Merge android-4.4.158 (f9e4134) into msm-4.4

* refs/heads/tmp-f9e4134
  Linux 4.4.158
  MIPS: VDSO: Match data page cache colouring when D$ aliases
  drivers: net: cpsw: fix segfault in case of bad phy-handle
  mei: bus: type promotion bug in mei_nfc_if_version()
  USB: serial: ti_usb_3410_5052: fix array underflow in completion handler
  pinctrl: qcom: spmi-gpio: Fix pmic_gpio_config_get() to be compliant
  drm/panel: type promotion bug in s6e8aa0_read_mtp_id()
  selftest: timers: Tweak raw_skew to SKIP when ADJ_OFFSET/other clock adjustments are in progress
  ALSA: pcm: Fix snd_interval_refine first/last with open min/max
  rtc: bq4802: add error handling for devm_ioremap
  drm/amdkfd: Fix error codes in kfd_get_process
  gpiolib: Mark gpio_suffixes array with __maybe_unused
  coresight: tpiu: Fix disabling timeouts
  coresight: Handle errors in finding input/output ports
  parport: sunbpp: fix error return code
  drm/nouveau: tegra: Detach from ARM DMA/IOMMU mapping
  ARM: hisi: check of_iomap and fix missing of_node_put
  ARM: hisi: fix error handling and missing of_node_put
  ARM: hisi: handle of_iomap and fix missing of_node_put
  MIPS: loongson64: cs5536: Fix PCI_OHCI_INT_REG reads
  mtdchar: fix overflows in adjustment of `count`
  audit: fix use-after-free in audit_add_watch
  binfmt_elf: Respect error return from `regset->active'
  CIFS: fix wrapping bugs in num_entries()
  cifs: prevent integer overflow in nxt_dir_entry()
  usb: cdc-wdm: Fix a sleep-in-atomic-context bug in service_outstanding_interrupt()
  USB: yurex: Fix buffer over-read in yurex_write()
  usb: misc: uss720: Fix two sleep-in-atomic-context bugs
  USB: serial: io_ti: fix array underflow in completion handler
  USB: net2280: Fix erroneous synchronization change
  USB: add quirk for WORLDE Controller KS49 or Prodipe MIDI 49C USB controller
  usb: host: u132-hcd: Fix a sleep-in-atomic-context bug in u132_get_frame()
  usb: Avoid use-after-free by flushing endpoints early in usb_set_interface()
  USB: Add quirk to support DJI CineSSD
  usb: Don't die twice if PCI xhci host is not responding in resume
  misc: hmc6352: fix potential Spectre v1
  Tools: hv: Fix a bug in the key delete code
  IB/ipoib: Avoid a race condition between start_xmit and cm_rep_handler
  xen/netfront: fix waiting for xenbus state change
  pstore: Fix incorrect persistent ram buffer mapping
  RDMA/cma: Protect cma dev list with lock
  xen-netfront: fix warn message as irq device name has '/'
  crypto: sharah - Unregister correct algorithms for SAHARA 3
  platform/x86: toshiba_acpi: Fix defined but not used build warnings
  s390/qeth: reset layer2 attribute on layer switch
  s390/qeth: fix race in used-buffer accounting
  arm64: dts: qcom: db410c: Fix Bluetooth LED trigger
  xen-netfront: fix queue name setting
  mac80211: restrict delayed tailroom needed decrement
  MIPS: jz4740: Bump zload address
  powerpc/powernv: opal_put_chars partial write fix
  perf powerpc: Fix callchain ip filtering
  ARM: exynos: Clear global variable on init error path
  fbdev: Distinguish between interlaced and progressive modes
  perf powerpc: Fix callchain ip filtering when return address is in a register
  fbdev/via: fix defined but not used warning
  video: goldfishfb: fix memory leak on driver remove
  fbdev: omapfb: off by one in omapfb_register_client()
  mtd/maps: fix solutionengine.c printk format warnings
  media: videobuf2-core: check for q->error in vb2_core_qbuf()
  MIPS: ath79: fix system restart
  dmaengine: pl330: fix irq race with terminate_all
  kbuild: add .DELETE_ON_ERROR special target
  clk: imx6ul: fix missing of_node_put()
  gfs2: Special-case rindex for gfs2_grow
  xfrm: fix 'passing zero to ERR_PTR()' warning
  ALSA: usb-audio: Fix multiple definitions in AU0828_DEVICE() macro
  ALSA: msnd: Fix the default sample sizes
  iommu/arm-smmu-v3: sync the OVACKFLG to PRIQ consumer register
  BACKPORT: arm/syscalls: Optimize address limit check
  UPSTREAM: syscalls: Use CHECK_DATA_CORRUPTION for addr_limit_user_check
  BACKPORT: arm64/syscalls: Check address limit on user-mode return
  BACKPORT: x86/syscalls: Check address limit on user-mode return
  BACKPORT: lkdtm: add bad USER_DS test
  UPSTREAM: bug: switch data corruption check to __must_check
  BACKPORT: lkdtm: Add tests for struct list corruption
  UPSTREAM: bug: Provide toggle for BUG on data corruption
  UPSTREAM: list: Split list_del() debug checking into separate function
  UPSTREAM: rculist: Consolidate DEBUG_LIST for list_add_rcu()
  BACKPORT: list: Split list_add() debug checking into separate function
  FROMLIST: ANDROID: binder: Add BINDER_GET_NODE_INFO_FOR_REF ioctl.

Conflicts:
	include/linux/bug.h
	lib/Kconfig.debug
	lib/list_debug.c

Change-Id: I9d87b6b133cac5b642e5e0c928e0bcd0eda6fbdb
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>

Makefile

@@ -1,6 +1,6 @@
 VERSION = 4
 PATCHLEVEL = 4
-SUBLEVEL = 157
+SUBLEVEL = 158
 EXTRAVERSION =
 NAME = Blurry Fish Butt
 

arch/arm/boot/dts/qcom/apq8016-sbc.dtsi

@@ -105,7 +105,7 @@
 			led@6 {
 				label = "apq8016-sbc:blue:bt";
 				gpios = <&pm8916_mpps 3 GPIO_ACTIVE_HIGH>;
-				linux,default-trigger = "bt";
+				linux,default-trigger = "bluetooth-power";
 				default-state = "off";
 			};
 		};

arch/arm/kernel/entry-common.S

@@ -12,6 +12,7 @@
 #include <asm/unistd.h>
 #include <asm/ftrace.h>
 #include <asm/unwind.h>
+#include <asm/memory.h>
 
 #ifdef CONFIG_NEED_RET_TO_USER
 #include <mach/entry-macro.S>
@@ -35,6 +36,9 @@ ret_fast_syscall:
  UNWIND(.fnstart	)
  UNWIND(.cantunwind	)
 	disable_irq_notrace			@ disable interrupts
+	ldr	r2, [tsk, #TI_ADDR_LIMIT]
+	cmp	r2, #TASK_SIZE
+	blne	addr_limit_check_failed
 	ldr	r1, [tsk, #TI_FLAGS]		@ re-check for syscall tracing
 	tst	r1, #_TIF_SYSCALL_WORK | _TIF_WORK_MASK
 	bne	fast_work_pending
@@ -61,6 +65,9 @@ ret_fast_syscall:
  UNWIND(.cantunwind	)
 	str	r0, [sp, #S_R0 + S_OFF]!	@ save returned r0
 	disable_irq_notrace			@ disable interrupts
+	ldr	r2, [tsk, #TI_ADDR_LIMIT]
+	cmp	r2, #TASK_SIZE
+	blne	addr_limit_check_failed
 	ldr	r1, [tsk, #TI_FLAGS]		@ re-check for syscall tracing
 	tst	r1, #_TIF_SYSCALL_WORK | _TIF_WORK_MASK
 	beq	no_work_pending
@@ -93,6 +100,9 @@ ENTRY(ret_to_user)
 ret_slow_syscall:
 	disable_irq_notrace			@ disable interrupts
 ENTRY(ret_to_user_from_irq)
+	ldr	r2, [tsk, #TI_ADDR_LIMIT]
+	cmp	r2, #TASK_SIZE
+	blne	addr_limit_check_failed
 	ldr	r1, [tsk, #TI_FLAGS]
 	tst	r1, #_TIF_WORK_MASK
 	bne	slow_work_pending

arch/arm/kernel/signal.c

@@ -14,6 +14,7 @@
 #include <linux/uaccess.h>
 #include <linux/tracehook.h>
 #include <linux/uprobes.h>
+#include <linux/syscalls.h>
 
 #include <asm/elf.h>
 #include <asm/cacheflush.h>
@@ -631,3 +632,9 @@ struct page *get_signal_page(void)
 
 	return page;
 }
+
+/* Defer to generic check */
+asmlinkage void addr_limit_check_failed(void)
+{
+	addr_limit_user_check();
+}

arch/arm/mach-exynos/suspend.c

@@ -260,6 +260,7 @@ static int __init exynos_pmu_irq_init(struct device_node *node,
 					  NULL);
 	if (!domain) {
 		iounmap(pmu_base_addr);
+		pmu_base_addr = NULL;
 		return -ENOMEM;
 	}
 

arch/arm/mach-hisi/hotplug.c

@@ -148,13 +148,20 @@ static int hi3xxx_hotplug_init(void)
 	struct device_node *node;
 
 	node = of_find_compatible_node(NULL, NULL, "hisilicon,sysctrl");
-	if (node) {
+	if (!node) {
-		ctrl_base = of_iomap(node, 0);
+		id = ERROR_CTRL;
-		id = HI3620_CTRL;
+		return -ENOENT;
-		return 0;
 	}
-	id = ERROR_CTRL;
+
-	return -ENOENT;
+	ctrl_base = of_iomap(node, 0);
+	of_node_put(node);
+	if (!ctrl_base) {
+		id = ERROR_CTRL;
+		return -ENOMEM;
+	}
+
+	id = HI3620_CTRL;
+	return 0;
 }
 
 void hi3xxx_set_cpu(int cpu, bool enable)
@@ -173,11 +180,15 @@ static bool hix5hd2_hotplug_init(void)
 	struct device_node *np;
 
 	np = of_find_compatible_node(NULL, NULL, "hisilicon,cpuctrl");
-	if (np) {
+	if (!np)
-		ctrl_base = of_iomap(np, 0);
+		return false;
-		return true;
+
-	}
+	ctrl_base = of_iomap(np, 0);
-	return false;
+	of_node_put(np);
+	if (!ctrl_base)
+		return false;
+
+	return true;
 }
 
 void hix5hd2_set_cpu(int cpu, bool enable)
@@ -219,10 +230,10 @@ void hip01_set_cpu(int cpu, bool enable)
 
 	if (!ctrl_base) {
 		np = of_find_compatible_node(NULL, NULL, "hisilicon,hip01-sysctrl");
-		if (np)
+		BUG_ON(!np);
-			ctrl_base = of_iomap(np, 0);
+		ctrl_base = of_iomap(np, 0);
-		else
+		of_node_put(np);
-			BUG();
+		BUG_ON(!ctrl_base);
 	}
 
 	if (enable) {

arch/arm64/include/asm/thread_info.h

@@ -120,6 +120,7 @@ static inline struct thread_info *current_thread_info(void)
 #define TIF_NEED_RESCHED	1
 #define TIF_NOTIFY_RESUME	2	/* callback before returning to user */
 #define TIF_FOREIGN_FPSTATE	3	/* CPU's FP state is not current's */
+#define TIF_FSCHECK		4	/* Check FS is USER_DS on return */
 #define TIF_NOHZ		7
 #define TIF_SYSCALL_TRACE	8
 #define TIF_SYSCALL_AUDIT	9
@@ -141,10 +142,12 @@ static inline struct thread_info *current_thread_info(void)
 #define _TIF_SYSCALL_AUDIT	(1 << TIF_SYSCALL_AUDIT)
 #define _TIF_SYSCALL_TRACEPOINT	(1 << TIF_SYSCALL_TRACEPOINT)
 #define _TIF_SECCOMP		(1 << TIF_SECCOMP)
+#define _TIF_FSCHECK		(1 << TIF_FSCHECK)
 #define _TIF_32BIT		(1 << TIF_32BIT)
 
 #define _TIF_WORK_MASK		(_TIF_NEED_RESCHED | _TIF_SIGPENDING | \
-				 _TIF_NOTIFY_RESUME | _TIF_FOREIGN_FPSTATE)
+				 _TIF_NOTIFY_RESUME | _TIF_FOREIGN_FPSTATE | \
+				 _TIF_FSCHECK)
 
 #define _TIF_SYSCALL_WORK	(_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \
 				 _TIF_SYSCALL_TRACEPOINT | _TIF_SECCOMP | \

arch/arm64/include/asm/uaccess.h

@@ -73,6 +73,9 @@ static inline void set_fs(mm_segment_t fs)
 {
 	current_thread_info()->addr_limit = fs;
 
+	/* On user-mode return, check fs is correct */
+	set_thread_flag(TIF_FSCHECK);
+
 	/*
 	 * Enable/disable UAO so that copy_to_user() etc can access
 	 * kernel memory with the unprivileged instructions.

arch/arm64/kernel/signal.c

@@ -25,6 +25,7 @@
 #include <linux/uaccess.h>
 #include <linux/tracehook.h>
 #include <linux/ratelimit.h>
+#include <linux/syscalls.h>
 
 #include <asm/debug-monitors.h>
 #include <asm/elf.h>
@@ -402,6 +403,9 @@ static void do_signal(struct pt_regs *regs)
 asmlinkage void do_notify_resume(struct pt_regs *regs,
 				 unsigned int thread_flags)
 {
+	/* Check valid user FS if needed */
+	addr_limit_user_check();
+
 	if (thread_flags & _TIF_SIGPENDING)
 		do_signal(regs);
 

arch/mips/ath79/setup.c

@@ -44,6 +44,7 @@ static char ath79_sys_type[ATH79_SYS_TYPE_LEN];
 
 static void ath79_restart(char *command)
 {
+	local_irq_disable();
 	ath79_device_reset_set(AR71XX_RESET_FULL_CHIP);
 	for (;;)
 		if (cpu_wait)

arch/mips/include/asm/mach-ath79/ath79.h

@@ -133,6 +133,7 @@ static inline u32 ath79_pll_rr(unsigned reg)
 static inline void ath79_reset_wr(unsigned reg, u32 val)
 {
 	__raw_writel(val, ath79_reset_base + reg);
+	(void) __raw_readl(ath79_reset_base + reg); /* flush */
 }
 
 static inline u32 ath79_reset_rr(unsigned reg)

arch/mips/jz4740/Platform

@@ -1,4 +1,4 @@
 platform-$(CONFIG_MACH_INGENIC)	+= jz4740/
 cflags-$(CONFIG_MACH_INGENIC)	+= -I$(srctree)/arch/mips/include/asm/mach-jz4740
 load-$(CONFIG_MACH_INGENIC)	+= 0xffffffff80010000
-zload-$(CONFIG_MACH_INGENIC)	+= 0xffffffff80600000
+zload-$(CONFIG_MACH_INGENIC)	+= 0xffffffff81000000

arch/mips/kernel/vdso.c

@@ -14,12 +14,14 @@
 #include <linux/init.h>
 #include <linux/ioport.h>
 #include <linux/irqchip/mips-gic.h>
+#include <linux/kernel.h>
 #include <linux/mm.h>
 #include <linux/sched.h>
 #include <linux/slab.h>
 #include <linux/timekeeper_internal.h>
 
 #include <asm/abi.h>
+#include <asm/page.h>
 #include <asm/vdso.h>
 
 /* Kernel-provided data used by the VDSO. */
@@ -128,12 +130,30 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
 	vvar_size = gic_size + PAGE_SIZE;
 	size = vvar_size + image->size;
 
+	/*
+	 * Find a region that's large enough for us to perform the
+	 * colour-matching alignment below.
+	 */
+	if (cpu_has_dc_aliases)
+		size += shm_align_mask + 1;
+
 	base = get_unmapped_area(NULL, 0, size, 0, 0);
 	if (IS_ERR_VALUE(base)) {
 		ret = base;
 		goto out;
 	}
 
+	/*
+	 * If we suffer from dcache aliasing, ensure that the VDSO data page
+	 * mapping is coloured the same as the kernel's mapping of that memory.
+	 * This ensures that when the kernel updates the VDSO data userland
+	 * will observe it without requiring cache invalidations.
+	 */
+	if (cpu_has_dc_aliases) {
+		base = __ALIGN_MASK(base, shm_align_mask);
+		base += ((unsigned long)&vdso_data - gic_size) & shm_align_mask;
+	}
+
 	data_addr = base + gic_size;
 	vdso_addr = data_addr + PAGE_SIZE;
 

arch/mips/loongson64/common/cs5536/cs5536_ohci.c

@@ -138,7 +138,7 @@ u32 pci_ohci_read_reg(int reg)
 		break;
 	case PCI_OHCI_INT_REG:
 		_rdmsr(DIVIL_MSR_REG(PIC_YSEL_LOW), &hi, &lo);
-		if ((lo & 0x00000f00) == CS5536_USB_INTR)
+		if (((lo >> PIC_YSEL_LOW_USB_SHIFT) & 0xf) == CS5536_USB_INTR)
 			conf_data = 1;
 		break;
 	default:

arch/powerpc/platforms/powernv/opal.c

@@ -371,7 +371,7 @@ int opal_put_chars(uint32_t vtermno, const char *data, int total_len)
 		/* Closed or other error drop */
 		if (rc != OPAL_SUCCESS && rc != OPAL_BUSY &&
 		    rc != OPAL_BUSY_EVENT) {
-			written = total_len;
+			written += total_len;
 			break;
 		}
 		if (rc == OPAL_SUCCESS) {

arch/x86/entry/common.c

@@ -22,6 +22,7 @@
 #include <linux/user-return-notifier.h>
 #include <linux/nospec.h>
 #include <linux/uprobes.h>
+#include <linux/syscalls.h>
 
 #include <asm/desc.h>
 #include <asm/traps.h>
@@ -273,6 +274,8 @@ __visible inline void prepare_exit_to_usermode(struct pt_regs *regs)
 	struct thread_info *ti = pt_regs_to_thread_info(regs);
 	u32 cached_flags;
 
+	addr_limit_user_check();
+
 	if (IS_ENABLED(CONFIG_PROVE_LOCKING) && WARN_ON(!irqs_disabled()))
 		local_irq_disable();
 

arch/x86/include/asm/thread_info.h

@@ -111,6 +111,7 @@ struct thread_info {
 #define TIF_SYSCALL_TRACEPOINT	28	/* syscall tracepoint instrumentation */
 #define TIF_ADDR32		29	/* 32-bit address space on 64 bits */
 #define TIF_X32			30	/* 32-bit native x86-64 binary */
+#define TIF_FSCHECK		31	/* Check FS is USER_DS on return */
 
 #define _TIF_SYSCALL_TRACE	(1 << TIF_SYSCALL_TRACE)
 #define _TIF_NOTIFY_RESUME	(1 << TIF_NOTIFY_RESUME)
@@ -135,6 +136,7 @@ struct thread_info {
 #define _TIF_SYSCALL_TRACEPOINT	(1 << TIF_SYSCALL_TRACEPOINT)
 #define _TIF_ADDR32		(1 << TIF_ADDR32)
 #define _TIF_X32		(1 << TIF_X32)
+#define _TIF_FSCHECK		(1 << TIF_FSCHECK)
 
 /* work to do in syscall_trace_enter() */
 #define _TIF_WORK_SYSCALL_ENTRY	\
@@ -145,7 +147,7 @@ struct thread_info {
 /* work to do on any return to user space */
 #define _TIF_ALLWORK_MASK						\
 	((0x0000FFFF & ~_TIF_SECCOMP) | _TIF_SYSCALL_TRACEPOINT |	\
-	_TIF_NOHZ)
+	_TIF_NOHZ | _TIF_FSCHECK)
 
 /* flags to check in __switch_to() */
 #define _TIF_WORK_CTXSW							\

arch/x86/include/asm/uaccess.h

@@ -30,7 +30,12 @@
 
 #define get_ds()	(KERNEL_DS)
 #define get_fs()	(current_thread_info()->addr_limit)
-#define set_fs(x)	(current_thread_info()->addr_limit = (x))
+static inline void set_fs(mm_segment_t fs)
+{
+	current_thread_info()->addr_limit = fs;
+	/* On user-mode return, check fs is correct */
+	set_thread_flag(TIF_FSCHECK);
+}
 
 #define segment_eq(a, b)	((a).seg == (b).seg)
 

drivers/android/binder.c

@@ -4714,6 +4714,42 @@ out:
 	return ret;
 }
 
+static int binder_ioctl_get_node_info_for_ref(struct binder_proc *proc,
+		struct binder_node_info_for_ref *info)
+{
+	struct binder_node *node;
+	struct binder_context *context = proc->context;
+	__u32 handle = info->handle;
+
+	if (info->strong_count || info->weak_count || info->reserved1 ||
+	    info->reserved2 || info->reserved3) {
+		binder_user_error("%d BINDER_GET_NODE_INFO_FOR_REF: only handle may be non-zero.",
+				  proc->pid);
+		return -EINVAL;
+	}
+
+	/* This ioctl may only be used by the context manager */
+	mutex_lock(&context->context_mgr_node_lock);
+	if (!context->binder_context_mgr_node ||
+		context->binder_context_mgr_node->proc != proc) {
+		mutex_unlock(&context->context_mgr_node_lock);
+		return -EPERM;
+	}
+	mutex_unlock(&context->context_mgr_node_lock);
+
+	node = binder_get_node_from_ref(proc, handle, true, NULL);
+	if (!node)
+		return -EINVAL;
+
+	info->strong_count = node->local_strong_refs +
+		node->internal_strong_refs;
+	info->weak_count = node->local_weak_refs;
+
+	binder_put_node(node);
+
+	return 0;
+}
+
 static int binder_ioctl_get_node_debug_info(struct binder_proc *proc,
 				struct binder_node_debug_info *info) {
 	struct rb_node *n;
@@ -4807,6 +4843,25 @@ static long binder_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 		}
 		break;
 	}
+	case BINDER_GET_NODE_INFO_FOR_REF: {
+		struct binder_node_info_for_ref info;
+
+		if (copy_from_user(&info, ubuf, sizeof(info))) {
+			ret = -EFAULT;
+			goto err;
+		}
+
+		ret = binder_ioctl_get_node_info_for_ref(proc, &info);
+		if (ret < 0)
+			goto err;
+
+		if (copy_to_user(ubuf, &info, sizeof(info))) {
+			ret = -EFAULT;
+			goto err;
+		}
+
+		break;
+	}
 	case BINDER_GET_NODE_DEBUG_INFO: {
 		struct binder_node_debug_info info;
 

drivers/clk/imx/clk-imx6ul.c

@@ -120,6 +120,7 @@ static void __init imx6ul_clocks_init(struct device_node *ccm_node)
 
 	np = of_find_compatible_node(NULL, NULL, "fsl,imx6ul-anatop");
 	base = of_iomap(np, 0);
+	of_node_put(np);
 	WARN_ON(!base);
 
 	clks[IMX6UL_PLL1_BYPASS_SRC] = imx_clk_mux("pll1_bypass_src", base + 0x00, 14, 1, pll_bypass_src_sels, ARRAY_SIZE(pll_bypass_src_sels));

drivers/crypto/sahara.c

@@ -1363,7 +1363,7 @@ err_sha_v4_algs:
 
 err_sha_v3_algs:
 	for (j = 0; j < k; j++)
-		crypto_unregister_ahash(&sha_v4_algs[j]);
+		crypto_unregister_ahash(&sha_v3_algs[j]);
 
 err_aes_algs:
 	for (j = 0; j < i; j++)
@@ -1379,7 +1379,7 @@ static void sahara_unregister_algs(struct sahara_dev *dev)
 	for (i = 0; i < ARRAY_SIZE(aes_algs); i++)
 		crypto_unregister_alg(&aes_algs[i]);
 
-	for (i = 0; i < ARRAY_SIZE(sha_v4_algs); i++)
+	for (i = 0; i < ARRAY_SIZE(sha_v3_algs); i++)
 		crypto_unregister_ahash(&sha_v3_algs[i]);
 
 	if (dev->version > SAHARA_VERSION_3)

drivers/dma/pl330.c

@@ -2132,13 +2132,14 @@ static int pl330_terminate_all(struct dma_chan *chan)
 
 	pm_runtime_get_sync(pl330->ddma.dev);
 	spin_lock_irqsave(&pch->lock, flags);
+
 	spin_lock(&pl330->lock);
 	_stop(pch->thread);
-	spin_unlock(&pl330->lock);
-
 	pch->thread->req[0].desc = NULL;
 	pch->thread->req[1].desc = NULL;
 	pch->thread->req_running = -1;
+	spin_unlock(&pl330->lock);
+
 	power_down = pch->active;
 	pch->active = false;
 

drivers/gpio/gpiolib.h

@@ -30,7 +30,7 @@ struct acpi_gpio_info {
 };
 
 /* gpio suffixes used for ACPI and device tree lookup */
-static const char * const gpio_suffixes[] = { "gpios", "gpio" };
+static __maybe_unused const char * const gpio_suffixes[] = { "gpios", "gpio" };
 
 #ifdef CONFIG_ACPI
 void acpi_gpiochip_add(struct gpio_chip *chip);

drivers/gpu/drm/amd/amdkfd/kfd_process.c

@@ -125,6 +125,8 @@ struct kfd_process *kfd_get_process(const struct task_struct *thread)
 		return ERR_PTR(-EINVAL);
 
 	process = find_process(thread);
+	if (!process)
+		return ERR_PTR(-EINVAL);
 
 	return process;
 }

drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c

@@ -23,6 +23,10 @@
 #ifdef CONFIG_NOUVEAU_PLATFORM_DRIVER
 #include "priv.h"
 
+#if IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU)
+#include <asm/dma-iommu.h>
+#endif
+
 static int
 nvkm_device_tegra_power_up(struct nvkm_device_tegra *tdev)
 {
@@ -85,6 +89,15 @@ nvkm_device_tegra_probe_iommu(struct nvkm_device_tegra *tdev)
 	unsigned long pgsize_bitmap;
 	int ret;
 
+#if IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU)
+	if (dev->archdata.mapping) {
+		struct dma_iommu_mapping *mapping = to_dma_iommu_mapping(dev);
+
+		arm_iommu_detach_device(dev);
+		arm_iommu_release_mapping(mapping);
+	}
+#endif
+
 	if (!tdev->func->iommu_bit)
 		return;
 

drivers/gpu/drm/panel/panel-samsung-s6e8aa0.c

@@ -823,7 +823,7 @@ static void s6e8aa0_read_mtp_id(struct s6e8aa0 *ctx)
 	int ret, i;
 
 	ret = s6e8aa0_dcs_read(ctx, 0xd1, id, ARRAY_SIZE(id));
-	if (ret < ARRAY_SIZE(id) || id[0] == 0x00) {
+	if (ret < 0 || ret < ARRAY_SIZE(id) || id[0] == 0x00) {
 		dev_err(ctx->dev, "read id failed\n");
 		ctx->error = -EIO;
 		return;

drivers/hwtracing/coresight/coresight-tpiu.c

@@ -46,8 +46,9 @@
 
 /** register definition **/
 /* FFSR - 0x300 */
-#define FFSR_FT_STOPPED		BIT(1)
+#define FFSR_FT_STOPPED_BIT	1
 /* FFCR - 0x304 */
+#define FFCR_FON_MAN_BIT	6
 #define FFCR_FON_MAN		BIT(6)
 #define FFCR_STOP_FI		BIT(12)
 
@@ -93,9 +94,9 @@ static void tpiu_disable_hw(struct tpiu_drvdata *drvdata)
 	/* Generate manual flush */
 	writel_relaxed(FFCR_STOP_FI | FFCR_FON_MAN, drvdata->base + TPIU_FFCR);
 	/* Wait for flush to complete */
-	coresight_timeout(drvdata->base, TPIU_FFCR, FFCR_FON_MAN, 0);
+	coresight_timeout(drvdata->base, TPIU_FFCR, FFCR_FON_MAN_BIT, 0);
 	/* Wait for formatter to stop */
-	coresight_timeout(drvdata->base, TPIU_FFSR, FFSR_FT_STOPPED, 1);
+	coresight_timeout(drvdata->base, TPIU_FFSR, FFSR_FT_STOPPED_BIT, 1);
 
 	CS_LOCK(drvdata->base);
 }

drivers/hwtracing/coresight/coresight.c

@@ -87,7 +87,7 @@ static int coresight_find_link_inport(struct coresight_device *csdev)
 	dev_err(&csdev->dev, "couldn't find inport, parent: %s, child: %s\n",
 		dev_name(&parent->dev), dev_name(&csdev->dev));
 
-	return 0;
+	return -ENODEV;
 }
 
 static int coresight_find_link_outport(struct coresight_device *csdev)
@@ -108,7 +108,7 @@ static int coresight_find_link_outport(struct coresight_device *csdev)
 	dev_err(&csdev->dev, "couldn't find outport, parent: %s, child: %s\n",
 		dev_name(&csdev->dev), dev_name(&child->dev));
 
-	return 0;
+	return -ENODEV;
 }
 
 static int coresight_enable_sink(struct coresight_device *csdev)
@@ -156,6 +156,9 @@ static int coresight_enable_link(struct coresight_device *csdev)
 	else
 		refport = 0;
 
+	if (refport < 0)
+		return refport;
+
 	if (atomic_inc_return(&csdev->refcnt[refport]) == 1) {
 		if (link_ops(csdev)->enable) {
 			ret = link_ops(csdev)->enable(csdev, inport, outport);

drivers/infiniband/core/cma.c

@@ -544,6 +544,7 @@ static int cma_resolve_ib_dev(struct rdma_id_private *id_priv)
 	dgid = (union ib_gid *) &addr->sib_addr;
 	pkey = ntohs(addr->sib_pkey);
 
+	mutex_lock(&lock);
 	list_for_each_entry(cur_dev, &dev_list, list) {
 		for (p = 1; p <= cur_dev->device->phys_port_cnt; ++p) {
 			if (!rdma_cap_af_ib(cur_dev->device, p))
@@ -567,18 +568,19 @@ static int cma_resolve_ib_dev(struct rdma_id_private *id_priv)
 					cma_dev = cur_dev;
 					sgid = gid;
 					id_priv->id.port_num = p;
+					goto found;
 				}
 			}
 		}
 	}
-
+	mutex_unlock(&lock);
-	if (!cma_dev)
+	return -ENODEV;
-		return -ENODEV;
 
 found:
 	cma_attach_to_dev(id_priv, cma_dev);
-	addr = (struct sockaddr_ib *) cma_src_addr(id_priv);
+	mutex_unlock(&lock);
-	memcpy(&addr->sib_addr, &sgid, sizeof sgid);
+	addr = (struct sockaddr_ib *)cma_src_addr(id_priv);
+	memcpy(&addr->sib_addr, &sgid, sizeof(sgid));
 	cma_translate_ib(addr, &id_priv->id.route.addr.dev_addr);
 	return 0;
 }

drivers/infiniband/ulp/ipoib/ipoib_cm.c

@@ -992,12 +992,14 @@ static int ipoib_cm_rep_handler(struct ib_cm_id *cm_id, struct ib_cm_event *even
 
 	skb_queue_head_init(&skqueue);
 
+	netif_tx_lock_bh(p->dev);
 	spin_lock_irq(&priv->lock);
 	set_bit(IPOIB_FLAG_OPER_UP, &p->flags);
 	if (p->neigh)
 		while ((skb = __skb_dequeue(&p->neigh->queue)))
 			__skb_queue_tail(&skqueue, skb);
 	spin_unlock_irq(&priv->lock);
+	netif_tx_unlock_bh(p->dev);
 
 	while ((skb = __skb_dequeue(&skqueue))) {
 		skb->dev = p->dev;

drivers/iommu/arm-smmu-v3.c

@@ -1219,6 +1219,7 @@ static irqreturn_t arm_smmu_priq_thread(int irq, void *dev)
 
 	/* Sync our overflow flag, as we believe we're up to speed */
 	q->cons = Q_OVF(q, q->prod) | Q_WRP(q, q->cons) | Q_IDX(q, q->cons);
+	writel(q->cons, q->cons_reg);
 	return IRQ_HANDLED;
 }
 

drivers/media/v4l2-core/videobuf2-core.c

@@ -1366,6 +1366,11 @@ int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb)
 	struct vb2_buffer *vb;
 	int ret;
 
+	if (q->error) {
+		dprintk(1, "fatal error occurred on queue\n");
+		return -EIO;
+	}
+
 	vb = q->bufs[index];
 
 	switch (vb->state) {

drivers/misc/hmc6352.c

@@ -27,6 +27,7 @@
 #include <linux/err.h>
 #include <linux/delay.h>
 #include <linux/sysfs.h>
+#include <linux/nospec.h>
 
 static DEFINE_MUTEX(compass_mutex);
 
@@ -50,6 +51,7 @@ static int compass_store(struct device *dev, const char *buf, size_t count,
 		return ret;
 	if (val >= strlen(map))
 		return -EINVAL;
+	val = array_index_nospec(val, strlen(map));
 	mutex_lock(&compass_mutex);
 	ret = compass_command(c, map[val]);
 	mutex_unlock(&compass_mutex);

drivers/misc/lkdtm.c

@@ -47,11 +47,18 @@
 #include <linux/vmalloc.h>
 #include <linux/mman.h>
 #include <asm/cacheflush.h>
+#include <linux/list.h>
+#include <linux/sched.h>
+#include <linux/uaccess.h>
 
 #ifdef CONFIG_IDE
 #include <linux/ide.h>
 #endif
 
+struct lkdtm_list {
+	struct list_head node;
+};
+
 /*
  * Make sure our attempts to over run the kernel stack doesn't trigger
  * a compiler warning when CONFIG_FRAME_WARN is set. Then make sure we
@@ -88,6 +95,9 @@ enum ctype {
 	CT_EXCEPTION,
 	CT_LOOP,
 	CT_OVERFLOW,
+	CT_CORRUPT_LIST_ADD,
+	CT_CORRUPT_LIST_DEL,
+	CT_CORRUPT_USER_DS,
 	CT_CORRUPT_STACK,
 	CT_UNALIGNED_LOAD_STORE_WRITE,
 	CT_OVERWRITE_ALLOCATION,
@@ -126,6 +136,9 @@ static char* cp_type[] = {
 	"EXCEPTION",
 	"LOOP",
 	"OVERFLOW",
+	"CORRUPT_LIST_ADD",
+	"CORRUPT_LIST_DEL",
+	"CORRUPT_USER_DS",
 	"CORRUPT_STACK",
 	"UNALIGNED_LOAD_STORE_WRITE",
 	"OVERWRITE_ALLOCATION",
@@ -548,6 +561,75 @@ static void lkdtm_do_action(enum ctype which)
 		do_overwritten();
 		break;
 	}
+	case CT_CORRUPT_LIST_ADD: {
+		/*
+		 * Initially, an empty list via LIST_HEAD:
+		 *	test_head.next = &test_head
+		 *	test_head.prev = &test_head
+		 */
+		LIST_HEAD(test_head);
+		struct lkdtm_list good, bad;
+		void *target[2] = { };
+		void *redirection = &target;
+
+		pr_info("attempting good list addition\n");
+
+		/*
+		 * Adding to the list performs these actions:
+		 *	test_head.next->prev = &good.node
+		 *	good.node.next = test_head.next
+		 *	good.node.prev = test_head
+		 *	test_head.next = good.node
+		 */
+		list_add(&good.node, &test_head);
+
+		pr_info("attempting corrupted list addition\n");
+		/*
+		 * In simulating this "write what where" primitive, the "what" is
+		 * the address of &bad.node, and the "where" is the address held
+		 * by "redirection".
+		 */
+		test_head.next = redirection;
+		list_add(&bad.node, &test_head);
+
+		if (target[0] == NULL && target[1] == NULL)
+			pr_err("Overwrite did not happen, but no BUG?!\n");
+		else
+			pr_err("list_add() corruption not detected!\n");
+		break;
+	}
+	case CT_CORRUPT_LIST_DEL: {
+		LIST_HEAD(test_head);
+		struct lkdtm_list item;
+		void *target[2] = { };
+		void *redirection = &target;
+
+		list_add(&item.node, &test_head);
+
+		pr_info("attempting good list removal\n");
+		list_del(&item.node);
+
+		pr_info("attempting corrupted list removal\n");
+		list_add(&item.node, &test_head);
+
+		/* As with the list_add() test above, this corrupts "next". */
+		item.node.next = redirection;
+		list_del(&item.node);
+
+		if (target[0] == NULL && target[1] == NULL)
+			pr_err("Overwrite did not happen, but no BUG?!\n");
+		else
+			pr_err("list_del() corruption not detected!\n");
+		break;
+	}
+	case CT_CORRUPT_USER_DS: {
+		pr_info("setting bad task size limit\n");
+		set_fs(KERNEL_DS);
+
+		/* Make sure we do not keep running with a KERNEL_DS! */
+		force_sig(SIGKILL, current);
+		break;
+	}
 	case CT_NONE:
 	default:
 		break;

drivers/misc/mei/bus-fixup.c

@@ -151,7 +151,7 @@ static int mei_nfc_if_version(struct mei_cl *cl,
 
 	ret = 0;
 	bytes_recv = __mei_cl_recv(cl, (u8 *)reply, if_version_length);
-	if (bytes_recv < if_version_length) {
+	if (bytes_recv < 0 || bytes_recv < if_version_length) {
 		dev_err(bus->dev, "Could not read IF version\n");
 		ret = -EIO;
 		goto err;

drivers/mtd/maps/solutionengine.c

@@ -59,9 +59,9 @@ static int __init init_soleng_maps(void)
 			return -ENXIO;
 		}
 	}
-	printk(KERN_NOTICE "Solution Engine: Flash at 0x%08lx, EPROM at 0x%08lx\n",
+	printk(KERN_NOTICE "Solution Engine: Flash at 0x%pap, EPROM at 0x%pap\n",
-	       soleng_flash_map.phys & 0x1fffffff,
+	       &soleng_flash_map.phys,
-	       soleng_eprom_map.phys & 0x1fffffff);
+	       &soleng_eprom_map.phys);
 	flash_mtd->owner = THIS_MODULE;
 
 	eprom_mtd = do_map_probe("map_rom", &soleng_eprom_map);

drivers/mtd/mtdchar.c

@@ -160,8 +160,12 @@ static ssize_t mtdchar_read(struct file *file, char __user *buf, size_t count,
 
 	pr_debug("MTD_read\n");
 
-	if (*ppos + count > mtd->size)
+	if (*ppos + count > mtd->size) {
-		count = mtd->size - *ppos;
+		if (*ppos < mtd->size)
+			count = mtd->size - *ppos;
+		else
+			count = 0;
+	}
 
 	if (!count)
 		return 0;
@@ -246,7 +250,7 @@ static ssize_t mtdchar_write(struct file *file, const char __user *buf, size_t c
 
 	pr_debug("MTD_write\n");
 
-	if (*ppos == mtd->size)
+	if (*ppos >= mtd->size)
 		return -ENOSPC;
 
 	if (*ppos + count > mtd->size)

drivers/net/ethernet/ti/cpsw.c

@@ -1164,25 +1164,34 @@ static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)
 		cpsw_ale_add_mcast(priv->ale, priv->ndev->broadcast,
 				   1 << slave_port, 0, 0, ALE_MCAST_FWD_2);
 
-	if (slave->data->phy_node)
+	if (slave->data->phy_node) {
 		slave->phy = of_phy_connect(priv->ndev, slave->data->phy_node,
 				 &cpsw_adjust_link, 0, slave->data->phy_if);
-	else
+		if (!slave->phy) {
+			dev_err(priv->dev, "phy \"%s\" not found on slave %d\n",
+				slave->data->phy_node->full_name,
+				slave->slave_num);
+			return;
+		}
+	} else {
 		slave->phy = phy_connect(priv->ndev, slave->data->phy_id,
 				 &cpsw_adjust_link, slave->data->phy_if);
-	if (IS_ERR(slave->phy)) {
+		if (IS_ERR(slave->phy)) {
-		dev_err(priv->dev, "phy %s not found on slave %d\n",
+			dev_err(priv->dev,
-			slave->data->phy_id, slave->slave_num);
+				"phy \"%s\" not found on slave %d, err %ld\n",
-		slave->phy = NULL;
+				slave->data->phy_id, slave->slave_num,
-	} else {
+				PTR_ERR(slave->phy));
-		dev_info(priv->dev, "phy found : id is : 0x%x\n",
+			slave->phy = NULL;
-			 slave->phy->phy_id);
+			return;
-		phy_start(slave->phy);
+		}
-
-		/* Configure GMII_SEL register */
-		cpsw_phy_sel(&priv->pdev->dev, slave->phy->interface,
-			     slave->slave_num);
 	}
+
+	dev_info(priv->dev, "phy found : id is : 0x%x\n", slave->phy->phy_id);
+
+	phy_start(slave->phy);
+
+	/* Configure GMII_SEL register */
+	cpsw_phy_sel(&priv->pdev->dev, slave->phy->interface, slave->slave_num);
 }
 
 static inline void cpsw_add_default_vlan(struct cpsw_priv *priv)

drivers/net/xen-netfront.c

@@ -86,8 +86,7 @@ struct netfront_cb {
 /* IRQ name is queue name with "-tx" or "-rx" appended */
 #define IRQ_NAME_SIZE (QUEUE_NAME_SIZE + 3)
 
-static DECLARE_WAIT_QUEUE_HEAD(module_load_q);
+static DECLARE_WAIT_QUEUE_HEAD(module_wq);
-static DECLARE_WAIT_QUEUE_HEAD(module_unload_q);
 
 struct netfront_stats {
 	u64			packets;
@@ -1336,11 +1335,11 @@ static struct net_device *xennet_create_dev(struct xenbus_device *dev)
 	netif_carrier_off(netdev);
 
 	xenbus_switch_state(dev, XenbusStateInitialising);
-	wait_event(module_load_q,
+	wait_event(module_wq,
-			   xenbus_read_driver_state(dev->otherend) !=
+		   xenbus_read_driver_state(dev->otherend) !=
-			   XenbusStateClosed &&
+		   XenbusStateClosed &&
-			   xenbus_read_driver_state(dev->otherend) !=
+		   xenbus_read_driver_state(dev->otherend) !=
-			   XenbusStateUnknown);
+		   XenbusStateUnknown);
 	return netdev;
 
  exit:
@@ -1608,6 +1607,7 @@ static int xennet_init_queue(struct netfront_queue *queue)
 {
 	unsigned short i;
 	int err = 0;
+	char *devid;
 
 	spin_lock_init(&queue->tx_lock);
 	spin_lock_init(&queue->rx_lock);
@@ -1615,8 +1615,9 @@ static int xennet_init_queue(struct netfront_queue *queue)
 	setup_timer(&queue->rx_refill_timer, rx_refill_timeout,
 		    (unsigned long)queue);
 
-	snprintf(queue->name, sizeof(queue->name), "%s-q%u",
+	devid = strrchr(queue->info->xbdev->nodename, '/') + 1;
-		 queue->info->netdev->name, queue->id);
+	snprintf(queue->name, sizeof(queue->name), "vif%s-q%u",
+		 devid, queue->id);
 
 	/* Initialise tx_skbs as a free chain containing every entry. */
 	queue->tx_skb_freelist = 0;
@@ -2023,15 +2024,14 @@ static void netback_changed(struct xenbus_device *dev,
 
 	dev_dbg(&dev->dev, "%s\n", xenbus_strstate(backend_state));
 
+	wake_up_all(&module_wq);
+
 	switch (backend_state) {
 	case XenbusStateInitialising:
 	case XenbusStateInitialised:
 	case XenbusStateReconfiguring:
 	case XenbusStateReconfigured:
-		break;
-
 	case XenbusStateUnknown:
-		wake_up_all(&module_unload_q);
 		break;
 
 	case XenbusStateInitWait:
@@ -2047,12 +2047,10 @@ static void netback_changed(struct xenbus_device *dev,
 		break;
 
 	case XenbusStateClosed:
-		wake_up_all(&module_unload_q);
 		if (dev->state == XenbusStateClosed)
 			break;
 		/* Missed the backend's CLOSING state -- fallthrough */
 	case XenbusStateClosing:
-		wake_up_all(&module_unload_q);
 		xenbus_frontend_closed(dev);
 		break;
 	}
@@ -2160,14 +2158,14 @@ static int xennet_remove(struct xenbus_device *dev)
 
 	if (xenbus_read_driver_state(dev->otherend) != XenbusStateClosed) {
 		xenbus_switch_state(dev, XenbusStateClosing);
-		wait_event(module_unload_q,
+		wait_event(module_wq,
 			   xenbus_read_driver_state(dev->otherend) ==
 			   XenbusStateClosing ||
 			   xenbus_read_driver_state(dev->otherend) ==
 			   XenbusStateUnknown);
 
 		xenbus_switch_state(dev, XenbusStateClosed);
-		wait_event(module_unload_q,
+		wait_event(module_wq,
 			   xenbus_read_driver_state(dev->otherend) ==
 			   XenbusStateClosed ||
 			   xenbus_read_driver_state(dev->otherend) ==

drivers/parport/parport_sunbpp.c

@@ -286,12 +286,16 @@ static int bpp_probe(struct platform_device *op)
 
 	ops = kmemdup(&parport_sunbpp_ops, sizeof(struct parport_operations),
 		      GFP_KERNEL);
-        if (!ops)
+	if (!ops) {
+		err = -ENOMEM;
 		goto out_unmap;
+	}
 
 	dprintk(("register_port\n"));
-	if (!(p = parport_register_port((unsigned long)base, irq, dma, ops)))
+	if (!(p = parport_register_port((unsigned long)base, irq, dma, ops))) {
+		err = -ENOMEM;
 		goto out_free_ops;
+	}
 
 	p->size = size;
 	p->dev = &op->dev;

drivers/pinctrl/qcom/pinctrl-spmi-gpio.c

@@ -411,31 +411,47 @@ static int pmic_gpio_config_get(struct pinctrl_dev *pctldev,
 
 	switch (param) {
 	case PIN_CONFIG_DRIVE_PUSH_PULL:
-		arg = pad->buffer_type == PMIC_GPIO_OUT_BUF_CMOS;
+		if (pad->buffer_type != PMIC_GPIO_OUT_BUF_CMOS)
+			return -EINVAL;
+		arg = 1;
 		break;
 	case PIN_CONFIG_DRIVE_OPEN_DRAIN:
-		arg = pad->buffer_type == PMIC_GPIO_OUT_BUF_OPEN_DRAIN_NMOS;
+		if (pad->buffer_type != PMIC_GPIO_OUT_BUF_OPEN_DRAIN_NMOS)
+			return -EINVAL;
+		arg = 1;
 		break;
 	case PIN_CONFIG_DRIVE_OPEN_SOURCE:
-		arg = pad->buffer_type == PMIC_GPIO_OUT_BUF_OPEN_DRAIN_PMOS;
+		if (pad->buffer_type != PMIC_GPIO_OUT_BUF_OPEN_DRAIN_PMOS)
+			return -EINVAL;
+		arg = 1;
 		break;
 	case PIN_CONFIG_BIAS_PULL_DOWN:
-		arg = pad->pullup == PMIC_GPIO_PULL_DOWN;
+		if (pad->pullup != PMIC_GPIO_PULL_DOWN)
+			return -EINVAL;
+		arg = 1;
 		break;
 	case PIN_CONFIG_BIAS_DISABLE:
-		arg = pad->pullup = PMIC_GPIO_PULL_DISABLE;
+		if (pad->pullup != PMIC_GPIO_PULL_DISABLE)
+			return -EINVAL;
+		arg = 1;
 		break;
 	case PIN_CONFIG_BIAS_PULL_UP:
-		arg = pad->pullup == PMIC_GPIO_PULL_UP_30;
+		if (pad->pullup != PMIC_GPIO_PULL_UP_30)
+			return -EINVAL;
+		arg = 1;
 		break;
 	case PIN_CONFIG_BIAS_HIGH_IMPEDANCE:
-		arg = !pad->is_enabled;
+		if (pad->is_enabled)
+			return -EINVAL;
+		arg = 1;
 		break;
 	case PIN_CONFIG_POWER_SOURCE:
 		arg = pad->power_source;
 		break;
 	case PIN_CONFIG_INPUT_ENABLE:
-		arg = pad->input_enabled;
+		if (!pad->input_enabled)
+			return -EINVAL;
+		arg = 1;
 		break;
 	case PIN_CONFIG_OUTPUT:
 		arg = pad->out_value;

drivers/platform/x86/toshiba_acpi.c

@@ -34,6 +34,7 @@
 #define TOSHIBA_ACPI_VERSION	"0.23"
 #define PROC_INTERFACE_VERSION	1
 
+#include <linux/compiler.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/init.h>
@@ -1472,7 +1473,7 @@ static const struct file_operations keys_proc_fops = {
 	.write		= keys_proc_write,
 };
 
-static int version_proc_show(struct seq_file *m, void *v)
+static int __maybe_unused version_proc_show(struct seq_file *m, void *v)
 {
 	seq_printf(m, "driver:                  %s\n", TOSHIBA_ACPI_VERSION);
 	seq_printf(m, "proc_interface:          %d\n", PROC_INTERFACE_VERSION);

drivers/rtc/rtc-bq4802.c

@@ -164,6 +164,10 @@ static int bq4802_probe(struct platform_device *pdev)
 	} else if (p->r->flags & IORESOURCE_MEM) {
 		p->regs = devm_ioremap(&pdev->dev, p->r->start,
 					resource_size(p->r));
+		if (!p->regs){
+			err = -ENOMEM;
+			goto out;
+		}
 		p->read = bq4802_read_mem;
 		p->write = bq4802_write_mem;
 	} else {

drivers/s390/net/qeth_core_main.c

@@ -3505,13 +3505,14 @@ static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
 	qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
 	if (atomic_read(&queue->set_pci_flags_count))
 		qdio_flags |= QDIO_FLAG_PCI_OUT;
+	atomic_add(count, &queue->used_buffers);
+
 	rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
 		     queue->queue_no, index, count);
 	if (queue->card->options.performance_stats)
 		queue->card->perf_stats.outbound_do_qdio_time +=
 			qeth_get_micros() -
 			queue->card->perf_stats.outbound_do_qdio_start_time;
-	atomic_add(count, &queue->used_buffers);
 	if (rc) {
 		queue->card->stats.tx_errors += count;
 		/* ignore temporary SIGA errors without busy condition */

drivers/s390/net/qeth_core_sys.c

@@ -419,6 +419,7 @@ static ssize_t qeth_dev_layer2_store(struct device *dev,
 	if (card->discipline) {
 		card->discipline->remove(card->gdev);
 		qeth_core_free_discipline(card);
+		card->options.layer2 = -1;
 	}
 
 	rc = qeth_core_load_discipline(card, newdis);

drivers/usb/class/cdc-wdm.c

@@ -453,7 +453,7 @@ static int clear_wdm_read_flag(struct wdm_device *desc)
 
 	set_bit(WDM_RESPONDING, &desc->flags);
 	spin_unlock_irq(&desc->iuspin);
-	rv = usb_submit_urb(desc->response, GFP_KERNEL);
+	rv = usb_submit_urb(desc->response, GFP_ATOMIC);
 	spin_lock_irq(&desc->iuspin);
 	if (rv) {
 		dev_err(&desc->intf->dev,

drivers/usb/core/hcd-pci.c

@@ -529,8 +529,6 @@ static int resume_common(struct device *dev, int event)
 				event == PM_EVENT_RESTORE);
 		if (retval) {
 			dev_err(dev, "PCI post-resume error %d!\n", retval);
-			if (hcd->shared_hcd)
-				usb_hc_died(hcd->shared_hcd);
 			usb_hc_died(hcd);
 		}
 	}

drivers/usb/core/message.c

@@ -1283,6 +1283,11 @@ void usb_enable_interface(struct usb_device *dev,
  * is submitted that needs that bandwidth.  Some other operating systems
  * allocate bandwidth early, when a configuration is chosen.
  *
+ * xHCI reserves bandwidth and configures the alternate setting in
+ * usb_hcd_alloc_bandwidth(). If it fails the original interface altsetting
+ * may be disabled. Drivers cannot rely on any particular alternate
+ * setting being in effect after a failure.
+ *
  * This call is synchronous, and may not be used in an interrupt context.
  * Also, drivers must not change altsettings while urbs are scheduled for
  * endpoints in that interface; all such urbs must first be completed
@@ -1318,6 +1323,12 @@ int usb_set_interface(struct usb_device *dev, int interface, int alternate)
 			 alternate);
 		return -EINVAL;
 	}
+	/*
+	 * usb3 hosts configure the interface in usb_hcd_alloc_bandwidth,
+	 * including freeing dropped endpoint ring buffers.
+	 * Make sure the interface endpoints are flushed before that
+	 */
+	usb_disable_interface(dev, iface, false);
 
 	/* Make sure we have enough bandwidth for this alternate interface.
 	 * Remove the current alt setting and add the new alt setting.

drivers/usb/core/quirks.c

@@ -37,6 +37,10 @@ static const struct usb_device_id usb_quirk_list[] = {
 	/* CBM - Flash disk */
 	{ USB_DEVICE(0x0204, 0x6025), .driver_info = USB_QUIRK_RESET_RESUME },
 
+	/* WORLDE Controller KS49 or Prodipe MIDI 49C USB controller */
+	{ USB_DEVICE(0x0218, 0x0201), .driver_info =
+			USB_QUIRK_CONFIG_INTF_STRINGS },
+
 	/* WORLDE easy key (easykey.25) MIDI controller  */
 	{ USB_DEVICE(0x0218, 0x0401), .driver_info =
 			USB_QUIRK_CONFIG_INTF_STRINGS },
@@ -259,6 +263,9 @@ static const struct usb_device_id usb_quirk_list[] = {
 	{ USB_DEVICE(0x2040, 0x7200), .driver_info =
 			USB_QUIRK_CONFIG_INTF_STRINGS },
 
+	/* DJI CineSSD */
+	{ USB_DEVICE(0x2ca3, 0x0031), .driver_info = USB_QUIRK_NO_LPM },
+
 	/* INTEL VALUE SSD */
 	{ USB_DEVICE(0x8086, 0xf1a5), .driver_info = USB_QUIRK_RESET_RESUME },
 

drivers/usb/gadget/udc/net2280.c

@@ -1542,11 +1542,14 @@ static int net2280_pullup(struct usb_gadget *_gadget, int is_on)
 		writel(tmp | BIT(USB_DETECT_ENABLE), &dev->usb->usbctl);
 	} else {
 		writel(tmp & ~BIT(USB_DETECT_ENABLE), &dev->usb->usbctl);
-		stop_activity(dev, dev->driver);
+		stop_activity(dev, NULL);
 	}
 
 	spin_unlock_irqrestore(&dev->lock, flags);
 
+	if (!is_on && dev->driver)
+		dev->driver->disconnect(&dev->gadget);
+
 	return 0;
 }
 
@@ -2425,8 +2428,11 @@ static void stop_activity(struct net2280 *dev, struct usb_gadget_driver *driver)
 		nuke(&dev->ep[i]);
 
 	/* report disconnect; the driver is already quiesced */
-	if (driver)
+	if (driver) {
+		spin_unlock(&dev->lock);
 		driver->disconnect(&dev->gadget);
+		spin_lock(&dev->lock);
+	}
 
 	usb_reinit(dev);
 }
@@ -3272,6 +3278,8 @@ next_endpoints:
 		BIT(PCI_RETRY_ABORT_INTERRUPT))
 
 static void handle_stat1_irqs(struct net2280 *dev, u32 stat)
+__releases(dev->lock)
+__acquires(dev->lock)
 {
 	struct net2280_ep	*ep;
 	u32			tmp, num, mask, scratch;
@@ -3312,12 +3320,14 @@ static void handle_stat1_irqs(struct net2280 *dev, u32 stat)
 			if (disconnect || reset) {
 				stop_activity(dev, dev->driver);
 				ep0_start(dev);
+				spin_unlock(&dev->lock);
 				if (reset)
 					usb_gadget_udc_reset
 						(&dev->gadget, dev->driver);
 				else
 					(dev->driver->disconnect)
 						(&dev->gadget);
+				spin_lock(&dev->lock);
 				return;
 			}
 		}
@@ -3336,6 +3346,7 @@ static void handle_stat1_irqs(struct net2280 *dev, u32 stat)
 	tmp = BIT(SUSPEND_REQUEST_CHANGE_INTERRUPT);
 	if (stat & tmp) {
 		writel(tmp, &dev->regs->irqstat1);
+		spin_unlock(&dev->lock);
 		if (stat & BIT(SUSPEND_REQUEST_INTERRUPT)) {
 			if (dev->driver->suspend)
 				dev->driver->suspend(&dev->gadget);
@@ -3346,6 +3357,7 @@ static void handle_stat1_irqs(struct net2280 *dev, u32 stat)
 				dev->driver->resume(&dev->gadget);
 			/* at high speed, note erratum 0133 */
 		}
+		spin_lock(&dev->lock);
 		stat &= ~tmp;
 	}
 

drivers/usb/host/u132-hcd.c

@@ -2565,7 +2565,7 @@ static int u132_get_frame(struct usb_hcd *hcd)
 	} else {
 		int frame = 0;
 		dev_err(&u132->platform_dev->dev, "TODO: u132_get_frame\n");
-		msleep(100);
+		mdelay(100);
 		return frame;
 	}
 }

drivers/usb/misc/uss720.c

@@ -388,7 +388,7 @@ static unsigned char parport_uss720_frob_control(struct parport *pp, unsigned ch
 	mask &= 0x0f;
 	val &= 0x0f;
 	d = (priv->reg[1] & (~mask)) ^ val;
-	if (set_1284_register(pp, 2, d, GFP_KERNEL))
+	if (set_1284_register(pp, 2, d, GFP_ATOMIC))
 		return 0;
 	priv->reg[1] = d;
 	return d & 0xf;
@@ -398,7 +398,7 @@ static unsigned char parport_uss720_read_status(struct parport *pp)
 {
 	unsigned char ret;
 
-	if (get_1284_register(pp, 1, &ret, GFP_KERNEL))
+	if (get_1284_register(pp, 1, &ret, GFP_ATOMIC))
 		return 0;
 	return ret & 0xf8;
 }

drivers/usb/misc/yurex.c

@@ -439,13 +439,13 @@ static ssize_t yurex_write(struct file *file, const char __user *user_buffer,
 {
 	struct usb_yurex *dev;
 	int i, set = 0, retval = 0;
-	char buffer[16];
+	char buffer[16 + 1];
 	char *data = buffer;
 	unsigned long long c, c2 = 0;
 	signed long timeout = 0;
 	DEFINE_WAIT(wait);
 
-	count = min(sizeof(buffer), count);
+	count = min(sizeof(buffer) - 1, count);
 	dev = file->private_data;
 
 	/* verify that we actually have some data to write */
@@ -464,6 +464,7 @@ static ssize_t yurex_write(struct file *file, const char __user *user_buffer,
 		retval = -EFAULT;
 		goto error;
 	}
+	buffer[count] = 0;
 	memset(dev->cntl_buffer, CMD_PADDING, YUREX_BUF_SIZE);
 
 	switch (buffer[0]) {

drivers/usb/serial/io_ti.h

@@ -178,7 +178,7 @@ struct ump_interrupt {
 }  __attribute__((packed));
 
 
-#define TIUMP_GET_PORT_FROM_CODE(c)	(((c) >> 4) - 3)
+#define TIUMP_GET_PORT_FROM_CODE(c)	(((c) >> 6) & 0x01)
 #define TIUMP_GET_FUNC_FROM_CODE(c)	((c) & 0x0f)
 #define TIUMP_INTERRUPT_CODE_LSR	0x03
 #define TIUMP_INTERRUPT_CODE_MSR	0x04

drivers/usb/serial/ti_usb_3410_5052.h

@@ -227,7 +227,7 @@ struct ti_interrupt {
 } __attribute__((packed));
 
 /* Interrupt codes */
-#define TI_GET_PORT_FROM_CODE(c)	(((c) >> 4) - 3)
+#define TI_GET_PORT_FROM_CODE(c)	(((c) >> 6) & 0x01)
 #define TI_GET_FUNC_FROM_CODE(c)	((c) & 0x0f)
 #define TI_CODE_HARDWARE_ERROR		0xFF
 #define TI_CODE_DATA_ERROR		0x03

drivers/usb/storage/scsiglue.c

@@ -341,6 +341,15 @@ static int queuecommand_lck(struct scsi_cmnd *srb,
 		return 0;
 	}
 
+	if ((us->fflags & US_FL_NO_ATA_1X) &&
+			(srb->cmnd[0] == ATA_12 || srb->cmnd[0] == ATA_16)) {
+		memcpy(srb->sense_buffer, usb_stor_sense_invalidCDB,
+		       sizeof(usb_stor_sense_invalidCDB));
+		srb->result = SAM_STAT_CHECK_CONDITION;
+		done(srb);
+		return 0;
+	}
+
 	/* enqueue the command and wake up the control thread */
 	srb->scsi_done = done;
 	us->srb = srb;

drivers/usb/storage/unusual_devs.h

@@ -2213,6 +2213,13 @@ UNUSUAL_DEV(  0x4146, 0xba01, 0x0100, 0x0100,
 		"Micro Mini 1GB",
 		USB_SC_DEVICE, USB_PR_DEVICE, NULL, US_FL_NOT_LOCKABLE ),
 
+/* Reported-by: Tim Anderson <tsa@biglakesoftware.com> */
+UNUSUAL_DEV(  0x2ca3, 0x0031, 0x0000, 0x9999,
+		"DJI",
+		"CineSSD",
+		USB_SC_DEVICE, USB_PR_DEVICE, NULL,
+		US_FL_NO_ATA_1X),
+
 /*
  * Nick Bowler <nbowler@elliptictech.com>
  * SCSI stack spams (otherwise harmless) error messages.

drivers/video/fbdev/core/modedb.c

@@ -644,7 +644,7 @@ static int fb_try_mode(struct fb_var_screeninfo *var, struct fb_info *info,
  *
  *     Valid mode specifiers for @mode_option:
  *
- *     <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m] or
+ *     <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][p][m] or
  *     <name>[-<bpp>][@<refresh>]
  *
  *     with <xres>, <yres>, <bpp> and <refresh> decimal numbers and
@@ -653,10 +653,10 @@ static int fb_try_mode(struct fb_var_screeninfo *var, struct fb_info *info,
  *      If 'M' is present after yres (and before refresh/bpp if present),
  *      the function will compute the timings using VESA(tm) Coordinated
  *      Video Timings (CVT).  If 'R' is present after 'M', will compute with
- *      reduced blanking (for flatpanels).  If 'i' is present, compute
+ *      reduced blanking (for flatpanels).  If 'i' or 'p' are present, compute
- *      interlaced mode.  If 'm' is present, add margins equal to 1.8%
+ *      interlaced or progressive mode.  If 'm' is present, add margins equal
- *      of xres rounded down to 8 pixels, and 1.8% of yres. The char
+ *      to 1.8% of xres rounded down to 8 pixels, and 1.8% of yres. The chars
- *      'i' and 'm' must be after 'M' and 'R'. Example:
+ *      'i', 'p' and 'm' must be after 'M' and 'R'. Example:
  *
  *      1024x768MR-8@60m - Reduced blank with margins at 60Hz.
  *
@@ -697,7 +697,8 @@ int fb_find_mode(struct fb_var_screeninfo *var,
 		unsigned int namelen = strlen(name);
 		int res_specified = 0, bpp_specified = 0, refresh_specified = 0;
 		unsigned int xres = 0, yres = 0, bpp = default_bpp, refresh = 0;
-		int yres_specified = 0, cvt = 0, rb = 0, interlace = 0;
+		int yres_specified = 0, cvt = 0, rb = 0;
+		int interlace_specified = 0, interlace = 0;
 		int margins = 0;
 		u32 best, diff, tdiff;
 
@@ -748,9 +749,17 @@ int fb_find_mode(struct fb_var_screeninfo *var,
 				if (!cvt)
 					margins = 1;
 				break;
+			case 'p':
+				if (!cvt) {
+					interlace = 0;
+					interlace_specified = 1;
+				}
+				break;
 			case 'i':
-				if (!cvt)
+				if (!cvt) {
 					interlace = 1;
+					interlace_specified = 1;
+				}
 				break;
 			default:
 				goto done;
@@ -819,11 +828,21 @@ done:
 			if ((name_matches(db[i], name, namelen) ||
 			     (res_specified && res_matches(db[i], xres, yres))) &&
 			    !fb_try_mode(var, info, &db[i], bpp)) {
-				if (refresh_specified && db[i].refresh == refresh)
+				const int db_interlace = (db[i].vmode &
-					return 1;
+					FB_VMODE_INTERLACED ? 1 : 0);
+				int score = abs(db[i].refresh - refresh);
 
-				if (abs(db[i].refresh - refresh) < diff) {
+				if (interlace_specified)
-					diff = abs(db[i].refresh - refresh);
+					score += abs(db_interlace - interlace);
+
+				if (!interlace_specified ||
+				    db_interlace == interlace)
+					if (refresh_specified &&
+					    db[i].refresh == refresh)
+						return 1;
+
+				if (score < diff) {
+					diff = score;
 					best = i;
 				}
 			}

drivers/video/fbdev/goldfishfb.c

@@ -368,6 +368,7 @@ static int goldfish_fb_remove(struct platform_device *pdev)
 	dma_free_coherent(&pdev->dev, framesize, (void *)fb->fb.screen_base,
 						fb->fb.fix.smem_start);
 	iounmap(fb->reg_base);
+	kfree(fb);
 	return 0;
 }
 

drivers/video/fbdev/omap/omapfb_main.c

@@ -977,7 +977,7 @@ int omapfb_register_client(struct omapfb_notifier_block *omapfb_nb,
 {
 	int r;
 
-	if ((unsigned)omapfb_nb->plane_idx > OMAPFB_PLANE_NUM)
+	if ((unsigned)omapfb_nb->plane_idx >= OMAPFB_PLANE_NUM)
 		return -EINVAL;
 
 	if (!notifier_inited) {

drivers/video/fbdev/via/viafbdev.c

@@ -19,6 +19,7 @@
  * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  */
 
+#include <linux/compiler.h>
 #include <linux/module.h>
 #include <linux/seq_file.h>
 #include <linux/slab.h>
@@ -1468,7 +1469,7 @@ static const struct file_operations viafb_vt1636_proc_fops = {
 
 #endif /* CONFIG_FB_VIA_DIRECT_PROCFS */
 
-static int viafb_sup_odev_proc_show(struct seq_file *m, void *v)
+static int __maybe_unused viafb_sup_odev_proc_show(struct seq_file *m, void *v)
 {
 	via_odev_to_seq(m, supported_odev_map[
 		viaparinfo->shared->chip_info.gfx_chip_name]);

fs/binfmt_elf.c

@@ -1711,7 +1711,7 @@ static int fill_thread_core_info(struct elf_thread_core_info *t,
 		const struct user_regset *regset = &view->regsets[i];
 		do_thread_regset_writeback(t->task, regset);
 		if (regset->core_note_type && regset->get &&
-		    (!regset->active || regset->active(t->task, regset))) {
+		    (!regset->active || regset->active(t->task, regset) > 0)) {
 			int ret;
 			size_t size = regset->n * regset->size;
 			void *data = kmalloc(size, GFP_KERNEL);

fs/cifs/readdir.c

@@ -373,8 +373,15 @@ static char *nxt_dir_entry(char *old_entry, char *end_of_smb, int level)
 
 		new_entry = old_entry + sizeof(FIND_FILE_STANDARD_INFO) +
 				pfData->FileNameLength;
-	} else
+	} else {
-		new_entry = old_entry + le32_to_cpu(pDirInfo->NextEntryOffset);
+		u32 next_offset = le32_to_cpu(pDirInfo->NextEntryOffset);
+
+		if (old_entry + next_offset < old_entry) {
+			cifs_dbg(VFS, "invalid offset %u\n", next_offset);
+			return NULL;
+		}
+		new_entry = old_entry + next_offset;
+	}
 	cifs_dbg(FYI, "new entry %p old entry %p\n", new_entry, old_entry);
 	/* validate that new_entry is not past end of SMB */
 	if (new_entry >= end_of_smb) {

fs/cifs/smb2pdu.c

@@ -2402,33 +2402,38 @@ num_entries(char *bufstart, char *end_of_buf, char **lastentry, size_t size)
 	int len;
 	unsigned int entrycount = 0;
 	unsigned int next_offset = 0;
-	FILE_DIRECTORY_INFO *entryptr;
+	char *entryptr;
+	FILE_DIRECTORY_INFO *dir_info;
 
 	if (bufstart == NULL)
 		return 0;
 
-	entryptr = (FILE_DIRECTORY_INFO *)bufstart;
+	entryptr = bufstart;
 
 	while (1) {
-		entryptr = (FILE_DIRECTORY_INFO *)
+		if (entryptr + next_offset < entryptr ||
-					((char *)entryptr + next_offset);
+		    entryptr + next_offset > end_of_buf ||
-
+		    entryptr + next_offset + size > end_of_buf) {
-		if ((char *)entryptr + size > end_of_buf) {
 			cifs_dbg(VFS, "malformed search entry would overflow\n");
 			break;
 		}
 
-		len = le32_to_cpu(entryptr->FileNameLength);
+		entryptr = entryptr + next_offset;
-		if ((char *)entryptr + len + size > end_of_buf) {
+		dir_info = (FILE_DIRECTORY_INFO *)entryptr;
+
+		len = le32_to_cpu(dir_info->FileNameLength);
+		if (entryptr + len < entryptr ||
+		    entryptr + len > end_of_buf ||
+		    entryptr + len + size > end_of_buf) {
 			cifs_dbg(VFS, "directory entry name would overflow frame end of buf %p\n",
 				 end_of_buf);
 			break;
 		}
 
-		*lastentry = (char *)entryptr;
+		*lastentry = entryptr;
 		entrycount++;
 
-		next_offset = le32_to_cpu(entryptr->NextEntryOffset);
+		next_offset = le32_to_cpu(dir_info->NextEntryOffset);
 		if (!next_offset)
 			break;
 	}

fs/gfs2/bmap.c

@@ -1476,7 +1476,7 @@ int gfs2_write_alloc_required(struct gfs2_inode *ip, u64 offset,
 	end_of_file = (i_size_read(&ip->i_inode) + sdp->sd_sb.sb_bsize - 1) >> shift;
 	lblock = offset >> shift;
 	lblock_stop = (offset + len + sdp->sd_sb.sb_bsize - 1) >> shift;
-	if (lblock_stop > end_of_file)
+	if (lblock_stop > end_of_file && ip != GFS2_I(sdp->sd_rindex))
 		return 1;
 
 	size = (lblock_stop - lblock) << shift;

fs/pstore/ram_core.c

@@ -421,7 +421,12 @@ static void *persistent_ram_vmap(phys_addr_t start, size_t size,
 	vaddr = vmap(pages, page_count, VM_MAP, prot);
 	kfree(pages);
 
-	return vaddr;
+	/*
+	 * Since vmap() uses page granularity, we must add the offset
+	 * into the page here, to get the byte granularity address
+	 * into the mapping to represent the actual "start" location.
+	 */
+	return vaddr + offset_in_page(start);
 }
 
 static void *persistent_ram_iomap(phys_addr_t start, size_t size,
@@ -440,6 +445,11 @@ static void *persistent_ram_iomap(phys_addr_t start, size_t size,
 	else
 		va = ioremap_wc(start, size);
 
+	/*
+	 * Since request_mem_region() and ioremap() are byte-granularity
+	 * there is no need handle anything special like we do when the
+	 * vmap() case in persistent_ram_vmap() above.
+	 */
 	return va;
 }
 
@@ -460,7 +470,7 @@ static int persistent_ram_buffer_map(phys_addr_t start, phys_addr_t size,
 		return -ENOMEM;
 	}
 
-	prz->buffer = prz->vaddr + offset_in_page(start);
+	prz->buffer = prz->vaddr;
 	prz->buffer_size = size - sizeof(struct persistent_ram_buffer);
 
 	return 0;
@@ -507,7 +517,8 @@ void persistent_ram_free(struct persistent_ram_zone *prz)
 
 	if (prz->vaddr) {
 		if (pfn_valid(prz->paddr >> PAGE_SHIFT)) {
-			vunmap(prz->vaddr);
+			/* We must vunmap() at page-granularity. */
+			vunmap(prz->vaddr - offset_in_page(prz->paddr));
 		} else {
 			iounmap(prz->vaddr);
 			release_mem_region(prz->paddr, prz->size);

include/linux/bug.h

@@ -115,4 +115,23 @@ static inline enum bug_trap_type report_bug(unsigned long bug_addr,
 #else
 #define PANIC_CORRUPTION 0
 #endif  /* CONFIG_PANIC_ON_DATA_CORRUPTION */
+
+/*
+ * Since detected data corruption should stop operation on the affected
+ * structures. Return value must be checked and sanely acted on by caller.
+ */
+static inline __must_check bool check_data_corruption(bool v) { return v; }
+#define CHECK_DATA_CORRUPTION(condition, fmt, ...)			 \
+	check_data_corruption(({					 \
+		bool corruption = unlikely(condition);			 \
+		if (corruption) {					 \
+			if (IS_ENABLED(CONFIG_BUG_ON_DATA_CORRUPTION)) { \
+				pr_err(fmt, ##__VA_ARGS__);		 \
+				BUG();					 \
+			} else						 \
+				WARN(1, fmt, ##__VA_ARGS__);		 \
+		}							 \
+		corruption;						 \
+	}))
+
 #endif	/* _LINUX_BUG_H */

include/linux/list.h

@@ -28,27 +28,42 @@ static inline void INIT_LIST_HEAD(struct list_head *list)
 	list->prev = list;
 }
 
+#ifdef CONFIG_DEBUG_LIST
+extern bool __list_add_valid(struct list_head *new,
+			      struct list_head *prev,
+			      struct list_head *next);
+extern bool __list_del_entry_valid(struct list_head *entry);
+#else
+static inline bool __list_add_valid(struct list_head *new,
+				struct list_head *prev,
+				struct list_head *next)
+{
+	return true;
+}
+static inline bool __list_del_entry_valid(struct list_head *entry)
+{
+	return true;
+}
+#endif
+
 /*
  * Insert a new entry between two known consecutive entries.
  *
  * This is only for internal list manipulation where we know
  * the prev/next entries already!
  */
-#ifndef CONFIG_DEBUG_LIST
 static inline void __list_add(struct list_head *new,
 			      struct list_head *prev,
 			      struct list_head *next)
 {
+	if (!__list_add_valid(new, prev, next))
+		return;
+
 	next->prev = new;
 	new->next = next;
 	new->prev = prev;
 	prev->next = new;
 }
-#else
-extern void __list_add(struct list_head *new,
-			      struct list_head *prev,
-			      struct list_head *next);
-#endif
 
 /**
  * list_add - add a new entry
@@ -96,22 +111,20 @@ static inline void __list_del(struct list_head * prev, struct list_head * next)
  * Note: list_empty() on entry does not return true after this, the entry is
  * in an undefined state.
  */
-#ifndef CONFIG_DEBUG_LIST
 static inline void __list_del_entry(struct list_head *entry)
 {
+	if (!__list_del_entry_valid(entry))
+		return;
+
 	__list_del(entry->prev, entry->next);
 }
 
 static inline void list_del(struct list_head *entry)
 {
-	__list_del(entry->prev, entry->next);
+	__list_del_entry(entry);
 	entry->next = LIST_POISON1;
 	entry->prev = LIST_POISON2;
 }
-#else
-extern void __list_del_entry(struct list_head *entry);
-extern void list_del(struct list_head *entry);
-#endif
 
 /**
  * list_replace - replace old entry by new one

include/linux/rculist.h

@@ -45,19 +45,17 @@ static inline void INIT_LIST_HEAD_RCU(struct list_head *list)
  * This is only for internal list manipulation where we know
  * the prev/next entries already!
  */
-#ifndef CONFIG_DEBUG_LIST
 static inline void __list_add_rcu(struct list_head *new,
 		struct list_head *prev, struct list_head *next)
 {
+	if (!__list_add_valid(new, prev, next))
+		return;
+
 	new->next = next;
 	new->prev = prev;
 	rcu_assign_pointer(list_next_rcu(prev), new);
 	next->prev = new;
 }
-#else
-void __list_add_rcu(struct list_head *new,
-		    struct list_head *prev, struct list_head *next);
-#endif
 
 /**
  * list_add_rcu - add a new entry to rcu-protected list

include/linux/syscalls.h

@@ -205,6 +205,26 @@ extern struct trace_event_functions exit_syscall_print_funcs;
 	}								\
 	static inline long SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__))
 
+/*
+ * Called before coming back to user-mode. Returning to user-mode with an
+ * address limit different than USER_DS can allow to overwrite kernel memory.
+ */
+static inline void addr_limit_user_check(void)
+{
+#ifdef TIF_FSCHECK
+	if (!test_thread_flag(TIF_FSCHECK))
+		return;
+#endif
+
+	if (CHECK_DATA_CORRUPTION(!segment_eq(get_fs(), USER_DS),
+				  "Invalid address limit on user-mode return"))
+		force_sig(SIGKILL, current);
+
+#ifdef TIF_FSCHECK
+	clear_thread_flag(TIF_FSCHECK);
+#endif
+}
+
 asmlinkage long sys32_quotactl(unsigned int cmd, const char __user *special,
 			       qid_t id, void __user *addr);
 asmlinkage long sys_time(time_t __user *tloc);

include/uapi/linux/android/binder.h

@@ -246,6 +246,15 @@ struct binder_node_debug_info {
 	__u32            has_weak_ref;
 };
 
+struct binder_node_info_for_ref {
+	__u32            handle;
+	__u32            strong_count;
+	__u32            weak_count;
+	__u32            reserved1;
+	__u32            reserved2;
+	__u32            reserved3;
+};
+
 #define BINDER_WRITE_READ		_IOWR('b', 1, struct binder_write_read)
 #define BINDER_SET_IDLE_TIMEOUT		_IOW('b', 3, __s64)
 #define BINDER_SET_MAX_THREADS		_IOW('b', 5, __u32)
@@ -254,6 +263,7 @@ struct binder_node_debug_info {
 #define BINDER_THREAD_EXIT		_IOW('b', 8, __s32)
 #define BINDER_VERSION			_IOWR('b', 9, struct binder_version)
 #define BINDER_GET_NODE_DEBUG_INFO	_IOWR('b', 11, struct binder_node_debug_info)
+#define BINDER_GET_NODE_INFO_FOR_REF	_IOWR('b', 12, struct binder_node_info_for_ref)
 
 /*
  * NOTE: Two special error codes you should check for when calling

kernel/audit_watch.c

@@ -419,6 +419,13 @@ int audit_add_watch(struct audit_krule *krule, struct list_head **list)
 	struct path parent_path;
 	int h, ret = 0;
 
+	/*
+	 * When we will be calling audit_add_to_parent, krule->watch might have
+	 * been updated and watch might have been freed.
+	 * So we need to keep a reference of watch.
+	 */
+	audit_get_watch(watch);
+
 	mutex_unlock(&audit_filter_mutex);
 
 	/* Avoid calling path_lookup under audit_filter_mutex. */
@@ -427,8 +434,10 @@ int audit_add_watch(struct audit_krule *krule, struct list_head **list)
 	/* caller expects mutex locked */
 	mutex_lock(&audit_filter_mutex);
 
-	if (ret)
+	if (ret) {
+		audit_put_watch(watch);
 		return ret;
+	}
 
 	/* either find an old parent or attach a new one */
 	parent = audit_find_parent(d_backing_inode(parent_path.dentry));
@@ -446,6 +455,7 @@ int audit_add_watch(struct audit_krule *krule, struct list_head **list)
 	*list = &audit_inode_hash[h];
 error:
 	path_put(&parent_path);
+	audit_put_watch(watch);
 	return ret;
 }
 

lib/Kconfig.debug

@@ -2000,6 +2000,16 @@ config PANIC_ON_DATA_CORRUPTION
 	 recoverable data corruption scenarios to system-halting panics,
 	 for easier detection and debug.
 
+config BUG_ON_DATA_CORRUPTION
+	bool "Trigger a BUG when data corruption is detected"
+	select CONFIG_DEBUG_LIST
+	help
+	  Select this option if the kernel should BUG when it encounters
+	  data corruption in kernel memory structures when they get checked
+	  for validity.
+
+	  If unsure, say N.
+
 source "samples/Kconfig"
 
 source "lib/Kconfig.kgdb"

lib/list_debug.c

@@ -2,8 +2,7 @@
  * Copyright 2006, Red Hat, Inc., Dave Jones
  * Released under the General Public License (GPL).
  *
- * This file contains the linked list implementations for
+ * This file contains the linked list validation for DEBUG_LIST.
- * DEBUG_LIST.
  */
 
 #include <linux/export.h>
@@ -14,94 +13,51 @@
 #include <linux/bug.h>
 
 /*
- * Insert a new entry between two known consecutive entries.
+ * Check that the data structures for the list manipulations are reasonably
- *
+ * valid. Failures here indicate memory corruption (and possibly an exploit
- * This is only for internal list manipulation where we know
+ * attempt).
- * the prev/next entries already!
  */
 
-void __list_add(struct list_head *new,
+bool __list_add_valid(struct list_head *new, struct list_head *prev,
-			      struct list_head *prev,
+		      struct list_head *next)
-			      struct list_head *next)
 {
-	WARN(next->prev != prev,
+	if (CHECK_DATA_CORRUPTION(next->prev != prev,
-		"list_add corruption. next->prev should be "
+			"list_add corruption. next->prev should be prev (%p), but was %p. (next=%p).\n",
-		"prev (%p), but was %p. (next=%p).\n",
+			prev, next->prev, next) ||
-		prev, next->prev, next);
+	    CHECK_DATA_CORRUPTION(prev->next != next,
-	WARN(prev->next != next,
+			"list_add corruption. prev->next should be next (%p), but was %p. (prev=%p).\n",
-		"list_add corruption. prev->next should be "
+			next, prev->next, prev) ||
-		"next (%p), but was %p. (prev=%p).\n",
+	    CHECK_DATA_CORRUPTION(new == prev || new == next,
-		next, prev->next, prev);
+			"list_add double add: new=%p, prev=%p, next=%p.\n",
-	WARN(new == prev || new == next,
+			new, prev, next))
-	     "list_add double add: new=%p, prev=%p, next=%p.\n",
+		return false;
-	     new, prev, next);
 
-	BUG_ON((prev->next != next || next->prev != prev ||
+	return true;
-		 new == prev || new == next) && PANIC_CORRUPTION);
-
-	next->prev = new;
-	new->next = next;
-	new->prev = prev;
-	prev->next = new;
 }
-EXPORT_SYMBOL(__list_add);
+EXPORT_SYMBOL(__list_add_valid);
 
-void __list_del_entry(struct list_head *entry)
+bool __list_del_entry_valid(struct list_head *entry)
 {
 	struct list_head *prev, *next;
 
 	prev = entry->prev;
 	next = entry->next;
 
-	if (WARN(next == LIST_POISON1,
+	if (CHECK_DATA_CORRUPTION(next == LIST_POISON1,
-		"list_del corruption, %p->next is LIST_POISON1 (%p)\n",
+			"list_del corruption, %p->next is LIST_POISON1 (%p)\n",
-		entry, LIST_POISON1) ||
+			entry, LIST_POISON1) ||
-	    WARN(prev == LIST_POISON2,
+	    CHECK_DATA_CORRUPTION(prev == LIST_POISON2,
-		"list_del corruption, %p->prev is LIST_POISON2 (%p)\n",
+			"list_del corruption, %p->prev is LIST_POISON2 (%p)\n",
-		entry, LIST_POISON2) ||
+			entry, LIST_POISON2) ||
-	    WARN(prev->next != entry,
+	    CHECK_DATA_CORRUPTION(prev->next != entry,
-		"list_del corruption. prev->next should be %p, "
+			"list_del corruption. prev->next should be %p, but was %p\n",
-		"but was %p\n", entry, prev->next) ||
+			entry, prev->next) ||
-	    WARN(next->prev != entry,
+	    CHECK_DATA_CORRUPTION(next->prev != entry,
-		"list_del corruption. next->prev should be %p, "
+			"list_del corruption. next->prev should be %p, but was %p\n",
-		"but was %p\n", entry, next->prev)) {
+			entry, next->prev))
-		BUG_ON(PANIC_CORRUPTION);
+		return false;
-		return;
-	}
 
-	__list_del(prev, next);
+	return true;
-}
-EXPORT_SYMBOL(__list_del_entry);
 
-/**
- * list_del - deletes entry from list.
- * @entry: the element to delete from the list.
- * Note: list_empty on entry does not return true after this, the entry is
- * in an undefined state.
- */
-void list_del(struct list_head *entry)
-{
-	__list_del_entry(entry);
-	entry->next = LIST_POISON1;
-	entry->prev = LIST_POISON2;
 }
-EXPORT_SYMBOL(list_del);
+EXPORT_SYMBOL(__list_del_entry_valid);
-
-/*
- * RCU variants.
- */
-void __list_add_rcu(struct list_head *new,
-		    struct list_head *prev, struct list_head *next)
-{
-	WARN(next->prev != prev,
-		"list_add_rcu corruption. next->prev should be prev (%p), but was %p. (next=%p).\n",
-		prev, next->prev, next);
-	WARN(prev->next != next,
-		"list_add_rcu corruption. prev->next should be next (%p), but was %p. (prev=%p).\n",
-		next, prev->next, prev);
-	new->next = next;
-	new->prev = prev;
-	rcu_assign_pointer(list_next_rcu(prev), new);
-	next->prev = new;
-}
-EXPORT_SYMBOL(__list_add_rcu);

net/mac80211/cfg.c

@@ -286,7 +286,7 @@ static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 		goto out_unlock;
 	}
 
-	ieee80211_key_free(key, true);
+	ieee80211_key_free(key, sdata->vif.type == NL80211_IFTYPE_STATION);
 
 	ret = 0;
  out_unlock:

net/mac80211/key.c

@@ -647,11 +647,15 @@ int ieee80211_key_link(struct ieee80211_key *key,
 {
 	struct ieee80211_local *local = sdata->local;
 	struct ieee80211_key *old_key;
-	int idx, ret;
+	int idx = key->conf.keyidx;
-	bool pairwise;
+	bool pairwise = key->conf.flags & IEEE80211_KEY_FLAG_PAIRWISE;
-
+	/*
-	pairwise = key->conf.flags & IEEE80211_KEY_FLAG_PAIRWISE;
+	 * We want to delay tailroom updates only for station - in that
-	idx = key->conf.keyidx;
+	 * case it helps roaming speed, but in other cases it hurts and
+	 * can cause warnings to appear.
+	 */
+	bool delay_tailroom = sdata->vif.type == NL80211_IFTYPE_STATION;
+	int ret;
 
 	mutex_lock(&sdata->local->key_mtx);
 
@@ -679,14 +683,14 @@ int ieee80211_key_link(struct ieee80211_key *key,
 	increment_tailroom_need_count(sdata);
 
 	ieee80211_key_replace(sdata, sta, pairwise, old_key, key);
-	ieee80211_key_destroy(old_key, true);
+	ieee80211_key_destroy(old_key, delay_tailroom);
 
 	ieee80211_debugfs_key_add(key);
 
 	if (!local->wowlan) {
 		ret = ieee80211_key_enable_hw_accel(key);
 		if (ret)
-			ieee80211_key_free(key, true);
+			ieee80211_key_free(key, delay_tailroom);
 	} else {
 		ret = 0;
 	}
@@ -874,7 +878,8 @@ void ieee80211_free_sta_keys(struct ieee80211_local *local,
 		ieee80211_key_replace(key->sdata, key->sta,
 				key->conf.flags & IEEE80211_KEY_FLAG_PAIRWISE,
 				key, NULL);
-		__ieee80211_key_destroy(key, true);
+		__ieee80211_key_destroy(key, key->sdata->vif.type ==
+					NL80211_IFTYPE_STATION);
 	}
 
 	for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
@@ -884,7 +889,8 @@ void ieee80211_free_sta_keys(struct ieee80211_local *local,
 		ieee80211_key_replace(key->sdata, key->sta,
 				key->conf.flags & IEEE80211_KEY_FLAG_PAIRWISE,
 				key, NULL);
-		__ieee80211_key_destroy(key, true);
+		__ieee80211_key_destroy(key, key->sdata->vif.type ==
+					NL80211_IFTYPE_STATION);
 	}
 
 	mutex_unlock(&local->key_mtx);

net/xfrm/xfrm_policy.c

@@ -1846,7 +1846,10 @@ xfrm_resolve_and_create_bundle(struct xfrm_policy **pols, int num_pols,
 	/* Try to instantiate a bundle */
 	err = xfrm_tmpl_resolve(pols, num_pols, fl, xfrm, family);
 	if (err <= 0) {
-		if (err != 0 && err != -EAGAIN)
+		if (err == 0)
+			return NULL;
+
+		if (err != -EAGAIN)
 			XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTPOLERROR);
 		return ERR_PTR(err);
 	}

scripts/Kbuild.include

@@ -373,3 +373,6 @@ endif
 endef
 #
 ###############################################################################
+
+# delete partially updated (i.e. corrupted) files on error
+.DELETE_ON_ERROR:

sound/core/pcm_lib.c

@@ -652,27 +652,33 @@ EXPORT_SYMBOL(snd_interval_refine);
 
 static int snd_interval_refine_first(struct snd_interval *i)
 {
+	const unsigned int last_max = i->max;
+
 	if (snd_BUG_ON(snd_interval_empty(i)))
 		return -EINVAL;
 	if (snd_interval_single(i))
 		return 0;
 	i->max = i->min;
-	i->openmax = i->openmin;
+	if (i->openmin)
-	if (i->openmax)
 		i->max++;
+	/* only exclude max value if also excluded before refine */
+	i->openmax = (i->openmax && i->max >= last_max);
 	return 1;
 }
 
 static int snd_interval_refine_last(struct snd_interval *i)
 {
+	const unsigned int last_min = i->min;
+
 	if (snd_BUG_ON(snd_interval_empty(i)))
 		return -EINVAL;
 	if (snd_interval_single(i))
 		return 0;
 	i->min = i->max;
-	i->openmin = i->openmax;
+	if (i->openmax)
-	if (i->openmin)
 		i->min--;
+	/* only exclude min value if also excluded before refine */
+	i->openmin = (i->openmin && i->min <= last_min);
 	return 1;
 }
 

sound/isa/msnd/msnd_pinnacle.c

@@ -82,10 +82,10 @@
 
 static void set_default_audio_parameters(struct snd_msnd *chip)
 {
-	chip->play_sample_size = DEFSAMPLESIZE;
+	chip->play_sample_size = snd_pcm_format_width(DEFSAMPLESIZE);
 	chip->play_sample_rate = DEFSAMPLERATE;
 	chip->play_channels = DEFCHANNELS;
-	chip->capture_sample_size = DEFSAMPLESIZE;
+	chip->capture_sample_size = snd_pcm_format_width(DEFSAMPLESIZE);
 	chip->capture_sample_rate = DEFSAMPLERATE;
 	chip->capture_channels = DEFCHANNELS;
 }

sound/usb/quirks-table.h

@@ -2875,7 +2875,8 @@ YAMAHA_DEVICE(0x7010, "UB99"),
  */
 
 #define AU0828_DEVICE(vid, pid, vname, pname) { \
-	USB_DEVICE_VENDOR_SPEC(vid, pid), \
+	.idVendor = vid, \
+	.idProduct = pid, \
 	.match_flags = USB_DEVICE_ID_MATCH_DEVICE | \
 		       USB_DEVICE_ID_MATCH_INT_CLASS | \
 		       USB_DEVICE_ID_MATCH_INT_SUBCLASS, \

tools/hv/hv_kvp_daemon.c

@@ -286,7 +286,7 @@ static int kvp_key_delete(int pool, const __u8 *key, int key_size)
 		 * Found a match; just move the remaining
 		 * entries up.
 		 */
-		if (i == num_records) {
+		if (i == (num_records - 1)) {
 			kvp_file_info[pool].num_records--;
 			kvp_update_file(pool);
 			return 0;

tools/perf/arch/powerpc/util/skip-callchain-idx.c

@@ -58,9 +58,13 @@ static int check_return_reg(int ra_regno, Dwarf_Frame *frame)
 	}
 
 	/*
-	 * Check if return address is on the stack.
+	 * Check if return address is on the stack. If return address
+	 * is in a register (typically R0), it is yet to be saved on
+	 * the stack.
 	 */
-	if (nops != 0 || ops != NULL)
+	if ((nops != 0 || ops != NULL) &&
+		!(nops == 1 && ops[0].atom == DW_OP_regx &&
+			ops[0].number2 == 0 && ops[0].offset == 0))
 		return 0;
 
 	/*
@@ -246,7 +250,7 @@ int arch_skip_callchain_idx(struct thread *thread, struct ip_callchain *chain)
 	if (!chain || chain->nr < 3)
 		return skip_slot;
 
-	ip = chain->ips[2];
+	ip = chain->ips[1];
 
 	thread__find_addr_location(thread, PERF_RECORD_MISC_USER,
 			MAP__FUNCTION, ip, &al);

tools/testing/selftests/timers/raw_skew.c

@@ -146,6 +146,11 @@ int main(int argv, char **argc)
 	printf(" %lld.%i(act)", ppm/1000, abs((int)(ppm%1000)));
 
 	if (llabs(eppm - ppm) > 1000) {
+		if (tx1.offset || tx2.offset ||
+		    tx1.freq != tx2.freq || tx1.tick != tx2.tick) {
+			printf("	[SKIP]\n");
+			return ksft_exit_skip("The clock was adjusted externally. Shutdown NTPd or other time sync daemons\n");
+		}
 		printf("	[FAILED]\n");
 		return ksft_exit_fail();
 	}