[gentoo-commits] proj/linux-patches:4.14 commit in: /

[Mike Pagano]

commit:     e8f7b595d24caaeec8ddbb979a63ef70832c51dc
Author:     Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Wed Sep  5 15:28:34 2018 +0000
Commit:     Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Wed Nov 14 14:00:41 2018 +0000
URL:        https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=e8f7b595

Linux patch 4.14.68

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

 0000_README              |    4 +
 1067_linux-4.14.68.patch | 5725 ++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 5729 insertions(+)

diff --git a/0000_README b/0000_README
index de230d4..4fd9ed9 100644
--- a/0000_README
+++ b/0000_README
@@ -311,6 +311,10 @@ Patch:  1066_linux-4.14.67.patch
 From:   http://www.kernel.org
 Desc:   Linux 4.14.67
 
+Patch:  1067_linux-4.14.68.patch
+From:   http://www.kernel.org
+Desc:   Linux 4.14.68
+
 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/1067_linux-4.14.68.patch b/1067_linux-4.14.68.patch
new file mode 100644
index 0000000..4089fa8
--- /dev/null
+++ b/1067_linux-4.14.68.patch
@@ -0,0 +1,5725 @@
+diff --git a/Makefile b/Makefile
+index 4dad2d1c24ba..3da579058926 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,7 +1,7 @@
+ # SPDX-License-Identifier: GPL-2.0
+ VERSION = 4
+ PATCHLEVEL = 14
+-SUBLEVEL = 67
++SUBLEVEL = 68
+ EXTRAVERSION =
+ NAME = Petit Gorille
+ 
+@@ -490,9 +490,13 @@ KBUILD_AFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC)
+ endif
+ 
+ RETPOLINE_CFLAGS_GCC := -mindirect-branch=thunk-extern -mindirect-branch-register
++RETPOLINE_VDSO_CFLAGS_GCC := -mindirect-branch=thunk-inline -mindirect-branch-register
+ RETPOLINE_CFLAGS_CLANG := -mretpoline-external-thunk
++RETPOLINE_VDSO_CFLAGS_CLANG := -mretpoline
+ RETPOLINE_CFLAGS := $(call cc-option,$(RETPOLINE_CFLAGS_GCC),$(call cc-option,$(RETPOLINE_CFLAGS_CLANG)))
++RETPOLINE_VDSO_CFLAGS := $(call cc-option,$(RETPOLINE_VDSO_CFLAGS_GCC),$(call cc-option,$(RETPOLINE_VDSO_CFLAGS_CLANG)))
+ export RETPOLINE_CFLAGS
++export RETPOLINE_VDSO_CFLAGS
+ 
+ ifeq ($(config-targets),1)
+ # ===========================================================================
+diff --git a/arch/Kconfig b/arch/Kconfig
+index 4e01862f58e4..40dc31fea90c 100644
+--- a/arch/Kconfig
++++ b/arch/Kconfig
+@@ -336,6 +336,9 @@ config HAVE_ARCH_JUMP_LABEL
+ config HAVE_RCU_TABLE_FREE
+ 	bool
+ 
++config HAVE_RCU_TABLE_INVALIDATE
++	bool
++
+ config ARCH_HAVE_NMI_SAFE_CMPXCHG
+ 	bool
+ 
+diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
+index 5c8caf85c350..8ff066090680 100644
+--- a/arch/arc/Kconfig
++++ b/arch/arc/Kconfig
+@@ -45,6 +45,9 @@ config ARC
+ 	select HAVE_KERNEL_GZIP
+ 	select HAVE_KERNEL_LZMA
+ 
++config ARCH_HAS_CACHE_LINE_SIZE
++	def_bool y
++
+ config MIGHT_HAVE_PCI
+ 	bool
+ 
+diff --git a/arch/arc/include/asm/cache.h b/arch/arc/include/asm/cache.h
+index 8486f328cc5d..ff7d3232764a 100644
+--- a/arch/arc/include/asm/cache.h
++++ b/arch/arc/include/asm/cache.h
+@@ -48,7 +48,9 @@
+ })
+ 
+ /* Largest line length for either L1 or L2 is 128 bytes */
+-#define ARCH_DMA_MINALIGN      128
++#define SMP_CACHE_BYTES		128
++#define cache_line_size()	SMP_CACHE_BYTES
++#define ARCH_DMA_MINALIGN	SMP_CACHE_BYTES
+ 
+ extern void arc_cache_init(void);
+ extern char *arc_cache_mumbojumbo(int cpu_id, char *buf, int len);
+diff --git a/arch/arc/include/asm/delay.h b/arch/arc/include/asm/delay.h
+index d5da2115d78a..03d6bb0f4e13 100644
+--- a/arch/arc/include/asm/delay.h
++++ b/arch/arc/include/asm/delay.h
+@@ -17,8 +17,11 @@
+ #ifndef __ASM_ARC_UDELAY_H
+ #define __ASM_ARC_UDELAY_H
+ 
++#include <asm-generic/types.h>
+ #include <asm/param.h>		/* HZ */
+ 
++extern unsigned long loops_per_jiffy;
++
+ static inline void __delay(unsigned long loops)
+ {
+ 	__asm__ __volatile__(
+diff --git a/arch/arc/mm/cache.c b/arch/arc/mm/cache.c
+index eee924dfffa6..d14499500106 100644
+--- a/arch/arc/mm/cache.c
++++ b/arch/arc/mm/cache.c
+@@ -1035,7 +1035,7 @@ void flush_cache_mm(struct mm_struct *mm)
+ void flush_cache_page(struct vm_area_struct *vma, unsigned long u_vaddr,
+ 		      unsigned long pfn)
+ {
+-	unsigned int paddr = pfn << PAGE_SHIFT;
++	phys_addr_t paddr = pfn << PAGE_SHIFT;
+ 
+ 	u_vaddr &= PAGE_MASK;
+ 
+@@ -1055,8 +1055,9 @@ void flush_anon_page(struct vm_area_struct *vma, struct page *page,
+ 		     unsigned long u_vaddr)
+ {
+ 	/* TBD: do we really need to clear the kernel mapping */
+-	__flush_dcache_page(page_address(page), u_vaddr);
+-	__flush_dcache_page(page_address(page), page_address(page));
++	__flush_dcache_page((phys_addr_t)page_address(page), u_vaddr);
++	__flush_dcache_page((phys_addr_t)page_address(page),
++			    (phys_addr_t)page_address(page));
+ 
+ }
+ 
+diff --git a/arch/arc/plat-eznps/include/plat/ctop.h b/arch/arc/plat-eznps/include/plat/ctop.h
+index 0c7d11022d0f..4f6a1673b3a6 100644
+--- a/arch/arc/plat-eznps/include/plat/ctop.h
++++ b/arch/arc/plat-eznps/include/plat/ctop.h
+@@ -21,6 +21,7 @@
+ #error "Incorrect ctop.h include"
+ #endif
+ 
++#include <linux/types.h>
+ #include <soc/nps/common.h>
+ 
+ /* core auxiliary registers */
+@@ -143,6 +144,15 @@ struct nps_host_reg_gim_p_int_dst {
+ };
+ 
+ /* AUX registers definition */
++struct nps_host_reg_aux_dpc {
++	union {
++		struct {
++			u32 ien:1, men:1, hen:1, reserved:29;
++		};
++		u32 value;
++	};
++};
++
+ struct nps_host_reg_aux_udmc {
+ 	union {
+ 		struct {
+diff --git a/arch/arc/plat-eznps/mtm.c b/arch/arc/plat-eznps/mtm.c
+index 2388de3d09ef..ed0077ef666e 100644
+--- a/arch/arc/plat-eznps/mtm.c
++++ b/arch/arc/plat-eznps/mtm.c
+@@ -15,6 +15,8 @@
+  */
+ 
+ #include <linux/smp.h>
++#include <linux/init.h>
++#include <linux/kernel.h>
+ #include <linux/io.h>
+ #include <linux/log2.h>
+ #include <asm/arcregs.h>
+@@ -157,10 +159,10 @@ void mtm_enable_core(unsigned int cpu)
+ /* Verify and set the value of the mtm hs counter */
+ static int __init set_mtm_hs_ctr(char *ctr_str)
+ {
+-	long hs_ctr;
++	int hs_ctr;
+ 	int ret;
+ 
+-	ret = kstrtol(ctr_str, 0, &hs_ctr);
++	ret = kstrtoint(ctr_str, 0, &hs_ctr);
+ 
+ 	if (ret || hs_ctr > MT_HS_CNT_MAX || hs_ctr < MT_HS_CNT_MIN) {
+ 		pr_err("** Invalid @nps_mtm_hs_ctr [%d] needs to be [%d:%d] (incl)\n",
+diff --git a/arch/arm/probes/kprobes/core.c b/arch/arm/probes/kprobes/core.c
+index 52d1cd14fda4..091e9a3c2dcb 100644
+--- a/arch/arm/probes/kprobes/core.c
++++ b/arch/arm/probes/kprobes/core.c
+@@ -291,8 +291,8 @@ void __kprobes kprobe_handler(struct pt_regs *regs)
+ 				break;
+ 			case KPROBE_REENTER:
+ 				/* A nested probe was hit in FIQ, it is a BUG */
+-				pr_warn("Unrecoverable kprobe detected at %p.\n",
+-					p->addr);
++				pr_warn("Unrecoverable kprobe detected.\n");
++				dump_kprobe(p);
+ 				/* fall through */
+ 			default:
+ 				/* impossible cases */
+diff --git a/arch/arm/probes/kprobes/test-core.c b/arch/arm/probes/kprobes/test-core.c
+index 1c98a87786ca..a10d7187ad2c 100644
+--- a/arch/arm/probes/kprobes/test-core.c
++++ b/arch/arm/probes/kprobes/test-core.c
+@@ -1517,7 +1517,6 @@ fail:
+ 	print_registers(&result_regs);
+ 
+ 	if (mem) {
+-		pr_err("current_stack=%p\n", current_stack);
+ 		pr_err("expected_memory:\n");
+ 		print_memory(expected_memory, mem_size);
+ 		pr_err("result_memory:\n");
+diff --git a/arch/arm64/boot/dts/rockchip/rk3328.dtsi b/arch/arm64/boot/dts/rockchip/rk3328.dtsi
+index d70e409e2b0c..efac2202b16e 100644
+--- a/arch/arm64/boot/dts/rockchip/rk3328.dtsi
++++ b/arch/arm64/boot/dts/rockchip/rk3328.dtsi
+@@ -331,7 +331,7 @@
+ 		reg = <0x0 0xff120000 0x0 0x100>;
+ 		interrupts = <GIC_SPI 56 IRQ_TYPE_LEVEL_HIGH>;
+ 		clocks = <&cru SCLK_UART1>, <&cru PCLK_UART1>;
+-		clock-names = "sclk_uart", "pclk_uart";
++		clock-names = "baudclk", "apb_pclk";
+ 		dmas = <&dmac 4>, <&dmac 5>;
+ 		#dma-cells = <2>;
+ 		pinctrl-names = "default";
+diff --git a/arch/arm64/kernel/probes/kprobes.c b/arch/arm64/kernel/probes/kprobes.c
+index d849d9804011..22a5921562c7 100644
+--- a/arch/arm64/kernel/probes/kprobes.c
++++ b/arch/arm64/kernel/probes/kprobes.c
+@@ -275,7 +275,7 @@ static int __kprobes reenter_kprobe(struct kprobe *p,
+ 		break;
+ 	case KPROBE_HIT_SS:
+ 	case KPROBE_REENTER:
+-		pr_warn("Unrecoverable kprobe detected at %p.\n", p->addr);
++		pr_warn("Unrecoverable kprobe detected.\n");
+ 		dump_kprobe(p);
+ 		BUG();
+ 		break;
+diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
+index 1190d90e01e6..caa295cd5d09 100644
+--- a/arch/arm64/mm/init.c
++++ b/arch/arm64/mm/init.c
+@@ -287,7 +287,11 @@ static void __init zone_sizes_init(unsigned long min, unsigned long max)
+ #ifdef CONFIG_HAVE_ARCH_PFN_VALID
+ int pfn_valid(unsigned long pfn)
+ {
+-	return memblock_is_map_memory(pfn << PAGE_SHIFT);
++	phys_addr_t addr = pfn << PAGE_SHIFT;
++
++	if ((addr >> PAGE_SHIFT) != pfn)
++		return 0;
++	return memblock_is_map_memory(addr);
+ }
+ EXPORT_SYMBOL(pfn_valid);
+ #endif
+diff --git a/arch/mips/Makefile b/arch/mips/Makefile
+index a96d97a806c9..5977884b008e 100644
+--- a/arch/mips/Makefile
++++ b/arch/mips/Makefile
+@@ -155,15 +155,11 @@ cflags-$(CONFIG_CPU_R4300)	+= -march=r4300 -Wa,--trap
+ cflags-$(CONFIG_CPU_VR41XX)	+= -march=r4100 -Wa,--trap
+ cflags-$(CONFIG_CPU_R4X00)	+= -march=r4600 -Wa,--trap
+ cflags-$(CONFIG_CPU_TX49XX)	+= -march=r4600 -Wa,--trap
+-cflags-$(CONFIG_CPU_MIPS32_R1)	+= $(call cc-option,-march=mips32,-mips32 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
+-			-Wa,-mips32 -Wa,--trap
+-cflags-$(CONFIG_CPU_MIPS32_R2)	+= $(call cc-option,-march=mips32r2,-mips32r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
+-			-Wa,-mips32r2 -Wa,--trap
++cflags-$(CONFIG_CPU_MIPS32_R1)	+= -march=mips32 -Wa,--trap
++cflags-$(CONFIG_CPU_MIPS32_R2)	+= -march=mips32r2 -Wa,--trap
+ cflags-$(CONFIG_CPU_MIPS32_R6)	+= -march=mips32r6 -Wa,--trap -modd-spreg
+-cflags-$(CONFIG_CPU_MIPS64_R1)	+= $(call cc-option,-march=mips64,-mips64 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
+-			-Wa,-mips64 -Wa,--trap
+-cflags-$(CONFIG_CPU_MIPS64_R2)	+= $(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
+-			-Wa,-mips64r2 -Wa,--trap
++cflags-$(CONFIG_CPU_MIPS64_R1)	+= -march=mips64 -Wa,--trap
++cflags-$(CONFIG_CPU_MIPS64_R2)	+= -march=mips64r2 -Wa,--trap
+ cflags-$(CONFIG_CPU_MIPS64_R6)	+= -march=mips64r6 -Wa,--trap
+ cflags-$(CONFIG_CPU_R5000)	+= -march=r5000 -Wa,--trap
+ cflags-$(CONFIG_CPU_R5432)	+= $(call cc-option,-march=r5400,-march=r5000) \
+diff --git a/arch/mips/bcm47xx/setup.c b/arch/mips/bcm47xx/setup.c
+index 8c9cbf13d32a..6054d49e608e 100644
+--- a/arch/mips/bcm47xx/setup.c
++++ b/arch/mips/bcm47xx/setup.c
+@@ -212,12 +212,6 @@ static int __init bcm47xx_cpu_fixes(void)
+ 		 */
+ 		if (bcm47xx_bus.bcma.bus.chipinfo.id == BCMA_CHIP_ID_BCM4706)
+ 			cpu_wait = NULL;
+-
+-		/*
+-		 * BCM47XX Erratum "R10: PCIe Transactions Periodically Fail"
+-		 * Enable ExternalSync for sync instruction to take effect
+-		 */
+-		set_c0_config7(MIPS_CONF7_ES);
+ 		break;
+ #endif
+ 	}
+diff --git a/arch/mips/include/asm/mipsregs.h b/arch/mips/include/asm/mipsregs.h
+index 60c787d943b0..a6810923b3f0 100644
+--- a/arch/mips/include/asm/mipsregs.h
++++ b/arch/mips/include/asm/mipsregs.h
+@@ -680,8 +680,6 @@
+ #define MIPS_CONF7_WII		(_ULCAST_(1) << 31)
+ 
+ #define MIPS_CONF7_RPS		(_ULCAST_(1) << 2)
+-/* ExternalSync */
+-#define MIPS_CONF7_ES		(_ULCAST_(1) << 8)
+ 
+ #define MIPS_CONF7_IAR		(_ULCAST_(1) << 10)
+ #define MIPS_CONF7_AR		(_ULCAST_(1) << 16)
+@@ -2747,7 +2745,6 @@ __BUILD_SET_C0(status)
+ __BUILD_SET_C0(cause)
+ __BUILD_SET_C0(config)
+ __BUILD_SET_C0(config5)
+-__BUILD_SET_C0(config7)
+ __BUILD_SET_C0(intcontrol)
+ __BUILD_SET_C0(intctl)
+ __BUILD_SET_C0(srsmap)
+diff --git a/arch/mips/include/asm/processor.h b/arch/mips/include/asm/processor.h
+index 95b8c471f572..eb1f6030ab85 100644
+--- a/arch/mips/include/asm/processor.h
++++ b/arch/mips/include/asm/processor.h
+@@ -141,7 +141,7 @@ struct mips_fpu_struct {
+ 
+ #define NUM_DSP_REGS   6
+ 
+-typedef __u32 dspreg_t;
++typedef unsigned long dspreg_t;
+ 
+ struct mips_dsp_state {
+ 	dspreg_t	dspr[NUM_DSP_REGS];
+@@ -388,7 +388,20 @@ unsigned long get_wchan(struct task_struct *p);
+ #define KSTK_ESP(tsk) (task_pt_regs(tsk)->regs[29])
+ #define KSTK_STATUS(tsk) (task_pt_regs(tsk)->cp0_status)
+ 
++#ifdef CONFIG_CPU_LOONGSON3
++/*
++ * Loongson-3's SFB (Store-Fill-Buffer) may buffer writes indefinitely when a
++ * tight read loop is executed, because reads take priority over writes & the
++ * hardware (incorrectly) doesn't ensure that writes will eventually occur.
++ *
++ * Since spin loops of any kind should have a cpu_relax() in them, force an SFB
++ * flush from cpu_relax() such that any pending writes will become visible as
++ * expected.
++ */
++#define cpu_relax()	smp_mb()
++#else
+ #define cpu_relax()	barrier()
++#endif
+ 
+ /*
+  * Return_address is a replacement for __builtin_return_address(count)
+diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
+index e058cd300713..efffdf2464ab 100644
+--- a/arch/mips/kernel/ptrace.c
++++ b/arch/mips/kernel/ptrace.c
+@@ -847,7 +847,7 @@ long arch_ptrace(struct task_struct *child, long request,
+ 				goto out;
+ 			}
+ 			dregs = __get_dsp_regs(child);
+-			tmp = (unsigned long) (dregs[addr - DSP_BASE]);
++			tmp = dregs[addr - DSP_BASE];
+ 			break;
+ 		}
+ 		case DSP_CONTROL:
+diff --git a/arch/mips/kernel/ptrace32.c b/arch/mips/kernel/ptrace32.c
+index 89026d33a07b..6990240785f6 100644
+--- a/arch/mips/kernel/ptrace32.c
++++ b/arch/mips/kernel/ptrace32.c
+@@ -141,7 +141,7 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
+ 				goto out;
+ 			}
+ 			dregs = __get_dsp_regs(child);
+-			tmp = (unsigned long) (dregs[addr - DSP_BASE]);
++			tmp = dregs[addr - DSP_BASE];
+ 			break;
+ 		}
+ 		case DSP_CONTROL:
+diff --git a/arch/mips/lib/multi3.c b/arch/mips/lib/multi3.c
+index 111ad475aa0c..4c2483f410c2 100644
+--- a/arch/mips/lib/multi3.c
++++ b/arch/mips/lib/multi3.c
+@@ -4,12 +4,12 @@
+ #include "libgcc.h"
+ 
+ /*
+- * GCC 7 suboptimally generates __multi3 calls for mips64r6, so for that
+- * specific case only we'll implement it here.
++ * GCC 7 & older can suboptimally generate __multi3 calls for mips64r6, so for
++ * that specific case only we implement that intrinsic here.
+  *
+  * See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82981
+  */
+-#if defined(CONFIG_64BIT) && defined(CONFIG_CPU_MIPSR6) && (__GNUC__ == 7)
++#if defined(CONFIG_64BIT) && defined(CONFIG_CPU_MIPSR6) && (__GNUC__ < 8)
+ 
+ /* multiply 64-bit values, low 64-bits returned */
+ static inline long long notrace dmulu(long long a, long long b)
+diff --git a/arch/powerpc/net/bpf_jit_comp64.c b/arch/powerpc/net/bpf_jit_comp64.c
+index 254634fb3fc7..fee1e1f8c9d3 100644
+--- a/arch/powerpc/net/bpf_jit_comp64.c
++++ b/arch/powerpc/net/bpf_jit_comp64.c
+@@ -322,6 +322,7 @@ static int bpf_jit_build_body(struct bpf_prog *fp, u32 *image,
+ 		u64 imm64;
+ 		u8 *func;
+ 		u32 true_cond;
++		u32 tmp_idx;
+ 
+ 		/*
+ 		 * addrs[] maps a BPF bytecode address into a real offset from
+@@ -681,11 +682,7 @@ emit_clear:
+ 		case BPF_STX | BPF_XADD | BPF_W:
+ 			/* Get EA into TMP_REG_1 */
+ 			PPC_ADDI(b2p[TMP_REG_1], dst_reg, off);
+-			/* error if EA is not word-aligned */
+-			PPC_ANDI(b2p[TMP_REG_2], b2p[TMP_REG_1], 0x03);
+-			PPC_BCC_SHORT(COND_EQ, (ctx->idx * 4) + 12);
+-			PPC_LI(b2p[BPF_REG_0], 0);
+-			PPC_JMP(exit_addr);
++			tmp_idx = ctx->idx * 4;
+ 			/* load value from memory into TMP_REG_2 */
+ 			PPC_BPF_LWARX(b2p[TMP_REG_2], 0, b2p[TMP_REG_1], 0);
+ 			/* add value from src_reg into this */
+@@ -693,32 +690,16 @@ emit_clear:
+ 			/* store result back */
+ 			PPC_BPF_STWCX(b2p[TMP_REG_2], 0, b2p[TMP_REG_1]);
+ 			/* we're done if this succeeded */
+-			PPC_BCC_SHORT(COND_EQ, (ctx->idx * 4) + (7*4));
+-			/* otherwise, let's try once more */
+-			PPC_BPF_LWARX(b2p[TMP_REG_2], 0, b2p[TMP_REG_1], 0);
+-			PPC_ADD(b2p[TMP_REG_2], b2p[TMP_REG_2], src_reg);
+-			PPC_BPF_STWCX(b2p[TMP_REG_2], 0, b2p[TMP_REG_1]);
+-			/* exit if the store was not successful */
+-			PPC_LI(b2p[BPF_REG_0], 0);
+-			PPC_BCC(COND_NE, exit_addr);
++			PPC_BCC_SHORT(COND_NE, tmp_idx);
+ 			break;
+ 		/* *(u64 *)(dst + off) += src */
+ 		case BPF_STX | BPF_XADD | BPF_DW:
+ 			PPC_ADDI(b2p[TMP_REG_1], dst_reg, off);
+-			/* error if EA is not doubleword-aligned */
+-			PPC_ANDI(b2p[TMP_REG_2], b2p[TMP_REG_1], 0x07);
+-			PPC_BCC_SHORT(COND_EQ, (ctx->idx * 4) + (3*4));
+-			PPC_LI(b2p[BPF_REG_0], 0);
+-			PPC_JMP(exit_addr);
+-			PPC_BPF_LDARX(b2p[TMP_REG_2], 0, b2p[TMP_REG_1], 0);
+-			PPC_ADD(b2p[TMP_REG_2], b2p[TMP_REG_2], src_reg);
+-			PPC_BPF_STDCX(b2p[TMP_REG_2], 0, b2p[TMP_REG_1]);
+-			PPC_BCC_SHORT(COND_EQ, (ctx->idx * 4) + (7*4));
++			tmp_idx = ctx->idx * 4;
+ 			PPC_BPF_LDARX(b2p[TMP_REG_2], 0, b2p[TMP_REG_1], 0);
+ 			PPC_ADD(b2p[TMP_REG_2], b2p[TMP_REG_2], src_reg);
+ 			PPC_BPF_STDCX(b2p[TMP_REG_2], 0, b2p[TMP_REG_1]);
+-			PPC_LI(b2p[BPF_REG_0], 0);
+-			PPC_BCC(COND_NE, exit_addr);
++			PPC_BCC_SHORT(COND_NE, tmp_idx);
+ 			break;
+ 
+ 		/*
+diff --git a/arch/s390/include/asm/qdio.h b/arch/s390/include/asm/qdio.h
+index de11ecc99c7c..9c9970a5dfb1 100644
+--- a/arch/s390/include/asm/qdio.h
++++ b/arch/s390/include/asm/qdio.h
+@@ -262,7 +262,6 @@ struct qdio_outbuf_state {
+ 	void *user;
+ };
+ 
+-#define QDIO_OUTBUF_STATE_FLAG_NONE	0x00
+ #define QDIO_OUTBUF_STATE_FLAG_PENDING	0x01
+ 
+ #define CHSC_AC1_INITIATE_INPUTQ	0x80
+diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
+index 242b78c0a9ec..40f1888bc4ab 100644
+--- a/arch/s390/mm/fault.c
++++ b/arch/s390/mm/fault.c
+@@ -486,6 +486,8 @@ retry:
+ 	/* No reason to continue if interrupted by SIGKILL. */
+ 	if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current)) {
+ 		fault = VM_FAULT_SIGNAL;
++		if (flags & FAULT_FLAG_RETRY_NOWAIT)
++			goto out_up;
+ 		goto out;
+ 	}
+ 	if (unlikely(fault & VM_FAULT_ERROR))
+diff --git a/arch/s390/mm/page-states.c b/arch/s390/mm/page-states.c
+index 382153ff17e3..dc3cede7f2ec 100644
+--- a/arch/s390/mm/page-states.c
++++ b/arch/s390/mm/page-states.c
+@@ -271,7 +271,7 @@ void arch_set_page_states(int make_stable)
+ 			list_for_each(l, &zone->free_area[order].free_list[t]) {
+ 				page = list_entry(l, struct page, lru);
+ 				if (make_stable)
+-					set_page_stable_dat(page, 0);
++					set_page_stable_dat(page, order);
+ 				else
+ 					set_page_unused(page, order);
+ 			}
+diff --git a/arch/s390/net/bpf_jit_comp.c b/arch/s390/net/bpf_jit_comp.c
+index 45f1ea117128..6b1474fa99ab 100644
+--- a/arch/s390/net/bpf_jit_comp.c
++++ b/arch/s390/net/bpf_jit_comp.c
+@@ -518,8 +518,6 @@ static void bpf_jit_epilogue(struct bpf_jit *jit)
+ 			/* br %r1 */
+ 			_EMIT2(0x07f1);
+ 		} else {
+-			/* larl %r1,.+14 */
+-			EMIT6_PCREL_RILB(0xc0000000, REG_1, jit->prg + 14);
+ 			/* ex 0,S390_lowcore.br_r1_tampoline */
+ 			EMIT4_DISP(0x44000000, REG_0, REG_0,
+ 				   offsetof(struct lowcore, br_r1_trampoline));
+diff --git a/arch/s390/numa/numa.c b/arch/s390/numa/numa.c
+index 06a80434cfe6..5bd374491f94 100644
+--- a/arch/s390/numa/numa.c
++++ b/arch/s390/numa/numa.c
+@@ -134,26 +134,14 @@ void __init numa_setup(void)
+ {
+ 	pr_info("NUMA mode: %s\n", mode->name);
+ 	nodes_clear(node_possible_map);
++	/* Initially attach all possible CPUs to node 0. */
++	cpumask_copy(&node_to_cpumask_map[0], cpu_possible_mask);
+ 	if (mode->setup)
+ 		mode->setup();
+ 	numa_setup_memory();
+ 	memblock_dump_all();
+ }
+ 
+-/*
+- * numa_init_early() - Initialization initcall
+- *
+- * This runs when only one CPU is online and before the first
+- * topology update is called for by the scheduler.
+- */
+-static int __init numa_init_early(void)
+-{
+-	/* Attach all possible CPUs to node 0 for now. */
+-	cpumask_copy(&node_to_cpumask_map[0], cpu_possible_mask);
+-	return 0;
+-}
+-early_initcall(numa_init_early);
+-
+ /*
+  * numa_init_late() - Initialization initcall
+  *
+diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
+index 0fe649c0d542..960c4a362d8c 100644
+--- a/arch/s390/pci/pci.c
++++ b/arch/s390/pci/pci.c
+@@ -420,6 +420,8 @@ int arch_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
+ 	hwirq = 0;
+ 	for_each_pci_msi_entry(msi, pdev) {
+ 		rc = -EIO;
++		if (hwirq >= msi_vecs)
++			break;
+ 		irq = irq_alloc_desc(0);	/* Alloc irq on node 0 */
+ 		if (irq < 0)
+ 			return -ENOMEM;
+diff --git a/arch/sparc/include/asm/Kbuild b/arch/sparc/include/asm/Kbuild
+index 80ddc01f57ac..fcbc0c0aa087 100644
+--- a/arch/sparc/include/asm/Kbuild
++++ b/arch/sparc/include/asm/Kbuild
+@@ -14,6 +14,7 @@ generic-y += local64.h
+ generic-y += mcs_spinlock.h
+ generic-y += mm-arch-hooks.h
+ generic-y += module.h
++generic-y += msi.h
+ generic-y += preempt.h
+ generic-y += rwsem.h
+ generic-y += serial.h
+diff --git a/arch/sparc/kernel/time_64.c b/arch/sparc/kernel/time_64.c
+index 3b397081047a..83aaf4888999 100644
+--- a/arch/sparc/kernel/time_64.c
++++ b/arch/sparc/kernel/time_64.c
+@@ -813,7 +813,7 @@ static void __init get_tick_patch(void)
+ 	}
+ }
+ 
+-static void init_tick_ops(struct sparc64_tick_ops *ops)
++static void __init init_tick_ops(struct sparc64_tick_ops *ops)
+ {
+ 	unsigned long freq, quotient, tick;
+ 
+diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
+index 1c63a4b5320d..2af0af33362a 100644
+--- a/arch/x86/Kconfig
++++ b/arch/x86/Kconfig
+@@ -170,6 +170,7 @@ config X86
+ 	select HAVE_PERF_REGS
+ 	select HAVE_PERF_USER_STACK_DUMP
+ 	select HAVE_RCU_TABLE_FREE
++	select HAVE_RCU_TABLE_INVALIDATE	if HAVE_RCU_TABLE_FREE
+ 	select HAVE_REGS_AND_STACK_ACCESS_API
+ 	select HAVE_RELIABLE_STACKTRACE		if X86_64 && UNWINDER_FRAME_POINTER && STACK_VALIDATION
+ 	select HAVE_STACK_VALIDATION		if X86_64
+diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile
+index 98018a621f6b..3a250ca2406c 100644
+--- a/arch/x86/boot/compressed/Makefile
++++ b/arch/x86/boot/compressed/Makefile
+@@ -104,9 +104,13 @@ define cmd_check_data_rel
+ 	done
+ endef
+ 
++# We need to run two commands under "if_changed", so merge them into a
++# single invocation.
++quiet_cmd_check-and-link-vmlinux = LD      $@
++      cmd_check-and-link-vmlinux = $(cmd_check_data_rel); $(cmd_ld)
++
+ $(obj)/vmlinux: $(vmlinux-objs-y) FORCE
+-	$(call if_changed,check_data_rel)
+-	$(call if_changed,ld)
++	$(call if_changed,check-and-link-vmlinux)
+ 
+ OBJCOPYFLAGS_vmlinux.bin :=  -R .comment -S
+ $(obj)/vmlinux.bin: vmlinux FORCE
+diff --git a/arch/x86/entry/vdso/Makefile b/arch/x86/entry/vdso/Makefile
+index c366c0adeb40..b545bf9d2328 100644
+--- a/arch/x86/entry/vdso/Makefile
++++ b/arch/x86/entry/vdso/Makefile
+@@ -74,9 +74,9 @@ $(obj)/vdso-image-%.c: $(obj)/vdso%.so.dbg $(obj)/vdso%.so $(obj)/vdso2c FORCE
+ CFL := $(PROFILING) -mcmodel=small -fPIC -O2 -fasynchronous-unwind-tables -m64 \
+        $(filter -g%,$(KBUILD_CFLAGS)) $(call cc-option, -fno-stack-protector) \
+        -fno-omit-frame-pointer -foptimize-sibling-calls \
+-       -DDISABLE_BRANCH_PROFILING -DBUILD_VDSO
++       -DDISABLE_BRANCH_PROFILING -DBUILD_VDSO $(RETPOLINE_VDSO_CFLAGS)
+ 
+-$(vobjs): KBUILD_CFLAGS := $(filter-out $(GCC_PLUGINS_CFLAGS),$(KBUILD_CFLAGS)) $(CFL)
++$(vobjs): KBUILD_CFLAGS := $(filter-out $(GCC_PLUGINS_CFLAGS) $(RETPOLINE_CFLAGS),$(KBUILD_CFLAGS)) $(CFL)
+ 
+ #
+ # vDSO code runs in userspace and -pg doesn't help with profiling anyway.
+@@ -147,11 +147,13 @@ KBUILD_CFLAGS_32 := $(filter-out -mcmodel=kernel,$(KBUILD_CFLAGS_32))
+ KBUILD_CFLAGS_32 := $(filter-out -fno-pic,$(KBUILD_CFLAGS_32))
+ KBUILD_CFLAGS_32 := $(filter-out -mfentry,$(KBUILD_CFLAGS_32))
+ KBUILD_CFLAGS_32 := $(filter-out $(GCC_PLUGINS_CFLAGS),$(KBUILD_CFLAGS_32))
++KBUILD_CFLAGS_32 := $(filter-out $(RETPOLINE_CFLAGS),$(KBUILD_CFLAGS_32))
+ KBUILD_CFLAGS_32 += -m32 -msoft-float -mregparm=0 -fpic
+ KBUILD_CFLAGS_32 += $(call cc-option, -fno-stack-protector)
+ KBUILD_CFLAGS_32 += $(call cc-option, -foptimize-sibling-calls)
+ KBUILD_CFLAGS_32 += -fno-omit-frame-pointer
+ KBUILD_CFLAGS_32 += -DDISABLE_BRANCH_PROFILING
++KBUILD_CFLAGS_32 += $(RETPOLINE_VDSO_CFLAGS)
+ $(obj)/vdso32.so.dbg: KBUILD_CFLAGS = $(KBUILD_CFLAGS_32)
+ 
+ $(obj)/vdso32.so.dbg: FORCE \
+diff --git a/arch/x86/events/amd/ibs.c b/arch/x86/events/amd/ibs.c
+index 786fd875de92..8c51844694e2 100644
+--- a/arch/x86/events/amd/ibs.c
++++ b/arch/x86/events/amd/ibs.c
+@@ -579,7 +579,7 @@ static int perf_ibs_handle_irq(struct perf_ibs *perf_ibs, struct pt_regs *iregs)
+ {
+ 	struct cpu_perf_ibs *pcpu = this_cpu_ptr(perf_ibs->pcpu);
+ 	struct perf_event *event = pcpu->event;
+-	struct hw_perf_event *hwc = &event->hw;
++	struct hw_perf_event *hwc;
+ 	struct perf_sample_data data;
+ 	struct perf_raw_record raw;
+ 	struct pt_regs regs;
+@@ -602,6 +602,10 @@ fail:
+ 		return 0;
+ 	}
+ 
++	if (WARN_ON_ONCE(!event))
++		goto fail;
++
++	hwc = &event->hw;
+ 	msr = hwc->config_base;
+ 	buf = ibs_data.regs;
+ 	rdmsrl(msr, *buf);
+diff --git a/arch/x86/events/core.c b/arch/x86/events/core.c
+index 717c9219d00e..e5097dc85a06 100644
+--- a/arch/x86/events/core.c
++++ b/arch/x86/events/core.c
+@@ -2462,7 +2462,7 @@ perf_callchain_user(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs
+ 
+ 	perf_callchain_store(entry, regs->ip);
+ 
+-	if (!current->mm)
++	if (!nmi_uaccess_okay())
+ 		return;
+ 
+ 	if (perf_callchain_user32(regs, entry))
+diff --git a/arch/x86/include/asm/irqflags.h b/arch/x86/include/asm/irqflags.h
+index c14f2a74b2be..15450a675031 100644
+--- a/arch/x86/include/asm/irqflags.h
++++ b/arch/x86/include/asm/irqflags.h
+@@ -33,7 +33,8 @@ extern inline unsigned long native_save_fl(void)
+ 	return flags;
+ }
+ 
+-static inline void native_restore_fl(unsigned long flags)
++extern inline void native_restore_fl(unsigned long flags);
++extern inline void native_restore_fl(unsigned long flags)
+ {
+ 	asm volatile("push %0 ; popf"
+ 		     : /* no output */
+diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
+index 0e856c0628b3..b12c8d70dd33 100644
+--- a/arch/x86/include/asm/processor.h
++++ b/arch/x86/include/asm/processor.h
+@@ -132,6 +132,8 @@ struct cpuinfo_x86 {
+ 	/* Index into per_cpu list: */
+ 	u16			cpu_index;
+ 	u32			microcode;
++	/* Address space bits used by the cache internally */
++	u8			x86_cache_bits;
+ } __randomize_layout;
+ 
+ struct cpuid_regs {
+@@ -180,9 +182,9 @@ extern const struct seq_operations cpuinfo_op;
+ 
+ extern void cpu_detect(struct cpuinfo_x86 *c);
+ 
+-static inline unsigned long l1tf_pfn_limit(void)
++static inline unsigned long long l1tf_pfn_limit(void)
+ {
+-	return BIT(boot_cpu_data.x86_phys_bits - 1 - PAGE_SHIFT) - 1;
++	return BIT_ULL(boot_cpu_data.x86_cache_bits - 1 - PAGE_SHIFT);
+ }
+ 
+ extern void early_cpu_init(void);
+diff --git a/arch/x86/include/asm/tlbflush.h b/arch/x86/include/asm/tlbflush.h
+index 875ca99b82ee..5f00ecb9d251 100644
+--- a/arch/x86/include/asm/tlbflush.h
++++ b/arch/x86/include/asm/tlbflush.h
+@@ -175,8 +175,16 @@ struct tlb_state {
+ 	 * are on.  This means that it may not match current->active_mm,
+ 	 * which will contain the previous user mm when we're in lazy TLB
+ 	 * mode even if we've already switched back to swapper_pg_dir.
++	 *
++	 * During switch_mm_irqs_off(), loaded_mm will be set to
++	 * LOADED_MM_SWITCHING during the brief interrupts-off window
++	 * when CR3 and loaded_mm would otherwise be inconsistent.  This
++	 * is for nmi_uaccess_okay()'s benefit.
+ 	 */
+ 	struct mm_struct *loaded_mm;
++
++#define LOADED_MM_SWITCHING ((struct mm_struct *)1)
++
+ 	u16 loaded_mm_asid;
+ 	u16 next_asid;
+ 	/* last user mm's ctx id */
+@@ -246,6 +254,38 @@ struct tlb_state {
+ };
+ DECLARE_PER_CPU_SHARED_ALIGNED(struct tlb_state, cpu_tlbstate);
+ 
++/*
++ * Blindly accessing user memory from NMI context can be dangerous
++ * if we're in the middle of switching the current user task or
++ * switching the loaded mm.  It can also be dangerous if we
++ * interrupted some kernel code that was temporarily using a
++ * different mm.
++ */
++static inline bool nmi_uaccess_okay(void)
++{
++	struct mm_struct *loaded_mm = this_cpu_read(cpu_tlbstate.loaded_mm);
++	struct mm_struct *current_mm = current->mm;
++
++	VM_WARN_ON_ONCE(!loaded_mm);
++
++	/*
++	 * The condition we want to check is
++	 * current_mm->pgd == __va(read_cr3_pa()).  This may be slow, though,
++	 * if we're running in a VM with shadow paging, and nmi_uaccess_okay()
++	 * is supposed to be reasonably fast.
++	 *
++	 * Instead, we check the almost equivalent but somewhat conservative
++	 * condition below, and we rely on the fact that switch_mm_irqs_off()
++	 * sets loaded_mm to LOADED_MM_SWITCHING before writing to CR3.
++	 */
++	if (loaded_mm != current_mm)
++		return false;
++
++	VM_WARN_ON_ONCE(current_mm->pgd != __va(read_cr3_pa()));
++
++	return true;
++}
++
+ /* Initialize cr4 shadow for this CPU. */
+ static inline void cr4_init_shadow(void)
+ {
+diff --git a/arch/x86/include/asm/vgtod.h b/arch/x86/include/asm/vgtod.h
+index 52250681f68c..d92ccff4e615 100644
+--- a/arch/x86/include/asm/vgtod.h
++++ b/arch/x86/include/asm/vgtod.h
+@@ -93,7 +93,7 @@ static inline unsigned int __getcpu(void)
+ 	 *
+ 	 * If RDPID is available, use it.
+ 	 */
+-	alternative_io ("lsl %[p],%[seg]",
++	alternative_io ("lsl %[seg],%[p]",
+ 			".byte 0xf3,0x0f,0xc7,0xf8", /* RDPID %eax/rax */
+ 			X86_FEATURE_RDPID,
+ 			[p] "=a" (p), [seg] "r" (__PER_CPU_SEG));
+diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c
+index d07addb99b71..3e435f88621d 100644
+--- a/arch/x86/kernel/cpu/bugs.c
++++ b/arch/x86/kernel/cpu/bugs.c
+@@ -652,6 +652,45 @@ EXPORT_SYMBOL_GPL(l1tf_mitigation);
+ enum vmx_l1d_flush_state l1tf_vmx_mitigation = VMENTER_L1D_FLUSH_AUTO;
+ EXPORT_SYMBOL_GPL(l1tf_vmx_mitigation);
+ 
++/*
++ * These CPUs all support 44bits physical address space internally in the
++ * cache but CPUID can report a smaller number of physical address bits.
++ *
++ * The L1TF mitigation uses the top most address bit for the inversion of
++ * non present PTEs. When the installed memory reaches into the top most
++ * address bit due to memory holes, which has been observed on machines
++ * which report 36bits physical address bits and have 32G RAM installed,
++ * then the mitigation range check in l1tf_select_mitigation() triggers.
++ * This is a false positive because the mitigation is still possible due to
++ * the fact that the cache uses 44bit internally. Use the cache bits
++ * instead of the reported physical bits and adjust them on the affected
++ * machines to 44bit if the reported bits are less than 44.
++ */
++static void override_cache_bits(struct cpuinfo_x86 *c)
++{
++	if (c->x86 != 6)
++		return;
++
++	switch (c->x86_model) {
++	case INTEL_FAM6_NEHALEM:
++	case INTEL_FAM6_WESTMERE:
++	case INTEL_FAM6_SANDYBRIDGE:
++	case INTEL_FAM6_IVYBRIDGE:
++	case INTEL_FAM6_HASWELL_CORE:
++	case INTEL_FAM6_HASWELL_ULT:
++	case INTEL_FAM6_HASWELL_GT3E:
++	case INTEL_FAM6_BROADWELL_CORE:
++	case INTEL_FAM6_BROADWELL_GT3E:
++	case INTEL_FAM6_SKYLAKE_MOBILE:
++	case INTEL_FAM6_SKYLAKE_DESKTOP:
++	case INTEL_FAM6_KABYLAKE_MOBILE:
++	case INTEL_FAM6_KABYLAKE_DESKTOP:
++		if (c->x86_cache_bits < 44)
++			c->x86_cache_bits = 44;
++		break;
++	}
++}
++
+ static void __init l1tf_select_mitigation(void)
+ {
+ 	u64 half_pa;
+@@ -659,6 +698,8 @@ static void __init l1tf_select_mitigation(void)
+ 	if (!boot_cpu_has_bug(X86_BUG_L1TF))
+ 		return;
+ 
++	override_cache_bits(&boot_cpu_data);
++
+ 	switch (l1tf_mitigation) {
+ 	case L1TF_MITIGATION_OFF:
+ 	case L1TF_MITIGATION_FLUSH_NOWARN:
+@@ -678,14 +719,13 @@ static void __init l1tf_select_mitigation(void)
+ 	return;
+ #endif
+ 
+-	/*
+-	 * This is extremely unlikely to happen because almost all
+-	 * systems have far more MAX_PA/2 than RAM can be fit into
+-	 * DIMM slots.
+-	 */
+ 	half_pa = (u64)l1tf_pfn_limit() << PAGE_SHIFT;
+ 	if (e820__mapped_any(half_pa, ULLONG_MAX - half_pa, E820_TYPE_RAM)) {
+ 		pr_warn("System has more than MAX_PA/2 memory. L1TF mitigation not effective.\n");
++		pr_info("You may make it effective by booting the kernel with mem=%llu parameter.\n",
++				half_pa);
++		pr_info("However, doing so will make a part of your RAM unusable.\n");
++		pr_info("Reading https://www.kernel.org/doc/html/latest/admin-guide/l1tf.html might help you decide.\n");
+ 		return;
+ 	}
+ 
+diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
+index dd02ee4fa8cd..7d2a7890a823 100644
+--- a/arch/x86/kernel/cpu/common.c
++++ b/arch/x86/kernel/cpu/common.c
+@@ -890,6 +890,7 @@ static void identify_cpu_without_cpuid(struct cpuinfo_x86 *c)
+ 			}
+ 		}
+ #endif
++	c->x86_cache_bits = c->x86_phys_bits;
+ }
+ 
+ static const __initconst struct x86_cpu_id cpu_no_speculation[] = {
+diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c
+index 278be092b300..574dcdc092ab 100644
+--- a/arch/x86/kernel/cpu/intel.c
++++ b/arch/x86/kernel/cpu/intel.c
+@@ -150,6 +150,9 @@ static bool bad_spectre_microcode(struct cpuinfo_x86 *c)
+ 	if (cpu_has(c, X86_FEATURE_HYPERVISOR))
+ 		return false;
+ 
++	if (c->x86 != 6)
++		return false;
++
+ 	for (i = 0; i < ARRAY_SIZE(spectre_bad_microcodes); i++) {
+ 		if (c->x86_model == spectre_bad_microcodes[i].model &&
+ 		    c->x86_stepping == spectre_bad_microcodes[i].stepping)
+diff --git a/arch/x86/kernel/dumpstack.c b/arch/x86/kernel/dumpstack.c
+index a2d8a3908670..224de37821e4 100644
+--- a/arch/x86/kernel/dumpstack.c
++++ b/arch/x86/kernel/dumpstack.c
+@@ -17,6 +17,7 @@
+ #include <linux/bug.h>
+ #include <linux/nmi.h>
+ #include <linux/sysfs.h>
++#include <linux/kasan.h>
+ 
+ #include <asm/cpu_entry_area.h>
+ #include <asm/stacktrace.h>
+@@ -298,7 +299,10 @@ void oops_end(unsigned long flags, struct pt_regs *regs, int signr)
+ 	 * We're not going to return, but we might be on an IST stack or
+ 	 * have very little stack space left.  Rewind the stack and kill
+ 	 * the task.
++	 * Before we rewind the stack, we have to tell KASAN that we're going to
++	 * reuse the task stack and that existing poisons are invalid.
+ 	 */
++	kasan_unpoison_task_stack(current);
+ 	rewind_stack_do_exit(signr);
+ }
+ NOKPROBE_SYMBOL(oops_end);
+diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
+index fa093b77689f..cbeecfcc66d6 100644
+--- a/arch/x86/kernel/process_64.c
++++ b/arch/x86/kernel/process_64.c
+@@ -370,6 +370,7 @@ start_thread(struct pt_regs *regs, unsigned long new_ip, unsigned long new_sp)
+ 	start_thread_common(regs, new_ip, new_sp,
+ 			    __USER_CS, __USER_DS, 0);
+ }
++EXPORT_SYMBOL_GPL(start_thread);
+ 
+ #ifdef CONFIG_COMPAT
+ void compat_start_thread(struct pt_regs *regs, u32 new_ip, u32 new_sp)
+diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
+index 282bbcbf3b6a..f6bebcec60b4 100644
+--- a/arch/x86/kvm/svm.c
++++ b/arch/x86/kvm/svm.c
+@@ -5067,8 +5067,6 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu)
+ 
+ 	clgi();
+ 
+-	local_irq_enable();
+-
+ 	/*
+ 	 * If this vCPU has touched SPEC_CTRL, restore the guest's value if
+ 	 * it's non-zero. Since vmentry is serialising on affected CPUs, there
+@@ -5077,6 +5075,8 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu)
+ 	 */
+ 	x86_spec_ctrl_set_guest(svm->spec_ctrl, svm->virt_spec_ctrl);
+ 
++	local_irq_enable();
++
+ 	asm volatile (
+ 		"push %%" _ASM_BP "; \n\t"
+ 		"mov %c[rbx](%[svm]), %%" _ASM_BX " \n\t"
+@@ -5199,12 +5199,12 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu)
+ 	if (unlikely(!msr_write_intercepted(vcpu, MSR_IA32_SPEC_CTRL)))
+ 		svm->spec_ctrl = native_read_msr(MSR_IA32_SPEC_CTRL);
+ 
+-	x86_spec_ctrl_restore_host(svm->spec_ctrl, svm->virt_spec_ctrl);
+-
+ 	reload_tss(vcpu);
+ 
+ 	local_irq_disable();
+ 
++	x86_spec_ctrl_restore_host(svm->spec_ctrl, svm->virt_spec_ctrl);
++
+ 	vcpu->arch.cr2 = svm->vmcb->save.cr2;
+ 	vcpu->arch.regs[VCPU_REGS_RAX] = svm->vmcb->save.rax;
+ 	vcpu->arch.regs[VCPU_REGS_RSP] = svm->vmcb->save.rsp;
+diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
+index f015ca3997d9..8958b35f6008 100644
+--- a/arch/x86/kvm/vmx.c
++++ b/arch/x86/kvm/vmx.c
+@@ -8108,21 +8108,20 @@ static int handle_vmptrld(struct kvm_vcpu *vcpu)
+ /* Emulate the VMPTRST instruction */
+ static int handle_vmptrst(struct kvm_vcpu *vcpu)
+ {
+-	unsigned long exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
+-	u32 vmx_instruction_info = vmcs_read32(VMX_INSTRUCTION_INFO);
+-	gva_t vmcs_gva;
++	unsigned long exit_qual = vmcs_readl(EXIT_QUALIFICATION);
++	u32 instr_info = vmcs_read32(VMX_INSTRUCTION_INFO);
++	gpa_t current_vmptr = to_vmx(vcpu)->nested.current_vmptr;
+ 	struct x86_exception e;
++	gva_t gva;
+ 
+ 	if (!nested_vmx_check_permission(vcpu))
+ 		return 1;
+ 
+-	if (get_vmx_mem_address(vcpu, exit_qualification,
+-			vmx_instruction_info, true, &vmcs_gva))
++	if (get_vmx_mem_address(vcpu, exit_qual, instr_info, true, &gva))
+ 		return 1;
+ 	/* *_system ok, nested_vmx_check_permission has verified cpl=0 */
+-	if (kvm_write_guest_virt_system(vcpu, vmcs_gva,
+-					(void *)&to_vmx(vcpu)->nested.current_vmptr,
+-					sizeof(u64), &e)) {
++	if (kvm_write_guest_virt_system(vcpu, gva, (void *)&current_vmptr,
++					sizeof(gpa_t), &e)) {
+ 		kvm_inject_page_fault(vcpu, &e);
+ 		return 1;
+ 	}
+@@ -9171,9 +9170,6 @@ static int vmx_handle_exit(struct kvm_vcpu *vcpu)
+  * information but as all relevant affected CPUs have 32KiB L1D cache size
+  * there is no point in doing so.
+  */
+-#define L1D_CACHE_ORDER 4
+-static void *vmx_l1d_flush_pages;
+-
+ static void vmx_l1d_flush(struct kvm_vcpu *vcpu)
+ {
+ 	int size = PAGE_SIZE << L1D_CACHE_ORDER;
+diff --git a/arch/x86/lib/usercopy.c b/arch/x86/lib/usercopy.c
+index c8c6ad0d58b8..3f435d7fca5e 100644
+--- a/arch/x86/lib/usercopy.c
++++ b/arch/x86/lib/usercopy.c
+@@ -7,6 +7,8 @@
+ #include <linux/uaccess.h>
+ #include <linux/export.h>
+ 
++#include <asm/tlbflush.h>
++
+ /*
+  * We rely on the nested NMI work to allow atomic faults from the NMI path; the
+  * nested NMI paths are careful to preserve CR2.
+@@ -19,6 +21,9 @@ copy_from_user_nmi(void *to, const void __user *from, unsigned long n)
+ 	if (__range_not_ok(from, n, TASK_SIZE))
+ 		return n;
+ 
++	if (!nmi_uaccess_okay())
++		return n;
++
+ 	/*
+ 	 * Even though this function is typically called from NMI/IRQ context
+ 	 * disable pagefaults so that its behaviour is consistent even when
+diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
+index 37f60dfd7e4e..94b8d90830d1 100644
+--- a/arch/x86/mm/init.c
++++ b/arch/x86/mm/init.c
+@@ -892,7 +892,7 @@ unsigned long max_swapfile_size(void)
+ 
+ 	if (boot_cpu_has_bug(X86_BUG_L1TF)) {
+ 		/* Limit the swap file size to MAX_PA/2 for L1TF workaround */
+-		unsigned long l1tf_limit = l1tf_pfn_limit() + 1;
++		unsigned long long l1tf_limit = l1tf_pfn_limit();
+ 		/*
+ 		 * We encode swap offsets also with 3 bits below those for pfn
+ 		 * which makes the usable limit higher.
+@@ -900,7 +900,7 @@ unsigned long max_swapfile_size(void)
+ #if CONFIG_PGTABLE_LEVELS > 2
+ 		l1tf_limit <<= PAGE_SHIFT - SWP_OFFSET_FIRST_BIT;
+ #endif
+-		pages = min_t(unsigned long, l1tf_limit, pages);
++		pages = min_t(unsigned long long, l1tf_limit, pages);
+ 	}
+ 	return pages;
+ }
+diff --git a/arch/x86/mm/mmap.c b/arch/x86/mm/mmap.c
+index 5f4805d69aab..53f1c18b15bd 100644
+--- a/arch/x86/mm/mmap.c
++++ b/arch/x86/mm/mmap.c
+@@ -191,7 +191,7 @@ bool pfn_modify_allowed(unsigned long pfn, pgprot_t prot)
+ 	/* If it's real memory always allow */
+ 	if (pfn_valid(pfn))
+ 		return true;
+-	if (pfn > l1tf_pfn_limit() && !capable(CAP_SYS_ADMIN))
++	if (pfn >= l1tf_pfn_limit() && !capable(CAP_SYS_ADMIN))
+ 		return false;
+ 	return true;
+ }
+diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c
+index 0c936435ea93..83a3f4c935fc 100644
+--- a/arch/x86/mm/tlb.c
++++ b/arch/x86/mm/tlb.c
+@@ -292,6 +292,10 @@ void switch_mm_irqs_off(struct mm_struct *prev, struct mm_struct *next,
+ 
+ 		choose_new_asid(next, next_tlb_gen, &new_asid, &need_flush);
+ 
++		/* Let nmi_uaccess_okay() know that we're changing CR3. */
++		this_cpu_write(cpu_tlbstate.loaded_mm, LOADED_MM_SWITCHING);
++		barrier();
++
+ 		if (need_flush) {
+ 			this_cpu_write(cpu_tlbstate.ctxs[new_asid].ctx_id, next->context.ctx_id);
+ 			this_cpu_write(cpu_tlbstate.ctxs[new_asid].tlb_gen, next_tlb_gen);
+@@ -322,6 +326,9 @@ void switch_mm_irqs_off(struct mm_struct *prev, struct mm_struct *next,
+ 		if (next != &init_mm)
+ 			this_cpu_write(cpu_tlbstate.last_ctx_id, next->context.ctx_id);
+ 
++		/* Make sure we write CR3 before loaded_mm. */
++		barrier();
++
+ 		this_cpu_write(cpu_tlbstate.loaded_mm, next);
+ 		this_cpu_write(cpu_tlbstate.loaded_mm_asid, new_asid);
+ 	}
+diff --git a/drivers/base/power/clock_ops.c b/drivers/base/power/clock_ops.c
+index 8e2e4757adcb..5a42ae4078c2 100644
+--- a/drivers/base/power/clock_ops.c
++++ b/drivers/base/power/clock_ops.c
+@@ -185,7 +185,7 @@ EXPORT_SYMBOL_GPL(of_pm_clk_add_clk);
+ int of_pm_clk_add_clks(struct device *dev)
+ {
+ 	struct clk **clks;
+-	unsigned int i, count;
++	int i, count;
+ 	int ret;
+ 
+ 	if (!dev || !dev->of_node)
+diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
+index 5feba04ab940..5e55d03d3d01 100644
+--- a/drivers/block/nbd.c
++++ b/drivers/block/nbd.c
+@@ -112,12 +112,16 @@ struct nbd_device {
+ 	struct task_struct *task_setup;
+ };
+ 
++#define NBD_CMD_REQUEUED	1
++
+ struct nbd_cmd {
+ 	struct nbd_device *nbd;
++	struct mutex lock;
+ 	int index;
+ 	int cookie;
+-	struct completion send_complete;
+ 	blk_status_t status;
++	unsigned long flags;
++	u32 cmd_cookie;
+ };
+ 
+ #if IS_ENABLED(CONFIG_DEBUG_FS)
+@@ -146,6 +150,35 @@ static inline struct device *nbd_to_dev(struct nbd_device *nbd)
+ 	return disk_to_dev(nbd->disk);
+ }
+ 
++static void nbd_requeue_cmd(struct nbd_cmd *cmd)
++{
++	struct request *req = blk_mq_rq_from_pdu(cmd);
++
++	if (!test_and_set_bit(NBD_CMD_REQUEUED, &cmd->flags))
++		blk_mq_requeue_request(req, true);
++}
++
++#define NBD_COOKIE_BITS 32
++
++static u64 nbd_cmd_handle(struct nbd_cmd *cmd)
++{
++	struct request *req = blk_mq_rq_from_pdu(cmd);
++	u32 tag = blk_mq_unique_tag(req);
++	u64 cookie = cmd->cmd_cookie;
++
++	return (cookie << NBD_COOKIE_BITS) | tag;
++}
++
++static u32 nbd_handle_to_tag(u64 handle)
++{
++	return (u32)handle;
++}
++
++static u32 nbd_handle_to_cookie(u64 handle)
++{
++	return (u32)(handle >> NBD_COOKIE_BITS);
++}
++
+ static const char *nbdcmd_to_ascii(int cmd)
+ {
+ 	switch (cmd) {
+@@ -306,6 +339,9 @@ static enum blk_eh_timer_return nbd_xmit_timeout(struct request *req,
+ 	}
+ 	config = nbd->config;
+ 
++	if (!mutex_trylock(&cmd->lock))
++		return BLK_EH_RESET_TIMER;
++
+ 	if (config->num_connections > 1) {
+ 		dev_err_ratelimited(nbd_to_dev(nbd),
+ 				    "Connection timed out, retrying\n");
+@@ -328,7 +364,8 @@ static enum blk_eh_timer_return nbd_xmit_timeout(struct request *req,
+ 					nbd_mark_nsock_dead(nbd, nsock, 1);
+ 				mutex_unlock(&nsock->tx_lock);
+ 			}
+-			blk_mq_requeue_request(req, true);
++			mutex_unlock(&cmd->lock);
++			nbd_requeue_cmd(cmd);
+ 			nbd_config_put(nbd);
+ 			return BLK_EH_NOT_HANDLED;
+ 		}
+@@ -338,6 +375,7 @@ static enum blk_eh_timer_return nbd_xmit_timeout(struct request *req,
+ 	}
+ 	set_bit(NBD_TIMEDOUT, &config->runtime_flags);
+ 	cmd->status = BLK_STS_IOERR;
++	mutex_unlock(&cmd->lock);
+ 	sock_shutdown(nbd);
+ 	nbd_config_put(nbd);
+ 
+@@ -414,9 +452,9 @@ static int nbd_send_cmd(struct nbd_device *nbd, struct nbd_cmd *cmd, int index)
+ 	struct iov_iter from;
+ 	unsigned long size = blk_rq_bytes(req);
+ 	struct bio *bio;
++	u64 handle;
+ 	u32 type;
+ 	u32 nbd_cmd_flags = 0;
+-	u32 tag = blk_mq_unique_tag(req);
+ 	int sent = nsock->sent, skip = 0;
+ 
+ 	iov_iter_kvec(&from, WRITE | ITER_KVEC, &iov, 1, sizeof(request));
+@@ -458,6 +496,8 @@ static int nbd_send_cmd(struct nbd_device *nbd, struct nbd_cmd *cmd, int index)
+ 			goto send_pages;
+ 		}
+ 		iov_iter_advance(&from, sent);
++	} else {
++		cmd->cmd_cookie++;
+ 	}
+ 	cmd->index = index;
+ 	cmd->cookie = nsock->cookie;
+@@ -466,7 +506,8 @@ static int nbd_send_cmd(struct nbd_device *nbd, struct nbd_cmd *cmd, int index)
+ 		request.from = cpu_to_be64((u64)blk_rq_pos(req) << 9);
+ 		request.len = htonl(size);
+ 	}
+-	memcpy(request.handle, &tag, sizeof(tag));
++	handle = nbd_cmd_handle(cmd);
++	memcpy(request.handle, &handle, sizeof(handle));
+ 
+ 	dev_dbg(nbd_to_dev(nbd), "request %p: sending control (%s@%llu,%uB)\n",
+ 		cmd, nbdcmd_to_ascii(type),
+@@ -484,6 +525,7 @@ static int nbd_send_cmd(struct nbd_device *nbd, struct nbd_cmd *cmd, int index)
+ 				nsock->pending = req;
+ 				nsock->sent = sent;
+ 			}
++			set_bit(NBD_CMD_REQUEUED, &cmd->flags);
+ 			return BLK_STS_RESOURCE;
+ 		}
+ 		dev_err_ratelimited(disk_to_dev(nbd->disk),
+@@ -525,6 +567,7 @@ send_pages:
+ 					 */
+ 					nsock->pending = req;
+ 					nsock->sent = sent;
++					set_bit(NBD_CMD_REQUEUED, &cmd->flags);
+ 					return BLK_STS_RESOURCE;
+ 				}
+ 				dev_err(disk_to_dev(nbd->disk),
+@@ -557,10 +600,12 @@ static struct nbd_cmd *nbd_read_stat(struct nbd_device *nbd, int index)
+ 	struct nbd_reply reply;
+ 	struct nbd_cmd *cmd;
+ 	struct request *req = NULL;
++	u64 handle;
+ 	u16 hwq;
+ 	u32 tag;
+ 	struct kvec iov = {.iov_base = &reply, .iov_len = sizeof(reply)};
+ 	struct iov_iter to;
++	int ret = 0;
+ 
+ 	reply.magic = 0;
+ 	iov_iter_kvec(&to, READ | ITER_KVEC, &iov, 1, sizeof(reply));
+@@ -578,8 +623,8 @@ static struct nbd_cmd *nbd_read_stat(struct nbd_device *nbd, int index)
+ 		return ERR_PTR(-EPROTO);
+ 	}
+ 
+-	memcpy(&tag, reply.handle, sizeof(u32));
+-
++	memcpy(&handle, reply.handle, sizeof(handle));
++	tag = nbd_handle_to_tag(handle);
+ 	hwq = blk_mq_unique_tag_to_hwq(tag);
+ 	if (hwq < nbd->tag_set.nr_hw_queues)
+ 		req = blk_mq_tag_to_rq(nbd->tag_set.tags[hwq],
+@@ -590,11 +635,25 @@ static struct nbd_cmd *nbd_read_stat(struct nbd_device *nbd, int index)
+ 		return ERR_PTR(-ENOENT);
+ 	}
+ 	cmd = blk_mq_rq_to_pdu(req);
++
++	mutex_lock(&cmd->lock);
++	if (cmd->cmd_cookie != nbd_handle_to_cookie(handle)) {
++		dev_err(disk_to_dev(nbd->disk), "Double reply on req %p, cmd_cookie %u, handle cookie %u\n",
++			req, cmd->cmd_cookie, nbd_handle_to_cookie(handle));
++		ret = -ENOENT;
++		goto out;
++	}
++	if (test_bit(NBD_CMD_REQUEUED, &cmd->flags)) {
++		dev_err(disk_to_dev(nbd->disk), "Raced with timeout on req %p\n",
++			req);
++		ret = -ENOENT;
++		goto out;
++	}
+ 	if (ntohl(reply.error)) {
+ 		dev_err(disk_to_dev(nbd->disk), "Other side returned error (%d)\n",
+ 			ntohl(reply.error));
+ 		cmd->status = BLK_STS_IOERR;
+-		return cmd;
++		goto out;
+ 	}
+ 
+ 	dev_dbg(nbd_to_dev(nbd), "request %p: got reply\n", cmd);
+@@ -619,18 +678,18 @@ static struct nbd_cmd *nbd_read_stat(struct nbd_device *nbd, int index)
+ 				if (nbd_disconnected(config) ||
+ 				    config->num_connections <= 1) {
+ 					cmd->status = BLK_STS_IOERR;
+-					return cmd;
++					goto out;
+ 				}
+-				return ERR_PTR(-EIO);
++				ret = -EIO;
++				goto out;
+ 			}
+ 			dev_dbg(nbd_to_dev(nbd), "request %p: got %d bytes data\n",
+ 				cmd, bvec.bv_len);
+ 		}
+-	} else {
+-		/* See the comment in nbd_queue_rq. */
+-		wait_for_completion(&cmd->send_complete);
+ 	}
+-	return cmd;
++out:
++	mutex_unlock(&cmd->lock);
++	return ret ? ERR_PTR(ret) : cmd;
+ }
+ 
+ static void recv_work(struct work_struct *work)
+@@ -793,7 +852,7 @@ again:
+ 	 */
+ 	blk_mq_start_request(req);
+ 	if (unlikely(nsock->pending && nsock->pending != req)) {
+-		blk_mq_requeue_request(req, true);
++		nbd_requeue_cmd(cmd);
+ 		ret = 0;
+ 		goto out;
+ 	}
+@@ -806,7 +865,7 @@ again:
+ 		dev_err_ratelimited(disk_to_dev(nbd->disk),
+ 				    "Request send failed, requeueing\n");
+ 		nbd_mark_nsock_dead(nbd, nsock, 1);
+-		blk_mq_requeue_request(req, true);
++		nbd_requeue_cmd(cmd);
+ 		ret = 0;
+ 	}
+ out:
+@@ -830,7 +889,8 @@ static blk_status_t nbd_queue_rq(struct blk_mq_hw_ctx *hctx,
+ 	 * that the server is misbehaving (or there was an error) before we're
+ 	 * done sending everything over the wire.
+ 	 */
+-	init_completion(&cmd->send_complete);
++	mutex_lock(&cmd->lock);
++	clear_bit(NBD_CMD_REQUEUED, &cmd->flags);
+ 
+ 	/* We can be called directly from the user space process, which means we
+ 	 * could possibly have signals pending so our sendmsg will fail.  In
+@@ -842,7 +902,7 @@ static blk_status_t nbd_queue_rq(struct blk_mq_hw_ctx *hctx,
+ 		ret = BLK_STS_IOERR;
+ 	else if (!ret)
+ 		ret = BLK_STS_OK;
+-	complete(&cmd->send_complete);
++	mutex_unlock(&cmd->lock);
+ 
+ 	return ret;
+ }
+@@ -1446,6 +1506,8 @@ static int nbd_init_request(struct blk_mq_tag_set *set, struct request *rq,
+ {
+ 	struct nbd_cmd *cmd = blk_mq_rq_to_pdu(rq);
+ 	cmd->nbd = set->driver_data;
++	cmd->flags = 0;
++	mutex_init(&cmd->lock);
+ 	return 0;
+ }
+ 
+diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c
+index bfc566d3f31a..8cfa10ab7abc 100644
+--- a/drivers/cdrom/cdrom.c
++++ b/drivers/cdrom/cdrom.c
+@@ -2542,7 +2542,7 @@ static int cdrom_ioctl_drive_status(struct cdrom_device_info *cdi,
+ 	if (!CDROM_CAN(CDC_SELECT_DISC) ||
+ 	    (arg == CDSL_CURRENT || arg == CDSL_NONE))
+ 		return cdi->ops->drive_status(cdi, CDSL_CURRENT);
+-	if (((int)arg >= cdi->capacity))
++	if (arg >= cdi->capacity)
+ 		return -EINVAL;
+ 	return cdrom_slot_status(cdi, arg);
+ }
+diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c
+index dba5259def60..86b526b7d990 100644
+--- a/drivers/char/tpm/tpm-interface.c
++++ b/drivers/char/tpm/tpm-interface.c
+@@ -423,7 +423,7 @@ static ssize_t tpm_try_transmit(struct tpm_chip *chip,
+ 		header->tag = cpu_to_be16(TPM2_ST_NO_SESSIONS);
+ 		header->return_code = cpu_to_be32(TPM2_RC_COMMAND_CODE |
+ 						  TSS2_RESMGR_TPM_RC_LAYER);
+-		return bufsiz;
++		return sizeof(*header);
+ 	}
+ 
+ 	if (bufsiz > TPM_BUFSIZE)
+diff --git a/drivers/clk/rockchip/clk-rk3399.c b/drivers/clk/rockchip/clk-rk3399.c
+index 6847120b61cd..62d0a69f8da0 100644
+--- a/drivers/clk/rockchip/clk-rk3399.c
++++ b/drivers/clk/rockchip/clk-rk3399.c
+@@ -630,7 +630,7 @@ static struct rockchip_clk_branch rk3399_clk_branches[] __initdata = {
+ 	MUX(0, "clk_i2sout_src", mux_i2sch_p, CLK_SET_RATE_PARENT,
+ 			RK3399_CLKSEL_CON(31), 0, 2, MFLAGS),
+ 	COMPOSITE_NODIV(SCLK_I2S_8CH_OUT, "clk_i2sout", mux_i2sout_p, CLK_SET_RATE_PARENT,
+-			RK3399_CLKSEL_CON(30), 8, 2, MFLAGS,
++			RK3399_CLKSEL_CON(31), 2, 1, MFLAGS,
+ 			RK3399_CLKGATE_CON(8), 12, GFLAGS),
+ 
+ 	/* uart */
+diff --git a/drivers/crypto/vmx/aes_ctr.c b/drivers/crypto/vmx/aes_ctr.c
+index 02ba5f2aa0e6..cd777c75291d 100644
+--- a/drivers/crypto/vmx/aes_ctr.c
++++ b/drivers/crypto/vmx/aes_ctr.c
+@@ -27,21 +27,23 @@
+ #include <asm/switch_to.h>
+ #include <crypto/aes.h>
+ #include <crypto/scatterwalk.h>
++#include <crypto/skcipher.h>
++
+ #include "aesp8-ppc.h"
+ 
+ struct p8_aes_ctr_ctx {
+-	struct crypto_blkcipher *fallback;
++	struct crypto_skcipher *fallback;
+ 	struct aes_key enc_key;
+ };
+ 
+ static int p8_aes_ctr_init(struct crypto_tfm *tfm)
+ {
+ 	const char *alg = crypto_tfm_alg_name(tfm);
+-	struct crypto_blkcipher *fallback;
++	struct crypto_skcipher *fallback;
+ 	struct p8_aes_ctr_ctx *ctx = crypto_tfm_ctx(tfm);
+ 
+-	fallback =
+-	    crypto_alloc_blkcipher(alg, 0, CRYPTO_ALG_NEED_FALLBACK);
++	fallback = crypto_alloc_skcipher(alg, 0,
++			CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK);
+ 	if (IS_ERR(fallback)) {
+ 		printk(KERN_ERR
+ 		       "Failed to allocate transformation for '%s': %ld\n",
+@@ -49,9 +51,9 @@ static int p8_aes_ctr_init(struct crypto_tfm *tfm)
+ 		return PTR_ERR(fallback);
+ 	}
+ 
+-	crypto_blkcipher_set_flags(
++	crypto_skcipher_set_flags(
+ 		fallback,
+-		crypto_blkcipher_get_flags((struct crypto_blkcipher *)tfm));
++		crypto_skcipher_get_flags((struct crypto_skcipher *)tfm));
+ 	ctx->fallback = fallback;
+ 
+ 	return 0;
+@@ -62,7 +64,7 @@ static void p8_aes_ctr_exit(struct crypto_tfm *tfm)
+ 	struct p8_aes_ctr_ctx *ctx = crypto_tfm_ctx(tfm);
+ 
+ 	if (ctx->fallback) {
+-		crypto_free_blkcipher(ctx->fallback);
++		crypto_free_skcipher(ctx->fallback);
+ 		ctx->fallback = NULL;
+ 	}
+ }
+@@ -81,7 +83,7 @@ static int p8_aes_ctr_setkey(struct crypto_tfm *tfm, const u8 *key,
+ 	pagefault_enable();
+ 	preempt_enable();
+ 
+-	ret += crypto_blkcipher_setkey(ctx->fallback, key, keylen);
++	ret += crypto_skcipher_setkey(ctx->fallback, key, keylen);
+ 	return ret;
+ }
+ 
+@@ -115,15 +117,14 @@ static int p8_aes_ctr_crypt(struct blkcipher_desc *desc,
+ 	struct blkcipher_walk walk;
+ 	struct p8_aes_ctr_ctx *ctx =
+ 		crypto_tfm_ctx(crypto_blkcipher_tfm(desc->tfm));
+-	struct blkcipher_desc fallback_desc = {
+-		.tfm = ctx->fallback,
+-		.info = desc->info,
+-		.flags = desc->flags
+-	};
+ 
+ 	if (in_interrupt()) {
+-		ret = crypto_blkcipher_encrypt(&fallback_desc, dst, src,
+-					       nbytes);
++		SKCIPHER_REQUEST_ON_STACK(req, ctx->fallback);
++		skcipher_request_set_tfm(req, ctx->fallback);
++		skcipher_request_set_callback(req, desc->flags, NULL, NULL);
++		skcipher_request_set_crypt(req, src, dst, nbytes, desc->info);
++		ret = crypto_skcipher_encrypt(req);
++		skcipher_request_zero(req);
+ 	} else {
+ 		blkcipher_walk_init(&walk, dst, src, nbytes);
+ 		ret = blkcipher_walk_virt_block(desc, &walk, AES_BLOCK_SIZE);
+diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c
+index d6f3d9ee1350..70b3c556f6cf 100644
+--- a/drivers/gpio/gpiolib-acpi.c
++++ b/drivers/gpio/gpiolib-acpi.c
+@@ -25,6 +25,7 @@
+ 
+ struct acpi_gpio_event {
+ 	struct list_head node;
++	struct list_head initial_sync_list;
+ 	acpi_handle handle;
+ 	unsigned int pin;
+ 	unsigned int irq;
+@@ -50,6 +51,9 @@ struct acpi_gpio_chip {
+ 	struct list_head events;
+ };
+ 
++static LIST_HEAD(acpi_gpio_initial_sync_list);
++static DEFINE_MUTEX(acpi_gpio_initial_sync_list_lock);
++
+ static int acpi_gpiochip_find(struct gpio_chip *gc, void *data)
+ {
+ 	if (!gc->parent)
+@@ -142,6 +146,21 @@ static struct gpio_desc *acpi_get_gpiod(char *path, int pin)
+ 	return gpiochip_get_desc(chip, offset);
+ }
+ 
++static void acpi_gpio_add_to_initial_sync_list(struct acpi_gpio_event *event)
++{
++	mutex_lock(&acpi_gpio_initial_sync_list_lock);
++	list_add(&event->initial_sync_list, &acpi_gpio_initial_sync_list);
++	mutex_unlock(&acpi_gpio_initial_sync_list_lock);
++}
++
++static void acpi_gpio_del_from_initial_sync_list(struct acpi_gpio_event *event)
++{
++	mutex_lock(&acpi_gpio_initial_sync_list_lock);
++	if (!list_empty(&event->initial_sync_list))
++		list_del_init(&event->initial_sync_list);
++	mutex_unlock(&acpi_gpio_initial_sync_list_lock);
++}
++
+ static irqreturn_t acpi_gpio_irq_handler(int irq, void *data)
+ {
+ 	struct acpi_gpio_event *event = data;
+@@ -193,7 +212,7 @@ static acpi_status acpi_gpiochip_request_interrupt(struct acpi_resource *ares,
+ 	irq_handler_t handler = NULL;
+ 	struct gpio_desc *desc;
+ 	unsigned long irqflags;
+-	int ret, pin, irq;
++	int ret, pin, irq, value;
+ 
+ 	if (!acpi_gpio_get_irq_resource(ares, &agpio))
+ 		return AE_OK;
+@@ -228,6 +247,8 @@ static acpi_status acpi_gpiochip_request_interrupt(struct acpi_resource *ares,
+ 
+ 	gpiod_direction_input(desc);
+ 
++	value = gpiod_get_value(desc);
++
+ 	ret = gpiochip_lock_as_irq(chip, pin);
+ 	if (ret) {
+ 		dev_err(chip->parent, "Failed to lock GPIO as interrupt\n");
+@@ -269,6 +290,7 @@ static acpi_status acpi_gpiochip_request_interrupt(struct acpi_resource *ares,
+ 	event->irq = irq;
+ 	event->pin = pin;
+ 	event->desc = desc;
++	INIT_LIST_HEAD(&event->initial_sync_list);
+ 
+ 	ret = request_threaded_irq(event->irq, NULL, handler, irqflags,
+ 				   "ACPI:Event", event);
+@@ -283,6 +305,18 @@ static acpi_status acpi_gpiochip_request_interrupt(struct acpi_resource *ares,
+ 		enable_irq_wake(irq);
+ 
+ 	list_add_tail(&event->node, &acpi_gpio->events);
++
++	/*
++	 * Make sure we trigger the initial state of the IRQ when using RISING
++	 * or FALLING.  Note we run the handlers on late_init, the AML code
++	 * may refer to OperationRegions from other (builtin) drivers which
++	 * may be probed after us.
++	 */
++	if (handler == acpi_gpio_irq_handler &&
++	    (((irqflags & IRQF_TRIGGER_RISING) && value == 1) ||
++	     ((irqflags & IRQF_TRIGGER_FALLING) && value == 0)))
++		acpi_gpio_add_to_initial_sync_list(event);
++
+ 	return AE_OK;
+ 
+ fail_free_event:
+@@ -355,6 +389,8 @@ void acpi_gpiochip_free_interrupts(struct gpio_chip *chip)
+ 	list_for_each_entry_safe_reverse(event, ep, &acpi_gpio->events, node) {
+ 		struct gpio_desc *desc;
+ 
++		acpi_gpio_del_from_initial_sync_list(event);
++
+ 		if (irqd_is_wakeup_set(irq_get_irq_data(event->irq)))
+ 			disable_irq_wake(event->irq);
+ 
+@@ -1210,3 +1246,21 @@ bool acpi_can_fallback_to_crs(struct acpi_device *adev, const char *con_id)
+ 
+ 	return con_id == NULL;
+ }
++
++/* Sync the initial state of handlers after all builtin drivers have probed */
++static int acpi_gpio_initial_sync(void)
++{
++	struct acpi_gpio_event *event, *ep;
++
++	mutex_lock(&acpi_gpio_initial_sync_list_lock);
++	list_for_each_entry_safe(event, ep, &acpi_gpio_initial_sync_list,
++				 initial_sync_list) {
++		acpi_evaluate_object(event->handle, NULL, NULL, NULL);
++		list_del_init(&event->initial_sync_list);
++	}
++	mutex_unlock(&acpi_gpio_initial_sync_list_lock);
++
++	return 0;
++}
++/* We must use _sync so that this runs after the first deferred_probe run */
++late_initcall_sync(acpi_gpio_initial_sync);
+diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
+index b2431aee7887..f5091827628a 100644
+--- a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
++++ b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
+@@ -424,6 +424,18 @@ static void adv7511_hpd_work(struct work_struct *work)
+ 	else
+ 		status = connector_status_disconnected;
+ 
++	/*
++	 * The bridge resets its registers on unplug. So when we get a plug
++	 * event and we're already supposed to be powered, cycle the bridge to
++	 * restore its state.
++	 */
++	if (status == connector_status_connected &&
++	    adv7511->connector.status == connector_status_disconnected &&
++	    adv7511->powered) {
++		regcache_mark_dirty(adv7511->regmap);
++		adv7511_power_on(adv7511);
++	}
++
+ 	if (adv7511->connector.status != status) {
+ 		adv7511->connector.status = status;
+ 		drm_kms_helper_hotplug_event(adv7511->connector.dev);
+diff --git a/drivers/gpu/drm/imx/imx-ldb.c b/drivers/gpu/drm/imx/imx-ldb.c
+index 56dd7a9a8e25..dd5312b02a8d 100644
+--- a/drivers/gpu/drm/imx/imx-ldb.c
++++ b/drivers/gpu/drm/imx/imx-ldb.c
+@@ -612,6 +612,9 @@ static int imx_ldb_bind(struct device *dev, struct device *master, void *data)
+ 		return PTR_ERR(imx_ldb->regmap);
+ 	}
+ 
++	/* disable LDB by resetting the control register to POR default */
++	regmap_write(imx_ldb->regmap, IOMUXC_GPR2, 0);
++
+ 	imx_ldb->dev = dev;
+ 
+ 	if (of_id)
+@@ -652,14 +655,14 @@ static int imx_ldb_bind(struct device *dev, struct device *master, void *data)
+ 		if (ret || i < 0 || i > 1)
+ 			return -EINVAL;
+ 
++		if (!of_device_is_available(child))
++			continue;
++
+ 		if (dual && i > 0) {
+ 			dev_warn(dev, "dual-channel mode, ignoring second output\n");
+ 			continue;
+ 		}
+ 
+-		if (!of_device_is_available(child))
+-			continue;
+-
+ 		channel = &imx_ldb->channel[i];
+ 		channel->ldb = imx_ldb;
+ 		channel->chno = i;
+diff --git a/drivers/gpu/drm/udl/udl_drv.h b/drivers/gpu/drm/udl/udl_drv.h
+index 2a75ab80527a..2c149b841cf1 100644
+--- a/drivers/gpu/drm/udl/udl_drv.h
++++ b/drivers/gpu/drm/udl/udl_drv.h
+@@ -110,7 +110,7 @@ udl_fb_user_fb_create(struct drm_device *dev,
+ 		      struct drm_file *file,
+ 		      const struct drm_mode_fb_cmd2 *mode_cmd);
+ 
+-int udl_render_hline(struct drm_device *dev, int bpp, struct urb **urb_ptr,
++int udl_render_hline(struct drm_device *dev, int log_bpp, struct urb **urb_ptr,
+ 		     const char *front, char **urb_buf_ptr,
+ 		     u32 byte_offset, u32 device_byte_offset, u32 byte_width,
+ 		     int *ident_ptr, int *sent_ptr);
+diff --git a/drivers/gpu/drm/udl/udl_fb.c b/drivers/gpu/drm/udl/udl_fb.c
+index d5583190f3e4..8746eeeec44d 100644
+--- a/drivers/gpu/drm/udl/udl_fb.c
++++ b/drivers/gpu/drm/udl/udl_fb.c
+@@ -90,7 +90,10 @@ int udl_handle_damage(struct udl_framebuffer *fb, int x, int y,
+ 	int bytes_identical = 0;
+ 	struct urb *urb;
+ 	int aligned_x;
+-	int bpp = fb->base.format->cpp[0];
++	int log_bpp;
++
++	BUG_ON(!is_power_of_2(fb->base.format->cpp[0]));
++	log_bpp = __ffs(fb->base.format->cpp[0]);
+ 
+ 	if (!fb->active_16)
+ 		return 0;
+@@ -125,12 +128,12 @@ int udl_handle_damage(struct udl_framebuffer *fb, int x, int y,
+ 
+ 	for (i = y; i < y + height ; i++) {
+ 		const int line_offset = fb->base.pitches[0] * i;
+-		const int byte_offset = line_offset + (x * bpp);
+-		const int dev_byte_offset = (fb->base.width * bpp * i) + (x * bpp);
+-		if (udl_render_hline(dev, bpp, &urb,
++		const int byte_offset = line_offset + (x << log_bpp);
++		const int dev_byte_offset = (fb->base.width * i + x) << log_bpp;
++		if (udl_render_hline(dev, log_bpp, &urb,
+ 				     (char *) fb->obj->vmapping,
+ 				     &cmd, byte_offset, dev_byte_offset,
+-				     width * bpp,
++				     width << log_bpp,
+ 				     &bytes_identical, &bytes_sent))
+ 			goto error;
+ 	}
+@@ -149,7 +152,7 @@ int udl_handle_damage(struct udl_framebuffer *fb, int x, int y,
+ error:
+ 	atomic_add(bytes_sent, &udl->bytes_sent);
+ 	atomic_add(bytes_identical, &udl->bytes_identical);
+-	atomic_add(width*height*bpp, &udl->bytes_rendered);
++	atomic_add((width * height) << log_bpp, &udl->bytes_rendered);
+ 	end_cycles = get_cycles();
+ 	atomic_add(((unsigned int) ((end_cycles - start_cycles)
+ 		    >> 10)), /* Kcycles */
+@@ -221,7 +224,7 @@ static int udl_fb_open(struct fb_info *info, int user)
+ 
+ 		struct fb_deferred_io *fbdefio;
+ 
+-		fbdefio = kmalloc(sizeof(struct fb_deferred_io), GFP_KERNEL);
++		fbdefio = kzalloc(sizeof(struct fb_deferred_io), GFP_KERNEL);
+ 
+ 		if (fbdefio) {
+ 			fbdefio->delay = DL_DEFIO_WRITE_DELAY;
+diff --git a/drivers/gpu/drm/udl/udl_main.c b/drivers/gpu/drm/udl/udl_main.c
+index 0328b2c7b210..f8ea3c99b523 100644
+--- a/drivers/gpu/drm/udl/udl_main.c
++++ b/drivers/gpu/drm/udl/udl_main.c
+@@ -169,18 +169,13 @@ static void udl_free_urb_list(struct drm_device *dev)
+ 	struct list_head *node;
+ 	struct urb_node *unode;
+ 	struct urb *urb;
+-	int ret;
+ 	unsigned long flags;
+ 
+ 	DRM_DEBUG("Waiting for completes and freeing all render urbs\n");
+ 
+ 	/* keep waiting and freeing, until we've got 'em all */
+ 	while (count--) {
+-
+-		/* Getting interrupted means a leak, but ok at shutdown*/
+-		ret = down_interruptible(&udl->urbs.limit_sem);
+-		if (ret)
+-			break;
++		down(&udl->urbs.limit_sem);
+ 
+ 		spin_lock_irqsave(&udl->urbs.lock, flags);
+ 
+@@ -204,17 +199,22 @@ static void udl_free_urb_list(struct drm_device *dev)
+ static int udl_alloc_urb_list(struct drm_device *dev, int count, size_t size)
+ {
+ 	struct udl_device *udl = dev->dev_private;
+-	int i = 0;
+ 	struct urb *urb;
+ 	struct urb_node *unode;
+ 	char *buf;
++	size_t wanted_size = count * size;
+ 
+ 	spin_lock_init(&udl->urbs.lock);
+ 
++retry:
+ 	udl->urbs.size = size;
+ 	INIT_LIST_HEAD(&udl->urbs.list);
+ 
+-	while (i < count) {
++	sema_init(&udl->urbs.limit_sem, 0);
++	udl->urbs.count = 0;
++	udl->urbs.available = 0;
++
++	while (udl->urbs.count * size < wanted_size) {
+ 		unode = kzalloc(sizeof(struct urb_node), GFP_KERNEL);
+ 		if (!unode)
+ 			break;
+@@ -230,11 +230,16 @@ static int udl_alloc_urb_list(struct drm_device *dev, int count, size_t size)
+ 		}
+ 		unode->urb = urb;
+ 
+-		buf = usb_alloc_coherent(udl->udev, MAX_TRANSFER, GFP_KERNEL,
++		buf = usb_alloc_coherent(udl->udev, size, GFP_KERNEL,
+ 					 &urb->transfer_dma);
+ 		if (!buf) {
+ 			kfree(unode);
+ 			usb_free_urb(urb);
++			if (size > PAGE_SIZE) {
++				size /= 2;
++				udl_free_urb_list(dev);
++				goto retry;
++			}
+ 			break;
+ 		}
+ 
+@@ -245,16 +250,14 @@ static int udl_alloc_urb_list(struct drm_device *dev, int count, size_t size)
+ 
+ 		list_add_tail(&unode->entry, &udl->urbs.list);
+ 
+-		i++;
++		up(&udl->urbs.limit_sem);
++		udl->urbs.count++;
++		udl->urbs.available++;
+ 	}
+ 
+-	sema_init(&udl->urbs.limit_sem, i);
+-	udl->urbs.count = i;
+-	udl->urbs.available = i;
+-
+-	DRM_DEBUG("allocated %d %d byte urbs\n", i, (int) size);
++	DRM_DEBUG("allocated %d %d byte urbs\n", udl->urbs.count, (int) size);
+ 
+-	return i;
++	return udl->urbs.count;
+ }
+ 
+ struct urb *udl_get_urb(struct drm_device *dev)
+diff --git a/drivers/gpu/drm/udl/udl_transfer.c b/drivers/gpu/drm/udl/udl_transfer.c
+index b992644c17e6..f3331d33547a 100644
+--- a/drivers/gpu/drm/udl/udl_transfer.c
++++ b/drivers/gpu/drm/udl/udl_transfer.c
+@@ -83,12 +83,12 @@ static inline u16 pixel32_to_be16(const uint32_t pixel)
+ 		((pixel >> 8) & 0xf800));
+ }
+ 
+-static inline u16 get_pixel_val16(const uint8_t *pixel, int bpp)
++static inline u16 get_pixel_val16(const uint8_t *pixel, int log_bpp)
+ {
+-	u16 pixel_val16 = 0;
+-	if (bpp == 2)
++	u16 pixel_val16;
++	if (log_bpp == 1)
+ 		pixel_val16 = *(const uint16_t *)pixel;
+-	else if (bpp == 4)
++	else
+ 		pixel_val16 = pixel32_to_be16(*(const uint32_t *)pixel);
+ 	return pixel_val16;
+ }
+@@ -125,8 +125,9 @@ static void udl_compress_hline16(
+ 	const u8 *const pixel_end,
+ 	uint32_t *device_address_ptr,
+ 	uint8_t **command_buffer_ptr,
+-	const uint8_t *const cmd_buffer_end, int bpp)
++	const uint8_t *const cmd_buffer_end, int log_bpp)
+ {
++	const int bpp = 1 << log_bpp;
+ 	const u8 *pixel = *pixel_start_ptr;
+ 	uint32_t dev_addr  = *device_address_ptr;
+ 	uint8_t *cmd = *command_buffer_ptr;
+@@ -153,12 +154,12 @@ static void udl_compress_hline16(
+ 		raw_pixels_count_byte = cmd++; /*  we'll know this later */
+ 		raw_pixel_start = pixel;
+ 
+-		cmd_pixel_end = pixel + min3(MAX_CMD_PIXELS + 1UL,
+-					(unsigned long)(pixel_end - pixel) / bpp,
+-					(unsigned long)(cmd_buffer_end - 1 - cmd) / 2) * bpp;
++		cmd_pixel_end = pixel + (min3(MAX_CMD_PIXELS + 1UL,
++					(unsigned long)(pixel_end - pixel) >> log_bpp,
++					(unsigned long)(cmd_buffer_end - 1 - cmd) / 2) << log_bpp);
+ 
+ 		prefetch_range((void *) pixel, cmd_pixel_end - pixel);
+-		pixel_val16 = get_pixel_val16(pixel, bpp);
++		pixel_val16 = get_pixel_val16(pixel, log_bpp);
+ 
+ 		while (pixel < cmd_pixel_end) {
+ 			const u8 *const start = pixel;
+@@ -170,7 +171,7 @@ static void udl_compress_hline16(
+ 			pixel += bpp;
+ 
+ 			while (pixel < cmd_pixel_end) {
+-				pixel_val16 = get_pixel_val16(pixel, bpp);
++				pixel_val16 = get_pixel_val16(pixel, log_bpp);
+ 				if (pixel_val16 != repeating_pixel_val16)
+ 					break;
+ 				pixel += bpp;
+@@ -179,10 +180,10 @@ static void udl_compress_hline16(
+ 			if (unlikely(pixel > start + bpp)) {
+ 				/* go back and fill in raw pixel count */
+ 				*raw_pixels_count_byte = (((start -
+-						raw_pixel_start) / bpp) + 1) & 0xFF;
++						raw_pixel_start) >> log_bpp) + 1) & 0xFF;
+ 
+ 				/* immediately after raw data is repeat byte */
+-				*cmd++ = (((pixel - start) / bpp) - 1) & 0xFF;
++				*cmd++ = (((pixel - start) >> log_bpp) - 1) & 0xFF;
+ 
+ 				/* Then start another raw pixel span */
+ 				raw_pixel_start = pixel;
+@@ -192,14 +193,14 @@ static void udl_compress_hline16(
+ 
+ 		if (pixel > raw_pixel_start) {
+ 			/* finalize last RAW span */
+-			*raw_pixels_count_byte = ((pixel-raw_pixel_start) / bpp) & 0xFF;
++			*raw_pixels_count_byte = ((pixel - raw_pixel_start) >> log_bpp) & 0xFF;
+ 		} else {
+ 			/* undo unused byte */
+ 			cmd--;
+ 		}
+ 
+-		*cmd_pixels_count_byte = ((pixel - cmd_pixel_start) / bpp) & 0xFF;
+-		dev_addr += ((pixel - cmd_pixel_start) / bpp) * 2;
++		*cmd_pixels_count_byte = ((pixel - cmd_pixel_start) >> log_bpp) & 0xFF;
++		dev_addr += ((pixel - cmd_pixel_start) >> log_bpp) * 2;
+ 	}
+ 
+ 	if (cmd_buffer_end <= MIN_RLX_CMD_BYTES + cmd) {
+@@ -222,19 +223,19 @@ static void udl_compress_hline16(
+  * (that we can only write to, slowly, and can never read), and (optionally)
+  * our shadow copy that tracks what's been sent to that hardware buffer.
+  */
+-int udl_render_hline(struct drm_device *dev, int bpp, struct urb **urb_ptr,
++int udl_render_hline(struct drm_device *dev, int log_bpp, struct urb **urb_ptr,
+ 		     const char *front, char **urb_buf_ptr,
+ 		     u32 byte_offset, u32 device_byte_offset,
+ 		     u32 byte_width,
+ 		     int *ident_ptr, int *sent_ptr)
+ {
+ 	const u8 *line_start, *line_end, *next_pixel;
+-	u32 base16 = 0 + (device_byte_offset / bpp) * 2;
++	u32 base16 = 0 + (device_byte_offset >> log_bpp) * 2;
+ 	struct urb *urb = *urb_ptr;
+ 	u8 *cmd = *urb_buf_ptr;
+ 	u8 *cmd_end = (u8 *) urb->transfer_buffer + urb->transfer_buffer_length;
+ 
+-	BUG_ON(!(bpp == 2 || bpp == 4));
++	BUG_ON(!(log_bpp == 1 || log_bpp == 2));
+ 
+ 	line_start = (u8 *) (front + byte_offset);
+ 	next_pixel = line_start;
+@@ -244,7 +245,7 @@ int udl_render_hline(struct drm_device *dev, int bpp, struct urb **urb_ptr,
+ 
+ 		udl_compress_hline16(&next_pixel,
+ 			     line_end, &base16,
+-			     (u8 **) &cmd, (u8 *) cmd_end, bpp);
++			     (u8 **) &cmd, (u8 *) cmd_end, log_bpp);
+ 
+ 		if (cmd >= cmd_end) {
+ 			int len = cmd - (u8 *) urb->transfer_buffer;
+diff --git a/drivers/hwmon/nct6775.c b/drivers/hwmon/nct6775.c
+index 5f87764d7015..ca9941fa741b 100644
+--- a/drivers/hwmon/nct6775.c
++++ b/drivers/hwmon/nct6775.c
+@@ -63,6 +63,7 @@
+ #include <linux/bitops.h>
+ #include <linux/dmi.h>
+ #include <linux/io.h>
++#include <linux/nospec.h>
+ #include "lm75.h"
+ 
+ #define USE_ALTERNATE
+@@ -2642,6 +2643,7 @@ store_pwm_weight_temp_sel(struct device *dev, struct device_attribute *attr,
+ 		return err;
+ 	if (val > NUM_TEMP)
+ 		return -EINVAL;
++	val = array_index_nospec(val, NUM_TEMP + 1);
+ 	if (val && (!(data->have_temp & BIT(val - 1)) ||
+ 		    !data->temp_src[val - 1]))
+ 		return -EINVAL;
+diff --git a/drivers/i2c/busses/i2c-davinci.c b/drivers/i2c/busses/i2c-davinci.c
+index b8c43535f16c..5cf670f57be7 100644
+--- a/drivers/i2c/busses/i2c-davinci.c
++++ b/drivers/i2c/busses/i2c-davinci.c
+@@ -234,12 +234,16 @@ static void i2c_davinci_calc_clk_dividers(struct davinci_i2c_dev *dev)
+ 	/*
+ 	 * It's not always possible to have 1 to 2 ratio when d=7, so fall back
+ 	 * to minimal possible clkh in this case.
++	 *
++	 * Note:
++	 * CLKH is not allowed to be 0, in this case I2C clock is not generated
++	 * at all
+ 	 */
+-	if (clk >= clkl + d) {
++	if (clk > clkl + d) {
+ 		clkh = clk - clkl - d;
+ 		clkl -= d;
+ 	} else {
+-		clkh = 0;
++		clkh = 1;
+ 		clkl = clk - (d << 1);
+ 	}
+ 
+diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c
+index 6f2fe63e8f5a..7b961c9c62ef 100644
+--- a/drivers/i2c/i2c-core-base.c
++++ b/drivers/i2c/i2c-core-base.c
+@@ -638,7 +638,7 @@ static int i2c_check_addr_busy(struct i2c_adapter *adapter, int addr)
+ static void i2c_adapter_lock_bus(struct i2c_adapter *adapter,
+ 				 unsigned int flags)
+ {
+-	rt_mutex_lock(&adapter->bus_lock);
++	rt_mutex_lock_nested(&adapter->bus_lock, i2c_adapter_depth(adapter));
+ }
+ 
+ /**
+diff --git a/drivers/i2c/i2c-mux.c b/drivers/i2c/i2c-mux.c
+index 9669ca4937b8..7ba31f6bf148 100644
+--- a/drivers/i2c/i2c-mux.c
++++ b/drivers/i2c/i2c-mux.c
+@@ -144,7 +144,7 @@ static void i2c_mux_lock_bus(struct i2c_adapter *adapter, unsigned int flags)
+ 	struct i2c_mux_priv *priv = adapter->algo_data;
+ 	struct i2c_adapter *parent = priv->muxc->parent;
+ 
+-	rt_mutex_lock(&parent->mux_lock);
++	rt_mutex_lock_nested(&parent->mux_lock, i2c_adapter_depth(adapter));
+ 	if (!(flags & I2C_LOCK_ROOT_ADAPTER))
+ 		return;
+ 	i2c_lock_bus(parent, flags);
+@@ -181,7 +181,7 @@ static void i2c_parent_lock_bus(struct i2c_adapter *adapter,
+ 	struct i2c_mux_priv *priv = adapter->algo_data;
+ 	struct i2c_adapter *parent = priv->muxc->parent;
+ 
+-	rt_mutex_lock(&parent->mux_lock);
++	rt_mutex_lock_nested(&parent->mux_lock, i2c_adapter_depth(adapter));
+ 	i2c_lock_bus(parent, flags);
+ }
+ 
+diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
+index 3bdb799d3b4b..2c436376f13e 100644
+--- a/drivers/iommu/arm-smmu.c
++++ b/drivers/iommu/arm-smmu.c
+@@ -2100,12 +2100,16 @@ static int arm_smmu_device_probe(struct platform_device *pdev)
+ 	if (err)
+ 		return err;
+ 
+-	if (smmu->version == ARM_SMMU_V2 &&
+-	    smmu->num_context_banks != smmu->num_context_irqs) {
+-		dev_err(dev,
+-			"found only %d context interrupt(s) but %d required\n",
+-			smmu->num_context_irqs, smmu->num_context_banks);
+-		return -ENODEV;
++	if (smmu->version == ARM_SMMU_V2) {
++		if (smmu->num_context_banks > smmu->num_context_irqs) {
++			dev_err(dev,
++			      "found only %d context irq(s) but %d required\n",
++			      smmu->num_context_irqs, smmu->num_context_banks);
++			return -ENODEV;
++		}
++
++		/* Ignore superfluous interrupts */
++		smmu->num_context_irqs = smmu->num_context_banks;
+ 	}
+ 
+ 	for (i = 0; i < smmu->num_global_irqs; ++i) {
+diff --git a/drivers/misc/mei/main.c b/drivers/misc/mei/main.c
+index 22efc039f302..8d1d40dbf744 100644
+--- a/drivers/misc/mei/main.c
++++ b/drivers/misc/mei/main.c
+@@ -291,7 +291,6 @@ static ssize_t mei_write(struct file *file, const char __user *ubuf,
+ 		goto out;
+ 	}
+ 
+-	*offset = 0;
+ 	cb = mei_cl_alloc_cb(cl, length, MEI_FOP_WRITE, file);
+ 	if (!cb) {
+ 		rets = -ENOMEM;
+diff --git a/drivers/net/can/m_can/m_can.c b/drivers/net/can/m_can/m_can.c
+index ca3fa82316c2..d3ce904e929e 100644
+--- a/drivers/net/can/m_can/m_can.c
++++ b/drivers/net/can/m_can/m_can.c
+@@ -1637,8 +1637,6 @@ static int m_can_plat_probe(struct platform_device *pdev)
+ 	priv->can.clock.freq = clk_get_rate(cclk);
+ 	priv->mram_base = mram_addr;
+ 
+-	m_can_of_parse_mram(priv, mram_config_vals);
+-
+ 	platform_set_drvdata(pdev, dev);
+ 	SET_NETDEV_DEV(dev, &pdev->dev);
+ 
+@@ -1649,6 +1647,8 @@ static int m_can_plat_probe(struct platform_device *pdev)
+ 		goto failed_free_dev;
+ 	}
+ 
++	m_can_of_parse_mram(priv, mram_config_vals);
++
+ 	devm_can_led_init(dev);
+ 
+ 	dev_info(&pdev->dev, "%s device registered (irq=%d, version=%d)\n",
+@@ -1698,8 +1698,6 @@ static __maybe_unused int m_can_resume(struct device *dev)
+ 
+ 	pinctrl_pm_select_default_state(dev);
+ 
+-	m_can_init_ram(priv);
+-
+ 	priv->can.state = CAN_STATE_ERROR_ACTIVE;
+ 
+ 	if (netif_running(ndev)) {
+@@ -1709,6 +1707,7 @@ static __maybe_unused int m_can_resume(struct device *dev)
+ 		if (ret)
+ 			return ret;
+ 
++		m_can_init_ram(priv);
+ 		m_can_start(ndev);
+ 		netif_device_attach(ndev);
+ 		netif_start_queue(ndev);
+diff --git a/drivers/net/can/mscan/mpc5xxx_can.c b/drivers/net/can/mscan/mpc5xxx_can.c
+index c7427bdd3a4b..2949a381a94d 100644
+--- a/drivers/net/can/mscan/mpc5xxx_can.c
++++ b/drivers/net/can/mscan/mpc5xxx_can.c
+@@ -86,6 +86,11 @@ static u32 mpc52xx_can_get_clock(struct platform_device *ofdev,
+ 		return 0;
+ 	}
+ 	cdm = of_iomap(np_cdm, 0);
++	if (!cdm) {
++		of_node_put(np_cdm);
++		dev_err(&ofdev->dev, "can't map clock node!\n");
++		return 0;
++	}
+ 
+ 	if (in_8(&cdm->ipb_clk_sel) & 0x1)
+ 		freq *= 2;
+diff --git a/drivers/net/ethernet/3com/Kconfig b/drivers/net/ethernet/3com/Kconfig
+index 5b7658bcf020..5c3ef9fc8207 100644
+--- a/drivers/net/ethernet/3com/Kconfig
++++ b/drivers/net/ethernet/3com/Kconfig
+@@ -32,7 +32,7 @@ config EL3
+ 
+ config 3C515
+ 	tristate "3c515 ISA \"Fast EtherLink\""
+-	depends on ISA && ISA_DMA_API
++	depends on ISA && ISA_DMA_API && !PPC32
+ 	---help---
+ 	  If you have a 3Com ISA EtherLink XL "Corkscrew" 3c515 Fast Ethernet
+ 	  network card, say Y here.
+diff --git a/drivers/net/ethernet/amd/Kconfig b/drivers/net/ethernet/amd/Kconfig
+index d5c15e8bb3de..a8e8f4e9c1bb 100644
+--- a/drivers/net/ethernet/amd/Kconfig
++++ b/drivers/net/ethernet/amd/Kconfig
+@@ -44,7 +44,7 @@ config AMD8111_ETH
+ 
+ config LANCE
+ 	tristate "AMD LANCE and PCnet (AT1500 and NE2100) support"
+-	depends on ISA && ISA_DMA_API && !ARM
++	depends on ISA && ISA_DMA_API && !ARM && !PPC32
+ 	---help---
+ 	  If you have a network (Ethernet) card of this type, say Y here.
+ 	  Some LinkSys cards are of this type.
+@@ -138,7 +138,7 @@ config PCMCIA_NMCLAN
+ 
+ config NI65
+ 	tristate "NI6510 support"
+-	depends on ISA && ISA_DMA_API && !ARM
++	depends on ISA && ISA_DMA_API && !ARM && !PPC32
+ 	---help---
+ 	  If you have a network (Ethernet) card of this type, say Y here.
+ 
+diff --git a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
+index 8c9986f3fc01..3615c2a06fda 100644
+--- a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
++++ b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
+@@ -1685,6 +1685,7 @@ static struct sk_buff *atl1c_alloc_skb(struct atl1c_adapter *adapter)
+ 	skb = build_skb(page_address(page) + adapter->rx_page_offset,
+ 			adapter->rx_frag_size);
+ 	if (likely(skb)) {
++		skb_reserve(skb, NET_SKB_PAD);
+ 		adapter->rx_page_offset += adapter->rx_frag_size;
+ 		if (adapter->rx_page_offset >= PAGE_SIZE)
+ 			adapter->rx_page = NULL;
+diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c
+index 1e33abde4a3e..3fd1085a093f 100644
+--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c
++++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c
+@@ -3387,14 +3387,18 @@ static int bnx2x_set_rss_flags(struct bnx2x *bp, struct ethtool_rxnfc *info)
+ 			DP(BNX2X_MSG_ETHTOOL,
+ 			   "rss re-configured, UDP 4-tupple %s\n",
+ 			   udp_rss_requested ? "enabled" : "disabled");
+-			return bnx2x_rss(bp, &bp->rss_conf_obj, false, true);
++			if (bp->state == BNX2X_STATE_OPEN)
++				return bnx2x_rss(bp, &bp->rss_conf_obj, false,
++						 true);
+ 		} else if ((info->flow_type == UDP_V6_FLOW) &&
+ 			   (bp->rss_conf_obj.udp_rss_v6 != udp_rss_requested)) {
+ 			bp->rss_conf_obj.udp_rss_v6 = udp_rss_requested;
+ 			DP(BNX2X_MSG_ETHTOOL,
+ 			   "rss re-configured, UDP 4-tupple %s\n",
+ 			   udp_rss_requested ? "enabled" : "disabled");
+-			return bnx2x_rss(bp, &bp->rss_conf_obj, false, true);
++			if (bp->state == BNX2X_STATE_OPEN)
++				return bnx2x_rss(bp, &bp->rss_conf_obj, false,
++						 true);
+ 		}
+ 		return 0;
+ 
+@@ -3508,7 +3512,10 @@ static int bnx2x_set_rxfh(struct net_device *dev, const u32 *indir,
+ 		bp->rss_conf_obj.ind_table[i] = indir[i] + bp->fp->cl_id;
+ 	}
+ 
+-	return bnx2x_config_rss_eth(bp, false);
++	if (bp->state == BNX2X_STATE_OPEN)
++		return bnx2x_config_rss_eth(bp, false);
++
++	return 0;
+ }
+ 
+ /**
+diff --git a/drivers/net/ethernet/cirrus/Kconfig b/drivers/net/ethernet/cirrus/Kconfig
+index 5ab912937aff..ec0b545197e2 100644
+--- a/drivers/net/ethernet/cirrus/Kconfig
++++ b/drivers/net/ethernet/cirrus/Kconfig
+@@ -19,6 +19,7 @@ if NET_VENDOR_CIRRUS
+ config CS89x0
+ 	tristate "CS89x0 support"
+ 	depends on ISA || EISA || ARM
++	depends on !PPC32
+ 	---help---
+ 	  Support for CS89x0 chipset based Ethernet cards. If you have a
+ 	  network (Ethernet) card of this type, say Y and read the file
+diff --git a/drivers/net/ethernet/cisco/enic/enic_main.c b/drivers/net/ethernet/cisco/enic/enic_main.c
+index 800edfbd36c1..2bfaf3e118b1 100644
+--- a/drivers/net/ethernet/cisco/enic/enic_main.c
++++ b/drivers/net/ethernet/cisco/enic/enic_main.c
+@@ -2007,28 +2007,42 @@ static int enic_stop(struct net_device *netdev)
+ 	return 0;
+ }
+ 
++static int _enic_change_mtu(struct net_device *netdev, int new_mtu)
++{
++	bool running = netif_running(netdev);
++	int err = 0;
++
++	ASSERT_RTNL();
++	if (running) {
++		err = enic_stop(netdev);
++		if (err)
++			return err;
++	}
++
++	netdev->mtu = new_mtu;
++
++	if (running) {
++		err = enic_open(netdev);
++		if (err)
++			return err;
++	}
++
++	return 0;
++}
++
+ static int enic_change_mtu(struct net_device *netdev, int new_mtu)
+ {
+ 	struct enic *enic = netdev_priv(netdev);
+-	int running = netif_running(netdev);
+ 
+ 	if (enic_is_dynamic(enic) || enic_is_sriov_vf(enic))
+ 		return -EOPNOTSUPP;
+ 
+-	if (running)
+-		enic_stop(netdev);
+-
+-	netdev->mtu = new_mtu;
+-
+ 	if (netdev->mtu > enic->port_mtu)
+ 		netdev_warn(netdev,
+-			"interface MTU (%d) set higher than port MTU (%d)\n",
+-			netdev->mtu, enic->port_mtu);
++			    "interface MTU (%d) set higher than port MTU (%d)\n",
++			    netdev->mtu, enic->port_mtu);
+ 
+-	if (running)
+-		enic_open(netdev);
+-
+-	return 0;
++	return _enic_change_mtu(netdev, new_mtu);
+ }
+ 
+ static void enic_change_mtu_work(struct work_struct *work)
+@@ -2036,47 +2050,9 @@ static void enic_change_mtu_work(struct work_struct *work)
+ 	struct enic *enic = container_of(work, struct enic, change_mtu_work);
+ 	struct net_device *netdev = enic->netdev;
+ 	int new_mtu = vnic_dev_mtu(enic->vdev);
+-	int err;
+-	unsigned int i;
+-
+-	new_mtu = max_t(int, ENIC_MIN_MTU, min_t(int, ENIC_MAX_MTU, new_mtu));
+ 
+ 	rtnl_lock();
+-
+-	/* Stop RQ */
+-	del_timer_sync(&enic->notify_timer);
+-
+-	for (i = 0; i < enic->rq_count; i++)
+-		napi_disable(&enic->napi[i]);
+-
+-	vnic_intr_mask(&enic->intr[0]);
+-	enic_synchronize_irqs(enic);
+-	err = vnic_rq_disable(&enic->rq[0]);
+-	if (err) {
+-		rtnl_unlock();
+-		netdev_err(netdev, "Unable to disable RQ.\n");
+-		return;
+-	}
+-	vnic_rq_clean(&enic->rq[0], enic_free_rq_buf);
+-	vnic_cq_clean(&enic->cq[0]);
+-	vnic_intr_clean(&enic->intr[0]);
+-
+-	/* Fill RQ with new_mtu-sized buffers */
+-	netdev->mtu = new_mtu;
+-	vnic_rq_fill(&enic->rq[0], enic_rq_alloc_buf);
+-	/* Need at least one buffer on ring to get going */
+-	if (vnic_rq_desc_used(&enic->rq[0]) == 0) {
+-		rtnl_unlock();
+-		netdev_err(netdev, "Unable to alloc receive buffers.\n");
+-		return;
+-	}
+-
+-	/* Start RQ */
+-	vnic_rq_enable(&enic->rq[0]);
+-	napi_enable(&enic->napi[0]);
+-	vnic_intr_unmask(&enic->intr[0]);
+-	enic_notify_timer_start(enic);
+-
++	(void)_enic_change_mtu(netdev, new_mtu);
+ 	rtnl_unlock();
+ 
+ 	netdev_info(netdev, "interface MTU set as %d\n", netdev->mtu);
+@@ -2867,7 +2843,6 @@ static int enic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+ 	 */
+ 
+ 	enic->port_mtu = enic->config.mtu;
+-	(void)enic_change_mtu(netdev, enic->port_mtu);
+ 
+ 	err = enic_set_mac_addr(netdev, enic->mac_addr);
+ 	if (err) {
+@@ -2954,6 +2929,7 @@ static int enic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+ 	/* MTU range: 68 - 9000 */
+ 	netdev->min_mtu = ENIC_MIN_MTU;
+ 	netdev->max_mtu = ENIC_MAX_MTU;
++	netdev->mtu	= enic->port_mtu;
+ 
+ 	err = register_netdev(netdev);
+ 	if (err) {
+diff --git a/drivers/net/ethernet/huawei/hinic/hinic_main.c b/drivers/net/ethernet/huawei/hinic/hinic_main.c
+index eb53bd93065e..a696b5b2d40e 100644
+--- a/drivers/net/ethernet/huawei/hinic/hinic_main.c
++++ b/drivers/net/ethernet/huawei/hinic/hinic_main.c
+@@ -981,6 +981,7 @@ static int nic_dev_init(struct pci_dev *pdev)
+ 	hinic_hwdev_cb_register(nic_dev->hwdev, HINIC_MGMT_MSG_CMD_LINK_STATUS,
+ 				nic_dev, link_status_event_handler);
+ 
++	SET_NETDEV_DEV(netdev, &pdev->dev);
+ 	err = register_netdev(netdev);
+ 	if (err) {
+ 		dev_err(&pdev->dev, "Failed to register netdev\n");
+diff --git a/drivers/net/ethernet/netronome/nfp/flower/main.c b/drivers/net/ethernet/netronome/nfp/flower/main.c
+index 91fe03617106..72496060e332 100644
+--- a/drivers/net/ethernet/netronome/nfp/flower/main.c
++++ b/drivers/net/ethernet/netronome/nfp/flower/main.c
+@@ -79,7 +79,7 @@ nfp_flower_repr_get_type_and_port(struct nfp_app *app, u32 port_id, u8 *port)
+ 			return NFP_REPR_TYPE_VF;
+ 	}
+ 
+-	return NFP_FLOWER_CMSG_PORT_TYPE_UNSPEC;
++	return __NFP_REPR_TYPE_MAX;
+ }
+ 
+ static struct net_device *
+@@ -90,6 +90,8 @@ nfp_flower_repr_get(struct nfp_app *app, u32 port_id)
+ 	u8 port = 0;
+ 
+ 	repr_type = nfp_flower_repr_get_type_and_port(app, port_id, &port);
++	if (repr_type > NFP_REPR_TYPE_MAX)
++		return NULL;
+ 
+ 	reprs = rcu_dereference(app->reprs[repr_type]);
+ 	if (!reprs)
+diff --git a/drivers/net/ethernet/qlogic/qed/qed_l2.c b/drivers/net/ethernet/qlogic/qed/qed_l2.c
+index c5452b445c37..83c1c4fa102b 100644
+--- a/drivers/net/ethernet/qlogic/qed/qed_l2.c
++++ b/drivers/net/ethernet/qlogic/qed/qed_l2.c
+@@ -663,7 +663,7 @@ qed_sp_update_mcast_bin(struct qed_hwfn *p_hwfn,
+ 
+ 	p_ramrod->common.update_approx_mcast_flg = 1;
+ 	for (i = 0; i < ETH_MULTICAST_MAC_BINS_IN_REGS; i++) {
+-		u32 *p_bins = (u32 *)p_params->bins;
++		u32 *p_bins = p_params->bins;
+ 
+ 		p_ramrod->approx_mcast.bins[i] = cpu_to_le32(p_bins[i]);
+ 	}
+@@ -1474,8 +1474,8 @@ qed_sp_eth_filter_mcast(struct qed_hwfn *p_hwfn,
+ 			enum spq_mode comp_mode,
+ 			struct qed_spq_comp_cb *p_comp_data)
+ {
+-	unsigned long bins[ETH_MULTICAST_MAC_BINS_IN_REGS];
+ 	struct vport_update_ramrod_data *p_ramrod = NULL;
++	u32 bins[ETH_MULTICAST_MAC_BINS_IN_REGS];
+ 	struct qed_spq_entry *p_ent = NULL;
+ 	struct qed_sp_init_data init_data;
+ 	u8 abs_vport_id = 0;
+@@ -1511,26 +1511,25 @@ qed_sp_eth_filter_mcast(struct qed_hwfn *p_hwfn,
+ 	/* explicitly clear out the entire vector */
+ 	memset(&p_ramrod->approx_mcast.bins, 0,
+ 	       sizeof(p_ramrod->approx_mcast.bins));
+-	memset(bins, 0, sizeof(unsigned long) *
+-	       ETH_MULTICAST_MAC_BINS_IN_REGS);
++	memset(bins, 0, sizeof(bins));
+ 	/* filter ADD op is explicit set op and it removes
+ 	 *  any existing filters for the vport
+ 	 */
+ 	if (p_filter_cmd->opcode == QED_FILTER_ADD) {
+ 		for (i = 0; i < p_filter_cmd->num_mc_addrs; i++) {
+-			u32 bit;
++			u32 bit, nbits;
+ 
+ 			bit = qed_mcast_bin_from_mac(p_filter_cmd->mac[i]);
+-			__set_bit(bit, bins);
++			nbits = sizeof(u32) * BITS_PER_BYTE;
++			bins[bit / nbits] |= 1 << (bit % nbits);
+ 		}
+ 
+ 		/* Convert to correct endianity */
+ 		for (i = 0; i < ETH_MULTICAST_MAC_BINS_IN_REGS; i++) {
+ 			struct vport_update_ramrod_mcast *p_ramrod_bins;
+-			u32 *p_bins = (u32 *)bins;
+ 
+ 			p_ramrod_bins = &p_ramrod->approx_mcast;
+-			p_ramrod_bins->bins[i] = cpu_to_le32(p_bins[i]);
++			p_ramrod_bins->bins[i] = cpu_to_le32(bins[i]);
+ 		}
+ 	}
+ 
+diff --git a/drivers/net/ethernet/qlogic/qed/qed_l2.h b/drivers/net/ethernet/qlogic/qed/qed_l2.h
+index cc1f248551c9..91d383f3a661 100644
+--- a/drivers/net/ethernet/qlogic/qed/qed_l2.h
++++ b/drivers/net/ethernet/qlogic/qed/qed_l2.h
+@@ -214,7 +214,7 @@ struct qed_sp_vport_update_params {
+ 	u8				anti_spoofing_en;
+ 	u8				update_accept_any_vlan_flg;
+ 	u8				accept_any_vlan;
+-	unsigned long			bins[8];
++	u32				bins[8];
+ 	struct qed_rss_params		*rss_params;
+ 	struct qed_filter_accept_flags	accept_flags;
+ 	struct qed_sge_tpa_params	*sge_tpa_params;
+diff --git a/drivers/net/ethernet/qlogic/qed/qed_mcp.c b/drivers/net/ethernet/qlogic/qed/qed_mcp.c
+index 376485d99357..3c469355f5a4 100644
+--- a/drivers/net/ethernet/qlogic/qed/qed_mcp.c
++++ b/drivers/net/ethernet/qlogic/qed/qed_mcp.c
+@@ -1182,6 +1182,7 @@ static void qed_mcp_handle_link_change(struct qed_hwfn *p_hwfn,
+ 		break;
+ 	default:
+ 		p_link->speed = 0;
++		p_link->link_up = 0;
+ 	}
+ 
+ 	if (p_link->link_up && p_link->speed)
+@@ -1279,9 +1280,15 @@ int qed_mcp_set_link(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt, bool b_up)
+ 	phy_cfg.pause |= (params->pause.forced_tx) ? ETH_PAUSE_TX : 0;
+ 	phy_cfg.adv_speed = params->speed.advertised_speeds;
+ 	phy_cfg.loopback_mode = params->loopback_mode;
+-	if (p_hwfn->mcp_info->capabilities & FW_MB_PARAM_FEATURE_SUPPORT_EEE) {
+-		if (params->eee.enable)
+-			phy_cfg.eee_cfg |= EEE_CFG_EEE_ENABLED;
++
++	/* There are MFWs that share this capability regardless of whether
++	 * this is feasible or not. And given that at the very least adv_caps
++	 * would be set internally by qed, we want to make sure LFA would
++	 * still work.
++	 */
++	if ((p_hwfn->mcp_info->capabilities &
++	     FW_MB_PARAM_FEATURE_SUPPORT_EEE) && params->eee.enable) {
++		phy_cfg.eee_cfg |= EEE_CFG_EEE_ENABLED;
+ 		if (params->eee.tx_lpi_enable)
+ 			phy_cfg.eee_cfg |= EEE_CFG_TX_LPI;
+ 		if (params->eee.adv_caps & QED_EEE_1G_ADV)
+diff --git a/drivers/net/ethernet/qlogic/qed/qed_sriov.c b/drivers/net/ethernet/qlogic/qed/qed_sriov.c
+index d08fe350ab6c..c6411158afd7 100644
+--- a/drivers/net/ethernet/qlogic/qed/qed_sriov.c
++++ b/drivers/net/ethernet/qlogic/qed/qed_sriov.c
+@@ -2826,7 +2826,7 @@ qed_iov_vp_update_mcast_bin_param(struct qed_hwfn *p_hwfn,
+ 
+ 	p_data->update_approx_mcast_flg = 1;
+ 	memcpy(p_data->bins, p_mcast_tlv->bins,
+-	       sizeof(unsigned long) * ETH_MULTICAST_MAC_BINS_IN_REGS);
++	       sizeof(u32) * ETH_MULTICAST_MAC_BINS_IN_REGS);
+ 	*tlvs_mask |= 1 << QED_IOV_VP_UPDATE_MCAST;
+ }
+ 
+diff --git a/drivers/net/ethernet/qlogic/qed/qed_vf.c b/drivers/net/ethernet/qlogic/qed/qed_vf.c
+index 91b5e9f02a62..6eb85db69f9a 100644
+--- a/drivers/net/ethernet/qlogic/qed/qed_vf.c
++++ b/drivers/net/ethernet/qlogic/qed/qed_vf.c
+@@ -1126,7 +1126,7 @@ int qed_vf_pf_vport_update(struct qed_hwfn *p_hwfn,
+ 		resp_size += sizeof(struct pfvf_def_resp_tlv);
+ 
+ 		memcpy(p_mcast_tlv->bins, p_params->bins,
+-		       sizeof(unsigned long) * ETH_MULTICAST_MAC_BINS_IN_REGS);
++		       sizeof(u32) * ETH_MULTICAST_MAC_BINS_IN_REGS);
+ 	}
+ 
+ 	update_rx = p_params->accept_flags.update_rx_mode_config;
+@@ -1272,7 +1272,7 @@ void qed_vf_pf_filter_mcast(struct qed_hwfn *p_hwfn,
+ 			u32 bit;
+ 
+ 			bit = qed_mcast_bin_from_mac(p_filter_cmd->mac[i]);
+-			__set_bit(bit, sp_params.bins);
++			sp_params.bins[bit / 32] |= 1 << (bit % 32);
+ 		}
+ 	}
+ 
+diff --git a/drivers/net/ethernet/qlogic/qed/qed_vf.h b/drivers/net/ethernet/qlogic/qed/qed_vf.h
+index 97d44dfb38ca..1e93c712fa34 100644
+--- a/drivers/net/ethernet/qlogic/qed/qed_vf.h
++++ b/drivers/net/ethernet/qlogic/qed/qed_vf.h
+@@ -392,7 +392,12 @@ struct vfpf_vport_update_mcast_bin_tlv {
+ 	struct channel_tlv tl;
+ 	u8 padding[4];
+ 
+-	u64 bins[8];
++	/* There are only 256 approx bins, and in HSI they're divided into
++	 * 32-bit values. As old VFs used to set-bit to the values on its side,
++	 * the upper half of the array is never expected to contain any data.
++	 */
++	u64 bins[4];
++	u64 obsolete_bins[4];
+ };
+ 
+ struct vfpf_vport_update_accept_param_tlv {
+diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet_mdio.c b/drivers/net/ethernet/xilinx/xilinx_axienet_mdio.c
+index 16c3bfbe1992..757a3b37ae8a 100644
+--- a/drivers/net/ethernet/xilinx/xilinx_axienet_mdio.c
++++ b/drivers/net/ethernet/xilinx/xilinx_axienet_mdio.c
+@@ -218,6 +218,7 @@ issue:
+ 	ret = of_mdiobus_register(bus, np1);
+ 	if (ret) {
+ 		mdiobus_free(bus);
++		lp->mii_bus = NULL;
+ 		return ret;
+ 	}
+ 	return 0;
+diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c
+index 6d3811c869fd..31684f3382f6 100644
+--- a/drivers/net/usb/qmi_wwan.c
++++ b/drivers/net/usb/qmi_wwan.c
+@@ -1245,7 +1245,7 @@ static const struct usb_device_id products[] = {
+ 	{QMI_FIXED_INTF(0x413c, 0x81b3, 8)},	/* Dell Wireless 5809e Gobi(TM) 4G LTE Mobile Broadband Card (rev3) */
+ 	{QMI_FIXED_INTF(0x413c, 0x81b6, 8)},	/* Dell Wireless 5811e */
+ 	{QMI_FIXED_INTF(0x413c, 0x81b6, 10)},	/* Dell Wireless 5811e */
+-	{QMI_FIXED_INTF(0x413c, 0x81d7, 1)},	/* Dell Wireless 5821e */
++	{QMI_FIXED_INTF(0x413c, 0x81d7, 0)},	/* Dell Wireless 5821e */
+ 	{QMI_FIXED_INTF(0x03f0, 0x4e1d, 8)},	/* HP lt4111 LTE/EV-DO/HSPA+ Gobi 4G Module */
+ 	{QMI_FIXED_INTF(0x03f0, 0x9d1d, 1)},	/* HP lt4120 Snapdragon X5 LTE */
+ 	{QMI_FIXED_INTF(0x22de, 0x9061, 3)},	/* WeTelecom WPD-600N */
+diff --git a/drivers/net/wan/lmc/lmc_main.c b/drivers/net/wan/lmc/lmc_main.c
+index 4698450c77d1..bb43d176eb4e 100644
+--- a/drivers/net/wan/lmc/lmc_main.c
++++ b/drivers/net/wan/lmc/lmc_main.c
+@@ -1371,7 +1371,7 @@ static irqreturn_t lmc_interrupt (int irq, void *dev_instance) /*fold00*/
+             case 0x001:
+                 printk(KERN_WARNING "%s: Master Abort (naughty)\n", dev->name);
+                 break;
+-            case 0x010:
++            case 0x002:
+                 printk(KERN_WARNING "%s: Target Abort (not so naughty)\n", dev->name);
+                 break;
+             default:
+diff --git a/drivers/net/wireless/broadcom/b43/leds.c b/drivers/net/wireless/broadcom/b43/leds.c
+index cb987c2ecc6b..87131f663292 100644
+--- a/drivers/net/wireless/broadcom/b43/leds.c
++++ b/drivers/net/wireless/broadcom/b43/leds.c
+@@ -131,7 +131,7 @@ static int b43_register_led(struct b43_wldev *dev, struct b43_led *led,
+ 	led->wl = dev->wl;
+ 	led->index = led_index;
+ 	led->activelow = activelow;
+-	strncpy(led->name, name, sizeof(led->name));
++	strlcpy(led->name, name, sizeof(led->name));
+ 	atomic_set(&led->state, 0);
+ 
+ 	led->led_dev.name = led->name;
+diff --git a/drivers/net/wireless/broadcom/b43legacy/leds.c b/drivers/net/wireless/broadcom/b43legacy/leds.c
+index fd4565389c77..bc922118b6ac 100644
+--- a/drivers/net/wireless/broadcom/b43legacy/leds.c
++++ b/drivers/net/wireless/broadcom/b43legacy/leds.c
+@@ -101,7 +101,7 @@ static int b43legacy_register_led(struct b43legacy_wldev *dev,
+ 	led->dev = dev;
+ 	led->index = led_index;
+ 	led->activelow = activelow;
+-	strncpy(led->name, name, sizeof(led->name));
++	strlcpy(led->name, name, sizeof(led->name));
+ 
+ 	led->led_dev.name = led->name;
+ 	led->led_dev.default_trigger = default_trigger;
+diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
+index a67d03716510..afb99876fa9e 100644
+--- a/drivers/nvme/host/pci.c
++++ b/drivers/nvme/host/pci.c
+@@ -306,6 +306,14 @@ static bool nvme_dbbuf_update_and_check_event(u16 value, u32 *dbbuf_db,
+ 		old_value = *dbbuf_db;
+ 		*dbbuf_db = value;
+ 
++		/*
++		 * Ensure that the doorbell is updated before reading the event
++		 * index from memory.  The controller needs to provide similar
++		 * ordering to ensure the envent index is updated before reading
++		 * the doorbell.
++		 */
++		mb();
++
+ 		if (!nvme_dbbuf_need_event(*dbbuf_ei, value, old_value))
+ 			return false;
+ 	}
+diff --git a/drivers/pinctrl/freescale/pinctrl-imx1-core.c b/drivers/pinctrl/freescale/pinctrl-imx1-core.c
+index a4e9f430d452..e2cca91fd266 100644
+--- a/drivers/pinctrl/freescale/pinctrl-imx1-core.c
++++ b/drivers/pinctrl/freescale/pinctrl-imx1-core.c
+@@ -433,7 +433,7 @@ static void imx1_pinconf_group_dbg_show(struct pinctrl_dev *pctldev,
+ 	const char *name;
+ 	int i, ret;
+ 
+-	if (group > info->ngroups)
++	if (group >= info->ngroups)
+ 		return;
+ 
+ 	seq_puts(s, "\n");
+diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
+index fe98d4ac0df3..e1e7e587b45b 100644
+--- a/drivers/platform/x86/ideapad-laptop.c
++++ b/drivers/platform/x86/ideapad-laptop.c
+@@ -1097,10 +1097,10 @@ static const struct dmi_system_id no_hw_rfkill_list[] = {
+ 		},
+ 	},
+ 	{
+-		.ident = "Lenovo Legion Y520-15IKBN",
++		.ident = "Lenovo Legion Y520-15IKB",
+ 		.matches = {
+ 			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+-			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Y520-15IKBN"),
++			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Y520-15IKB"),
+ 		},
+ 	},
+ 	{
+diff --git a/drivers/power/supply/generic-adc-battery.c b/drivers/power/supply/generic-adc-battery.c
+index 37e523374fe0..371b5ec70087 100644
+--- a/drivers/power/supply/generic-adc-battery.c
++++ b/drivers/power/supply/generic-adc-battery.c
+@@ -243,10 +243,10 @@ static int gab_probe(struct platform_device *pdev)
+ 	struct power_supply_desc *psy_desc;
+ 	struct power_supply_config psy_cfg = {};
+ 	struct gab_platform_data *pdata = pdev->dev.platform_data;
+-	enum power_supply_property *properties;
+ 	int ret = 0;
+ 	int chan;
+-	int index = 0;
++	int index = ARRAY_SIZE(gab_props);
++	bool any = false;
+ 
+ 	adc_bat = devm_kzalloc(&pdev->dev, sizeof(*adc_bat), GFP_KERNEL);
+ 	if (!adc_bat) {
+@@ -280,8 +280,6 @@ static int gab_probe(struct platform_device *pdev)
+ 	}
+ 
+ 	memcpy(psy_desc->properties, gab_props, sizeof(gab_props));
+-	properties = (enum power_supply_property *)
+-			((char *)psy_desc->properties + sizeof(gab_props));
+ 
+ 	/*
+ 	 * getting channel from iio and copying the battery properties
+@@ -295,15 +293,22 @@ static int gab_probe(struct platform_device *pdev)
+ 			adc_bat->channel[chan] = NULL;
+ 		} else {
+ 			/* copying properties for supported channels only */
+-			memcpy(properties + sizeof(*(psy_desc->properties)) * index,
+-					&gab_dyn_props[chan],
+-					sizeof(gab_dyn_props[chan]));
+-			index++;
++			int index2;
++
++			for (index2 = 0; index2 < index; index2++) {
++				if (psy_desc->properties[index2] ==
++				    gab_dyn_props[chan])
++					break;	/* already known */
++			}
++			if (index2 == index)	/* really new */
++				psy_desc->properties[index++] =
++					gab_dyn_props[chan];
++			any = true;
+ 		}
+ 	}
+ 
+ 	/* none of the channels are supported so let's bail out */
+-	if (index == 0) {
++	if (!any) {
+ 		ret = -ENODEV;
+ 		goto second_mem_fail;
+ 	}
+@@ -314,7 +319,7 @@ static int gab_probe(struct platform_device *pdev)
+ 	 * as come channels may be not be supported by the device.So
+ 	 * we need to take care of that.
+ 	 */
+-	psy_desc->num_properties = ARRAY_SIZE(gab_props) + index;
++	psy_desc->num_properties = index;
+ 
+ 	adc_bat->psy = power_supply_register(&pdev->dev, psy_desc, &psy_cfg);
+ 	if (IS_ERR(adc_bat->psy)) {
+diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c
+index 8941e7caaf4d..c7afdbded26b 100644
+--- a/drivers/s390/cio/qdio_main.c
++++ b/drivers/s390/cio/qdio_main.c
+@@ -641,21 +641,20 @@ static inline unsigned long qdio_aob_for_buffer(struct qdio_output_q *q,
+ 	unsigned long phys_aob = 0;
+ 
+ 	if (!q->use_cq)
+-		goto out;
++		return 0;
+ 
+ 	if (!q->aobs[bufnr]) {
+ 		struct qaob *aob = qdio_allocate_aob();
+ 		q->aobs[bufnr] = aob;
+ 	}
+ 	if (q->aobs[bufnr]) {
+-		q->sbal_state[bufnr].flags = QDIO_OUTBUF_STATE_FLAG_NONE;
+ 		q->sbal_state[bufnr].aob = q->aobs[bufnr];
+ 		q->aobs[bufnr]->user1 = (u64) q->sbal_state[bufnr].user;
+ 		phys_aob = virt_to_phys(q->aobs[bufnr]);
+ 		WARN_ON_ONCE(phys_aob & 0xFF);
+ 	}
+ 
+-out:
++	q->sbal_state[bufnr].flags = 0;
+ 	return phys_aob;
+ }
+ 
+diff --git a/drivers/scsi/fcoe/fcoe_ctlr.c b/drivers/scsi/fcoe/fcoe_ctlr.c
+index fff6f1851dc1..03019e07abb9 100644
+--- a/drivers/scsi/fcoe/fcoe_ctlr.c
++++ b/drivers/scsi/fcoe/fcoe_ctlr.c
+@@ -754,9 +754,9 @@ int fcoe_ctlr_els_send(struct fcoe_ctlr *fip, struct fc_lport *lport,
+ 	case ELS_LOGO:
+ 		if (fip->mode == FIP_MODE_VN2VN) {
+ 			if (fip->state != FIP_ST_VNMP_UP)
+-				return -EINVAL;
++				goto drop;
+ 			if (ntoh24(fh->fh_d_id) == FC_FID_FLOGI)
+-				return -EINVAL;
++				goto drop;
+ 		} else {
+ 			if (fip->state != FIP_ST_ENABLED)
+ 				return 0;
+@@ -799,9 +799,9 @@ int fcoe_ctlr_els_send(struct fcoe_ctlr *fip, struct fc_lport *lport,
+ 	fip->send(fip, skb);
+ 	return -EINPROGRESS;
+ drop:
+-	kfree_skb(skb);
+ 	LIBFCOE_FIP_DBG(fip, "drop els_send op %u d_id %x\n",
+ 			op, ntoh24(fh->fh_d_id));
++	kfree_skb(skb);
+ 	return -EINVAL;
+ }
+ EXPORT_SYMBOL(fcoe_ctlr_els_send);
+diff --git a/drivers/scsi/libfc/fc_rport.c b/drivers/scsi/libfc/fc_rport.c
+index 31d31aad3de1..89b1f1af2fd4 100644
+--- a/drivers/scsi/libfc/fc_rport.c
++++ b/drivers/scsi/libfc/fc_rport.c
+@@ -2164,6 +2164,7 @@ static void fc_rport_recv_logo_req(struct fc_lport *lport, struct fc_frame *fp)
+ 		FC_RPORT_DBG(rdata, "Received LOGO request while in state %s\n",
+ 			     fc_rport_state(rdata));
+ 
++		rdata->flags &= ~FC_RP_STARTED;
+ 		fc_rport_enter_delete(rdata, RPORT_EV_STOP);
+ 		mutex_unlock(&rdata->rp_mutex);
+ 		kref_put(&rdata->kref, fc_rport_destroy);
+diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c
+index bddbe2da5283..cf8a15e54d83 100644
+--- a/drivers/scsi/libiscsi.c
++++ b/drivers/scsi/libiscsi.c
+@@ -284,11 +284,11 @@ static int iscsi_check_tmf_restrictions(struct iscsi_task *task, int opcode)
+ 		 */
+ 		if (opcode != ISCSI_OP_SCSI_DATA_OUT) {
+ 			iscsi_conn_printk(KERN_INFO, conn,
+-					  "task [op %x/%x itt "
++					  "task [op %x itt "
+ 					  "0x%x/0x%x] "
+ 					  "rejected.\n",
+-					  task->hdr->opcode, opcode,
+-					  task->itt, task->hdr_itt);
++					  opcode, task->itt,
++					  task->hdr_itt);
+ 			return -EACCES;
+ 		}
+ 		/*
+@@ -297,10 +297,10 @@ static int iscsi_check_tmf_restrictions(struct iscsi_task *task, int opcode)
+ 		 */
+ 		if (conn->session->fast_abort) {
+ 			iscsi_conn_printk(KERN_INFO, conn,
+-					  "task [op %x/%x itt "
++					  "task [op %x itt "
+ 					  "0x%x/0x%x] fast abort.\n",
+-					  task->hdr->opcode, opcode,
+-					  task->itt, task->hdr_itt);
++					  opcode, task->itt,
++					  task->hdr_itt);
+ 			return -EACCES;
+ 		}
+ 		break;
+diff --git a/drivers/scsi/mpt3sas/mpt3sas_transport.c b/drivers/scsi/mpt3sas/mpt3sas_transport.c
+index d3940c5d079d..63dd9bc21ff2 100644
+--- a/drivers/scsi/mpt3sas/mpt3sas_transport.c
++++ b/drivers/scsi/mpt3sas/mpt3sas_transport.c
+@@ -1936,12 +1936,12 @@ _transport_smp_handler(struct bsg_job *job, struct Scsi_Host *shost,
+ 		pr_info(MPT3SAS_FMT "%s: host reset in progress!\n",
+ 		    __func__, ioc->name);
+ 		rc = -EFAULT;
+-		goto out;
++		goto job_done;
+ 	}
+ 
+ 	rc = mutex_lock_interruptible(&ioc->transport_cmds.mutex);
+ 	if (rc)
+-		goto out;
++		goto job_done;
+ 
+ 	if (ioc->transport_cmds.status != MPT3_CMD_NOT_USED) {
+ 		pr_err(MPT3SAS_FMT "%s: transport_cmds in use\n", ioc->name,
+@@ -2066,6 +2066,7 @@ _transport_smp_handler(struct bsg_job *job, struct Scsi_Host *shost,
+  out:
+ 	ioc->transport_cmds.status = MPT3_CMD_NOT_USED;
+ 	mutex_unlock(&ioc->transport_cmds.mutex);
++job_done:
+ 	bsg_job_done(job, rc, reslen);
+ }
+ 
+diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
+index 40406c162d0d..8ce12ffcbb7a 100644
+--- a/drivers/scsi/scsi_sysfs.c
++++ b/drivers/scsi/scsi_sysfs.c
+@@ -721,8 +721,24 @@ static ssize_t
+ sdev_store_delete(struct device *dev, struct device_attribute *attr,
+ 		  const char *buf, size_t count)
+ {
+-	if (device_remove_file_self(dev, attr))
+-		scsi_remove_device(to_scsi_device(dev));
++	struct kernfs_node *kn;
++
++	kn = sysfs_break_active_protection(&dev->kobj, &attr->attr);
++	WARN_ON_ONCE(!kn);
++	/*
++	 * Concurrent writes into the "delete" sysfs attribute may trigger
++	 * concurrent calls to device_remove_file() and scsi_remove_device().
++	 * device_remove_file() handles concurrent removal calls by
++	 * serializing these and by ignoring the second and later removal
++	 * attempts.  Concurrent calls of scsi_remove_device() are
++	 * serialized. The second and later calls of scsi_remove_device() are
++	 * ignored because the first call of that function changes the device
++	 * state into SDEV_DEL.
++	 */
++	device_remove_file(dev, attr);
++	scsi_remove_device(to_scsi_device(dev));
++	if (kn)
++		sysfs_unbreak_active_protection(kn);
+ 	return count;
+ };
+ static DEVICE_ATTR(delete, S_IWUSR, NULL, sdev_store_delete);
+diff --git a/drivers/scsi/vmw_pvscsi.c b/drivers/scsi/vmw_pvscsi.c
+index 777e5f1e52d1..0cd947f78b5b 100644
+--- a/drivers/scsi/vmw_pvscsi.c
++++ b/drivers/scsi/vmw_pvscsi.c
+@@ -561,9 +561,14 @@ static void pvscsi_complete_request(struct pvscsi_adapter *adapter,
+ 	    (btstat == BTSTAT_SUCCESS ||
+ 	     btstat == BTSTAT_LINKED_COMMAND_COMPLETED ||
+ 	     btstat == BTSTAT_LINKED_COMMAND_COMPLETED_WITH_FLAG)) {
+-		cmd->result = (DID_OK << 16) | sdstat;
+-		if (sdstat == SAM_STAT_CHECK_CONDITION && cmd->sense_buffer)
+-			cmd->result |= (DRIVER_SENSE << 24);
++		if (sdstat == SAM_STAT_COMMAND_TERMINATED) {
++			cmd->result = (DID_RESET << 16);
++		} else {
++			cmd->result = (DID_OK << 16) | sdstat;
++			if (sdstat == SAM_STAT_CHECK_CONDITION &&
++			    cmd->sense_buffer)
++				cmd->result |= (DRIVER_SENSE << 24);
++		}
+ 	} else
+ 		switch (btstat) {
+ 		case BTSTAT_SUCCESS:
+diff --git a/drivers/staging/media/omap4iss/iss_video.c b/drivers/staging/media/omap4iss/iss_video.c
+index 9e2f0421a01e..0bf6643cca07 100644
+--- a/drivers/staging/media/omap4iss/iss_video.c
++++ b/drivers/staging/media/omap4iss/iss_video.c
+@@ -11,7 +11,6 @@
+  * (at your option) any later version.
+  */
+ 
+-#include <asm/cacheflush.h>
+ #include <linux/clk.h>
+ #include <linux/mm.h>
+ #include <linux/pagemap.h>
+@@ -24,6 +23,8 @@
+ #include <media/v4l2-ioctl.h>
+ #include <media/v4l2-mc.h>
+ 
++#include <asm/cacheflush.h>
++
+ #include "iss_video.h"
+ #include "iss.h"
+ 
+diff --git a/drivers/target/iscsi/cxgbit/cxgbit_target.c b/drivers/target/iscsi/cxgbit/cxgbit_target.c
+index 514986b57c2d..25eb3891e34b 100644
+--- a/drivers/target/iscsi/cxgbit/cxgbit_target.c
++++ b/drivers/target/iscsi/cxgbit/cxgbit_target.c
+@@ -652,6 +652,7 @@ static int cxgbit_set_iso_npdu(struct cxgbit_sock *csk)
+ 	struct iscsi_param *param;
+ 	u32 mrdsl, mbl;
+ 	u32 max_npdu, max_iso_npdu;
++	u32 max_iso_payload;
+ 
+ 	if (conn->login->leading_connection) {
+ 		param = iscsi_find_param_from_key(MAXBURSTLENGTH,
+@@ -670,8 +671,10 @@ static int cxgbit_set_iso_npdu(struct cxgbit_sock *csk)
+ 	mrdsl = conn_ops->MaxRecvDataSegmentLength;
+ 	max_npdu = mbl / mrdsl;
+ 
+-	max_iso_npdu = CXGBIT_MAX_ISO_PAYLOAD /
+-			(ISCSI_HDR_LEN + mrdsl +
++	max_iso_payload = rounddown(CXGBIT_MAX_ISO_PAYLOAD, csk->emss);
++
++	max_iso_npdu = max_iso_payload /
++		       (ISCSI_HDR_LEN + mrdsl +
+ 			cxgbit_digest_len[csk->submode]);
+ 
+ 	csk->max_iso_npdu = min(max_npdu, max_iso_npdu);
+@@ -741,6 +744,9 @@ static int cxgbit_set_params(struct iscsi_conn *conn)
+ 	if (conn_ops->MaxRecvDataSegmentLength > cdev->mdsl)
+ 		conn_ops->MaxRecvDataSegmentLength = cdev->mdsl;
+ 
++	if (cxgbit_set_digest(csk))
++		return -1;
++
+ 	if (conn->login->leading_connection) {
+ 		param = iscsi_find_param_from_key(ERRORRECOVERYLEVEL,
+ 						  conn->param_list);
+@@ -764,7 +770,7 @@ static int cxgbit_set_params(struct iscsi_conn *conn)
+ 			if (is_t5(cdev->lldi.adapter_type))
+ 				goto enable_ddp;
+ 			else
+-				goto enable_digest;
++				return 0;
+ 		}
+ 
+ 		if (test_bit(CDEV_ISO_ENABLE, &cdev->flags)) {
+@@ -781,10 +787,6 @@ enable_ddp:
+ 		}
+ 	}
+ 
+-enable_digest:
+-	if (cxgbit_set_digest(csk))
+-		return -1;
+-
+ 	return 0;
+ }
+ 
+diff --git a/drivers/target/iscsi/iscsi_target_login.c b/drivers/target/iscsi/iscsi_target_login.c
+index dc13afbd4c88..98e27da34f3c 100644
+--- a/drivers/target/iscsi/iscsi_target_login.c
++++ b/drivers/target/iscsi/iscsi_target_login.c
+@@ -345,8 +345,7 @@ static int iscsi_login_zero_tsih_s1(
+ 		pr_err("idr_alloc() for sess_idr failed\n");
+ 		iscsit_tx_login_rsp(conn, ISCSI_STATUS_CLS_TARGET_ERR,
+ 				ISCSI_LOGIN_STATUS_NO_RESOURCES);
+-		kfree(sess);
+-		return -ENOMEM;
++		goto free_sess;
+ 	}
+ 
+ 	sess->creation_time = get_jiffies_64();
+@@ -362,20 +361,28 @@ static int iscsi_login_zero_tsih_s1(
+ 				ISCSI_LOGIN_STATUS_NO_RESOURCES);
+ 		pr_err("Unable to allocate memory for"
+ 				" struct iscsi_sess_ops.\n");
+-		kfree(sess);
+-		return -ENOMEM;
++		goto remove_idr;
+ 	}
+ 
+ 	sess->se_sess = transport_init_session(TARGET_PROT_NORMAL);
+ 	if (IS_ERR(sess->se_sess)) {
+ 		iscsit_tx_login_rsp(conn, ISCSI_STATUS_CLS_TARGET_ERR,
+ 				ISCSI_LOGIN_STATUS_NO_RESOURCES);
+-		kfree(sess->sess_ops);
+-		kfree(sess);
+-		return -ENOMEM;
++		goto free_ops;
+ 	}
+ 
+ 	return 0;
++
++free_ops:
++	kfree(sess->sess_ops);
++remove_idr:
++	spin_lock_bh(&sess_idr_lock);
++	idr_remove(&sess_idr, sess->session_index);
++	spin_unlock_bh(&sess_idr_lock);
++free_sess:
++	kfree(sess);
++	conn->sess = NULL;
++	return -ENOMEM;
+ }
+ 
+ static int iscsi_login_zero_tsih_s2(
+@@ -1162,13 +1169,13 @@ void iscsi_target_login_sess_out(struct iscsi_conn *conn,
+ 				   ISCSI_LOGIN_STATUS_INIT_ERR);
+ 	if (!zero_tsih || !conn->sess)
+ 		goto old_sess_out;
+-	if (conn->sess->se_sess)
+-		transport_free_session(conn->sess->se_sess);
+-	if (conn->sess->session_index != 0) {
+-		spin_lock_bh(&sess_idr_lock);
+-		idr_remove(&sess_idr, conn->sess->session_index);
+-		spin_unlock_bh(&sess_idr_lock);
+-	}
++
++	transport_free_session(conn->sess->se_sess);
++
++	spin_lock_bh(&sess_idr_lock);
++	idr_remove(&sess_idr, conn->sess->session_index);
++	spin_unlock_bh(&sess_idr_lock);
++
+ 	kfree(conn->sess->sess_ops);
+ 	kfree(conn->sess);
+ 	conn->sess = NULL;
+diff --git a/drivers/usb/gadget/function/f_uac2.c b/drivers/usb/gadget/function/f_uac2.c
+index 97cb2dfd6369..d063f0401f84 100644
+--- a/drivers/usb/gadget/function/f_uac2.c
++++ b/drivers/usb/gadget/function/f_uac2.c
+@@ -442,14 +442,14 @@ static struct usb_descriptor_header *hs_audio_desc[] = {
+ };
+ 
+ struct cntrl_cur_lay3 {
+-	__u32	dCUR;
++	__le32	dCUR;
+ };
+ 
+ struct cntrl_range_lay3 {
+-	__u16	wNumSubRanges;
+-	__u32	dMIN;
+-	__u32	dMAX;
+-	__u32	dRES;
++	__le16	wNumSubRanges;
++	__le32	dMIN;
++	__le32	dMAX;
++	__le32	dRES;
+ } __packed;
+ 
+ static void set_ep_max_packet_size(const struct f_uac2_opts *uac2_opts,
+@@ -563,13 +563,13 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn)
+ 	agdev->out_ep = usb_ep_autoconfig(gadget, &fs_epout_desc);
+ 	if (!agdev->out_ep) {
+ 		dev_err(dev, "%s:%d Error!\n", __func__, __LINE__);
+-		return ret;
++		return -ENODEV;
+ 	}
+ 
+ 	agdev->in_ep = usb_ep_autoconfig(gadget, &fs_epin_desc);
+ 	if (!agdev->in_ep) {
+ 		dev_err(dev, "%s:%d Error!\n", __func__, __LINE__);
+-		return ret;
++		return -ENODEV;
+ 	}
+ 
+ 	agdev->in_ep_maxpsize = max_t(u16,
+@@ -707,9 +707,9 @@ in_rq_cur(struct usb_function *fn, const struct usb_ctrlrequest *cr)
+ 		memset(&c, 0, sizeof(struct cntrl_cur_lay3));
+ 
+ 		if (entity_id == USB_IN_CLK_ID)
+-			c.dCUR = p_srate;
++			c.dCUR = cpu_to_le32(p_srate);
+ 		else if (entity_id == USB_OUT_CLK_ID)
+-			c.dCUR = c_srate;
++			c.dCUR = cpu_to_le32(c_srate);
+ 
+ 		value = min_t(unsigned, w_length, sizeof c);
+ 		memcpy(req->buf, &c, value);
+@@ -746,15 +746,15 @@ in_rq_range(struct usb_function *fn, const struct usb_ctrlrequest *cr)
+ 
+ 	if (control_selector == UAC2_CS_CONTROL_SAM_FREQ) {
+ 		if (entity_id == USB_IN_CLK_ID)
+-			r.dMIN = p_srate;
++			r.dMIN = cpu_to_le32(p_srate);
+ 		else if (entity_id == USB_OUT_CLK_ID)
+-			r.dMIN = c_srate;
++			r.dMIN = cpu_to_le32(c_srate);
+ 		else
+ 			return -EOPNOTSUPP;
+ 
+ 		r.dMAX = r.dMIN;
+ 		r.dRES = 0;
+-		r.wNumSubRanges = 1;
++		r.wNumSubRanges = cpu_to_le16(1);
+ 
+ 		value = min_t(unsigned, w_length, sizeof r);
+ 		memcpy(req->buf, &r, value);
+diff --git a/drivers/usb/gadget/function/u_audio.c b/drivers/usb/gadget/function/u_audio.c
+index 3971bbab88bd..d3a639297e06 100644
+--- a/drivers/usb/gadget/function/u_audio.c
++++ b/drivers/usb/gadget/function/u_audio.c
+@@ -41,9 +41,6 @@ struct uac_req {
+ struct uac_rtd_params {
+ 	struct snd_uac_chip *uac; /* parent chip */
+ 	bool ep_enabled; /* if the ep is enabled */
+-	/* Size of the ring buffer */
+-	size_t dma_bytes;
+-	unsigned char *dma_area;
+ 
+ 	struct snd_pcm_substream *ss;
+ 
+@@ -52,8 +49,6 @@ struct uac_rtd_params {
+ 
+ 	void *rbuf;
+ 
+-	size_t period_size;
+-
+ 	unsigned max_psize;	/* MaxPacketSize of endpoint */
+ 	struct uac_req *ureq;
+ 
+@@ -93,12 +88,12 @@ static const struct snd_pcm_hardware uac_pcm_hardware = {
+ static void u_audio_iso_complete(struct usb_ep *ep, struct usb_request *req)
+ {
+ 	unsigned pending;
+-	unsigned long flags;
++	unsigned long flags, flags2;
+ 	unsigned int hw_ptr;
+-	bool update_alsa = false;
+ 	int status = req->status;
+ 	struct uac_req *ur = req->context;
+ 	struct snd_pcm_substream *substream;
++	struct snd_pcm_runtime *runtime;
+ 	struct uac_rtd_params *prm = ur->pp;
+ 	struct snd_uac_chip *uac = prm->uac;
+ 
+@@ -120,6 +115,14 @@ static void u_audio_iso_complete(struct usb_ep *ep, struct usb_request *req)
+ 	if (!substream)
+ 		goto exit;
+ 
++	snd_pcm_stream_lock_irqsave(substream, flags2);
++
++	runtime = substream->runtime;
++	if (!runtime || !snd_pcm_running(substream)) {
++		snd_pcm_stream_unlock_irqrestore(substream, flags2);
++		goto exit;
++	}
++
+ 	spin_lock_irqsave(&prm->lock, flags);
+ 
+ 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+@@ -146,43 +149,46 @@ static void u_audio_iso_complete(struct usb_ep *ep, struct usb_request *req)
+ 		req->actual = req->length;
+ 	}
+ 
+-	pending = prm->hw_ptr % prm->period_size;
+-	pending += req->actual;
+-	if (pending >= prm->period_size)
+-		update_alsa = true;
+-
+ 	hw_ptr = prm->hw_ptr;
+-	prm->hw_ptr = (prm->hw_ptr + req->actual) % prm->dma_bytes;
+ 
+ 	spin_unlock_irqrestore(&prm->lock, flags);
+ 
+ 	/* Pack USB load in ALSA ring buffer */
+-	pending = prm->dma_bytes - hw_ptr;
++	pending = runtime->dma_bytes - hw_ptr;
+ 
+ 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ 		if (unlikely(pending < req->actual)) {
+-			memcpy(req->buf, prm->dma_area + hw_ptr, pending);
+-			memcpy(req->buf + pending, prm->dma_area,
++			memcpy(req->buf, runtime->dma_area + hw_ptr, pending);
++			memcpy(req->buf + pending, runtime->dma_area,
+ 			       req->actual - pending);
+ 		} else {
+-			memcpy(req->buf, prm->dma_area + hw_ptr, req->actual);
++			memcpy(req->buf, runtime->dma_area + hw_ptr,
++			       req->actual);
+ 		}
+ 	} else {
+ 		if (unlikely(pending < req->actual)) {
+-			memcpy(prm->dma_area + hw_ptr, req->buf, pending);
+-			memcpy(prm->dma_area, req->buf + pending,
++			memcpy(runtime->dma_area + hw_ptr, req->buf, pending);
++			memcpy(runtime->dma_area, req->buf + pending,
+ 			       req->actual - pending);
+ 		} else {
+-			memcpy(prm->dma_area + hw_ptr, req->buf, req->actual);
++			memcpy(runtime->dma_area + hw_ptr, req->buf,
++			       req->actual);
+ 		}
+ 	}
+ 
++	spin_lock_irqsave(&prm->lock, flags);
++	/* update hw_ptr after data is copied to memory */
++	prm->hw_ptr = (hw_ptr + req->actual) % runtime->dma_bytes;
++	hw_ptr = prm->hw_ptr;
++	spin_unlock_irqrestore(&prm->lock, flags);
++	snd_pcm_stream_unlock_irqrestore(substream, flags2);
++
++	if ((hw_ptr % snd_pcm_lib_period_bytes(substream)) < req->actual)
++		snd_pcm_period_elapsed(substream);
++
+ exit:
+ 	if (usb_ep_queue(ep, req, GFP_ATOMIC))
+ 		dev_err(uac->card->dev, "%d Error!\n", __LINE__);
+-
+-	if (update_alsa)
+-		snd_pcm_period_elapsed(substream);
+ }
+ 
+ static int uac_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
+@@ -245,40 +251,12 @@ static snd_pcm_uframes_t uac_pcm_pointer(struct snd_pcm_substream *substream)
+ static int uac_pcm_hw_params(struct snd_pcm_substream *substream,
+ 			       struct snd_pcm_hw_params *hw_params)
+ {
+-	struct snd_uac_chip *uac = snd_pcm_substream_chip(substream);
+-	struct uac_rtd_params *prm;
+-	int err;
+-
+-	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+-		prm = &uac->p_prm;
+-	else
+-		prm = &uac->c_prm;
+-
+-	err = snd_pcm_lib_malloc_pages(substream,
++	return snd_pcm_lib_malloc_pages(substream,
+ 					params_buffer_bytes(hw_params));
+-	if (err >= 0) {
+-		prm->dma_bytes = substream->runtime->dma_bytes;
+-		prm->dma_area = substream->runtime->dma_area;
+-		prm->period_size = params_period_bytes(hw_params);
+-	}
+-
+-	return err;
+ }
+ 
+ static int uac_pcm_hw_free(struct snd_pcm_substream *substream)
+ {
+-	struct snd_uac_chip *uac = snd_pcm_substream_chip(substream);
+-	struct uac_rtd_params *prm;
+-
+-	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+-		prm = &uac->p_prm;
+-	else
+-		prm = &uac->c_prm;
+-
+-	prm->dma_area = NULL;
+-	prm->dma_bytes = 0;
+-	prm->period_size = 0;
+-
+ 	return snd_pcm_lib_free_pages(substream);
+ }
+ 
+@@ -604,15 +582,15 @@ int g_audio_setup(struct g_audio *g_audio, const char *pcm_name,
+ 	if (err < 0)
+ 		goto snd_fail;
+ 
+-	strcpy(pcm->name, pcm_name);
++	strlcpy(pcm->name, pcm_name, sizeof(pcm->name));
+ 	pcm->private_data = uac;
+ 	uac->pcm = pcm;
+ 
+ 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &uac_pcm_ops);
+ 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &uac_pcm_ops);
+ 
+-	strcpy(card->driver, card_name);
+-	strcpy(card->shortname, card_name);
++	strlcpy(card->driver, card_name, sizeof(card->driver));
++	strlcpy(card->shortname, card_name, sizeof(card->shortname));
+ 	sprintf(card->longname, "%s %i", card_name, card->dev->id);
+ 
+ 	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
+diff --git a/drivers/usb/gadget/udc/r8a66597-udc.c b/drivers/usb/gadget/udc/r8a66597-udc.c
+index 118ad70f1af0..84b227ede082 100644
+--- a/drivers/usb/gadget/udc/r8a66597-udc.c
++++ b/drivers/usb/gadget/udc/r8a66597-udc.c
+@@ -835,11 +835,11 @@ static void init_controller(struct r8a66597 *r8a66597)
+ 
+ 		r8a66597_bset(r8a66597, XCKE, SYSCFG0);
+ 
+-		msleep(3);
++		mdelay(3);
+ 
+ 		r8a66597_bset(r8a66597, PLLC, SYSCFG0);
+ 
+-		msleep(1);
++		mdelay(1);
+ 
+ 		r8a66597_bset(r8a66597, SCKE, SYSCFG0);
+ 
+@@ -1193,7 +1193,7 @@ __acquires(r8a66597->lock)
+ 	r8a66597->ep0_req->length = 2;
+ 	/* AV: what happens if we get called again before that gets through? */
+ 	spin_unlock(&r8a66597->lock);
+-	r8a66597_queue(r8a66597->gadget.ep0, r8a66597->ep0_req, GFP_KERNEL);
++	r8a66597_queue(r8a66597->gadget.ep0, r8a66597->ep0_req, GFP_ATOMIC);
+ 	spin_lock(&r8a66597->lock);
+ }
+ 
+diff --git a/drivers/usb/phy/phy-fsl-usb.c b/drivers/usb/phy/phy-fsl-usb.c
+index cf8f40ae6e01..9b4354a00ca7 100644
+--- a/drivers/usb/phy/phy-fsl-usb.c
++++ b/drivers/usb/phy/phy-fsl-usb.c
+@@ -874,6 +874,7 @@ int usb_otg_start(struct platform_device *pdev)
+ 	if (pdata->init && pdata->init(pdev) != 0)
+ 		return -EINVAL;
+ 
++#ifdef CONFIG_PPC32
+ 	if (pdata->big_endian_mmio) {
+ 		_fsl_readl = _fsl_readl_be;
+ 		_fsl_writel = _fsl_writel_be;
+@@ -881,6 +882,7 @@ int usb_otg_start(struct platform_device *pdev)
+ 		_fsl_readl = _fsl_readl_le;
+ 		_fsl_writel = _fsl_writel_le;
+ 	}
++#endif
+ 
+ 	/* request irq */
+ 	p_otg->irq = platform_get_irq(pdev, 0);
+@@ -971,7 +973,7 @@ int usb_otg_start(struct platform_device *pdev)
+ /*
+  * state file in sysfs
+  */
+-static int show_fsl_usb2_otg_state(struct device *dev,
++static ssize_t show_fsl_usb2_otg_state(struct device *dev,
+ 				   struct device_attribute *attr, char *buf)
+ {
+ 	struct otg_fsm *fsm = &fsl_otg_dev->fsm;
+diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
+index b475d1ebbbbf..5cf1bbe9754c 100644
+--- a/fs/btrfs/disk-io.c
++++ b/fs/btrfs/disk-io.c
+@@ -1098,8 +1098,9 @@ static int btree_writepages(struct address_space *mapping,
+ 
+ 		fs_info = BTRFS_I(mapping->host)->root->fs_info;
+ 		/* this is a bit racy, but that's ok */
+-		ret = percpu_counter_compare(&fs_info->dirty_metadata_bytes,
+-					     BTRFS_DIRTY_METADATA_THRESH);
++		ret = __percpu_counter_compare(&fs_info->dirty_metadata_bytes,
++					     BTRFS_DIRTY_METADATA_THRESH,
++					     fs_info->dirty_metadata_batch);
+ 		if (ret < 0)
+ 			return 0;
+ 	}
+@@ -4030,8 +4031,9 @@ static void __btrfs_btree_balance_dirty(struct btrfs_fs_info *fs_info,
+ 	if (flush_delayed)
+ 		btrfs_balance_delayed_items(fs_info);
+ 
+-	ret = percpu_counter_compare(&fs_info->dirty_metadata_bytes,
+-				     BTRFS_DIRTY_METADATA_THRESH);
++	ret = __percpu_counter_compare(&fs_info->dirty_metadata_bytes,
++				     BTRFS_DIRTY_METADATA_THRESH,
++				     fs_info->dirty_metadata_batch);
+ 	if (ret > 0) {
+ 		balance_dirty_pages_ratelimited(fs_info->btree_inode->i_mapping);
+ 	}
+diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
+index 53487102081d..bbabe37c2e8c 100644
+--- a/fs/btrfs/extent-tree.c
++++ b/fs/btrfs/extent-tree.c
+@@ -4407,7 +4407,7 @@ commit_trans:
+ 				      data_sinfo->flags, bytes, 1);
+ 	spin_unlock(&data_sinfo->lock);
+ 
+-	return ret;
++	return 0;
+ }
+ 
+ int btrfs_check_data_free_space(struct inode *inode,
+diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
+index 28a58f40f3a4..e8bfafa25a71 100644
+--- a/fs/btrfs/inode.c
++++ b/fs/btrfs/inode.c
+@@ -6152,32 +6152,6 @@ err:
+ 	return ret;
+ }
+ 
+-int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc)
+-{
+-	struct btrfs_root *root = BTRFS_I(inode)->root;
+-	struct btrfs_trans_handle *trans;
+-	int ret = 0;
+-	bool nolock = false;
+-
+-	if (test_bit(BTRFS_INODE_DUMMY, &BTRFS_I(inode)->runtime_flags))
+-		return 0;
+-
+-	if (btrfs_fs_closing(root->fs_info) &&
+-			btrfs_is_free_space_inode(BTRFS_I(inode)))
+-		nolock = true;
+-
+-	if (wbc->sync_mode == WB_SYNC_ALL) {
+-		if (nolock)
+-			trans = btrfs_join_transaction_nolock(root);
+-		else
+-			trans = btrfs_join_transaction(root);
+-		if (IS_ERR(trans))
+-			return PTR_ERR(trans);
+-		ret = btrfs_commit_transaction(trans);
+-	}
+-	return ret;
+-}
+-
+ /*
+  * This is somewhat expensive, updating the tree every time the
+  * inode changes.  But, it is most likely to find the inode in cache.
+diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
+index 8e3ce81d3f44..fe960d5e8913 100644
+--- a/fs/btrfs/super.c
++++ b/fs/btrfs/super.c
+@@ -2271,7 +2271,6 @@ static const struct super_operations btrfs_super_ops = {
+ 	.sync_fs	= btrfs_sync_fs,
+ 	.show_options	= btrfs_show_options,
+ 	.show_devname	= btrfs_show_devname,
+-	.write_inode	= btrfs_write_inode,
+ 	.alloc_inode	= btrfs_alloc_inode,
+ 	.destroy_inode	= btrfs_destroy_inode,
+ 	.statfs		= btrfs_statfs,
+diff --git a/fs/cachefiles/namei.c b/fs/cachefiles/namei.c
+index 3978b324cbca..5f2f67d220fa 100644
+--- a/fs/cachefiles/namei.c
++++ b/fs/cachefiles/namei.c
+@@ -195,7 +195,6 @@ wait_for_old_object:
+ 		pr_err("\n");
+ 		pr_err("Error: Unexpected object collision\n");
+ 		cachefiles_printk_object(object, xobject);
+-		BUG();
+ 	}
+ 	atomic_inc(&xobject->usage);
+ 	write_unlock(&cache->active_lock);
+diff --git a/fs/cachefiles/rdwr.c b/fs/cachefiles/rdwr.c
+index 18d7aa61ef0f..199eb396a1bb 100644
+--- a/fs/cachefiles/rdwr.c
++++ b/fs/cachefiles/rdwr.c
+@@ -27,6 +27,7 @@ static int cachefiles_read_waiter(wait_queue_entry_t *wait, unsigned mode,
+ 	struct cachefiles_one_read *monitor =
+ 		container_of(wait, struct cachefiles_one_read, monitor);
+ 	struct cachefiles_object *object;
++	struct fscache_retrieval *op = monitor->op;
+ 	struct wait_bit_key *key = _key;
+ 	struct page *page = wait->private;
+ 
+@@ -51,16 +52,22 @@ static int cachefiles_read_waiter(wait_queue_entry_t *wait, unsigned mode,
+ 	list_del(&wait->entry);
+ 
+ 	/* move onto the action list and queue for FS-Cache thread pool */
+-	ASSERT(monitor->op);
++	ASSERT(op);
+ 
+-	object = container_of(monitor->op->op.object,
+-			      struct cachefiles_object, fscache);
++	/* We need to temporarily bump the usage count as we don't own a ref
++	 * here otherwise cachefiles_read_copier() may free the op between the
++	 * monitor being enqueued on the op->to_do list and the op getting
++	 * enqueued on the work queue.
++	 */
++	fscache_get_retrieval(op);
+ 
++	object = container_of(op->op.object, struct cachefiles_object, fscache);
+ 	spin_lock(&object->work_lock);
+-	list_add_tail(&monitor->op_link, &monitor->op->to_do);
++	list_add_tail(&monitor->op_link, &op->to_do);
+ 	spin_unlock(&object->work_lock);
+ 
+-	fscache_enqueue_retrieval(monitor->op);
++	fscache_enqueue_retrieval(op);
++	fscache_put_retrieval(op);
+ 	return 0;
+ }
+ 
+diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c
+index cbb9534b89b4..53c9c49f0fbb 100644
+--- a/fs/cifs/cifs_debug.c
++++ b/fs/cifs/cifs_debug.c
+@@ -123,25 +123,41 @@ static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
+ 	seq_printf(m, "CIFS Version %s\n", CIFS_VERSION);
+ 	seq_printf(m, "Features:");
+ #ifdef CONFIG_CIFS_DFS_UPCALL
+-	seq_printf(m, " dfs");
++	seq_printf(m, " DFS");
+ #endif
+ #ifdef CONFIG_CIFS_FSCACHE
+-	seq_printf(m, " fscache");
++	seq_printf(m, ",FSCACHE");
++#endif
++#ifdef CONFIG_CIFS_SMB_DIRECT
++	seq_printf(m, ",SMB_DIRECT");
++#endif
++#ifdef CONFIG_CIFS_STATS2
++	seq_printf(m, ",STATS2");
++#elif defined(CONFIG_CIFS_STATS)
++	seq_printf(m, ",STATS");
++#endif
++#ifdef CONFIG_CIFS_DEBUG2
++	seq_printf(m, ",DEBUG2");
++#elif defined(CONFIG_CIFS_DEBUG)
++	seq_printf(m, ",DEBUG");
++#endif
++#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
++	seq_printf(m, ",ALLOW_INSECURE_LEGACY");
+ #endif
+ #ifdef CONFIG_CIFS_WEAK_PW_HASH
+-	seq_printf(m, " lanman");
++	seq_printf(m, ",WEAK_PW_HASH");
+ #endif
+ #ifdef CONFIG_CIFS_POSIX
+-	seq_printf(m, " posix");
++	seq_printf(m, ",CIFS_POSIX");
+ #endif
+ #ifdef CONFIG_CIFS_UPCALL
+-	seq_printf(m, " spnego");
++	seq_printf(m, ",UPCALL(SPNEGO)");
+ #endif
+ #ifdef CONFIG_CIFS_XATTR
+-	seq_printf(m, " xattr");
++	seq_printf(m, ",XATTR");
+ #endif
+ #ifdef CONFIG_CIFS_ACL
+-	seq_printf(m, " acl");
++	seq_printf(m, ",ACL");
+ #endif
+ 	seq_putc(m, '\n');
+ 	seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid);
+diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
+index 490c5fc9e69c..44a7b2dea688 100644
+--- a/fs/cifs/cifsfs.c
++++ b/fs/cifs/cifsfs.c
+@@ -197,14 +197,16 @@ cifs_statfs(struct dentry *dentry, struct kstatfs *buf)
+ 
+ 	xid = get_xid();
+ 
+-	/*
+-	 * PATH_MAX may be too long - it would presumably be total path,
+-	 * but note that some servers (includinng Samba 3) have a shorter
+-	 * maximum path.
+-	 *
+-	 * Instead could get the real value via SMB_QUERY_FS_ATTRIBUTE_INFO.
+-	 */
+-	buf->f_namelen = PATH_MAX;
++	if (le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength) > 0)
++		buf->f_namelen =
++		       le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength);
++	else
++		buf->f_namelen = PATH_MAX;
++
++	buf->f_fsid.val[0] = tcon->vol_serial_number;
++	/* are using part of create time for more randomness, see man statfs */
++	buf->f_fsid.val[1] =  (int)le64_to_cpu(tcon->vol_create_time);
++
+ 	buf->f_files = 0;	/* undefined */
+ 	buf->f_ffree = 0;	/* unlimited */
+ 
+diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
+index 0c7b7e2a0919..caf9cf91b825 100644
+--- a/fs/cifs/inode.c
++++ b/fs/cifs/inode.c
+@@ -1122,6 +1122,8 @@ cifs_set_file_info(struct inode *inode, struct iattr *attrs, unsigned int xid,
+ 	if (!server->ops->set_file_info)
+ 		return -ENOSYS;
+ 
++	info_buf.Pad = 0;
++
+ 	if (attrs->ia_valid & ATTR_ATIME) {
+ 		set_time = true;
+ 		info_buf.LastAccessTime =
+diff --git a/fs/cifs/link.c b/fs/cifs/link.c
+index 889a840172eb..9451a7f6893d 100644
+--- a/fs/cifs/link.c
++++ b/fs/cifs/link.c
+@@ -396,7 +396,7 @@ smb3_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
+ 	struct cifs_io_parms io_parms;
+ 	int buf_type = CIFS_NO_BUFFER;
+ 	__le16 *utf16_path;
+-	__u8 oplock = SMB2_OPLOCK_LEVEL_II;
++	__u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
+ 	struct smb2_file_all_info *pfile_info = NULL;
+ 
+ 	oparms.tcon = tcon;
+@@ -458,7 +458,7 @@ smb3_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
+ 	struct cifs_io_parms io_parms;
+ 	int create_options = CREATE_NOT_DIR;
+ 	__le16 *utf16_path;
+-	__u8 oplock = SMB2_OPLOCK_LEVEL_EXCLUSIVE;
++	__u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
+ 	struct kvec iov[2];
+ 
+ 	if (backup_cred(cifs_sb))
+diff --git a/fs/cifs/sess.c b/fs/cifs/sess.c
+index 8b0502cd39af..aa23c00367ec 100644
+--- a/fs/cifs/sess.c
++++ b/fs/cifs/sess.c
+@@ -398,6 +398,12 @@ int build_ntlmssp_auth_blob(unsigned char **pbuffer,
+ 		goto setup_ntlmv2_ret;
+ 	}
+ 	*pbuffer = kmalloc(size_of_ntlmssp_blob(ses), GFP_KERNEL);
++	if (!*pbuffer) {
++		rc = -ENOMEM;
++		cifs_dbg(VFS, "Error %d during NTLMSSP allocation\n", rc);
++		*buflen = 0;
++		goto setup_ntlmv2_ret;
++	}
+ 	sec_blob = (AUTHENTICATE_MESSAGE *)*pbuffer;
+ 
+ 	memcpy(sec_blob->Signature, NTLMSSP_SIGNATURE, 8);
+diff --git a/fs/cifs/smb2inode.c b/fs/cifs/smb2inode.c
+index 1238cd3552f9..0267d8cbc996 100644
+--- a/fs/cifs/smb2inode.c
++++ b/fs/cifs/smb2inode.c
+@@ -267,7 +267,7 @@ smb2_set_file_info(struct inode *inode, const char *full_path,
+ 	int rc;
+ 
+ 	if ((buf->CreationTime == 0) && (buf->LastAccessTime == 0) &&
+-	    (buf->LastWriteTime == 0) && (buf->ChangeTime) &&
++	    (buf->LastWriteTime == 0) && (buf->ChangeTime == 0) &&
+ 	    (buf->Attributes == 0))
+ 		return 0; /* would be a no op, no sense sending this */
+ 
+diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
+index 83267ac3a3f0..e9f246fe9d80 100644
+--- a/fs/cifs/smb2ops.c
++++ b/fs/cifs/smb2ops.c
+@@ -332,6 +332,8 @@ smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
+ 			FS_ATTRIBUTE_INFORMATION);
+ 	SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
+ 			FS_DEVICE_INFORMATION);
++	SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
++			FS_VOLUME_INFORMATION);
+ 	SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
+ 			FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */
+ 	SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
+@@ -1129,6 +1131,13 @@ smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon,
+ 
+ }
+ 
++/* GMT Token is @GMT-YYYY.MM.DD-HH.MM.SS Unicode which is 48 bytes + null */
++#define GMT_TOKEN_SIZE 50
++
++/*
++ * Input buffer contains (empty) struct smb_snapshot array with size filled in
++ * For output see struct SRV_SNAPSHOT_ARRAY in MS-SMB2 section 2.2.32.2
++ */
+ static int
+ smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
+ 		   struct cifsFileInfo *cfile, void __user *ioc_buf)
+@@ -1158,14 +1167,27 @@ smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
+ 			kfree(retbuf);
+ 			return rc;
+ 		}
+-		if (snapshot_in.snapshot_array_size < sizeof(struct smb_snapshot_array)) {
+-			rc = -ERANGE;
+-			kfree(retbuf);
+-			return rc;
+-		}
+ 
+-		if (ret_data_len > snapshot_in.snapshot_array_size)
+-			ret_data_len = snapshot_in.snapshot_array_size;
++		/*
++		 * Check for min size, ie not large enough to fit even one GMT
++		 * token (snapshot).  On the first ioctl some users may pass in
++		 * smaller size (or zero) to simply get the size of the array
++		 * so the user space caller can allocate sufficient memory
++		 * and retry the ioctl again with larger array size sufficient
++		 * to hold all of the snapshot GMT tokens on the second try.
++		 */
++		if (snapshot_in.snapshot_array_size < GMT_TOKEN_SIZE)
++			ret_data_len = sizeof(struct smb_snapshot_array);
++
++		/*
++		 * We return struct SRV_SNAPSHOT_ARRAY, followed by
++		 * the snapshot array (of 50 byte GMT tokens) each
++		 * representing an available previous version of the data
++		 */
++		if (ret_data_len > (snapshot_in.snapshot_array_size +
++					sizeof(struct smb_snapshot_array)))
++			ret_data_len = snapshot_in.snapshot_array_size +
++					sizeof(struct smb_snapshot_array);
+ 
+ 		if (copy_to_user(ioc_buf, retbuf, ret_data_len))
+ 			rc = -EFAULT;
+diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
+index 71b81980787f..e317e9a400c1 100644
+--- a/fs/cifs/smb2pdu.c
++++ b/fs/cifs/smb2pdu.c
+@@ -3455,6 +3455,9 @@ SMB2_QFS_attr(const unsigned int xid, struct cifs_tcon *tcon,
+ 	} else if (level == FS_SECTOR_SIZE_INFORMATION) {
+ 		max_len = sizeof(struct smb3_fs_ss_info);
+ 		min_len = sizeof(struct smb3_fs_ss_info);
++	} else if (level == FS_VOLUME_INFORMATION) {
++		max_len = sizeof(struct smb3_fs_vol_info) + MAX_VOL_LABEL_LEN;
++		min_len = sizeof(struct smb3_fs_vol_info);
+ 	} else {
+ 		cifs_dbg(FYI, "Invalid qfsinfo level %d\n", level);
+ 		return -EINVAL;
+@@ -3495,6 +3498,11 @@ SMB2_QFS_attr(const unsigned int xid, struct cifs_tcon *tcon,
+ 		tcon->ss_flags = le32_to_cpu(ss_info->Flags);
+ 		tcon->perf_sector_size =
+ 			le32_to_cpu(ss_info->PhysicalBytesPerSectorForPerf);
++	} else if (level == FS_VOLUME_INFORMATION) {
++		struct smb3_fs_vol_info *vol_info = (struct smb3_fs_vol_info *)
++			(offset + (char *)rsp);
++		tcon->vol_serial_number = vol_info->VolumeSerialNumber;
++		tcon->vol_create_time = vol_info->VolumeCreationTime;
+ 	}
+ 
+ qfsattr_exit:
+diff --git a/fs/cifs/smb2pdu.h b/fs/cifs/smb2pdu.h
+index c2ec934be968..e52454059725 100644
+--- a/fs/cifs/smb2pdu.h
++++ b/fs/cifs/smb2pdu.h
+@@ -1108,6 +1108,17 @@ struct smb3_fs_ss_info {
+ 	__le32 ByteOffsetForPartitionAlignment;
+ } __packed;
+ 
++/* volume info struct - see MS-FSCC 2.5.9 */
++#define MAX_VOL_LABEL_LEN	32
++struct smb3_fs_vol_info {
++	__le64	VolumeCreationTime;
++	__u32	VolumeSerialNumber;
++	__le32	VolumeLabelLength; /* includes trailing null */
++	__u8	SupportsObjects; /* True if eg like NTFS, supports objects */
++	__u8	Reserved;
++	__u8	VolumeLabel[0]; /* variable len */
++} __packed;
++
+ /* partial list of QUERY INFO levels */
+ #define FILE_DIRECTORY_INFORMATION	1
+ #define FILE_FULL_DIRECTORY_INFORMATION 2
+diff --git a/fs/ext4/mmp.c b/fs/ext4/mmp.c
+index 27b9a76a0dfa..638ad4743477 100644
+--- a/fs/ext4/mmp.c
++++ b/fs/ext4/mmp.c
+@@ -186,11 +186,8 @@ static int kmmpd(void *data)
+ 			goto exit_thread;
+ 		}
+ 
+-		if (sb_rdonly(sb)) {
+-			ext4_warning(sb, "kmmpd being stopped since filesystem "
+-				     "has been remounted as readonly.");
+-			goto exit_thread;
+-		}
++		if (sb_rdonly(sb))
++			break;
+ 
+ 		diff = jiffies - last_update_time;
+ 		if (diff < mmp_update_interval * HZ)
+diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
+index 6747861f9b70..1db39e12e02b 100644
+--- a/fs/ext4/namei.c
++++ b/fs/ext4/namei.c
+@@ -1397,6 +1397,7 @@ static struct buffer_head * ext4_find_entry (struct inode *dir,
+ 			goto cleanup_and_exit;
+ 		dxtrace(printk(KERN_DEBUG "ext4_find_entry: dx failed, "
+ 			       "falling back\n"));
++		ret = NULL;
+ 	}
+ 	nblocks = dir->i_size >> EXT4_BLOCK_SIZE_BITS(sb);
+ 	if (!nblocks) {
+diff --git a/fs/ext4/super.c b/fs/ext4/super.c
+index f30d2bf40471..b4fb085261fd 100644
+--- a/fs/ext4/super.c
++++ b/fs/ext4/super.c
+@@ -5163,6 +5163,8 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
+ 
+ 			if (sbi->s_journal)
+ 				ext4_mark_recovery_complete(sb, es);
++			if (sbi->s_mmp_tsk)
++				kthread_stop(sbi->s_mmp_tsk);
+ 		} else {
+ 			/* Make sure we can mount this feature set readwrite */
+ 			if (ext4_has_feature_readonly(sb) ||
+diff --git a/fs/ext4/sysfs.c b/fs/ext4/sysfs.c
+index e21afd52e7d7..bdfc2a2de8f2 100644
+--- a/fs/ext4/sysfs.c
++++ b/fs/ext4/sysfs.c
+@@ -278,8 +278,12 @@ static ssize_t ext4_attr_show(struct kobject *kobj,
+ 	case attr_pointer_ui:
+ 		if (!ptr)
+ 			return 0;
+-		return snprintf(buf, PAGE_SIZE, "%u\n",
+-				*((unsigned int *) ptr));
++		if (a->attr_ptr == ptr_ext4_super_block_offset)
++			return snprintf(buf, PAGE_SIZE, "%u\n",
++					le32_to_cpup(ptr));
++		else
++			return snprintf(buf, PAGE_SIZE, "%u\n",
++					*((unsigned int *) ptr));
+ 	case attr_pointer_atomic:
+ 		if (!ptr)
+ 			return 0;
+@@ -312,7 +316,10 @@ static ssize_t ext4_attr_store(struct kobject *kobj,
+ 		ret = kstrtoul(skip_spaces(buf), 0, &t);
+ 		if (ret)
+ 			return ret;
+-		*((unsigned int *) ptr) = t;
++		if (a->attr_ptr == ptr_ext4_super_block_offset)
++			*((__le32 *) ptr) = cpu_to_le32(t);
++		else
++			*((unsigned int *) ptr) = t;
+ 		return len;
+ 	case attr_inode_readahead:
+ 		return inode_readahead_blks_store(a, sbi, buf, len);
+diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
+index c7c8c16ccd93..9bc50eef6127 100644
+--- a/fs/ext4/xattr.c
++++ b/fs/ext4/xattr.c
+@@ -189,6 +189,8 @@ ext4_xattr_check_entries(struct ext4_xattr_entry *entry, void *end,
+ 		struct ext4_xattr_entry *next = EXT4_XATTR_NEXT(e);
+ 		if ((void *)next >= end)
+ 			return -EFSCORRUPTED;
++		if (strnlen(e->e_name, e->e_name_len) != e->e_name_len)
++			return -EFSCORRUPTED;
+ 		e = next;
+ 	}
+ 
+diff --git a/fs/fscache/operation.c b/fs/fscache/operation.c
+index de67745e1cd7..77946d6f617d 100644
+--- a/fs/fscache/operation.c
++++ b/fs/fscache/operation.c
+@@ -66,7 +66,8 @@ void fscache_enqueue_operation(struct fscache_operation *op)
+ 	ASSERT(op->processor != NULL);
+ 	ASSERT(fscache_object_is_available(op->object));
+ 	ASSERTCMP(atomic_read(&op->usage), >, 0);
+-	ASSERTCMP(op->state, ==, FSCACHE_OP_ST_IN_PROGRESS);
++	ASSERTIFCMP(op->state != FSCACHE_OP_ST_IN_PROGRESS,
++		    op->state, ==,  FSCACHE_OP_ST_CANCELLED);
+ 
+ 	fscache_stat(&fscache_n_op_enqueue);
+ 	switch (op->flags & FSCACHE_OP_TYPE) {
+@@ -481,7 +482,8 @@ void fscache_put_operation(struct fscache_operation *op)
+ 	struct fscache_cache *cache;
+ 
+ 	_enter("{OBJ%x OP%x,%d}",
+-	       op->object->debug_id, op->debug_id, atomic_read(&op->usage));
++	       op->object ? op->object->debug_id : 0,
++	       op->debug_id, atomic_read(&op->usage));
+ 
+ 	ASSERTCMP(atomic_read(&op->usage), >, 0);
+ 
+diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
+index 261fd13a75c6..ee8105af4001 100644
+--- a/fs/fuse/dev.c
++++ b/fs/fuse/dev.c
+@@ -131,6 +131,16 @@ static bool fuse_block_alloc(struct fuse_conn *fc, bool for_background)
+ 	return !fc->initialized || (for_background && fc->blocked);
+ }
+ 
++static void fuse_drop_waiting(struct fuse_conn *fc)
++{
++	if (fc->connected) {
++		atomic_dec(&fc->num_waiting);
++	} else if (atomic_dec_and_test(&fc->num_waiting)) {
++		/* wake up aborters */
++		wake_up_all(&fc->blocked_waitq);
++	}
++}
++
+ static struct fuse_req *__fuse_get_req(struct fuse_conn *fc, unsigned npages,
+ 				       bool for_background)
+ {
+@@ -171,7 +181,7 @@ static struct fuse_req *__fuse_get_req(struct fuse_conn *fc, unsigned npages,
+ 	return req;
+ 
+  out:
+-	atomic_dec(&fc->num_waiting);
++	fuse_drop_waiting(fc);
+ 	return ERR_PTR(err);
+ }
+ 
+@@ -278,7 +288,7 @@ void fuse_put_request(struct fuse_conn *fc, struct fuse_req *req)
+ 
+ 		if (test_bit(FR_WAITING, &req->flags)) {
+ 			__clear_bit(FR_WAITING, &req->flags);
+-			atomic_dec(&fc->num_waiting);
++			fuse_drop_waiting(fc);
+ 		}
+ 
+ 		if (req->stolen_file)
+@@ -364,7 +374,7 @@ static void request_end(struct fuse_conn *fc, struct fuse_req *req)
+ 	struct fuse_iqueue *fiq = &fc->iq;
+ 
+ 	if (test_and_set_bit(FR_FINISHED, &req->flags))
+-		return;
++		goto put_request;
+ 
+ 	spin_lock(&fiq->waitq.lock);
+ 	list_del_init(&req->intr_entry);
+@@ -393,6 +403,7 @@ static void request_end(struct fuse_conn *fc, struct fuse_req *req)
+ 	wake_up(&req->waitq);
+ 	if (req->end)
+ 		req->end(fc, req);
++put_request:
+ 	fuse_put_request(fc, req);
+ }
+ 
+@@ -1941,11 +1952,14 @@ static ssize_t fuse_dev_splice_write(struct pipe_inode_info *pipe,
+ 	if (!fud)
+ 		return -EPERM;
+ 
++	pipe_lock(pipe);
++
+ 	bufs = kmalloc(pipe->buffers * sizeof(struct pipe_buffer), GFP_KERNEL);
+-	if (!bufs)
++	if (!bufs) {
++		pipe_unlock(pipe);
+ 		return -ENOMEM;
++	}
+ 
+-	pipe_lock(pipe);
+ 	nbuf = 0;
+ 	rem = 0;
+ 	for (idx = 0; idx < pipe->nrbufs && rem < len; idx++)
+@@ -2100,6 +2114,7 @@ void fuse_abort_conn(struct fuse_conn *fc)
+ 				set_bit(FR_ABORTED, &req->flags);
+ 				if (!test_bit(FR_LOCKED, &req->flags)) {
+ 					set_bit(FR_PRIVATE, &req->flags);
++					__fuse_get_request(req);
+ 					list_move(&req->list, &to_end1);
+ 				}
+ 				spin_unlock(&req->waitq.lock);
+@@ -2126,7 +2141,6 @@ void fuse_abort_conn(struct fuse_conn *fc)
+ 
+ 		while (!list_empty(&to_end1)) {
+ 			req = list_first_entry(&to_end1, struct fuse_req, list);
+-			__fuse_get_request(req);
+ 			list_del_init(&req->list);
+ 			request_end(fc, req);
+ 		}
+@@ -2137,6 +2151,11 @@ void fuse_abort_conn(struct fuse_conn *fc)
+ }
+ EXPORT_SYMBOL_GPL(fuse_abort_conn);
+ 
++void fuse_wait_aborted(struct fuse_conn *fc)
++{
++	wait_event(fc->blocked_waitq, atomic_read(&fc->num_waiting) == 0);
++}
++
+ int fuse_dev_release(struct inode *inode, struct file *file)
+ {
+ 	struct fuse_dev *fud = fuse_get_dev(file);
+@@ -2144,9 +2163,15 @@ int fuse_dev_release(struct inode *inode, struct file *file)
+ 	if (fud) {
+ 		struct fuse_conn *fc = fud->fc;
+ 		struct fuse_pqueue *fpq = &fud->pq;
++		LIST_HEAD(to_end);
+ 
++		spin_lock(&fpq->lock);
+ 		WARN_ON(!list_empty(&fpq->io));
+-		end_requests(fc, &fpq->processing);
++		list_splice_init(&fpq->processing, &to_end);
++		spin_unlock(&fpq->lock);
++
++		end_requests(fc, &to_end);
++
+ 		/* Are we the last open device? */
+ 		if (atomic_dec_and_test(&fc->dev_count)) {
+ 			WARN_ON(fc->iq.fasync != NULL);
+diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
+index 7a980b4462d9..29868c35c19a 100644
+--- a/fs/fuse/dir.c
++++ b/fs/fuse/dir.c
+@@ -355,11 +355,12 @@ static struct dentry *fuse_lookup(struct inode *dir, struct dentry *entry,
+ 	struct inode *inode;
+ 	struct dentry *newent;
+ 	bool outarg_valid = true;
++	bool locked;
+ 
+-	fuse_lock_inode(dir);
++	locked = fuse_lock_inode(dir);
+ 	err = fuse_lookup_name(dir->i_sb, get_node_id(dir), &entry->d_name,
+ 			       &outarg, &inode);
+-	fuse_unlock_inode(dir);
++	fuse_unlock_inode(dir, locked);
+ 	if (err == -ENOENT) {
+ 		outarg_valid = false;
+ 		err = 0;
+@@ -1332,6 +1333,7 @@ static int fuse_readdir(struct file *file, struct dir_context *ctx)
+ 	struct fuse_conn *fc = get_fuse_conn(inode);
+ 	struct fuse_req *req;
+ 	u64 attr_version = 0;
++	bool locked;
+ 
+ 	if (is_bad_inode(inode))
+ 		return -EIO;
+@@ -1359,9 +1361,9 @@ static int fuse_readdir(struct file *file, struct dir_context *ctx)
+ 		fuse_read_fill(req, file, ctx->pos, PAGE_SIZE,
+ 			       FUSE_READDIR);
+ 	}
+-	fuse_lock_inode(inode);
++	locked = fuse_lock_inode(inode);
+ 	fuse_request_send(fc, req);
+-	fuse_unlock_inode(inode);
++	fuse_unlock_inode(inode, locked);
+ 	nbytes = req->out.args[0].size;
+ 	err = req->out.h.error;
+ 	fuse_put_request(fc, req);
+diff --git a/fs/fuse/file.c b/fs/fuse/file.c
+index cb7dff5c45d7..fb4738ef162f 100644
+--- a/fs/fuse/file.c
++++ b/fs/fuse/file.c
+@@ -866,6 +866,7 @@ static int fuse_readpages_fill(void *_data, struct page *page)
+ 	}
+ 
+ 	if (WARN_ON(req->num_pages >= req->max_pages)) {
++		unlock_page(page);
+ 		fuse_put_request(fc, req);
+ 		return -EIO;
+ 	}
+diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
+index d5773ca67ad2..e105640153ce 100644
+--- a/fs/fuse/fuse_i.h
++++ b/fs/fuse/fuse_i.h
+@@ -852,6 +852,7 @@ void fuse_request_send_background_locked(struct fuse_conn *fc,
+ 
+ /* Abort all requests */
+ void fuse_abort_conn(struct fuse_conn *fc);
++void fuse_wait_aborted(struct fuse_conn *fc);
+ 
+ /**
+  * Invalidate inode attributes
+@@ -964,8 +965,8 @@ int fuse_do_setattr(struct dentry *dentry, struct iattr *attr,
+ 
+ void fuse_set_initialized(struct fuse_conn *fc);
+ 
+-void fuse_unlock_inode(struct inode *inode);
+-void fuse_lock_inode(struct inode *inode);
++void fuse_unlock_inode(struct inode *inode, bool locked);
++bool fuse_lock_inode(struct inode *inode);
+ 
+ int fuse_setxattr(struct inode *inode, const char *name, const void *value,
+ 		  size_t size, int flags);
+diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
+index a13ecefa9cd1..ffb61787d77a 100644
+--- a/fs/fuse/inode.c
++++ b/fs/fuse/inode.c
+@@ -357,15 +357,21 @@ int fuse_reverse_inval_inode(struct super_block *sb, u64 nodeid,
+ 	return 0;
+ }
+ 
+-void fuse_lock_inode(struct inode *inode)
++bool fuse_lock_inode(struct inode *inode)
+ {
+-	if (!get_fuse_conn(inode)->parallel_dirops)
++	bool locked = false;
++
++	if (!get_fuse_conn(inode)->parallel_dirops) {
+ 		mutex_lock(&get_fuse_inode(inode)->mutex);
++		locked = true;
++	}
++
++	return locked;
+ }
+ 
+-void fuse_unlock_inode(struct inode *inode)
++void fuse_unlock_inode(struct inode *inode, bool locked)
+ {
+-	if (!get_fuse_conn(inode)->parallel_dirops)
++	if (locked)
+ 		mutex_unlock(&get_fuse_inode(inode)->mutex);
+ }
+ 
+@@ -391,9 +397,6 @@ static void fuse_put_super(struct super_block *sb)
+ {
+ 	struct fuse_conn *fc = get_fuse_conn_super(sb);
+ 
+-	fuse_send_destroy(fc);
+-
+-	fuse_abort_conn(fc);
+ 	mutex_lock(&fuse_mutex);
+ 	list_del(&fc->entry);
+ 	fuse_ctl_remove_conn(fc);
+@@ -1190,16 +1193,25 @@ static struct dentry *fuse_mount(struct file_system_type *fs_type,
+ 	return mount_nodev(fs_type, flags, raw_data, fuse_fill_super);
+ }
+ 
+-static void fuse_kill_sb_anon(struct super_block *sb)
++static void fuse_sb_destroy(struct super_block *sb)
+ {
+ 	struct fuse_conn *fc = get_fuse_conn_super(sb);
+ 
+ 	if (fc) {
++		fuse_send_destroy(fc);
++
++		fuse_abort_conn(fc);
++		fuse_wait_aborted(fc);
++
+ 		down_write(&fc->killsb);
+ 		fc->sb = NULL;
+ 		up_write(&fc->killsb);
+ 	}
++}
+ 
++static void fuse_kill_sb_anon(struct super_block *sb)
++{
++	fuse_sb_destroy(sb);
+ 	kill_anon_super(sb);
+ }
+ 
+@@ -1222,14 +1234,7 @@ static struct dentry *fuse_mount_blk(struct file_system_type *fs_type,
+ 
+ static void fuse_kill_sb_blk(struct super_block *sb)
+ {
+-	struct fuse_conn *fc = get_fuse_conn_super(sb);
+-
+-	if (fc) {
+-		down_write(&fc->killsb);
+-		fc->sb = NULL;
+-		up_write(&fc->killsb);
+-	}
+-
++	fuse_sb_destroy(sb);
+ 	kill_block_super(sb);
+ }
+ 
+diff --git a/fs/squashfs/file.c b/fs/squashfs/file.c
+index fcff2e0487fe..f1c1430ae721 100644
+--- a/fs/squashfs/file.c
++++ b/fs/squashfs/file.c
+@@ -374,13 +374,29 @@ static int read_blocklist(struct inode *inode, int index, u64 *block)
+ 	return squashfs_block_size(size);
+ }
+ 
++void squashfs_fill_page(struct page *page, struct squashfs_cache_entry *buffer, int offset, int avail)
++{
++	int copied;
++	void *pageaddr;
++
++	pageaddr = kmap_atomic(page);
++	copied = squashfs_copy_data(pageaddr, buffer, offset, avail);
++	memset(pageaddr + copied, 0, PAGE_SIZE - copied);
++	kunmap_atomic(pageaddr);
++
++	flush_dcache_page(page);
++	if (copied == avail)
++		SetPageUptodate(page);
++	else
++		SetPageError(page);
++}
++
+ /* Copy data into page cache  */
+ void squashfs_copy_cache(struct page *page, struct squashfs_cache_entry *buffer,
+ 	int bytes, int offset)
+ {
+ 	struct inode *inode = page->mapping->host;
+ 	struct squashfs_sb_info *msblk = inode->i_sb->s_fs_info;
+-	void *pageaddr;
+ 	int i, mask = (1 << (msblk->block_log - PAGE_SHIFT)) - 1;
+ 	int start_index = page->index & ~mask, end_index = start_index | mask;
+ 
+@@ -406,12 +422,7 @@ void squashfs_copy_cache(struct page *page, struct squashfs_cache_entry *buffer,
+ 		if (PageUptodate(push_page))
+ 			goto skip_page;
+ 
+-		pageaddr = kmap_atomic(push_page);
+-		squashfs_copy_data(pageaddr, buffer, offset, avail);
+-		memset(pageaddr + avail, 0, PAGE_SIZE - avail);
+-		kunmap_atomic(pageaddr);
+-		flush_dcache_page(push_page);
+-		SetPageUptodate(push_page);
++		squashfs_fill_page(push_page, buffer, offset, avail);
+ skip_page:
+ 		unlock_page(push_page);
+ 		if (i != page->index)
+@@ -420,10 +431,9 @@ skip_page:
+ }
+ 
+ /* Read datablock stored packed inside a fragment (tail-end packed block) */
+-static int squashfs_readpage_fragment(struct page *page)
++static int squashfs_readpage_fragment(struct page *page, int expected)
+ {
+ 	struct inode *inode = page->mapping->host;
+-	struct squashfs_sb_info *msblk = inode->i_sb->s_fs_info;
+ 	struct squashfs_cache_entry *buffer = squashfs_get_fragment(inode->i_sb,
+ 		squashfs_i(inode)->fragment_block,
+ 		squashfs_i(inode)->fragment_size);
+@@ -434,23 +444,16 @@ static int squashfs_readpage_fragment(struct page *page)
+ 			squashfs_i(inode)->fragment_block,
+ 			squashfs_i(inode)->fragment_size);
+ 	else
+-		squashfs_copy_cache(page, buffer, i_size_read(inode) &
+-			(msblk->block_size - 1),
++		squashfs_copy_cache(page, buffer, expected,
+ 			squashfs_i(inode)->fragment_offset);
+ 
+ 	squashfs_cache_put(buffer);
+ 	return res;
+ }
+ 
+-static int squashfs_readpage_sparse(struct page *page, int index, int file_end)
++static int squashfs_readpage_sparse(struct page *page, int expected)
+ {
+-	struct inode *inode = page->mapping->host;
+-	struct squashfs_sb_info *msblk = inode->i_sb->s_fs_info;
+-	int bytes = index == file_end ?
+-			(i_size_read(inode) & (msblk->block_size - 1)) :
+-			 msblk->block_size;
+-
+-	squashfs_copy_cache(page, NULL, bytes, 0);
++	squashfs_copy_cache(page, NULL, expected, 0);
+ 	return 0;
+ }
+ 
+@@ -460,6 +463,9 @@ static int squashfs_readpage(struct file *file, struct page *page)
+ 	struct squashfs_sb_info *msblk = inode->i_sb->s_fs_info;
+ 	int index = page->index >> (msblk->block_log - PAGE_SHIFT);
+ 	int file_end = i_size_read(inode) >> msblk->block_log;
++	int expected = index == file_end ?
++			(i_size_read(inode) & (msblk->block_size - 1)) :
++			 msblk->block_size;
+ 	int res;
+ 	void *pageaddr;
+ 
+@@ -478,11 +484,11 @@ static int squashfs_readpage(struct file *file, struct page *page)
+ 			goto error_out;
+ 
+ 		if (bsize == 0)
+-			res = squashfs_readpage_sparse(page, index, file_end);
++			res = squashfs_readpage_sparse(page, expected);
+ 		else
+-			res = squashfs_readpage_block(page, block, bsize);
++			res = squashfs_readpage_block(page, block, bsize, expected);
+ 	} else
+-		res = squashfs_readpage_fragment(page);
++		res = squashfs_readpage_fragment(page, expected);
+ 
+ 	if (!res)
+ 		return 0;
+diff --git a/fs/squashfs/file_cache.c b/fs/squashfs/file_cache.c
+index f2310d2a2019..a9ba8d96776a 100644
+--- a/fs/squashfs/file_cache.c
++++ b/fs/squashfs/file_cache.c
+@@ -20,7 +20,7 @@
+ #include "squashfs.h"
+ 
+ /* Read separately compressed datablock and memcopy into page cache */
+-int squashfs_readpage_block(struct page *page, u64 block, int bsize)
++int squashfs_readpage_block(struct page *page, u64 block, int bsize, int expected)
+ {
+ 	struct inode *i = page->mapping->host;
+ 	struct squashfs_cache_entry *buffer = squashfs_get_datablock(i->i_sb,
+@@ -31,7 +31,7 @@ int squashfs_readpage_block(struct page *page, u64 block, int bsize)
+ 		ERROR("Unable to read page, block %llx, size %x\n", block,
+ 			bsize);
+ 	else
+-		squashfs_copy_cache(page, buffer, buffer->length, 0);
++		squashfs_copy_cache(page, buffer, expected, 0);
+ 
+ 	squashfs_cache_put(buffer);
+ 	return res;
+diff --git a/fs/squashfs/file_direct.c b/fs/squashfs/file_direct.c
+index cb485d8e0e91..80db1b86a27c 100644
+--- a/fs/squashfs/file_direct.c
++++ b/fs/squashfs/file_direct.c
+@@ -21,10 +21,11 @@
+ #include "page_actor.h"
+ 
+ static int squashfs_read_cache(struct page *target_page, u64 block, int bsize,
+-	int pages, struct page **page);
++	int pages, struct page **page, int bytes);
+ 
+ /* Read separately compressed datablock directly into page cache */
+-int squashfs_readpage_block(struct page *target_page, u64 block, int bsize)
++int squashfs_readpage_block(struct page *target_page, u64 block, int bsize,
++	int expected)
+ 
+ {
+ 	struct inode *inode = target_page->mapping->host;
+@@ -83,7 +84,7 @@ int squashfs_readpage_block(struct page *target_page, u64 block, int bsize)
+ 		 * using an intermediate buffer.
+ 		 */
+ 		res = squashfs_read_cache(target_page, block, bsize, pages,
+-								page);
++							page, expected);
+ 		if (res < 0)
+ 			goto mark_errored;
+ 
+@@ -95,6 +96,11 @@ int squashfs_readpage_block(struct page *target_page, u64 block, int bsize)
+ 	if (res < 0)
+ 		goto mark_errored;
+ 
++	if (res != expected) {
++		res = -EIO;
++		goto mark_errored;
++	}
++
+ 	/* Last page may have trailing bytes not filled */
+ 	bytes = res % PAGE_SIZE;
+ 	if (bytes) {
+@@ -138,13 +144,12 @@ out:
+ 
+ 
+ static int squashfs_read_cache(struct page *target_page, u64 block, int bsize,
+-	int pages, struct page **page)
++	int pages, struct page **page, int bytes)
+ {
+ 	struct inode *i = target_page->mapping->host;
+ 	struct squashfs_cache_entry *buffer = squashfs_get_datablock(i->i_sb,
+ 						 block, bsize);
+-	int bytes = buffer->length, res = buffer->error, n, offset = 0;
+-	void *pageaddr;
++	int res = buffer->error, n, offset = 0;
+ 
+ 	if (res) {
+ 		ERROR("Unable to read page, block %llx, size %x\n", block,
+@@ -159,12 +164,7 @@ static int squashfs_read_cache(struct page *target_page, u64 block, int bsize,
+ 		if (page[n] == NULL)
+ 			continue;
+ 
+-		pageaddr = kmap_atomic(page[n]);
+-		squashfs_copy_data(pageaddr, buffer, offset, avail);
+-		memset(pageaddr + avail, 0, PAGE_SIZE - avail);
+-		kunmap_atomic(pageaddr);
+-		flush_dcache_page(page[n]);
+-		SetPageUptodate(page[n]);
++		squashfs_fill_page(page[n], buffer, offset, avail);
+ 		unlock_page(page[n]);
+ 		if (page[n] != target_page)
+ 			put_page(page[n]);
+diff --git a/fs/squashfs/squashfs.h b/fs/squashfs/squashfs.h
+index 887d6d270080..f89f8a74c6ce 100644
+--- a/fs/squashfs/squashfs.h
++++ b/fs/squashfs/squashfs.h
+@@ -67,11 +67,12 @@ extern __le64 *squashfs_read_fragment_index_table(struct super_block *,
+ 				u64, u64, unsigned int);
+ 
+ /* file.c */
++void squashfs_fill_page(struct page *, struct squashfs_cache_entry *, int, int);
+ void squashfs_copy_cache(struct page *, struct squashfs_cache_entry *, int,
+ 				int);
+ 
+ /* file_xxx.c */
+-extern int squashfs_readpage_block(struct page *, u64, int);
++extern int squashfs_readpage_block(struct page *, u64, int, int);
+ 
+ /* id.c */
+ extern int squashfs_get_id(struct super_block *, unsigned int, unsigned int *);
+diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c
+index 39c75a86c67f..666986b95c5d 100644
+--- a/fs/sysfs/file.c
++++ b/fs/sysfs/file.c
+@@ -407,6 +407,50 @@ int sysfs_chmod_file(struct kobject *kobj, const struct attribute *attr,
+ }
+ EXPORT_SYMBOL_GPL(sysfs_chmod_file);
+ 
++/**
++ * sysfs_break_active_protection - break "active" protection
++ * @kobj: The kernel object @attr is associated with.
++ * @attr: The attribute to break the "active" protection for.
++ *
++ * With sysfs, just like kernfs, deletion of an attribute is postponed until
++ * all active .show() and .store() callbacks have finished unless this function
++ * is called. Hence this function is useful in methods that implement self
++ * deletion.
++ */
++struct kernfs_node *sysfs_break_active_protection(struct kobject *kobj,
++						  const struct attribute *attr)
++{
++	struct kernfs_node *kn;
++
++	kobject_get(kobj);
++	kn = kernfs_find_and_get(kobj->sd, attr->name);
++	if (kn)
++		kernfs_break_active_protection(kn);
++	return kn;
++}
++EXPORT_SYMBOL_GPL(sysfs_break_active_protection);
++
++/**
++ * sysfs_unbreak_active_protection - restore "active" protection
++ * @kn: Pointer returned by sysfs_break_active_protection().
++ *
++ * Undo the effects of sysfs_break_active_protection(). Since this function
++ * calls kernfs_put() on the kernfs node that corresponds to the 'attr'
++ * argument passed to sysfs_break_active_protection() that attribute may have
++ * been removed between the sysfs_break_active_protection() and
++ * sysfs_unbreak_active_protection() calls, it is not safe to access @kn after
++ * this function has returned.
++ */
++void sysfs_unbreak_active_protection(struct kernfs_node *kn)
++{
++	struct kobject *kobj = kn->parent->priv;
++
++	kernfs_unbreak_active_protection(kn);
++	kernfs_put(kn);
++	kobject_put(kobj);
++}
++EXPORT_SYMBOL_GPL(sysfs_unbreak_active_protection);
++
+ /**
+  * sysfs_remove_file_ns - remove an object attribute with a custom ns tag
+  * @kobj: object we're acting for
+diff --git a/include/linux/printk.h b/include/linux/printk.h
+index 335926039adc..6106befed756 100644
+--- a/include/linux/printk.h
++++ b/include/linux/printk.h
+@@ -150,9 +150,13 @@ void early_printk(const char *s, ...) { }
+ #ifdef CONFIG_PRINTK_NMI
+ extern void printk_nmi_enter(void);
+ extern void printk_nmi_exit(void);
++extern void printk_nmi_direct_enter(void);
++extern void printk_nmi_direct_exit(void);
+ #else
+ static inline void printk_nmi_enter(void) { }
+ static inline void printk_nmi_exit(void) { }
++static inline void printk_nmi_direct_enter(void) { }
++static inline void printk_nmi_direct_exit(void) { }
+ #endif /* PRINTK_NMI */
+ 
+ #ifdef CONFIG_PRINTK
+diff --git a/include/linux/rtmutex.h b/include/linux/rtmutex.h
+index 1b92a28dd672..6fd615a0eea9 100644
+--- a/include/linux/rtmutex.h
++++ b/include/linux/rtmutex.h
+@@ -106,7 +106,14 @@ static inline int rt_mutex_is_locked(struct rt_mutex *lock)
+ extern void __rt_mutex_init(struct rt_mutex *lock, const char *name, struct lock_class_key *key);
+ extern void rt_mutex_destroy(struct rt_mutex *lock);
+ 
++#ifdef CONFIG_DEBUG_LOCK_ALLOC
++extern void rt_mutex_lock_nested(struct rt_mutex *lock, unsigned int subclass);
++#define rt_mutex_lock(lock) rt_mutex_lock_nested(lock, 0)
++#else
+ extern void rt_mutex_lock(struct rt_mutex *lock);
++#define rt_mutex_lock_nested(lock, subclass) rt_mutex_lock(lock)
++#endif
++
+ extern int rt_mutex_lock_interruptible(struct rt_mutex *lock);
+ extern int rt_mutex_timed_lock(struct rt_mutex *lock,
+ 			       struct hrtimer_sleeper *timeout);
+diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h
+index 40839c02d28c..cca19bb200bd 100644
+--- a/include/linux/sysfs.h
++++ b/include/linux/sysfs.h
+@@ -239,6 +239,9 @@ int __must_check sysfs_create_files(struct kobject *kobj,
+ 				   const struct attribute **attr);
+ int __must_check sysfs_chmod_file(struct kobject *kobj,
+ 				  const struct attribute *attr, umode_t mode);
++struct kernfs_node *sysfs_break_active_protection(struct kobject *kobj,
++						  const struct attribute *attr);
++void sysfs_unbreak_active_protection(struct kernfs_node *kn);
+ void sysfs_remove_file_ns(struct kobject *kobj, const struct attribute *attr,
+ 			  const void *ns);
+ bool sysfs_remove_file_self(struct kobject *kobj, const struct attribute *attr);
+@@ -352,6 +355,17 @@ static inline int sysfs_chmod_file(struct kobject *kobj,
+ 	return 0;
+ }
+ 
++static inline struct kernfs_node *
++sysfs_break_active_protection(struct kobject *kobj,
++			      const struct attribute *attr)
++{
++	return NULL;
++}
++
++static inline void sysfs_unbreak_active_protection(struct kernfs_node *kn)
++{
++}
++
+ static inline void sysfs_remove_file_ns(struct kobject *kobj,
+ 					const struct attribute *attr,
+ 					const void *ns)
+diff --git a/ipc/sem.c b/ipc/sem.c
+index b2698ebdcb31..d6dd2dc9ddad 100644
+--- a/ipc/sem.c
++++ b/ipc/sem.c
+@@ -2041,7 +2041,7 @@ static long do_semtimedop(int semid, struct sembuf __user *tsops,
+ 	}
+ 
+ 	do {
+-		queue.status = -EINTR;
++		WRITE_ONCE(queue.status, -EINTR);
+ 		queue.sleeper = current;
+ 
+ 		__set_current_state(TASK_INTERRUPTIBLE);
+diff --git a/kernel/kprobes.c b/kernel/kprobes.c
+index a66e838640ea..5c90765d37e7 100644
+--- a/kernel/kprobes.c
++++ b/kernel/kprobes.c
+@@ -2531,7 +2531,7 @@ static int __init debugfs_kprobe_init(void)
+ 	if (!dir)
+ 		return -ENOMEM;
+ 
+-	file = debugfs_create_file("list", 0444, dir, NULL,
++	file = debugfs_create_file("list", 0400, dir, NULL,
+ 				&debugfs_kprobes_operations);
+ 	if (!file)
+ 		goto error;
+@@ -2541,7 +2541,7 @@ static int __init debugfs_kprobe_init(void)
+ 	if (!file)
+ 		goto error;
+ 
+-	file = debugfs_create_file("blacklist", 0444, dir, NULL,
++	file = debugfs_create_file("blacklist", 0400, dir, NULL,
+ 				&debugfs_kprobe_blacklist_ops);
+ 	if (!file)
+ 		goto error;
+diff --git a/kernel/locking/rtmutex.c b/kernel/locking/rtmutex.c
+index 65cc0cb984e6..4ad35718f123 100644
+--- a/kernel/locking/rtmutex.c
++++ b/kernel/locking/rtmutex.c
+@@ -1466,6 +1466,29 @@ rt_mutex_fastunlock(struct rt_mutex *lock,
+ 		rt_mutex_postunlock(&wake_q);
+ }
+ 
++static inline void __rt_mutex_lock(struct rt_mutex *lock, unsigned int subclass)
++{
++	might_sleep();
++
++	mutex_acquire(&lock->dep_map, subclass, 0, _RET_IP_);
++	rt_mutex_fastlock(lock, TASK_UNINTERRUPTIBLE, rt_mutex_slowlock);
++}
++
++#ifdef CONFIG_DEBUG_LOCK_ALLOC
++/**
++ * rt_mutex_lock_nested - lock a rt_mutex
++ *
++ * @lock: the rt_mutex to be locked
++ * @subclass: the lockdep subclass
++ */
++void __sched rt_mutex_lock_nested(struct rt_mutex *lock, unsigned int subclass)
++{
++	__rt_mutex_lock(lock, subclass);
++}
++EXPORT_SYMBOL_GPL(rt_mutex_lock_nested);
++#endif
++
++#ifndef CONFIG_DEBUG_LOCK_ALLOC
+ /**
+  * rt_mutex_lock - lock a rt_mutex
+  *
+@@ -1473,12 +1496,10 @@ rt_mutex_fastunlock(struct rt_mutex *lock,
+  */
+ void __sched rt_mutex_lock(struct rt_mutex *lock)
+ {
+-	might_sleep();
+-
+-	mutex_acquire(&lock->dep_map, 0, 0, _RET_IP_);
+-	rt_mutex_fastlock(lock, TASK_UNINTERRUPTIBLE, rt_mutex_slowlock);
++	__rt_mutex_lock(lock, 0);
+ }
+ EXPORT_SYMBOL_GPL(rt_mutex_lock);
++#endif
+ 
+ /**
+  * rt_mutex_lock_interruptible - lock a rt_mutex interruptible
+diff --git a/kernel/printk/internal.h b/kernel/printk/internal.h
+index 2a7d04049af4..0f1898820cba 100644
+--- a/kernel/printk/internal.h
++++ b/kernel/printk/internal.h
+@@ -19,11 +19,16 @@
+ #ifdef CONFIG_PRINTK
+ 
+ #define PRINTK_SAFE_CONTEXT_MASK	 0x3fffffff
+-#define PRINTK_NMI_DEFERRED_CONTEXT_MASK 0x40000000
++#define PRINTK_NMI_DIRECT_CONTEXT_MASK	 0x40000000
+ #define PRINTK_NMI_CONTEXT_MASK		 0x80000000
+ 
+ extern raw_spinlock_t logbuf_lock;
+ 
++__printf(5, 0)
++int vprintk_store(int facility, int level,
++		  const char *dict, size_t dictlen,
++		  const char *fmt, va_list args);
++
+ __printf(1, 0) int vprintk_default(const char *fmt, va_list args);
+ __printf(1, 0) int vprintk_deferred(const char *fmt, va_list args);
+ __printf(1, 0) int vprintk_func(const char *fmt, va_list args);
+@@ -54,6 +59,8 @@ void __printk_safe_exit(void);
+ 		local_irq_enable();		\
+ 	} while (0)
+ 
++void defer_console_output(void);
++
+ #else
+ 
+ __printf(1, 0) int vprintk_func(const char *fmt, va_list args) { return 0; }
+diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
+index 512f7c2baedd..f0223a7d9ed1 100644
+--- a/kernel/printk/printk.c
++++ b/kernel/printk/printk.c
+@@ -1680,28 +1680,16 @@ static size_t log_output(int facility, int level, enum log_flags lflags, const c
+ 	return log_store(facility, level, lflags, 0, dict, dictlen, text, text_len);
+ }
+ 
+-asmlinkage int vprintk_emit(int facility, int level,
+-			    const char *dict, size_t dictlen,
+-			    const char *fmt, va_list args)
++/* Must be called under logbuf_lock. */
++int vprintk_store(int facility, int level,
++		  const char *dict, size_t dictlen,
++		  const char *fmt, va_list args)
+ {
+ 	static char textbuf[LOG_LINE_MAX];
+ 	char *text = textbuf;
+ 	size_t text_len;
+ 	enum log_flags lflags = 0;
+-	unsigned long flags;
+-	int printed_len;
+-	bool in_sched = false;
+-
+-	if (level == LOGLEVEL_SCHED) {
+-		level = LOGLEVEL_DEFAULT;
+-		in_sched = true;
+-	}
+-
+-	boot_delay_msec(level);
+-	printk_delay();
+ 
+-	/* This stops the holder of console_sem just where we want him */
+-	logbuf_lock_irqsave(flags);
+ 	/*
+ 	 * The printf needs to come first; we need the syslog
+ 	 * prefix which might be passed-in as a parameter.
+@@ -1742,8 +1730,29 @@ asmlinkage int vprintk_emit(int facility, int level,
+ 	if (dict)
+ 		lflags |= LOG_PREFIX|LOG_NEWLINE;
+ 
+-	printed_len = log_output(facility, level, lflags, dict, dictlen, text, text_len);
++	return log_output(facility, level, lflags,
++			  dict, dictlen, text, text_len);
++}
+ 
++asmlinkage int vprintk_emit(int facility, int level,
++			    const char *dict, size_t dictlen,
++			    const char *fmt, va_list args)
++{
++	int printed_len;
++	bool in_sched = false;
++	unsigned long flags;
++
++	if (level == LOGLEVEL_SCHED) {
++		level = LOGLEVEL_DEFAULT;
++		in_sched = true;
++	}
++
++	boot_delay_msec(level);
++	printk_delay();
++
++	/* This stops the holder of console_sem just where we want him */
++	logbuf_lock_irqsave(flags);
++	printed_len = vprintk_store(facility, level, dict, dictlen, fmt, args);
+ 	logbuf_unlock_irqrestore(flags);
+ 
+ 	/* If called from the scheduler, we can not call up(). */
+@@ -2714,16 +2723,20 @@ void wake_up_klogd(void)
+ 	preempt_enable();
+ }
+ 
+-int vprintk_deferred(const char *fmt, va_list args)
++void defer_console_output(void)
+ {
+-	int r;
+-
+-	r = vprintk_emit(0, LOGLEVEL_SCHED, NULL, 0, fmt, args);
+-
+ 	preempt_disable();
+ 	__this_cpu_or(printk_pending, PRINTK_PENDING_OUTPUT);
+ 	irq_work_queue(this_cpu_ptr(&wake_up_klogd_work));
+ 	preempt_enable();
++}
++
++int vprintk_deferred(const char *fmt, va_list args)
++{
++	int r;
++
++	r = vprintk_emit(0, LOGLEVEL_SCHED, NULL, 0, fmt, args);
++	defer_console_output();
+ 
+ 	return r;
+ }
+diff --git a/kernel/printk/printk_safe.c b/kernel/printk/printk_safe.c
+index 64825b2df3a5..d482fd61ac67 100644
+--- a/kernel/printk/printk_safe.c
++++ b/kernel/printk/printk_safe.c
+@@ -311,24 +311,33 @@ static __printf(1, 0) int vprintk_nmi(const char *fmt, va_list args)
+ 
+ void printk_nmi_enter(void)
+ {
+-	/*
+-	 * The size of the extra per-CPU buffer is limited. Use it only when
+-	 * the main one is locked. If this CPU is not in the safe context,
+-	 * the lock must be taken on another CPU and we could wait for it.
+-	 */
+-	if ((this_cpu_read(printk_context) & PRINTK_SAFE_CONTEXT_MASK) &&
+-	    raw_spin_is_locked(&logbuf_lock)) {
+-		this_cpu_or(printk_context, PRINTK_NMI_CONTEXT_MASK);
+-	} else {
+-		this_cpu_or(printk_context, PRINTK_NMI_DEFERRED_CONTEXT_MASK);
+-	}
++	this_cpu_or(printk_context, PRINTK_NMI_CONTEXT_MASK);
+ }
+ 
+ void printk_nmi_exit(void)
+ {
+-	this_cpu_and(printk_context,
+-		     ~(PRINTK_NMI_CONTEXT_MASK |
+-		       PRINTK_NMI_DEFERRED_CONTEXT_MASK));
++	this_cpu_and(printk_context, ~PRINTK_NMI_CONTEXT_MASK);
++}
++
++/*
++ * Marks a code that might produce many messages in NMI context
++ * and the risk of losing them is more critical than eventual
++ * reordering.
++ *
++ * It has effect only when called in NMI context. Then printk()
++ * will try to store the messages into the main logbuf directly
++ * and use the per-CPU buffers only as a fallback when the lock
++ * is not available.
++ */
++void printk_nmi_direct_enter(void)
++{
++	if (this_cpu_read(printk_context) & PRINTK_NMI_CONTEXT_MASK)
++		this_cpu_or(printk_context, PRINTK_NMI_DIRECT_CONTEXT_MASK);
++}
++
++void printk_nmi_direct_exit(void)
++{
++	this_cpu_and(printk_context, ~PRINTK_NMI_DIRECT_CONTEXT_MASK);
+ }
+ 
+ #else
+@@ -366,6 +375,20 @@ void __printk_safe_exit(void)
+ 
+ __printf(1, 0) int vprintk_func(const char *fmt, va_list args)
+ {
++	/*
++	 * Try to use the main logbuf even in NMI. But avoid calling console
++	 * drivers that might have their own locks.
++	 */
++	if ((this_cpu_read(printk_context) & PRINTK_NMI_DIRECT_CONTEXT_MASK) &&
++	    raw_spin_trylock(&logbuf_lock)) {
++		int len;
++
++		len = vprintk_store(0, LOGLEVEL_DEFAULT, NULL, 0, fmt, args);
++		raw_spin_unlock(&logbuf_lock);
++		defer_console_output();
++		return len;
++	}
++
+ 	/* Use extra buffer in NMI when logbuf_lock is taken or in safe mode. */
+ 	if (this_cpu_read(printk_context) & PRINTK_NMI_CONTEXT_MASK)
+ 		return vprintk_nmi(fmt, args);
+@@ -374,13 +397,6 @@ __printf(1, 0) int vprintk_func(const char *fmt, va_list args)
+ 	if (this_cpu_read(printk_context) & PRINTK_SAFE_CONTEXT_MASK)
+ 		return vprintk_safe(fmt, args);
+ 
+-	/*
+-	 * Use the main logbuf when logbuf_lock is available in NMI.
+-	 * But avoid calling console drivers that might have their own locks.
+-	 */
+-	if (this_cpu_read(printk_context) & PRINTK_NMI_DEFERRED_CONTEXT_MASK)
+-		return vprintk_deferred(fmt, args);
+-
+ 	/* No obstacles. */
+ 	return vprintk_default(fmt, args);
+ }
+diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c
+index bba2217652ff..cb9a5b8532fa 100644
+--- a/kernel/sched/rt.c
++++ b/kernel/sched/rt.c
+@@ -837,6 +837,8 @@ static int do_sched_rt_period_timer(struct rt_bandwidth *rt_b, int overrun)
+ 		 * can be time-consuming. Try to avoid it when possible.
+ 		 */
+ 		raw_spin_lock(&rt_rq->rt_runtime_lock);
++		if (!sched_feat(RT_RUNTIME_SHARE) && rt_rq->rt_runtime != RUNTIME_INF)
++			rt_rq->rt_runtime = rt_b->rt_runtime;
+ 		skip = !rt_rq->rt_time && !rt_rq->rt_nr_running;
+ 		raw_spin_unlock(&rt_rq->rt_runtime_lock);
+ 		if (skip)
+diff --git a/kernel/stop_machine.c b/kernel/stop_machine.c
+index e190d1ef3a23..067cb83f37ea 100644
+--- a/kernel/stop_machine.c
++++ b/kernel/stop_machine.c
+@@ -81,6 +81,7 @@ static bool cpu_stop_queue_work(unsigned int cpu, struct cpu_stop_work *work)
+ 	unsigned long flags;
+ 	bool enabled;
+ 
++	preempt_disable();
+ 	raw_spin_lock_irqsave(&stopper->lock, flags);
+ 	enabled = stopper->enabled;
+ 	if (enabled)
+@@ -90,6 +91,7 @@ static bool cpu_stop_queue_work(unsigned int cpu, struct cpu_stop_work *work)
+ 	raw_spin_unlock_irqrestore(&stopper->lock, flags);
+ 
+ 	wake_up_q(&wakeq);
++	preempt_enable();
+ 
+ 	return enabled;
+ }
+@@ -236,13 +238,24 @@ static int cpu_stop_queue_two_works(int cpu1, struct cpu_stop_work *work1,
+ 	struct cpu_stopper *stopper2 = per_cpu_ptr(&cpu_stopper, cpu2);
+ 	DEFINE_WAKE_Q(wakeq);
+ 	int err;
++
+ retry:
++	/*
++	 * The waking up of stopper threads has to happen in the same
++	 * scheduling context as the queueing.  Otherwise, there is a
++	 * possibility of one of the above stoppers being woken up by another
++	 * CPU, and preempting us. This will cause us to not wake up the other
++	 * stopper forever.
++	 */
++	preempt_disable();
+ 	raw_spin_lock_irq(&stopper1->lock);
+ 	raw_spin_lock_nested(&stopper2->lock, SINGLE_DEPTH_NESTING);
+ 
+-	err = -ENOENT;
+-	if (!stopper1->enabled || !stopper2->enabled)
++	if (!stopper1->enabled || !stopper2->enabled) {
++		err = -ENOENT;
+ 		goto unlock;
++	}
++
+ 	/*
+ 	 * Ensure that if we race with __stop_cpus() the stoppers won't get
+ 	 * queued up in reverse order leading to system deadlock.
+@@ -253,36 +266,30 @@ retry:
+ 	 * It can be falsely true but it is safe to spin until it is cleared,
+ 	 * queue_stop_cpus_work() does everything under preempt_disable().
+ 	 */
+-	err = -EDEADLK;
+-	if (unlikely(stop_cpus_in_progress))
+-			goto unlock;
++	if (unlikely(stop_cpus_in_progress)) {
++		err = -EDEADLK;
++		goto unlock;
++	}
+ 
+ 	err = 0;
+ 	__cpu_stop_queue_work(stopper1, work1, &wakeq);
+ 	__cpu_stop_queue_work(stopper2, work2, &wakeq);
+-	/*
+-	 * The waking up of stopper threads has to happen
+-	 * in the same scheduling context as the queueing.
+-	 * Otherwise, there is a possibility of one of the
+-	 * above stoppers being woken up by another CPU,
+-	 * and preempting us. This will cause us to n ot
+-	 * wake up the other stopper forever.
+-	 */
+-	preempt_disable();
++
+ unlock:
+ 	raw_spin_unlock(&stopper2->lock);
+ 	raw_spin_unlock_irq(&stopper1->lock);
+ 
+ 	if (unlikely(err == -EDEADLK)) {
++		preempt_enable();
++
+ 		while (stop_cpus_in_progress)
+ 			cpu_relax();
++
+ 		goto retry;
+ 	}
+ 
+-	if (!err) {
+-		wake_up_q(&wakeq);
+-		preempt_enable();
+-	}
++	wake_up_q(&wakeq);
++	preempt_enable();
+ 
+ 	return err;
+ }
+diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
+index fbc75c84076e..b7302c37c064 100644
+--- a/kernel/trace/trace.c
++++ b/kernel/trace/trace.c
+@@ -8187,6 +8187,7 @@ void ftrace_dump(enum ftrace_dump_mode oops_dump_mode)
+ 	tracing_off();
+ 
+ 	local_irq_save(flags);
++	printk_nmi_direct_enter();
+ 
+ 	/* Simulate the iterator */
+ 	trace_init_global_iter(&iter);
+@@ -8266,7 +8267,8 @@ void ftrace_dump(enum ftrace_dump_mode oops_dump_mode)
+ 	for_each_tracing_cpu(cpu) {
+ 		atomic_dec(&per_cpu_ptr(iter.trace_buffer->data, cpu)->disabled);
+ 	}
+- 	atomic_dec(&dump_running);
++	atomic_dec(&dump_running);
++	printk_nmi_direct_exit();
+ 	local_irq_restore(flags);
+ }
+ EXPORT_SYMBOL_GPL(ftrace_dump);
+diff --git a/kernel/watchdog.c b/kernel/watchdog.c
+index c8e06703e44c..087994b23f8b 100644
+--- a/kernel/watchdog.c
++++ b/kernel/watchdog.c
+@@ -265,7 +265,7 @@ static void __touch_watchdog(void)
+  * entering idle state.  This should only be used for scheduler events.
+  * Use touch_softlockup_watchdog() for everything else.
+  */
+-void touch_softlockup_watchdog_sched(void)
++notrace void touch_softlockup_watchdog_sched(void)
+ {
+ 	/*
+ 	 * Preemption can be enabled.  It doesn't matter which CPU's timestamp
+@@ -274,7 +274,7 @@ void touch_softlockup_watchdog_sched(void)
+ 	raw_cpu_write(watchdog_touch_ts, 0);
+ }
+ 
+-void touch_softlockup_watchdog(void)
++notrace void touch_softlockup_watchdog(void)
+ {
+ 	touch_softlockup_watchdog_sched();
+ 	wq_watchdog_touch(raw_smp_processor_id());
+diff --git a/kernel/watchdog_hld.c b/kernel/watchdog_hld.c
+index e449a23e9d59..4ece6028007a 100644
+--- a/kernel/watchdog_hld.c
++++ b/kernel/watchdog_hld.c
+@@ -29,7 +29,7 @@ static struct cpumask dead_events_mask;
+ static unsigned long hardlockup_allcpu_dumped;
+ static atomic_t watchdog_cpus = ATOMIC_INIT(0);
+ 
+-void arch_touch_nmi_watchdog(void)
++notrace void arch_touch_nmi_watchdog(void)
+ {
+ 	/*
+ 	 * Using __raw here because some code paths have
+diff --git a/kernel/workqueue.c b/kernel/workqueue.c
+index d8a7f8939c81..08bc551976b2 100644
+--- a/kernel/workqueue.c
++++ b/kernel/workqueue.c
+@@ -5484,7 +5484,7 @@ static void wq_watchdog_timer_fn(unsigned long data)
+ 	mod_timer(&wq_watchdog_timer, jiffies + thresh);
+ }
+ 
+-void wq_watchdog_touch(int cpu)
++notrace void wq_watchdog_touch(int cpu)
+ {
+ 	if (cpu >= 0)
+ 		per_cpu(wq_watchdog_touched_cpu, cpu) = jiffies;
+diff --git a/lib/nmi_backtrace.c b/lib/nmi_backtrace.c
+index 46e4c749e4eb..70b1f9d830cd 100644
+--- a/lib/nmi_backtrace.c
++++ b/lib/nmi_backtrace.c
+@@ -87,11 +87,9 @@ void nmi_trigger_cpumask_backtrace(const cpumask_t *mask,
+ 
+ bool nmi_cpu_backtrace(struct pt_regs *regs)
+ {
+-	static arch_spinlock_t lock = __ARCH_SPIN_LOCK_UNLOCKED;
+ 	int cpu = smp_processor_id();
+ 
+ 	if (cpumask_test_cpu(cpu, to_cpumask(backtrace_mask))) {
+-		arch_spin_lock(&lock);
+ 		if (regs && cpu_in_idle(instruction_pointer(regs))) {
+ 			pr_warn("NMI backtrace for cpu %d skipped: idling at pc %#lx\n",
+ 				cpu, instruction_pointer(regs));
+@@ -102,7 +100,6 @@ bool nmi_cpu_backtrace(struct pt_regs *regs)
+ 			else
+ 				dump_stack();
+ 		}
+-		arch_spin_unlock(&lock);
+ 		cpumask_clear_cpu(cpu, to_cpumask(backtrace_mask));
+ 		return true;
+ 	}
+diff --git a/mm/memcontrol.c b/mm/memcontrol.c
+index db69d938e9ed..6a9a7e1066ef 100644
+--- a/mm/memcontrol.c
++++ b/mm/memcontrol.c
+@@ -4110,6 +4110,14 @@ static struct cftype mem_cgroup_legacy_files[] = {
+ 
+ static DEFINE_IDR(mem_cgroup_idr);
+ 
++static void mem_cgroup_id_remove(struct mem_cgroup *memcg)
++{
++	if (memcg->id.id > 0) {
++		idr_remove(&mem_cgroup_idr, memcg->id.id);
++		memcg->id.id = 0;
++	}
++}
++
+ static void mem_cgroup_id_get_many(struct mem_cgroup *memcg, unsigned int n)
+ {
+ 	VM_BUG_ON(atomic_read(&memcg->id.ref) <= 0);
+@@ -4120,8 +4128,7 @@ static void mem_cgroup_id_put_many(struct mem_cgroup *memcg, unsigned int n)
+ {
+ 	VM_BUG_ON(atomic_read(&memcg->id.ref) < n);
+ 	if (atomic_sub_and_test(n, &memcg->id.ref)) {
+-		idr_remove(&mem_cgroup_idr, memcg->id.id);
+-		memcg->id.id = 0;
++		mem_cgroup_id_remove(memcg);
+ 
+ 		/* Memcg ID pins CSS */
+ 		css_put(&memcg->css);
+@@ -4258,8 +4265,7 @@ static struct mem_cgroup *mem_cgroup_alloc(void)
+ 	idr_replace(&mem_cgroup_idr, memcg, memcg->id.id);
+ 	return memcg;
+ fail:
+-	if (memcg->id.id > 0)
+-		idr_remove(&mem_cgroup_idr, memcg->id.id);
++	mem_cgroup_id_remove(memcg);
+ 	__mem_cgroup_free(memcg);
+ 	return NULL;
+ }
+@@ -4318,6 +4324,7 @@ mem_cgroup_css_alloc(struct cgroup_subsys_state *parent_css)
+ 
+ 	return &memcg->css;
+ fail:
++	mem_cgroup_id_remove(memcg);
+ 	mem_cgroup_free(memcg);
+ 	return ERR_PTR(-ENOMEM);
+ }
+diff --git a/mm/memory.c b/mm/memory.c
+index 5539b1975091..c9657f013a4d 100644
+--- a/mm/memory.c
++++ b/mm/memory.c
+@@ -246,9 +246,6 @@ static void tlb_flush_mmu_tlbonly(struct mmu_gather *tlb)
+ 
+ 	tlb_flush(tlb);
+ 	mmu_notifier_invalidate_range(tlb->mm, tlb->start, tlb->end);
+-#ifdef CONFIG_HAVE_RCU_TABLE_FREE
+-	tlb_table_flush(tlb);
+-#endif
+ 	__tlb_reset_range(tlb);
+ }
+ 
+@@ -256,6 +253,9 @@ static void tlb_flush_mmu_free(struct mmu_gather *tlb)
+ {
+ 	struct mmu_gather_batch *batch;
+ 
++#ifdef CONFIG_HAVE_RCU_TABLE_FREE
++	tlb_table_flush(tlb);
++#endif
+ 	for (batch = &tlb->local; batch && batch->nr; batch = batch->next) {
+ 		free_pages_and_swap_cache(batch->pages, batch->nr);
+ 		batch->nr = 0;
+@@ -331,6 +331,21 @@ bool __tlb_remove_page_size(struct mmu_gather *tlb, struct page *page, int page_
+  * See the comment near struct mmu_table_batch.
+  */
+ 
++/*
++ * If we want tlb_remove_table() to imply TLB invalidates.
++ */
++static inline void tlb_table_invalidate(struct mmu_gather *tlb)
++{
++#ifdef CONFIG_HAVE_RCU_TABLE_INVALIDATE
++	/*
++	 * Invalidate page-table caches used by hardware walkers. Then we still
++	 * need to RCU-sched wait while freeing the pages because software
++	 * walkers can still be in-flight.
++	 */
++	tlb_flush_mmu_tlbonly(tlb);
++#endif
++}
++
+ static void tlb_remove_table_smp_sync(void *arg)
+ {
+ 	/* Simply deliver the interrupt */
+@@ -367,6 +382,7 @@ void tlb_table_flush(struct mmu_gather *tlb)
+ 	struct mmu_table_batch **batch = &tlb->batch;
+ 
+ 	if (*batch) {
++		tlb_table_invalidate(tlb);
+ 		call_rcu_sched(&(*batch)->rcu, tlb_remove_table_rcu);
+ 		*batch = NULL;
+ 	}
+@@ -388,11 +404,13 @@ void tlb_remove_table(struct mmu_gather *tlb, void *table)
+ 	if (*batch == NULL) {
+ 		*batch = (struct mmu_table_batch *)__get_free_page(GFP_NOWAIT | __GFP_NOWARN);
+ 		if (*batch == NULL) {
++			tlb_table_invalidate(tlb);
+ 			tlb_remove_table_one(table);
+ 			return;
+ 		}
+ 		(*batch)->nr = 0;
+ 	}
++
+ 	(*batch)->tables[(*batch)->nr++] = table;
+ 	if ((*batch)->nr == MAX_TABLE_BATCH)
+ 		tlb_table_flush(tlb);
+@@ -1417,11 +1435,9 @@ static inline unsigned long zap_pmd_range(struct mmu_gather *tlb,
+ 	do {
+ 		next = pmd_addr_end(addr, end);
+ 		if (is_swap_pmd(*pmd) || pmd_trans_huge(*pmd) || pmd_devmap(*pmd)) {
+-			if (next - addr != HPAGE_PMD_SIZE) {
+-				VM_BUG_ON_VMA(vma_is_anonymous(vma) &&
+-				    !rwsem_is_locked(&tlb->mm->mmap_sem), vma);
++			if (next - addr != HPAGE_PMD_SIZE)
+ 				__split_huge_pmd(vma, pmd, addr, false, NULL);
+-			} else if (zap_huge_pmd(tlb, vma, pmd, addr))
++			else if (zap_huge_pmd(tlb, vma, pmd, addr))
+ 				goto next;
+ 			/* fall through */
+ 		}
+@@ -4350,6 +4366,9 @@ int generic_access_phys(struct vm_area_struct *vma, unsigned long addr,
+ 		return -EINVAL;
+ 
+ 	maddr = ioremap_prot(phys_addr, PAGE_ALIGN(len + offset), prot);
++	if (!maddr)
++		return -ENOMEM;
++
+ 	if (write)
+ 		memcpy_toio(maddr + offset, buf, len);
+ 	else
+diff --git a/mm/zswap.c b/mm/zswap.c
+index 597008a44f70..ebb0bc88c5f7 100644
+--- a/mm/zswap.c
++++ b/mm/zswap.c
+@@ -989,6 +989,15 @@ static int zswap_frontswap_store(unsigned type, pgoff_t offset,
+ 			ret = -ENOMEM;
+ 			goto reject;
+ 		}
++
++		/* A second zswap_is_full() check after
++		 * zswap_shrink() to make sure it's now
++		 * under the max_pool_percent
++		 */
++		if (zswap_is_full()) {
++			ret = -ENOMEM;
++			goto reject;
++		}
+ 	}
+ 
+ 	/* allocate entry */
+diff --git a/net/caif/caif_dev.c b/net/caif/caif_dev.c
+index 2d38b6e34203..98b62a7990aa 100644
+--- a/net/caif/caif_dev.c
++++ b/net/caif/caif_dev.c
+@@ -131,8 +131,10 @@ static void caif_flow_cb(struct sk_buff *skb)
+ 	caifd = caif_get(skb->dev);
+ 
+ 	WARN_ON(caifd == NULL);
+-	if (caifd == NULL)
++	if (!caifd) {
++		rcu_read_unlock();
+ 		return;
++	}
+ 
+ 	caifd_hold(caifd);
+ 	rcu_read_unlock();
+diff --git a/net/core/lwt_bpf.c b/net/core/lwt_bpf.c
+index 1307731ddfe4..832d69649cb6 100644
+--- a/net/core/lwt_bpf.c
++++ b/net/core/lwt_bpf.c
+@@ -217,7 +217,7 @@ static int bpf_parse_prog(struct nlattr *attr, struct bpf_lwt_prog *prog,
+ 	if (!tb[LWT_BPF_PROG_FD] || !tb[LWT_BPF_PROG_NAME])
+ 		return -EINVAL;
+ 
+-	prog->name = nla_memdup(tb[LWT_BPF_PROG_NAME], GFP_KERNEL);
++	prog->name = nla_memdup(tb[LWT_BPF_PROG_NAME], GFP_ATOMIC);
+ 	if (!prog->name)
+ 		return -ENOMEM;
+ 
+diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c
+index 89910e2c10f4..f112fef79216 100644
+--- a/net/ipv6/esp6.c
++++ b/net/ipv6/esp6.c
+@@ -651,8 +651,10 @@ skip_cow:
+ 
+ 	sg_init_table(sg, nfrags);
+ 	ret = skb_to_sgvec(skb, sg, 0, skb->len);
+-	if (unlikely(ret < 0))
++	if (unlikely(ret < 0)) {
++		kfree(tmp);
+ 		goto out;
++	}
+ 
+ 	skb->ip_summed = CHECKSUM_NONE;
+ 
+diff --git a/net/ipv6/ip6_vti.c b/net/ipv6/ip6_vti.c
+index 0e0ab90a4334..b9e638cc955f 100644
+--- a/net/ipv6/ip6_vti.c
++++ b/net/ipv6/ip6_vti.c
+@@ -480,10 +480,6 @@ vti6_xmit(struct sk_buff *skb, struct net_device *dev, struct flowi *fl)
+ 		goto tx_err_dst_release;
+ 	}
+ 
+-	skb_scrub_packet(skb, !net_eq(t->net, dev_net(dev)));
+-	skb_dst_set(skb, dst);
+-	skb->dev = skb_dst(skb)->dev;
+-
+ 	mtu = dst_mtu(dst);
+ 	if (!skb->ignore_df && skb->len > mtu) {
+ 		skb_dst_update_pmtu(skb, mtu);
+@@ -498,9 +494,14 @@ vti6_xmit(struct sk_buff *skb, struct net_device *dev, struct flowi *fl)
+ 				  htonl(mtu));
+ 		}
+ 
+-		return -EMSGSIZE;
++		err = -EMSGSIZE;
++		goto tx_err_dst_release;
+ 	}
+ 
++	skb_scrub_packet(skb, !net_eq(t->net, dev_net(dev)));
++	skb_dst_set(skb, dst);
++	skb->dev = skb_dst(skb)->dev;
++
+ 	err = dst_output(t->net, skb->sk, skb);
+ 	if (net_xmit_eval(err) == 0) {
+ 		struct pcpu_sw_netstats *tstats = this_cpu_ptr(dev->tstats);
+diff --git a/net/mac80211/util.c b/net/mac80211/util.c
+index 6aef6793d052..81f120466c38 100644
+--- a/net/mac80211/util.c
++++ b/net/mac80211/util.c
+@@ -2068,7 +2068,8 @@ int ieee80211_reconfig(struct ieee80211_local *local)
+ 		if (!sta->uploaded)
+ 			continue;
+ 
+-		if (sta->sdata->vif.type != NL80211_IFTYPE_AP)
++		if (sta->sdata->vif.type != NL80211_IFTYPE_AP &&
++		    sta->sdata->vif.type != NL80211_IFTYPE_AP_VLAN)
+ 			continue;
+ 
+ 		for (state = IEEE80211_STA_NOTEXIST;
+diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
+index 9a945024a0b6..742aacb317e5 100644
+--- a/net/netfilter/nf_tables_api.c
++++ b/net/netfilter/nf_tables_api.c
+@@ -1480,7 +1480,6 @@ static int nf_tables_updchain(struct nft_ctx *ctx, u8 genmask, u8 policy,
+ 	struct nft_base_chain *basechain;
+ 	struct nft_stats *stats = NULL;
+ 	struct nft_chain_hook hook;
+-	const struct nlattr *name;
+ 	struct nf_hook_ops *ops;
+ 	struct nft_trans *trans;
+ 	int err, i;
+@@ -1531,12 +1530,11 @@ static int nf_tables_updchain(struct nft_ctx *ctx, u8 genmask, u8 policy,
+ 			return PTR_ERR(stats);
+ 	}
+ 
++	err = -ENOMEM;
+ 	trans = nft_trans_alloc(ctx, NFT_MSG_NEWCHAIN,
+ 				sizeof(struct nft_trans_chain));
+-	if (trans == NULL) {
+-		free_percpu(stats);
+-		return -ENOMEM;
+-	}
++	if (trans == NULL)
++		goto err;
+ 
+ 	nft_trans_chain_stats(trans) = stats;
+ 	nft_trans_chain_update(trans) = true;
+@@ -1546,19 +1544,37 @@ static int nf_tables_updchain(struct nft_ctx *ctx, u8 genmask, u8 policy,
+ 	else
+ 		nft_trans_chain_policy(trans) = -1;
+ 
+-	name = nla[NFTA_CHAIN_NAME];
+-	if (nla[NFTA_CHAIN_HANDLE] && name) {
+-		nft_trans_chain_name(trans) =
+-			nla_strdup(name, GFP_KERNEL);
+-		if (!nft_trans_chain_name(trans)) {
+-			kfree(trans);
+-			free_percpu(stats);
+-			return -ENOMEM;
++	if (nla[NFTA_CHAIN_HANDLE] &&
++	    nla[NFTA_CHAIN_NAME]) {
++		struct nft_trans *tmp;
++		char *name;
++
++		err = -ENOMEM;
++		name = nla_strdup(nla[NFTA_CHAIN_NAME], GFP_KERNEL);
++		if (!name)
++			goto err;
++
++		err = -EEXIST;
++		list_for_each_entry(tmp, &ctx->net->nft.commit_list, list) {
++			if (tmp->msg_type == NFT_MSG_NEWCHAIN &&
++			    tmp->ctx.table == table &&
++			    nft_trans_chain_update(tmp) &&
++			    nft_trans_chain_name(tmp) &&
++			    strcmp(name, nft_trans_chain_name(tmp)) == 0) {
++				kfree(name);
++				goto err;
++			}
+ 		}
++
++		nft_trans_chain_name(trans) = name;
+ 	}
+ 	list_add_tail(&trans->list, &ctx->net->nft.commit_list);
+ 
+ 	return 0;
++err:
++	free_percpu(stats);
++	kfree(trans);
++	return err;
+ }
+ 
+ static int nf_tables_newchain(struct net *net, struct sock *nlsk,
+@@ -5043,6 +5059,9 @@ static void nf_tables_commit_release(struct nft_trans *trans)
+ 	case NFT_MSG_DELTABLE:
+ 		nf_tables_table_destroy(&trans->ctx);
+ 		break;
++	case NFT_MSG_NEWCHAIN:
++		kfree(nft_trans_chain_name(trans));
++		break;
+ 	case NFT_MSG_DELCHAIN:
+ 		nf_tables_chain_destroy(trans->ctx.chain);
+ 		break;
+@@ -5100,13 +5119,15 @@ static int nf_tables_commit(struct net *net, struct sk_buff *skb)
+ 			nf_tables_table_notify(&trans->ctx, NFT_MSG_DELTABLE);
+ 			break;
+ 		case NFT_MSG_NEWCHAIN:
+-			if (nft_trans_chain_update(trans))
++			if (nft_trans_chain_update(trans)) {
+ 				nft_chain_commit_update(trans);
+-			else
++				nf_tables_chain_notify(&trans->ctx, NFT_MSG_NEWCHAIN);
++				/* trans destroyed after rcu grace period */
++			} else {
+ 				nft_clear(net, trans->ctx.chain);
+-
+-			nf_tables_chain_notify(&trans->ctx, NFT_MSG_NEWCHAIN);
+-			nft_trans_destroy(trans);
++				nf_tables_chain_notify(&trans->ctx, NFT_MSG_NEWCHAIN);
++				nft_trans_destroy(trans);
++			}
+ 			break;
+ 		case NFT_MSG_DELCHAIN:
+ 			list_del_rcu(&trans->ctx.chain->list);
+@@ -5246,7 +5267,7 @@ static int nf_tables_abort(struct net *net, struct sk_buff *skb)
+ 		case NFT_MSG_NEWCHAIN:
+ 			if (nft_trans_chain_update(trans)) {
+ 				free_percpu(nft_trans_chain_stats(trans));
+-
++				kfree(nft_trans_chain_name(trans));
+ 				nft_trans_destroy(trans);
+ 			} else {
+ 				trans->ctx.table->use--;
+diff --git a/net/netfilter/nft_set_hash.c b/net/netfilter/nft_set_hash.c
+index 9c0d5a7ce5f9..33aa2ac3a62e 100644
+--- a/net/netfilter/nft_set_hash.c
++++ b/net/netfilter/nft_set_hash.c
+@@ -359,6 +359,7 @@ static void nft_rhash_destroy(const struct nft_set *set)
+ 	struct nft_rhash *priv = nft_set_priv(set);
+ 
+ 	cancel_delayed_work_sync(&priv->gc_work);
++	rcu_barrier();
+ 	rhashtable_free_and_destroy(&priv->ht, nft_rhash_elem_destroy,
+ 				    (void *)set);
+ }
+diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
+index 4cd351b74e48..753f3e73c498 100644
+--- a/net/wireless/nl80211.c
++++ b/net/wireless/nl80211.c
+@@ -4186,6 +4186,7 @@ static int parse_station_flags(struct genl_info *info,
+ 		params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
+ 					 BIT(NL80211_STA_FLAG_MFP) |
+ 					 BIT(NL80211_STA_FLAG_AUTHORIZED);
++		break;
+ 	default:
+ 		return -EINVAL;
+ 	}
+diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
+index 9c57d6a5816c..a6c0027cadb5 100644
+--- a/net/xfrm/xfrm_policy.c
++++ b/net/xfrm/xfrm_policy.c
+@@ -2285,6 +2285,9 @@ struct dst_entry *xfrm_lookup_route(struct net *net, struct dst_entry *dst_orig,
+ 	if (IS_ERR(dst) && PTR_ERR(dst) == -EREMOTE)
+ 		return make_blackhole(net, dst_orig->ops->family, dst_orig);
+ 
++	if (IS_ERR(dst))
++		dst_release(dst_orig);
++
+ 	return dst;
+ }
+ EXPORT_SYMBOL(xfrm_lookup_route);
+diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
+index dde40f995ac0..5554d28a32eb 100644
+--- a/net/xfrm/xfrm_user.c
++++ b/net/xfrm/xfrm_user.c
+@@ -1021,10 +1021,12 @@ static inline int xfrm_nlmsg_multicast(struct net *net, struct sk_buff *skb,
+ {
+ 	struct sock *nlsk = rcu_dereference(net->xfrm.nlsk);
+ 
+-	if (nlsk)
+-		return nlmsg_multicast(nlsk, skb, pid, group, GFP_ATOMIC);
+-	else
+-		return -1;
++	if (!nlsk) {
++		kfree_skb(skb);
++		return -EPIPE;
++	}
++
++	return nlmsg_multicast(nlsk, skb, pid, group, GFP_ATOMIC);
+ }
+ 
+ static inline size_t xfrm_spdinfo_msgsize(void)
+diff --git a/scripts/gcc-plugins/gcc-common.h b/scripts/gcc-plugins/gcc-common.h
+index ffd1dfaa1cc1..f46750053377 100644
+--- a/scripts/gcc-plugins/gcc-common.h
++++ b/scripts/gcc-plugins/gcc-common.h
+@@ -97,6 +97,10 @@
+ #include "predict.h"
+ #include "ipa-utils.h"
+ 
++#if BUILDING_GCC_VERSION >= 8000
++#include "stringpool.h"
++#endif
++
+ #if BUILDING_GCC_VERSION >= 4009
+ #include "attribs.h"
+ #include "varasm.h"
+diff --git a/scripts/gcc-plugins/latent_entropy_plugin.c b/scripts/gcc-plugins/latent_entropy_plugin.c
+index 65264960910d..cbe1d6c4b1a5 100644
+--- a/scripts/gcc-plugins/latent_entropy_plugin.c
++++ b/scripts/gcc-plugins/latent_entropy_plugin.c
+@@ -255,21 +255,14 @@ static tree handle_latent_entropy_attribute(tree *node, tree name,
+ 	return NULL_TREE;
+ }
+ 
+-static struct attribute_spec latent_entropy_attr = {
+-	.name				= "latent_entropy",
+-	.min_length			= 0,
+-	.max_length			= 0,
+-	.decl_required			= true,
+-	.type_required			= false,
+-	.function_type_required		= false,
+-	.handler			= handle_latent_entropy_attribute,
+-#if BUILDING_GCC_VERSION >= 4007
+-	.affects_type_identity		= false
+-#endif
+-};
++static struct attribute_spec latent_entropy_attr = { };
+ 
+ static void register_attributes(void *event_data __unused, void *data __unused)
+ {
++	latent_entropy_attr.name		= "latent_entropy";
++	latent_entropy_attr.decl_required	= true;
++	latent_entropy_attr.handler		= handle_latent_entropy_attribute;
++
+ 	register_attribute(&latent_entropy_attr);
+ }
+ 
+diff --git a/scripts/gcc-plugins/randomize_layout_plugin.c b/scripts/gcc-plugins/randomize_layout_plugin.c
+index 0073af326449..c4a345c3715b 100644
+--- a/scripts/gcc-plugins/randomize_layout_plugin.c
++++ b/scripts/gcc-plugins/randomize_layout_plugin.c
+@@ -580,68 +580,35 @@ static void finish_type(void *event_data, void *data)
+ 	return;
+ }
+ 
+-static struct attribute_spec randomize_layout_attr = {
+-	.name		= "randomize_layout",
+-	// related to args
+-	.min_length	= 0,
+-	.max_length	= 0,
+-	.decl_required	= false,
+-	// need type declaration
+-	.type_required	= true,
+-	.function_type_required = false,
+-	.handler		= handle_randomize_layout_attr,
+-#if BUILDING_GCC_VERSION >= 4007
+-	.affects_type_identity  = true
+-#endif
+-};
++static struct attribute_spec randomize_layout_attr = { };
++static struct attribute_spec no_randomize_layout_attr = { };
++static struct attribute_spec randomize_considered_attr = { };
++static struct attribute_spec randomize_performed_attr = { };
+ 
+-static struct attribute_spec no_randomize_layout_attr = {
+-	.name		= "no_randomize_layout",
+-	// related to args
+-	.min_length	= 0,
+-	.max_length	= 0,
+-	.decl_required	= false,
+-	// need type declaration
+-	.type_required	= true,
+-	.function_type_required = false,
+-	.handler		= handle_randomize_layout_attr,
++static void register_attributes(void *event_data, void *data)
++{
++	randomize_layout_attr.name		= "randomize_layout";
++	randomize_layout_attr.type_required	= true;
++	randomize_layout_attr.handler		= handle_randomize_layout_attr;
+ #if BUILDING_GCC_VERSION >= 4007
+-	.affects_type_identity  = true
++	randomize_layout_attr.affects_type_identity = true;
+ #endif
+-};
+ 
+-static struct attribute_spec randomize_considered_attr = {
+-	.name		= "randomize_considered",
+-	// related to args
+-	.min_length	= 0,
+-	.max_length	= 0,
+-	.decl_required	= false,
+-	// need type declaration
+-	.type_required	= true,
+-	.function_type_required = false,
+-	.handler		= handle_randomize_considered_attr,
++	no_randomize_layout_attr.name		= "no_randomize_layout";
++	no_randomize_layout_attr.type_required	= true;
++	no_randomize_layout_attr.handler	= handle_randomize_layout_attr;
+ #if BUILDING_GCC_VERSION >= 4007
+-	.affects_type_identity  = false
++	no_randomize_layout_attr.affects_type_identity = true;
+ #endif
+-};
+ 
+-static struct attribute_spec randomize_performed_attr = {
+-	.name		= "randomize_performed",
+-	// related to args
+-	.min_length	= 0,
+-	.max_length	= 0,
+-	.decl_required	= false,
+-	// need type declaration
+-	.type_required	= true,
+-	.function_type_required = false,
+-	.handler		= handle_randomize_performed_attr,
+-#if BUILDING_GCC_VERSION >= 4007
+-	.affects_type_identity  = false
+-#endif
+-};
++	randomize_considered_attr.name		= "randomize_considered";
++	randomize_considered_attr.type_required	= true;
++	randomize_considered_attr.handler	= handle_randomize_considered_attr;
++
++	randomize_performed_attr.name		= "randomize_performed";
++	randomize_performed_attr.type_required	= true;
++	randomize_performed_attr.handler	= handle_randomize_performed_attr;
+ 
+-static void register_attributes(void *event_data, void *data)
+-{
+ 	register_attribute(&randomize_layout_attr);
+ 	register_attribute(&no_randomize_layout_attr);
+ 	register_attribute(&randomize_considered_attr);
+diff --git a/scripts/gcc-plugins/structleak_plugin.c b/scripts/gcc-plugins/structleak_plugin.c
+index 3f8dd4868178..10292f791e99 100644
+--- a/scripts/gcc-plugins/structleak_plugin.c
++++ b/scripts/gcc-plugins/structleak_plugin.c
+@@ -57,21 +57,16 @@ static tree handle_user_attribute(tree *node, tree name, tree args, int flags, b
+ 	return NULL_TREE;
+ }
+ 
+-static struct attribute_spec user_attr = {
+-	.name			= "user",
+-	.min_length		= 0,
+-	.max_length		= 0,
+-	.decl_required		= false,
+-	.type_required		= false,
+-	.function_type_required	= false,
+-	.handler		= handle_user_attribute,
+-#if BUILDING_GCC_VERSION >= 4007
+-	.affects_type_identity	= true
+-#endif
+-};
++static struct attribute_spec user_attr = { };
+ 
+ static void register_attributes(void *event_data, void *data)
+ {
++	user_attr.name			= "user";
++	user_attr.handler		= handle_user_attribute;
++#if BUILDING_GCC_VERSION >= 4007
++	user_attr.affects_type_identity	= true;
++#endif
++
+ 	register_attribute(&user_attr);
+ }
+ 
+diff --git a/sound/soc/sirf/sirf-usp.c b/sound/soc/sirf/sirf-usp.c
+index 77e7dcf969d0..d70fcd4a1adf 100644
+--- a/sound/soc/sirf/sirf-usp.c
++++ b/sound/soc/sirf/sirf-usp.c
+@@ -370,10 +370,9 @@ static int sirf_usp_pcm_probe(struct platform_device *pdev)
+ 	platform_set_drvdata(pdev, usp);
+ 
+ 	mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+-	base = devm_ioremap(&pdev->dev, mem_res->start,
+-		resource_size(mem_res));
+-	if (base == NULL)
+-		return -ENOMEM;
++	base = devm_ioremap_resource(&pdev->dev, mem_res);
++	if (IS_ERR(base))
++		return PTR_ERR(base);
+ 	usp->regmap = devm_regmap_init_mmio(&pdev->dev, base,
+ 					    &sirf_usp_regmap_config);
+ 	if (IS_ERR(usp->regmap))
+diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
+index 3d0dab8282ad..6fc85199ac73 100644
+--- a/sound/soc/soc-pcm.c
++++ b/sound/soc/soc-pcm.c
+@@ -1607,6 +1607,14 @@ static u64 dpcm_runtime_base_format(struct snd_pcm_substream *substream)
+ 		int i;
+ 
+ 		for (i = 0; i < be->num_codecs; i++) {
++			/*
++			 * Skip CODECs which don't support the current stream
++			 * type. See soc_pcm_init_runtime_hw() for more details
++			 */
++			if (!snd_soc_dai_stream_valid(be->codec_dais[i],
++						      stream))
++				continue;
++
+ 			codec_dai_drv = be->codec_dais[i]->driver;
+ 			if (stream == SNDRV_PCM_STREAM_PLAYBACK)
+ 				codec_stream = &codec_dai_drv->playback;
+diff --git a/sound/soc/zte/zx-tdm.c b/sound/soc/zte/zx-tdm.c
+index dc955272f58b..389272eeba9a 100644
+--- a/sound/soc/zte/zx-tdm.c
++++ b/sound/soc/zte/zx-tdm.c
+@@ -144,8 +144,8 @@ static void zx_tdm_rx_dma_en(struct zx_tdm_info *tdm, bool on)
+ #define ZX_TDM_RATES	(SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000)
+ 
+ #define ZX_TDM_FMTBIT \
+-	(SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FORMAT_MU_LAW | \
+-	SNDRV_PCM_FORMAT_A_LAW)
++	(SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_MU_LAW | \
++	SNDRV_PCM_FMTBIT_A_LAW)
+ 
+ static int zx_tdm_dai_probe(struct snd_soc_dai *dai)
+ {
+diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
+index bd9c6b31a504..1512086c8cb8 100644
+--- a/tools/power/x86/turbostat/turbostat.c
++++ b/tools/power/x86/turbostat/turbostat.c
+@@ -1038,9 +1038,7 @@ void format_all_counters(struct thread_data *t, struct core_data *c, struct pkg_
+ 	if (!printed || !summary_only)
+ 		print_header("\t");
+ 
+-	if (topo.num_cpus > 1)
+-		format_counters(&average.threads, &average.cores,
+-			&average.packages);
++	format_counters(&average.threads, &average.cores, &average.packages);
+ 
+ 	printed = 1;
+ 
+@@ -4031,7 +4029,9 @@ void process_cpuid()
+ 	family = (fms >> 8) & 0xf;
+ 	model = (fms >> 4) & 0xf;
+ 	stepping = fms & 0xf;
+-	if (family == 6 || family == 0xf)
++	if (family == 0xf)
++		family += (fms >> 20) & 0xff;
++	if (family >= 6)
+ 		model += ((fms >> 16) & 0xf) << 4;
+ 
+ 	if (!quiet) {
+diff --git a/tools/testing/selftests/ftrace/test.d/00basic/snapshot.tc b/tools/testing/selftests/ftrace/test.d/00basic/snapshot.tc
+new file mode 100644
+index 000000000000..3b1f45e13a2e
+--- /dev/null
++++ b/tools/testing/selftests/ftrace/test.d/00basic/snapshot.tc
+@@ -0,0 +1,28 @@
++#!/bin/sh
++# description: Snapshot and tracing setting
++# flags: instance
++
++[ ! -f snapshot ] && exit_unsupported
++
++echo "Set tracing off"
++echo 0 > tracing_on
++
++echo "Allocate and take a snapshot"
++echo 1 > snapshot
++
++# Since trace buffer is empty, snapshot is also empty, but allocated
++grep -q "Snapshot is allocated" snapshot
++
++echo "Ensure keep tracing off"
++test `cat tracing_on` -eq 0
++
++echo "Set tracing on"
++echo 1 > tracing_on
++
++echo "Take a snapshot again"
++echo 1 > snapshot
++
++echo "Ensure keep tracing on"
++test `cat tracing_on` -eq 1
++
++exit 0
+diff --git a/tools/usb/ffs-test.c b/tools/usb/ffs-test.c
+index 95dd14648ba5..0f395dfb7774 100644
+--- a/tools/usb/ffs-test.c
++++ b/tools/usb/ffs-test.c
+@@ -44,12 +44,25 @@
+ 
+ /******************** Little Endian Handling ********************************/
+ 
+-#define cpu_to_le16(x)  htole16(x)
+-#define cpu_to_le32(x)  htole32(x)
++/*
++ * cpu_to_le16/32 are used when initializing structures, a context where a
++ * function call is not allowed. To solve this, we code cpu_to_le16/32 in a way
++ * that allows them to be used when initializing structures.
++ */
++
++#if __BYTE_ORDER == __LITTLE_ENDIAN
++#define cpu_to_le16(x)  (x)
++#define cpu_to_le32(x)  (x)
++#else
++#define cpu_to_le16(x)  ((((x) >> 8) & 0xffu) | (((x) & 0xffu) << 8))
++#define cpu_to_le32(x)  \
++	((((x) & 0xff000000u) >> 24) | (((x) & 0x00ff0000u) >>  8) | \
++	(((x) & 0x0000ff00u) <<  8) | (((x) & 0x000000ffu) << 24))
++#endif
++
+ #define le32_to_cpu(x)  le32toh(x)
+ #define le16_to_cpu(x)  le16toh(x)
+ 
+-
+ /******************** Messages and Errors ***********************************/
+ 
+ static const char argv0[] = "ffs-test";
+diff --git a/virt/kvm/arm/mmu.c b/virt/kvm/arm/mmu.c
+index b69798a7880e..ec275b8472a9 100644
+--- a/virt/kvm/arm/mmu.c
++++ b/virt/kvm/arm/mmu.c
+@@ -901,19 +901,35 @@ static int stage2_set_pmd_huge(struct kvm *kvm, struct kvm_mmu_memory_cache
+ 	pmd = stage2_get_pmd(kvm, cache, addr);
+ 	VM_BUG_ON(!pmd);
+ 
+-	/*
+-	 * Mapping in huge pages should only happen through a fault.  If a
+-	 * page is merged into a transparent huge page, the individual
+-	 * subpages of that huge page should be unmapped through MMU
+-	 * notifiers before we get here.
+-	 *
+-	 * Merging of CompoundPages is not supported; they should become
+-	 * splitting first, unmapped, merged, and mapped back in on-demand.
+-	 */
+-	VM_BUG_ON(pmd_present(*pmd) && pmd_pfn(*pmd) != pmd_pfn(*new_pmd));
+-
+ 	old_pmd = *pmd;
+ 	if (pmd_present(old_pmd)) {
++		/*
++		 * Multiple vcpus faulting on the same PMD entry, can
++		 * lead to them sequentially updating the PMD with the
++		 * same value. Following the break-before-make
++		 * (pmd_clear() followed by tlb_flush()) process can
++		 * hinder forward progress due to refaults generated
++		 * on missing translations.
++		 *
++		 * Skip updating the page table if the entry is
++		 * unchanged.
++		 */
++		if (pmd_val(old_pmd) == pmd_val(*new_pmd))
++			return 0;
++
++		/*
++		 * Mapping in huge pages should only happen through a
++		 * fault.  If a page is merged into a transparent huge
++		 * page, the individual subpages of that huge page
++		 * should be unmapped through MMU notifiers before we
++		 * get here.
++		 *
++		 * Merging of CompoundPages is not supported; they
++		 * should become splitting first, unmapped, merged,
++		 * and mapped back in on-demand.
++		 */
++		VM_BUG_ON(pmd_pfn(old_pmd) != pmd_pfn(*new_pmd));
++
+ 		pmd_clear(pmd);
+ 		kvm_tlb_flush_vmid_ipa(kvm, addr);
+ 	} else {
+@@ -969,6 +985,10 @@ static int stage2_set_pte(struct kvm *kvm, struct kvm_mmu_memory_cache *cache,
+ 	/* Create 2nd stage page table mapping - Level 3 */
+ 	old_pte = *pte;
+ 	if (pte_present(old_pte)) {
++		/* Skip page table update if there is no change */
++		if (pte_val(old_pte) == pte_val(*new_pte))
++			return 0;
++
+ 		kvm_set_pte(pte, __pte(0));
+ 		kvm_tlb_flush_vmid_ipa(kvm, addr);
+ 	} else {