtc base;
+ 	struct drm_pending_vblank_event *event;
+ 	struct meson_drm *priv;
+-	bool enabled;
+ };
+ #define to_meson_crtc(x) container_of(x, struct meson_crtc, base)
+ 
+@@ -81,7 +80,8 @@ static const struct drm_crtc_funcs meson_crtc_funcs = {
+ 
+ };
+ 
+-static void meson_crtc_enable(struct drm_crtc *crtc)
++static void meson_crtc_atomic_enable(struct drm_crtc *crtc,
++				     struct drm_crtc_state *old_state)
+ {
+ 	struct meson_crtc *meson_crtc = to_meson_crtc(crtc);
+ 	struct drm_crtc_state *crtc_state = crtc->state;
+@@ -103,20 +103,6 @@ static void meson_crtc_enable(struct drm_crtc *crtc)
+ 
+ 	drm_crtc_vblank_on(crtc);
+ 
+-	meson_crtc->enabled = true;
+-}
+-
+-static void meson_crtc_atomic_enable(struct drm_crtc *crtc,
+-				     struct drm_crtc_state *old_state)
+-{
+-	struct meson_crtc *meson_crtc = to_meson_crtc(crtc);
+-	struct meson_drm *priv = meson_crtc->priv;
+-
+-	DRM_DEBUG_DRIVER("\n");
+-
+-	if (!meson_crtc->enabled)
+-		meson_crtc_enable(crtc);
+-
+ 	priv->viu.osd1_enabled = true;
+ }
+ 
+@@ -142,8 +128,6 @@ static void meson_crtc_atomic_disable(struct drm_crtc *crtc,
+ 
+ 		crtc->state->event = NULL;
+ 	}
+-
+-	meson_crtc->enabled = false;
+ }
+ 
+ static void meson_crtc_atomic_begin(struct drm_crtc *crtc,
+@@ -152,9 +136,6 @@ static void meson_crtc_atomic_begin(struct drm_crtc *crtc,
+ 	struct meson_crtc *meson_crtc = to_meson_crtc(crtc);
+ 	unsigned long flags;
+ 
+-	if (crtc->state->enable && !meson_crtc->enabled)
+-		meson_crtc_enable(crtc);
+-
+ 	if (crtc->state->event) {
+ 		WARN_ON(drm_crtc_vblank_get(crtc) != 0);
+ 
+diff --git a/drivers/gpu/drm/meson/meson_drv.c b/drivers/gpu/drm/meson/meson_drv.c
+index d3443125e661..bf5f294f172f 100644
+--- a/drivers/gpu/drm/meson/meson_drv.c
++++ b/drivers/gpu/drm/meson/meson_drv.c
+@@ -82,6 +82,10 @@ static const struct drm_mode_config_funcs meson_mode_config_funcs = {
+ 	.fb_create           = drm_gem_fb_create,
+ };
+ 
++static const struct drm_mode_config_helper_funcs meson_mode_config_helpers = {
++	.atomic_commit_tail = drm_atomic_helper_commit_tail_rpm,
++};
++
+ static irqreturn_t meson_irq(int irq, void *arg)
+ {
+ 	struct drm_device *dev = arg;
+@@ -246,6 +250,7 @@ static int meson_drv_bind_master(struct device *dev, bool has_components)
+ 	drm->mode_config.max_width = 3840;
+ 	drm->mode_config.max_height = 2160;
+ 	drm->mode_config.funcs = &meson_mode_config_funcs;
++	drm->mode_config.helper_private	= &meson_mode_config_helpers;
+ 
+ 	/* Hardware Initialization */
+ 
+diff --git a/drivers/hv/hv_balloon.c b/drivers/hv/hv_balloon.c
+index b1b788082793..d2a735ac9ba1 100644
+--- a/drivers/hv/hv_balloon.c
++++ b/drivers/hv/hv_balloon.c
+@@ -888,12 +888,14 @@ static unsigned long handle_pg_range(unsigned long pg_start,
+ 			pfn_cnt -= pgs_ol;
+ 			/*
+ 			 * Check if the corresponding memory block is already
+-			 * online by checking its last previously backed page.
+-			 * In case it is we need to bring rest (which was not
+-			 * backed previously) online too.
++			 * online. It is possible to observe struct pages still
++			 * being uninitialized here so check section instead.
++			 * In case the section is online we need to bring the
++			 * rest of pfns (which were not backed previously)
++			 * online too.
+ 			 */
+ 			if (start_pfn > has->start_pfn &&
+-			    !PageReserved(pfn_to_page(start_pfn - 1)))
++			    online_section_nr(pfn_to_section_nr(start_pfn)))
+ 				hv_bring_pgs_online(has, start_pfn, pgs_ol);
+ 
+ 		}
+diff --git a/drivers/hv/ring_buffer.c b/drivers/hv/ring_buffer.c
+index 3e90eb91db45..6cb45f256107 100644
+--- a/drivers/hv/ring_buffer.c
++++ b/drivers/hv/ring_buffer.c
+@@ -164,26 +164,25 @@ hv_get_ringbuffer_availbytes(const struct hv_ring_buffer_info *rbi,
+ }
+ 
+ /* Get various debug metrics for the specified ring buffer. */
+-void hv_ringbuffer_get_debuginfo(const struct hv_ring_buffer_info *ring_info,
+-				 struct hv_ring_buffer_debug_info *debug_info)
++int hv_ringbuffer_get_debuginfo(const struct hv_ring_buffer_info *ring_info,
++				struct hv_ring_buffer_debug_info *debug_info)
+ {
+ 	u32 bytes_avail_towrite;
+ 	u32 bytes_avail_toread;
+ 
+-	if (ring_info->ring_buffer) {
+-		hv_get_ringbuffer_availbytes(ring_info,
+-					&bytes_avail_toread,
+-					&bytes_avail_towrite);
+-
+-		debug_info->bytes_avail_toread = bytes_avail_toread;
+-		debug_info->bytes_avail_towrite = bytes_avail_towrite;
+-		debug_info->current_read_index =
+-			ring_info->ring_buffer->read_index;
+-		debug_info->current_write_index =
+-			ring_info->ring_buffer->write_index;
+-		debug_info->current_interrupt_mask =
+-			ring_info->ring_buffer->interrupt_mask;
+-	}
++	if (!ring_info->ring_buffer)
++		return -EINVAL;
++
++	hv_get_ringbuffer_availbytes(ring_info,
++				     &bytes_avail_toread,
++				     &bytes_avail_towrite);
++	debug_info->bytes_avail_toread = bytes_avail_toread;
++	debug_info->bytes_avail_towrite = bytes_avail_towrite;
++	debug_info->current_read_index = ring_info->ring_buffer->read_index;
++	debug_info->current_write_index = ring_info->ring_buffer->write_index;
++	debug_info->current_interrupt_mask
++		= ring_info->ring_buffer->interrupt_mask;
++	return 0;
+ }
+ EXPORT_SYMBOL_GPL(hv_ringbuffer_get_debuginfo);
+ 
+diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
+index 2c6d5c7a4445..9aa18f387a34 100644
+--- a/drivers/hv/vmbus_drv.c
++++ b/drivers/hv/vmbus_drv.c
+@@ -313,12 +313,16 @@ static ssize_t out_intr_mask_show(struct device *dev,
+ {
+ 	struct hv_device *hv_dev = device_to_hv_device(dev);
+ 	struct hv_ring_buffer_debug_info outbound;
++	int ret;
+ 
+ 	if (!hv_dev->channel)
+ 		return -ENODEV;
+-	if (hv_dev->channel->state != CHANNEL_OPENED_STATE)
+-		return -EINVAL;
+-	hv_ringbuffer_get_debuginfo(&hv_dev->channel->outbound, &outbound);
++
++	ret = hv_ringbuffer_get_debuginfo(&hv_dev->channel->outbound,
++					  &outbound);
++	if (ret < 0)
++		return ret;
++
+ 	return sprintf(buf, "%d\n", outbound.current_interrupt_mask);
+ }
+ static DEVICE_ATTR_RO(out_intr_mask);
+@@ -328,12 +332,15 @@ static ssize_t out_read_index_show(struct device *dev,
+ {
+ 	struct hv_device *hv_dev = device_to_hv_device(dev);
+ 	struct hv_ring_buffer_debug_info outbound;
++	int ret;
+ 
+ 	if (!hv_dev->channel)
+ 		return -ENODEV;
+-	if (hv_dev->channel->state != CHANNEL_OPENED_STATE)
+-		return -EINVAL;
+-	hv_ringbuffer_get_debuginfo(&hv_dev->channel->outbound, &outbound);
++
++	ret = hv_ringbuffer_get_debuginfo(&hv_dev->channel->outbound,
++					  &outbound);
++	if (ret < 0)
++		return ret;
+ 	return sprintf(buf, "%d\n", outbound.current_read_index);
+ }
+ static DEVICE_ATTR_RO(out_read_index);
+@@ -344,12 +351,15 @@ static ssize_t out_write_index_show(struct device *dev,
+ {
+ 	struct hv_device *hv_dev = device_to_hv_device(dev);
+ 	struct hv_ring_buffer_debug_info outbound;
++	int ret;
+ 
+ 	if (!hv_dev->channel)
+ 		return -ENODEV;
+-	if (hv_dev->channel->state != CHANNEL_OPENED_STATE)
+-		return -EINVAL;
+-	hv_ringbuffer_get_debuginfo(&hv_dev->channel->outbound, &outbound);
++
++	ret = hv_ringbuffer_get_debuginfo(&hv_dev->channel->outbound,
++					  &outbound);
++	if (ret < 0)
++		return ret;
+ 	return sprintf(buf, "%d\n", outbound.current_write_index);
+ }
+ static DEVICE_ATTR_RO(out_write_index);
+@@ -360,12 +370,15 @@ static ssize_t out_read_bytes_avail_show(struct device *dev,
+ {
+ 	struct hv_device *hv_dev = device_to_hv_device(dev);
+ 	struct hv_ring_buffer_debug_info outbound;
++	int ret;
+ 
+ 	if (!hv_dev->channel)
+ 		return -ENODEV;
+-	if (hv_dev->channel->state != CHANNEL_OPENED_STATE)
+-		return -EINVAL;
+-	hv_ringbuffer_get_debuginfo(&hv_dev->channel->outbound, &outbound);
++
++	ret = hv_ringbuffer_get_debuginfo(&hv_dev->channel->outbound,
++					  &outbound);
++	if (ret < 0)
++		return ret;
+ 	return sprintf(buf, "%d\n", outbound.bytes_avail_toread);
+ }
+ static DEVICE_ATTR_RO(out_read_bytes_avail);
+@@ -376,12 +389,15 @@ static ssize_t out_write_bytes_avail_show(struct device *dev,
+ {
+ 	struct hv_device *hv_dev = device_to_hv_device(dev);
+ 	struct hv_ring_buffer_debug_info outbound;
++	int ret;
+ 
+ 	if (!hv_dev->channel)
+ 		return -ENODEV;
+-	if (hv_dev->channel->state != CHANNEL_OPENED_STATE)
+-		return -EINVAL;
+-	hv_ringbuffer_get_debuginfo(&hv_dev->channel->outbound, &outbound);
++
++	ret = hv_ringbuffer_get_debuginfo(&hv_dev->channel->outbound,
++					  &outbound);
++	if (ret < 0)
++		return ret;
+ 	return sprintf(buf, "%d\n", outbound.bytes_avail_towrite);
+ }
+ static DEVICE_ATTR_RO(out_write_bytes_avail);
+@@ -391,12 +407,15 @@ static ssize_t in_intr_mask_show(struct device *dev,
+ {
+ 	struct hv_device *hv_dev = device_to_hv_device(dev);
+ 	struct hv_ring_buffer_debug_info inbound;
++	int ret;
+ 
+ 	if (!hv_dev->channel)
+ 		return -ENODEV;
+-	if (hv_dev->channel->state != CHANNEL_OPENED_STATE)
+-		return -EINVAL;
+-	hv_ringbuffer_get_debuginfo(&hv_dev->channel->inbound, &inbound);
++
++	ret = hv_ringbuffer_get_debuginfo(&hv_dev->channel->inbound, &inbound);
++	if (ret < 0)
++		return ret;
++
+ 	return sprintf(buf, "%d\n", inbound.current_interrupt_mask);
+ }
+ static DEVICE_ATTR_RO(in_intr_mask);
+@@ -406,12 +425,15 @@ static ssize_t in_read_index_show(struct device *dev,
+ {
+ 	struct hv_device *hv_dev = device_to_hv_device(dev);
+ 	struct hv_ring_buffer_debug_info inbound;
++	int ret;
+ 
+ 	if (!hv_dev->channel)
+ 		return -ENODEV;
+-	if (hv_dev->channel->state != CHANNEL_OPENED_STATE)
+-		return -EINVAL;
+-	hv_ringbuffer_get_debuginfo(&hv_dev->channel->inbound, &inbound);
++
++	ret = hv_ringbuffer_get_debuginfo(&hv_dev->channel->inbound, &inbound);
++	if (ret < 0)
++		return ret;
++
+ 	return sprintf(buf, "%d\n", inbound.current_read_index);
+ }
+ static DEVICE_ATTR_RO(in_read_index);
+@@ -421,12 +443,15 @@ static ssize_t in_write_index_show(struct device *dev,
+ {
+ 	struct hv_device *hv_dev = device_to_hv_device(dev);
+ 	struct hv_ring_buffer_debug_info inbound;
++	int ret;
+ 
+ 	if (!hv_dev->channel)
+ 		return -ENODEV;
+-	if (hv_dev->channel->state != CHANNEL_OPENED_STATE)
+-		return -EINVAL;
+-	hv_ringbuffer_get_debuginfo(&hv_dev->channel->inbound, &inbound);
++
++	ret = hv_ringbuffer_get_debuginfo(&hv_dev->channel->inbound, &inbound);
++	if (ret < 0)
++		return ret;
++
+ 	return sprintf(buf, "%d\n", inbound.current_write_index);
+ }
+ static DEVICE_ATTR_RO(in_write_index);
+@@ -437,12 +462,15 @@ static ssize_t in_read_bytes_avail_show(struct device *dev,
+ {
+ 	struct hv_device *hv_dev = device_to_hv_device(dev);
+ 	struct hv_ring_buffer_debug_info inbound;
++	int ret;
+ 
+ 	if (!hv_dev->channel)
+ 		return -ENODEV;
+-	if (hv_dev->channel->state != CHANNEL_OPENED_STATE)
+-		return -EINVAL;
+-	hv_ringbuffer_get_debuginfo(&hv_dev->channel->inbound, &inbound);
++
++	ret = hv_ringbuffer_get_debuginfo(&hv_dev->channel->inbound, &inbound);
++	if (ret < 0)
++		return ret;
++
+ 	return sprintf(buf, "%d\n", inbound.bytes_avail_toread);
+ }
+ static DEVICE_ATTR_RO(in_read_bytes_avail);
+@@ -453,12 +481,15 @@ static ssize_t in_write_bytes_avail_show(struct device *dev,
+ {
+ 	struct hv_device *hv_dev = device_to_hv_device(dev);
+ 	struct hv_ring_buffer_debug_info inbound;
++	int ret;
+ 
+ 	if (!hv_dev->channel)
+ 		return -ENODEV;
+-	if (hv_dev->channel->state != CHANNEL_OPENED_STATE)
+-		return -EINVAL;
+-	hv_ringbuffer_get_debuginfo(&hv_dev->channel->inbound, &inbound);
++
++	ret = hv_ringbuffer_get_debuginfo(&hv_dev->channel->inbound, &inbound);
++	if (ret < 0)
++		return ret;
++
+ 	return sprintf(buf, "%d\n", inbound.bytes_avail_towrite);
+ }
+ static DEVICE_ATTR_RO(in_write_bytes_avail);
+diff --git a/drivers/ide/ide-proc.c b/drivers/ide/ide-proc.c
+index 45c997430332..0e51803de0e7 100644
+--- a/drivers/ide/ide-proc.c
++++ b/drivers/ide/ide-proc.c
+@@ -544,7 +544,7 @@ void ide_proc_port_register_devices(ide_hwif_t *hwif)
+ 		drive->proc = proc_mkdir(drive->name, parent);
+ 		if (drive->proc) {
+ 			ide_add_proc_entries(drive->proc, generic_drive_entries, drive);
+-			proc_create_data("setting", S_IFREG|S_IRUSR|S_IWUSR,
++			proc_create_data("settings", S_IFREG|S_IRUSR|S_IWUSR,
+ 					drive->proc, &ide_settings_proc_fops,
+ 					drive);
+ 		}
+diff --git a/drivers/input/joystick/xpad.c b/drivers/input/joystick/xpad.c
+index cfc8b94527b9..aa4e431cbcd3 100644
+--- a/drivers/input/joystick/xpad.c
++++ b/drivers/input/joystick/xpad.c
+@@ -252,6 +252,8 @@ static const struct xpad_device {
+ 	{ 0x0f30, 0x0202, "Joytech Advanced Controller", 0, XTYPE_XBOX },
+ 	{ 0x0f30, 0x8888, "BigBen XBMiniPad Controller", 0, XTYPE_XBOX },
+ 	{ 0x102c, 0xff0c, "Joytech Wireless Advanced Controller", 0, XTYPE_XBOX },
++	{ 0x1038, 0x1430, "SteelSeries Stratus Duo", 0, XTYPE_XBOX360 },
++	{ 0x1038, 0x1431, "SteelSeries Stratus Duo", 0, XTYPE_XBOX360 },
+ 	{ 0x11c9, 0x55f0, "Nacon GC-100XF", 0, XTYPE_XBOX360 },
+ 	{ 0x12ab, 0x0004, "Honey Bee Xbox360 dancepad", MAP_DPAD_TO_BUTTONS, XTYPE_XBOX360 },
+ 	{ 0x12ab, 0x0301, "PDP AFTERGLOW AX.1", 0, XTYPE_XBOX360 },
+@@ -428,6 +430,7 @@ static const struct usb_device_id xpad_table[] = {
+ 	XPAD_XBOXONE_VENDOR(0x0e6f),		/* 0x0e6f X-Box One controllers */
+ 	XPAD_XBOX360_VENDOR(0x0f0d),		/* Hori Controllers */
+ 	XPAD_XBOXONE_VENDOR(0x0f0d),		/* Hori Controllers */
++	XPAD_XBOX360_VENDOR(0x1038),		/* SteelSeries Controllers */
+ 	XPAD_XBOX360_VENDOR(0x11c9),		/* Nacon GC100XF */
+ 	XPAD_XBOX360_VENDOR(0x12ab),		/* X-Box 360 dance pads */
+ 	XPAD_XBOX360_VENDOR(0x1430),		/* RedOctane X-Box 360 controllers */
+diff --git a/drivers/input/misc/uinput.c b/drivers/input/misc/uinput.c
+index 8ec483e8688b..26ec603fe220 100644
+--- a/drivers/input/misc/uinput.c
++++ b/drivers/input/misc/uinput.c
+@@ -39,6 +39,7 @@
+ #include <linux/init.h>
+ #include <linux/fs.h>
+ #include <linux/miscdevice.h>
++#include <linux/overflow.h>
+ #include <linux/input/mt.h>
+ #include "../input-compat.h"
+ 
+@@ -405,7 +406,7 @@ static int uinput_open(struct inode *inode, struct file *file)
+ static int uinput_validate_absinfo(struct input_dev *dev, unsigned int code,
+ 				   const struct input_absinfo *abs)
+ {
+-	int min, max;
++	int min, max, range;
+ 
+ 	min = abs->minimum;
+ 	max = abs->maximum;
+@@ -417,7 +418,7 @@ static int uinput_validate_absinfo(struct input_dev *dev, unsigned int code,
+ 		return -EINVAL;
+ 	}
+ 
+-	if (abs->flat > max - min) {
++	if (!check_sub_overflow(max, min, &range) && abs->flat > range) {
+ 		printk(KERN_DEBUG
+ 		       "%s: abs_flat #%02x out of range: %d (min:%d/max:%d)\n",
+ 		       UINPUT_NAME, code, abs->flat, min, max);
+diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
+index c2df341ff6fa..cf3abb8d284f 100644
+--- a/drivers/irqchip/irq-gic-v3-its.c
++++ b/drivers/irqchip/irq-gic-v3-its.c
+@@ -2267,13 +2267,14 @@ static void its_free_device(struct its_device *its_dev)
+ 	kfree(its_dev);
+ }
+ 
+-static int its_alloc_device_irq(struct its_device *dev, irq_hw_number_t *hwirq)
++static int its_alloc_device_irq(struct its_device *dev, int nvecs, irq_hw_number_t *hwirq)
+ {
+ 	int idx;
+ 
+-	idx = find_first_zero_bit(dev->event_map.lpi_map,
+-				  dev->event_map.nr_lpis);
+-	if (idx == dev->event_map.nr_lpis)
++	idx = bitmap_find_free_region(dev->event_map.lpi_map,
++				      dev->event_map.nr_lpis,
++				      get_count_order(nvecs));
++	if (idx < 0)
+ 		return -ENOSPC;
+ 
+ 	*hwirq = dev->event_map.lpi_base + idx;
+@@ -2369,21 +2370,21 @@ static int its_irq_domain_alloc(struct irq_domain *domain, unsigned int virq,
+ 	int err;
+ 	int i;
+ 
+-	for (i = 0; i < nr_irqs; i++) {
+-		err = its_alloc_device_irq(its_dev, &hwirq);
+-		if (err)
+-			return err;
++	err = its_alloc_device_irq(its_dev, nr_irqs, &hwirq);
++	if (err)
++		return err;
+ 
+-		err = its_irq_gic_domain_alloc(domain, virq + i, hwirq);
++	for (i = 0; i < nr_irqs; i++) {
++		err = its_irq_gic_domain_alloc(domain, virq + i, hwirq + i);
+ 		if (err)
+ 			return err;
+ 
+ 		irq_domain_set_hwirq_and_chip(domain, virq + i,
+-					      hwirq, &its_irq_chip, its_dev);
++					      hwirq + i, &its_irq_chip, its_dev);
+ 		irqd_set_single_target(irq_desc_get_irq_data(irq_to_desc(virq + i)));
+ 		pr_debug("ID:%d pID:%d vID:%d\n",
+-			 (int)(hwirq - its_dev->event_map.lpi_base),
+-			 (int) hwirq, virq + i);
++			 (int)(hwirq + i - its_dev->event_map.lpi_base),
++			 (int)(hwirq + i), virq + i);
+ 	}
+ 
+ 	return 0;
+diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
+index f2ec882f96be..5921ecc670c1 100644
+--- a/drivers/md/dm-crypt.c
++++ b/drivers/md/dm-crypt.c
+@@ -2405,9 +2405,21 @@ static int crypt_ctr_cipher_new(struct dm_target *ti, char *cipher_in, char *key
+ 	 * capi:cipher_api_spec-iv:ivopts
+ 	 */
+ 	tmp = &cipher_in[strlen("capi:")];
+-	cipher_api = strsep(&tmp, "-");
+-	*ivmode = strsep(&tmp, ":");
+-	*ivopts = tmp;
++
++	/* Separate IV options if present, it can contain another '-' in hash name */
++	*ivopts = strrchr(tmp, ':');
++	if (*ivopts) {
++		**ivopts = '\0';
++		(*ivopts)++;
++	}
++	/* Parse IV mode */
++	*ivmode = strrchr(tmp, '-');
++	if (*ivmode) {
++		**ivmode = '\0';
++		(*ivmode)++;
++	}
++	/* The rest is crypto API spec */
++	cipher_api = tmp;
+ 
+ 	if (*ivmode && !strcmp(*ivmode, "lmk"))
+ 		cc->tfms_count = 64;
+@@ -2477,11 +2489,8 @@ static int crypt_ctr_cipher_old(struct dm_target *ti, char *cipher_in, char *key
+ 		goto bad_mem;
+ 
+ 	chainmode = strsep(&tmp, "-");
+-	*ivopts = strsep(&tmp, "-");
+-	*ivmode = strsep(&*ivopts, ":");
+-
+-	if (tmp)
+-		DMWARN("Ignoring unexpected additional cipher options");
++	*ivmode = strsep(&tmp, ":");
++	*ivopts = tmp;
+ 
+ 	/*
+ 	 * For compatibility with the original dm-crypt mapping format, if
+diff --git a/drivers/md/dm-thin-metadata.c b/drivers/md/dm-thin-metadata.c
+index 20b0776e39ef..ed3caceaed07 100644
+--- a/drivers/md/dm-thin-metadata.c
++++ b/drivers/md/dm-thin-metadata.c
+@@ -1678,7 +1678,7 @@ int dm_thin_remove_range(struct dm_thin_device *td,
+ 	return r;
+ }
+ 
+-int dm_pool_block_is_used(struct dm_pool_metadata *pmd, dm_block_t b, bool *result)
++int dm_pool_block_is_shared(struct dm_pool_metadata *pmd, dm_block_t b, bool *result)
+ {
+ 	int r;
+ 	uint32_t ref_count;
+@@ -1686,7 +1686,7 @@ int dm_pool_block_is_used(struct dm_pool_metadata *pmd, dm_block_t b, bool *resu
+ 	down_read(&pmd->root_lock);
+ 	r = dm_sm_get_count(pmd->data_sm, b, &ref_count);
+ 	if (!r)
+-		*result = (ref_count != 0);
++		*result = (ref_count > 1);
+ 	up_read(&pmd->root_lock);
+ 
+ 	return r;
+diff --git a/drivers/md/dm-thin-metadata.h b/drivers/md/dm-thin-metadata.h
+index 35e954ea20a9..f6be0d733c20 100644
+--- a/drivers/md/dm-thin-metadata.h
++++ b/drivers/md/dm-thin-metadata.h
+@@ -195,7 +195,7 @@ int dm_pool_get_metadata_dev_size(struct dm_pool_metadata *pmd,
+ 
+ int dm_pool_get_data_dev_size(struct dm_pool_metadata *pmd, dm_block_t *result);
+ 
+-int dm_pool_block_is_used(struct dm_pool_metadata *pmd, dm_block_t b, bool *result);
++int dm_pool_block_is_shared(struct dm_pool_metadata *pmd, dm_block_t b, bool *result);
+ 
+ int dm_pool_inc_data_range(struct dm_pool_metadata *pmd, dm_block_t b, dm_block_t e);
+ int dm_pool_dec_data_range(struct dm_pool_metadata *pmd, dm_block_t b, dm_block_t e);
+diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
+index 1f225a1e08dd..c30a7850b2da 100644
+--- a/drivers/md/dm-thin.c
++++ b/drivers/md/dm-thin.c
+@@ -1048,7 +1048,7 @@ static void passdown_double_checking_shared_status(struct dm_thin_new_mapping *m
+ 	 * passdown we have to check that these blocks are now unused.
+ 	 */
+ 	int r = 0;
+-	bool used = true;
++	bool shared = true;
+ 	struct thin_c *tc = m->tc;
+ 	struct pool *pool = tc->pool;
+ 	dm_block_t b = m->data_block, e, end = m->data_block + m->virt_end - m->virt_begin;
+@@ -1058,11 +1058,11 @@ static void passdown_double_checking_shared_status(struct dm_thin_new_mapping *m
+ 	while (b != end) {
+ 		/* find start of unmapped run */
+ 		for (; b < end; b++) {
+-			r = dm_pool_block_is_used(pool->pmd, b, &used);
++			r = dm_pool_block_is_shared(pool->pmd, b, &shared);
+ 			if (r)
+ 				goto out;
+ 
+-			if (!used)
++			if (!shared)
+ 				break;
+ 		}
+ 
+@@ -1071,11 +1071,11 @@ static void passdown_double_checking_shared_status(struct dm_thin_new_mapping *m
+ 
+ 		/* find end of run */
+ 		for (e = b + 1; e != end; e++) {
+-			r = dm_pool_block_is_used(pool->pmd, e, &used);
++			r = dm_pool_block_is_shared(pool->pmd, e, &shared);
+ 			if (r)
+ 				goto out;
+ 
+-			if (used)
++			if (shared)
+ 				break;
+ 		}
+ 
+diff --git a/drivers/misc/ibmvmc.c b/drivers/misc/ibmvmc.c
+index b8aaa684c397..2ed23c99f59f 100644
+--- a/drivers/misc/ibmvmc.c
++++ b/drivers/misc/ibmvmc.c
+@@ -820,21 +820,24 @@ static int ibmvmc_send_msg(struct crq_server_adapter *adapter,
+  *
+  * Return:
+  *	0 - Success
++ *	Non-zero - Failure
+  */
+ static int ibmvmc_open(struct inode *inode, struct file *file)
+ {
+ 	struct ibmvmc_file_session *session;
+-	int rc = 0;
+ 
+ 	pr_debug("%s: inode = 0x%lx, file = 0x%lx, state = 0x%x\n", __func__,
+ 		 (unsigned long)inode, (unsigned long)file,
+ 		 ibmvmc.state);
+ 
+ 	session = kzalloc(sizeof(*session), GFP_KERNEL);
++	if (!session)
++		return -ENOMEM;
++
+ 	session->file = file;
+ 	file->private_data = session;
+ 
+-	return rc;
++	return 0;
+ }
+ 
+ /**
+diff --git a/drivers/misc/mei/hw-me-regs.h b/drivers/misc/mei/hw-me-regs.h
+index e4b10b2d1a08..23739a60517f 100644
+--- a/drivers/misc/mei/hw-me-regs.h
++++ b/drivers/misc/mei/hw-me-regs.h
+@@ -127,6 +127,8 @@
+ #define MEI_DEV_ID_BXT_M      0x1A9A  /* Broxton M */
+ #define MEI_DEV_ID_APL_I      0x5A9A  /* Apollo Lake I */
+ 
++#define MEI_DEV_ID_DNV_IE     0x19E5  /* Denverton IE */
++
+ #define MEI_DEV_ID_GLK        0x319A  /* Gemini Lake */
+ 
+ #define MEI_DEV_ID_KBP        0xA2BA  /* Kaby Point */
+diff --git a/drivers/misc/mei/pci-me.c b/drivers/misc/mei/pci-me.c
+index ea4e152270a3..c8e21c894a5f 100644
+--- a/drivers/misc/mei/pci-me.c
++++ b/drivers/misc/mei/pci-me.c
+@@ -88,11 +88,13 @@ static const struct pci_device_id mei_me_pci_tbl[] = {
+ 	{MEI_PCI_DEVICE(MEI_DEV_ID_SPT_2, MEI_ME_PCH8_CFG)},
+ 	{MEI_PCI_DEVICE(MEI_DEV_ID_SPT_H, MEI_ME_PCH8_SPS_CFG)},
+ 	{MEI_PCI_DEVICE(MEI_DEV_ID_SPT_H_2, MEI_ME_PCH8_SPS_CFG)},
+-	{MEI_PCI_DEVICE(MEI_DEV_ID_LBG, MEI_ME_PCH8_CFG)},
++	{MEI_PCI_DEVICE(MEI_DEV_ID_LBG, MEI_ME_PCH12_CFG)},
+ 
+ 	{MEI_PCI_DEVICE(MEI_DEV_ID_BXT_M, MEI_ME_PCH8_CFG)},
+ 	{MEI_PCI_DEVICE(MEI_DEV_ID_APL_I, MEI_ME_PCH8_CFG)},
+ 
++	{MEI_PCI_DEVICE(MEI_DEV_ID_DNV_IE, MEI_ME_PCH8_CFG)},
++
+ 	{MEI_PCI_DEVICE(MEI_DEV_ID_GLK, MEI_ME_PCH8_CFG)},
+ 
+ 	{MEI_PCI_DEVICE(MEI_DEV_ID_KBP, MEI_ME_PCH8_CFG)},
+diff --git a/drivers/mmc/host/dw_mmc-bluefield.c b/drivers/mmc/host/dw_mmc-bluefield.c
+index 54c3fbb4a391..db56d4f58aaa 100644
+--- a/drivers/mmc/host/dw_mmc-bluefield.c
++++ b/drivers/mmc/host/dw_mmc-bluefield.c
+@@ -1,11 +1,6 @@
+ // SPDX-License-Identifier: GPL-2.0
+ /*
+  * Copyright (C) 2018 Mellanox Technologies.
+- *
+- * This program is free software; you can redistribute it and/or modify
+- * it under the terms of the GNU General Public License as published by
+- * the Free Software Foundation; either version 2 of the License, or
+- * (at your option) any later version.
+  */
+ 
+ #include <linux/bitfield.h>
+diff --git a/drivers/mmc/host/meson-gx-mmc.c b/drivers/mmc/host/meson-gx-mmc.c
+index c201c378537e..ef9deaa361c7 100644
+--- a/drivers/mmc/host/meson-gx-mmc.c
++++ b/drivers/mmc/host/meson-gx-mmc.c
+@@ -174,6 +174,8 @@ struct meson_host {
+ 	struct sd_emmc_desc *descs;
+ 	dma_addr_t descs_dma_addr;
+ 
++	int irq;
++
+ 	bool vqmmc_enabled;
+ };
+ 
+@@ -1181,7 +1183,7 @@ static int meson_mmc_probe(struct platform_device *pdev)
+ 	struct resource *res;
+ 	struct meson_host *host;
+ 	struct mmc_host *mmc;
+-	int ret, irq;
++	int ret;
+ 
+ 	mmc = mmc_alloc_host(sizeof(struct meson_host), &pdev->dev);
+ 	if (!mmc)
+@@ -1228,8 +1230,8 @@ static int meson_mmc_probe(struct platform_device *pdev)
+ 		goto free_host;
+ 	}
+ 
+-	irq = platform_get_irq(pdev, 0);
+-	if (irq <= 0) {
++	host->irq = platform_get_irq(pdev, 0);
++	if (host->irq <= 0) {
+ 		dev_err(&pdev->dev, "failed to get interrupt resource.\n");
+ 		ret = -EINVAL;
+ 		goto free_host;
+@@ -1283,9 +1285,8 @@ static int meson_mmc_probe(struct platform_device *pdev)
+ 	writel(IRQ_CRC_ERR | IRQ_TIMEOUTS | IRQ_END_OF_CHAIN,
+ 	       host->regs + SD_EMMC_IRQ_EN);
+ 
+-	ret = devm_request_threaded_irq(&pdev->dev, irq, meson_mmc_irq,
+-					meson_mmc_irq_thread, IRQF_SHARED,
+-					NULL, host);
++	ret = request_threaded_irq(host->irq, meson_mmc_irq,
++			meson_mmc_irq_thread, IRQF_SHARED, NULL, host);
+ 	if (ret)
+ 		goto err_init_clk;
+ 
+@@ -1303,7 +1304,7 @@ static int meson_mmc_probe(struct platform_device *pdev)
+ 	if (host->bounce_buf == NULL) {
+ 		dev_err(host->dev, "Unable to map allocate DMA bounce buffer.\n");
+ 		ret = -ENOMEM;
+-		goto err_init_clk;
++		goto err_free_irq;
+ 	}
+ 
+ 	host->descs = dma_alloc_coherent(host->dev, SD_EMMC_DESC_BUF_LEN,
+@@ -1322,6 +1323,8 @@ static int meson_mmc_probe(struct platform_device *pdev)
+ err_bounce_buf:
+ 	dma_free_coherent(host->dev, host->bounce_buf_size,
+ 			  host->bounce_buf, host->bounce_dma_addr);
++err_free_irq:
++	free_irq(host->irq, host);
+ err_init_clk:
+ 	clk_disable_unprepare(host->mmc_clk);
+ err_core_clk:
+@@ -1339,6 +1342,7 @@ static int meson_mmc_remove(struct platform_device *pdev)
+ 
+ 	/* disable interrupts */
+ 	writel(0, host->regs + SD_EMMC_IRQ_EN);
++	free_irq(host->irq, host);
+ 
+ 	dma_free_coherent(host->dev, SD_EMMC_DESC_BUF_LEN,
+ 			  host->descs, host->descs_dma_addr);
+diff --git a/drivers/net/can/dev.c b/drivers/net/can/dev.c
+index 3b3f88ffab53..c05e4d50d43d 100644
+--- a/drivers/net/can/dev.c
++++ b/drivers/net/can/dev.c
+@@ -480,8 +480,6 @@ EXPORT_SYMBOL_GPL(can_put_echo_skb);
+ struct sk_buff *__can_get_echo_skb(struct net_device *dev, unsigned int idx, u8 *len_ptr)
+ {
+ 	struct can_priv *priv = netdev_priv(dev);
+-	struct sk_buff *skb = priv->echo_skb[idx];
+-	struct canfd_frame *cf;
+ 
+ 	if (idx >= priv->echo_skb_max) {
+ 		netdev_err(dev, "%s: BUG! Trying to access can_priv::echo_skb out of bounds (%u/max %u)\n",
+@@ -489,20 +487,21 @@ struct sk_buff *__can_get_echo_skb(struct net_device *dev, unsigned int idx, u8
+ 		return NULL;
+ 	}
+ 
+-	if (!skb) {
+-		netdev_err(dev, "%s: BUG! Trying to echo non existing skb: can_priv::echo_skb[%u]\n",
+-			   __func__, idx);
+-		return NULL;
+-	}
++	if (priv->echo_skb[idx]) {
++		/* Using "struct canfd_frame::len" for the frame
++		 * length is supported on both CAN and CANFD frames.
++		 */
++		struct sk_buff *skb = priv->echo_skb[idx];
++		struct canfd_frame *cf = (struct canfd_frame *)skb->data;
++		u8 len = cf->len;
+ 
+-	/* Using "struct canfd_frame::len" for the frame
+-	 * length is supported on both CAN and CANFD frames.
+-	 */
+-	cf = (struct canfd_frame *)skb->data;
+-	*len_ptr = cf->len;
+-	priv->echo_skb[idx] = NULL;
++		*len_ptr = len;
++		priv->echo_skb[idx] = NULL;
+ 
+-	return skb;
++		return skb;
++	}
++
++	return NULL;
+ }
+ 
+ /*
+diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c
+index 75ce11395ee8..ae219b8a7754 100644
+--- a/drivers/net/can/flexcan.c
++++ b/drivers/net/can/flexcan.c
+@@ -1004,7 +1004,7 @@ static int flexcan_chip_start(struct net_device *dev)
+ 		}
+ 	} else {
+ 		/* clear and invalidate unused mailboxes first */
+-		for (i = FLEXCAN_TX_MB_RESERVED_OFF_FIFO; i <= ARRAY_SIZE(regs->mb); i++) {
++		for (i = FLEXCAN_TX_MB_RESERVED_OFF_FIFO; i < ARRAY_SIZE(regs->mb); i++) {
+ 			priv->write(FLEXCAN_MB_CODE_RX_INACTIVE,
+ 				    &regs->mb[i].can_ctrl);
+ 		}
+diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-common.h b/drivers/net/ethernet/amd/xgbe/xgbe-common.h
+index d272dc6984ac..b40d4377cc71 100644
+--- a/drivers/net/ethernet/amd/xgbe/xgbe-common.h
++++ b/drivers/net/ethernet/amd/xgbe/xgbe-common.h
+@@ -431,8 +431,6 @@
+ #define MAC_MDIOSCAR_PA_WIDTH		5
+ #define MAC_MDIOSCAR_RA_INDEX		0
+ #define MAC_MDIOSCAR_RA_WIDTH		16
+-#define MAC_MDIOSCAR_REG_INDEX		0
+-#define MAC_MDIOSCAR_REG_WIDTH		21
+ #define MAC_MDIOSCCDR_BUSY_INDEX	22
+ #define MAC_MDIOSCCDR_BUSY_WIDTH	1
+ #define MAC_MDIOSCCDR_CMD_INDEX		16
+diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-dev.c b/drivers/net/ethernet/amd/xgbe/xgbe-dev.c
+index 1e929a1e4ca7..4666084eda16 100644
+--- a/drivers/net/ethernet/amd/xgbe/xgbe-dev.c
++++ b/drivers/net/ethernet/amd/xgbe/xgbe-dev.c
+@@ -1284,6 +1284,20 @@ static void xgbe_write_mmd_regs(struct xgbe_prv_data *pdata, int prtad,
+ 	}
+ }
+ 
++static unsigned int xgbe_create_mdio_sca(int port, int reg)
++{
++	unsigned int mdio_sca, da;
++
++	da = (reg & MII_ADDR_C45) ? reg >> 16 : 0;
++
++	mdio_sca = 0;
++	XGMAC_SET_BITS(mdio_sca, MAC_MDIOSCAR, RA, reg);
++	XGMAC_SET_BITS(mdio_sca, MAC_MDIOSCAR, PA, port);
++	XGMAC_SET_BITS(mdio_sca, MAC_MDIOSCAR, DA, da);
++
++	return mdio_sca;
++}
++
+ static int xgbe_write_ext_mii_regs(struct xgbe_prv_data *pdata, int addr,
+ 				   int reg, u16 val)
+ {
+@@ -1291,9 +1305,7 @@ static int xgbe_write_ext_mii_regs(struct xgbe_prv_data *pdata, int addr,
+ 
+ 	reinit_completion(&pdata->mdio_complete);
+ 
+-	mdio_sca = 0;
+-	XGMAC_SET_BITS(mdio_sca, MAC_MDIOSCAR, REG, reg);
+-	XGMAC_SET_BITS(mdio_sca, MAC_MDIOSCAR, DA, addr);
++	mdio_sca = xgbe_create_mdio_sca(addr, reg);
+ 	XGMAC_IOWRITE(pdata, MAC_MDIOSCAR, mdio_sca);
+ 
+ 	mdio_sccd = 0;
+@@ -1317,9 +1329,7 @@ static int xgbe_read_ext_mii_regs(struct xgbe_prv_data *pdata, int addr,
+ 
+ 	reinit_completion(&pdata->mdio_complete);
+ 
+-	mdio_sca = 0;
+-	XGMAC_SET_BITS(mdio_sca, MAC_MDIOSCAR, REG, reg);
+-	XGMAC_SET_BITS(mdio_sca, MAC_MDIOSCAR, DA, addr);
++	mdio_sca = xgbe_create_mdio_sca(addr, reg);
+ 	XGMAC_IOWRITE(pdata, MAC_MDIOSCAR, mdio_sca);
+ 
+ 	mdio_sccd = 0;
+diff --git a/drivers/net/ethernet/mellanox/mlxsw/pci.c b/drivers/net/ethernet/mellanox/mlxsw/pci.c
+index 5890fdfd62c3..c7901a3f2a79 100644
+--- a/drivers/net/ethernet/mellanox/mlxsw/pci.c
++++ b/drivers/net/ethernet/mellanox/mlxsw/pci.c
+@@ -604,29 +604,31 @@ static void mlxsw_pci_cq_tasklet(unsigned long data)
+ 		u16 wqe_counter = mlxsw_pci_cqe_wqe_counter_get(cqe);
+ 		u8 sendq = mlxsw_pci_cqe_sr_get(q->u.cq.v, cqe);
+ 		u8 dqn = mlxsw_pci_cqe_dqn_get(q->u.cq.v, cqe);
++		char ncqe[MLXSW_PCI_CQE_SIZE_MAX];
++
++		memcpy(ncqe, cqe, q->elem_size);
++		mlxsw_pci_queue_doorbell_consumer_ring(mlxsw_pci, q);
+ 
+ 		if (sendq) {
+ 			struct mlxsw_pci_queue *sdq;
+ 
+ 			sdq = mlxsw_pci_sdq_get(mlxsw_pci, dqn);
+ 			mlxsw_pci_cqe_sdq_handle(mlxsw_pci, sdq,
+-						 wqe_counter, cqe);
++						 wqe_counter, ncqe);
+ 			q->u.cq.comp_sdq_count++;
+ 		} else {
+ 			struct mlxsw_pci_queue *rdq;
+ 
+ 			rdq = mlxsw_pci_rdq_get(mlxsw_pci, dqn);
+ 			mlxsw_pci_cqe_rdq_handle(mlxsw_pci, rdq,
+-						 wqe_counter, q->u.cq.v, cqe);
++						 wqe_counter, q->u.cq.v, ncqe);
+ 			q->u.cq.comp_rdq_count++;
+ 		}
+ 		if (++items == credits)
+ 			break;
+ 	}
+-	if (items) {
+-		mlxsw_pci_queue_doorbell_consumer_ring(mlxsw_pci, q);
++	if (items)
+ 		mlxsw_pci_queue_doorbell_arm_consumer_ring(mlxsw_pci, q);
+-	}
+ }
+ 
+ static u16 mlxsw_pci_cq_elem_count(const struct mlxsw_pci_queue *q)
+diff --git a/drivers/net/ethernet/mellanox/mlxsw/pci_hw.h b/drivers/net/ethernet/mellanox/mlxsw/pci_hw.h
+index 83f452b7ccbb..72cdaa01d56d 100644
+--- a/drivers/net/ethernet/mellanox/mlxsw/pci_hw.h
++++ b/drivers/net/ethernet/mellanox/mlxsw/pci_hw.h
+@@ -27,7 +27,7 @@
+ 
+ #define MLXSW_PCI_SW_RESET			0xF0010
+ #define MLXSW_PCI_SW_RESET_RST_BIT		BIT(0)
+-#define MLXSW_PCI_SW_RESET_TIMEOUT_MSECS	5000
++#define MLXSW_PCI_SW_RESET_TIMEOUT_MSECS	13000
+ #define MLXSW_PCI_SW_RESET_WAIT_MSECS		100
+ #define MLXSW_PCI_FW_READY			0xA1844
+ #define MLXSW_PCI_FW_READY_MASK			0xFFFF
+@@ -53,6 +53,7 @@
+ #define MLXSW_PCI_WQE_SIZE	32 /* 32 bytes per element */
+ #define MLXSW_PCI_CQE01_SIZE	16 /* 16 bytes per element */
+ #define MLXSW_PCI_CQE2_SIZE	32 /* 32 bytes per element */
++#define MLXSW_PCI_CQE_SIZE_MAX	MLXSW_PCI_CQE2_SIZE
+ #define MLXSW_PCI_EQE_SIZE	16 /* 16 bytes per element */
+ #define MLXSW_PCI_WQE_COUNT	(MLXSW_PCI_AQ_SIZE / MLXSW_PCI_WQE_SIZE)
+ #define MLXSW_PCI_CQE01_COUNT	(MLXSW_PCI_AQ_SIZE / MLXSW_PCI_CQE01_SIZE)
+diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_fid.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_fid.c
+index 715d24ff937e..562c4429eec7 100644
+--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_fid.c
++++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_fid.c
+@@ -696,8 +696,8 @@ static const struct mlxsw_sp_fid_ops mlxsw_sp_fid_dummy_ops = {
+ static const struct mlxsw_sp_fid_family mlxsw_sp_fid_dummy_family = {
+ 	.type			= MLXSW_SP_FID_TYPE_DUMMY,
+ 	.fid_size		= sizeof(struct mlxsw_sp_fid),
+-	.start_index		= MLXSW_SP_RFID_BASE - 1,
+-	.end_index		= MLXSW_SP_RFID_BASE - 1,
++	.start_index		= VLAN_N_VID - 1,
++	.end_index		= VLAN_N_VID - 1,
+ 	.ops			= &mlxsw_sp_fid_dummy_ops,
+ };
+ 
+diff --git a/drivers/net/ethernet/sun/cassini.c b/drivers/net/ethernet/sun/cassini.c
+index 9020b084b953..7ec4eb74fe21 100644
+--- a/drivers/net/ethernet/sun/cassini.c
++++ b/drivers/net/ethernet/sun/cassini.c
+@@ -1,22 +1,9 @@
+-// SPDX-License-Identifier: GPL-2.0
++// SPDX-License-Identifier: GPL-2.0+
+ /* cassini.c: Sun Microsystems Cassini(+) ethernet driver.
+  *
+  * Copyright (C) 2004 Sun Microsystems Inc.
+  * Copyright (C) 2003 Adrian Sun (asun@×××××××××××××.com)
+  *
+- * This program is free software; you can redistribute it and/or
+- * modify it under the terms of the GNU General Public License as
+- * published by the Free Software Foundation; either version 2 of the
+- * License, or (at your option) any later version.
+- *
+- * This program is distributed in the hope that it will be useful,
+- * but WITHOUT ANY WARRANTY; without even the implied warranty of
+- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+- * GNU General Public License for more details.
+- *
+- * You should have received a copy of the GNU General Public License
+- * along with this program; if not, see <http://www.gnu.org/licenses/>.
+- *
+  * This driver uses the sungem driver (c) David Miller
+  * (davem@××××××.com) as its basis.
+  *
+diff --git a/drivers/net/ethernet/sun/cassini.h b/drivers/net/ethernet/sun/cassini.h
+index 13f3860496a8..ae5f05f03f88 100644
+--- a/drivers/net/ethernet/sun/cassini.h
++++ b/drivers/net/ethernet/sun/cassini.h
+@@ -1,23 +1,10 @@
+-/* SPDX-License-Identifier: GPL-2.0 */
++/* SPDX-License-Identifier: GPL-2.0+ */
+ /* $Id: cassini.h,v 1.16 2004/08/17 21:15:16 zaumen Exp $
+  * cassini.h: Definitions for Sun Microsystems Cassini(+) ethernet driver.
+  *
+  * Copyright (C) 2004 Sun Microsystems Inc.
+  * Copyright (c) 2003 Adrian Sun (asun@×××××××××××××.com)
+  *
+- * This program is free software; you can redistribute it and/or
+- * modify it under the terms of the GNU General Public License as
+- * published by the Free Software Foundation; either version 2 of the
+- * License, or (at your option) any later version.
+- *
+- * This program is distributed in the hope that it will be useful,
+- * but WITHOUT ANY WARRANTY; without even the implied warranty of
+- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+- * GNU General Public License for more details.
+- *
+- * You should have received a copy of the GNU General Public License
+- * along with this program; if not, see <http://www.gnu.org/licenses/>.
+- *
+  * vendor id: 0x108E (Sun Microsystems, Inc.)
+  * device id: 0xabba (Cassini)
+  * revision ids: 0x01 = Cassini
+diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c
+index f7c69ca34056..d71be15c8c69 100644
+--- a/drivers/net/phy/marvell.c
++++ b/drivers/net/phy/marvell.c
+@@ -1063,6 +1063,39 @@ static int m88e1145_config_init(struct phy_device *phydev)
+ 	return 0;
+ }
+ 
++/* The VOD can be out of specification on link up. Poke an
++ * undocumented register, in an undocumented page, with a magic value
++ * to fix this.
++ */
++static int m88e6390_errata(struct phy_device *phydev)
++{
++	int err;
++
++	err = phy_write(phydev, MII_BMCR,
++			BMCR_ANENABLE | BMCR_SPEED1000 | BMCR_FULLDPLX);
++	if (err)
++		return err;
++
++	usleep_range(300, 400);
++
++	err = phy_write_paged(phydev, 0xf8, 0x08, 0x36);
++	if (err)
++		return err;
++
++	return genphy_soft_reset(phydev);
++}
++
++static int m88e6390_config_aneg(struct phy_device *phydev)
++{
++	int err;
++
++	err = m88e6390_errata(phydev);
++	if (err)
++		return err;
++
++	return m88e1510_config_aneg(phydev);
++}
++
+ /**
+  * fiber_lpa_to_ethtool_lpa_t
+  * @lpa: value of the MII_LPA register for fiber link
+@@ -1418,7 +1451,7 @@ static int m88e1318_set_wol(struct phy_device *phydev,
+ 		 * before enabling it if !phy_interrupt_is_valid()
+ 		 */
+ 		if (!phy_interrupt_is_valid(phydev))
+-			phy_read(phydev, MII_M1011_IEVENT);
++			__phy_read(phydev, MII_M1011_IEVENT);
+ 
+ 		/* Enable the WOL interrupt */
+ 		err = __phy_modify(phydev, MII_88E1318S_PHY_CSIER, 0,
+@@ -2313,7 +2346,7 @@ static struct phy_driver marvell_drivers[] = {
+ 		.flags = PHY_HAS_INTERRUPT,
+ 		.probe = m88e6390_probe,
+ 		.config_init = &marvell_config_init,
+-		.config_aneg = &m88e1510_config_aneg,
++		.config_aneg = &m88e6390_config_aneg,
+ 		.read_status = &marvell_read_status,
+ 		.ack_interrupt = &marvell_ack_interrupt,
+ 		.config_intr = &marvell_config_intr,
+diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c
+index 98f4b1f706df..15c5586d74ff 100644
+--- a/drivers/net/phy/mdio_bus.c
++++ b/drivers/net/phy/mdio_bus.c
+@@ -391,6 +391,7 @@ int __mdiobus_register(struct mii_bus *bus, struct module *owner)
+ 	if (IS_ERR(gpiod)) {
+ 		dev_err(&bus->dev, "mii_bus %s couldn't get reset GPIO\n",
+ 			bus->id);
++		device_del(&bus->dev);
+ 		return PTR_ERR(gpiod);
+ 	} else	if (gpiod) {
+ 		bus->reset_gpiod = gpiod;
+diff --git a/drivers/net/ppp/pppoe.c b/drivers/net/ppp/pppoe.c
+index 62dc564b251d..f22639f0116a 100644
+--- a/drivers/net/ppp/pppoe.c
++++ b/drivers/net/ppp/pppoe.c
+@@ -445,6 +445,7 @@ static int pppoe_rcv(struct sk_buff *skb, struct net_device *dev,
+ 	if (pskb_trim_rcsum(skb, len))
+ 		goto drop;
+ 
++	ph = pppoe_hdr(skb);
+ 	pn = pppoe_pernet(dev_net(dev));
+ 
+ 	/* Note that get_item does a sock_hold(), so sk_pppox(po)
+diff --git a/drivers/nvme/target/rdma.c b/drivers/nvme/target/rdma.c
+index e57f3902beb3..08f997a390d5 100644
+--- a/drivers/nvme/target/rdma.c
++++ b/drivers/nvme/target/rdma.c
+@@ -139,6 +139,10 @@ static void nvmet_rdma_recv_done(struct ib_cq *cq, struct ib_wc *wc);
+ static void nvmet_rdma_read_data_done(struct ib_cq *cq, struct ib_wc *wc);
+ static void nvmet_rdma_qp_event(struct ib_event *event, void *priv);
+ static void nvmet_rdma_queue_disconnect(struct nvmet_rdma_queue *queue);
++static void nvmet_rdma_free_rsp(struct nvmet_rdma_device *ndev,
++				struct nvmet_rdma_rsp *r);
++static int nvmet_rdma_alloc_rsp(struct nvmet_rdma_device *ndev,
++				struct nvmet_rdma_rsp *r);
+ 
+ static const struct nvmet_fabrics_ops nvmet_rdma_ops;
+ 
+@@ -182,9 +186,17 @@ nvmet_rdma_get_rsp(struct nvmet_rdma_queue *queue)
+ 	spin_unlock_irqrestore(&queue->rsps_lock, flags);
+ 
+ 	if (unlikely(!rsp)) {
+-		rsp = kmalloc(sizeof(*rsp), GFP_KERNEL);
++		int ret;
++
++		rsp = kzalloc(sizeof(*rsp), GFP_KERNEL);
+ 		if (unlikely(!rsp))
+ 			return NULL;
++		ret = nvmet_rdma_alloc_rsp(queue->dev, rsp);
++		if (unlikely(ret)) {
++			kfree(rsp);
++			return NULL;
++		}
++
+ 		rsp->allocated = true;
+ 	}
+ 
+@@ -196,7 +208,8 @@ nvmet_rdma_put_rsp(struct nvmet_rdma_rsp *rsp)
+ {
+ 	unsigned long flags;
+ 
+-	if (rsp->allocated) {
++	if (unlikely(rsp->allocated)) {
++		nvmet_rdma_free_rsp(rsp->queue->dev, rsp);
+ 		kfree(rsp);
+ 		return;
+ 	}
+diff --git a/drivers/s390/char/sclp_config.c b/drivers/s390/char/sclp_config.c
+index 194ffd5c8580..039b2074db7e 100644
+--- a/drivers/s390/char/sclp_config.c
++++ b/drivers/s390/char/sclp_config.c
+@@ -60,7 +60,9 @@ static void sclp_cpu_capability_notify(struct work_struct *work)
+ 
+ static void __ref sclp_cpu_change_notify(struct work_struct *work)
+ {
++	lock_device_hotplug();
+ 	smp_rescan_cpus();
++	unlock_device_hotplug();
+ }
+ 
+ static void sclp_conf_receiver_fn(struct evbuf_header *evbuf)
+diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
+index 0b81d9d03357..12ddb5928a73 100644
+--- a/drivers/scsi/ufs/ufshcd.c
++++ b/drivers/scsi/ufs/ufshcd.c
+@@ -109,13 +109,19 @@
+ int ufshcd_dump_regs(struct ufs_hba *hba, size_t offset, size_t len,
+ 		     const char *prefix)
+ {
+-	u8 *regs;
++	u32 *regs;
++	size_t pos;
++
++	if (offset % 4 != 0 || len % 4 != 0) /* keep readl happy */
++		return -EINVAL;
+ 
+ 	regs = kzalloc(len, GFP_KERNEL);
+ 	if (!regs)
+ 		return -ENOMEM;
+ 
+-	memcpy_fromio(regs, hba->mmio_base + offset, len);
++	for (pos = 0; pos < len; pos += 4)
++		regs[pos / 4] = ufshcd_readl(hba, offset + pos);
++
+ 	ufshcd_hex_dump(prefix, regs, len);
+ 	kfree(regs);
+ 
+diff --git a/drivers/staging/rtl8188eu/os_dep/usb_intf.c b/drivers/staging/rtl8188eu/os_dep/usb_intf.c
+index 28cbd6b3d26c..dfee6985efa6 100644
+--- a/drivers/staging/rtl8188eu/os_dep/usb_intf.c
++++ b/drivers/staging/rtl8188eu/os_dep/usb_intf.c
+@@ -35,6 +35,7 @@ static const struct usb_device_id rtw_usb_id_tbl[] = {
+ 	{USB_DEVICE(0x2001, 0x330F)}, /* DLink DWA-125 REV D1 */
+ 	{USB_DEVICE(0x2001, 0x3310)}, /* Dlink DWA-123 REV D1 */
+ 	{USB_DEVICE(0x2001, 0x3311)}, /* DLink GO-USB-N150 REV B1 */
++	{USB_DEVICE(0x2001, 0x331B)}, /* D-Link DWA-121 rev B1 */
+ 	{USB_DEVICE(0x2357, 0x010c)}, /* TP-Link TL-WN722N v2 */
+ 	{USB_DEVICE(0x0df6, 0x0076)}, /* Sitecom N150 v2 */
+ 	{USB_DEVICE(USB_VENDER_ID_REALTEK, 0xffef)}, /* Rosewill RNX-N150NUB */
+diff --git a/drivers/tty/n_hdlc.c b/drivers/tty/n_hdlc.c
+index dabb391909aa..bb63519db7ae 100644
+--- a/drivers/tty/n_hdlc.c
++++ b/drivers/tty/n_hdlc.c
+@@ -597,6 +597,7 @@ static ssize_t n_hdlc_tty_read(struct tty_struct *tty, struct file *file,
+ 				/* too large for caller's buffer */
+ 				ret = -EOVERFLOW;
+ 			} else {
++				__set_current_state(TASK_RUNNING);
+ 				if (copy_to_user(buf, rbuf->buf, rbuf->count))
+ 					ret = -EFAULT;
+ 				else
+diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
+index ad126f51d549..7fe679413188 100644
+--- a/drivers/tty/serial/serial_core.c
++++ b/drivers/tty/serial/serial_core.c
+@@ -550,10 +550,12 @@ static int uart_put_char(struct tty_struct *tty, unsigned char c)
+ 	int ret = 0;
+ 
+ 	circ = &state->xmit;
+-	if (!circ->buf)
++	port = uart_port_lock(state, flags);
++	if (!circ->buf) {
++		uart_port_unlock(port, flags);
+ 		return 0;
++	}
+ 
+-	port = uart_port_lock(state, flags);
+ 	if (port && uart_circ_chars_free(circ) != 0) {
+ 		circ->buf[circ->head] = c;
+ 		circ->head = (circ->head + 1) & (UART_XMIT_SIZE - 1);
+@@ -586,11 +588,13 @@ static int uart_write(struct tty_struct *tty,
+ 		return -EL3HLT;
+ 	}
+ 
++	port = uart_port_lock(state, flags);
+ 	circ = &state->xmit;
+-	if (!circ->buf)
++	if (!circ->buf) {
++		uart_port_unlock(port, flags);
+ 		return 0;
++	}
+ 
+-	port = uart_port_lock(state, flags);
+ 	while (port) {
+ 		c = CIRC_SPACE_TO_END(circ->head, circ->tail, UART_XMIT_SIZE);
+ 		if (count < c)
+diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
+index 052ec16a4e84..e7d192ebecd7 100644
+--- a/drivers/tty/tty_io.c
++++ b/drivers/tty/tty_io.c
+@@ -2188,7 +2188,8 @@ static int tiocsti(struct tty_struct *tty, char __user *p)
+ 	ld = tty_ldisc_ref_wait(tty);
+ 	if (!ld)
+ 		return -EIO;
+-	ld->ops->receive_buf(tty, &ch, &mbz, 1);
++	if (ld->ops->receive_buf)
++		ld->ops->receive_buf(tty, &ch, &mbz, 1);
+ 	tty_ldisc_deref(ld);
+ 	return 0;
+ }
+diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
+index 476ec4b1b86c..da335899527b 100644
+--- a/drivers/tty/vt/vt.c
++++ b/drivers/tty/vt/vt.c
+@@ -1275,6 +1275,7 @@ static int vc_do_resize(struct tty_struct *tty, struct vc_data *vc,
+ 	if (con_is_visible(vc))
+ 		update_screen(vc);
+ 	vt_event_post(VT_EVENT_RESIZE, vc->vc_num, vc->vc_num);
++	notify_update(vc);
+ 	return err;
+ }
+ 
+@@ -2767,8 +2768,8 @@ rescan_last_byte:
+ 	con_flush(vc, draw_from, draw_to, &draw_x);
+ 	vc_uniscr_debug_check(vc);
+ 	console_conditional_schedule();
+-	console_unlock();
+ 	notify_update(vc);
++	console_unlock();
+ 	return n;
+ }
+ 
+@@ -2887,8 +2888,7 @@ static void vt_console_print(struct console *co, const char *b, unsigned count)
+ 	unsigned char c;
+ 	static DEFINE_SPINLOCK(printing_lock);
+ 	const ushort *start;
+-	ushort cnt = 0;
+-	ushort myx;
++	ushort start_x, cnt;
+ 	int kmsg_console;
+ 
+ 	/* console busy or not yet initialized */
+@@ -2901,10 +2901,6 @@ static void vt_console_print(struct console *co, const char *b, unsigned count)
+ 	if (kmsg_console && vc_cons_allocated(kmsg_console - 1))
+ 		vc = vc_cons[kmsg_console - 1].d;
+ 
+-	/* read `x' only after setting currcons properly (otherwise
+-	   the `x' macro will read the x of the foreground console). */
+-	myx = vc->vc_x;
+-
+ 	if (!vc_cons_allocated(fg_console)) {
+ 		/* impossible */
+ 		/* printk("vt_console_print: tty %d not allocated ??\n", currcons+1); */
+@@ -2919,53 +2915,41 @@ static void vt_console_print(struct console *co, const char *b, unsigned count)
+ 		hide_cursor(vc);
+ 
+ 	start = (ushort *)vc->vc_pos;
+-
+-	/* Contrived structure to try to emulate original need_wrap behaviour
+-	 * Problems caused when we have need_wrap set on '\n' character */
++	start_x = vc->vc_x;
++	cnt = 0;
+ 	while (count--) {
+ 		c = *b++;
+ 		if (c == 10 || c == 13 || c == 8 || vc->vc_need_wrap) {
+-			if (cnt > 0) {
+-				if (con_is_visible(vc))
+-					vc->vc_sw->con_putcs(vc, start, cnt, vc->vc_y, vc->vc_x);
+-				vc->vc_x += cnt;
+-				if (vc->vc_need_wrap)
+-					vc->vc_x--;
+-				cnt = 0;
+-			}
++			if (cnt && con_is_visible(vc))
++				vc->vc_sw->con_putcs(vc, start, cnt, vc->vc_y, start_x);
++			cnt = 0;
+ 			if (c == 8) {		/* backspace */
+ 				bs(vc);
+ 				start = (ushort *)vc->vc_pos;
+-				myx = vc->vc_x;
++				start_x = vc->vc_x;
+ 				continue;
+ 			}
+ 			if (c != 13)
+ 				lf(vc);
+ 			cr(vc);
+ 			start = (ushort *)vc->vc_pos;
+-			myx = vc->vc_x;
++			start_x = vc->vc_x;
+ 			if (c == 10 || c == 13)
+ 				continue;
+ 		}
++		vc_uniscr_putc(vc, c);
+ 		scr_writew((vc->vc_attr << 8) + c, (unsigned short *)vc->vc_pos);
+ 		notify_write(vc, c);
+ 		cnt++;
+-		if (myx == vc->vc_cols - 1) {
+-			vc->vc_need_wrap = 1;
+-			continue;
+-		}
+-		vc->vc_pos += 2;
+-		myx++;
+-	}
+-	if (cnt > 0) {
+-		if (con_is_visible(vc))
+-			vc->vc_sw->con_putcs(vc, start, cnt, vc->vc_y, vc->vc_x);
+-		vc->vc_x += cnt;
+-		if (vc->vc_x == vc->vc_cols) {
+-			vc->vc_x--;
++		if (vc->vc_x == vc->vc_cols - 1) {
+ 			vc->vc_need_wrap = 1;
++		} else {
++			vc->vc_pos += 2;
++			vc->vc_x++;
+ 		}
+ 	}
++	if (cnt && con_is_visible(vc))
++		vc->vc_sw->con_putcs(vc, start, cnt, vc->vc_y, start_x);
+ 	set_cursor(vc);
+ 	notify_update(vc);
+ 
+diff --git a/drivers/usb/core/ledtrig-usbport.c b/drivers/usb/core/ledtrig-usbport.c
+index dc7f7fd71684..c12ac56606c3 100644
+--- a/drivers/usb/core/ledtrig-usbport.c
++++ b/drivers/usb/core/ledtrig-usbport.c
+@@ -119,11 +119,6 @@ static const struct attribute_group ports_group = {
+ 	.attrs = ports_attrs,
+ };
+ 
+-static const struct attribute_group *ports_groups[] = {
+-	&ports_group,
+-	NULL
+-};
+-
+ /***************************************
+  * Adding & removing ports
+  ***************************************/
+@@ -307,6 +302,7 @@ static int usbport_trig_notify(struct notifier_block *nb, unsigned long action,
+ static int usbport_trig_activate(struct led_classdev *led_cdev)
+ {
+ 	struct usbport_trig_data *usbport_data;
++	int err;
+ 
+ 	usbport_data = kzalloc(sizeof(*usbport_data), GFP_KERNEL);
+ 	if (!usbport_data)
+@@ -315,6 +311,9 @@ static int usbport_trig_activate(struct led_classdev *led_cdev)
+ 
+ 	/* List of ports */
+ 	INIT_LIST_HEAD(&usbport_data->ports);
++	err = sysfs_create_group(&led_cdev->dev->kobj, &ports_group);
++	if (err)
++		goto err_free;
+ 	usb_for_each_dev(usbport_data, usbport_trig_add_usb_dev_ports);
+ 	usbport_trig_update_count(usbport_data);
+ 
+@@ -322,8 +321,11 @@ static int usbport_trig_activate(struct led_classdev *led_cdev)
+ 	usbport_data->nb.notifier_call = usbport_trig_notify;
+ 	led_set_trigger_data(led_cdev, usbport_data);
+ 	usb_register_notify(&usbport_data->nb);
+-
+ 	return 0;
++
++err_free:
++	kfree(usbport_data);
++	return err;
+ }
+ 
+ static void usbport_trig_deactivate(struct led_classdev *led_cdev)
+@@ -335,6 +337,8 @@ static void usbport_trig_deactivate(struct led_classdev *led_cdev)
+ 		usbport_trig_remove_port(usbport_data, port);
+ 	}
+ 
++	sysfs_remove_group(&led_cdev->dev->kobj, &ports_group);
++
+ 	usb_unregister_notify(&usbport_data->nb);
+ 
+ 	kfree(usbport_data);
+@@ -344,7 +348,6 @@ static struct led_trigger usbport_led_trigger = {
+ 	.name     = "usbport",
+ 	.activate = usbport_trig_activate,
+ 	.deactivate = usbport_trig_deactivate,
+-	.groups = ports_groups,
+ };
+ 
+ static int __init usbport_trig_init(void)
+diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
+index 558949b826d0..d8bf9307901e 100644
+--- a/drivers/usb/dwc3/gadget.c
++++ b/drivers/usb/dwc3/gadget.c
+@@ -177,6 +177,8 @@ static void dwc3_gadget_del_and_unmap_request(struct dwc3_ep *dep,
+ 	req->started = false;
+ 	list_del(&req->list);
+ 	req->remaining = 0;
++	req->unaligned = false;
++	req->zero = false;
+ 
+ 	if (req->request.status == -EINPROGRESS)
+ 		req->request.status = status;
+diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c
+index d5b38f096698..5a6df6e9ad57 100644
+--- a/drivers/usb/serial/pl2303.c
++++ b/drivers/usb/serial/pl2303.c
+@@ -46,6 +46,7 @@ static const struct usb_device_id id_table[] = {
+ 	{ USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_HCR331) },
+ 	{ USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_MOTOROLA) },
+ 	{ USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_ZTEK) },
++	{ USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_TB) },
+ 	{ USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID) },
+ 	{ USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID_RSAQ5) },
+ 	{ USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID),
+diff --git a/drivers/usb/serial/pl2303.h b/drivers/usb/serial/pl2303.h
+index 4e2554d55362..559941ca884d 100644
+--- a/drivers/usb/serial/pl2303.h
++++ b/drivers/usb/serial/pl2303.h
+@@ -8,6 +8,7 @@
+ 
+ #define PL2303_VENDOR_ID	0x067b
+ #define PL2303_PRODUCT_ID	0x2303
++#define PL2303_PRODUCT_ID_TB		0x2304
+ #define PL2303_PRODUCT_ID_RSAQ2		0x04bb
+ #define PL2303_PRODUCT_ID_DCU11		0x1234
+ #define PL2303_PRODUCT_ID_PHAROS	0xaaa0
+@@ -20,6 +21,7 @@
+ #define PL2303_PRODUCT_ID_MOTOROLA	0x0307
+ #define PL2303_PRODUCT_ID_ZTEK		0xe1f1
+ 
++
+ #define ATEN_VENDOR_ID		0x0557
+ #define ATEN_VENDOR_ID2		0x0547
+ #define ATEN_PRODUCT_ID		0x2008
+diff --git a/drivers/usb/serial/usb-serial-simple.c b/drivers/usb/serial/usb-serial-simple.c
+index 4d0273508043..edbbb13d6de6 100644
+--- a/drivers/usb/serial/usb-serial-simple.c
++++ b/drivers/usb/serial/usb-serial-simple.c
+@@ -85,7 +85,8 @@ DEVICE(moto_modem, MOTO_IDS);
+ /* Motorola Tetra driver */
+ #define MOTOROLA_TETRA_IDS()			\
+ 	{ USB_DEVICE(0x0cad, 0x9011) },	/* Motorola Solutions TETRA PEI */ \
+-	{ USB_DEVICE(0x0cad, 0x9012) }	/* MTP6550 */
++	{ USB_DEVICE(0x0cad, 0x9012) },	/* MTP6550 */ \
++	{ USB_DEVICE(0x0cad, 0x9016) }	/* TPG2200 */
+ DEVICE(motorola_tetra, MOTOROLA_TETRA_IDS);
+ 
+ /* Novatel Wireless GPS driver */
+diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
+index 4e656f89cb22..a86aa65ad66d 100644
+--- a/drivers/vhost/net.c
++++ b/drivers/vhost/net.c
+@@ -1024,7 +1024,8 @@ static void handle_rx(struct vhost_net *net)
+ 		if (nvq->done_idx > VHOST_NET_BATCH)
+ 			vhost_net_signal_used(nvq);
+ 		if (unlikely(vq_log))
+-			vhost_log_write(vq, vq_log, log, vhost_len);
++			vhost_log_write(vq, vq_log, log, vhost_len,
++					vq->iov, in);
+ 		total_len += vhost_len;
+ 		if (unlikely(vhost_exceeds_weight(++recv_pkts, total_len))) {
+ 			vhost_poll_queue(&vq->poll);
+diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
+index 55e5aa662ad5..c66fc8308b5e 100644
+--- a/drivers/vhost/vhost.c
++++ b/drivers/vhost/vhost.c
+@@ -1733,13 +1733,87 @@ static int log_write(void __user *log_base,
+ 	return r;
+ }
+ 
++static int log_write_hva(struct vhost_virtqueue *vq, u64 hva, u64 len)
++{
++	struct vhost_umem *umem = vq->umem;
++	struct vhost_umem_node *u;
++	u64 start, end, l, min;
++	int r;
++	bool hit = false;
++
++	while (len) {
++		min = len;
++		/* More than one GPAs can be mapped into a single HVA. So
++		 * iterate all possible umems here to be safe.
++		 */
++		list_for_each_entry(u, &umem->umem_list, link) {
++			if (u->userspace_addr > hva - 1 + len ||
++			    u->userspace_addr - 1 + u->size < hva)
++				continue;
++			start = max(u->userspace_addr, hva);
++			end = min(u->userspace_addr - 1 + u->size,
++				  hva - 1 + len);
++			l = end - start + 1;
++			r = log_write(vq->log_base,
++				      u->start + start - u->userspace_addr,
++				      l);
++			if (r < 0)
++				return r;
++			hit = true;
++			min = min(l, min);
++		}
++
++		if (!hit)
++			return -EFAULT;
++
++		len -= min;
++		hva += min;
++	}
++
++	return 0;
++}
++
++static int log_used(struct vhost_virtqueue *vq, u64 used_offset, u64 len)
++{
++	struct iovec iov[64];
++	int i, ret;
++
++	if (!vq->iotlb)
++		return log_write(vq->log_base, vq->log_addr + used_offset, len);
++
++	ret = translate_desc(vq, (uintptr_t)vq->used + used_offset,
++			     len, iov, 64, VHOST_ACCESS_WO);
++	if (ret)
++		return ret;
++
++	for (i = 0; i < ret; i++) {
++		ret = log_write_hva(vq,	(uintptr_t)iov[i].iov_base,
++				    iov[i].iov_len);
++		if (ret)
++			return ret;
++	}
++
++	return 0;
++}
++
+ int vhost_log_write(struct vhost_virtqueue *vq, struct vhost_log *log,
+-		    unsigned int log_num, u64 len)
++		    unsigned int log_num, u64 len, struct iovec *iov, int count)
+ {
+ 	int i, r;
+ 
+ 	/* Make sure data written is seen before log. */
+ 	smp_wmb();
++
++	if (vq->iotlb) {
++		for (i = 0; i < count; i++) {
++			r = log_write_hva(vq, (uintptr_t)iov[i].iov_base,
++					  iov[i].iov_len);
++			if (r < 0)
++				return r;
++		}
++		return 0;
++	}
++
+ 	for (i = 0; i < log_num; ++i) {
+ 		u64 l = min(log[i].len, len);
+ 		r = log_write(vq->log_base, log[i].addr, l);
+@@ -1769,9 +1843,8 @@ static int vhost_update_used_flags(struct vhost_virtqueue *vq)
+ 		smp_wmb();
+ 		/* Log used flag write. */
+ 		used = &vq->used->flags;
+-		log_write(vq->log_base, vq->log_addr +
+-			  (used - (void __user *)vq->used),
+-			  sizeof vq->used->flags);
++		log_used(vq, (used - (void __user *)vq->used),
++			 sizeof vq->used->flags);
+ 		if (vq->log_ctx)
+ 			eventfd_signal(vq->log_ctx, 1);
+ 	}
+@@ -1789,9 +1862,8 @@ static int vhost_update_avail_event(struct vhost_virtqueue *vq, u16 avail_event)
+ 		smp_wmb();
+ 		/* Log avail event write */
+ 		used = vhost_avail_event(vq);
+-		log_write(vq->log_base, vq->log_addr +
+-			  (used - (void __user *)vq->used),
+-			  sizeof *vhost_avail_event(vq));
++		log_used(vq, (used - (void __user *)vq->used),
++			 sizeof *vhost_avail_event(vq));
+ 		if (vq->log_ctx)
+ 			eventfd_signal(vq->log_ctx, 1);
+ 	}
+@@ -2191,10 +2263,8 @@ static int __vhost_add_used_n(struct vhost_virtqueue *vq,
+ 		/* Make sure data is seen before log. */
+ 		smp_wmb();
+ 		/* Log used ring entry write. */
+-		log_write(vq->log_base,
+-			  vq->log_addr +
+-			   ((void __user *)used - (void __user *)vq->used),
+-			  count * sizeof *used);
++		log_used(vq, ((void __user *)used - (void __user *)vq->used),
++			 count * sizeof *used);
+ 	}
+ 	old = vq->last_used_idx;
+ 	new = (vq->last_used_idx += count);
+@@ -2236,9 +2306,8 @@ int vhost_add_used_n(struct vhost_virtqueue *vq, struct vring_used_elem *heads,
+ 		/* Make sure used idx is seen before log. */
+ 		smp_wmb();
+ 		/* Log used index update. */
+-		log_write(vq->log_base,
+-			  vq->log_addr + offsetof(struct vring_used, idx),
+-			  sizeof vq->used->idx);
++		log_used(vq, offsetof(struct vring_used, idx),
++			 sizeof vq->used->idx);
+ 		if (vq->log_ctx)
+ 			eventfd_signal(vq->log_ctx, 1);
+ 	}
+diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h
+index 466ef7542291..1b675dad5e05 100644
+--- a/drivers/vhost/vhost.h
++++ b/drivers/vhost/vhost.h
+@@ -205,7 +205,8 @@ bool vhost_vq_avail_empty(struct vhost_dev *, struct vhost_virtqueue *);
+ bool vhost_enable_notify(struct vhost_dev *, struct vhost_virtqueue *);
+ 
+ int vhost_log_write(struct vhost_virtqueue *vq, struct vhost_log *log,
+-		    unsigned int log_num, u64 len);
++		    unsigned int log_num, u64 len,
++		    struct iovec *iov, int count);
+ int vq_iotlb_prefetch(struct vhost_virtqueue *vq);
+ 
+ struct vhost_msg_node *vhost_new_msg(struct vhost_virtqueue *vq, int type);
+diff --git a/drivers/video/console/vgacon.c b/drivers/video/console/vgacon.c
+index 09731b2f6815..c6b3bdbbdbc9 100644
+--- a/drivers/video/console/vgacon.c
++++ b/drivers/video/console/vgacon.c
+@@ -271,6 +271,7 @@ static void vgacon_scrollback_update(struct vc_data *c, int t, int count)
+ 
+ static void vgacon_restore_screen(struct vc_data *c)
+ {
++	c->vc_origin = c->vc_visible_origin;
+ 	vgacon_scrollback_cur->save = 0;
+ 
+ 	if (!vga_is_gfx && !vgacon_scrollback_cur->restore) {
+@@ -287,8 +288,7 @@ static void vgacon_scrolldelta(struct vc_data *c, int lines)
+ 	int start, end, count, soff;
+ 
+ 	if (!lines) {
+-		c->vc_visible_origin = c->vc_origin;
+-		vga_set_mem_top(c);
++		vgacon_restore_screen(c);
+ 		return;
+ 	}
+ 
+@@ -298,6 +298,7 @@ static void vgacon_scrolldelta(struct vc_data *c, int lines)
+ 	if (!vgacon_scrollback_cur->save) {
+ 		vgacon_cursor(c, CM_ERASE);
+ 		vgacon_save_screen(c);
++		c->vc_origin = (unsigned long)c->vc_screenbuf;
+ 		vgacon_scrollback_cur->save = 1;
+ 	}
+ 
+@@ -335,7 +336,7 @@ static void vgacon_scrolldelta(struct vc_data *c, int lines)
+ 		int copysize;
+ 
+ 		int diff = c->vc_rows - count;
+-		void *d = (void *) c->vc_origin;
++		void *d = (void *) c->vc_visible_origin;
+ 		void *s = (void *) c->vc_screenbuf;
+ 
+ 		count *= c->vc_size_row;
+diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
+index eadffaa39f4e..c7542e8dd096 100644
+--- a/fs/ceph/caps.c
++++ b/fs/ceph/caps.c
+@@ -1030,6 +1030,8 @@ static void drop_inode_snap_realm(struct ceph_inode_info *ci)
+ 	list_del_init(&ci->i_snap_realm_item);
+ 	ci->i_snap_realm_counter++;
+ 	ci->i_snap_realm = NULL;
++	if (realm->ino == ci->i_vino.ino)
++		realm->inode = NULL;
+ 	spin_unlock(&realm->inodes_with_caps_lock);
+ 	ceph_put_snap_realm(ceph_sb_to_client(ci->vfs_inode.i_sb)->mdsc,
+ 			    realm);
+diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
+index 5657b79dbc99..269471c8f42b 100644
+--- a/fs/cifs/cifssmb.c
++++ b/fs/cifs/cifssmb.c
+@@ -1458,18 +1458,26 @@ cifs_discard_remaining_data(struct TCP_Server_Info *server)
+ }
+ 
+ static int
+-cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid)
++__cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid,
++		     bool malformed)
+ {
+ 	int length;
+-	struct cifs_readdata *rdata = mid->callback_data;
+ 
+ 	length = cifs_discard_remaining_data(server);
+-	dequeue_mid(mid, rdata->result);
++	dequeue_mid(mid, malformed);
+ 	mid->resp_buf = server->smallbuf;
+ 	server->smallbuf = NULL;
+ 	return length;
+ }
+ 
++static int
++cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid)
++{
++	struct cifs_readdata *rdata = mid->callback_data;
++
++	return  __cifs_readv_discard(server, mid, rdata->result);
++}
++
+ int
+ cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid)
+ {
+@@ -1511,12 +1519,23 @@ cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid)
+ 		return -1;
+ 	}
+ 
++	/* set up first two iov for signature check and to get credits */
++	rdata->iov[0].iov_base = buf;
++	rdata->iov[0].iov_len = 4;
++	rdata->iov[1].iov_base = buf + 4;
++	rdata->iov[1].iov_len = server->total_read - 4;
++	cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n",
++		 rdata->iov[0].iov_base, rdata->iov[0].iov_len);
++	cifs_dbg(FYI, "1: iov_base=%p iov_len=%zu\n",
++		 rdata->iov[1].iov_base, rdata->iov[1].iov_len);
++
+ 	/* Was the SMB read successful? */
+ 	rdata->result = server->ops->map_error(buf, false);
+ 	if (rdata->result != 0) {
+ 		cifs_dbg(FYI, "%s: server returned error %d\n",
+ 			 __func__, rdata->result);
+-		return cifs_readv_discard(server, mid);
++		/* normal error on read response */
++		return __cifs_readv_discard(server, mid, false);
+ 	}
+ 
+ 	/* Is there enough to get to the rest of the READ_RSP header? */
+@@ -1560,14 +1579,6 @@ cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid)
+ 		server->total_read += length;
+ 	}
+ 
+-	/* set up first iov for signature check */
+-	rdata->iov[0].iov_base = buf;
+-	rdata->iov[0].iov_len = 4;
+-	rdata->iov[1].iov_base = buf + 4;
+-	rdata->iov[1].iov_len = server->total_read - 4;
+-	cifs_dbg(FYI, "0: iov_base=%p iov_len=%u\n",
+-		 rdata->iov[0].iov_base, server->total_read);
+-
+ 	/* how much data is in the response? */
+ #ifdef CONFIG_CIFS_SMB_DIRECT
+ 	use_rdma_mr = rdata->mr;
+diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
+index 52d71b64c0c6..d0bba175117c 100644
+--- a/fs/cifs/connect.c
++++ b/fs/cifs/connect.c
+@@ -533,6 +533,21 @@ server_unresponsive(struct TCP_Server_Info *server)
+ 	return false;
+ }
+ 
++static inline bool
++zero_credits(struct TCP_Server_Info *server)
++{
++	int val;
++
++	spin_lock(&server->req_lock);
++	val = server->credits + server->echo_credits + server->oplock_credits;
++	if (server->in_flight == 0 && val == 0) {
++		spin_unlock(&server->req_lock);
++		return true;
++	}
++	spin_unlock(&server->req_lock);
++	return false;
++}
++
+ static int
+ cifs_readv_from_socket(struct TCP_Server_Info *server, struct msghdr *smb_msg)
+ {
+@@ -545,6 +560,12 @@ cifs_readv_from_socket(struct TCP_Server_Info *server, struct msghdr *smb_msg)
+ 	for (total_read = 0; msg_data_left(smb_msg); total_read += length) {
+ 		try_to_freeze();
+ 
++		/* reconnect if no credits and no requests in flight */
++		if (zero_credits(server)) {
++			cifs_reconnect(server);
++			return -ECONNABORTED;
++		}
++
+ 		if (server_unresponsive(server))
+ 			return -ECONNABORTED;
+ 		if (cifs_rdma_enabled(server) && server->smbd_conn)
+diff --git a/fs/cifs/smb2misc.c b/fs/cifs/smb2misc.c
+index 6a9c47541c53..7b8b58fb4d3f 100644
+--- a/fs/cifs/smb2misc.c
++++ b/fs/cifs/smb2misc.c
+@@ -648,6 +648,13 @@ smb2_is_valid_oplock_break(char *buffer, struct TCP_Server_Info *server)
+ 	if (rsp->sync_hdr.Command != SMB2_OPLOCK_BREAK)
+ 		return false;
+ 
++	if (rsp->sync_hdr.CreditRequest) {
++		spin_lock(&server->req_lock);
++		server->credits += le16_to_cpu(rsp->sync_hdr.CreditRequest);
++		spin_unlock(&server->req_lock);
++		wake_up(&server->request_q);
++	}
++
+ 	if (rsp->StructureSize !=
+ 				smb2_rsp_struct_sizes[SMB2_OPLOCK_BREAK_HE]) {
+ 		if (le16_to_cpu(rsp->StructureSize) == 44)
+diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
+index f44bb4a304e9..237d7281ada3 100644
+--- a/fs/cifs/smb2ops.c
++++ b/fs/cifs/smb2ops.c
+@@ -34,6 +34,7 @@
+ #include "cifs_ioctl.h"
+ #include "smbdirect.h"
+ 
++/* Change credits for different ops and return the total number of credits */
+ static int
+ change_conf(struct TCP_Server_Info *server)
+ {
+@@ -41,17 +42,15 @@ change_conf(struct TCP_Server_Info *server)
+ 	server->oplock_credits = server->echo_credits = 0;
+ 	switch (server->credits) {
+ 	case 0:
+-		return -1;
++		return 0;
+ 	case 1:
+ 		server->echoes = false;
+ 		server->oplocks = false;
+-		cifs_dbg(VFS, "disabling echoes and oplocks\n");
+ 		break;
+ 	case 2:
+ 		server->echoes = true;
+ 		server->oplocks = false;
+ 		server->echo_credits = 1;
+-		cifs_dbg(FYI, "disabling oplocks\n");
+ 		break;
+ 	default:
+ 		server->echoes = true;
+@@ -64,14 +63,15 @@ change_conf(struct TCP_Server_Info *server)
+ 		server->echo_credits = 1;
+ 	}
+ 	server->credits -= server->echo_credits + server->oplock_credits;
+-	return 0;
++	return server->credits + server->echo_credits + server->oplock_credits;
+ }
+ 
+ static void
+ smb2_add_credits(struct TCP_Server_Info *server, const unsigned int add,
+ 		 const int optype)
+ {
+-	int *val, rc = 0;
++	int *val, rc = -1;
++
+ 	spin_lock(&server->req_lock);
+ 	val = server->ops->get_credits_field(server, optype);
+ 	*val += add;
+@@ -95,8 +95,26 @@ smb2_add_credits(struct TCP_Server_Info *server, const unsigned int add,
+ 	}
+ 	spin_unlock(&server->req_lock);
+ 	wake_up(&server->request_q);
+-	if (rc)
+-		cifs_reconnect(server);
++
++	if (server->tcpStatus == CifsNeedReconnect)
++		return;
++
++	switch (rc) {
++	case -1:
++		/* change_conf hasn't been executed */
++		break;
++	case 0:
++		cifs_dbg(VFS, "Possible client or server bug - zero credits\n");
++		break;
++	case 1:
++		cifs_dbg(VFS, "disabling echoes and oplocks\n");
++		break;
++	case 2:
++		cifs_dbg(FYI, "disabling oplocks\n");
++		break;
++	default:
++		cifs_dbg(FYI, "add %u credits total=%d\n", add, rc);
++	}
+ }
+ 
+ static void
+@@ -154,14 +172,14 @@ smb2_wait_mtu_credits(struct TCP_Server_Info *server, unsigned int size,
+ 
+ 			scredits = server->credits;
+ 			/* can deadlock with reopen */
+-			if (scredits == 1) {
++			if (scredits <= 8) {
+ 				*num = SMB2_MAX_BUFFER_SIZE;
+ 				*credits = 0;
+ 				break;
+ 			}
+ 
+-			/* leave one credit for a possible reopen */
+-			scredits--;
++			/* leave some credits for reopen and other ops */
++			scredits -= 8;
+ 			*num = min_t(unsigned int, size,
+ 				     scredits * SMB2_MAX_BUFFER_SIZE);
+ 
+@@ -2901,11 +2919,23 @@ handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid,
+ 			server->ops->is_status_pending(buf, server, 0))
+ 		return -1;
+ 
+-	rdata->result = server->ops->map_error(buf, false);
++	/* set up first two iov to get credits */
++	rdata->iov[0].iov_base = buf;
++	rdata->iov[0].iov_len = 4;
++	rdata->iov[1].iov_base = buf + 4;
++	rdata->iov[1].iov_len =
++		min_t(unsigned int, buf_len, server->vals->read_rsp_size) - 4;
++	cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n",
++		 rdata->iov[0].iov_base, rdata->iov[0].iov_len);
++	cifs_dbg(FYI, "1: iov_base=%p iov_len=%zu\n",
++		 rdata->iov[1].iov_base, rdata->iov[1].iov_len);
++
++	rdata->result = server->ops->map_error(buf, true);
+ 	if (rdata->result != 0) {
+ 		cifs_dbg(FYI, "%s: server returned error %d\n",
+ 			 __func__, rdata->result);
+-		dequeue_mid(mid, rdata->result);
++		/* normal error on read response */
++		dequeue_mid(mid, false);
+ 		return 0;
+ 	}
+ 
+@@ -2978,14 +3008,6 @@ handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid,
+ 		return 0;
+ 	}
+ 
+-	/* set up first iov for signature check */
+-	rdata->iov[0].iov_base = buf;
+-	rdata->iov[0].iov_len = 4;
+-	rdata->iov[1].iov_base = buf + 4;
+-	rdata->iov[1].iov_len = server->vals->read_rsp_size - 4;
+-	cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n",
+-		 rdata->iov[0].iov_base, server->vals->read_rsp_size);
+-
+ 	length = rdata->copy_into_pages(server, rdata, &iter);
+ 
+ 	kfree(bvec);
+diff --git a/fs/notify/inotify/inotify_user.c b/fs/notify/inotify/inotify_user.c
+index ac6978d3208c..780bba695453 100644
+--- a/fs/notify/inotify/inotify_user.c
++++ b/fs/notify/inotify/inotify_user.c
+@@ -724,8 +724,10 @@ SYSCALL_DEFINE3(inotify_add_watch, int, fd, const char __user *, pathname,
+ 		return -EBADF;
+ 
+ 	/* IN_MASK_ADD and IN_MASK_CREATE don't make sense together */
+-	if (unlikely((mask & IN_MASK_ADD) && (mask & IN_MASK_CREATE)))
+-		return -EINVAL;
++	if (unlikely((mask & IN_MASK_ADD) && (mask & IN_MASK_CREATE))) {
++		ret = -EINVAL;
++		goto fput_and_out;
++	}
+ 
+ 	/* verify that this is indeed an inotify instance */
+ 	if (unlikely(f.file->f_op != &inotify_fops)) {
+diff --git a/include/linux/bpf_verifier.h b/include/linux/bpf_verifier.h
+index 1fd6fa822d2c..91393724e933 100644
+--- a/include/linux/bpf_verifier.h
++++ b/include/linux/bpf_verifier.h
+@@ -134,6 +134,7 @@ struct bpf_verifier_state {
+ 	struct bpf_func_state *frame[MAX_CALL_FRAMES];
+ 	struct bpf_verifier_state *parent;
+ 	u32 curframe;
++	bool speculative;
+ };
+ 
+ /* linked list of verifier states used to prune search */
+@@ -142,15 +143,25 @@ struct bpf_verifier_state_list {
+ 	struct bpf_verifier_state_list *next;
+ };
+ 
++/* Possible states for alu_state member. */
++#define BPF_ALU_SANITIZE_SRC		1U
++#define BPF_ALU_SANITIZE_DST		2U
++#define BPF_ALU_NEG_VALUE		(1U << 2)
++#define BPF_ALU_NON_POINTER		(1U << 3)
++#define BPF_ALU_SANITIZE		(BPF_ALU_SANITIZE_SRC | \
++					 BPF_ALU_SANITIZE_DST)
++
+ struct bpf_insn_aux_data {
+ 	union {
+ 		enum bpf_reg_type ptr_type;	/* pointer type for load/store insns */
+ 		unsigned long map_state;	/* pointer/poison value for maps */
+ 		s32 call_imm;			/* saved imm field of call insn */
++		u32 alu_limit;			/* limit for add/sub register with pointer */
+ 	};
+ 	int ctx_field_size; /* the ctx field size for load insn, maybe 0 */
+ 	int sanitize_stack_off; /* stack slot to be cleared */
+ 	bool seen; /* this insn was processed by the verifier */
++	u8 alu_state; /* used in combination with alu_limit */
+ };
+ 
+ #define MAX_USED_MAPS 64 /* max number of maps accessed by one eBPF program */
+@@ -186,6 +197,8 @@ struct bpf_subprog_info {
+  * one verifier_env per bpf_check() call
+  */
+ struct bpf_verifier_env {
++	u32 insn_idx;
++	u32 prev_insn_idx;
+ 	struct bpf_prog *prog;		/* eBPF program being verified */
+ 	const struct bpf_verifier_ops *ops;
+ 	struct bpf_verifier_stack_elem *head; /* stack of verifier states to be processed */
+diff --git a/include/linux/filter.h b/include/linux/filter.h
+index ec90d5255cf7..1a39d57eb88f 100644
+--- a/include/linux/filter.h
++++ b/include/linux/filter.h
+@@ -53,14 +53,10 @@ struct sock_reuseport;
+ #define BPF_REG_D	BPF_REG_8	/* data, callee-saved */
+ #define BPF_REG_H	BPF_REG_9	/* hlen, callee-saved */
+ 
+-/* Kernel hidden auxiliary/helper register for hardening step.
+- * Only used by eBPF JITs. It's nothing more than a temporary
+- * register that JITs use internally, only that here it's part
+- * of eBPF instructions that have been rewritten for blinding
+- * constants. See JIT pre-step in bpf_jit_blind_constants().
+- */
++/* Kernel hidden auxiliary/helper register. */
+ #define BPF_REG_AX		MAX_BPF_REG
+-#define MAX_BPF_JIT_REG		(MAX_BPF_REG + 1)
++#define MAX_BPF_EXT_REG		(MAX_BPF_REG + 1)
++#define MAX_BPF_JIT_REG		MAX_BPF_EXT_REG
+ 
+ /* unused opcode to mark special call to bpf_tail_call() helper */
+ #define BPF_TAIL_CALL	0xf0
+diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h
+index 5185a16b19ba..bbde887ed393 100644
+--- a/include/linux/hyperv.h
++++ b/include/linux/hyperv.h
+@@ -1166,8 +1166,9 @@ struct hv_ring_buffer_debug_info {
+ 	u32 bytes_avail_towrite;
+ };
+ 
+-void hv_ringbuffer_get_debuginfo(const struct hv_ring_buffer_info *ring_info,
+-			    struct hv_ring_buffer_debug_info *debug_info);
++
++int hv_ringbuffer_get_debuginfo(const struct hv_ring_buffer_info *ring_info,
++				struct hv_ring_buffer_debug_info *debug_info);
+ 
+ /* Vmbus interface */
+ #define vmbus_driver_register(driver)	\
+diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
+index 60a2e7646985..5d69e208e8d9 100644
+--- a/include/linux/skbuff.h
++++ b/include/linux/skbuff.h
+@@ -3178,6 +3178,7 @@ int pskb_trim_rcsum_slow(struct sk_buff *skb, unsigned int len);
+  *
+  *	This is exactly the same as pskb_trim except that it ensures the
+  *	checksum of received packets are still valid after the operation.
++ *	It can change skb pointers.
+  */
+ 
+ static inline int pskb_trim_rcsum(struct sk_buff *skb, unsigned int len)
+diff --git a/include/net/ip_fib.h b/include/net/ip_fib.h
+index c9b7b136939d..95eed32d8c6b 100644
+--- a/include/net/ip_fib.h
++++ b/include/net/ip_fib.h
+@@ -230,7 +230,7 @@ int fib_table_delete(struct net *, struct fib_table *, struct fib_config *,
+ 		     struct netlink_ext_ack *extack);
+ int fib_table_dump(struct fib_table *table, struct sk_buff *skb,
+ 		   struct netlink_callback *cb);
+-int fib_table_flush(struct net *net, struct fib_table *table);
++int fib_table_flush(struct net *net, struct fib_table *table, bool flush_all);
+ struct fib_table *fib_trie_unmerge(struct fib_table *main_tb);
+ void fib_table_flush_external(struct fib_table *table);
+ void fib_free_table(struct fib_table *tb);
+diff --git a/include/uapi/linux/input.h b/include/uapi/linux/input.h
+index fb78f6f500f3..f056b2a00d5c 100644
+--- a/include/uapi/linux/input.h
++++ b/include/uapi/linux/input.h
+@@ -26,13 +26,17 @@
+  */
+ 
+ struct input_event {
+-#if (__BITS_PER_LONG != 32 || !defined(__USE_TIME_BITS64)) && !defined(__KERNEL)
++#if (__BITS_PER_LONG != 32 || !defined(__USE_TIME_BITS64)) && !defined(__KERNEL__)
+ 	struct timeval time;
+ #define input_event_sec time.tv_sec
+ #define input_event_usec time.tv_usec
+ #else
+ 	__kernel_ulong_t __sec;
++#if defined(__sparc__) && defined(__arch64__)
++	unsigned int __usec;
++#else
+ 	__kernel_ulong_t __usec;
++#endif
+ #define input_event_sec  __sec
+ #define input_event_usec __usec
+ #endif
+diff --git a/kernel/bpf/core.c b/kernel/bpf/core.c
+index 3f5bf1af0826..474525e3a9db 100644
+--- a/kernel/bpf/core.c
++++ b/kernel/bpf/core.c
+@@ -52,6 +52,7 @@
+ #define DST	regs[insn->dst_reg]
+ #define SRC	regs[insn->src_reg]
+ #define FP	regs[BPF_REG_FP]
++#define AX	regs[BPF_REG_AX]
+ #define ARG1	regs[BPF_REG_ARG1]
+ #define CTX	regs[BPF_REG_CTX]
+ #define IMM	insn->imm
+@@ -642,6 +643,26 @@ static int bpf_jit_blind_insn(const struct bpf_insn *from,
+ 	BUILD_BUG_ON(BPF_REG_AX  + 1 != MAX_BPF_JIT_REG);
+ 	BUILD_BUG_ON(MAX_BPF_REG + 1 != MAX_BPF_JIT_REG);
+ 
++	/* Constraints on AX register:
++	 *
++	 * AX register is inaccessible from user space. It is mapped in
++	 * all JITs, and used here for constant blinding rewrites. It is
++	 * typically "stateless" meaning its contents are only valid within
++	 * the executed instruction, but not across several instructions.
++	 * There are a few exceptions however which are further detailed
++	 * below.
++	 *
++	 * Constant blinding is only used by JITs, not in the interpreter.
++	 * The interpreter uses AX in some occasions as a local temporary
++	 * register e.g. in DIV or MOD instructions.
++	 *
++	 * In restricted circumstances, the verifier can also use the AX
++	 * register for rewrites as long as they do not interfere with
++	 * the above cases!
++	 */
++	if (from->dst_reg == BPF_REG_AX || from->src_reg == BPF_REG_AX)
++		goto out;
++
+ 	if (from->imm == 0 &&
+ 	    (from->code == (BPF_ALU   | BPF_MOV | BPF_K) ||
+ 	     from->code == (BPF_ALU64 | BPF_MOV | BPF_K))) {
+@@ -971,7 +992,6 @@ bool bpf_opcode_in_insntable(u8 code)
+  */
+ static u64 ___bpf_prog_run(u64 *regs, const struct bpf_insn *insn, u64 *stack)
+ {
+-	u64 tmp;
+ #define BPF_INSN_2_LBL(x, y)    [BPF_##x | BPF_##y] = &&x##_##y
+ #define BPF_INSN_3_LBL(x, y, z) [BPF_##x | BPF_##y | BPF_##z] = &&x##_##y##_##z
+ 	static const void *jumptable[256] = {
+@@ -1045,36 +1065,36 @@ select_insn:
+ 		(*(s64 *) &DST) >>= IMM;
+ 		CONT;
+ 	ALU64_MOD_X:
+-		div64_u64_rem(DST, SRC, &tmp);
+-		DST = tmp;
++		div64_u64_rem(DST, SRC, &AX);
++		DST = AX;
+ 		CONT;
+ 	ALU_MOD_X:
+-		tmp = (u32) DST;
+-		DST = do_div(tmp, (u32) SRC);
++		AX = (u32) DST;
++		DST = do_div(AX, (u32) SRC);
+ 		CONT;
+ 	ALU64_MOD_K:
+-		div64_u64_rem(DST, IMM, &tmp);
+-		DST = tmp;
++		div64_u64_rem(DST, IMM, &AX);
++		DST = AX;
+ 		CONT;
+ 	ALU_MOD_K:
+-		tmp = (u32) DST;
+-		DST = do_div(tmp, (u32) IMM);
++		AX = (u32) DST;
++		DST = do_div(AX, (u32) IMM);
+ 		CONT;
+ 	ALU64_DIV_X:
+ 		DST = div64_u64(DST, SRC);
+ 		CONT;
+ 	ALU_DIV_X:
+-		tmp = (u32) DST;
+-		do_div(tmp, (u32) SRC);
+-		DST = (u32) tmp;
++		AX = (u32) DST;
++		do_div(AX, (u32) SRC);
++		DST = (u32) AX;
+ 		CONT;
+ 	ALU64_DIV_K:
+ 		DST = div64_u64(DST, IMM);
+ 		CONT;
+ 	ALU_DIV_K:
+-		tmp = (u32) DST;
+-		do_div(tmp, (u32) IMM);
+-		DST = (u32) tmp;
++		AX = (u32) DST;
++		do_div(AX, (u32) IMM);
++		DST = (u32) AX;
+ 		CONT;
+ 	ALU_END_TO_BE:
+ 		switch (IMM) {
+@@ -1330,7 +1350,7 @@ STACK_FRAME_NON_STANDARD(___bpf_prog_run); /* jump table */
+ static unsigned int PROG_NAME(stack_size)(const void *ctx, const struct bpf_insn *insn) \
+ { \
+ 	u64 stack[stack_size / sizeof(u64)]; \
+-	u64 regs[MAX_BPF_REG]; \
++	u64 regs[MAX_BPF_EXT_REG]; \
+ \
+ 	FP = (u64) (unsigned long) &stack[ARRAY_SIZE(stack)]; \
+ 	ARG1 = (u64) (unsigned long) ctx; \
+@@ -1343,7 +1363,7 @@ static u64 PROG_NAME_ARGS(stack_size)(u64 r1, u64 r2, u64 r3, u64 r4, u64 r5, \
+ 				      const struct bpf_insn *insn) \
+ { \
+ 	u64 stack[stack_size / sizeof(u64)]; \
+-	u64 regs[MAX_BPF_REG]; \
++	u64 regs[MAX_BPF_EXT_REG]; \
+ \
+ 	FP = (u64) (unsigned long) &stack[ARRAY_SIZE(stack)]; \
+ 	BPF_R1 = r1; \
+diff --git a/kernel/bpf/map_in_map.c b/kernel/bpf/map_in_map.c
+index 3bfbf4464416..9670ee5ee74e 100644
+--- a/kernel/bpf/map_in_map.c
++++ b/kernel/bpf/map_in_map.c
+@@ -12,6 +12,7 @@
+ struct bpf_map *bpf_map_meta_alloc(int inner_map_ufd)
+ {
+ 	struct bpf_map *inner_map, *inner_map_meta;
++	u32 inner_map_meta_size;
+ 	struct fd f;
+ 
+ 	f = fdget(inner_map_ufd);
+@@ -35,7 +36,12 @@ struct bpf_map *bpf_map_meta_alloc(int inner_map_ufd)
+ 		return ERR_PTR(-EINVAL);
+ 	}
+ 
+-	inner_map_meta = kzalloc(sizeof(*inner_map_meta), GFP_USER);
++	inner_map_meta_size = sizeof(*inner_map_meta);
++	/* In some cases verifier needs to access beyond just base map. */
++	if (inner_map->ops == &array_map_ops)
++		inner_map_meta_size = sizeof(struct bpf_array);
++
++	inner_map_meta = kzalloc(inner_map_meta_size, GFP_USER);
+ 	if (!inner_map_meta) {
+ 		fdput(f);
+ 		return ERR_PTR(-ENOMEM);
+@@ -45,9 +51,16 @@ struct bpf_map *bpf_map_meta_alloc(int inner_map_ufd)
+ 	inner_map_meta->key_size = inner_map->key_size;
+ 	inner_map_meta->value_size = inner_map->value_size;
+ 	inner_map_meta->map_flags = inner_map->map_flags;
+-	inner_map_meta->ops = inner_map->ops;
+ 	inner_map_meta->max_entries = inner_map->max_entries;
+ 
++	/* Misc members not needed in bpf_map_meta_equal() check. */
++	inner_map_meta->ops = inner_map->ops;
++	if (inner_map->ops == &array_map_ops) {
++		inner_map_meta->unpriv_array = inner_map->unpriv_array;
++		container_of(inner_map_meta, struct bpf_array, map)->index_mask =
++		     container_of(inner_map, struct bpf_array, map)->index_mask;
++	}
++
+ 	fdput(f);
+ 	return inner_map_meta;
+ }
+diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
+index 341806668f03..4d81be2d0739 100644
+--- a/kernel/bpf/verifier.c
++++ b/kernel/bpf/verifier.c
+@@ -156,6 +156,7 @@ struct bpf_verifier_stack_elem {
+ 
+ #define BPF_COMPLEXITY_LIMIT_INSNS	131072
+ #define BPF_COMPLEXITY_LIMIT_STACK	1024
++#define BPF_COMPLEXITY_LIMIT_STATES	64
+ 
+ #define BPF_MAP_PTR_UNPRIV	1UL
+ #define BPF_MAP_PTR_POISON	((void *)((0xeB9FUL << 1) +	\
+@@ -465,6 +466,7 @@ static int copy_verifier_state(struct bpf_verifier_state *dst_state,
+ 		free_func_state(dst_state->frame[i]);
+ 		dst_state->frame[i] = NULL;
+ 	}
++	dst_state->speculative = src->speculative;
+ 	dst_state->curframe = src->curframe;
+ 	dst_state->parent = src->parent;
+ 	for (i = 0; i <= src->curframe; i++) {
+@@ -510,7 +512,8 @@ static int pop_stack(struct bpf_verifier_env *env, int *prev_insn_idx,
+ }
+ 
+ static struct bpf_verifier_state *push_stack(struct bpf_verifier_env *env,
+-					     int insn_idx, int prev_insn_idx)
++					     int insn_idx, int prev_insn_idx,
++					     bool speculative)
+ {
+ 	struct bpf_verifier_state *cur = env->cur_state;
+ 	struct bpf_verifier_stack_elem *elem;
+@@ -528,6 +531,7 @@ static struct bpf_verifier_state *push_stack(struct bpf_verifier_env *env,
+ 	err = copy_verifier_state(&elem->st, cur);
+ 	if (err)
+ 		goto err;
++	elem->st.speculative |= speculative;
+ 	if (env->stack_size > BPF_COMPLEXITY_LIMIT_STACK) {
+ 		verbose(env, "BPF program is too complex\n");
+ 		goto err;
+@@ -1237,6 +1241,31 @@ static int check_stack_read(struct bpf_verifier_env *env,
+ 	}
+ }
+ 
++static int check_stack_access(struct bpf_verifier_env *env,
++			      const struct bpf_reg_state *reg,
++			      int off, int size)
++{
++	/* Stack accesses must be at a fixed offset, so that we
++	 * can determine what type of data were returned. See
++	 * check_stack_read().
++	 */
++	if (!tnum_is_const(reg->var_off)) {
++		char tn_buf[48];
++
++		tnum_strn(tn_buf, sizeof(tn_buf), reg->var_off);
++		verbose(env, "variable stack access var_off=%s off=%d size=%d",
++			tn_buf, off, size);
++		return -EACCES;
++	}
++
++	if (off >= 0 || off < -MAX_BPF_STACK) {
++		verbose(env, "invalid stack off=%d size=%d\n", off, size);
++		return -EACCES;
++	}
++
++	return 0;
++}
++
+ /* check read/write into map element returned by bpf_map_lookup_elem() */
+ static int __check_map_access(struct bpf_verifier_env *env, u32 regno, int off,
+ 			      int size, bool zero_size_allowed)
+@@ -1268,13 +1297,17 @@ static int check_map_access(struct bpf_verifier_env *env, u32 regno,
+ 	 */
+ 	if (env->log.level)
+ 		print_verifier_state(env, state);
++
+ 	/* The minimum value is only important with signed
+ 	 * comparisons where we can't assume the floor of a
+ 	 * value is 0.  If we are using signed variables for our
+ 	 * index'es we need to make sure that whatever we use
+ 	 * will have a set floor within our range.
+ 	 */
+-	if (reg->smin_value < 0) {
++	if (reg->smin_value < 0 &&
++	    (reg->smin_value == S64_MIN ||
++	     (off + reg->smin_value != (s64)(s32)(off + reg->smin_value)) ||
++	      reg->smin_value + off < 0)) {
+ 		verbose(env, "R%d min value is negative, either use unsigned index or do a if (index >=0) check.\n",
+ 			regno);
+ 		return -EACCES;
+@@ -1735,24 +1768,10 @@ static int check_mem_access(struct bpf_verifier_env *env, int insn_idx, u32 regn
+ 		}
+ 
+ 	} else if (reg->type == PTR_TO_STACK) {
+-		/* stack accesses must be at a fixed offset, so that we can
+-		 * determine what type of data were returned.
+-		 * See check_stack_read().
+-		 */
+-		if (!tnum_is_const(reg->var_off)) {
+-			char tn_buf[48];
+-
+-			tnum_strn(tn_buf, sizeof(tn_buf), reg->var_off);
+-			verbose(env, "variable stack access var_off=%s off=%d size=%d",
+-				tn_buf, off, size);
+-			return -EACCES;
+-		}
+ 		off += reg->var_off.value;
+-		if (off >= 0 || off < -MAX_BPF_STACK) {
+-			verbose(env, "invalid stack off=%d size=%d\n", off,
+-				size);
+-			return -EACCES;
+-		}
++		err = check_stack_access(env, reg, off, size);
++		if (err)
++			return err;
+ 
+ 		state = func(env, reg);
+ 		err = update_stack_depth(env, state, off);
+@@ -2682,6 +2701,125 @@ static bool check_reg_sane_offset(struct bpf_verifier_env *env,
+ 	return true;
+ }
+ 
++static struct bpf_insn_aux_data *cur_aux(struct bpf_verifier_env *env)
++{
++	return &env->insn_aux_data[env->insn_idx];
++}
++
++static int retrieve_ptr_limit(const struct bpf_reg_state *ptr_reg,
++			      u32 *ptr_limit, u8 opcode, bool off_is_neg)
++{
++	bool mask_to_left = (opcode == BPF_ADD &&  off_is_neg) ||
++			    (opcode == BPF_SUB && !off_is_neg);
++	u32 off;
++
++	switch (ptr_reg->type) {
++	case PTR_TO_STACK:
++		off = ptr_reg->off + ptr_reg->var_off.value;
++		if (mask_to_left)
++			*ptr_limit = MAX_BPF_STACK + off;
++		else
++			*ptr_limit = -off;
++		return 0;
++	case PTR_TO_MAP_VALUE:
++		if (mask_to_left) {
++			*ptr_limit = ptr_reg->umax_value + ptr_reg->off;
++		} else {
++			off = ptr_reg->smin_value + ptr_reg->off;
++			*ptr_limit = ptr_reg->map_ptr->value_size - off;
++		}
++		return 0;
++	default:
++		return -EINVAL;
++	}
++}
++
++static bool can_skip_alu_sanitation(const struct bpf_verifier_env *env,
++				    const struct bpf_insn *insn)
++{
++	return env->allow_ptr_leaks || BPF_SRC(insn->code) == BPF_K;
++}
++
++static int update_alu_sanitation_state(struct bpf_insn_aux_data *aux,
++				       u32 alu_state, u32 alu_limit)
++{
++	/* If we arrived here from different branches with different
++	 * state or limits to sanitize, then this won't work.
++	 */
++	if (aux->alu_state &&
++	    (aux->alu_state != alu_state ||
++	     aux->alu_limit != alu_limit))
++		return -EACCES;
++
++	/* Corresponding fixup done in fixup_bpf_calls(). */
++	aux->alu_state = alu_state;
++	aux->alu_limit = alu_limit;
++	return 0;
++}
++
++static int sanitize_val_alu(struct bpf_verifier_env *env,
++			    struct bpf_insn *insn)
++{
++	struct bpf_insn_aux_data *aux = cur_aux(env);
++
++	if (can_skip_alu_sanitation(env, insn))
++		return 0;
++
++	return update_alu_sanitation_state(aux, BPF_ALU_NON_POINTER, 0);
++}
++
++static int sanitize_ptr_alu(struct bpf_verifier_env *env,
++			    struct bpf_insn *insn,
++			    const struct bpf_reg_state *ptr_reg,
++			    struct bpf_reg_state *dst_reg,
++			    bool off_is_neg)
++{
++	struct bpf_verifier_state *vstate = env->cur_state;
++	struct bpf_insn_aux_data *aux = cur_aux(env);
++	bool ptr_is_dst_reg = ptr_reg == dst_reg;
++	u8 opcode = BPF_OP(insn->code);
++	u32 alu_state, alu_limit;
++	struct bpf_reg_state tmp;
++	bool ret;
++
++	if (can_skip_alu_sanitation(env, insn))
++		return 0;
++
++	/* We already marked aux for masking from non-speculative
++	 * paths, thus we got here in the first place. We only care
++	 * to explore bad access from here.
++	 */
++	if (vstate->speculative)
++		goto do_sim;
++
++	alu_state  = off_is_neg ? BPF_ALU_NEG_VALUE : 0;
++	alu_state |= ptr_is_dst_reg ?
++		     BPF_ALU_SANITIZE_SRC : BPF_ALU_SANITIZE_DST;
++
++	if (retrieve_ptr_limit(ptr_reg, &alu_limit, opcode, off_is_neg))
++		return 0;
++	if (update_alu_sanitation_state(aux, alu_state, alu_limit))
++		return -EACCES;
++do_sim:
++	/* Simulate and find potential out-of-bounds access under
++	 * speculative execution from truncation as a result of
++	 * masking when off was not within expected range. If off
++	 * sits in dst, then we temporarily need to move ptr there
++	 * to simulate dst (== 0) +/-= ptr. Needed, for example,
++	 * for cases where we use K-based arithmetic in one direction
++	 * and truncated reg-based in the other in order to explore
++	 * bad access.
++	 */
++	if (!ptr_is_dst_reg) {
++		tmp = *dst_reg;
++		*dst_reg = *ptr_reg;
++	}
++	ret = push_stack(env, env->insn_idx + 1, env->insn_idx, true);
++	if (!ptr_is_dst_reg)
++		*dst_reg = tmp;
++	return !ret ? -EFAULT : 0;
++}
++
+ /* Handles arithmetic on a pointer and a scalar: computes new min/max and var_off.
+  * Caller should also handle BPF_MOV case separately.
+  * If we return -EACCES, caller may want to try again treating pointer as a
+@@ -2700,8 +2838,9 @@ static int adjust_ptr_min_max_vals(struct bpf_verifier_env *env,
+ 	    smin_ptr = ptr_reg->smin_value, smax_ptr = ptr_reg->smax_value;
+ 	u64 umin_val = off_reg->umin_value, umax_val = off_reg->umax_value,
+ 	    umin_ptr = ptr_reg->umin_value, umax_ptr = ptr_reg->umax_value;
++	u32 dst = insn->dst_reg, src = insn->src_reg;
+ 	u8 opcode = BPF_OP(insn->code);
+-	u32 dst = insn->dst_reg;
++	int ret;
+ 
+ 	dst_reg = &regs[dst];
+ 
+@@ -2737,6 +2876,12 @@ static int adjust_ptr_min_max_vals(struct bpf_verifier_env *env,
+ 			dst);
+ 		return -EACCES;
+ 	}
++	if (ptr_reg->type == PTR_TO_MAP_VALUE &&
++	    !env->allow_ptr_leaks && !known && (smin_val < 0) != (smax_val < 0)) {
++		verbose(env, "R%d has unknown scalar with mixed signed bounds, pointer arithmetic with it prohibited for !root\n",
++			off_reg == dst_reg ? dst : src);
++		return -EACCES;
++	}
+ 
+ 	/* In case of 'scalar += pointer', dst_reg inherits pointer type and id.
+ 	 * The id may be overwritten later if we create a new variable offset.
+@@ -2750,6 +2895,11 @@ static int adjust_ptr_min_max_vals(struct bpf_verifier_env *env,
+ 
+ 	switch (opcode) {
+ 	case BPF_ADD:
++		ret = sanitize_ptr_alu(env, insn, ptr_reg, dst_reg, smin_val < 0);
++		if (ret < 0) {
++			verbose(env, "R%d tried to add from different maps or paths\n", dst);
++			return ret;
++		}
+ 		/* We can take a fixed offset as long as it doesn't overflow
+ 		 * the s32 'off' field
+ 		 */
+@@ -2800,6 +2950,11 @@ static int adjust_ptr_min_max_vals(struct bpf_verifier_env *env,
+ 		}
+ 		break;
+ 	case BPF_SUB:
++		ret = sanitize_ptr_alu(env, insn, ptr_reg, dst_reg, smin_val < 0);
++		if (ret < 0) {
++			verbose(env, "R%d tried to sub from different maps or paths\n", dst);
++			return ret;
++		}
+ 		if (dst_reg == off_reg) {
+ 			/* scalar -= pointer.  Creates an unknown scalar */
+ 			verbose(env, "R%d tried to subtract pointer from scalar\n",
+@@ -2879,6 +3034,25 @@ static int adjust_ptr_min_max_vals(struct bpf_verifier_env *env,
+ 	__update_reg_bounds(dst_reg);
+ 	__reg_deduce_bounds(dst_reg);
+ 	__reg_bound_offset(dst_reg);
++
++	/* For unprivileged we require that resulting offset must be in bounds
++	 * in order to be able to sanitize access later on.
++	 */
++	if (!env->allow_ptr_leaks) {
++		if (dst_reg->type == PTR_TO_MAP_VALUE &&
++		    check_map_access(env, dst, dst_reg->off, 1, false)) {
++			verbose(env, "R%d pointer arithmetic of map value goes out of range, "
++				"prohibited for !root\n", dst);
++			return -EACCES;
++		} else if (dst_reg->type == PTR_TO_STACK &&
++			   check_stack_access(env, dst_reg, dst_reg->off +
++					      dst_reg->var_off.value, 1)) {
++			verbose(env, "R%d stack pointer arithmetic goes out of range, "
++				"prohibited for !root\n", dst);
++			return -EACCES;
++		}
++	}
++
+ 	return 0;
+ }
+ 
+@@ -2897,6 +3071,8 @@ static int adjust_scalar_min_max_vals(struct bpf_verifier_env *env,
+ 	s64 smin_val, smax_val;
+ 	u64 umin_val, umax_val;
+ 	u64 insn_bitness = (BPF_CLASS(insn->code) == BPF_ALU64) ? 64 : 32;
++	u32 dst = insn->dst_reg;
++	int ret;
+ 
+ 	if (insn_bitness == 32) {
+ 		/* Relevant for 32-bit RSH: Information can propagate towards
+@@ -2931,6 +3107,11 @@ static int adjust_scalar_min_max_vals(struct bpf_verifier_env *env,
+ 
+ 	switch (opcode) {
+ 	case BPF_ADD:
++		ret = sanitize_val_alu(env, insn);
++		if (ret < 0) {
++			verbose(env, "R%d tried to add from different pointers or scalars\n", dst);
++			return ret;
++		}
+ 		if (signed_add_overflows(dst_reg->smin_value, smin_val) ||
+ 		    signed_add_overflows(dst_reg->smax_value, smax_val)) {
+ 			dst_reg->smin_value = S64_MIN;
+@@ -2950,6 +3131,11 @@ static int adjust_scalar_min_max_vals(struct bpf_verifier_env *env,
+ 		dst_reg->var_off = tnum_add(dst_reg->var_off, src_reg.var_off);
+ 		break;
+ 	case BPF_SUB:
++		ret = sanitize_val_alu(env, insn);
++		if (ret < 0) {
++			verbose(env, "R%d tried to sub from different pointers or scalars\n", dst);
++			return ret;
++		}
+ 		if (signed_sub_overflows(dst_reg->smin_value, smax_val) ||
+ 		    signed_sub_overflows(dst_reg->smax_value, smin_val)) {
+ 			/* Overflow possible, we know nothing */
+@@ -3475,6 +3661,79 @@ static void find_good_pkt_pointers(struct bpf_verifier_state *vstate,
+ 	}
+ }
+ 
++/* compute branch direction of the expression "if (reg opcode val) goto target;"
++ * and return:
++ *  1 - branch will be taken and "goto target" will be executed
++ *  0 - branch will not be taken and fall-through to next insn
++ * -1 - unknown. Example: "if (reg < 5)" is unknown when register value range [0,10]
++ */
++static int is_branch_taken(struct bpf_reg_state *reg, u64 val, u8 opcode)
++{
++	if (__is_pointer_value(false, reg))
++		return -1;
++
++	switch (opcode) {
++	case BPF_JEQ:
++		if (tnum_is_const(reg->var_off))
++			return !!tnum_equals_const(reg->var_off, val);
++		break;
++	case BPF_JNE:
++		if (tnum_is_const(reg->var_off))
++			return !tnum_equals_const(reg->var_off, val);
++		break;
++	case BPF_JGT:
++		if (reg->umin_value > val)
++			return 1;
++		else if (reg->umax_value <= val)
++			return 0;
++		break;
++	case BPF_JSGT:
++		if (reg->smin_value > (s64)val)
++			return 1;
++		else if (reg->smax_value < (s64)val)
++			return 0;
++		break;
++	case BPF_JLT:
++		if (reg->umax_value < val)
++			return 1;
++		else if (reg->umin_value >= val)
++			return 0;
++		break;
++	case BPF_JSLT:
++		if (reg->smax_value < (s64)val)
++			return 1;
++		else if (reg->smin_value >= (s64)val)
++			return 0;
++		break;
++	case BPF_JGE:
++		if (reg->umin_value >= val)
++			return 1;
++		else if (reg->umax_value < val)
++			return 0;
++		break;
++	case BPF_JSGE:
++		if (reg->smin_value >= (s64)val)
++			return 1;
++		else if (reg->smax_value < (s64)val)
++			return 0;
++		break;
++	case BPF_JLE:
++		if (reg->umax_value <= val)
++			return 1;
++		else if (reg->umin_value > val)
++			return 0;
++		break;
++	case BPF_JSLE:
++		if (reg->smax_value <= (s64)val)
++			return 1;
++		else if (reg->smin_value > (s64)val)
++			return 0;
++		break;
++	}
++
++	return -1;
++}
++
+ /* Adjusts the register min/max values in the case that the dst_reg is the
+  * variable register that we are working on, and src_reg is a constant or we're
+  * simply doing a BPF_K check.
+@@ -3868,28 +4127,23 @@ static int check_cond_jmp_op(struct bpf_verifier_env *env,
+ 
+ 	dst_reg = &regs[insn->dst_reg];
+ 
+-	/* detect if R == 0 where R was initialized to zero earlier */
+-	if (BPF_SRC(insn->code) == BPF_K &&
+-	    (opcode == BPF_JEQ || opcode == BPF_JNE) &&
+-	    dst_reg->type == SCALAR_VALUE &&
+-	    tnum_is_const(dst_reg->var_off)) {
+-		if ((opcode == BPF_JEQ && dst_reg->var_off.value == insn->imm) ||
+-		    (opcode == BPF_JNE && dst_reg->var_off.value != insn->imm)) {
+-			/* if (imm == imm) goto pc+off;
+-			 * only follow the goto, ignore fall-through
+-			 */
++	if (BPF_SRC(insn->code) == BPF_K) {
++		int pred = is_branch_taken(dst_reg, insn->imm, opcode);
++
++		if (pred == 1) {
++			 /* only follow the goto, ignore fall-through */
+ 			*insn_idx += insn->off;
+ 			return 0;
+-		} else {
+-			/* if (imm != imm) goto pc+off;
+-			 * only follow fall-through branch, since
++		} else if (pred == 0) {
++			/* only follow fall-through branch, since
+ 			 * that's where the program will go
+ 			 */
+ 			return 0;
+ 		}
+ 	}
+ 
+-	other_branch = push_stack(env, *insn_idx + insn->off + 1, *insn_idx);
++	other_branch = push_stack(env, *insn_idx + insn->off + 1, *insn_idx,
++				  false);
+ 	if (!other_branch)
+ 		return -EFAULT;
+ 	other_branch_regs = other_branch->frame[other_branch->curframe]->regs;
+@@ -4604,6 +4858,12 @@ static bool states_equal(struct bpf_verifier_env *env,
+ 	if (old->curframe != cur->curframe)
+ 		return false;
+ 
++	/* Verification state from speculative execution simulation
++	 * must never prune a non-speculative execution one.
++	 */
++	if (old->speculative && !cur->speculative)
++		return false;
++
+ 	/* for states to be equal callsites have to be the same
+ 	 * and all frame states need to be equivalent
+ 	 */
+@@ -4668,7 +4928,7 @@ static int is_state_visited(struct bpf_verifier_env *env, int insn_idx)
+ 	struct bpf_verifier_state_list *new_sl;
+ 	struct bpf_verifier_state_list *sl;
+ 	struct bpf_verifier_state *cur = env->cur_state;
+-	int i, j, err;
++	int i, j, err, states_cnt = 0;
+ 
+ 	sl = env->explored_states[insn_idx];
+ 	if (!sl)
+@@ -4695,8 +4955,12 @@ static int is_state_visited(struct bpf_verifier_env *env, int insn_idx)
+ 			return 1;
+ 		}
+ 		sl = sl->next;
++		states_cnt++;
+ 	}
+ 
++	if (!env->allow_ptr_leaks && states_cnt > BPF_COMPLEXITY_LIMIT_STATES)
++		return 0;
++
+ 	/* there were no equivalent states, remember current one.
+ 	 * technically the current state is not proven to be safe yet,
+ 	 * but it will either reach outer most bpf_exit (which means it's safe)
+@@ -4744,7 +5008,6 @@ static int do_check(struct bpf_verifier_env *env)
+ 	struct bpf_insn *insns = env->prog->insnsi;
+ 	struct bpf_reg_state *regs;
+ 	int insn_cnt = env->prog->len, i;
+-	int insn_idx, prev_insn_idx = 0;
+ 	int insn_processed = 0;
+ 	bool do_print_state = false;
+ 
+@@ -4752,7 +5015,7 @@ static int do_check(struct bpf_verifier_env *env)
+ 	if (!state)
+ 		return -ENOMEM;
+ 	state->curframe = 0;
+-	state->parent = NULL;
++	state->speculative = false;
+ 	state->frame[0] = kzalloc(sizeof(struct bpf_func_state), GFP_KERNEL);
+ 	if (!state->frame[0]) {
+ 		kfree(state);
+@@ -4763,19 +5026,19 @@ static int do_check(struct bpf_verifier_env *env)
+ 			BPF_MAIN_FUNC /* callsite */,
+ 			0 /* frameno */,
+ 			0 /* subprogno, zero == main subprog */);
+-	insn_idx = 0;
++
+ 	for (;;) {
+ 		struct bpf_insn *insn;
+ 		u8 class;
+ 		int err;
+ 
+-		if (insn_idx >= insn_cnt) {
++		if (env->insn_idx >= insn_cnt) {
+ 			verbose(env, "invalid insn idx %d insn_cnt %d\n",
+-				insn_idx, insn_cnt);
++				env->insn_idx, insn_cnt);
+ 			return -EFAULT;
+ 		}
+ 
+-		insn = &insns[insn_idx];
++		insn = &insns[env->insn_idx];
+ 		class = BPF_CLASS(insn->code);
+ 
+ 		if (++insn_processed > BPF_COMPLEXITY_LIMIT_INSNS) {
+@@ -4785,17 +5048,19 @@ static int do_check(struct bpf_verifier_env *env)
+ 			return -E2BIG;
+ 		}
+ 
+-		err = is_state_visited(env, insn_idx);
++		err = is_state_visited(env, env->insn_idx);
+ 		if (err < 0)
+ 			return err;
+ 		if (err == 1) {
+ 			/* found equivalent state, can prune the search */
+ 			if (env->log.level) {
+ 				if (do_print_state)
+-					verbose(env, "\nfrom %d to %d: safe\n",
+-						prev_insn_idx, insn_idx);
++					verbose(env, "\nfrom %d to %d%s: safe\n",
++						env->prev_insn_idx, env->insn_idx,
++						env->cur_state->speculative ?
++						" (speculative execution)" : "");
+ 				else
+-					verbose(env, "%d: safe\n", insn_idx);
++					verbose(env, "%d: safe\n", env->insn_idx);
+ 			}
+ 			goto process_bpf_exit;
+ 		}
+@@ -4808,10 +5073,12 @@ static int do_check(struct bpf_verifier_env *env)
+ 
+ 		if (env->log.level > 1 || (env->log.level && do_print_state)) {
+ 			if (env->log.level > 1)
+-				verbose(env, "%d:", insn_idx);
++				verbose(env, "%d:", env->insn_idx);
+ 			else
+-				verbose(env, "\nfrom %d to %d:",
+-					prev_insn_idx, insn_idx);
++				verbose(env, "\nfrom %d to %d%s:",
++					env->prev_insn_idx, env->insn_idx,
++					env->cur_state->speculative ?
++					" (speculative execution)" : "");
+ 			print_verifier_state(env, state->frame[state->curframe]);
+ 			do_print_state = false;
+ 		}
+@@ -4822,19 +5089,20 @@ static int do_check(struct bpf_verifier_env *env)
+ 				.private_data	= env,
+ 			};
+ 
+-			verbose(env, "%d: ", insn_idx);
++			verbose(env, "%d: ", env->insn_idx);
+ 			print_bpf_insn(&cbs, insn, env->allow_ptr_leaks);
+ 		}
+ 
+ 		if (bpf_prog_is_dev_bound(env->prog->aux)) {
+-			err = bpf_prog_offload_verify_insn(env, insn_idx,
+-							   prev_insn_idx);
++			err = bpf_prog_offload_verify_insn(env, env->insn_idx,
++							   env->prev_insn_idx);
+ 			if (err)
+ 				return err;
+ 		}
+ 
+ 		regs = cur_regs(env);
+-		env->insn_aux_data[insn_idx].seen = true;
++		env->insn_aux_data[env->insn_idx].seen = true;
++
+ 		if (class == BPF_ALU || class == BPF_ALU64) {
+ 			err = check_alu_op(env, insn);
+ 			if (err)
+@@ -4859,13 +5127,13 @@ static int do_check(struct bpf_verifier_env *env)
+ 			/* check that memory (src_reg + off) is readable,
+ 			 * the state of dst_reg will be updated by this func
+ 			 */
+-			err = check_mem_access(env, insn_idx, insn->src_reg, insn->off,
+-					       BPF_SIZE(insn->code), BPF_READ,
+-					       insn->dst_reg, false);
++			err = check_mem_access(env, env->insn_idx, insn->src_reg,
++					       insn->off, BPF_SIZE(insn->code),
++					       BPF_READ, insn->dst_reg, false);
+ 			if (err)
+ 				return err;
+ 
+-			prev_src_type = &env->insn_aux_data[insn_idx].ptr_type;
++			prev_src_type = &env->insn_aux_data[env->insn_idx].ptr_type;
+ 
+ 			if (*prev_src_type == NOT_INIT) {
+ 				/* saw a valid insn
+@@ -4892,10 +5160,10 @@ static int do_check(struct bpf_verifier_env *env)
+ 			enum bpf_reg_type *prev_dst_type, dst_reg_type;
+ 
+ 			if (BPF_MODE(insn->code) == BPF_XADD) {
+-				err = check_xadd(env, insn_idx, insn);
++				err = check_xadd(env, env->insn_idx, insn);
+ 				if (err)
+ 					return err;
+-				insn_idx++;
++				env->insn_idx++;
+ 				continue;
+ 			}
+ 
+@@ -4911,13 +5179,13 @@ static int do_check(struct bpf_verifier_env *env)
+ 			dst_reg_type = regs[insn->dst_reg].type;
+ 
+ 			/* check that memory (dst_reg + off) is writeable */
+-			err = check_mem_access(env, insn_idx, insn->dst_reg, insn->off,
+-					       BPF_SIZE(insn->code), BPF_WRITE,
+-					       insn->src_reg, false);
++			err = check_mem_access(env, env->insn_idx, insn->dst_reg,
++					       insn->off, BPF_SIZE(insn->code),
++					       BPF_WRITE, insn->src_reg, false);
+ 			if (err)
+ 				return err;
+ 
+-			prev_dst_type = &env->insn_aux_data[insn_idx].ptr_type;
++			prev_dst_type = &env->insn_aux_data[env->insn_idx].ptr_type;
+ 
+ 			if (*prev_dst_type == NOT_INIT) {
+ 				*prev_dst_type = dst_reg_type;
+@@ -4946,9 +5214,9 @@ static int do_check(struct bpf_verifier_env *env)
+ 			}
+ 
+ 			/* check that memory (dst_reg + off) is writeable */
+-			err = check_mem_access(env, insn_idx, insn->dst_reg, insn->off,
+-					       BPF_SIZE(insn->code), BPF_WRITE,
+-					       -1, false);
++			err = check_mem_access(env, env->insn_idx, insn->dst_reg,
++					       insn->off, BPF_SIZE(insn->code),
++					       BPF_WRITE, -1, false);
+ 			if (err)
+ 				return err;
+ 
+@@ -4966,9 +5234,9 @@ static int do_check(struct bpf_verifier_env *env)
+ 				}
+ 
+ 				if (insn->src_reg == BPF_PSEUDO_CALL)
+-					err = check_func_call(env, insn, &insn_idx);
++					err = check_func_call(env, insn, &env->insn_idx);
+ 				else
+-					err = check_helper_call(env, insn->imm, insn_idx);
++					err = check_helper_call(env, insn->imm, env->insn_idx);
+ 				if (err)
+ 					return err;
+ 
+@@ -4981,7 +5249,7 @@ static int do_check(struct bpf_verifier_env *env)
+ 					return -EINVAL;
+ 				}
+ 
+-				insn_idx += insn->off + 1;
++				env->insn_idx += insn->off + 1;
+ 				continue;
+ 
+ 			} else if (opcode == BPF_EXIT) {
+@@ -4995,8 +5263,8 @@ static int do_check(struct bpf_verifier_env *env)
+ 
+ 				if (state->curframe) {
+ 					/* exit from nested function */
+-					prev_insn_idx = insn_idx;
+-					err = prepare_func_exit(env, &insn_idx);
++					env->prev_insn_idx = env->insn_idx;
++					err = prepare_func_exit(env, &env->insn_idx);
+ 					if (err)
+ 						return err;
+ 					do_print_state = true;
+@@ -5022,7 +5290,8 @@ static int do_check(struct bpf_verifier_env *env)
+ 				if (err)
+ 					return err;
+ process_bpf_exit:
+-				err = pop_stack(env, &prev_insn_idx, &insn_idx);
++				err = pop_stack(env, &env->prev_insn_idx,
++						&env->insn_idx);
+ 				if (err < 0) {
+ 					if (err != -ENOENT)
+ 						return err;
+@@ -5032,7 +5301,7 @@ process_bpf_exit:
+ 					continue;
+ 				}
+ 			} else {
+-				err = check_cond_jmp_op(env, insn, &insn_idx);
++				err = check_cond_jmp_op(env, insn, &env->insn_idx);
+ 				if (err)
+ 					return err;
+ 			}
+@@ -5049,8 +5318,8 @@ process_bpf_exit:
+ 				if (err)
+ 					return err;
+ 
+-				insn_idx++;
+-				env->insn_aux_data[insn_idx].seen = true;
++				env->insn_idx++;
++				env->insn_aux_data[env->insn_idx].seen = true;
+ 			} else {
+ 				verbose(env, "invalid BPF_LD mode\n");
+ 				return -EINVAL;
+@@ -5060,7 +5329,7 @@ process_bpf_exit:
+ 			return -EINVAL;
+ 		}
+ 
+-		insn_idx++;
++		env->insn_idx++;
+ 	}
+ 
+ 	verbose(env, "processed %d insns (limit %d), stack depth ",
+@@ -5756,6 +6025,57 @@ static int fixup_bpf_calls(struct bpf_verifier_env *env)
+ 			continue;
+ 		}
+ 
++		if (insn->code == (BPF_ALU64 | BPF_ADD | BPF_X) ||
++		    insn->code == (BPF_ALU64 | BPF_SUB | BPF_X)) {
++			const u8 code_add = BPF_ALU64 | BPF_ADD | BPF_X;
++			const u8 code_sub = BPF_ALU64 | BPF_SUB | BPF_X;
++			struct bpf_insn insn_buf[16];
++			struct bpf_insn *patch = &insn_buf[0];
++			bool issrc, isneg;
++			u32 off_reg;
++
++			aux = &env->insn_aux_data[i + delta];
++			if (!aux->alu_state)
++				continue;
++
++			isneg = aux->alu_state & BPF_ALU_NEG_VALUE;
++			issrc = (aux->alu_state & BPF_ALU_SANITIZE) ==
++				BPF_ALU_SANITIZE_SRC;
++
++			off_reg = issrc ? insn->src_reg : insn->dst_reg;
++			if (isneg)
++				*patch++ = BPF_ALU64_IMM(BPF_MUL, off_reg, -1);
++			*patch++ = BPF_MOV32_IMM(BPF_REG_AX, aux->alu_limit - 1);
++			*patch++ = BPF_ALU64_REG(BPF_SUB, BPF_REG_AX, off_reg);
++			*patch++ = BPF_ALU64_REG(BPF_OR, BPF_REG_AX, off_reg);
++			*patch++ = BPF_ALU64_IMM(BPF_NEG, BPF_REG_AX, 0);
++			*patch++ = BPF_ALU64_IMM(BPF_ARSH, BPF_REG_AX, 63);
++			if (issrc) {
++				*patch++ = BPF_ALU64_REG(BPF_AND, BPF_REG_AX,
++							 off_reg);
++				insn->src_reg = BPF_REG_AX;
++			} else {
++				*patch++ = BPF_ALU64_REG(BPF_AND, off_reg,
++							 BPF_REG_AX);
++			}
++			if (isneg)
++				insn->code = insn->code == code_add ?
++					     code_sub : code_add;
++			*patch++ = *insn;
++			if (issrc && isneg)
++				*patch++ = BPF_ALU64_IMM(BPF_MUL, off_reg, -1);
++			cnt = patch - insn_buf;
++
++			new_prog = bpf_patch_insn_data(env, i + delta, insn_buf, cnt);
++			if (!new_prog)
++				return -ENOMEM;
++
++			delta    += cnt - 1;
++			env->prog = prog = new_prog;
++			insn      = new_prog->insnsi + i + delta;
++			continue;
++		}
++
+ 		if (insn->code != (BPF_JMP | BPF_CALL))
+ 			continue;
+ 		if (insn->src_reg == BPF_PSEUDO_CALL)
+diff --git a/kernel/time/posix-cpu-timers.c b/kernel/time/posix-cpu-timers.c
+index ce32cf741b25..76801b9b481e 100644
+--- a/kernel/time/posix-cpu-timers.c
++++ b/kernel/time/posix-cpu-timers.c
+@@ -685,6 +685,7 @@ static int posix_cpu_timer_set(struct k_itimer *timer, int timer_flags,
+ 	 * set up the signal and overrun bookkeeping.
+ 	 */
+ 	timer->it.cpu.incr = timespec64_to_ns(&new->it_interval);
++	timer->it_interval = ns_to_ktime(timer->it.cpu.incr);
+ 
+ 	/*
+ 	 * This acts as a modification timestamp for the timer,
+diff --git a/mm/page_alloc.c b/mm/page_alloc.c
+index 93e73ccb4dec..9e45553cabd6 100644
+--- a/mm/page_alloc.c
++++ b/mm/page_alloc.c
+@@ -5538,18 +5538,6 @@ not_early:
+ 			cond_resched();
+ 		}
+ 	}
+-#ifdef CONFIG_SPARSEMEM
+-	/*
+-	 * If the zone does not span the rest of the section then
+-	 * we should at least initialize those pages. Otherwise we
+-	 * could blow up on a poisoned page in some paths which depend
+-	 * on full sections being initialized (e.g. memory hotplug).
+-	 */
+-	while (end_pfn % PAGES_PER_SECTION) {
+-		__init_single_page(pfn_to_page(end_pfn), end_pfn, zone, nid);
+-		end_pfn++;
+-	}
+-#endif
+ }
+ 
+ static void __meminit zone_init_free_lists(struct zone *zone)
+diff --git a/net/bridge/br_forward.c b/net/bridge/br_forward.c
+index 2cb8da465b98..48ddc60b4fbd 100644
+--- a/net/bridge/br_forward.c
++++ b/net/bridge/br_forward.c
+@@ -36,10 +36,10 @@ static inline int should_deliver(const struct net_bridge_port *p,
+ 
+ int br_dev_queue_push_xmit(struct net *net, struct sock *sk, struct sk_buff *skb)
+ {
++	skb_push(skb, ETH_HLEN);
+ 	if (!is_skb_forwardable(skb->dev, skb))
+ 		goto drop;
+ 
+-	skb_push(skb, ETH_HLEN);
+ 	br_drop_fake_rtable(skb);
+ 
+ 	if (skb->ip_summed == CHECKSUM_PARTIAL &&
+@@ -98,12 +98,11 @@ static void __br_forward(const struct net_bridge_port *to,
+ 		net = dev_net(indev);
+ 	} else {
+ 		if (unlikely(netpoll_tx_running(to->br->dev))) {
+-			if (!is_skb_forwardable(skb->dev, skb)) {
++			skb_push(skb, ETH_HLEN);
++			if (!is_skb_forwardable(skb->dev, skb))
+ 				kfree_skb(skb);
+-			} else {
+-				skb_push(skb, ETH_HLEN);
++			else
+ 				br_netpoll_send_skb(to, skb);
+-			}
+ 			return;
+ 		}
+ 		br_hook = NF_BR_LOCAL_OUT;
+diff --git a/net/bridge/br_netfilter_ipv6.c b/net/bridge/br_netfilter_ipv6.c
+index 96c072e71ea2..5811208863b7 100644
+--- a/net/bridge/br_netfilter_ipv6.c
++++ b/net/bridge/br_netfilter_ipv6.c
+@@ -131,6 +131,7 @@ int br_validate_ipv6(struct net *net, struct sk_buff *skb)
+ 					IPSTATS_MIB_INDISCARDS);
+ 			goto drop;
+ 		}
++		hdr = ipv6_hdr(skb);
+ 	}
+ 	if (hdr->nexthdr == NEXTHDR_HOP && br_nf_check_hbh_len(skb))
+ 		goto drop;
+diff --git a/net/bridge/netfilter/nft_reject_bridge.c b/net/bridge/netfilter/nft_reject_bridge.c
+index 08cbed7d940e..419e8edf23ba 100644
+--- a/net/bridge/netfilter/nft_reject_bridge.c
++++ b/net/bridge/netfilter/nft_reject_bridge.c
+@@ -229,6 +229,7 @@ static bool reject6_br_csum_ok(struct sk_buff *skb, int hook)
+ 	    pskb_trim_rcsum(skb, ntohs(ip6h->payload_len) + sizeof(*ip6h)))
+ 		return false;
+ 
++	ip6h = ipv6_hdr(skb);
+ 	thoff = ipv6_skip_exthdr(skb, ((u8*)(ip6h+1) - skb->data), &proto, &fo);
+ 	if (thoff < 0 || thoff >= skb->len || (fo & htons(~0x7)) != 0)
+ 		return false;
+diff --git a/net/can/bcm.c b/net/can/bcm.c
+index 0af8f0db892a..79bb8afa9c0c 100644
+--- a/net/can/bcm.c
++++ b/net/can/bcm.c
+@@ -67,6 +67,9 @@
+  */
+ #define MAX_NFRAMES 256
+ 
++/* limit timers to 400 days for sending/timeouts */
++#define BCM_TIMER_SEC_MAX (400 * 24 * 60 * 60)
++
+ /* use of last_frames[index].flags */
+ #define RX_RECV    0x40 /* received data for this element */
+ #define RX_THR     0x80 /* element not been sent due to throttle feature */
+@@ -140,6 +143,22 @@ static inline ktime_t bcm_timeval_to_ktime(struct bcm_timeval tv)
+ 	return ktime_set(tv.tv_sec, tv.tv_usec * NSEC_PER_USEC);
+ }
+ 
++/* check limitations for timeval provided by user */
++static bool bcm_is_invalid_tv(struct bcm_msg_head *msg_head)
++{
++	if ((msg_head->ival1.tv_sec < 0) ||
++	    (msg_head->ival1.tv_sec > BCM_TIMER_SEC_MAX) ||
++	    (msg_head->ival1.tv_usec < 0) ||
++	    (msg_head->ival1.tv_usec >= USEC_PER_SEC) ||
++	    (msg_head->ival2.tv_sec < 0) ||
++	    (msg_head->ival2.tv_sec > BCM_TIMER_SEC_MAX) ||
++	    (msg_head->ival2.tv_usec < 0) ||
++	    (msg_head->ival2.tv_usec >= USEC_PER_SEC))
++		return true;
++
++	return false;
++}
++
+ #define CFSIZ(flags) ((flags & CAN_FD_FRAME) ? CANFD_MTU : CAN_MTU)
+ #define OPSIZ sizeof(struct bcm_op)
+ #define MHSIZ sizeof(struct bcm_msg_head)
+@@ -873,6 +892,10 @@ static int bcm_tx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg,
+ 	if (msg_head->nframes < 1 || msg_head->nframes > MAX_NFRAMES)
+ 		return -EINVAL;
+ 
++	/* check timeval limitations */
++	if ((msg_head->flags & SETTIMER) && bcm_is_invalid_tv(msg_head))
++		return -EINVAL;
++
+ 	/* check the given can_id */
+ 	op = bcm_find_op(&bo->tx_ops, msg_head, ifindex);
+ 	if (op) {
+@@ -1053,6 +1076,10 @@ static int bcm_rx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg,
+ 	     (!(msg_head->can_id & CAN_RTR_FLAG))))
+ 		return -EINVAL;
+ 
++	/* check timeval limitations */
++	if ((msg_head->flags & SETTIMER) && bcm_is_invalid_tv(msg_head))
++		return -EINVAL;
++
+ 	/* check the given can_id */
+ 	op = bcm_find_op(&bo->rx_ops, msg_head, ifindex);
+ 	if (op) {
+diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
+index 0113993e9b2c..958e185a8e8d 100644
+--- a/net/ipv4/fib_frontend.c
++++ b/net/ipv4/fib_frontend.c
+@@ -203,7 +203,7 @@ static void fib_flush(struct net *net)
+ 		struct fib_table *tb;
+ 
+ 		hlist_for_each_entry_safe(tb, tmp, head, tb_hlist)
+-			flushed += fib_table_flush(net, tb);
++			flushed += fib_table_flush(net, tb, false);
+ 	}
+ 
+ 	if (flushed)
+@@ -1357,7 +1357,7 @@ static void ip_fib_net_exit(struct net *net)
+ 
+ 		hlist_for_each_entry_safe(tb, tmp, head, tb_hlist) {
+ 			hlist_del(&tb->tb_hlist);
+-			fib_table_flush(net, tb);
++			fib_table_flush(net, tb, true);
+ 			fib_free_table(tb);
+ 		}
+ 	}
+diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
+index 5bc0c89e81e4..3955a6d7ea66 100644
+--- a/net/ipv4/fib_trie.c
++++ b/net/ipv4/fib_trie.c
+@@ -1856,7 +1856,7 @@ void fib_table_flush_external(struct fib_table *tb)
+ }
+ 
+ /* Caller must hold RTNL. */
+-int fib_table_flush(struct net *net, struct fib_table *tb)
++int fib_table_flush(struct net *net, struct fib_table *tb, bool flush_all)
+ {
+ 	struct trie *t = (struct trie *)tb->tb_data;
+ 	struct key_vector *pn = t->kv;
+@@ -1904,8 +1904,17 @@ int fib_table_flush(struct net *net, struct fib_table *tb)
+ 		hlist_for_each_entry_safe(fa, tmp, &n->leaf, fa_list) {
+ 			struct fib_info *fi = fa->fa_info;
+ 
+-			if (!fi || !(fi->fib_flags & RTNH_F_DEAD) ||
+-			    tb->tb_id != fa->tb_id) {
++			if (!fi || tb->tb_id != fa->tb_id ||
++			    (!(fi->fib_flags & RTNH_F_DEAD) &&
++			     !fib_props[fa->fa_type].error)) {
++				slen = fa->fa_slen;
++				continue;
++			}
++
++			/* Do not flush error routes if network namespace is
++			 * not being dismantled
++			 */
++			if (!flush_all && fib_props[fa->fa_type].error) {
+ 				slen = fa->fa_slen;
+ 				continue;
+ 			}
+diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
+index 5ef5df3a06f1..0bfad3e72509 100644
+--- a/net/ipv4/ip_gre.c
++++ b/net/ipv4/ip_gre.c
+@@ -570,8 +570,7 @@ err_free_skb:
+ 	dev->stats.tx_dropped++;
+ }
+ 
+-static void erspan_fb_xmit(struct sk_buff *skb, struct net_device *dev,
+-			   __be16 proto)
++static void erspan_fb_xmit(struct sk_buff *skb, struct net_device *dev)
+ {
+ 	struct ip_tunnel *tunnel = netdev_priv(dev);
+ 	struct ip_tunnel_info *tun_info;
+@@ -579,10 +578,10 @@ static void erspan_fb_xmit(struct sk_buff *skb, struct net_device *dev,
+ 	struct erspan_metadata *md;
+ 	struct rtable *rt = NULL;
+ 	bool truncate = false;
++	__be16 df, proto;
+ 	struct flowi4 fl;
+ 	int tunnel_hlen;
+ 	int version;
+-	__be16 df;
+ 	int nhoff;
+ 	int thoff;
+ 
+@@ -627,18 +626,20 @@ static void erspan_fb_xmit(struct sk_buff *skb, struct net_device *dev,
+ 	if (version == 1) {
+ 		erspan_build_header(skb, ntohl(tunnel_id_to_key32(key->tun_id)),
+ 				    ntohl(md->u.index), truncate, true);
++		proto = htons(ETH_P_ERSPAN);
+ 	} else if (version == 2) {
+ 		erspan_build_header_v2(skb,
+ 				       ntohl(tunnel_id_to_key32(key->tun_id)),
+ 				       md->u.md2.dir,
+ 				       get_hwid(&md->u.md2),
+ 				       truncate, true);
++		proto = htons(ETH_P_ERSPAN2);
+ 	} else {
+ 		goto err_free_rt;
+ 	}
+ 
+ 	gre_build_header(skb, 8, TUNNEL_SEQ,
+-			 htons(ETH_P_ERSPAN), 0, htonl(tunnel->o_seqno++));
++			 proto, 0, htonl(tunnel->o_seqno++));
+ 
+ 	df = key->tun_flags & TUNNEL_DONT_FRAGMENT ?  htons(IP_DF) : 0;
+ 
+@@ -722,12 +723,13 @@ static netdev_tx_t erspan_xmit(struct sk_buff *skb,
+ {
+ 	struct ip_tunnel *tunnel = netdev_priv(dev);
+ 	bool truncate = false;
++	__be16 proto;
+ 
+ 	if (!pskb_inet_may_pull(skb))
+ 		goto free_skb;
+ 
+ 	if (tunnel->collect_md) {
+-		erspan_fb_xmit(skb, dev, skb->protocol);
++		erspan_fb_xmit(skb, dev);
+ 		return NETDEV_TX_OK;
+ 	}
+ 
+@@ -743,19 +745,22 @@ static netdev_tx_t erspan_xmit(struct sk_buff *skb,
+ 	}
+ 
+ 	/* Push ERSPAN header */
+-	if (tunnel->erspan_ver == 1)
++	if (tunnel->erspan_ver == 1) {
+ 		erspan_build_header(skb, ntohl(tunnel->parms.o_key),
+ 				    tunnel->index,
+ 				    truncate, true);
+-	else if (tunnel->erspan_ver == 2)
++		proto = htons(ETH_P_ERSPAN);
++	} else if (tunnel->erspan_ver == 2) {
+ 		erspan_build_header_v2(skb, ntohl(tunnel->parms.o_key),
+ 				       tunnel->dir, tunnel->hwid,
+ 				       truncate, true);
+-	else
++		proto = htons(ETH_P_ERSPAN2);
++	} else {
+ 		goto free_skb;
++	}
+ 
+ 	tunnel->parms.o_flags &= ~TUNNEL_KEY;
+-	__gre_xmit(skb, dev, &tunnel->parms.iph, htons(ETH_P_ERSPAN));
++	__gre_xmit(skb, dev, &tunnel->parms.iph, proto);
+ 	return NETDEV_TX_OK;
+ 
+ free_skb:
+diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c
+index 27c863f6dd83..6f977b0fef54 100644
+--- a/net/ipv4/ip_input.c
++++ b/net/ipv4/ip_input.c
+@@ -489,6 +489,7 @@ static struct sk_buff *ip_rcv_core(struct sk_buff *skb, struct net *net)
+ 		goto drop;
+ 	}
+ 
++	iph = ip_hdr(skb);
+ 	skb->transport_header = skb->network_header + iph->ihl*4;
+ 
+ 	/* Remove any debris in the socket control block */
+diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
+index a32a0f4cc138..87fe44197aa1 100644
+--- a/net/ipv4/tcp.c
++++ b/net/ipv4/tcp.c
+@@ -1186,7 +1186,7 @@ int tcp_sendmsg_locked(struct sock *sk, struct msghdr *msg, size_t size)
+ 	flags = msg->msg_flags;
+ 
+ 	if (flags & MSG_ZEROCOPY && size && sock_flag(sk, SOCK_ZEROCOPY)) {
+-		if (sk->sk_state != TCP_ESTABLISHED) {
++		if ((1 << sk->sk_state) & ~(TCPF_ESTABLISHED | TCPF_CLOSE_WAIT)) {
+ 			err = -EINVAL;
+ 			goto out_err;
+ 		}
+diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
+index f8183fdce5b2..e45a5e19e509 100644
+--- a/net/ipv4/udp.c
++++ b/net/ipv4/udp.c
+@@ -785,15 +785,23 @@ static int udp_send_skb(struct sk_buff *skb, struct flowi4 *fl4,
+ 		const int hlen = skb_network_header_len(skb) +
+ 				 sizeof(struct udphdr);
+ 
+-		if (hlen + cork->gso_size > cork->fragsize)
++		if (hlen + cork->gso_size > cork->fragsize) {
++			kfree_skb(skb);
+ 			return -EINVAL;
+-		if (skb->len > cork->gso_size * UDP_MAX_SEGMENTS)
++		}
++		if (skb->len > cork->gso_size * UDP_MAX_SEGMENTS) {
++			kfree_skb(skb);
+ 			return -EINVAL;
+-		if (sk->sk_no_check_tx)
++		}
++		if (sk->sk_no_check_tx) {
++			kfree_skb(skb);
+ 			return -EINVAL;
++		}
+ 		if (skb->ip_summed != CHECKSUM_PARTIAL || is_udplite ||
+-		    dst_xfrm(skb_dst(skb)))
++		    dst_xfrm(skb_dst(skb))) {
++			kfree_skb(skb);
+ 			return -EIO;
++		}
+ 
+ 		skb_shinfo(skb)->gso_size = cork->gso_size;
+ 		skb_shinfo(skb)->gso_type = SKB_GSO_UDP_L4;
+diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c
+index c270726b01b0..345e6839f031 100644
+--- a/net/ipv6/ip6_gre.c
++++ b/net/ipv6/ip6_gre.c
+@@ -938,6 +938,7 @@ static netdev_tx_t ip6erspan_tunnel_xmit(struct sk_buff *skb,
+ 	__u8 dsfield = false;
+ 	struct flowi6 fl6;
+ 	int err = -EINVAL;
++	__be16 proto;
+ 	__u32 mtu;
+ 	int nhoff;
+ 	int thoff;
+@@ -1051,8 +1052,9 @@ static netdev_tx_t ip6erspan_tunnel_xmit(struct sk_buff *skb,
+ 	}
+ 
+ 	/* Push GRE header. */
+-	gre_build_header(skb, 8, TUNNEL_SEQ,
+-			 htons(ETH_P_ERSPAN), 0, htonl(t->o_seqno++));
++	proto = (t->parms.erspan_ver == 1) ? htons(ETH_P_ERSPAN)
++					   : htons(ETH_P_ERSPAN2);
++	gre_build_header(skb, 8, TUNNEL_SEQ, proto, 0, htonl(t->o_seqno++));
+ 
+ 	/* TooBig packet may have updated dst->dev's mtu */
+ 	if (!t->parms.collect_md && dst && dst_mtu(dst) > dst->dev->mtu)
+@@ -1185,6 +1187,10 @@ static void ip6gre_tnl_copy_tnl_parm(struct ip6_tnl *t,
+ 	t->parms.i_flags = p->i_flags;
+ 	t->parms.o_flags = p->o_flags;
+ 	t->parms.fwmark = p->fwmark;
++	t->parms.erspan_ver = p->erspan_ver;
++	t->parms.index = p->index;
++	t->parms.dir = p->dir;
++	t->parms.hwid = p->hwid;
+ 	dst_cache_reset(&t->dst_cache);
+ }
+ 
+@@ -2047,9 +2053,9 @@ static int ip6gre_changelink(struct net_device *dev, struct nlattr *tb[],
+ 			     struct nlattr *data[],
+ 			     struct netlink_ext_ack *extack)
+ {
+-	struct ip6gre_net *ign = net_generic(dev_net(dev), ip6gre_net_id);
++	struct ip6_tnl *t = netdev_priv(dev);
++	struct ip6gre_net *ign = net_generic(t->net, ip6gre_net_id);
+ 	struct __ip6_tnl_parm p;
+-	struct ip6_tnl *t;
+ 
+ 	t = ip6gre_changelink_common(dev, tb, data, &p, extack);
+ 	if (IS_ERR(t))
+diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
+index b36694b6716e..76ba2f34ef6b 100644
+--- a/net/ipv6/udp.c
++++ b/net/ipv6/udp.c
+@@ -1056,15 +1056,23 @@ static int udp_v6_send_skb(struct sk_buff *skb, struct flowi6 *fl6,
+ 		const int hlen = skb_network_header_len(skb) +
+ 				 sizeof(struct udphdr);
+ 
+-		if (hlen + cork->gso_size > cork->fragsize)
++		if (hlen + cork->gso_size > cork->fragsize) {
++			kfree_skb(skb);
+ 			return -EINVAL;
+-		if (skb->len > cork->gso_size * UDP_MAX_SEGMENTS)
++		}
++		if (skb->len > cork->gso_size * UDP_MAX_SEGMENTS) {
++			kfree_skb(skb);
+ 			return -EINVAL;
+-		if (udp_sk(sk)->no_check6_tx)
++		}
++		if (udp_sk(sk)->no_check6_tx) {
++			kfree_skb(skb);
+ 			return -EINVAL;
++		}
+ 		if (skb->ip_summed != CHECKSUM_PARTIAL || is_udplite ||
+-		    dst_xfrm(skb_dst(skb)))
++		    dst_xfrm(skb_dst(skb))) {
++			kfree_skb(skb);
+ 			return -EIO;
++		}
+ 
+ 		skb_shinfo(skb)->gso_size = cork->gso_size;
+ 		skb_shinfo(skb)->gso_type = SKB_GSO_UDP_L4;
+diff --git a/net/openvswitch/flow_netlink.c b/net/openvswitch/flow_netlink.c
+index 865ecef68196..c7b6010b2c09 100644
+--- a/net/openvswitch/flow_netlink.c
++++ b/net/openvswitch/flow_netlink.c
+@@ -500,7 +500,7 @@ static int __parse_flow_nlattrs(const struct nlattr *attr,
+ 			return -EINVAL;
+ 		}
+ 
+-		if (!nz || !is_all_zero(nla_data(nla), expected_len)) {
++		if (!nz || !is_all_zero(nla_data(nla), nla_len(nla))) {
+ 			attrs |= 1 << type;
+ 			a[type] = nla;
+ 		}
+diff --git a/net/sched/act_tunnel_key.c b/net/sched/act_tunnel_key.c
+index 681f6f04e7da..0f6601fdf889 100644
+--- a/net/sched/act_tunnel_key.c
++++ b/net/sched/act_tunnel_key.c
+@@ -197,6 +197,15 @@ static const struct nla_policy tunnel_key_policy[TCA_TUNNEL_KEY_MAX + 1] = {
+ 	[TCA_TUNNEL_KEY_ENC_TTL]      = { .type = NLA_U8 },
+ };
+ 
++static void tunnel_key_release_params(struct tcf_tunnel_key_params *p)
++{
++	if (!p)
++		return;
++	if (p->tcft_action == TCA_TUNNEL_KEY_ACT_SET)
++		dst_release(&p->tcft_enc_metadata->dst);
++	kfree_rcu(p, rcu);
++}
++
+ static int tunnel_key_init(struct net *net, struct nlattr *nla,
+ 			   struct nlattr *est, struct tc_action **a,
+ 			   int ovr, int bind, bool rtnl_held,
+@@ -360,8 +369,7 @@ static int tunnel_key_init(struct net *net, struct nlattr *nla,
+ 	rcu_swap_protected(t->params, params_new,
+ 			   lockdep_is_held(&t->tcf_lock));
+ 	spin_unlock_bh(&t->tcf_lock);
+-	if (params_new)
+-		kfree_rcu(params_new, rcu);
++	tunnel_key_release_params(params_new);
+ 
+ 	if (ret == ACT_P_CREATED)
+ 		tcf_idr_insert(tn, *a);
+@@ -385,12 +393,7 @@ static void tunnel_key_release(struct tc_action *a)
+ 	struct tcf_tunnel_key_params *params;
+ 
+ 	params = rcu_dereference_protected(t->params, 1);
+-	if (params) {
+-		if (params->tcft_action == TCA_TUNNEL_KEY_ACT_SET)
+-			dst_release(&params->tcft_enc_metadata->dst);
+-
+-		kfree_rcu(params, rcu);
+-	}
++	tunnel_key_release_params(params);
+ }
+ 
+ static int tunnel_key_geneve_opts_dump(struct sk_buff *skb,
+diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
+index 70f144ac5e1d..2167c6ca55e3 100644
+--- a/net/sched/cls_api.c
++++ b/net/sched/cls_api.c
+@@ -960,7 +960,6 @@ static int tcf_block_cb_call(struct tcf_block *block, enum tc_setup_type type,
+ int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp,
+ 		 struct tcf_result *res, bool compat_mode)
+ {
+-	__be16 protocol = tc_skb_protocol(skb);
+ #ifdef CONFIG_NET_CLS_ACT
+ 	const int max_reclassify_loop = 4;
+ 	const struct tcf_proto *orig_tp = tp;
+@@ -970,6 +969,7 @@ int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp,
+ reclassify:
+ #endif
+ 	for (; tp; tp = rcu_dereference_bh(tp->next)) {
++		__be16 protocol = tc_skb_protocol(skb);
+ 		int err;
+ 
+ 		if (tp->protocol != protocol &&
+@@ -1002,7 +1002,6 @@ reset:
+ 	}
+ 
+ 	tp = first_tp;
+-	protocol = tc_skb_protocol(skb);
+ 	goto reclassify;
+ #endif
+ }
+diff --git a/net/sched/cls_flower.c b/net/sched/cls_flower.c
+index 7fade7107f95..84893bc67531 100644
+--- a/net/sched/cls_flower.c
++++ b/net/sched/cls_flower.c
+@@ -1176,17 +1176,23 @@ static int fl_change(struct net *net, struct sk_buff *in_skb,
+ 	struct cls_fl_head *head = rtnl_dereference(tp->root);
+ 	struct cls_fl_filter *fold = *arg;
+ 	struct cls_fl_filter *fnew;
++	struct fl_flow_mask *mask;
+ 	struct nlattr **tb;
+-	struct fl_flow_mask mask = {};
+ 	int err;
+ 
+ 	if (!tca[TCA_OPTIONS])
+ 		return -EINVAL;
+ 
+-	tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
+-	if (!tb)
++	mask = kzalloc(sizeof(struct fl_flow_mask), GFP_KERNEL);
++	if (!mask)
+ 		return -ENOBUFS;
+ 
++	tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
++	if (!tb) {
++		err = -ENOBUFS;
++		goto errout_mask_alloc;
++	}
++
+ 	err = nla_parse_nested(tb, TCA_FLOWER_MAX, tca[TCA_OPTIONS],
+ 			       fl_policy, NULL);
+ 	if (err < 0)
+@@ -1229,12 +1235,12 @@ static int fl_change(struct net *net, struct sk_buff *in_skb,
+ 		}
+ 	}
+ 
+-	err = fl_set_parms(net, tp, fnew, &mask, base, tb, tca[TCA_RATE], ovr,
++	err = fl_set_parms(net, tp, fnew, mask, base, tb, tca[TCA_RATE], ovr,
+ 			   tp->chain->tmplt_priv, extack);
+ 	if (err)
+ 		goto errout_idr;
+ 
+-	err = fl_check_assign_mask(head, fnew, fold, &mask);
++	err = fl_check_assign_mask(head, fnew, fold, mask);
+ 	if (err)
+ 		goto errout_idr;
+ 
+@@ -1281,6 +1287,7 @@ static int fl_change(struct net *net, struct sk_buff *in_skb,
+ 	}
+ 
+ 	kfree(tb);
++	kfree(mask);
+ 	return 0;
+ 
+ errout_mask:
+@@ -1294,6 +1301,8 @@ errout:
+ 	kfree(fnew);
+ errout_tb:
+ 	kfree(tb);
++errout_mask_alloc:
++	kfree(mask);
+ 	return err;
+ }
+ 
+diff --git a/sound/pci/hda/patch_conexant.c b/sound/pci/hda/patch_conexant.c
+index f9176e3b4d37..31a84a5a1338 100644
+--- a/sound/pci/hda/patch_conexant.c
++++ b/sound/pci/hda/patch_conexant.c
+@@ -931,6 +931,7 @@ static const struct snd_pci_quirk cxt5066_fixups[] = {
+ 	SND_PCI_QUIRK(0x103c, 0x814f, "HP ZBook 15u G3", CXT_FIXUP_MUTE_LED_GPIO),
+ 	SND_PCI_QUIRK(0x103c, 0x822e, "HP ProBook 440 G4", CXT_FIXUP_MUTE_LED_GPIO),
+ 	SND_PCI_QUIRK(0x103c, 0x836e, "HP ProBook 455 G5", CXT_FIXUP_MUTE_LED_GPIO),
++	SND_PCI_QUIRK(0x103c, 0x837f, "HP ProBook 470 G5", CXT_FIXUP_MUTE_LED_GPIO),
+ 	SND_PCI_QUIRK(0x103c, 0x8299, "HP 800 G3 SFF", CXT_FIXUP_HP_MIC_NO_PRESENCE),
+ 	SND_PCI_QUIRK(0x103c, 0x829a, "HP 800 G3 DM", CXT_FIXUP_HP_MIC_NO_PRESENCE),
+ 	SND_PCI_QUIRK(0x103c, 0x8455, "HP Z2 G4", CXT_FIXUP_HP_MIC_NO_PRESENCE),
+diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
+index 8b9f2487969b..f39f34e12fb6 100644
+--- a/sound/pci/hda/patch_realtek.c
++++ b/sound/pci/hda/patch_realtek.c
+@@ -6842,7 +6842,7 @@ static const struct hda_model_fixup alc269_fixup_models[] = {
+ 	{.id = ALC293_FIXUP_LENOVO_SPK_NOISE, .name = "lenovo-spk-noise"},
+ 	{.id = ALC233_FIXUP_LENOVO_LINE2_MIC_HOTKEY, .name = "lenovo-hotkey"},
+ 	{.id = ALC255_FIXUP_DELL_SPK_NOISE, .name = "dell-spk-noise"},
+-	{.id = ALC225_FIXUP_DELL1_MIC_NO_PRESENCE, .name = "alc255-dell1"},
++	{.id = ALC225_FIXUP_DELL1_MIC_NO_PRESENCE, .name = "alc225-dell1"},
+ 	{.id = ALC295_FIXUP_DISABLE_DAC3, .name = "alc295-disable-dac3"},
+ 	{.id = ALC280_FIXUP_HP_HEADSET_MIC, .name = "alc280-hp-headset"},
+ 	{.id = ALC221_FIXUP_HP_FRONT_MIC, .name = "alc221-hp-mic"},
+diff --git a/sound/soc/codecs/rt5514-spi.c b/sound/soc/codecs/rt5514-spi.c
+index 6478d10c4f4a..cdb1f40009ab 100644
+--- a/sound/soc/codecs/rt5514-spi.c
++++ b/sound/soc/codecs/rt5514-spi.c
+@@ -278,6 +278,8 @@ static int rt5514_spi_pcm_probe(struct snd_soc_component *component)
+ 
+ 	rt5514_dsp = devm_kzalloc(component->dev, sizeof(*rt5514_dsp),
+ 			GFP_KERNEL);
++	if (!rt5514_dsp)
++		return -ENOMEM;
+ 
+ 	rt5514_dsp->dev = &rt5514_spi->dev;
+ 	mutex_init(&rt5514_dsp->dma_lock);
+diff --git a/sound/soc/codecs/tlv320aic32x4.c b/sound/soc/codecs/tlv320aic32x4.c
+index e2b5a11b16d1..f03195d2ab2e 100644
+--- a/sound/soc/codecs/tlv320aic32x4.c
++++ b/sound/soc/codecs/tlv320aic32x4.c
+@@ -822,6 +822,10 @@ static int aic32x4_set_bias_level(struct snd_soc_component *component,
+ 	case SND_SOC_BIAS_PREPARE:
+ 		break;
+ 	case SND_SOC_BIAS_STANDBY:
++		/* Initial cold start */
++		if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF)
++			break;
++
+ 		/* Switch off BCLK_N Divider */
+ 		snd_soc_component_update_bits(component, AIC32X4_BCLKN,
+ 				    AIC32X4_BCLKEN, 0);
+diff --git a/sound/soc/intel/atom/sst-mfld-platform-pcm.c b/sound/soc/intel/atom/sst-mfld-platform-pcm.c
+index 6c36da560877..e662400873ec 100644
+--- a/sound/soc/intel/atom/sst-mfld-platform-pcm.c
++++ b/sound/soc/intel/atom/sst-mfld-platform-pcm.c
+@@ -399,7 +399,13 @@ static int sst_media_hw_params(struct snd_pcm_substream *substream,
+ 				struct snd_pcm_hw_params *params,
+ 				struct snd_soc_dai *dai)
+ {
+-	snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params));
++	int ret;
++
++	ret =
++		snd_pcm_lib_malloc_pages(substream,
++				params_buffer_bytes(params));
++	if (ret)
++		return ret;
+ 	memset(substream->runtime->dma_area, 0, params_buffer_bytes(params));
+ 	return 0;
+ }
+diff --git a/tools/testing/selftests/x86/protection_keys.c b/tools/testing/selftests/x86/protection_keys.c
+index 460b4bdf4c1e..5d546dcdbc80 100644
+--- a/tools/testing/selftests/x86/protection_keys.c
++++ b/tools/testing/selftests/x86/protection_keys.c
+@@ -1133,6 +1133,21 @@ void test_pkey_syscalls_bad_args(int *ptr, u16 pkey)
+ 	pkey_assert(err);
+ }
+ 
++void become_child(void)
++{
++	pid_t forkret;
++
++	forkret = fork();
++	pkey_assert(forkret >= 0);
++	dprintf3("[%d] fork() ret: %d\n", getpid(), forkret);
++
++	if (!forkret) {
++		/* in the child */
++		return;
++	}
++	exit(0);
++}
++
+ /* Assumes that all pkeys other than 'pkey' are unallocated */
+ void test_pkey_alloc_exhaust(int *ptr, u16 pkey)
+ {
+@@ -1141,7 +1156,7 @@ void test_pkey_alloc_exhaust(int *ptr, u16 pkey)
+ 	int nr_allocated_pkeys = 0;
+ 	int i;
+ 
+-	for (i = 0; i < NR_PKEYS*2; i++) {
++	for (i = 0; i < NR_PKEYS*3; i++) {
+ 		int new_pkey;
+ 		dprintf1("%s() alloc loop: %d\n", __func__, i);
+ 		new_pkey = alloc_pkey();
+@@ -1152,20 +1167,26 @@ void test_pkey_alloc_exhaust(int *ptr, u16 pkey)
+ 		if ((new_pkey == -1) && (errno == ENOSPC)) {
+ 			dprintf2("%s() failed to allocate pkey after %d tries\n",
+ 				__func__, nr_allocated_pkeys);
+-			break;
++		} else {
++			/*
++			 * Ensure the number of successes never
++			 * exceeds the number of keys supported
++			 * in the hardware.
++			 */
++			pkey_assert(nr_allocated_pkeys < NR_PKEYS);
++			allocated_pkeys[nr_allocated_pkeys++] = new_pkey;
+ 		}
+-		pkey_assert(nr_allocated_pkeys < NR_PKEYS);
+-		allocated_pkeys[nr_allocated_pkeys++] = new_pkey;
++
++		/*
++		 * Make sure that allocation state is properly
++		 * preserved across fork().
++		 */
++		if (i == NR_PKEYS*2)
++			become_child();
+ 	}
+ 
+ 	dprintf3("%s()::%d\n", __func__, __LINE__);
+ 
+-	/*
+-	 * ensure it did not reach the end of the loop without
+-	 * failure:
+-	 */
+-	pkey_assert(i < NR_PKEYS*2);
+-
+ 	/*
+ 	 * There are 16 pkeys supported in hardware.  Three are
+ 	 * allocated by the time we get here: