proj/linux-patches: Linux patch 4.9.1594.9-161

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

2 files changed, 2430 insertions, 0 deletions

diff --git a/0000_README b/0000_README
index 0d0c627b..53c6c44c 100644
--- a/0000_README
+++ b/0000_README
@@ -675,6 +675,10 @@ Patch:  1157_linux-4.9.158.patch
 From:   http://www.k5rnel.org
 Desc:   Linux 4.9.158
 
+Patch:  1158_linux-4.9.159.patch
+From:   http://www.k5rnel.org
+Desc:   Linux 4.9.159
+
 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/1158_linux-4.9.159.patch b/1158_linux-4.9.159.patch
new file mode 100644
index 00000000..fe0e636c
--- /dev/null
+++ b/1158_linux-4.9.159.patch
@@ -0,0 +1,2426 @@
+diff --git a/Documentation/devicetree/bindings/eeprom/eeprom.txt b/Documentation/devicetree/bindings/eeprom/eeprom.txt
+index 735bc94444bb..4dcce8ee5cee 100644
+--- a/Documentation/devicetree/bindings/eeprom/eeprom.txt
++++ b/Documentation/devicetree/bindings/eeprom/eeprom.txt
+@@ -6,7 +6,8 @@ Required properties:
+ 
+ 	"atmel,24c00", "atmel,24c01", "atmel,24c02", "atmel,24c04",
+ 	"atmel,24c08", "atmel,24c16", "atmel,24c32", "atmel,24c64",
+-	"atmel,24c128", "atmel,24c256", "atmel,24c512", "atmel,24c1024"
++	"atmel,24c128", "atmel,24c256", "atmel,24c512", "atmel,24c1024",
++	"atmel,24c2048"
+ 
+ 	"catalyst,24c32"
+ 
+@@ -17,7 +18,7 @@ Required properties:
+ 	 If there is no specific driver for <manufacturer>, a generic
+ 	 driver based on <type> is selected. Possible types are:
+ 	 "24c00", "24c01", "24c02", "24c04", "24c08", "24c16", "24c32", "24c64",
+-	 "24c128", "24c256", "24c512", "24c1024", "spd"
++	 "24c128", "24c256", "24c512", "24c1024", "24c2048", "spd"
+ 
+   - reg : the I2C address of the EEPROM
+ 
+diff --git a/Makefile b/Makefile
+index 2b8434aaeece..a452ead13b1e 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 9
+-SUBLEVEL = 158
++SUBLEVEL = 159
+ EXTRAVERSION =
+ NAME = Roaring Lionus
+ 
+diff --git a/arch/alpha/include/asm/irq.h b/arch/alpha/include/asm/irq.h
+index 06377400dc09..469642801a68 100644
+--- a/arch/alpha/include/asm/irq.h
++++ b/arch/alpha/include/asm/irq.h
+@@ -55,15 +55,15 @@
+ 
+ #elif defined(CONFIG_ALPHA_DP264) || \
+       defined(CONFIG_ALPHA_LYNX)  || \
+-      defined(CONFIG_ALPHA_SHARK) || \
+-      defined(CONFIG_ALPHA_EIGER)
++      defined(CONFIG_ALPHA_SHARK)
+ # define NR_IRQS	64
+ 
+ #elif defined(CONFIG_ALPHA_TITAN)
+ #define NR_IRQS		80
+ 
+ #elif defined(CONFIG_ALPHA_RAWHIDE) || \
+-	defined(CONFIG_ALPHA_TAKARA)
++      defined(CONFIG_ALPHA_TAKARA) || \
++      defined(CONFIG_ALPHA_EIGER)
+ # define NR_IRQS	128
+ 
+ #elif defined(CONFIG_ALPHA_WILDFIRE)
+diff --git a/arch/alpha/mm/fault.c b/arch/alpha/mm/fault.c
+index 83e9eee57a55..f70663127aad 100644
+--- a/arch/alpha/mm/fault.c
++++ b/arch/alpha/mm/fault.c
+@@ -77,7 +77,7 @@ __load_new_mm_context(struct mm_struct *next_mm)
+ /* Macro for exception fixup code to access integer registers.  */
+ #define dpf_reg(r)							\
+ 	(((unsigned long *)regs)[(r) <= 8 ? (r) : (r) <= 15 ? (r)-16 :	\
+-				 (r) <= 18 ? (r)+8 : (r)-10])
++				 (r) <= 18 ? (r)+10 : (r)-10])
+ 
+ asmlinkage void
+ do_page_fault(unsigned long address, unsigned long mmcsr,
+diff --git a/arch/arm/boot/dts/da850-evm.dts b/arch/arm/boot/dts/da850-evm.dts
+index 78492a0bbbab..3c58ec707ea9 100644
+--- a/arch/arm/boot/dts/da850-evm.dts
++++ b/arch/arm/boot/dts/da850-evm.dts
+@@ -156,7 +156,7 @@
+ 
+ 	sound {
+ 		compatible = "simple-audio-card";
+-		simple-audio-card,name = "DA850/OMAP-L138 EVM";
++		simple-audio-card,name = "DA850-OMAPL138 EVM";
+ 		simple-audio-card,widgets =
+ 			"Line", "Line In",
+ 			"Line", "Line Out";
+diff --git a/arch/arm/boot/dts/da850-lcdk.dts b/arch/arm/boot/dts/da850-lcdk.dts
+index 7b8ab21fed6c..920e64cdb673 100644
+--- a/arch/arm/boot/dts/da850-lcdk.dts
++++ b/arch/arm/boot/dts/da850-lcdk.dts
+@@ -26,7 +26,7 @@
+ 
+ 	sound {
+ 		compatible = "simple-audio-card";
+-		simple-audio-card,name = "DA850/OMAP-L138 LCDK";
++		simple-audio-card,name = "DA850-OMAPL138 LCDK";
+ 		simple-audio-card,widgets =
+ 			"Line", "Line In",
+ 			"Line", "Line Out";
+diff --git a/arch/arm/boot/dts/kirkwood-dnskw.dtsi b/arch/arm/boot/dts/kirkwood-dnskw.dtsi
+index d8fca9db46d0..dddbc0d03da5 100644
+--- a/arch/arm/boot/dts/kirkwood-dnskw.dtsi
++++ b/arch/arm/boot/dts/kirkwood-dnskw.dtsi
+@@ -35,8 +35,8 @@
+ 		compatible = "gpio-fan";
+ 		pinctrl-0 = <&pmx_fan_high_speed &pmx_fan_low_speed>;
+ 		pinctrl-names = "default";
+-		gpios = <&gpio1 14 GPIO_ACTIVE_LOW
+-			 &gpio1 13 GPIO_ACTIVE_LOW>;
++		gpios = <&gpio1 14 GPIO_ACTIVE_HIGH
++			 &gpio1 13 GPIO_ACTIVE_HIGH>;
+ 		gpio-fan,speed-map = <0    0
+ 				      3000 1
+ 				      6000 2>;
+diff --git a/arch/arm/include/asm/assembler.h b/arch/arm/include/asm/assembler.h
+index e616f61f859d..7d727506096f 100644
+--- a/arch/arm/include/asm/assembler.h
++++ b/arch/arm/include/asm/assembler.h
+@@ -465,6 +465,17 @@ THUMB(	orr	\reg , \reg , #PSR_T_BIT	)
+ #endif
+ 	.endm
+ 
++	.macro uaccess_mask_range_ptr, addr:req, size:req, limit:req, tmp:req
++#ifdef CONFIG_CPU_SPECTRE
++	sub	\tmp, \limit, #1
++	subs	\tmp, \tmp, \addr	@ tmp = limit - 1 - addr
++	addhs	\tmp, \tmp, #1		@ if (tmp >= 0) {
++	subhss	\tmp, \tmp, \size	@ tmp = limit - (addr + size) }
++	movlo	\addr, #0		@ if (tmp < 0) addr = NULL
++	csdb
++#endif
++	.endm
++
+ 	.macro	uaccess_disable, tmp, isb=1
+ #ifdef CONFIG_CPU_SW_DOMAIN_PAN
+ 	/*
+diff --git a/arch/arm/include/asm/cputype.h b/arch/arm/include/asm/cputype.h
+index c55db1e22f0c..b9356dbfded0 100644
+--- a/arch/arm/include/asm/cputype.h
++++ b/arch/arm/include/asm/cputype.h
+@@ -106,6 +106,7 @@
+ #define ARM_CPU_PART_SCORPION		0x510002d0
+ 
+ extern unsigned int processor_id;
++struct proc_info_list *lookup_processor(u32 midr);
+ 
+ #ifdef CONFIG_CPU_CP15
+ #define read_cpuid(reg)							\
+diff --git a/arch/arm/include/asm/proc-fns.h b/arch/arm/include/asm/proc-fns.h
+index f379f5f849a9..1bfcc3bcfc6d 100644
+--- a/arch/arm/include/asm/proc-fns.h
++++ b/arch/arm/include/asm/proc-fns.h
+@@ -23,7 +23,7 @@ struct mm_struct;
+ /*
+  * Don't change this structure - ASM code relies on it.
+  */
+-extern struct processor {
++struct processor {
+ 	/* MISC
+ 	 * get data abort address/flags
+ 	 */
+@@ -79,9 +79,13 @@ extern struct processor {
+ 	unsigned int suspend_size;
+ 	void (*do_suspend)(void *);
+ 	void (*do_resume)(void *);
+-} processor;
++};
+ 
+ #ifndef MULTI_CPU
++static inline void init_proc_vtable(const struct processor *p)
++{
++}
++
+ extern void cpu_proc_init(void);
+ extern void cpu_proc_fin(void);
+ extern int cpu_do_idle(void);
+@@ -98,17 +102,50 @@ extern void cpu_reset(unsigned long addr) __attribute__((noreturn));
+ extern void cpu_do_suspend(void *);
+ extern void cpu_do_resume(void *);
+ #else
+-#define cpu_proc_init			processor._proc_init
+-#define cpu_proc_fin			processor._proc_fin
+-#define cpu_reset			processor.reset
+-#define cpu_do_idle			processor._do_idle
+-#define cpu_dcache_clean_area		processor.dcache_clean_area
+-#define cpu_set_pte_ext			processor.set_pte_ext
+-#define cpu_do_switch_mm		processor.switch_mm
+ 
+-/* These three are private to arch/arm/kernel/suspend.c */
+-#define cpu_do_suspend			processor.do_suspend
+-#define cpu_do_resume			processor.do_resume
++extern struct processor processor;
++#if defined(CONFIG_BIG_LITTLE) && defined(CONFIG_HARDEN_BRANCH_PREDICTOR)
++#include <linux/smp.h>
++/*
++ * This can't be a per-cpu variable because we need to access it before
++ * per-cpu has been initialised.  We have a couple of functions that are
++ * called in a pre-emptible context, and so can't use smp_processor_id()
++ * there, hence PROC_TABLE().  We insist in init_proc_vtable() that the
++ * function pointers for these are identical across all CPUs.
++ */
++extern struct processor *cpu_vtable[];
++#define PROC_VTABLE(f)			cpu_vtable[smp_processor_id()]->f
++#define PROC_TABLE(f)			cpu_vtable[0]->f
++static inline void init_proc_vtable(const struct processor *p)
++{
++	unsigned int cpu = smp_processor_id();
++	*cpu_vtable[cpu] = *p;
++	WARN_ON_ONCE(cpu_vtable[cpu]->dcache_clean_area !=
++		     cpu_vtable[0]->dcache_clean_area);
++	WARN_ON_ONCE(cpu_vtable[cpu]->set_pte_ext !=
++		     cpu_vtable[0]->set_pte_ext);
++}
++#else
++#define PROC_VTABLE(f)			processor.f
++#define PROC_TABLE(f)			processor.f
++static inline void init_proc_vtable(const struct processor *p)
++{
++	processor = *p;
++}
++#endif
++
++#define cpu_proc_init			PROC_VTABLE(_proc_init)
++#define cpu_check_bugs			PROC_VTABLE(check_bugs)
++#define cpu_proc_fin			PROC_VTABLE(_proc_fin)
++#define cpu_reset			PROC_VTABLE(reset)
++#define cpu_do_idle			PROC_VTABLE(_do_idle)
++#define cpu_dcache_clean_area		PROC_TABLE(dcache_clean_area)
++#define cpu_set_pte_ext			PROC_TABLE(set_pte_ext)
++#define cpu_do_switch_mm		PROC_VTABLE(switch_mm)
++
++/* These two are private to arch/arm/kernel/suspend.c */
++#define cpu_do_suspend			PROC_VTABLE(do_suspend)
++#define cpu_do_resume			PROC_VTABLE(do_resume)
+ #endif
+ 
+ extern void cpu_resume(void);
+diff --git a/arch/arm/include/asm/thread_info.h b/arch/arm/include/asm/thread_info.h
+index 57d2ad9c75ca..df8420672c7e 100644
+--- a/arch/arm/include/asm/thread_info.h
++++ b/arch/arm/include/asm/thread_info.h
+@@ -124,8 +124,8 @@ extern void vfp_flush_hwstate(struct thread_info *);
+ struct user_vfp;
+ struct user_vfp_exc;
+ 
+-extern int vfp_preserve_user_clear_hwstate(struct user_vfp __user *,
+-					   struct user_vfp_exc __user *);
++extern int vfp_preserve_user_clear_hwstate(struct user_vfp *,
++					   struct user_vfp_exc *);
+ extern int vfp_restore_user_hwstate(struct user_vfp *,
+ 				    struct user_vfp_exc *);
+ #endif
+diff --git a/arch/arm/include/asm/uaccess.h b/arch/arm/include/asm/uaccess.h
+index 7b17460127fd..0f6c6b873bc5 100644
+--- a/arch/arm/include/asm/uaccess.h
++++ b/arch/arm/include/asm/uaccess.h
+@@ -99,6 +99,14 @@ extern int __put_user_bad(void);
+ static inline void set_fs(mm_segment_t fs)
+ {
+ 	current_thread_info()->addr_limit = fs;
++
++	/*
++	 * Prevent a mispredicted conditional call to set_fs from forwarding
++	 * the wrong address limit to access_ok under speculation.
++	 */
++	dsb(nsh);
++	isb();
++
+ 	modify_domain(DOMAIN_KERNEL, fs ? DOMAIN_CLIENT : DOMAIN_MANAGER);
+ }
+ 
+@@ -121,6 +129,32 @@ static inline void set_fs(mm_segment_t fs)
+ #define __inttype(x) \
+ 	__typeof__(__builtin_choose_expr(sizeof(x) > sizeof(0UL), 0ULL, 0UL))
+ 
++/*
++ * Sanitise a uaccess pointer such that it becomes NULL if addr+size
++ * is above the current addr_limit.
++ */
++#define uaccess_mask_range_ptr(ptr, size)			\
++	((__typeof__(ptr))__uaccess_mask_range_ptr(ptr, size))
++static inline void __user *__uaccess_mask_range_ptr(const void __user *ptr,
++						    size_t size)
++{
++	void __user *safe_ptr = (void __user *)ptr;
++	unsigned long tmp;
++
++	asm volatile(
++	"	sub	%1, %3, #1\n"
++	"	subs	%1, %1, %0\n"
++	"	addhs	%1, %1, #1\n"
++	"	subhss	%1, %1, %2\n"
++	"	movlo	%0, #0\n"
++	: "+r" (safe_ptr), "=&r" (tmp)
++	: "r" (size), "r" (current_thread_info()->addr_limit)
++	: "cc");
++
++	csdb();
++	return safe_ptr;
++}
++
+ /*
+  * Single-value transfer routines.  They automatically use the right
+  * size if we just have the right pointer type.  Note that the functions
+@@ -392,6 +426,14 @@ do {									\
+ 	__pu_err;							\
+ })
+ 
++#ifdef CONFIG_CPU_SPECTRE
++/*
++ * When mitigating Spectre variant 1.1, all accessors need to include
++ * verification of the address space.
++ */
++#define __put_user(x, ptr) put_user(x, ptr)
++
++#else
+ #define __put_user(x, ptr)						\
+ ({									\
+ 	long __pu_err = 0;						\
+@@ -399,12 +441,6 @@ do {									\
+ 	__pu_err;							\
+ })
+ 
+-#define __put_user_error(x, ptr, err)					\
+-({									\
+-	__put_user_switch((x), (ptr), (err), __put_user_nocheck);	\
+-	(void) 0;							\
+-})
+-
+ #define __put_user_nocheck(x, __pu_ptr, __err, __size)			\
+ 	do {								\
+ 		unsigned long __pu_addr = (unsigned long)__pu_ptr;	\
+@@ -484,6 +520,7 @@ do {									\
+ 	: "r" (x), "i" (-EFAULT)				\
+ 	: "cc")
+ 
++#endif /* !CONFIG_CPU_SPECTRE */
+ 
+ #ifdef CONFIG_MMU
+ extern unsigned long __must_check
+diff --git a/arch/arm/kernel/bugs.c b/arch/arm/kernel/bugs.c
+index 7be511310191..d41d3598e5e5 100644
+--- a/arch/arm/kernel/bugs.c
++++ b/arch/arm/kernel/bugs.c
+@@ -6,8 +6,8 @@
+ void check_other_bugs(void)
+ {
+ #ifdef MULTI_CPU
+-	if (processor.check_bugs)
+-		processor.check_bugs();
++	if (cpu_check_bugs)
++		cpu_check_bugs();
+ #endif
+ }
+ 
+diff --git a/arch/arm/kernel/head-common.S b/arch/arm/kernel/head-common.S
+index 8733012d231f..7e662bdd5cb3 100644
+--- a/arch/arm/kernel/head-common.S
++++ b/arch/arm/kernel/head-common.S
+@@ -122,6 +122,9 @@ __mmap_switched_data:
+ 	.long	init_thread_union + THREAD_START_SP @ sp
+ 	.size	__mmap_switched_data, . - __mmap_switched_data
+ 
++	__FINIT
++	.text
++
+ /*
+  * This provides a C-API version of __lookup_processor_type
+  */
+@@ -133,9 +136,6 @@ ENTRY(lookup_processor_type)
+ 	ldmfd	sp!, {r4 - r6, r9, pc}
+ ENDPROC(lookup_processor_type)
+ 
+-	__FINIT
+-	.text
+-
+ /*
+  * Read processor ID register (CP#15, CR0), and look up in the linker-built
+  * supported processor list.  Note that we can't use the absolute addresses
+diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
+index f4e54503afa9..4764742db7b0 100644
+--- a/arch/arm/kernel/setup.c
++++ b/arch/arm/kernel/setup.c
+@@ -115,6 +115,11 @@ EXPORT_SYMBOL(elf_hwcap2);
+ 
+ #ifdef MULTI_CPU
+ struct processor processor __ro_after_init;
++#if defined(CONFIG_BIG_LITTLE) && defined(CONFIG_HARDEN_BRANCH_PREDICTOR)
++struct processor *cpu_vtable[NR_CPUS] = {
++	[0] = &processor,
++};
++#endif
+ #endif
+ #ifdef MULTI_TLB
+ struct cpu_tlb_fns cpu_tlb __ro_after_init;
+@@ -667,28 +672,33 @@ static void __init smp_build_mpidr_hash(void)
+ }
+ #endif
+ 
+-static void __init setup_processor(void)
++/*
++ * locate processor in the list of supported processor types.  The linker
++ * builds this table for us from the entries in arch/arm/mm/proc-*.S
++ */
++struct proc_info_list *lookup_processor(u32 midr)
+ {
+-	struct proc_info_list *list;
++	struct proc_info_list *list = lookup_processor_type(midr);
+ 
+-	/*
+-	 * locate processor in the list of supported processor
+-	 * types.  The linker builds this table for us from the
+-	 * entries in arch/arm/mm/proc-*.S
+-	 */
+-	list = lookup_processor_type(read_cpuid_id());
+ 	if (!list) {
+-		pr_err("CPU configuration botched (ID %08x), unable to continue.\n",
+-		       read_cpuid_id());
+-		while (1);
++		pr_err("CPU%u: configuration botched (ID %08x), CPU halted\n",
++		       smp_processor_id(), midr);
++		while (1)
++		/* can't use cpu_relax() here as it may require MMU setup */;
+ 	}
+ 
++	return list;
++}
++
++static void __init setup_processor(void)
++{
++	unsigned int midr = read_cpuid_id();
++	struct proc_info_list *list = lookup_processor(midr);
++
+ 	cpu_name = list->cpu_name;
+ 	__cpu_architecture = __get_cpu_architecture();
+ 
+-#ifdef MULTI_CPU
+-	processor = *list->proc;
+-#endif
++	init_proc_vtable(list->proc);
+ #ifdef MULTI_TLB
+ 	cpu_tlb = *list->tlb;
+ #endif
+@@ -700,7 +710,7 @@ static void __init setup_processor(void)
+ #endif
+ 
+ 	pr_info("CPU: %s [%08x] revision %d (ARMv%s), cr=%08lx\n",
+-		cpu_name, read_cpuid_id(), read_cpuid_id() & 15,
++		list->cpu_name, midr, midr & 15,
+ 		proc_arch[cpu_architecture()], get_cr());
+ 
+ 	snprintf(init_utsname()->machine, __NEW_UTS_LEN + 1, "%s%c",
+diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c
+index 6bee5c9b1133..0a066f03b5ec 100644
+--- a/arch/arm/kernel/signal.c
++++ b/arch/arm/kernel/signal.c
+@@ -94,17 +94,18 @@ static int restore_iwmmxt_context(struct iwmmxt_sigframe *frame)
+ 
+ static int preserve_vfp_context(struct vfp_sigframe __user *frame)
+ {
+-	const unsigned long magic = VFP_MAGIC;
+-	const unsigned long size = VFP_STORAGE_SIZE;
++	struct vfp_sigframe kframe;
+ 	int err = 0;
+ 
+-	__put_user_error(magic, &frame->magic, err);
+-	__put_user_error(size, &frame->size, err);
++	memset(&kframe, 0, sizeof(kframe));
++	kframe.magic = VFP_MAGIC;
++	kframe.size = VFP_STORAGE_SIZE;
+ 
++	err = vfp_preserve_user_clear_hwstate(&kframe.ufp, &kframe.ufp_exc);
+ 	if (err)
+-		return -EFAULT;
++		return err;
+ 
+-	return vfp_preserve_user_clear_hwstate(&frame->ufp, &frame->ufp_exc);
++	return __copy_to_user(frame, &kframe, sizeof(kframe));
+ }
+ 
+ static int restore_vfp_context(struct vfp_sigframe __user *auxp)
+@@ -256,30 +257,35 @@ static int
+ setup_sigframe(struct sigframe __user *sf, struct pt_regs *regs, sigset_t *set)
+ {
+ 	struct aux_sigframe __user *aux;
++	struct sigcontext context;
+ 	int err = 0;
+ 
+-	__put_user_error(regs->ARM_r0, &sf->uc.uc_mcontext.arm_r0, err);
+-	__put_user_error(regs->ARM_r1, &sf->uc.uc_mcontext.arm_r1, err);
+-	__put_user_error(regs->ARM_r2, &sf->uc.uc_mcontext.arm_r2, err);
+-	__put_user_error(regs->ARM_r3, &sf->uc.uc_mcontext.arm_r3, err);
+-	__put_user_error(regs->ARM_r4, &sf->uc.uc_mcontext.arm_r4, err);
+-	__put_user_error(regs->ARM_r5, &sf->uc.uc_mcontext.arm_r5, err);
+-	__put_user_error(regs->ARM_r6, &sf->uc.uc_mcontext.arm_r6, err);
+-	__put_user_error(regs->ARM_r7, &sf->uc.uc_mcontext.arm_r7, err);
+-	__put_user_error(regs->ARM_r8, &sf->uc.uc_mcontext.arm_r8, err);
+-	__put_user_error(regs->ARM_r9, &sf->uc.uc_mcontext.arm_r9, err);
+-	__put_user_error(regs->ARM_r10, &sf->uc.uc_mcontext.arm_r10, err);
+-	__put_user_error(regs->ARM_fp, &sf->uc.uc_mcontext.arm_fp, err);
+-	__put_user_error(regs->ARM_ip, &sf->uc.uc_mcontext.arm_ip, err);
+-	__put_user_error(regs->ARM_sp, &sf->uc.uc_mcontext.arm_sp, err);
+-	__put_user_error(regs->ARM_lr, &sf->uc.uc_mcontext.arm_lr, err);
+-	__put_user_error(regs->ARM_pc, &sf->uc.uc_mcontext.arm_pc, err);
+-	__put_user_error(regs->ARM_cpsr, &sf->uc.uc_mcontext.arm_cpsr, err);
+-
+-	__put_user_error(current->thread.trap_no, &sf->uc.uc_mcontext.trap_no, err);
+-	__put_user_error(current->thread.error_code, &sf->uc.uc_mcontext.error_code, err);
+-	__put_user_error(current->thread.address, &sf->uc.uc_mcontext.fault_address, err);
+-	__put_user_error(set->sig[0], &sf->uc.uc_mcontext.oldmask, err);
++	context = (struct sigcontext) {
++		.arm_r0        = regs->ARM_r0,
++		.arm_r1        = regs->ARM_r1,
++		.arm_r2        = regs->ARM_r2,
++		.arm_r3        = regs->ARM_r3,
++		.arm_r4        = regs->ARM_r4,
++		.arm_r5        = regs->ARM_r5,
++		.arm_r6        = regs->ARM_r6,
++		.arm_r7        = regs->ARM_r7,
++		.arm_r8        = regs->ARM_r8,
++		.arm_r9        = regs->ARM_r9,
++		.arm_r10       = regs->ARM_r10,
++		.arm_fp        = regs->ARM_fp,
++		.arm_ip        = regs->ARM_ip,
++		.arm_sp        = regs->ARM_sp,
++		.arm_lr        = regs->ARM_lr,
++		.arm_pc        = regs->ARM_pc,
++		.arm_cpsr      = regs->ARM_cpsr,
++
++		.trap_no       = current->thread.trap_no,
++		.error_code    = current->thread.error_code,
++		.fault_address = current->thread.address,
++		.oldmask       = set->sig[0],
++	};
++
++	err |= __copy_to_user(&sf->uc.uc_mcontext, &context, sizeof(context));
+ 
+ 	err |= __copy_to_user(&sf->uc.uc_sigmask, set, sizeof(*set));
+ 
+@@ -296,7 +302,7 @@ setup_sigframe(struct sigframe __user *sf, struct pt_regs *regs, sigset_t *set)
+ 	if (err == 0)
+ 		err |= preserve_vfp_context(&aux->vfp);
+ #endif
+-	__put_user_error(0, &aux->end_magic, err);
++	err |= __put_user(0, &aux->end_magic);
+ 
+ 	return err;
+ }
+@@ -428,7 +434,7 @@ setup_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs)
+ 	/*
+ 	 * Set uc.uc_flags to a value which sc.trap_no would never have.
+ 	 */
+-	__put_user_error(0x5ac3c35a, &frame->uc.uc_flags, err);
++	err = __put_user(0x5ac3c35a, &frame->uc.uc_flags);
+ 
+ 	err |= setup_sigframe(frame, regs, set);
+ 	if (err == 0)
+@@ -448,8 +454,8 @@ setup_rt_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs)
+ 
+ 	err |= copy_siginfo_to_user(&frame->info, &ksig->info);
+ 
+-	__put_user_error(0, &frame->sig.uc.uc_flags, err);
+-	__put_user_error(NULL, &frame->sig.uc.uc_link, err);
++	err |= __put_user(0, &frame->sig.uc.uc_flags);
++	err |= __put_user(NULL, &frame->sig.uc.uc_link);
+ 
+ 	err |= __save_altstack(&frame->sig.uc.uc_stack, regs->ARM_sp);
+ 	err |= setup_sigframe(&frame->sig, regs, set);
+diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
+index 4b129aac7233..8faf869e9fb2 100644
+--- a/arch/arm/kernel/smp.c
++++ b/arch/arm/kernel/smp.c
+@@ -27,6 +27,7 @@
+ #include <linux/completion.h>
+ #include <linux/cpufreq.h>
+ #include <linux/irq_work.h>
++#include <linux/slab.h>
+ 
+ #include <linux/atomic.h>
+ #include <asm/bugs.h>
+@@ -40,6 +41,7 @@
+ #include <asm/mmu_context.h>
+ #include <asm/pgtable.h>
+ #include <asm/pgalloc.h>
++#include <asm/procinfo.h>
+ #include <asm/processor.h>
+ #include <asm/sections.h>
+ #include <asm/tlbflush.h>
+@@ -100,6 +102,30 @@ static unsigned long get_arch_pgd(pgd_t *pgd)
+ #endif
+ }
+ 
++#if defined(CONFIG_BIG_LITTLE) && defined(CONFIG_HARDEN_BRANCH_PREDICTOR)
++static int secondary_biglittle_prepare(unsigned int cpu)
++{
++	if (!cpu_vtable[cpu])
++		cpu_vtable[cpu] = kzalloc(sizeof(*cpu_vtable[cpu]), GFP_KERNEL);
++
++	return cpu_vtable[cpu] ? 0 : -ENOMEM;
++}
++
++static void secondary_biglittle_init(void)
++{
++	init_proc_vtable(lookup_processor(read_cpuid_id())->proc);
++}
++#else
++static int secondary_biglittle_prepare(unsigned int cpu)
++{
++	return 0;
++}
++
++static void secondary_biglittle_init(void)
++{
++}
++#endif
++
+ int __cpu_up(unsigned int cpu, struct task_struct *idle)
+ {
+ 	int ret;
+@@ -107,6 +133,10 @@ int __cpu_up(unsigned int cpu, struct task_struct *idle)
+ 	if (!smp_ops.smp_boot_secondary)
+ 		return -ENOSYS;
+ 
++	ret = secondary_biglittle_prepare(cpu);
++	if (ret)
++		return ret;
++
+ 	/*
+ 	 * We need to tell the secondary core where to find
+ 	 * its stack and the page tables.
+@@ -358,6 +388,8 @@ asmlinkage void secondary_start_kernel(void)
+ 	struct mm_struct *mm = &init_mm;
+ 	unsigned int cpu;
+ 
++	secondary_biglittle_init();
++
+ 	/*
+ 	 * The identity mapping is uncached (strongly ordered), so
+ 	 * switch away from it before attempting any exclusive accesses.
+diff --git a/arch/arm/kernel/sys_oabi-compat.c b/arch/arm/kernel/sys_oabi-compat.c
+index 640748e27035..d844c5c9364b 100644
+--- a/arch/arm/kernel/sys_oabi-compat.c
++++ b/arch/arm/kernel/sys_oabi-compat.c
+@@ -276,6 +276,7 @@ asmlinkage long sys_oabi_epoll_wait(int epfd,
+ 				    int maxevents, int timeout)
+ {
+ 	struct epoll_event *kbuf;
++	struct oabi_epoll_event e;
+ 	mm_segment_t fs;
+ 	long ret, err, i;
+ 
+@@ -294,8 +295,11 @@ asmlinkage long sys_oabi_epoll_wait(int epfd,
+ 	set_fs(fs);
+ 	err = 0;
+ 	for (i = 0; i < ret; i++) {
+-		__put_user_error(kbuf[i].events, &events->events, err);
+-		__put_user_error(kbuf[i].data,   &events->data,   err);
++		e.events = kbuf[i].events;
++		e.data = kbuf[i].data;
++		err = __copy_to_user(events, &e, sizeof(e));
++		if (err)
++			break;
+ 		events++;
+ 	}
+ 	kfree(kbuf);
+diff --git a/arch/arm/lib/copy_from_user.S b/arch/arm/lib/copy_from_user.S
+index a826df3d3814..6709a8d33963 100644
+--- a/arch/arm/lib/copy_from_user.S
++++ b/arch/arm/lib/copy_from_user.S
+@@ -93,11 +93,7 @@ ENTRY(arm_copy_from_user)
+ #ifdef CONFIG_CPU_SPECTRE
+ 	get_thread_info r3
+ 	ldr	r3, [r3, #TI_ADDR_LIMIT]
+-	adds	ip, r1, r2	@ ip=addr+size
+-	sub	r3, r3, #1	@ addr_limit - 1
+-	cmpcc	ip, r3		@ if (addr+size > addr_limit - 1)
+-	movcs	r1, #0		@ addr = NULL
+-	csdb
++	uaccess_mask_range_ptr r1, r2, r3, ip
+ #endif
+ 
+ #include "copy_template.S"
+diff --git a/arch/arm/lib/copy_to_user.S b/arch/arm/lib/copy_to_user.S
+index caf5019d8161..970abe521197 100644
+--- a/arch/arm/lib/copy_to_user.S
++++ b/arch/arm/lib/copy_to_user.S
+@@ -94,6 +94,11 @@
+ 
+ ENTRY(__copy_to_user_std)
+ WEAK(arm_copy_to_user)
++#ifdef CONFIG_CPU_SPECTRE
++	get_thread_info r3
++	ldr	r3, [r3, #TI_ADDR_LIMIT]
++	uaccess_mask_range_ptr r0, r2, r3, ip
++#endif
+ 
+ #include "copy_template.S"
+ 
+@@ -108,4 +113,3 @@ ENDPROC(__copy_to_user_std)
+ 	rsb	r0, r0, r2
+ 	copy_abort_end
+ 	.popsection
+-
+diff --git a/arch/arm/lib/uaccess_with_memcpy.c b/arch/arm/lib/uaccess_with_memcpy.c
+index 6bd1089b07e0..f598d792bace 100644
+--- a/arch/arm/lib/uaccess_with_memcpy.c
++++ b/arch/arm/lib/uaccess_with_memcpy.c
+@@ -152,7 +152,8 @@ arm_copy_to_user(void __user *to, const void *from, unsigned long n)
+ 		n = __copy_to_user_std(to, from, n);
+ 		uaccess_restore(ua_flags);
+ 	} else {
+-		n = __copy_to_user_memcpy(to, from, n);
++		n = __copy_to_user_memcpy(uaccess_mask_range_ptr(to, n),
++					  from, n);
+ 	}
+ 	return n;
+ }
+diff --git a/arch/arm/mach-integrator/impd1.c b/arch/arm/mach-integrator/impd1.c
+index ed9a01484030..a52fe871adbc 100644
+--- a/arch/arm/mach-integrator/impd1.c
++++ b/arch/arm/mach-integrator/impd1.c
+@@ -394,7 +394,11 @@ static int __ref impd1_probe(struct lm_device *dev)
+ 					      sizeof(*lookup) + 3 * sizeof(struct gpiod_lookup),
+ 					      GFP_KERNEL);
+ 			chipname = devm_kstrdup(&dev->dev, devname, GFP_KERNEL);
+-			mmciname = kasprintf(GFP_KERNEL, "lm%x:00700", dev->id);
++			mmciname = devm_kasprintf(&dev->dev, GFP_KERNEL,
++						  "lm%x:00700", dev->id);
++			if (!lookup || !chipname || !mmciname)
++				return -ENOMEM;
++
+ 			lookup->dev_id = mmciname;
+ 			/*
+ 			 * Offsets on GPIO block 1:
+diff --git a/arch/arm/mm/proc-macros.S b/arch/arm/mm/proc-macros.S
+index 7d9176c4a21d..f8bb65032b79 100644
+--- a/arch/arm/mm/proc-macros.S
++++ b/arch/arm/mm/proc-macros.S
+@@ -275,6 +275,13 @@
+ 	.endm
+ 
+ .macro define_processor_functions name:req, dabort:req, pabort:req, nommu=0, suspend=0, bugs=0
++/*
++ * If we are building for big.Little with branch predictor hardening,
++ * we need the processor function tables to remain available after boot.
++ */
++#if defined(CONFIG_BIG_LITTLE) && defined(CONFIG_HARDEN_BRANCH_PREDICTOR)
++	.section ".rodata"
++#endif
+ 	.type	\name\()_processor_functions, #object
+ 	.align 2
+ ENTRY(\name\()_processor_functions)
+@@ -310,6 +317,9 @@ ENTRY(\name\()_processor_functions)
+ 	.endif
+ 
+ 	.size	\name\()_processor_functions, . - \name\()_processor_functions
++#if defined(CONFIG_BIG_LITTLE) && defined(CONFIG_HARDEN_BRANCH_PREDICTOR)
++	.previous
++#endif
+ .endm
+ 
+ .macro define_cache_functions name:req
+diff --git a/arch/arm/mm/proc-v7-bugs.c b/arch/arm/mm/proc-v7-bugs.c
+index 5544b82a2e7a..9a07916af8dd 100644
+--- a/arch/arm/mm/proc-v7-bugs.c
++++ b/arch/arm/mm/proc-v7-bugs.c
+@@ -52,8 +52,6 @@ static void cpu_v7_spectre_init(void)
+ 	case ARM_CPU_PART_CORTEX_A17:
+ 	case ARM_CPU_PART_CORTEX_A73:
+ 	case ARM_CPU_PART_CORTEX_A75:
+-		if (processor.switch_mm != cpu_v7_bpiall_switch_mm)
+-			goto bl_error;
+ 		per_cpu(harden_branch_predictor_fn, cpu) =
+ 			harden_branch_predictor_bpiall;
+ 		spectre_v2_method = "BPIALL";
+@@ -61,8 +59,6 @@ static void cpu_v7_spectre_init(void)
+ 
+ 	case ARM_CPU_PART_CORTEX_A15:
+ 	case ARM_CPU_PART_BRAHMA_B15:
+-		if (processor.switch_mm != cpu_v7_iciallu_switch_mm)
+-			goto bl_error;
+ 		per_cpu(harden_branch_predictor_fn, cpu) =
+ 			harden_branch_predictor_iciallu;
+ 		spectre_v2_method = "ICIALLU";
+@@ -88,11 +84,9 @@ static void cpu_v7_spectre_init(void)
+ 					  ARM_SMCCC_ARCH_WORKAROUND_1, &res);
+ 			if ((int)res.a0 != 0)
+ 				break;
+-			if (processor.switch_mm != cpu_v7_hvc_switch_mm && cpu)
+-				goto bl_error;
+ 			per_cpu(harden_branch_predictor_fn, cpu) =
+ 				call_hvc_arch_workaround_1;
+-			processor.switch_mm = cpu_v7_hvc_switch_mm;
++			cpu_do_switch_mm = cpu_v7_hvc_switch_mm;
+ 			spectre_v2_method = "hypervisor";
+ 			break;
+ 
+@@ -101,11 +95,9 @@ static void cpu_v7_spectre_init(void)
+ 					  ARM_SMCCC_ARCH_WORKAROUND_1, &res);
+ 			if ((int)res.a0 != 0)
+ 				break;
+-			if (processor.switch_mm != cpu_v7_smc_switch_mm && cpu)
+-				goto bl_error;
+ 			per_cpu(harden_branch_predictor_fn, cpu) =
+ 				call_smc_arch_workaround_1;
+-			processor.switch_mm = cpu_v7_smc_switch_mm;
++			cpu_do_switch_mm = cpu_v7_smc_switch_mm;
+ 			spectre_v2_method = "firmware";
+ 			break;
+ 
+@@ -119,11 +111,6 @@ static void cpu_v7_spectre_init(void)
+ 	if (spectre_v2_method)
+ 		pr_info("CPU%u: Spectre v2: using %s workaround\n",
+ 			smp_processor_id(), spectre_v2_method);
+-	return;
+-
+-bl_error:
+-	pr_err("CPU%u: Spectre v2: incorrect context switching function, system vulnerable\n",
+-		cpu);
+ }
+ #else
+ static void cpu_v7_spectre_init(void)
+diff --git a/arch/arm/vfp/vfpmodule.c b/arch/arm/vfp/vfpmodule.c
+index 8e5e97989fda..00dd8cf36632 100644
+--- a/arch/arm/vfp/vfpmodule.c
++++ b/arch/arm/vfp/vfpmodule.c
+@@ -554,12 +554,11 @@ void vfp_flush_hwstate(struct thread_info *thread)
+  * Save the current VFP state into the provided structures and prepare
+  * for entry into a new function (signal handler).
+  */
+-int vfp_preserve_user_clear_hwstate(struct user_vfp __user *ufp,
+-				    struct user_vfp_exc __user *ufp_exc)
++int vfp_preserve_user_clear_hwstate(struct user_vfp *ufp,
++				    struct user_vfp_exc *ufp_exc)
+ {
+ 	struct thread_info *thread = current_thread_info();
+ 	struct vfp_hard_struct *hwstate = &thread->vfpstate.hard;
+-	int err = 0;
+ 
+ 	/* Ensure that the saved hwstate is up-to-date. */
+ 	vfp_sync_hwstate(thread);
+@@ -568,22 +567,19 @@ int vfp_preserve_user_clear_hwstate(struct user_vfp __user *ufp,
+ 	 * Copy the floating point registers. There can be unused
+ 	 * registers see asm/hwcap.h for details.
+ 	 */
+-	err |= __copy_to_user(&ufp->fpregs, &hwstate->fpregs,
+-			      sizeof(hwstate->fpregs));
++	memcpy(&ufp->fpregs, &hwstate->fpregs, sizeof(hwstate->fpregs));
++
+ 	/*
+ 	 * Copy the status and control register.
+ 	 */
+-	__put_user_error(hwstate->fpscr, &ufp->fpscr, err);
++	ufp->fpscr = hwstate->fpscr;
+ 
+ 	/*
+ 	 * Copy the exception registers.
+ 	 */
+-	__put_user_error(hwstate->fpexc, &ufp_exc->fpexc, err);
+-	__put_user_error(hwstate->fpinst, &ufp_exc->fpinst, err);
+-	__put_user_error(hwstate->fpinst2, &ufp_exc->fpinst2, err);
+-
+-	if (err)
+-		return -EFAULT;
++	ufp_exc->fpexc = hwstate->fpexc;
++	ufp_exc->fpinst = hwstate->fpinst;
++	ufp_exc->fpinst2 = hwstate->fpinst2;
+ 
+ 	/* Ensure that VFP is disabled. */
+ 	vfp_flush_hwstate(thread);
+diff --git a/arch/x86/events/core.c b/arch/x86/events/core.c
+index cadf99923600..ab04751a12b6 100644
+--- a/arch/x86/events/core.c
++++ b/arch/x86/events/core.c
+@@ -2196,6 +2196,19 @@ void perf_check_microcode(void)
+ }
+ EXPORT_SYMBOL_GPL(perf_check_microcode);
+ 
++static int x86_pmu_check_period(struct perf_event *event, u64 value)
++{
++	if (x86_pmu.check_period && x86_pmu.check_period(event, value))
++		return -EINVAL;
++
++	if (value && x86_pmu.limit_period) {
++		if (x86_pmu.limit_period(event, value) > value)
++			return -EINVAL;
++	}
++
++	return 0;
++}
++
+ static struct pmu pmu = {
+ 	.pmu_enable		= x86_pmu_enable,
+ 	.pmu_disable		= x86_pmu_disable,
+@@ -2220,6 +2233,7 @@ static struct pmu pmu = {
+ 	.event_idx		= x86_pmu_event_idx,
+ 	.sched_task		= x86_pmu_sched_task,
+ 	.task_ctx_size          = sizeof(struct x86_perf_task_context),
++	.check_period		= x86_pmu_check_period,
+ };
+ 
+ void arch_perf_update_userpage(struct perf_event *event,
+diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c
+index f600ab601e00..f0639c8ebcb6 100644
+--- a/arch/x86/events/intel/core.c
++++ b/arch/x86/events/intel/core.c
+@@ -3262,6 +3262,11 @@ static void intel_pmu_sched_task(struct perf_event_context *ctx,
+ 		intel_pmu_lbr_sched_task(ctx, sched_in);
+ }
+ 
++static int intel_pmu_check_period(struct perf_event *event, u64 value)
++{
++	return intel_pmu_has_bts_period(event, value) ? -EINVAL : 0;
++}
++
+ PMU_FORMAT_ATTR(offcore_rsp, "config1:0-63");
+ 
+ PMU_FORMAT_ATTR(ldlat, "config1:0-15");
+@@ -3328,6 +3333,8 @@ static __initconst const struct x86_pmu core_pmu = {
+ 	.cpu_starting		= intel_pmu_cpu_starting,
+ 	.cpu_dying		= intel_pmu_cpu_dying,
+ 	.cpu_dead		= intel_pmu_cpu_dead,
++
++	.check_period		= intel_pmu_check_period,
+ };
+ 
+ static __initconst const struct x86_pmu intel_pmu = {
+@@ -3367,6 +3374,8 @@ static __initconst const struct x86_pmu intel_pmu = {
+ 
+ 	.guest_get_msrs		= intel_guest_get_msrs,
+ 	.sched_task		= intel_pmu_sched_task,
++
++	.check_period		= intel_pmu_check_period,
+ };
+ 
+ static __init void intel_clovertown_quirk(void)
+diff --git a/arch/x86/events/perf_event.h b/arch/x86/events/perf_event.h
+index 7ace39c51ff7..5c21680b0a69 100644
+--- a/arch/x86/events/perf_event.h
++++ b/arch/x86/events/perf_event.h
+@@ -626,6 +626,11 @@ struct x86_pmu {
+ 	 * Intel host/guest support (KVM)
+ 	 */
+ 	struct perf_guest_switch_msr *(*guest_get_msrs)(int *nr);
++
++	/*
++	 * Check period value for PERF_EVENT_IOC_PERIOD ioctl.
++	 */
++	int (*check_period) (struct perf_event *event, u64 period);
+ };
+ 
+ struct x86_perf_task_context {
+@@ -833,7 +838,7 @@ static inline int amd_pmu_init(void)
+ 
+ #ifdef CONFIG_CPU_SUP_INTEL
+ 
+-static inline bool intel_pmu_has_bts(struct perf_event *event)
++static inline bool intel_pmu_has_bts_period(struct perf_event *event, u64 period)
+ {
+ 	struct hw_perf_event *hwc = &event->hw;
+ 	unsigned int hw_event, bts_event;
+@@ -844,7 +849,14 @@ static inline bool intel_pmu_has_bts(struct perf_event *event)
+ 	hw_event = hwc->config & INTEL_ARCH_EVENT_MASK;
+ 	bts_event = x86_pmu.event_map(PERF_COUNT_HW_BRANCH_INSTRUCTIONS);
+ 
+-	return hw_event == bts_event && hwc->sample_period == 1;
++	return hw_event == bts_event && period == 1;
++}
++
++static inline bool intel_pmu_has_bts(struct perf_event *event)
++{
++	struct hw_perf_event *hwc = &event->hw;
++
++	return intel_pmu_has_bts_period(event, hwc->sample_period);
+ }
+ 
+ int intel_pmu_save_and_restart(struct perf_event *event);
+diff --git a/arch/x86/ia32/ia32_aout.c b/arch/x86/ia32/ia32_aout.c
+index cb26f18d43af..555c002167ad 100644
+--- a/arch/x86/ia32/ia32_aout.c
++++ b/arch/x86/ia32/ia32_aout.c
+@@ -50,7 +50,7 @@ static unsigned long get_dr(int n)
+ /*
+  * fill in the user structure for a core dump..
+  */
+-static void dump_thread32(struct pt_regs *regs, struct user32 *dump)
++static void fill_dump(struct pt_regs *regs, struct user32 *dump)
+ {
+ 	u32 fs, gs;
+ 	memset(dump, 0, sizeof(*dump));
+@@ -156,10 +156,12 @@ static int aout_core_dump(struct coredump_params *cprm)
+ 	fs = get_fs();
+ 	set_fs(KERNEL_DS);
+ 	has_dumped = 1;
++
++	fill_dump(cprm->regs, &dump);
++
+ 	strncpy(dump.u_comm, current->comm, sizeof(current->comm));
+ 	dump.u_ar0 = offsetof(struct user32, regs);
+ 	dump.signal = cprm->siginfo->si_signo;
+-	dump_thread32(cprm->regs, &dump);
+ 
+ 	/*
+ 	 * If the size of the dump file exceeds the rlimit, then see
+diff --git a/arch/x86/include/asm/uv/bios.h b/arch/x86/include/asm/uv/bios.h
+index e652a7cc6186..3f697a9e3f59 100644
+--- a/arch/x86/include/asm/uv/bios.h
++++ b/arch/x86/include/asm/uv/bios.h
+@@ -48,7 +48,8 @@ enum {
+ 	BIOS_STATUS_SUCCESS		=  0,
+ 	BIOS_STATUS_UNIMPLEMENTED	= -ENOSYS,
+ 	BIOS_STATUS_EINVAL		= -EINVAL,
+-	BIOS_STATUS_UNAVAIL		= -EBUSY
++	BIOS_STATUS_UNAVAIL		= -EBUSY,
++	BIOS_STATUS_ABORT		= -EINTR,
+ };
+ 
+ /* Address map parameters */
+@@ -167,4 +168,9 @@ extern long system_serial_number;
+ 
+ extern struct kobject *sgi_uv_kobj;	/* /sys/firmware/sgi_uv */
+ 
++/*
++ * EFI runtime lock; cf. firmware/efi/runtime-wrappers.c for details
++ */
++extern struct semaphore __efi_uv_runtime_lock;
++
+ #endif /* _ASM_X86_UV_BIOS_H */
+diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
+index 91db841101ca..1870fa7387b7 100644
+--- a/arch/x86/kvm/vmx.c
++++ b/arch/x86/kvm/vmx.c
+@@ -2178,7 +2178,8 @@ static void add_atomic_switch_msr(struct vcpu_vmx *vmx, unsigned msr,
+ 	if (!entry_only)
+ 		j = find_msr(&m->host, msr);
+ 
+-	if (i == NR_AUTOLOAD_MSRS || j == NR_AUTOLOAD_MSRS) {
++	if ((i < 0 && m->guest.nr == NR_AUTOLOAD_MSRS) ||
++		(j < 0 &&  m->host.nr == NR_AUTOLOAD_MSRS)) {
+ 		printk_once(KERN_WARNING "Not enough msr switch entries. "
+ 				"Can't add msr %x\n", msr);
+ 		return;
+diff --git a/arch/x86/platform/uv/bios_uv.c b/arch/x86/platform/uv/bios_uv.c
+index 4a6a5a26c582..eb33432f2f24 100644
+--- a/arch/x86/platform/uv/bios_uv.c
++++ b/arch/x86/platform/uv/bios_uv.c
+@@ -29,7 +29,8 @@
+ 
+ struct uv_systab *uv_systab;
+ 
+-s64 uv_bios_call(enum uv_bios_cmd which, u64 a1, u64 a2, u64 a3, u64 a4, u64 a5)
++static s64 __uv_bios_call(enum uv_bios_cmd which, u64 a1, u64 a2, u64 a3,
++			u64 a4, u64 a5)
+ {
+ 	struct uv_systab *tab = uv_systab;
+ 	s64 ret;
+@@ -51,6 +52,19 @@ s64 uv_bios_call(enum uv_bios_cmd which, u64 a1, u64 a2, u64 a3, u64 a4, u64 a5)
+ 
+ 	return ret;
+ }
++
++s64 uv_bios_call(enum uv_bios_cmd which, u64 a1, u64 a2, u64 a3, u64 a4, u64 a5)
++{
++	s64 ret;
++
++	if (down_interruptible(&__efi_uv_runtime_lock))
++		return BIOS_STATUS_ABORT;
++
++	ret = __uv_bios_call(which, a1, a2, a3, a4, a5);
++	up(&__efi_uv_runtime_lock);
++
++	return ret;
++}
+ EXPORT_SYMBOL_GPL(uv_bios_call);
+ 
+ s64 uv_bios_call_irqsave(enum uv_bios_cmd which, u64 a1, u64 a2, u64 a3,
+@@ -59,10 +73,15 @@ s64 uv_bios_call_irqsave(enum uv_bios_cmd which, u64 a1, u64 a2, u64 a3,
+ 	unsigned long bios_flags;
+ 	s64 ret;
+ 
++	if (down_interruptible(&__efi_uv_runtime_lock))
++		return BIOS_STATUS_ABORT;
++
+ 	local_irq_save(bios_flags);
+-	ret = uv_bios_call(which, a1, a2, a3, a4, a5);
++	ret = __uv_bios_call(which, a1, a2, a3, a4, a5);
+ 	local_irq_restore(bios_flags);
+ 
++	up(&__efi_uv_runtime_lock);
++
+ 	return ret;
+ }
+ 
+diff --git a/drivers/acpi/numa.c b/drivers/acpi/numa.c
+index 17b518cb787c..0ea065c6725a 100644
+--- a/drivers/acpi/numa.c
++++ b/drivers/acpi/numa.c
+@@ -147,9 +147,9 @@ acpi_table_print_srat_entry(struct acpi_subtable_header *header)
+ 		{
+ 			struct acpi_srat_mem_affinity *p =
+ 			    (struct acpi_srat_mem_affinity *)header;
+-			pr_debug("SRAT Memory (0x%lx length 0x%lx) in proximity domain %d %s%s%s\n",
+-				 (unsigned long)p->base_address,
+-				 (unsigned long)p->length,
++			pr_debug("SRAT Memory (0x%llx length 0x%llx) in proximity domain %d %s%s%s\n",
++				 (unsigned long long)p->base_address,
++				 (unsigned long long)p->length,
+ 				 p->proximity_domain,
+ 				 (p->flags & ACPI_SRAT_MEM_ENABLED) ?
+ 				 "enabled" : "disabled",
+diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
+index d6d91e8afa9e..61fe4bbc6dc0 100644
+--- a/drivers/cpufreq/cpufreq.c
++++ b/drivers/cpufreq/cpufreq.c
+@@ -1496,17 +1496,16 @@ static unsigned int __cpufreq_get(struct cpufreq_policy *policy)
+ {
+ 	unsigned int ret_freq = 0;
+ 
+-	if (!cpufreq_driver->get)
++	if (unlikely(policy_is_inactive(policy)) || !cpufreq_driver->get)
+ 		return ret_freq;
+ 
+ 	ret_freq = cpufreq_driver->get(policy->cpu);
+ 
+ 	/*
+-	 * Updating inactive policies is invalid, so avoid doing that.  Also
+-	 * if fast frequency switching is used with the given policy, the check
++	 * If fast frequency switching is used with the given policy, the check
+ 	 * against policy->cur is pointless, so skip it in that case too.
+ 	 */
+-	if (unlikely(policy_is_inactive(policy)) || policy->fast_switch_enabled)
++	if (policy->fast_switch_enabled)
+ 		return ret_freq;
+ 
+ 	if (ret_freq && policy->cur &&
+diff --git a/drivers/firmware/efi/runtime-wrappers.c b/drivers/firmware/efi/runtime-wrappers.c
+index ae54870b2788..dd7f63354ca0 100644
+--- a/drivers/firmware/efi/runtime-wrappers.c
++++ b/drivers/firmware/efi/runtime-wrappers.c
+@@ -49,6 +49,13 @@ void efi_call_virt_check_flags(unsigned long flags, const char *call)
+ 	local_irq_restore(flags);
+ }
+ 
++/*
++ * Expose the EFI runtime lock to the UV platform
++ */
++#ifdef CONFIG_X86_UV
++extern struct semaphore __efi_uv_runtime_lock __alias(efi_runtime_lock);
++#endif
++
+ /*
+  * According to section 7.1 of the UEFI spec, Runtime Services are not fully
+  * reentrant, and there are particular combinations of calls that need to be
+diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c
+index f64f35cdc2ff..fa3f2f039a74 100644
+--- a/drivers/gpu/drm/bridge/tc358767.c
++++ b/drivers/gpu/drm/bridge/tc358767.c
+@@ -96,6 +96,8 @@
+ #define DP0_STARTVAL		0x064c
+ #define DP0_ACTIVEVAL		0x0650
+ #define DP0_SYNCVAL		0x0654
++#define SYNCVAL_HS_POL_ACTIVE_LOW	(1 << 15)
++#define SYNCVAL_VS_POL_ACTIVE_LOW	(1 << 31)
+ #define DP0_MISC		0x0658
+ #define TU_SIZE_RECOMMENDED		(63) /* LSCLK cycles per TU */
+ #define BPC_6				(0 << 5)
+@@ -140,6 +142,8 @@
+ #define DP0_LTLOOPCTRL		0x06d8
+ #define DP0_SNKLTCTRL		0x06e4
+ 
++#define DP1_SRCCTRL		0x07a0
++
+ /* PHY */
+ #define DP_PHY_CTRL		0x0800
+ #define DP_PHY_RST			BIT(28)  /* DP PHY Global Soft Reset */
+@@ -148,6 +152,7 @@
+ #define PHY_M1_RST			BIT(12)  /* Reset PHY1 Main Channel */
+ #define PHY_RDY				BIT(16)  /* PHY Main Channels Ready */
+ #define PHY_M0_RST			BIT(8)   /* Reset PHY0 Main Channel */
++#define PHY_2LANE			BIT(2)   /* PHY Enable 2 lanes */
+ #define PHY_A0_EN			BIT(1)   /* PHY Aux Channel0 Enable */
+ #define PHY_M0_EN			BIT(0)   /* PHY Main Channel0 Enable */
+ 
+@@ -538,6 +543,7 @@ static int tc_aux_link_setup(struct tc_data *tc)
+ 	unsigned long rate;
+ 	u32 value;
+ 	int ret;
++	u32 dp_phy_ctrl;
+ 
+ 	rate = clk_get_rate(tc->refclk);
+ 	switch (rate) {
+@@ -562,7 +568,10 @@ static int tc_aux_link_setup(struct tc_data *tc)
+ 	value |= SYSCLK_SEL_LSCLK | LSCLK_DIV_2;
+ 	tc_write(SYS_PLLPARAM, value);
+ 
+-	tc_write(DP_PHY_CTRL, BGREN | PWR_SW_EN | BIT(2) | PHY_A0_EN);
++	dp_phy_ctrl = BGREN | PWR_SW_EN | PHY_A0_EN;
++	if (tc->link.base.num_lanes == 2)
++		dp_phy_ctrl |= PHY_2LANE;
++	tc_write(DP_PHY_CTRL, dp_phy_ctrl);
+ 
+ 	/*
+ 	 * Initially PLLs are in bypass. Force PLL parameter update,
+@@ -717,7 +726,9 @@ static int tc_set_video_mode(struct tc_data *tc, struct drm_display_mode *mode)
+ 
+ 	tc_write(DP0_ACTIVEVAL, (mode->vdisplay << 16) | (mode->hdisplay));
+ 
+-	tc_write(DP0_SYNCVAL, (vsync_len << 16) | (hsync_len << 0));
++	tc_write(DP0_SYNCVAL, (vsync_len << 16) | (hsync_len << 0) |
++		 ((mode->flags & DRM_MODE_FLAG_NHSYNC) ? SYNCVAL_HS_POL_ACTIVE_LOW : 0) |
++		 ((mode->flags & DRM_MODE_FLAG_NVSYNC) ? SYNCVAL_VS_POL_ACTIVE_LOW : 0));
+ 
+ 	tc_write(DPIPXLFMT, VS_POL_ACTIVE_LOW | HS_POL_ACTIVE_LOW |
+ 		 DE_POL_ACTIVE_HIGH | SUB_CFG_TYPE_CONFIG1 | DPI_BPP_RGB888);
+@@ -827,12 +838,11 @@ static int tc_main_link_setup(struct tc_data *tc)
+ 	if (!tc->mode)
+ 		return -EINVAL;
+ 
+-	/* from excel file - DP0_SrcCtrl */
+-	tc_write(DP0_SRCCTRL, DP0_SRCCTRL_SCRMBLDIS | DP0_SRCCTRL_EN810B |
+-		 DP0_SRCCTRL_LANESKEW | DP0_SRCCTRL_LANES_2 |
+-		 DP0_SRCCTRL_BW27 | DP0_SRCCTRL_AUTOCORRECT);
+-	/* from excel file - DP1_SrcCtrl */
+-	tc_write(0x07a0, 0x00003083);
++	tc_write(DP0_SRCCTRL, tc_srcctrl(tc));
++	/* SSCG and BW27 on DP1 must be set to the same as on DP0 */
++	tc_write(DP1_SRCCTRL,
++		 (tc->link.spread ? DP0_SRCCTRL_SSCG : 0) |
++		 ((tc->link.base.rate != 162000) ? DP0_SRCCTRL_BW27 : 0));
+ 
+ 	rate = clk_get_rate(tc->refclk);
+ 	switch (rate) {
+@@ -853,8 +863,11 @@ static int tc_main_link_setup(struct tc_data *tc)
+ 	}
+ 	value |= SYSCLK_SEL_LSCLK | LSCLK_DIV_2;
+ 	tc_write(SYS_PLLPARAM, value);
++
+ 	/* Setup Main Link */
+-	dp_phy_ctrl = BGREN | PWR_SW_EN | BIT(2) | PHY_A0_EN |  PHY_M0_EN;
++	dp_phy_ctrl = BGREN | PWR_SW_EN | PHY_A0_EN | PHY_M0_EN;
++	if (tc->link.base.num_lanes == 2)
++		dp_phy_ctrl |= PHY_2LANE;
+ 	tc_write(DP_PHY_CTRL, dp_phy_ctrl);
+ 	msleep(100);
+ 
+@@ -1109,10 +1122,20 @@ static bool tc_bridge_mode_fixup(struct drm_bridge *bridge,
+ static int tc_connector_mode_valid(struct drm_connector *connector,
+ 				   struct drm_display_mode *mode)
+ {
++	struct tc_data *tc = connector_to_tc(connector);
++	u32 req, avail;
++	u32 bits_per_pixel = 24;
++
+ 	/* DPI interface clock limitation: upto 154 MHz */
+ 	if (mode->clock > 154000)
+ 		return MODE_CLOCK_HIGH;
+ 
++	req = mode->clock * bits_per_pixel / 8;
++	avail = tc->link.base.num_lanes * tc->link.base.rate;
++
++	if (req > avail)
++		return MODE_BAD;
++
+ 	return MODE_OK;
+ }
+ 
+diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
+index 7b2030925825..6509031098d5 100644
+--- a/drivers/gpu/drm/i915/i915_gem.c
++++ b/drivers/gpu/drm/i915/i915_gem.c
+@@ -1593,6 +1593,16 @@ i915_gem_sw_finish_ioctl(struct drm_device *dev, void *data,
+ 	return err;
+ }
+ 
++static inline bool
++__vma_matches(struct vm_area_struct *vma, struct file *filp,
++	      unsigned long addr, unsigned long size)
++{
++	if (vma->vm_file != filp)
++		return false;
++
++	return vma->vm_start == addr && (vma->vm_end - vma->vm_start) == size;
++}
++
+ /**
+  * i915_gem_mmap_ioctl - Maps the contents of an object, returning the address
+  *			 it is mapped to.
+@@ -1651,7 +1661,7 @@ i915_gem_mmap_ioctl(struct drm_device *dev, void *data,
+ 			return -EINTR;
+ 		}
+ 		vma = find_vma(mm, addr);
+-		if (vma)
++		if (vma && __vma_matches(vma, obj->base.filp, addr, args->size))
+ 			vma->vm_page_prot =
+ 				pgprot_writecombine(vm_get_page_prot(vma->vm_flags));
+ 		else
+diff --git a/drivers/input/misc/bma150.c b/drivers/input/misc/bma150.c
+index b0d445390ee4..d43bc7bd3387 100644
+--- a/drivers/input/misc/bma150.c
++++ b/drivers/input/misc/bma150.c
+@@ -482,13 +482,14 @@ static int bma150_register_input_device(struct bma150_data *bma150)
+ 	idev->close = bma150_irq_close;
+ 	input_set_drvdata(idev, bma150);
+ 
++	bma150->input = idev;
++
+ 	error = input_register_device(idev);
+ 	if (error) {
+ 		input_free_device(idev);
+ 		return error;
+ 	}
+ 
+-	bma150->input = idev;
+ 	return 0;
+ }
+ 
+@@ -511,15 +512,15 @@ static int bma150_register_polled_device(struct bma150_data *bma150)
+ 
+ 	bma150_init_input_device(bma150, ipoll_dev->input);
+ 
++	bma150->input_polled = ipoll_dev;
++	bma150->input = ipoll_dev->input;
++
+ 	error = input_register_polled_device(ipoll_dev);
+ 	if (error) {
+ 		input_free_polled_device(ipoll_dev);
+ 		return error;
+ 	}
+ 
+-	bma150->input_polled = ipoll_dev;
+-	bma150->input = ipoll_dev->input;
+-
+ 	return 0;
+ }
+ 
+diff --git a/drivers/input/mouse/elan_i2c_core.c b/drivers/input/mouse/elan_i2c_core.c
+index 30adc5745cba..25ce9047b682 100644
+--- a/drivers/input/mouse/elan_i2c_core.c
++++ b/drivers/input/mouse/elan_i2c_core.c
+@@ -1240,7 +1240,6 @@ MODULE_DEVICE_TABLE(i2c, elan_id);
+ static const struct acpi_device_id elan_acpi_id[] = {
+ 	{ "ELAN0000", 0 },
+ 	{ "ELAN0100", 0 },
+-	{ "ELAN0501", 0 },
+ 	{ "ELAN0600", 0 },
+ 	{ "ELAN0602", 0 },
+ 	{ "ELAN0605", 0 },
+@@ -1251,6 +1250,7 @@ static const struct acpi_device_id elan_acpi_id[] = {
+ 	{ "ELAN060C", 0 },
+ 	{ "ELAN0611", 0 },
+ 	{ "ELAN0612", 0 },
++	{ "ELAN0617", 0 },
+ 	{ "ELAN0618", 0 },
+ 	{ "ELAN061C", 0 },
+ 	{ "ELAN061D", 0 },
+diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c
+index c120afd9c46a..38edf8f5bf8a 100644
+--- a/drivers/input/mouse/elantech.c
++++ b/drivers/input/mouse/elantech.c
+@@ -1117,6 +1117,8 @@ static int elantech_get_resolution_v4(struct psmouse *psmouse,
+  * Asus UX31               0x361f00        20, 15, 0e      clickpad
+  * Asus UX32VD             0x361f02        00, 15, 0e      clickpad
+  * Avatar AVIU-145A2       0x361f00        ?               clickpad
++ * Fujitsu CELSIUS H760    0x570f02        40, 14, 0c      3 hw buttons (**)
++ * Fujitsu CELSIUS H780    0x5d0f02        41, 16, 0d      3 hw buttons (**)
+  * Fujitsu LIFEBOOK E544   0x470f00        d0, 12, 09      2 hw buttons
+  * Fujitsu LIFEBOOK E546   0x470f00        50, 12, 09      2 hw buttons
+  * Fujitsu LIFEBOOK E547   0x470f00        50, 12, 09      2 hw buttons
+@@ -1169,6 +1171,13 @@ static const struct dmi_system_id elantech_dmi_has_middle_button[] = {
+ 			DMI_MATCH(DMI_PRODUCT_NAME, "CELSIUS H760"),
+ 		},
+ 	},
++	{
++		/* Fujitsu H780 also has a middle button */
++		.matches = {
++			DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
++			DMI_MATCH(DMI_PRODUCT_NAME, "CELSIUS H780"),
++		},
++	},
+ #endif
+ 	{ }
+ };
+diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
+index 914c8a6bf93c..345f4d81ba07 100644
+--- a/drivers/md/dm-thin.c
++++ b/drivers/md/dm-thin.c
+@@ -257,6 +257,7 @@ struct pool {
+ 
+ 	spinlock_t lock;
+ 	struct bio_list deferred_flush_bios;
++	struct bio_list deferred_flush_completions;
+ 	struct list_head prepared_mappings;
+ 	struct list_head prepared_discards;
+ 	struct list_head prepared_discards_pt2;
+@@ -925,6 +926,39 @@ static void process_prepared_mapping_fail(struct dm_thin_new_mapping *m)
+ 	mempool_free(m, m->tc->pool->mapping_pool);
+ }
+ 
++static void complete_overwrite_bio(struct thin_c *tc, struct bio *bio)
++{
++	struct pool *pool = tc->pool;
++	unsigned long flags;
++
++	/*
++	 * If the bio has the REQ_FUA flag set we must commit the metadata
++	 * before signaling its completion.
++	 */
++	if (!bio_triggers_commit(tc, bio)) {
++		bio_endio(bio);
++		return;
++	}
++
++	/*
++	 * Complete bio with an error if earlier I/O caused changes to the
++	 * metadata that can't be committed, e.g, due to I/O errors on the
++	 * metadata device.
++	 */
++	if (dm_thin_aborted_changes(tc->td)) {
++		bio_io_error(bio);
++		return;
++	}
++
++	/*
++	 * Batch together any bios that trigger commits and then issue a
++	 * single commit for them in process_deferred_bios().
++	 */
++	spin_lock_irqsave(&pool->lock, flags);
++	bio_list_add(&pool->deferred_flush_completions, bio);
++	spin_unlock_irqrestore(&pool->lock, flags);
++}
++
+ static void process_prepared_mapping(struct dm_thin_new_mapping *m)
+ {
+ 	struct thin_c *tc = m->tc;
+@@ -957,7 +991,7 @@ static void process_prepared_mapping(struct dm_thin_new_mapping *m)
+ 	 */
+ 	if (bio) {
+ 		inc_remap_and_issue_cell(tc, m->cell, m->data_block);
+-		bio_endio(bio);
++		complete_overwrite_bio(tc, bio);
+ 	} else {
+ 		inc_all_io_entry(tc->pool, m->cell->holder);
+ 		remap_and_issue(tc, m->cell->holder, m->data_block);
+@@ -2303,7 +2337,7 @@ static void process_deferred_bios(struct pool *pool)
+ {
+ 	unsigned long flags;
+ 	struct bio *bio;
+-	struct bio_list bios;
++	struct bio_list bios, bio_completions;
+ 	struct thin_c *tc;
+ 
+ 	tc = get_first_thin(pool);
+@@ -2314,26 +2348,36 @@ static void process_deferred_bios(struct pool *pool)
+ 	}
+ 
+ 	/*
+-	 * If there are any deferred flush bios, we must commit
+-	 * the metadata before issuing them.
++	 * If there are any deferred flush bios, we must commit the metadata
++	 * before issuing them or signaling their completion.
+ 	 */
+ 	bio_list_init(&bios);
++	bio_list_init(&bio_completions);
++
+ 	spin_lock_irqsave(&pool->lock, flags);
+ 	bio_list_merge(&bios, &pool->deferred_flush_bios);
+ 	bio_list_init(&pool->deferred_flush_bios);
++
++	bio_list_merge(&bio_completions, &pool->deferred_flush_completions);
++	bio_list_init(&pool->deferred_flush_completions);
+ 	spin_unlock_irqrestore(&pool->lock, flags);
+ 
+-	if (bio_list_empty(&bios) &&
++	if (bio_list_empty(&bios) && bio_list_empty(&bio_completions) &&
+ 	    !(dm_pool_changed_this_transaction(pool->pmd) && need_commit_due_to_time(pool)))
+ 		return;
+ 
+ 	if (commit(pool)) {
++		bio_list_merge(&bios, &bio_completions);
++
+ 		while ((bio = bio_list_pop(&bios)))
+ 			bio_io_error(bio);
+ 		return;
+ 	}
+ 	pool->last_commit_jiffies = jiffies;
+ 
++	while ((bio = bio_list_pop(&bio_completions)))
++		bio_endio(bio);
++
+ 	while ((bio = bio_list_pop(&bios)))
+ 		generic_make_request(bio);
+ }
+@@ -2968,6 +3012,7 @@ static struct pool *pool_create(struct mapped_device *pool_md,
+ 	INIT_DELAYED_WORK(&pool->no_space_timeout, do_no_space_timeout);
+ 	spin_lock_init(&pool->lock);
+ 	bio_list_init(&pool->deferred_flush_bios);
++	bio_list_init(&pool->deferred_flush_completions);
+ 	INIT_LIST_HEAD(&pool->prepared_mappings);
+ 	INIT_LIST_HEAD(&pool->prepared_discards);
+ 	INIT_LIST_HEAD(&pool->prepared_discards_pt2);
+diff --git a/drivers/misc/eeprom/Kconfig b/drivers/misc/eeprom/Kconfig
+index c4e41c26649e..fac10c0e852c 100644
+--- a/drivers/misc/eeprom/Kconfig
++++ b/drivers/misc/eeprom/Kconfig
+@@ -12,7 +12,7 @@ config EEPROM_AT24
+ 	  ones like at24c64, 24lc02 or fm24c04:
+ 
+ 	     24c00, 24c01, 24c02, spd (readonly 24c02), 24c04, 24c08,
+-	     24c16, 24c32, 24c64, 24c128, 24c256, 24c512, 24c1024
++	     24c16, 24c32, 24c64, 24c128, 24c256, 24c512, 24c1024, 24c2048
+ 
+ 	  Unless you like data loss puzzles, always be sure that any chip
+ 	  you configure as a 24c32 (32 kbit) or larger is NOT really a
+diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c
+index d8a485f1798b..a37b9b6a315a 100644
+--- a/drivers/misc/eeprom/at24.c
++++ b/drivers/misc/eeprom/at24.c
+@@ -170,6 +170,7 @@ static const struct i2c_device_id at24_ids[] = {
+ 	{ "24c256",	AT24_DEVICE_MAGIC(262144 / 8,	AT24_FLAG_ADDR16) },
+ 	{ "24c512",	AT24_DEVICE_MAGIC(524288 / 8,	AT24_FLAG_ADDR16) },
+ 	{ "24c1024",	AT24_DEVICE_MAGIC(1048576 / 8,	AT24_FLAG_ADDR16) },
++	{ "24c2048",	AT24_DEVICE_MAGIC(2097152 / 8,	AT24_FLAG_ADDR16) },
+ 	{ "at24", 0 },
+ 	{ /* END OF LIST */ }
+ };
+diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
+index 4bc2c806eb61..eeeb4c5740bf 100644
+--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
++++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
+@@ -12979,6 +12979,24 @@ static netdev_features_t bnx2x_features_check(struct sk_buff *skb,
+ 					      struct net_device *dev,
+ 					      netdev_features_t features)
+ {
++	/*
++	 * A skb with gso_size + header length > 9700 will cause a
++	 * firmware panic. Drop GSO support.
++	 *
++	 * Eventually the upper layer should not pass these packets down.
++	 *
++	 * For speed, if the gso_size is <= 9000, assume there will
++	 * not be 700 bytes of headers and pass it through. Only do a
++	 * full (slow) validation if the gso_size is > 9000.
++	 *
++	 * (Due to the way SKB_BY_FRAGS works this will also do a full
++	 * validation in that case.)
++	 */
++	if (unlikely(skb_is_gso(skb) &&
++		     (skb_shinfo(skb)->gso_size > 9000) &&
++		     !skb_gso_validate_mac_len(skb, 9700)))
++		features &= ~NETIF_F_GSO_MASK;
++
+ 	features = vlan_features_check(skb, features);
+ 	return vxlan_features_check(skb, features);
+ }
+diff --git a/drivers/net/usb/ch9200.c b/drivers/net/usb/ch9200.c
+index 8a40202c0a17..c4f1c363e24b 100644
+--- a/drivers/net/usb/ch9200.c
++++ b/drivers/net/usb/ch9200.c
+@@ -254,14 +254,9 @@ static struct sk_buff *ch9200_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
+ 	tx_overhead = 0x40;
+ 
+ 	len = skb->len;
+-	if (skb_headroom(skb) < tx_overhead) {
+-		struct sk_buff *skb2;
+-
+-		skb2 = skb_copy_expand(skb, tx_overhead, 0, flags);
++	if (skb_cow_head(skb, tx_overhead)) {
+ 		dev_kfree_skb_any(skb);
+-		skb = skb2;
+-		if (!skb)
+-			return NULL;
++		return NULL;
+ 	}
+ 
+ 	__skb_push(skb, tx_overhead);
+diff --git a/drivers/net/usb/kaweth.c b/drivers/net/usb/kaweth.c
+index 66b34ddbe216..72d9e7954b0a 100644
+--- a/drivers/net/usb/kaweth.c
++++ b/drivers/net/usb/kaweth.c
+@@ -803,18 +803,12 @@ static netdev_tx_t kaweth_start_xmit(struct sk_buff *skb,
+ 	}
+ 
+ 	/* We now decide whether we can put our special header into the sk_buff */
+-	if (skb_cloned(skb) || skb_headroom(skb) < 2) {
+-		/* no such luck - we make our own */
+-		struct sk_buff *copied_skb;
+-		copied_skb = skb_copy_expand(skb, 2, 0, GFP_ATOMIC);
+-		dev_kfree_skb_irq(skb);
+-		skb = copied_skb;
+-		if (!copied_skb) {
+-			kaweth->stats.tx_errors++;
+-			netif_start_queue(net);
+-			spin_unlock_irq(&kaweth->device_lock);
+-			return NETDEV_TX_OK;
+-		}
++	if (skb_cow_head(skb, 2)) {
++		kaweth->stats.tx_errors++;
++		netif_start_queue(net);
++		spin_unlock_irq(&kaweth->device_lock);
++		dev_kfree_skb_any(skb);
++		return NETDEV_TX_OK;
+ 	}
+ 
+ 	private_header = (__le16 *)__skb_push(skb, 2);
+diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c
+index e29f4c0767eb..e719ecd69d01 100644
+--- a/drivers/net/usb/smsc95xx.c
++++ b/drivers/net/usb/smsc95xx.c
+@@ -2011,13 +2011,13 @@ static struct sk_buff *smsc95xx_tx_fixup(struct usbnet *dev,
+ 	/* We do not advertise SG, so skbs should be already linearized */
+ 	BUG_ON(skb_shinfo(skb)->nr_frags);
+ 
+-	if (skb_headroom(skb) < overhead) {
+-		struct sk_buff *skb2 = skb_copy_expand(skb,
+-			overhead, 0, flags);
++	/* Make writable and expand header space by overhead if required */
++	if (skb_cow_head(skb, overhead)) {
++		/* Must deallocate here as returning NULL to indicate error
++		 * means the skb won't be deallocated in the caller.
++		 */
+ 		dev_kfree_skb_any(skb);
+-		skb = skb2;
+-		if (!skb)
+-			return NULL;
++		return NULL;
+ 	}
+ 
+ 	if (csum) {
+diff --git a/drivers/pinctrl/qcom/pinctrl-msm.c b/drivers/pinctrl/qcom/pinctrl-msm.c
+index bedce3453dd3..5aa221487a9c 100644
+--- a/drivers/pinctrl/qcom/pinctrl-msm.c
++++ b/drivers/pinctrl/qcom/pinctrl-msm.c
+@@ -803,11 +803,24 @@ static int msm_gpio_init(struct msm_pinctrl *pctrl)
+ 		return ret;
+ 	}
+ 
+-	ret = gpiochip_add_pin_range(&pctrl->chip, dev_name(pctrl->dev), 0, 0, chip->ngpio);
+-	if (ret) {
+-		dev_err(pctrl->dev, "Failed to add pin range\n");
+-		gpiochip_remove(&pctrl->chip);
+-		return ret;
++	/*
++	 * For DeviceTree-supported systems, the gpio core checks the
++	 * pinctrl's device node for the "gpio-ranges" property.
++	 * If it is present, it takes care of adding the pin ranges
++	 * for the driver. In this case the driver can skip ahead.
++	 *
++	 * In order to remain compatible with older, existing DeviceTree
++	 * files which don't set the "gpio-ranges" property or systems that
++	 * utilize ACPI the driver has to call gpiochip_add_pin_range().
++	 */
++	if (!of_property_read_bool(pctrl->dev->of_node, "gpio-ranges")) {
++		ret = gpiochip_add_pin_range(&pctrl->chip,
++			dev_name(pctrl->dev), 0, 0, chip->ngpio);
++		if (ret) {
++			dev_err(pctrl->dev, "Failed to add pin range\n");
++			gpiochip_remove(&pctrl->chip);
++			return ret;
++		}
+ 	}
+ 
+ 	ret = gpiochip_irqchip_add(chip,
+diff --git a/drivers/scsi/aic94xx/aic94xx_init.c b/drivers/scsi/aic94xx/aic94xx_init.c
+index 85442edf3c49..913ebb6d0d29 100644
+--- a/drivers/scsi/aic94xx/aic94xx_init.c
++++ b/drivers/scsi/aic94xx/aic94xx_init.c
+@@ -281,7 +281,7 @@ static ssize_t asd_show_dev_rev(struct device *dev,
+ 	return snprintf(buf, PAGE_SIZE, "%s\n",
+ 			asd_dev_rev[asd_ha->revision_id]);
+ }
+-static DEVICE_ATTR(aic_revision, S_IRUGO, asd_show_dev_rev, NULL);
++static DEVICE_ATTR(revision, S_IRUGO, asd_show_dev_rev, NULL);
+ 
+ static ssize_t asd_show_dev_bios_build(struct device *dev,
+ 				       struct device_attribute *attr,char *buf)
+@@ -478,7 +478,7 @@ static int asd_create_dev_attrs(struct asd_ha_struct *asd_ha)
+ {
+ 	int err;
+ 
+-	err = device_create_file(&asd_ha->pcidev->dev, &dev_attr_aic_revision);
++	err = device_create_file(&asd_ha->pcidev->dev, &dev_attr_revision);
+ 	if (err)
+ 		return err;
+ 
+@@ -500,13 +500,13 @@ err_update_bios:
+ err_biosb:
+ 	device_remove_file(&asd_ha->pcidev->dev, &dev_attr_bios_build);
+ err_rev:
+-	device_remove_file(&asd_ha->pcidev->dev, &dev_attr_aic_revision);
++	device_remove_file(&asd_ha->pcidev->dev, &dev_attr_revision);
+ 	return err;
+ }
+ 
+ static void asd_remove_dev_attrs(struct asd_ha_struct *asd_ha)
+ {
+-	device_remove_file(&asd_ha->pcidev->dev, &dev_attr_aic_revision);
++	device_remove_file(&asd_ha->pcidev->dev, &dev_attr_revision);
+ 	device_remove_file(&asd_ha->pcidev->dev, &dev_attr_bios_build);
+ 	device_remove_file(&asd_ha->pcidev->dev, &dev_attr_pcba_sn);
+ 	device_remove_file(&asd_ha->pcidev->dev, &dev_attr_update_bios);
+diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c
+index 984d6aae7529..0e5435330c07 100644
+--- a/drivers/usb/dwc2/hcd.c
++++ b/drivers/usb/dwc2/hcd.c
+@@ -5202,7 +5202,6 @@ error3:
+ error2:
+ 	usb_put_hcd(hcd);
+ error1:
+-	kfree(hsotg->core_params);
+ 
+ #ifdef CONFIG_USB_DWC2_TRACK_MISSED_SOFS
+ 	kfree(hsotg->last_frame_num_array);
+diff --git a/fs/cifs/file.c b/fs/cifs/file.c
+index a3046b6523c8..8ec296308729 100644
+--- a/fs/cifs/file.c
++++ b/fs/cifs/file.c
+@@ -1126,6 +1126,10 @@ cifs_push_mandatory_locks(struct cifsFileInfo *cfile)
+ 		return -EINVAL;
+ 	}
+ 
++	BUILD_BUG_ON(sizeof(struct smb_hdr) + sizeof(LOCKING_ANDX_RANGE) >
++		     PAGE_SIZE);
++	max_buf = min_t(unsigned int, max_buf - sizeof(struct smb_hdr),
++			PAGE_SIZE);
+ 	max_num = (max_buf - sizeof(struct smb_hdr)) /
+ 						sizeof(LOCKING_ANDX_RANGE);
+ 	buf = kcalloc(max_num, sizeof(LOCKING_ANDX_RANGE), GFP_KERNEL);
+@@ -1462,6 +1466,10 @@ cifs_unlock_range(struct cifsFileInfo *cfile, struct file_lock *flock,
+ 	if (max_buf < (sizeof(struct smb_hdr) + sizeof(LOCKING_ANDX_RANGE)))
+ 		return -EINVAL;
+ 
++	BUILD_BUG_ON(sizeof(struct smb_hdr) + sizeof(LOCKING_ANDX_RANGE) >
++		     PAGE_SIZE);
++	max_buf = min_t(unsigned int, max_buf - sizeof(struct smb_hdr),
++			PAGE_SIZE);
+ 	max_num = (max_buf - sizeof(struct smb_hdr)) /
+ 						sizeof(LOCKING_ANDX_RANGE);
+ 	buf = kcalloc(max_num, sizeof(LOCKING_ANDX_RANGE), GFP_KERNEL);
+diff --git a/fs/cifs/smb2file.c b/fs/cifs/smb2file.c
+index b7885dc0d9bb..dee5250701de 100644
+--- a/fs/cifs/smb2file.c
++++ b/fs/cifs/smb2file.c
+@@ -129,6 +129,8 @@ smb2_unlock_range(struct cifsFileInfo *cfile, struct file_lock *flock,
+ 	if (max_buf < sizeof(struct smb2_lock_element))
+ 		return -EINVAL;
+ 
++	BUILD_BUG_ON(sizeof(struct smb2_lock_element) > PAGE_SIZE);
++	max_buf = min_t(unsigned int, max_buf, PAGE_SIZE);
+ 	max_num = max_buf / sizeof(struct smb2_lock_element);
+ 	buf = kcalloc(max_num, sizeof(struct smb2_lock_element), GFP_KERNEL);
+ 	if (!buf)
+@@ -265,6 +267,8 @@ smb2_push_mandatory_locks(struct cifsFileInfo *cfile)
+ 		return -EINVAL;
+ 	}
+ 
++	BUILD_BUG_ON(sizeof(struct smb2_lock_element) > PAGE_SIZE);
++	max_buf = min_t(unsigned int, max_buf, PAGE_SIZE);
+ 	max_num = max_buf / sizeof(struct smb2_lock_element);
+ 	buf = kcalloc(max_num, sizeof(struct smb2_lock_element), GFP_KERNEL);
+ 	if (!buf) {
+diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
+index 78ed8105e64d..ae8ecf821019 100644
+--- a/include/linux/perf_event.h
++++ b/include/linux/perf_event.h
+@@ -455,6 +455,11 @@ struct pmu {
+ 	 * Filter events for PMU-specific reasons.
+ 	 */
+ 	int (*filter_match)		(struct perf_event *event); /* optional */
++
++	/*
++	 * Check period value for PERF_EVENT_IOC_PERIOD ioctl.
++	 */
++	int (*check_period)		(struct perf_event *event, u64 value); /* optional */
+ };
+ 
+ /**
+diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
+index ed329a39d621..f8761774a94f 100644
+--- a/include/linux/skbuff.h
++++ b/include/linux/skbuff.h
+@@ -3102,6 +3102,7 @@ int skb_shift(struct sk_buff *tgt, struct sk_buff *skb, int shiftlen);
+ void skb_scrub_packet(struct sk_buff *skb, bool xnet);
+ unsigned int skb_gso_transport_seglen(const struct sk_buff *skb);
+ bool skb_gso_validate_mtu(const struct sk_buff *skb, unsigned int mtu);
++bool skb_gso_validate_mac_len(const struct sk_buff *skb, unsigned int len);
+ struct sk_buff *skb_segment(struct sk_buff *skb, netdev_features_t features);
+ struct sk_buff *skb_vlan_untag(struct sk_buff *skb);
+ int skb_ensure_writable(struct sk_buff *skb, int write_len);
+@@ -3880,6 +3881,21 @@ static inline unsigned int skb_gso_network_seglen(const struct sk_buff *skb)
+ 	return hdr_len + skb_gso_transport_seglen(skb);
+ }
+ 
++/**
++ * skb_gso_mac_seglen - Return length of individual segments of a gso packet
++ *
++ * @skb: GSO skb
++ *
++ * skb_gso_mac_seglen is used to determine the real size of the
++ * individual segments, including MAC/L2, Layer3 (IP, IPv6) and L4
++ * headers (TCP/UDP).
++ */
++static inline unsigned int skb_gso_mac_seglen(const struct sk_buff *skb)
++{
++	unsigned int hdr_len = skb_transport_header(skb) - skb_mac_header(skb);
++	return hdr_len + skb_gso_transport_seglen(skb);
++}
++
+ /* Local Checksum Offload.
+  * Compute outer checksum based on the assumption that the
+  * inner checksum will be offloaded later.
+diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h
+index b02af0bf5777..66f6b84df287 100644
+--- a/include/net/netfilter/nf_tables.h
++++ b/include/net/netfilter/nf_tables.h
+@@ -87,6 +87,35 @@ struct nft_regs {
+ 	};
+ };
+ 
++/* Store/load an u16 or u8 integer to/from the u32 data register.
++ *
++ * Note, when using concatenations, register allocation happens at 32-bit
++ * level. So for store instruction, pad the rest part with zero to avoid
++ * garbage values.
++ */
++
++static inline void nft_reg_store16(u32 *dreg, u16 val)
++{
++	*dreg = 0;
++	*(u16 *)dreg = val;
++}
++
++static inline void nft_reg_store8(u32 *dreg, u8 val)
++{
++	*dreg = 0;
++	*(u8 *)dreg = val;
++}
++
++static inline u16 nft_reg_load16(u32 *sreg)
++{
++	return *(u16 *)sreg;
++}
++
++static inline u8 nft_reg_load8(u32 *sreg)
++{
++	return *(u8 *)sreg;
++}
++
+ static inline void nft_data_copy(u32 *dst, const struct nft_data *src,
+ 				 unsigned int len)
+ {
+diff --git a/include/uapi/linux/if_ether.h b/include/uapi/linux/if_ether.h
+index 659b1634de61..3d3de5e9f9cc 100644
+--- a/include/uapi/linux/if_ether.h
++++ b/include/uapi/linux/if_ether.h
+@@ -139,11 +139,18 @@
+  *	This is an Ethernet frame header.
+  */
+ 
++/* allow libcs like musl to deactivate this, glibc does not implement this. */
++#ifndef __UAPI_DEF_ETHHDR
++#define __UAPI_DEF_ETHHDR		1
++#endif
++
++#if __UAPI_DEF_ETHHDR
+ struct ethhdr {
+ 	unsigned char	h_dest[ETH_ALEN];	/* destination eth addr	*/
+ 	unsigned char	h_source[ETH_ALEN];	/* source ether addr	*/
+ 	__be16		h_proto;		/* packet type ID field	*/
+ } __attribute__((packed));
++#endif
+ 
+ 
+ #endif /* _UAPI_LINUX_IF_ETHER_H */
+diff --git a/kernel/events/core.c b/kernel/events/core.c
+index 1af0bbf20984..17339506f9f8 100644
+--- a/kernel/events/core.c
++++ b/kernel/events/core.c
+@@ -4600,6 +4600,11 @@ static void __perf_event_period(struct perf_event *event,
+ 	}
+ }
+ 
++static int perf_event_check_period(struct perf_event *event, u64 value)
++{
++	return event->pmu->check_period(event, value);
++}
++
+ static int perf_event_period(struct perf_event *event, u64 __user *arg)
+ {
+ 	u64 value;
+@@ -4616,6 +4621,9 @@ static int perf_event_period(struct perf_event *event, u64 __user *arg)
+ 	if (event->attr.freq && value > sysctl_perf_event_sample_rate)
+ 		return -EINVAL;
+ 
++	if (perf_event_check_period(event, value))
++		return -EINVAL;
++
+ 	event_function_call(event, __perf_event_period, &value);
+ 
+ 	return 0;
+@@ -8622,6 +8630,11 @@ static int perf_pmu_nop_int(struct pmu *pmu)
+ 	return 0;
+ }
+ 
++static int perf_event_nop_int(struct perf_event *event, u64 value)
++{
++	return 0;
++}
++
+ static DEFINE_PER_CPU(unsigned int, nop_txn_flags);
+ 
+ static void perf_pmu_start_txn(struct pmu *pmu, unsigned int flags)
+@@ -8944,6 +8957,9 @@ got_cpu_context:
+ 		pmu->pmu_disable = perf_pmu_nop_void;
+ 	}
+ 
++	if (!pmu->check_period)
++		pmu->check_period = perf_event_nop_int;
++
+ 	if (!pmu->event_idx)
+ 		pmu->event_idx = perf_event_idx_default;
+ 
+diff --git a/kernel/events/ring_buffer.c b/kernel/events/ring_buffer.c
+index f4b5811ebe23..99becab2c1ce 100644
+--- a/kernel/events/ring_buffer.c
++++ b/kernel/events/ring_buffer.c
+@@ -700,7 +700,7 @@ struct ring_buffer *rb_alloc(int nr_pages, long watermark, int cpu, int flags)
+ 	size = sizeof(struct ring_buffer);
+ 	size += nr_pages * sizeof(void *);
+ 
+-	if (order_base_2(size) >= MAX_ORDER)
++	if (order_base_2(size) >= PAGE_SHIFT+MAX_ORDER)
+ 		goto fail;
+ 
+ 	rb = kzalloc(size, GFP_KERNEL);
+diff --git a/kernel/signal.c b/kernel/signal.c
+index 798b8f495ae2..c091dcc9f19b 100644
+--- a/kernel/signal.c
++++ b/kernel/signal.c
+@@ -2241,9 +2241,12 @@ relock:
+ 	}
+ 
+ 	/* Has this task already been marked for death? */
+-	ksig->info.si_signo = signr = SIGKILL;
+-	if (signal_group_exit(signal))
++	if (signal_group_exit(signal)) {
++		ksig->info.si_signo = signr = SIGKILL;
++		sigdelset(&current->pending.signal, SIGKILL);
++		recalc_sigpending();
+ 		goto fatal;
++	}
+ 
+ 	for (;;) {
+ 		struct k_sigaction *ka;
+diff --git a/kernel/trace/trace_uprobe.c b/kernel/trace/trace_uprobe.c
+index f0ab801a6437..c6eee3d9ed00 100644
+--- a/kernel/trace/trace_uprobe.c
++++ b/kernel/trace/trace_uprobe.c
+@@ -150,7 +150,14 @@ static void FETCH_FUNC_NAME(memory, string)(struct pt_regs *regs,
+ 
+ 	ret = strncpy_from_user(dst, src, maxlen);
+ 	if (ret == maxlen)
+-		dst[--ret] = '\0';
++		dst[ret - 1] = '\0';
++	else if (ret >= 0)
++		/*
++		 * Include the terminating null byte. In this case it
++		 * was copied by strncpy_from_user but not accounted
++		 * for in ret.
++		 */
++		ret++;
+ 
+ 	if (ret < 0) {	/* Failed to fetch string */
+ 		((u8 *)get_rloc_data(dest))[0] = '\0';
+diff --git a/mm/memory.c b/mm/memory.c
+index 35d8217bb046..47248dc0b9e1 100644
+--- a/mm/memory.c
++++ b/mm/memory.c
+@@ -3329,15 +3329,24 @@ static int do_fault(struct fault_env *fe)
+ {
+ 	struct vm_area_struct *vma = fe->vma;
+ 	pgoff_t pgoff = linear_page_index(vma, fe->address);
++	int ret;
+ 
+ 	/* The VMA was not fully populated on mmap() or missing VM_DONTEXPAND */
+ 	if (!vma->vm_ops->fault)
+-		return VM_FAULT_SIGBUS;
+-	if (!(fe->flags & FAULT_FLAG_WRITE))
+-		return do_read_fault(fe, pgoff);
+-	if (!(vma->vm_flags & VM_SHARED))
+-		return do_cow_fault(fe, pgoff);
+-	return do_shared_fault(fe, pgoff);
++		ret = VM_FAULT_SIGBUS;
++	else if (!(fe->flags & FAULT_FLAG_WRITE))
++		ret = do_read_fault(fe, pgoff);
++	else if (!(vma->vm_flags & VM_SHARED))
++		ret = do_cow_fault(fe, pgoff);
++	else
++		ret = do_shared_fault(fe, pgoff);
++
++	/* preallocated pagetable is unused: free it */
++	if (fe->prealloc_pte) {
++		pte_free(vma->vm_mm, fe->prealloc_pte);
++		fe->prealloc_pte = 0;
++	}
++	return ret;
+ }
+ 
+ static int numa_migrate_prep(struct page *page, struct vm_area_struct *vma,
+diff --git a/net/core/skbuff.c b/net/core/skbuff.c
+index dca1fed0d7da..11501165f0df 100644
+--- a/net/core/skbuff.c
++++ b/net/core/skbuff.c
+@@ -4469,37 +4469,74 @@ unsigned int skb_gso_transport_seglen(const struct sk_buff *skb)
+ EXPORT_SYMBOL_GPL(skb_gso_transport_seglen);
+ 
+ /**
+- * skb_gso_validate_mtu - Return in case such skb fits a given MTU
++ * skb_gso_size_check - check the skb size, considering GSO_BY_FRAGS
+  *
+- * @skb: GSO skb
+- * @mtu: MTU to validate against
++ * There are a couple of instances where we have a GSO skb, and we
++ * want to determine what size it would be after it is segmented.
+  *
+- * skb_gso_validate_mtu validates if a given skb will fit a wanted MTU
+- * once split.
++ * We might want to check:
++ * -    L3+L4+payload size (e.g. IP forwarding)
++ * - L2+L3+L4+payload size (e.g. sanity check before passing to driver)
++ *
++ * This is a helper to do that correctly considering GSO_BY_FRAGS.
++ *
++ * @seg_len: The segmented length (from skb_gso_*_seglen). In the
++ *           GSO_BY_FRAGS case this will be [header sizes + GSO_BY_FRAGS].
++ *
++ * @max_len: The maximum permissible length.
++ *
++ * Returns true if the segmented length <= max length.
+  */
+-bool skb_gso_validate_mtu(const struct sk_buff *skb, unsigned int mtu)
+-{
++static inline bool skb_gso_size_check(const struct sk_buff *skb,
++				      unsigned int seg_len,
++				      unsigned int max_len) {
+ 	const struct skb_shared_info *shinfo = skb_shinfo(skb);
+ 	const struct sk_buff *iter;
+-	unsigned int hlen;
+-
+-	hlen = skb_gso_network_seglen(skb);
+ 
+ 	if (shinfo->gso_size != GSO_BY_FRAGS)
+-		return hlen <= mtu;
++		return seg_len <= max_len;
+ 
+ 	/* Undo this so we can re-use header sizes */
+-	hlen -= GSO_BY_FRAGS;
++	seg_len -= GSO_BY_FRAGS;
+ 
+ 	skb_walk_frags(skb, iter) {
+-		if (hlen + skb_headlen(iter) > mtu)
++		if (seg_len + skb_headlen(iter) > max_len)
+ 			return false;
+ 	}
+ 
+ 	return true;
+ }
++
++/**
++ * skb_gso_validate_mtu - Return in case such skb fits a given MTU
++ *
++ * @skb: GSO skb
++ * @mtu: MTU to validate against
++ *
++ * skb_gso_validate_mtu validates if a given skb will fit a wanted MTU
++ * once split.
++ */
++bool skb_gso_validate_mtu(const struct sk_buff *skb, unsigned int mtu)
++{
++	return skb_gso_size_check(skb, skb_gso_network_seglen(skb), mtu);
++}
+ EXPORT_SYMBOL_GPL(skb_gso_validate_mtu);
+ 
++/**
++ * skb_gso_validate_mac_len - Will a split GSO skb fit in a given length?
++ *
++ * @skb: GSO skb
++ * @len: length to validate against
++ *
++ * skb_gso_validate_mac_len validates if a given skb will fit a wanted
++ * length once split, including L2, L3 and L4 headers and the payload.
++ */
++bool skb_gso_validate_mac_len(const struct sk_buff *skb, unsigned int len)
++{
++	return skb_gso_size_check(skb, skb_gso_mac_seglen(skb), len);
++}
++EXPORT_SYMBOL_GPL(skb_gso_validate_mac_len);
++
+ static struct sk_buff *skb_reorder_vlan_header(struct sk_buff *skb)
+ {
+ 	int mac_len;
+diff --git a/net/ipv4/netfilter/nft_masq_ipv4.c b/net/ipv4/netfilter/nft_masq_ipv4.c
+index 51ced81b616c..dc3628a396ec 100644
+--- a/net/ipv4/netfilter/nft_masq_ipv4.c
++++ b/net/ipv4/netfilter/nft_masq_ipv4.c
+@@ -26,10 +26,10 @@ static void nft_masq_ipv4_eval(const struct nft_expr *expr,
+ 	memset(&range, 0, sizeof(range));
+ 	range.flags = priv->flags;
+ 	if (priv->sreg_proto_min) {
+-		range.min_proto.all =
+-			*(__be16 *)&regs->data[priv->sreg_proto_min];
+-		range.max_proto.all =
+-			*(__be16 *)&regs->data[priv->sreg_proto_max];
++		range.min_proto.all = (__force __be16)nft_reg_load16(
++			&regs->data[priv->sreg_proto_min]);
++		range.max_proto.all = (__force __be16)nft_reg_load16(
++			&regs->data[priv->sreg_proto_max]);
+ 	}
+ 	regs->verdict.code = nf_nat_masquerade_ipv4(pkt->skb, pkt->hook,
+ 						    &range, pkt->out);
+diff --git a/net/ipv4/netfilter/nft_redir_ipv4.c b/net/ipv4/netfilter/nft_redir_ipv4.c
+index c09d4381427e..f760524e1353 100644
+--- a/net/ipv4/netfilter/nft_redir_ipv4.c
++++ b/net/ipv4/netfilter/nft_redir_ipv4.c
+@@ -26,10 +26,10 @@ static void nft_redir_ipv4_eval(const struct nft_expr *expr,
+ 
+ 	memset(&mr, 0, sizeof(mr));
+ 	if (priv->sreg_proto_min) {
+-		mr.range[0].min.all =
+-			*(__be16 *)&regs->data[priv->sreg_proto_min];
+-		mr.range[0].max.all =
+-			*(__be16 *)&regs->data[priv->sreg_proto_max];
++		mr.range[0].min.all = (__force __be16)nft_reg_load16(
++			&regs->data[priv->sreg_proto_min]);
++		mr.range[0].max.all = (__force __be16)nft_reg_load16(
++			&regs->data[priv->sreg_proto_max]);
+ 		mr.range[0].flags |= NF_NAT_RANGE_PROTO_SPECIFIED;
+ 	}
+ 
+diff --git a/net/ipv6/netfilter/nft_masq_ipv6.c b/net/ipv6/netfilter/nft_masq_ipv6.c
+index 9597ffb74077..b74a420050c4 100644
+--- a/net/ipv6/netfilter/nft_masq_ipv6.c
++++ b/net/ipv6/netfilter/nft_masq_ipv6.c
+@@ -27,10 +27,10 @@ static void nft_masq_ipv6_eval(const struct nft_expr *expr,
+ 	memset(&range, 0, sizeof(range));
+ 	range.flags = priv->flags;
+ 	if (priv->sreg_proto_min) {
+-		range.min_proto.all =
+-			*(__be16 *)&regs->data[priv->sreg_proto_min];
+-		range.max_proto.all =
+-			*(__be16 *)&regs->data[priv->sreg_proto_max];
++		range.min_proto.all = (__force __be16)nft_reg_load16(
++			&regs->data[priv->sreg_proto_min]);
++		range.max_proto.all = (__force __be16)nft_reg_load16(
++			&regs->data[priv->sreg_proto_max]);
+ 	}
+ 	regs->verdict.code = nf_nat_masquerade_ipv6(pkt->skb, &range, pkt->out);
+ }
+diff --git a/net/ipv6/netfilter/nft_redir_ipv6.c b/net/ipv6/netfilter/nft_redir_ipv6.c
+index aca44e89a881..7ef58e493fca 100644
+--- a/net/ipv6/netfilter/nft_redir_ipv6.c
++++ b/net/ipv6/netfilter/nft_redir_ipv6.c
+@@ -26,10 +26,10 @@ static void nft_redir_ipv6_eval(const struct nft_expr *expr,
+ 
+ 	memset(&range, 0, sizeof(range));
+ 	if (priv->sreg_proto_min) {
+-		range.min_proto.all =
+-			*(__be16 *)&regs->data[priv->sreg_proto_min],
+-		range.max_proto.all =
+-			*(__be16 *)&regs->data[priv->sreg_proto_max],
++		range.min_proto.all = (__force __be16)nft_reg_load16(
++			&regs->data[priv->sreg_proto_min]);
++		range.max_proto.all = (__force __be16)nft_reg_load16(
++			&regs->data[priv->sreg_proto_max]);
+ 		range.flags |= NF_NAT_RANGE_PROTO_SPECIFIED;
+ 	}
+ 
+diff --git a/net/netfilter/nft_ct.c b/net/netfilter/nft_ct.c
+index d7b0d171172a..2b9fda71fa8b 100644
+--- a/net/netfilter/nft_ct.c
++++ b/net/netfilter/nft_ct.c
+@@ -77,7 +77,7 @@ static void nft_ct_get_eval(const struct nft_expr *expr,
+ 
+ 	switch (priv->key) {
+ 	case NFT_CT_DIRECTION:
+-		*dest = CTINFO2DIR(ctinfo);
++		nft_reg_store8(dest, CTINFO2DIR(ctinfo));
+ 		return;
+ 	case NFT_CT_STATUS:
+ 		*dest = ct->status;
+@@ -129,10 +129,10 @@ static void nft_ct_get_eval(const struct nft_expr *expr,
+ 		return;
+ 	}
+ 	case NFT_CT_L3PROTOCOL:
+-		*dest = nf_ct_l3num(ct);
++		nft_reg_store8(dest, nf_ct_l3num(ct));
+ 		return;
+ 	case NFT_CT_PROTOCOL:
+-		*dest = nf_ct_protonum(ct);
++		nft_reg_store8(dest, nf_ct_protonum(ct));
+ 		return;
+ 	default:
+ 		break;
+@@ -149,10 +149,10 @@ static void nft_ct_get_eval(const struct nft_expr *expr,
+ 		       nf_ct_l3num(ct) == NFPROTO_IPV4 ? 4 : 16);
+ 		return;
+ 	case NFT_CT_PROTO_SRC:
+-		*dest = (__force __u16)tuple->src.u.all;
++		nft_reg_store16(dest, (__force u16)tuple->src.u.all);
+ 		return;
+ 	case NFT_CT_PROTO_DST:
+-		*dest = (__force __u16)tuple->dst.u.all;
++		nft_reg_store16(dest, (__force u16)tuple->dst.u.all);
+ 		return;
+ 	default:
+ 		break;
+diff --git a/net/netfilter/nft_meta.c b/net/netfilter/nft_meta.c
+index 7c3395513ff0..cec8dc0e5e6f 100644
+--- a/net/netfilter/nft_meta.c
++++ b/net/netfilter/nft_meta.c
+@@ -45,16 +45,15 @@ void nft_meta_get_eval(const struct nft_expr *expr,
+ 		*dest = skb->len;
+ 		break;
+ 	case NFT_META_PROTOCOL:
+-		*dest = 0;
+-		*(__be16 *)dest = skb->protocol;
++		nft_reg_store16(dest, (__force u16)skb->protocol);
+ 		break;
+ 	case NFT_META_NFPROTO:
+-		*dest = pkt->pf;
++		nft_reg_store8(dest, pkt->pf);
+ 		break;
+ 	case NFT_META_L4PROTO:
+ 		if (!pkt->tprot_set)
+ 			goto err;
+-		*dest = pkt->tprot;
++		nft_reg_store8(dest, pkt->tprot);
+ 		break;
+ 	case NFT_META_PRIORITY:
+ 		*dest = skb->priority;
+@@ -85,14 +84,12 @@ void nft_meta_get_eval(const struct nft_expr *expr,
+ 	case NFT_META_IIFTYPE:
+ 		if (in == NULL)
+ 			goto err;
+-		*dest = 0;
+-		*(u16 *)dest = in->type;
++		nft_reg_store16(dest, in->type);
+ 		break;
+ 	case NFT_META_OIFTYPE:
+ 		if (out == NULL)
+ 			goto err;
+-		*dest = 0;
+-		*(u16 *)dest = out->type;
++		nft_reg_store16(dest, out->type);
+ 		break;
+ 	case NFT_META_SKUID:
+ 		sk = skb_to_full_sk(skb);
+@@ -142,22 +139,22 @@ void nft_meta_get_eval(const struct nft_expr *expr,
+ #endif
+ 	case NFT_META_PKTTYPE:
+ 		if (skb->pkt_type != PACKET_LOOPBACK) {
+-			*dest = skb->pkt_type;
++			nft_reg_store8(dest, skb->pkt_type);
+ 			break;
+ 		}
+ 
+ 		switch (pkt->pf) {
+ 		case NFPROTO_IPV4:
+ 			if (ipv4_is_multicast(ip_hdr(skb)->daddr))
+-				*dest = PACKET_MULTICAST;
++				nft_reg_store8(dest, PACKET_MULTICAST);
+ 			else
+-				*dest = PACKET_BROADCAST;
++				nft_reg_store8(dest, PACKET_BROADCAST);
+ 			break;
+ 		case NFPROTO_IPV6:
+ 			if (ipv6_hdr(skb)->daddr.s6_addr[0] == 0xFF)
+-				*dest = PACKET_MULTICAST;
++				nft_reg_store8(dest, PACKET_MULTICAST);
+ 			else
+-				*dest = PACKET_BROADCAST;
++				nft_reg_store8(dest, PACKET_BROADCAST);
+ 			break;
+ 		case NFPROTO_NETDEV:
+ 			switch (skb->protocol) {
+@@ -171,14 +168,14 @@ void nft_meta_get_eval(const struct nft_expr *expr,
+ 					goto err;
+ 
+ 				if (ipv4_is_multicast(iph->daddr))
+-					*dest = PACKET_MULTICAST;
++					nft_reg_store8(dest, PACKET_MULTICAST);
+ 				else
+-					*dest = PACKET_BROADCAST;
++					nft_reg_store8(dest, PACKET_BROADCAST);
+ 
+ 				break;
+ 			}
+ 			case htons(ETH_P_IPV6):
+-				*dest = PACKET_MULTICAST;
++				nft_reg_store8(dest, PACKET_MULTICAST);
+ 				break;
+ 			default:
+ 				WARN_ON_ONCE(1);
+@@ -233,7 +230,9 @@ void nft_meta_set_eval(const struct nft_expr *expr,
+ {
+ 	const struct nft_meta *meta = nft_expr_priv(expr);
+ 	struct sk_buff *skb = pkt->skb;
+-	u32 value = regs->data[meta->sreg];
++	u32 *sreg = &regs->data[meta->sreg];
++	u32 value = *sreg;
++	u8 pkt_type;
+ 
+ 	switch (meta->key) {
+ 	case NFT_META_MARK:
+@@ -243,9 +242,12 @@ void nft_meta_set_eval(const struct nft_expr *expr,
+ 		skb->priority = value;
+ 		break;
+ 	case NFT_META_PKTTYPE:
+-		if (skb->pkt_type != value &&
+-		    skb_pkt_type_ok(value) && skb_pkt_type_ok(skb->pkt_type))
+-			skb->pkt_type = value;
++		pkt_type = nft_reg_load8(sreg);
++
++		if (skb->pkt_type != pkt_type &&
++		    skb_pkt_type_ok(pkt_type) &&
++		    skb_pkt_type_ok(skb->pkt_type))
++			skb->pkt_type = pkt_type;
+ 		break;
+ 	case NFT_META_NFTRACE:
+ 		skb->nf_trace = !!value;
+diff --git a/net/netfilter/nft_nat.c b/net/netfilter/nft_nat.c
+index ee2d71753746..4c48e9bb21e2 100644
+--- a/net/netfilter/nft_nat.c
++++ b/net/netfilter/nft_nat.c
+@@ -65,10 +65,10 @@ static void nft_nat_eval(const struct nft_expr *expr,
+ 	}
+ 
+ 	if (priv->sreg_proto_min) {
+-		range.min_proto.all =
+-			*(__be16 *)&regs->data[priv->sreg_proto_min];
+-		range.max_proto.all =
+-			*(__be16 *)&regs->data[priv->sreg_proto_max];
++		range.min_proto.all = (__force __be16)nft_reg_load16(
++			&regs->data[priv->sreg_proto_min]);
++		range.max_proto.all = (__force __be16)nft_reg_load16(
++			&regs->data[priv->sreg_proto_max]);
+ 		range.flags |= NF_NAT_RANGE_PROTO_SPECIFIED;
+ 	}
+ 
+diff --git a/net/sched/sch_tbf.c b/net/sched/sch_tbf.c
+index b3f7980b0f27..d646aa770ac8 100644
+--- a/net/sched/sch_tbf.c
++++ b/net/sched/sch_tbf.c
+@@ -142,16 +142,6 @@ static u64 psched_ns_t2l(const struct psched_ratecfg *r,
+ 	return len;
+ }
+ 
+-/*
+- * Return length of individual segments of a gso packet,
+- * including all headers (MAC, IP, TCP/UDP)
+- */
+-static unsigned int skb_gso_mac_seglen(const struct sk_buff *skb)
+-{
+-	unsigned int hdr_len = skb_transport_header(skb) - skb_mac_header(skb);
+-	return hdr_len + skb_gso_transport_seglen(skb);
+-}
+-
+ /* GSO packet is too big, segment it so that tbf can transmit
+  * each segment in time
+  */
+diff --git a/sound/pci/hda/patch_conexant.c b/sound/pci/hda/patch_conexant.c
+index ba9cd75e4c98..447b3a8a83c3 100644
+--- a/sound/pci/hda/patch_conexant.c
++++ b/sound/pci/hda/patch_conexant.c
+@@ -854,6 +854,7 @@ static const struct snd_pci_quirk cxt5066_fixups[] = {
+ 	SND_PCI_QUIRK(0x103c, 0x807C, "HP EliteBook 820 G3", CXT_FIXUP_HP_DOCK),
+ 	SND_PCI_QUIRK(0x103c, 0x80FD, "HP ProBook 640 G2", CXT_FIXUP_HP_DOCK),
+ 	SND_PCI_QUIRK(0x103c, 0x828c, "HP EliteBook 840 G4", CXT_FIXUP_HP_DOCK),
++	SND_PCI_QUIRK(0x103c, 0x83b2, "HP EliteBook 840 G5", CXT_FIXUP_HP_DOCK),
+ 	SND_PCI_QUIRK(0x103c, 0x83b3, "HP EliteBook 830 G5", CXT_FIXUP_HP_DOCK),
+ 	SND_PCI_QUIRK(0x103c, 0x83d3, "HP ProBook 640 G4", CXT_FIXUP_HP_DOCK),
+ 	SND_PCI_QUIRK(0x103c, 0x8174, "HP Spectre x360", CXT_FIXUP_HP_SPECTRE),
+diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c
+index e6ac7b9b4648..497bad9f2789 100644
+--- a/sound/usb/pcm.c
++++ b/sound/usb/pcm.c
+@@ -313,6 +313,9 @@ static int search_roland_implicit_fb(struct usb_device *dev, int ifnum,
+ 	return 0;
+ }
+ 
++/* Setup an implicit feedback endpoint from a quirk. Returns 0 if no quirk
++ * applies. Returns 1 if a quirk was found.
++ */
+ static int set_sync_ep_implicit_fb_quirk(struct snd_usb_substream *subs,
+ 					 struct usb_device *dev,
+ 					 struct usb_interface_descriptor *altsd,
+@@ -391,7 +394,7 @@ add_sync_ep:
+ 
+ 	subs->data_endpoint->sync_master = subs->sync_endpoint;
+ 
+-	return 0;
++	return 1;
+ }
+ 
+ static int set_sync_endpoint(struct snd_usb_substream *subs,
+@@ -430,6 +433,10 @@ static int set_sync_endpoint(struct snd_usb_substream *subs,
+ 	if (err < 0)
+ 		return err;
+ 
++	/* endpoint set by quirk */
++	if (err > 0)
++		return 0;
++
+ 	if (altsd->bNumEndpoints < 2)
+ 		return 0;
+ 
+diff --git a/tools/perf/util/unwind-libdw.c b/tools/perf/util/unwind-libdw.c
+index 046a4850e3df..ff32ca1d81ff 100644
+--- a/tools/perf/util/unwind-libdw.c
++++ b/tools/perf/util/unwind-libdw.c
+@@ -231,7 +231,7 @@ int unwind__get_entries(unwind_entry_cb_t cb, void *arg,
+ 
+ 	err = dwfl_getthread_frames(ui->dwfl, thread->tid, frame_callback, ui);
+ 
+-	if (err && !ui->max_stack)
++	if (err && ui->max_stack != max_stack)
+ 		err = 0;
+ 
+ 	/*