[gentoo-commits] proj/linux-patches:4.9 commit in: /

[Mike Pagano]

commit:     2ac2e047bfb433ba7d1057e38133e6c069d0d53b
Author:     Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Sat Oct 13 16:34:16 2018 +0000
Commit:     Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Sat Oct 13 16:34:16 2018 +0000
URL:        https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=2ac2e047

Linux patch 4.9.133

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

 0000_README              |    4 +
 1132_linux-4.9.133.patch | 1471 ++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 1475 insertions(+)

diff --git a/0000_README b/0000_README
index 5814ba5..5ccf4d0 100644
--- a/0000_README
+++ b/0000_README
@@ -571,6 +571,10 @@ Patch:  1130_linux-4.9.132.patch
 From:   http://www.kernel.org
 Desc:   Linux 4.9.132
 
+Patch:  1130_linux-4.9.133.patch
+From:   http://www.kernel.org
+Desc:   Linux 4.9.133
+
 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/1132_linux-4.9.133.patch b/1132_linux-4.9.133.patch
new file mode 100644
index 0000000..6f23eca
--- /dev/null
+++ b/1132_linux-4.9.133.patch
@@ -0,0 +1,1471 @@
+diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
+index a36a695318c6..f9f67be8d3c3 100644
+--- a/Documentation/kernel-parameters.txt
++++ b/Documentation/kernel-parameters.txt
+@@ -1084,12 +1084,6 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
+ 	nopku		[X86] Disable Memory Protection Keys CPU feature found
+ 			in some Intel CPUs.
+ 
+-	eagerfpu=	[X86]
+-			on	enable eager fpu restore
+-			off	disable eager fpu restore
+-			auto	selects the default scheme, which automatically
+-				enables eagerfpu restore for xsaveopt.
+-
+ 	module.async_probe [KNL]
+ 			Enable asynchronous probe on this module.
+ 
+diff --git a/Makefile b/Makefile
+index a46c9788ca67..18090f899a7c 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 9
+-SUBLEVEL = 132
++SUBLEVEL = 133
+ EXTRAVERSION =
+ NAME = Roaring Lionus
+ 
+diff --git a/arch/arc/kernel/process.c b/arch/arc/kernel/process.c
+index 0e8c0151a390..3ce12137f94f 100644
+--- a/arch/arc/kernel/process.c
++++ b/arch/arc/kernel/process.c
+@@ -213,6 +213,26 @@ int copy_thread(unsigned long clone_flags,
+ 		task_thread_info(current)->thr_ptr;
+ 	}
+ 
++
++	/*
++	 * setup usermode thread pointer #1:
++	 * when child is picked by scheduler, __switch_to() uses @c_callee to
++	 * populate usermode callee regs: this works (despite being in a kernel
++	 * function) since special return path for child @ret_from_fork()
++	 * ensures those regs are not clobbered all the way to RTIE to usermode
++	 */
++	c_callee->r25 = task_thread_info(p)->thr_ptr;
++
++#ifdef CONFIG_ARC_CURR_IN_REG
++	/*
++	 * setup usermode thread pointer #2:
++	 * however for this special use of r25 in kernel, __switch_to() sets
++	 * r25 for kernel needs and only in the final return path is usermode
++	 * r25 setup, from pt_regs->user_r25. So set that up as well
++	 */
++	c_regs->user_r25 = c_callee->r25;
++#endif
++
+ 	return 0;
+ }
+ 
+diff --git a/arch/powerpc/kernel/fadump.c b/arch/powerpc/kernel/fadump.c
+index e3acf5c3480e..02925043575a 100644
+--- a/arch/powerpc/kernel/fadump.c
++++ b/arch/powerpc/kernel/fadump.c
+@@ -365,9 +365,9 @@ static int __init early_fadump_reserve_mem(char *p)
+ }
+ early_param("fadump_reserve_mem", early_fadump_reserve_mem);
+ 
+-static void register_fw_dump(struct fadump_mem_struct *fdm)
++static int register_fw_dump(struct fadump_mem_struct *fdm)
+ {
+-	int rc;
++	int rc, err;
+ 	unsigned int wait_time;
+ 
+ 	pr_debug("Registering for firmware-assisted kernel dump...\n");
+@@ -384,7 +384,11 @@ static void register_fw_dump(struct fadump_mem_struct *fdm)
+ 
+ 	} while (wait_time);
+ 
++	err = -EIO;
+ 	switch (rc) {
++	default:
++		pr_err("Failed to register. Unknown Error(%d).\n", rc);
++		break;
+ 	case -1:
+ 		printk(KERN_ERR "Failed to register firmware-assisted kernel"
+ 			" dump. Hardware Error(%d).\n", rc);
+@@ -392,18 +396,22 @@ static void register_fw_dump(struct fadump_mem_struct *fdm)
+ 	case -3:
+ 		printk(KERN_ERR "Failed to register firmware-assisted kernel"
+ 			" dump. Parameter Error(%d).\n", rc);
++		err = -EINVAL;
+ 		break;
+ 	case -9:
+ 		printk(KERN_ERR "firmware-assisted kernel dump is already "
+ 			" registered.");
+ 		fw_dump.dump_registered = 1;
++		err = -EEXIST;
+ 		break;
+ 	case 0:
+ 		printk(KERN_INFO "firmware-assisted kernel dump registration"
+ 			" is successful\n");
+ 		fw_dump.dump_registered = 1;
++		err = 0;
+ 		break;
+ 	}
++	return err;
+ }
+ 
+ void crash_fadump(struct pt_regs *regs, const char *str)
+@@ -1006,7 +1014,7 @@ static unsigned long init_fadump_header(unsigned long addr)
+ 	return addr;
+ }
+ 
+-static void register_fadump(void)
++static int register_fadump(void)
+ {
+ 	unsigned long addr;
+ 	void *vaddr;
+@@ -1017,7 +1025,7 @@ static void register_fadump(void)
+ 	 * assisted dump.
+ 	 */
+ 	if (!fw_dump.reserve_dump_area_size)
+-		return;
++		return -ENODEV;
+ 
+ 	ret = fadump_setup_crash_memory_ranges();
+ 	if (ret)
+@@ -1032,7 +1040,7 @@ static void register_fadump(void)
+ 	fadump_create_elfcore_headers(vaddr);
+ 
+ 	/* register the future kernel dump with firmware. */
+-	register_fw_dump(&fdm);
++	return register_fw_dump(&fdm);
+ }
+ 
+ static int fadump_unregister_dump(struct fadump_mem_struct *fdm)
+@@ -1218,7 +1226,6 @@ static ssize_t fadump_register_store(struct kobject *kobj,
+ 	switch (buf[0]) {
+ 	case '0':
+ 		if (fw_dump.dump_registered == 0) {
+-			ret = -EINVAL;
+ 			goto unlock_out;
+ 		}
+ 		/* Un-register Firmware-assisted dump */
+@@ -1226,11 +1233,11 @@ static ssize_t fadump_register_store(struct kobject *kobj,
+ 		break;
+ 	case '1':
+ 		if (fw_dump.dump_registered == 1) {
+-			ret = -EINVAL;
++			ret = -EEXIST;
+ 			goto unlock_out;
+ 		}
+ 		/* Register Firmware-assisted dump */
+-		register_fadump();
++		ret = register_fadump();
+ 		break;
+ 	default:
+ 		ret = -EINVAL;
+diff --git a/arch/x86/crypto/crc32c-intel_glue.c b/arch/x86/crypto/crc32c-intel_glue.c
+index dd1958436591..5773e1161072 100644
+--- a/arch/x86/crypto/crc32c-intel_glue.c
++++ b/arch/x86/crypto/crc32c-intel_glue.c
+@@ -48,21 +48,13 @@
+ #ifdef CONFIG_X86_64
+ /*
+  * use carryless multiply version of crc32c when buffer
+- * size is >= 512 (when eager fpu is enabled) or
+- * >= 1024 (when eager fpu is disabled) to account
++ * size is >= 512 to account
+  * for fpu state save/restore overhead.
+  */
+-#define CRC32C_PCL_BREAKEVEN_EAGERFPU	512
+-#define CRC32C_PCL_BREAKEVEN_NOEAGERFPU	1024
++#define CRC32C_PCL_BREAKEVEN	512
+ 
+ asmlinkage unsigned int crc_pcl(const u8 *buffer, int len,
+ 				unsigned int crc_init);
+-static int crc32c_pcl_breakeven = CRC32C_PCL_BREAKEVEN_EAGERFPU;
+-#define set_pcl_breakeven_point()					\
+-do {									\
+-	if (!use_eager_fpu())						\
+-		crc32c_pcl_breakeven = CRC32C_PCL_BREAKEVEN_NOEAGERFPU;	\
+-} while (0)
+ #endif /* CONFIG_X86_64 */
+ 
+ static u32 crc32c_intel_le_hw_byte(u32 crc, unsigned char const *data, size_t length)
+@@ -185,7 +177,7 @@ static int crc32c_pcl_intel_update(struct shash_desc *desc, const u8 *data,
+ 	 * use faster PCL version if datasize is large enough to
+ 	 * overcome kernel fpu state save/restore overhead
+ 	 */
+-	if (len >= crc32c_pcl_breakeven && irq_fpu_usable()) {
++	if (len >= CRC32C_PCL_BREAKEVEN && irq_fpu_usable()) {
+ 		kernel_fpu_begin();
+ 		*crcp = crc_pcl(data, len, *crcp);
+ 		kernel_fpu_end();
+@@ -197,7 +189,7 @@ static int crc32c_pcl_intel_update(struct shash_desc *desc, const u8 *data,
+ static int __crc32c_pcl_intel_finup(u32 *crcp, const u8 *data, unsigned int len,
+ 				u8 *out)
+ {
+-	if (len >= crc32c_pcl_breakeven && irq_fpu_usable()) {
++	if (len >= CRC32C_PCL_BREAKEVEN && irq_fpu_usable()) {
+ 		kernel_fpu_begin();
+ 		*(__le32 *)out = ~cpu_to_le32(crc_pcl(data, len, *crcp));
+ 		kernel_fpu_end();
+@@ -257,7 +249,6 @@ static int __init crc32c_intel_mod_init(void)
+ 		alg.update = crc32c_pcl_intel_update;
+ 		alg.finup = crc32c_pcl_intel_finup;
+ 		alg.digest = crc32c_pcl_intel_digest;
+-		set_pcl_breakeven_point();
+ 	}
+ #endif
+ 	return crypto_register_shash(&alg);
+diff --git a/arch/x86/entry/vdso/vclock_gettime.c b/arch/x86/entry/vdso/vclock_gettime.c
+index 02223cb4bcfd..1e967099ae51 100644
+--- a/arch/x86/entry/vdso/vclock_gettime.c
++++ b/arch/x86/entry/vdso/vclock_gettime.c
+@@ -37,8 +37,9 @@ extern u8 pvclock_page
+ notrace static long vdso_fallback_gettime(long clock, struct timespec *ts)
+ {
+ 	long ret;
+-	asm("syscall" : "=a" (ret) :
+-	    "0" (__NR_clock_gettime), "D" (clock), "S" (ts) : "memory");
++	asm ("syscall" : "=a" (ret), "=m" (*ts) :
++	     "0" (__NR_clock_gettime), "D" (clock), "S" (ts) :
++	     "memory", "rcx", "r11");
+ 	return ret;
+ }
+ 
+@@ -46,8 +47,9 @@ notrace static long vdso_fallback_gtod(struct timeval *tv, struct timezone *tz)
+ {
+ 	long ret;
+ 
+-	asm("syscall" : "=a" (ret) :
+-	    "0" (__NR_gettimeofday), "D" (tv), "S" (tz) : "memory");
++	asm ("syscall" : "=a" (ret), "=m" (*tv), "=m" (*tz) :
++	     "0" (__NR_gettimeofday), "D" (tv), "S" (tz) :
++	     "memory", "rcx", "r11");
+ 	return ret;
+ }
+ 
+@@ -58,13 +60,13 @@ notrace static long vdso_fallback_gettime(long clock, struct timespec *ts)
+ {
+ 	long ret;
+ 
+-	asm(
++	asm (
+ 		"mov %%ebx, %%edx \n"
+-		"mov %2, %%ebx \n"
++		"mov %[clock], %%ebx \n"
+ 		"call __kernel_vsyscall \n"
+ 		"mov %%edx, %%ebx \n"
+-		: "=a" (ret)
+-		: "0" (__NR_clock_gettime), "g" (clock), "c" (ts)
++		: "=a" (ret), "=m" (*ts)
++		: "0" (__NR_clock_gettime), [clock] "g" (clock), "c" (ts)
+ 		: "memory", "edx");
+ 	return ret;
+ }
+@@ -73,13 +75,13 @@ notrace static long vdso_fallback_gtod(struct timeval *tv, struct timezone *tz)
+ {
+ 	long ret;
+ 
+-	asm(
++	asm (
+ 		"mov %%ebx, %%edx \n"
+-		"mov %2, %%ebx \n"
++		"mov %[tv], %%ebx \n"
+ 		"call __kernel_vsyscall \n"
+ 		"mov %%edx, %%ebx \n"
+-		: "=a" (ret)
+-		: "0" (__NR_gettimeofday), "g" (tv), "c" (tz)
++		: "=a" (ret), "=m" (*tv), "=m" (*tz)
++		: "0" (__NR_gettimeofday), [tv] "g" (tv), "c" (tz)
+ 		: "memory", "edx");
+ 	return ret;
+ }
+diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h
+index fbc1474960e3..f6d1bc93589c 100644
+--- a/arch/x86/include/asm/cpufeatures.h
++++ b/arch/x86/include/asm/cpufeatures.h
+@@ -104,7 +104,6 @@
+ #define X86_FEATURE_EXTD_APICID	( 3*32+26) /* has extended APICID (8 bits) */
+ #define X86_FEATURE_AMD_DCM     ( 3*32+27) /* multi-node processor */
+ #define X86_FEATURE_APERFMPERF	( 3*32+28) /* APERFMPERF */
+-/* free, was #define X86_FEATURE_EAGER_FPU	( 3*32+29) * "eagerfpu" Non lazy FPU restore */
+ #define X86_FEATURE_NONSTOP_TSC_S3 ( 3*32+30) /* TSC doesn't stop in S3 state */
+ 
+ /* Intel-defined CPU features, CPUID level 0x00000001 (ecx), word 4 */
+diff --git a/arch/x86/include/asm/fixmap.h b/arch/x86/include/asm/fixmap.h
+index 8554f960e21b..25152843dd1f 100644
+--- a/arch/x86/include/asm/fixmap.h
++++ b/arch/x86/include/asm/fixmap.h
+@@ -14,6 +14,16 @@
+ #ifndef _ASM_X86_FIXMAP_H
+ #define _ASM_X86_FIXMAP_H
+ 
++/*
++ * Exposed to assembly code for setting up initial page tables. Cannot be
++ * calculated in assembly code (fixmap entries are an enum), but is sanity
++ * checked in the actual fixmap C code to make sure that the fixmap is
++ * covered fully.
++ */
++#define FIXMAP_PMD_NUM	2
++/* fixmap starts downwards from the 507th entry in level2_fixmap_pgt */
++#define FIXMAP_PMD_TOP	507
++
+ #ifndef __ASSEMBLY__
+ #include <linux/kernel.h>
+ #include <asm/acpi.h>
+diff --git a/arch/x86/include/asm/fpu/internal.h b/arch/x86/include/asm/fpu/internal.h
+index 8852e3afa1ad..499d6ed0e376 100644
+--- a/arch/x86/include/asm/fpu/internal.h
++++ b/arch/x86/include/asm/fpu/internal.h
+@@ -60,11 +60,6 @@ extern u64 fpu__get_supported_xfeatures_mask(void);
+ /*
+  * FPU related CPU feature flag helper routines:
+  */
+-static __always_inline __pure bool use_eager_fpu(void)
+-{
+-	return true;
+-}
+-
+ static __always_inline __pure bool use_xsaveopt(void)
+ {
+ 	return static_cpu_has(X86_FEATURE_XSAVEOPT);
+@@ -501,24 +496,6 @@ static inline int fpu_want_lazy_restore(struct fpu *fpu, unsigned int cpu)
+ }
+ 
+ 
+-/*
+- * Wrap lazy FPU TS handling in a 'hw fpregs activation/deactivation'
+- * idiom, which is then paired with the sw-flag (fpregs_active) later on:
+- */
+-
+-static inline void __fpregs_activate_hw(void)
+-{
+-	if (!use_eager_fpu())
+-		clts();
+-}
+-
+-static inline void __fpregs_deactivate_hw(void)
+-{
+-	if (!use_eager_fpu())
+-		stts();
+-}
+-
+-/* Must be paired with an 'stts' (fpregs_deactivate_hw()) after! */
+ static inline void __fpregs_deactivate(struct fpu *fpu)
+ {
+ 	WARN_ON_FPU(!fpu->fpregs_active);
+@@ -528,7 +505,6 @@ static inline void __fpregs_deactivate(struct fpu *fpu)
+ 	trace_x86_fpu_regs_deactivated(fpu);
+ }
+ 
+-/* Must be paired with a 'clts' (fpregs_activate_hw()) before! */
+ static inline void __fpregs_activate(struct fpu *fpu)
+ {
+ 	WARN_ON_FPU(fpu->fpregs_active);
+@@ -554,22 +530,17 @@ static inline int fpregs_active(void)
+ }
+ 
+ /*
+- * Encapsulate the CR0.TS handling together with the
+- * software flag.
+- *
+  * These generally need preemption protection to work,
+  * do try to avoid using these on their own.
+  */
+ static inline void fpregs_activate(struct fpu *fpu)
+ {
+-	__fpregs_activate_hw();
+ 	__fpregs_activate(fpu);
+ }
+ 
+ static inline void fpregs_deactivate(struct fpu *fpu)
+ {
+ 	__fpregs_deactivate(fpu);
+-	__fpregs_deactivate_hw();
+ }
+ 
+ /*
+@@ -596,8 +567,7 @@ switch_fpu_prepare(struct fpu *old_fpu, struct fpu *new_fpu, int cpu)
+ 	 * or if the past 5 consecutive context-switches used math.
+ 	 */
+ 	fpu.preload = static_cpu_has(X86_FEATURE_FPU) &&
+-		      new_fpu->fpstate_active &&
+-		      (use_eager_fpu() || new_fpu->counter > 5);
++		      new_fpu->fpstate_active;
+ 
+ 	if (old_fpu->fpregs_active) {
+ 		if (!copy_fpregs_to_fpstate(old_fpu))
+@@ -611,18 +581,13 @@ switch_fpu_prepare(struct fpu *old_fpu, struct fpu *new_fpu, int cpu)
+ 
+ 		/* Don't change CR0.TS if we just switch! */
+ 		if (fpu.preload) {
+-			new_fpu->counter++;
+ 			__fpregs_activate(new_fpu);
+ 			trace_x86_fpu_regs_activated(new_fpu);
+ 			prefetch(&new_fpu->state);
+-		} else {
+-			__fpregs_deactivate_hw();
+ 		}
+ 	} else {
+-		old_fpu->counter = 0;
+ 		old_fpu->last_cpu = -1;
+ 		if (fpu.preload) {
+-			new_fpu->counter++;
+ 			if (fpu_want_lazy_restore(new_fpu, cpu))
+ 				fpu.preload = 0;
+ 			else
+diff --git a/arch/x86/include/asm/fpu/types.h b/arch/x86/include/asm/fpu/types.h
+index 48df486b02f9..3c80f5b9c09d 100644
+--- a/arch/x86/include/asm/fpu/types.h
++++ b/arch/x86/include/asm/fpu/types.h
+@@ -321,17 +321,6 @@ struct fpu {
+ 	 */
+ 	unsigned char			fpregs_active;
+ 
+-	/*
+-	 * @counter:
+-	 *
+-	 * This counter contains the number of consecutive context switches
+-	 * during which the FPU stays used. If this is over a threshold, the
+-	 * lazy FPU restore logic becomes eager, to save the trap overhead.
+-	 * This is an unsigned char so that after 256 iterations the counter
+-	 * wraps and the context switch behavior turns lazy again; this is to
+-	 * deal with bursty apps that only use the FPU for a short time:
+-	 */
+-	unsigned char			counter;
+ 	/*
+ 	 * @state:
+ 	 *
+@@ -340,29 +329,6 @@ struct fpu {
+ 	 * the registers in the FPU are more recent than this state
+ 	 * copy. If the task context-switches away then they get
+ 	 * saved here and represent the FPU state.
+-	 *
+-	 * After context switches there may be a (short) time period
+-	 * during which the in-FPU hardware registers are unchanged
+-	 * and still perfectly match this state, if the tasks
+-	 * scheduled afterwards are not using the FPU.
+-	 *
+-	 * This is the 'lazy restore' window of optimization, which
+-	 * we track though 'fpu_fpregs_owner_ctx' and 'fpu->last_cpu'.
+-	 *
+-	 * We detect whether a subsequent task uses the FPU via setting
+-	 * CR0::TS to 1, which causes any FPU use to raise a #NM fault.
+-	 *
+-	 * During this window, if the task gets scheduled again, we
+-	 * might be able to skip having to do a restore from this
+-	 * memory buffer to the hardware registers - at the cost of
+-	 * incurring the overhead of #NM fault traps.
+-	 *
+-	 * Note that on modern CPUs that support the XSAVEOPT (or other
+-	 * optimized XSAVE instructions), we don't use #NM traps anymore,
+-	 * as the hardware can track whether FPU registers need saving
+-	 * or not. On such CPUs we activate the non-lazy ('eagerfpu')
+-	 * logic, which unconditionally saves/restores all FPU state
+-	 * across context switches. (if FPU state exists.)
+ 	 */
+ 	union fpregs_state		state;
+ 	/*
+diff --git a/arch/x86/include/asm/pgtable_64.h b/arch/x86/include/asm/pgtable_64.h
+index 221a32ed1372..d5c4df98aac3 100644
+--- a/arch/x86/include/asm/pgtable_64.h
++++ b/arch/x86/include/asm/pgtable_64.h
+@@ -13,13 +13,14 @@
+ #include <asm/processor.h>
+ #include <linux/bitops.h>
+ #include <linux/threads.h>
++#include <asm/fixmap.h>
+ 
+ extern pud_t level3_kernel_pgt[512];
+ extern pud_t level3_ident_pgt[512];
+ extern pmd_t level2_kernel_pgt[512];
+ extern pmd_t level2_fixmap_pgt[512];
+ extern pmd_t level2_ident_pgt[512];
+-extern pte_t level1_fixmap_pgt[512];
++extern pte_t level1_fixmap_pgt[512 * FIXMAP_PMD_NUM];
+ extern pgd_t init_level4_pgt[];
+ 
+ #define swapper_pg_dir init_level4_pgt
+diff --git a/arch/x86/include/asm/trace/fpu.h b/arch/x86/include/asm/trace/fpu.h
+index 9217ab1f5bf6..342e59789fcd 100644
+--- a/arch/x86/include/asm/trace/fpu.h
++++ b/arch/x86/include/asm/trace/fpu.h
+@@ -14,7 +14,6 @@ DECLARE_EVENT_CLASS(x86_fpu,
+ 		__field(struct fpu *, fpu)
+ 		__field(bool, fpregs_active)
+ 		__field(bool, fpstate_active)
+-		__field(int, counter)
+ 		__field(u64, xfeatures)
+ 		__field(u64, xcomp_bv)
+ 		),
+@@ -23,17 +22,15 @@ DECLARE_EVENT_CLASS(x86_fpu,
+ 		__entry->fpu		= fpu;
+ 		__entry->fpregs_active	= fpu->fpregs_active;
+ 		__entry->fpstate_active	= fpu->fpstate_active;
+-		__entry->counter	= fpu->counter;
+ 		if (boot_cpu_has(X86_FEATURE_OSXSAVE)) {
+ 			__entry->xfeatures = fpu->state.xsave.header.xfeatures;
+ 			__entry->xcomp_bv  = fpu->state.xsave.header.xcomp_bv;
+ 		}
+ 	),
+-	TP_printk("x86/fpu: %p fpregs_active: %d fpstate_active: %d counter: %d xfeatures: %llx xcomp_bv: %llx",
++	TP_printk("x86/fpu: %p fpregs_active: %d fpstate_active: %d xfeatures: %llx xcomp_bv: %llx",
+ 			__entry->fpu,
+ 			__entry->fpregs_active,
+ 			__entry->fpstate_active,
+-			__entry->counter,
+ 			__entry->xfeatures,
+ 			__entry->xcomp_bv
+ 	)
+diff --git a/arch/x86/kernel/fpu/core.c b/arch/x86/kernel/fpu/core.c
+index 430c095cfa0e..fc965118d2e6 100644
+--- a/arch/x86/kernel/fpu/core.c
++++ b/arch/x86/kernel/fpu/core.c
+@@ -59,27 +59,9 @@ static bool kernel_fpu_disabled(void)
+ 	return this_cpu_read(in_kernel_fpu);
+ }
+ 
+-/*
+- * Were we in an interrupt that interrupted kernel mode?
+- *
+- * On others, we can do a kernel_fpu_begin/end() pair *ONLY* if that
+- * pair does nothing at all: the thread must not have fpu (so
+- * that we don't try to save the FPU state), and TS must
+- * be set (so that the clts/stts pair does nothing that is
+- * visible in the interrupted kernel thread).
+- *
+- * Except for the eagerfpu case when we return true; in the likely case
+- * the thread has FPU but we are not going to set/clear TS.
+- */
+ static bool interrupted_kernel_fpu_idle(void)
+ {
+-	if (kernel_fpu_disabled())
+-		return false;
+-
+-	if (use_eager_fpu())
+-		return true;
+-
+-	return !current->thread.fpu.fpregs_active && (read_cr0() & X86_CR0_TS);
++	return !kernel_fpu_disabled();
+ }
+ 
+ /*
+@@ -127,7 +109,6 @@ void __kernel_fpu_begin(void)
+ 		copy_fpregs_to_fpstate(fpu);
+ 	} else {
+ 		this_cpu_write(fpu_fpregs_owner_ctx, NULL);
+-		__fpregs_activate_hw();
+ 	}
+ }
+ EXPORT_SYMBOL(__kernel_fpu_begin);
+@@ -138,8 +119,6 @@ void __kernel_fpu_end(void)
+ 
+ 	if (fpu->fpregs_active)
+ 		copy_kernel_to_fpregs(&fpu->state);
+-	else
+-		__fpregs_deactivate_hw();
+ 
+ 	kernel_fpu_enable();
+ }
+@@ -201,10 +180,7 @@ void fpu__save(struct fpu *fpu)
+ 	trace_x86_fpu_before_save(fpu);
+ 	if (fpu->fpregs_active) {
+ 		if (!copy_fpregs_to_fpstate(fpu)) {
+-			if (use_eager_fpu())
+-				copy_kernel_to_fpregs(&fpu->state);
+-			else
+-				fpregs_deactivate(fpu);
++			copy_kernel_to_fpregs(&fpu->state);
+ 		}
+ 	}
+ 	trace_x86_fpu_after_save(fpu);
+@@ -249,7 +225,6 @@ EXPORT_SYMBOL_GPL(fpstate_init);
+ 
+ int fpu__copy(struct fpu *dst_fpu, struct fpu *src_fpu)
+ {
+-	dst_fpu->counter = 0;
+ 	dst_fpu->fpregs_active = 0;
+ 	dst_fpu->last_cpu = -1;
+ 
+@@ -262,8 +237,7 @@ int fpu__copy(struct fpu *dst_fpu, struct fpu *src_fpu)
+ 	 * Don't let 'init optimized' areas of the XSAVE area
+ 	 * leak into the child task:
+ 	 */
+-	if (use_eager_fpu())
+-		memset(&dst_fpu->state.xsave, 0, fpu_kernel_xstate_size);
++	memset(&dst_fpu->state.xsave, 0, fpu_kernel_xstate_size);
+ 
+ 	/*
+ 	 * Save current FPU registers directly into the child
+@@ -285,10 +259,7 @@ int fpu__copy(struct fpu *dst_fpu, struct fpu *src_fpu)
+ 		memcpy(&src_fpu->state, &dst_fpu->state,
+ 		       fpu_kernel_xstate_size);
+ 
+-		if (use_eager_fpu())
+-			copy_kernel_to_fpregs(&src_fpu->state);
+-		else
+-			fpregs_deactivate(src_fpu);
++		copy_kernel_to_fpregs(&src_fpu->state);
+ 	}
+ 	preempt_enable();
+ 
+@@ -461,7 +432,6 @@ void fpu__restore(struct fpu *fpu)
+ 	trace_x86_fpu_before_restore(fpu);
+ 	fpregs_activate(fpu);
+ 	copy_kernel_to_fpregs(&fpu->state);
+-	fpu->counter++;
+ 	trace_x86_fpu_after_restore(fpu);
+ 	kernel_fpu_enable();
+ }
+@@ -479,7 +449,6 @@ EXPORT_SYMBOL_GPL(fpu__restore);
+ void fpu__drop(struct fpu *fpu)
+ {
+ 	preempt_disable();
+-	fpu->counter = 0;
+ 
+ 	if (fpu->fpregs_active) {
+ 		/* Ignore delayed exceptions from user space */
+diff --git a/arch/x86/kernel/fpu/signal.c b/arch/x86/kernel/fpu/signal.c
+index 3ec0d2d64601..3a9318610c4d 100644
+--- a/arch/x86/kernel/fpu/signal.c
++++ b/arch/x86/kernel/fpu/signal.c
+@@ -344,11 +344,9 @@ static int __fpu__restore_sig(void __user *buf, void __user *buf_fx, int size)
+ 		}
+ 
+ 		fpu->fpstate_active = 1;
+-		if (use_eager_fpu()) {
+-			preempt_disable();
+-			fpu__restore(fpu);
+-			preempt_enable();
+-		}
++		preempt_disable();
++		fpu__restore(fpu);
++		preempt_enable();
+ 
+ 		return err;
+ 	} else {
+diff --git a/arch/x86/kernel/fpu/xstate.c b/arch/x86/kernel/fpu/xstate.c
+index abfbb61b18b8..e9d7f461b7fa 100644
+--- a/arch/x86/kernel/fpu/xstate.c
++++ b/arch/x86/kernel/fpu/xstate.c
+@@ -890,15 +890,6 @@ int arch_set_user_pkey_access(struct task_struct *tsk, int pkey,
+ 	 */
+ 	if (!boot_cpu_has(X86_FEATURE_OSPKE))
+ 		return -EINVAL;
+-	/*
+-	 * For most XSAVE components, this would be an arduous task:
+-	 * brining fpstate up to date with fpregs, updating fpstate,
+-	 * then re-populating fpregs.  But, for components that are
+-	 * never lazily managed, we can just access the fpregs
+-	 * directly.  PKRU is never managed lazily, so we can just
+-	 * manipulate it directly.  Make sure it stays that way.
+-	 */
+-	WARN_ON_ONCE(!use_eager_fpu());
+ 
+ 	/* Set the bits we need in PKRU:  */
+ 	if (init_val & PKEY_DISABLE_ACCESS)
+diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S
+index 9d72cf547c88..b0d6697ab153 100644
+--- a/arch/x86/kernel/head_64.S
++++ b/arch/x86/kernel/head_64.S
+@@ -23,6 +23,7 @@
+ #include "../entry/calling.h"
+ #include <asm/export.h>
+ #include <asm/nospec-branch.h>
++#include <asm/fixmap.h>
+ 
+ #ifdef CONFIG_PARAVIRT
+ #include <asm/asm-offsets.h>
+@@ -493,13 +494,20 @@ NEXT_PAGE(level2_kernel_pgt)
+ 		KERNEL_IMAGE_SIZE/PMD_SIZE)
+ 
+ NEXT_PAGE(level2_fixmap_pgt)
+-	.fill	506,8,0
+-	.quad	level1_fixmap_pgt - __START_KERNEL_map + _PAGE_TABLE
+-	/* 8MB reserved for vsyscalls + a 2MB hole = 4 + 1 entries */
+-	.fill	5,8,0
++	.fill	(512 - 4 - FIXMAP_PMD_NUM),8,0
++	pgtno = 0
++	.rept (FIXMAP_PMD_NUM)
++	.quad level1_fixmap_pgt + (pgtno << PAGE_SHIFT) - __START_KERNEL_map \
++		+ _PAGE_TABLE;
++	pgtno = pgtno + 1
++	.endr
++	/* 6 MB reserved space + a 2MB hole */
++	.fill	4,8,0
+ 
+ NEXT_PAGE(level1_fixmap_pgt)
++	.rept (FIXMAP_PMD_NUM)
+ 	.fill	512,8,0
++	.endr
+ 
+ #undef PMDS
+ 
+diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
+index 7e5119c1d15c..c17d3893ae60 100644
+--- a/arch/x86/kvm/cpuid.c
++++ b/arch/x86/kvm/cpuid.c
+@@ -16,7 +16,6 @@
+ #include <linux/export.h>
+ #include <linux/vmalloc.h>
+ #include <linux/uaccess.h>
+-#include <asm/fpu/internal.h> /* For use_eager_fpu.  Ugh! */
+ #include <asm/user.h>
+ #include <asm/fpu/xstate.h>
+ #include "cpuid.h"
+@@ -114,8 +113,7 @@ int kvm_update_cpuid(struct kvm_vcpu *vcpu)
+ 	if (best && (best->eax & (F(XSAVES) | F(XSAVEC))))
+ 		best->ebx = xstate_required_size(vcpu->arch.xcr0, true);
+ 
+-	if (use_eager_fpu())
+-		kvm_x86_ops->fpu_activate(vcpu);
++	kvm_x86_ops->fpu_activate(vcpu);
+ 
+ 	/*
+ 	 * The existing code assumes virtual address is 48-bit in the canonical
+diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
+index 203d42340fc1..5013ef165f44 100644
+--- a/arch/x86/kvm/x86.c
++++ b/arch/x86/kvm/x86.c
+@@ -7631,16 +7631,6 @@ void kvm_put_guest_fpu(struct kvm_vcpu *vcpu)
+ 	copy_fpregs_to_fpstate(&vcpu->arch.guest_fpu);
+ 	__kernel_fpu_end();
+ 	++vcpu->stat.fpu_reload;
+-	/*
+-	 * If using eager FPU mode, or if the guest is a frequent user
+-	 * of the FPU, just leave the FPU active for next time.
+-	 * Every 255 times fpu_counter rolls over to 0; a guest that uses
+-	 * the FPU in bursts will revert to loading it on demand.
+-	 */
+-	if (!use_eager_fpu()) {
+-		if (++vcpu->fpu_counter < 5)
+-			kvm_make_request(KVM_REQ_DEACTIVATE_FPU, vcpu);
+-	}
+ 	trace_kvm_fpu(0);
+ }
+ 
+diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c
+index e30baa8ad94f..8cbed30feb67 100644
+--- a/arch/x86/mm/pgtable.c
++++ b/arch/x86/mm/pgtable.c
+@@ -536,6 +536,15 @@ void __native_set_fixmap(enum fixed_addresses idx, pte_t pte)
+ {
+ 	unsigned long address = __fix_to_virt(idx);
+ 
++#ifdef CONFIG_X86_64
++       /*
++	* Ensure that the static initial page tables are covering the
++	* fixmap completely.
++	*/
++	BUILD_BUG_ON(__end_of_permanent_fixed_addresses >
++		     (FIXMAP_PMD_NUM * PTRS_PER_PTE));
++#endif
++
+ 	if (idx >= __end_of_fixed_addresses) {
+ 		BUG();
+ 		return;
+diff --git a/arch/x86/mm/pkeys.c b/arch/x86/mm/pkeys.c
+index 0bbec041c003..e2d2b3cd4276 100644
+--- a/arch/x86/mm/pkeys.c
++++ b/arch/x86/mm/pkeys.c
+@@ -142,8 +142,7 @@ u32 init_pkru_value = PKRU_AD_KEY( 1) | PKRU_AD_KEY( 2) | PKRU_AD_KEY( 3) |
+  * Called from the FPU code when creating a fresh set of FPU
+  * registers.  This is called from a very specific context where
+  * we know the FPU regstiers are safe for use and we can use PKRU
+- * directly.  The fact that PKRU is only available when we are
+- * using eagerfpu mode makes this possible.
++ * directly.
+  */
+ void copy_init_pkru_to_fpregs(void)
+ {
+diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
+index c92f75f7ae33..ebceaba20ad1 100644
+--- a/arch/x86/xen/mmu.c
++++ b/arch/x86/xen/mmu.c
+@@ -1936,7 +1936,7 @@ void __init xen_setup_kernel_pagetable(pgd_t *pgd, unsigned long max_pfn)
+ 		 * L3_k[511] -> level2_fixmap_pgt */
+ 		convert_pfn_mfn(level3_kernel_pgt);
+ 
+-		/* L3_k[511][506] -> level1_fixmap_pgt */
++		/* L3_k[511][508-FIXMAP_PMD_NUM ... 507] -> level1_fixmap_pgt */
+ 		convert_pfn_mfn(level2_fixmap_pgt);
+ 	}
+ 	/* We get [511][511] and have Xen's version of level2_kernel_pgt */
+@@ -1970,7 +1970,11 @@ void __init xen_setup_kernel_pagetable(pgd_t *pgd, unsigned long max_pfn)
+ 		set_page_prot(level2_ident_pgt, PAGE_KERNEL_RO);
+ 		set_page_prot(level2_kernel_pgt, PAGE_KERNEL_RO);
+ 		set_page_prot(level2_fixmap_pgt, PAGE_KERNEL_RO);
+-		set_page_prot(level1_fixmap_pgt, PAGE_KERNEL_RO);
++
++		for (i = 0; i < FIXMAP_PMD_NUM; i++) {
++			set_page_prot(level1_fixmap_pgt + i * PTRS_PER_PTE,
++				      PAGE_KERNEL_RO);
++		}
+ 
+ 		/* Pin down new L4 */
+ 		pin_pagetable_pfn(MMUEXT_PIN_L4_TABLE,
+diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
+index dfffba39f723..98517216879d 100644
+--- a/drivers/base/power/main.c
++++ b/drivers/base/power/main.c
+@@ -1360,8 +1360,10 @@ static int __device_suspend(struct device *dev, pm_message_t state, bool async)
+ 
+ 	dpm_wait_for_children(dev, async);
+ 
+-	if (async_error)
++	if (async_error) {
++		dev->power.direct_complete = false;
+ 		goto Complete;
++	}
+ 
+ 	/*
+ 	 * If a device configured to wake up the system from sleep states
+@@ -1373,6 +1375,7 @@ static int __device_suspend(struct device *dev, pm_message_t state, bool async)
+ 		pm_wakeup_event(dev, 0);
+ 
+ 	if (pm_wakeup_pending()) {
++		dev->power.direct_complete = false;
+ 		async_error = -EBUSY;
+ 		goto Complete;
+ 	}
+diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c
+index 0fd0d82f80d2..fa9ef8ed5712 100644
+--- a/drivers/infiniband/core/ucma.c
++++ b/drivers/infiniband/core/ucma.c
+@@ -1720,6 +1720,8 @@ static int ucma_close(struct inode *inode, struct file *filp)
+ 		mutex_lock(&mut);
+ 		if (!ctx->closing) {
+ 			mutex_unlock(&mut);
++			ucma_put_ctx(ctx);
++			wait_for_completion(&ctx->comp);
+ 			/* rdma_destroy_id ensures that no event handlers are
+ 			 * inflight for that id before releasing it.
+ 			 */
+diff --git a/drivers/md/dm-cache-metadata.c b/drivers/md/dm-cache-metadata.c
+index a184c9830ca5..62eb4b7caff3 100644
+--- a/drivers/md/dm-cache-metadata.c
++++ b/drivers/md/dm-cache-metadata.c
+@@ -1262,8 +1262,8 @@ static int __load_mappings(struct dm_cache_metadata *cmd,
+ 		if (hints_valid) {
+ 			r = dm_array_cursor_next(&cmd->hint_cursor);
+ 			if (r) {
+-				DMERR("dm_array_cursor_next for hint failed");
+-				goto out;
++				dm_array_cursor_end(&cmd->hint_cursor);
++				hints_valid = false;
+ 			}
+ 		}
+ 	}
+diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c
+index c817627d09ca..58b97226050f 100644
+--- a/drivers/md/dm-cache-target.c
++++ b/drivers/md/dm-cache-target.c
+@@ -3390,8 +3390,13 @@ static dm_cblock_t get_cache_dev_size(struct cache *cache)
+ 
+ static bool can_resize(struct cache *cache, dm_cblock_t new_size)
+ {
+-	if (from_cblock(new_size) > from_cblock(cache->cache_size))
+-		return true;
++	if (from_cblock(new_size) > from_cblock(cache->cache_size)) {
++		if (cache->sized) {
++			DMERR("%s: unable to extend cache due to missing cache table reload",
++			      cache_device_name(cache));
++			return false;
++		}
++	}
+ 
+ 	/*
+ 	 * We can't drop a dirty block when shrinking the cache.
+diff --git a/drivers/net/wireless/ath/ath10k/debug.c b/drivers/net/wireless/ath/ath10k/debug.c
+index 0dadc6044dba..b106a06d21cb 100644
+--- a/drivers/net/wireless/ath/ath10k/debug.c
++++ b/drivers/net/wireless/ath/ath10k/debug.c
+@@ -1,6 +1,7 @@
+ /*
+  * Copyright (c) 2005-2011 Atheros Communications Inc.
+  * Copyright (c) 2011-2013 Qualcomm Atheros, Inc.
++ * Copyright (c) 2018, The Linux Foundation. All rights reserved.
+  *
+  * Permission to use, copy, modify, and/or distribute this software for any
+  * purpose with or without fee is hereby granted, provided that the above
+@@ -161,6 +162,8 @@ void ath10k_debug_print_hwfw_info(struct ath10k *ar)
+ void ath10k_debug_print_board_info(struct ath10k *ar)
+ {
+ 	char boardinfo[100];
++	const struct firmware *board;
++	u32 crc;
+ 
+ 	if (ar->id.bmi_ids_valid)
+ 		scnprintf(boardinfo, sizeof(boardinfo), "%d:%d",
+@@ -168,11 +171,16 @@ void ath10k_debug_print_board_info(struct ath10k *ar)
+ 	else
+ 		scnprintf(boardinfo, sizeof(boardinfo), "N/A");
+ 
++	board = ar->normal_mode_fw.board;
++	if (!IS_ERR_OR_NULL(board))
++		crc = crc32_le(0, board->data, board->size);
++	else
++		crc = 0;
++
+ 	ath10k_info(ar, "board_file api %d bmi_id %s crc32 %08x",
+ 		    ar->bd_api,
+ 		    boardinfo,
+-		    crc32_le(0, ar->normal_mode_fw.board->data,
+-			     ar->normal_mode_fw.board->size));
++		    crc);
+ }
+ 
+ void ath10k_debug_print_boot_info(struct ath10k *ar)
+diff --git a/drivers/net/wireless/ath/ath10k/trace.h b/drivers/net/wireless/ath/ath10k/trace.h
+index e0d00cef0bd8..5b974bb76e6c 100644
+--- a/drivers/net/wireless/ath/ath10k/trace.h
++++ b/drivers/net/wireless/ath/ath10k/trace.h
+@@ -152,10 +152,9 @@ TRACE_EVENT(ath10k_log_dbg_dump,
+ );
+ 
+ TRACE_EVENT(ath10k_wmi_cmd,
+-	TP_PROTO(struct ath10k *ar, int id, const void *buf, size_t buf_len,
+-		 int ret),
++	TP_PROTO(struct ath10k *ar, int id, const void *buf, size_t buf_len),
+ 
+-	TP_ARGS(ar, id, buf, buf_len, ret),
++	TP_ARGS(ar, id, buf, buf_len),
+ 
+ 	TP_STRUCT__entry(
+ 		__string(device, dev_name(ar->dev))
+@@ -163,7 +162,6 @@ TRACE_EVENT(ath10k_wmi_cmd,
+ 		__field(unsigned int, id)
+ 		__field(size_t, buf_len)
+ 		__dynamic_array(u8, buf, buf_len)
+-		__field(int, ret)
+ 	),
+ 
+ 	TP_fast_assign(
+@@ -171,17 +169,15 @@ TRACE_EVENT(ath10k_wmi_cmd,
+ 		__assign_str(driver, dev_driver_string(ar->dev));
+ 		__entry->id = id;
+ 		__entry->buf_len = buf_len;
+-		__entry->ret = ret;
+ 		memcpy(__get_dynamic_array(buf), buf, buf_len);
+ 	),
+ 
+ 	TP_printk(
+-		"%s %s id %d len %zu ret %d",
++		"%s %s id %d len %zu",
+ 		__get_str(driver),
+ 		__get_str(device),
+ 		__entry->id,
+-		__entry->buf_len,
+-		__entry->ret
++		__entry->buf_len
+ 	)
+ );
+ 
+diff --git a/drivers/net/wireless/ath/ath10k/wmi-tlv.c b/drivers/net/wireless/ath/ath10k/wmi-tlv.c
+index f69b98f4276b..642a441a6586 100644
+--- a/drivers/net/wireless/ath/ath10k/wmi-tlv.c
++++ b/drivers/net/wireless/ath/ath10k/wmi-tlv.c
+@@ -1486,10 +1486,10 @@ ath10k_wmi_tlv_op_gen_start_scan(struct ath10k *ar,
+ 	bssid_len = arg->n_bssids * sizeof(struct wmi_mac_addr);
+ 	ie_len = roundup(arg->ie_len, 4);
+ 	len = (sizeof(*tlv) + sizeof(*cmd)) +
+-	      (arg->n_channels ? sizeof(*tlv) + chan_len : 0) +
+-	      (arg->n_ssids ? sizeof(*tlv) + ssid_len : 0) +
+-	      (arg->n_bssids ? sizeof(*tlv) + bssid_len : 0) +
+-	      (arg->ie_len ? sizeof(*tlv) + ie_len : 0);
++	      sizeof(*tlv) + chan_len +
++	      sizeof(*tlv) + ssid_len +
++	      sizeof(*tlv) + bssid_len +
++	      sizeof(*tlv) + ie_len;
+ 
+ 	skb = ath10k_wmi_alloc_skb(ar, len);
+ 	if (!skb)
+diff --git a/drivers/net/wireless/ath/ath10k/wmi.c b/drivers/net/wireless/ath/ath10k/wmi.c
+index e518b640aad0..75f7a7b549df 100644
+--- a/drivers/net/wireless/ath/ath10k/wmi.c
++++ b/drivers/net/wireless/ath/ath10k/wmi.c
+@@ -1711,8 +1711,8 @@ int ath10k_wmi_cmd_send_nowait(struct ath10k *ar, struct sk_buff *skb,
+ 	cmd_hdr->cmd_id = __cpu_to_le32(cmd);
+ 
+ 	memset(skb_cb, 0, sizeof(*skb_cb));
++	trace_ath10k_wmi_cmd(ar, cmd_id, skb->data, skb->len);
+ 	ret = ath10k_htc_send(&ar->htc, ar->wmi.eid, skb);
+-	trace_ath10k_wmi_cmd(ar, cmd_id, skb->data, skb->len, ret);
+ 
+ 	if (ret)
+ 		goto err_pull;
+diff --git a/drivers/net/xen-netback/hash.c b/drivers/net/xen-netback/hash.c
+index 3c4c58b9fe76..3b6fb5b3bdb2 100644
+--- a/drivers/net/xen-netback/hash.c
++++ b/drivers/net/xen-netback/hash.c
+@@ -332,20 +332,22 @@ u32 xenvif_set_hash_mapping_size(struct xenvif *vif, u32 size)
+ u32 xenvif_set_hash_mapping(struct xenvif *vif, u32 gref, u32 len,
+ 			    u32 off)
+ {
+-	u32 *mapping = &vif->hash.mapping[off];
++	u32 *mapping = vif->hash.mapping;
+ 	struct gnttab_copy copy_op = {
+ 		.source.u.ref = gref,
+ 		.source.domid = vif->domid,
+-		.dest.u.gmfn = virt_to_gfn(mapping),
+ 		.dest.domid = DOMID_SELF,
+-		.dest.offset = xen_offset_in_page(mapping),
+-		.len = len * sizeof(u32),
++		.len = len * sizeof(*mapping),
+ 		.flags = GNTCOPY_source_gref
+ 	};
+ 
+-	if ((off + len > vif->hash.size) || copy_op.len > XEN_PAGE_SIZE)
++	if ((off + len < off) || (off + len > vif->hash.size) ||
++	    len > XEN_PAGE_SIZE / sizeof(*mapping))
+ 		return XEN_NETIF_CTRL_STATUS_INVALID_PARAMETER;
+ 
++	copy_op.dest.u.gmfn = virt_to_gfn(mapping + off);
++	copy_op.dest.offset = xen_offset_in_page(mapping + off);
++
+ 	while (len-- != 0)
+ 		if (mapping[off++] >= vif->num_queues)
+ 			return XEN_NETIF_CTRL_STATUS_INVALID_PARAMETER;
+diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c
+index 90b5a898d6b1..0a1ebbbd3f16 100644
+--- a/drivers/of/unittest.c
++++ b/drivers/of/unittest.c
+@@ -548,6 +548,9 @@ static void __init of_unittest_parse_interrupts(void)
+ 	struct of_phandle_args args;
+ 	int i, rc;
+ 
++	if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)
++		return;
++
+ 	np = of_find_node_by_path("/testcase-data/interrupts/interrupts0");
+ 	if (!np) {
+ 		pr_err("missing testcase data\n");
+@@ -622,6 +625,9 @@ static void __init of_unittest_parse_interrupts_extended(void)
+ 	struct of_phandle_args args;
+ 	int i, rc;
+ 
++	if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)
++		return;
++
+ 	np = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0");
+ 	if (!np) {
+ 		pr_err("missing testcase data\n");
+@@ -778,15 +784,19 @@ static void __init of_unittest_platform_populate(void)
+ 	pdev = of_find_device_by_node(np);
+ 	unittest(pdev, "device 1 creation failed\n");
+ 
+-	irq = platform_get_irq(pdev, 0);
+-	unittest(irq == -EPROBE_DEFER, "device deferred probe failed - %d\n", irq);
+-
+-	/* Test that a parsing failure does not return -EPROBE_DEFER */
+-	np = of_find_node_by_path("/testcase-data/testcase-device2");
+-	pdev = of_find_device_by_node(np);
+-	unittest(pdev, "device 2 creation failed\n");
+-	irq = platform_get_irq(pdev, 0);
+-	unittest(irq < 0 && irq != -EPROBE_DEFER, "device parsing error failed - %d\n", irq);
++	if (!(of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)) {
++		irq = platform_get_irq(pdev, 0);
++		unittest(irq == -EPROBE_DEFER,
++			 "device deferred probe failed - %d\n", irq);
++
++		/* Test that a parsing failure does not return -EPROBE_DEFER */
++		np = of_find_node_by_path("/testcase-data/testcase-device2");
++		pdev = of_find_device_by_node(np);
++		unittest(pdev, "device 2 creation failed\n");
++		irq = platform_get_irq(pdev, 0);
++		unittest(irq < 0 && irq != -EPROBE_DEFER,
++			 "device parsing error failed - %d\n", irq);
++	}
+ 
+ 	np = of_find_node_by_path("/testcase-data/platform-tests");
+ 	unittest(np, "No testcase data in device tree\n");
+diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
+index 6b3c5c4cbb37..ccbbd4cde0f1 100644
+--- a/drivers/pci/pci.c
++++ b/drivers/pci/pci.c
+@@ -1114,12 +1114,12 @@ int pci_save_state(struct pci_dev *dev)
+ EXPORT_SYMBOL(pci_save_state);
+ 
+ static void pci_restore_config_dword(struct pci_dev *pdev, int offset,
+-				     u32 saved_val, int retry)
++				     u32 saved_val, int retry, bool force)
+ {
+ 	u32 val;
+ 
+ 	pci_read_config_dword(pdev, offset, &val);
+-	if (val == saved_val)
++	if (!force && val == saved_val)
+ 		return;
+ 
+ 	for (;;) {
+@@ -1138,25 +1138,36 @@ static void pci_restore_config_dword(struct pci_dev *pdev, int offset,
+ }
+ 
+ static void pci_restore_config_space_range(struct pci_dev *pdev,
+-					   int start, int end, int retry)
++					   int start, int end, int retry,
++					   bool force)
+ {
+ 	int index;
+ 
+ 	for (index = end; index >= start; index--)
+ 		pci_restore_config_dword(pdev, 4 * index,
+ 					 pdev->saved_config_space[index],
+-					 retry);
++					 retry, force);
+ }
+ 
+ static void pci_restore_config_space(struct pci_dev *pdev)
+ {
+ 	if (pdev->hdr_type == PCI_HEADER_TYPE_NORMAL) {
+-		pci_restore_config_space_range(pdev, 10, 15, 0);
++		pci_restore_config_space_range(pdev, 10, 15, 0, false);
+ 		/* Restore BARs before the command register. */
+-		pci_restore_config_space_range(pdev, 4, 9, 10);
+-		pci_restore_config_space_range(pdev, 0, 3, 0);
++		pci_restore_config_space_range(pdev, 4, 9, 10, false);
++		pci_restore_config_space_range(pdev, 0, 3, 0, false);
++	} else if (pdev->hdr_type == PCI_HEADER_TYPE_BRIDGE) {
++		pci_restore_config_space_range(pdev, 12, 15, 0, false);
++
++		/*
++		 * Force rewriting of prefetch registers to avoid S3 resume
++		 * issues on Intel PCI bridges that occur when these
++		 * registers are not explicitly written.
++		 */
++		pci_restore_config_space_range(pdev, 9, 11, 0, true);
++		pci_restore_config_space_range(pdev, 0, 8, 0, false);
+ 	} else {
+-		pci_restore_config_space_range(pdev, 0, 15, 0);
++		pci_restore_config_space_range(pdev, 0, 15, 0, false);
+ 	}
+ }
+ 
+diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
+index 789c81482542..e6429d419b80 100644
+--- a/drivers/tty/tty_io.c
++++ b/drivers/tty/tty_io.c
+@@ -1475,6 +1475,7 @@ static void tty_driver_remove_tty(struct tty_driver *driver, struct tty_struct *
+ static int tty_reopen(struct tty_struct *tty)
+ {
+ 	struct tty_driver *driver = tty->driver;
++	int retval;
+ 
+ 	if (driver->type == TTY_DRIVER_TYPE_PTY &&
+ 	    driver->subtype == PTY_TYPE_MASTER)
+@@ -1488,10 +1489,14 @@ static int tty_reopen(struct tty_struct *tty)
+ 
+ 	tty->count++;
+ 
+-	if (!tty->ldisc)
+-		return tty_ldisc_reinit(tty, tty->termios.c_line);
++	if (tty->ldisc)
++		return 0;
+ 
+-	return 0;
++	retval = tty_ldisc_reinit(tty, tty->termios.c_line);
++	if (retval)
++		tty->count--;
++
++	return retval;
+ }
+ 
+ /**
+diff --git a/drivers/usb/host/xhci-mtk.c b/drivers/usb/host/xhci-mtk.c
+index ce9e457e60c3..c10875834a5a 100644
+--- a/drivers/usb/host/xhci-mtk.c
++++ b/drivers/usb/host/xhci-mtk.c
+@@ -735,10 +735,10 @@ static int __maybe_unused xhci_mtk_resume(struct device *dev)
+ 	xhci_mtk_host_enable(mtk);
+ 
+ 	xhci_dbg(xhci, "%s: restart port polling\n", __func__);
+-	set_bit(HCD_FLAG_POLL_RH, &hcd->flags);
+-	usb_hcd_poll_rh_status(hcd);
+ 	set_bit(HCD_FLAG_POLL_RH, &xhci->shared_hcd->flags);
+ 	usb_hcd_poll_rh_status(xhci->shared_hcd);
++	set_bit(HCD_FLAG_POLL_RH, &hcd->flags);
++	usb_hcd_poll_rh_status(hcd);
+ 	return 0;
+ }
+ 
+diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
+index f6782a347cde..b5140555a8d5 100644
+--- a/drivers/usb/host/xhci-pci.c
++++ b/drivers/usb/host/xhci-pci.c
+@@ -179,6 +179,8 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
+ 	}
+ 	if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
+ 	    (pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI ||
++	     pdev->device == PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_XHCI ||
++	     pdev->device == PCI_DEVICE_ID_INTEL_SUNRISEPOINT_H_XHCI ||
+ 	     pdev->device == PCI_DEVICE_ID_INTEL_APL_XHCI ||
+ 	     pdev->device == PCI_DEVICE_ID_INTEL_DNV_XHCI))
+ 		xhci->quirks |= XHCI_MISSING_CAS;
+diff --git a/drivers/usb/serial/usb-serial-simple.c b/drivers/usb/serial/usb-serial-simple.c
+index 2674da40d9cd..6d6acf2c07c3 100644
+--- a/drivers/usb/serial/usb-serial-simple.c
++++ b/drivers/usb/serial/usb-serial-simple.c
+@@ -87,7 +87,8 @@ DEVICE(moto_modem, MOTO_IDS);
+ 
+ /* Motorola Tetra driver */
+ #define MOTOROLA_TETRA_IDS()			\
+-	{ USB_DEVICE(0x0cad, 0x9011) }	/* Motorola Solutions TETRA PEI */
++	{ USB_DEVICE(0x0cad, 0x9011) },	/* Motorola Solutions TETRA PEI */ \
++	{ USB_DEVICE(0x0cad, 0x9012) }	/* MTP6550 */
+ DEVICE(motorola_tetra, MOTOROLA_TETRA_IDS);
+ 
+ /* Novatel Wireless GPS driver */
+diff --git a/drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c b/drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c
+index ef69273074ba..a3edb20ea4c3 100644
+--- a/drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c
++++ b/drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c
+@@ -496,6 +496,9 @@ static int omapfb_memory_read(struct fb_info *fbi,
+ 	if (!access_ok(VERIFY_WRITE, mr->buffer, mr->buffer_size))
+ 		return -EFAULT;
+ 
++	if (mr->w > 4096 || mr->h > 4096)
++		return -EINVAL;
++
+ 	if (mr->w * mr->h * 3 > mr->buffer_size)
+ 		return -EINVAL;
+ 
+@@ -509,7 +512,7 @@ static int omapfb_memory_read(struct fb_info *fbi,
+ 			mr->x, mr->y, mr->w, mr->h);
+ 
+ 	if (r > 0) {
+-		if (copy_to_user(mr->buffer, buf, mr->buffer_size))
++		if (copy_to_user(mr->buffer, buf, r))
+ 			r = -EFAULT;
+ 	}
+ 
+diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
+index c19c96840480..c10180d0b018 100644
+--- a/fs/ext4/xattr.c
++++ b/fs/ext4/xattr.c
+@@ -209,12 +209,12 @@ ext4_xattr_check_block(struct inode *inode, struct buffer_head *bh)
+ {
+ 	int error;
+ 
+-	if (buffer_verified(bh))
+-		return 0;
+-
+ 	if (BHDR(bh)->h_magic != cpu_to_le32(EXT4_XATTR_MAGIC) ||
+ 	    BHDR(bh)->h_blocks != cpu_to_le32(1))
+ 		return -EFSCORRUPTED;
++	if (buffer_verified(bh))
++		return 0;
++
+ 	if (!ext4_xattr_block_csum_verify(inode, bh))
+ 		return -EFSBADCRC;
+ 	error = ext4_xattr_check_names(BFIRST(bh), bh->b_data + bh->b_size,
+@@ -645,14 +645,20 @@ static size_t ext4_xattr_free_space(struct ext4_xattr_entry *last,
+ }
+ 
+ static int
+-ext4_xattr_set_entry(struct ext4_xattr_info *i, struct ext4_xattr_search *s)
++ext4_xattr_set_entry(struct ext4_xattr_info *i, struct ext4_xattr_search *s,
++		     struct inode *inode)
+ {
+-	struct ext4_xattr_entry *last;
++	struct ext4_xattr_entry *last, *next;
+ 	size_t free, min_offs = s->end - s->base, name_len = strlen(i->name);
+ 
+ 	/* Compute min_offs and last. */
+ 	last = s->first;
+-	for (; !IS_LAST_ENTRY(last); last = EXT4_XATTR_NEXT(last)) {
++	for (; !IS_LAST_ENTRY(last); last = next) {
++		next = EXT4_XATTR_NEXT(last);
++		if ((void *)next >= s->end) {
++			EXT4_ERROR_INODE(inode, "corrupted xattr entries");
++			return -EIO;
++		}
+ 		if (last->e_value_size) {
+ 			size_t offs = le16_to_cpu(last->e_value_offs);
+ 			if (offs < min_offs)
+@@ -834,7 +840,7 @@ ext4_xattr_block_set(handle_t *handle, struct inode *inode,
+ 			mb_cache_entry_delete_block(ext4_mb_cache, hash,
+ 						    bs->bh->b_blocknr);
+ 			ea_bdebug(bs->bh, "modifying in-place");
+-			error = ext4_xattr_set_entry(i, s);
++			error = ext4_xattr_set_entry(i, s, inode);
+ 			if (!error) {
+ 				if (!IS_LAST_ENTRY(s->first))
+ 					ext4_xattr_rehash(header(s->base),
+@@ -881,7 +887,7 @@ ext4_xattr_block_set(handle_t *handle, struct inode *inode,
+ 		s->end = s->base + sb->s_blocksize;
+ 	}
+ 
+-	error = ext4_xattr_set_entry(i, s);
++	error = ext4_xattr_set_entry(i, s, inode);
+ 	if (error == -EFSCORRUPTED)
+ 		goto bad_block;
+ 	if (error)
+@@ -1079,7 +1085,7 @@ int ext4_xattr_ibody_inline_set(handle_t *handle, struct inode *inode,
+ 
+ 	if (EXT4_I(inode)->i_extra_isize == 0)
+ 		return -ENOSPC;
+-	error = ext4_xattr_set_entry(i, s);
++	error = ext4_xattr_set_entry(i, s, inode);
+ 	if (error) {
+ 		if (error == -ENOSPC &&
+ 		    ext4_has_inline_data(inode)) {
+@@ -1091,7 +1097,7 @@ int ext4_xattr_ibody_inline_set(handle_t *handle, struct inode *inode,
+ 			error = ext4_xattr_ibody_find(inode, i, is);
+ 			if (error)
+ 				return error;
+-			error = ext4_xattr_set_entry(i, s);
++			error = ext4_xattr_set_entry(i, s, inode);
+ 		}
+ 		if (error)
+ 			return error;
+@@ -1117,7 +1123,7 @@ static int ext4_xattr_ibody_set(handle_t *handle, struct inode *inode,
+ 
+ 	if (EXT4_I(inode)->i_extra_isize == 0)
+ 		return -ENOSPC;
+-	error = ext4_xattr_set_entry(i, s);
++	error = ext4_xattr_set_entry(i, s, inode);
+ 	if (error)
+ 		return error;
+ 	header = IHDR(inode, ext4_raw_inode(&is->iloc));
+diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
+index b4dbc2f59656..aee2a066a446 100644
+--- a/fs/f2fs/checkpoint.c
++++ b/fs/f2fs/checkpoint.c
+@@ -676,6 +676,7 @@ static int get_checkpoint_version(struct f2fs_sb_info *sbi, block_t cp_addr,
+ 
+ 	crc_offset = le32_to_cpu((*cp_block)->checksum_offset);
+ 	if (crc_offset >= blk_size) {
++		f2fs_put_page(*cp_page, 1);
+ 		f2fs_msg(sbi->sb, KERN_WARNING,
+ 			"invalid crc_offset: %zu", crc_offset);
+ 		return -EINVAL;
+@@ -684,6 +685,7 @@ static int get_checkpoint_version(struct f2fs_sb_info *sbi, block_t cp_addr,
+ 	crc = le32_to_cpu(*((__le32 *)((unsigned char *)*cp_block
+ 							+ crc_offset)));
+ 	if (!f2fs_crc_valid(sbi, crc, *cp_block, crc_offset)) {
++		f2fs_put_page(*cp_page, 1);
+ 		f2fs_msg(sbi->sb, KERN_WARNING, "invalid crc value");
+ 		return -EINVAL;
+ 	}
+@@ -703,14 +705,14 @@ static struct page *validate_checkpoint(struct f2fs_sb_info *sbi,
+ 	err = get_checkpoint_version(sbi, cp_addr, &cp_block,
+ 					&cp_page_1, version);
+ 	if (err)
+-		goto invalid_cp1;
++		return NULL;
+ 	pre_version = *version;
+ 
+ 	cp_addr += le32_to_cpu(cp_block->cp_pack_total_block_count) - 1;
+ 	err = get_checkpoint_version(sbi, cp_addr, &cp_block,
+ 					&cp_page_2, version);
+ 	if (err)
+-		goto invalid_cp2;
++		goto invalid_cp;
+ 	cur_version = *version;
+ 
+ 	if (cur_version == pre_version) {
+@@ -718,9 +720,8 @@ static struct page *validate_checkpoint(struct f2fs_sb_info *sbi,
+ 		f2fs_put_page(cp_page_2, 1);
+ 		return cp_page_1;
+ 	}
+-invalid_cp2:
+ 	f2fs_put_page(cp_page_2, 1);
+-invalid_cp1:
++invalid_cp:
+ 	f2fs_put_page(cp_page_1, 1);
+ 	return NULL;
+ }
+diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
+index 03dda1cbe485..727a9e3fa806 100644
+--- a/fs/ubifs/super.c
++++ b/fs/ubifs/super.c
+@@ -1918,6 +1918,9 @@ static struct ubi_volume_desc *open_ubi(const char *name, int mode)
+ 	int dev, vol;
+ 	char *endptr;
+ 
++	if (!name || !*name)
++		return ERR_PTR(-EINVAL);
++
+ 	/* First, try to open using the device node path method */
+ 	ubi = ubi_open_volume_path(name, mode);
+ 	if (!IS_ERR(ubi))
+diff --git a/include/linux/netfilter_bridge/ebtables.h b/include/linux/netfilter_bridge/ebtables.h
+index 984b2112c77b..ea8a97793d2d 100644
+--- a/include/linux/netfilter_bridge/ebtables.h
++++ b/include/linux/netfilter_bridge/ebtables.h
+@@ -123,4 +123,9 @@ extern unsigned int ebt_do_table(struct sk_buff *skb,
+ /* True if the target is not a standard target */
+ #define INVALID_TARGET (info->target < -NUM_STANDARD_TARGETS || info->target >= 0)
+ 
++static inline bool ebt_invalid_target(int target)
++{
++	return (target < -NUM_STANDARD_TARGETS || target >= 0);
++}
++
+ #endif
+diff --git a/kernel/cgroup.c b/kernel/cgroup.c
+index 4c233437ee1a..bb0cf1caf1cd 100644
+--- a/kernel/cgroup.c
++++ b/kernel/cgroup.c
+@@ -4386,7 +4386,11 @@ int cgroup_transfer_tasks(struct cgroup *to, struct cgroup *from)
+ 	 */
+ 	do {
+ 		css_task_iter_start(&from->self, &it);
+-		task = css_task_iter_next(&it);
++
++		do {
++			task = css_task_iter_next(&it);
++		} while (task && (task->flags & PF_EXITING));
++
+ 		if (task)
+ 			get_task_struct(task);
+ 		css_task_iter_end(&it);
+diff --git a/mm/vmstat.c b/mm/vmstat.c
+index 5f658b6a684f..d31e801a467c 100644
+--- a/mm/vmstat.c
++++ b/mm/vmstat.c
+@@ -1078,6 +1078,9 @@ const char * const vmstat_text[] = {
+ #ifdef CONFIG_SMP
+ 	"nr_tlb_remote_flush",
+ 	"nr_tlb_remote_flush_received",
++#else
++	"", /* nr_tlb_remote_flush */
++	"", /* nr_tlb_remote_flush_received */
+ #endif /* CONFIG_SMP */
+ 	"nr_tlb_local_flush_all",
+ 	"nr_tlb_local_flush_one",
+diff --git a/net/bridge/netfilter/ebt_arpreply.c b/net/bridge/netfilter/ebt_arpreply.c
+index 070cf134a22f..f2660c1b29e4 100644
+--- a/net/bridge/netfilter/ebt_arpreply.c
++++ b/net/bridge/netfilter/ebt_arpreply.c
+@@ -67,6 +67,9 @@ static int ebt_arpreply_tg_check(const struct xt_tgchk_param *par)
+ 	if (e->ethproto != htons(ETH_P_ARP) ||
+ 	    e->invflags & EBT_IPROTO)
+ 		return -EINVAL;
++	if (ebt_invalid_target(info->target))
++		return -EINVAL;
++
+ 	return 0;
+ }
+ 
+diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
+index e63fd12f923a..6ef9d32c34f1 100644
+--- a/net/mac80211/cfg.c
++++ b/net/mac80211/cfg.c
+@@ -386,7 +386,7 @@ static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
+ 	case NL80211_IFTYPE_AP:
+ 	case NL80211_IFTYPE_AP_VLAN:
+ 		/* Keys without a station are used for TX only */
+-		if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
++		if (sta && test_sta_flag(sta, WLAN_STA_MFP))
+ 			key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
+ 		break;
+ 	case NL80211_IFTYPE_ADHOC:
+diff --git a/tools/arch/x86/include/asm/cpufeatures.h b/tools/arch/x86/include/asm/cpufeatures.h
+index fbc1474960e3..f6d1bc93589c 100644
+--- a/tools/arch/x86/include/asm/cpufeatures.h
++++ b/tools/arch/x86/include/asm/cpufeatures.h
+@@ -104,7 +104,6 @@
+ #define X86_FEATURE_EXTD_APICID	( 3*32+26) /* has extended APICID (8 bits) */
+ #define X86_FEATURE_AMD_DCM     ( 3*32+27) /* multi-node processor */
+ #define X86_FEATURE_APERFMPERF	( 3*32+28) /* APERFMPERF */
+-/* free, was #define X86_FEATURE_EAGER_FPU	( 3*32+29) * "eagerfpu" Non lazy FPU restore */
+ #define X86_FEATURE_NONSTOP_TSC_S3 ( 3*32+30) /* TSC doesn't stop in S3 state */
+ 
+ /* Intel-defined CPU features, CPUID level 0x00000001 (ecx), word 4 */