This is the 4.14.69 stable release

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Merge 4.14.69 into android-4.14-p

Changes in 4.14.69
	net: 6lowpan: fix reserved space for single frames
	net: mac802154: tx: expand tailroom if necessary
	9p/net: Fix zero-copy path in the 9p virtio transport
	spi: davinci: fix a NULL pointer dereference
	spi: pxa2xx: Add support for Intel Ice Lake
	spi: spi-fsl-dspi: Fix imprecise abort on VF500 during probe
	spi: cadence: Change usleep_range() to udelay(), for atomic context
	mmc: renesas_sdhi_internal_dmac: fix #define RST_RESERVED_BITS
	readahead: stricter check for bdi io_pages
	block: blk_init_allocated_queue() set q->fq as NULL in the fail case
	block: really disable runtime-pm for blk-mq
	drm/i915/userptr: reject zero user_size
	libertas: fix suspend and resume for SDIO connected cards
	media: Revert "[media] tvp5150: fix pad format frame height"
	mailbox: xgene-slimpro: Fix potential NULL pointer dereference
	Replace magic for trusting the secondary keyring with #define
	Fix kexec forbidding kernels signed with keys in the secondary keyring to boot
	powerpc/fadump: handle crash memory ranges array index overflow
	powerpc/pseries: Fix endianness while restoring of r3 in MCE handler.
	PCI: Add wrappers for dev_printk()
	powerpc/powernv/pci: Work around races in PCI bridge enabling
	cxl: Fix wrong comparison in cxl_adapter_context_get()
	ib_srpt: Fix a use-after-free in srpt_close_ch()
	RDMA/rxe: Set wqe->status correctly if an unexpected response is received
	9p: fix multiple NULL-pointer-dereferences
	fs/9p/xattr.c: catch the error of p9_client_clunk when setting xattr failed
	9p/virtio: fix off-by-one error in sg list bounds check
	net/9p/client.c: version pointer uninitialized
	net/9p/trans_fd.c: fix race-condition by flushing workqueue before the kfree()
	dm integrity: change 'suspending' variable from bool to int
	dm thin: stop no_space_timeout worker when switching to write-mode
	dm cache metadata: save in-core policy_hint_size to on-disk superblock
	dm cache metadata: set dirty on all cache blocks after a crash
	dm crypt: don't decrease device limits
	uart: fix race between uart_put_char() and uart_shutdown()
	Drivers: hv: vmbus: Reset the channel callback in vmbus_onoffer_rescind()
	iio: sca3000: Fix missing return in switch
	iio: ad9523: Fix displayed phase
	iio: ad9523: Fix return value for ad952x_store()
	extcon: Release locking when sending the notification of connector state
	vmw_balloon: fix inflation of 64-bit GFNs
	vmw_balloon: do not use 2MB without batching
	vmw_balloon: VMCI_DOORBELL_SET does not check status
	vmw_balloon: fix VMCI use when balloon built into kernel
	rtc: omap: fix potential crash on power off
	tracing: Do not call start/stop() functions when tracing_on does not change
	tracing/blktrace: Fix to allow setting same value
	printk/tracing: Do not trace printk_nmi_enter()
	livepatch: Validate module/old func name length
	uprobes: Use synchronize_rcu() not synchronize_sched()
	mfd: hi655x: Fix regmap area declared size for hi655x
	ovl: fix wrong use of impure dir cache in ovl_iterate()
	drivers/block/zram/zram_drv.c: fix bug storing backing_dev
	cpufreq: governor: Avoid accessing invalid governor_data
	PM / sleep: wakeup: Fix build error caused by missing SRCU support
	KVM: VMX: fixes for vmentry_l1d_flush module parameter
	KVM: PPC: Book3S: Fix guest DMA when guest partially backed by THP pages
	xtensa: limit offsets in __loop_cache_{all,page}
	xtensa: increase ranges in ___invalidate_{i,d}cache_all
	block, bfq: return nbytes and not zero from struct cftype .write() method
	pnfs/blocklayout: off by one in bl_map_stripe()
	NFSv4 client live hangs after live data migration recovery
	NFSv4: Fix locking in pnfs_generic_recover_commit_reqs
	NFSv4: Fix a sleep in atomic context in nfs4_callback_sequence()
	ARM: tegra: Fix Tegra30 Cardhu PCA954x reset
	mm/tlb: Remove tlb_remove_table() non-concurrent condition
	iommu/vt-d: Add definitions for PFSID
	iommu/vt-d: Fix dev iotlb pfsid use
	sys: don't hold uts_sem while accessing userspace memory
	userns: move user access out of the mutex
	ubifs: Fix memory leak in lprobs self-check
	Revert "UBIFS: Fix potential integer overflow in allocation"
	ubifs: Check data node size before truncate
	ubifs: xattr: Don't operate on deleted inodes
	ubifs: Fix synced_i_size calculation for xattr inodes
	pwm: tiehrpwm: Don't use emulation mode bits to control PWM output
	pwm: tiehrpwm: Fix disabling of output of PWMs
	fb: fix lost console when the user unplugs a USB adapter
	udlfb: set optimal write delay
	getxattr: use correct xattr length
	libnvdimm: fix ars_status output length calculation
	bcache: release dc->writeback_lock properly in bch_writeback_thread()
	cap_inode_getsecurity: use d_find_any_alias() instead of d_find_alias()
	perf auxtrace: Fix queue resize
	crypto: vmx - Fix sleep-in-atomic bugs
	crypto: caam - fix DMA mapping direction for RSA forms 2 & 3
	crypto: caam/jr - fix descriptor DMA unmapping
	crypto: caam/qi - fix error path in xts setkey
	fs/quota: Fix spectre gadget in do_quotactl
	arm64: mm: always enable CONFIG_HOLES_IN_ZONE
	Linux 4.14.69

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

Makefile

@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 VERSION = 4
 PATCHLEVEL = 14
-SUBLEVEL = 68
+SUBLEVEL = 69
 EXTRAVERSION =
 NAME = Petit Gorille
 

arch/alpha/kernel/osf_sys.c

@@ -530,24 +530,19 @@ SYSCALL_DEFINE4(osf_mount, unsigned long, typenr, const char __user *, path,
 SYSCALL_DEFINE1(osf_utsname, char __user *, name)
 {
 	int error;
+	char tmp[5 * 32];
 
 	down_read(&uts_sem);
-	error = -EFAULT;
-	if (copy_to_user(name + 0, utsname()->sysname, 32))
-		goto out;
-	if (copy_to_user(name + 32, utsname()->nodename, 32))
-		goto out;
-	if (copy_to_user(name + 64, utsname()->release, 32))
-		goto out;
-	if (copy_to_user(name + 96, utsname()->version, 32))
-		goto out;
-	if (copy_to_user(name + 128, utsname()->machine, 32))
-		goto out;
+	memcpy(tmp + 0 * 32, utsname()->sysname, 32);
+	memcpy(tmp + 1 * 32, utsname()->nodename, 32);
+	memcpy(tmp + 2 * 32, utsname()->release, 32);
+	memcpy(tmp + 3 * 32, utsname()->version, 32);
+	memcpy(tmp + 4 * 32, utsname()->machine, 32);
+	up_read(&uts_sem);
 
-	error = 0;
- out:
-	up_read(&uts_sem);	
-	return error;
+	if (copy_to_user(name, tmp, sizeof(tmp)))
+		return -EFAULT;
+	return 0;
 }
 
 SYSCALL_DEFINE0(getpagesize)
@@ -567,18 +562,21 @@ SYSCALL_DEFINE2(osf_getdomainname, char __user *, name, int, namelen)
 {
 	int len, err = 0;
 	char *kname;
+	char tmp[32];
 
-	if (namelen > 32)
+	if (namelen < 0 || namelen > 32)
 		namelen = 32;
 
 	down_read(&uts_sem);
 	kname = utsname()->domainname;
 	len = strnlen(kname, namelen);
-	if (copy_to_user(name, kname, min(len + 1, namelen)))
-		err = -EFAULT;
+	len = min(len + 1, namelen);
+	memcpy(tmp, kname, len);
 	up_read(&uts_sem);
 
-	return err;
+	if (copy_to_user(name, tmp, len))
+		return -EFAULT;
+	return 0;
 }
 
 /*
@@ -739,13 +737,14 @@ SYSCALL_DEFINE3(osf_sysinfo, int, command, char __user *, buf, long, count)
 	};
 	unsigned long offset;
 	const char *res;
-	long len, err = -EINVAL;
+	long len;
+	char tmp[__NEW_UTS_LEN + 1];
 
 	offset = command-1;
 	if (offset >= ARRAY_SIZE(sysinfo_table)) {
 		/* Digital UNIX has a few unpublished interfaces here */
 		printk("sysinfo(%d)", command);
-		goto out;
+		return -EINVAL;
 	}
 
 	down_read(&uts_sem);
@@ -753,13 +752,11 @@ SYSCALL_DEFINE3(osf_sysinfo, int, command, char __user *, buf, long, count)
 	len = strlen(res)+1;
 	if ((unsigned long)len > (unsigned long)count)
 		len = count;
-	if (copy_to_user(buf, res, len))
-		err = -EFAULT;
-	else
-		err = 0;
+	memcpy(tmp, res, len);
 	up_read(&uts_sem);
- out:
-	return err;
+	if (copy_to_user(buf, tmp, len))
+		return -EFAULT;
+	return 0;
 }
 
 SYSCALL_DEFINE5(osf_getsysinfo, unsigned long, op, void __user *, buffer,

arch/arm/boot/dts/tegra30-cardhu.dtsi

@@ -206,6 +206,7 @@
 			#address-cells = <1>;
 			#size-cells = <0>;
 			reg = <0x70>;
+			reset-gpio = <&gpio TEGRA_GPIO(BB, 0) GPIO_ACTIVE_LOW>;
 		};
 	};
 

arch/arm64/Kconfig

@@ -694,7 +694,6 @@ config NEED_PER_CPU_EMBED_FIRST_CHUNK
 
 config HOLES_IN_ZONE
 	def_bool y
-	depends on NUMA
 
 source kernel/Kconfig.preempt
 source kernel/Kconfig.hz

arch/powerpc/include/asm/fadump.h

@@ -195,9 +195,6 @@ struct fadump_crash_info_header {
 	struct cpumask	online_mask;
 };
 
-/* Crash memory ranges */
-#define INIT_CRASHMEM_RANGES	(INIT_MEMBLOCK_REGIONS + 2)
-
 struct fad_crash_memory_ranges {
 	unsigned long long	base;
 	unsigned long long	size;

arch/powerpc/kernel/fadump.c

@@ -47,8 +47,10 @@ static struct fadump_mem_struct fdm;
 static const struct fadump_mem_struct *fdm_active;
 
 static DEFINE_MUTEX(fadump_mutex);
-struct fad_crash_memory_ranges crash_memory_ranges[INIT_CRASHMEM_RANGES];
+struct fad_crash_memory_ranges *crash_memory_ranges;
+int crash_memory_ranges_size;
 int crash_mem_ranges;
+int max_crash_mem_ranges;
 
 /* Scan the Firmware Assisted dump configuration details. */
 int __init early_init_dt_scan_fw_dump(unsigned long node,
@@ -843,38 +845,88 @@ static int __init process_fadump(const struct fadump_mem_struct *fdm_active)
 	return 0;
 }
 
-static inline void fadump_add_crash_memory(unsigned long long base,
-					unsigned long long end)
+static void free_crash_memory_ranges(void)
+{
+	kfree(crash_memory_ranges);
+	crash_memory_ranges = NULL;
+	crash_memory_ranges_size = 0;
+	max_crash_mem_ranges = 0;
+}
+
+/*
+ * Allocate or reallocate crash memory ranges array in incremental units
+ * of PAGE_SIZE.
+ */
+static int allocate_crash_memory_ranges(void)
+{
+	struct fad_crash_memory_ranges *new_array;
+	u64 new_size;
+
+	new_size = crash_memory_ranges_size + PAGE_SIZE;
+	pr_debug("Allocating %llu bytes of memory for crash memory ranges\n",
+		 new_size);
+
+	new_array = krealloc(crash_memory_ranges, new_size, GFP_KERNEL);
+	if (new_array == NULL) {
+		pr_err("Insufficient memory for setting up crash memory ranges\n");
+		free_crash_memory_ranges();
+		return -ENOMEM;
+	}
+
+	crash_memory_ranges = new_array;
+	crash_memory_ranges_size = new_size;
+	max_crash_mem_ranges = (new_size /
+				sizeof(struct fad_crash_memory_ranges));
+	return 0;
+}
+
+static inline int fadump_add_crash_memory(unsigned long long base,
+					  unsigned long long end)
 {
 	if (base == end)
-		return;
+		return 0;
+
+	if (crash_mem_ranges == max_crash_mem_ranges) {
+		int ret;
+
+		ret = allocate_crash_memory_ranges();
+		if (ret)
+			return ret;
+	}
 
 	pr_debug("crash_memory_range[%d] [%#016llx-%#016llx], %#llx bytes\n",
 		crash_mem_ranges, base, end - 1, (end - base));
 	crash_memory_ranges[crash_mem_ranges].base = base;
 	crash_memory_ranges[crash_mem_ranges].size = end - base;
 	crash_mem_ranges++;
+	return 0;
 }
 
-static void fadump_exclude_reserved_area(unsigned long long start,
+static int fadump_exclude_reserved_area(unsigned long long start,
 					unsigned long long end)
 {
 	unsigned long long ra_start, ra_end;
+	int ret = 0;
 
 	ra_start = fw_dump.reserve_dump_area_start;
 	ra_end = ra_start + fw_dump.reserve_dump_area_size;
 
 	if ((ra_start < end) && (ra_end > start)) {
 		if ((start < ra_start) && (end > ra_end)) {
-			fadump_add_crash_memory(start, ra_start);
-			fadump_add_crash_memory(ra_end, end);
+			ret = fadump_add_crash_memory(start, ra_start);
+			if (ret)
+				return ret;
+
+			ret = fadump_add_crash_memory(ra_end, end);
 		} else if (start < ra_start) {
-			fadump_add_crash_memory(start, ra_start);
+			ret = fadump_add_crash_memory(start, ra_start);
 		} else if (ra_end < end) {
-			fadump_add_crash_memory(ra_end, end);
+			ret = fadump_add_crash_memory(ra_end, end);
 		}
 	} else
-		fadump_add_crash_memory(start, end);
+		ret = fadump_add_crash_memory(start, end);
+
+	return ret;
 }
 
 static int fadump_init_elfcore_header(char *bufp)
@@ -914,10 +966,11 @@ static int fadump_init_elfcore_header(char *bufp)
  * Traverse through memblock structure and setup crash memory ranges. These
  * ranges will be used create PT_LOAD program headers in elfcore header.
  */
-static void fadump_setup_crash_memory_ranges(void)
+static int fadump_setup_crash_memory_ranges(void)
 {
 	struct memblock_region *reg;
 	unsigned long long start, end;
+	int ret;
 
 	pr_debug("Setup crash memory ranges.\n");
 	crash_mem_ranges = 0;
@@ -928,7 +981,9 @@ static void fadump_setup_crash_memory_ranges(void)
 	 * specified during fadump registration. We need to create a separate
 	 * program header for this chunk with the correct offset.
 	 */
-	fadump_add_crash_memory(RMA_START, fw_dump.boot_memory_size);
+	ret = fadump_add_crash_memory(RMA_START, fw_dump.boot_memory_size);
+	if (ret)
+		return ret;
 
 	for_each_memblock(memory, reg) {
 		start = (unsigned long long)reg->base;
@@ -948,8 +1003,12 @@ static void fadump_setup_crash_memory_ranges(void)
 		}
 
 		/* add this range excluding the reserved dump area. */
-		fadump_exclude_reserved_area(start, end);
+		ret = fadump_exclude_reserved_area(start, end);
+		if (ret)
+			return ret;
 	}
+
+	return 0;
 }
 
 /*
@@ -1072,6 +1131,7 @@ static int register_fadump(void)
 {
 	unsigned long addr;
 	void *vaddr;
+	int ret;
 
 	/*
 	 * If no memory is reserved then we can not register for firmware-
@@ -1080,7 +1140,9 @@ static int register_fadump(void)
 	if (!fw_dump.reserve_dump_area_size)
 		return -ENODEV;
 
-	fadump_setup_crash_memory_ranges();
+	ret = fadump_setup_crash_memory_ranges();
+	if (ret)
+		return ret;
 
 	addr = be64_to_cpu(fdm.rmr_region.destination_address) + be64_to_cpu(fdm.rmr_region.source_len);
 	/* Initialize fadump crash info header. */
@@ -1158,6 +1220,7 @@ void fadump_cleanup(void)
 	} else if (fw_dump.dump_registered) {
 		/* Un-register Firmware-assisted dump if it was registered. */
 		fadump_unregister_dump(&fdm);
+		free_crash_memory_ranges();
 	}
 }
 

arch/powerpc/mm/mmu_context_iommu.c

@@ -130,6 +130,7 @@ long mm_iommu_get(struct mm_struct *mm, unsigned long ua, unsigned long entries,
 	long i, j, ret = 0, locked_entries = 0;
 	unsigned int pageshift;
 	unsigned long flags;
+	unsigned long cur_ua;
 	struct page *page = NULL;
 
 	mutex_lock(&mem_list_mutex);
@@ -178,7 +179,8 @@ long mm_iommu_get(struct mm_struct *mm, unsigned long ua, unsigned long entries,
 	}
 
 	for (i = 0; i < entries; ++i) {
-		if (1 != get_user_pages_fast(ua + (i << PAGE_SHIFT),
+		cur_ua = ua + (i << PAGE_SHIFT);
+		if (1 != get_user_pages_fast(cur_ua,
 					1/* pages */, 1/* iswrite */, &page)) {
 			ret = -EFAULT;
 			for (j = 0; j < i; ++j)
@@ -197,7 +199,7 @@ long mm_iommu_get(struct mm_struct *mm, unsigned long ua, unsigned long entries,
 		if (is_migrate_cma_page(page)) {
 			if (mm_iommu_move_page_from_cma(page))
 				goto populate;
-			if (1 != get_user_pages_fast(ua + (i << PAGE_SHIFT),
+			if (1 != get_user_pages_fast(cur_ua,
 						1/* pages */, 1/* iswrite */,
 						&page)) {
 				ret = -EFAULT;
@@ -211,20 +213,21 @@ long mm_iommu_get(struct mm_struct *mm, unsigned long ua, unsigned long entries,
 		}
 populate:
 		pageshift = PAGE_SHIFT;
-		if (PageCompound(page)) {
+		if (mem->pageshift > PAGE_SHIFT && PageCompound(page)) {
 			pte_t *pte;
 			struct page *head = compound_head(page);
 			unsigned int compshift = compound_order(head);
+			unsigned int pteshift;
 
 			local_irq_save(flags); /* disables as well */
-			pte = find_linux_pte(mm->pgd, ua, NULL, &pageshift);
-			local_irq_restore(flags);
+			pte = find_linux_pte(mm->pgd, cur_ua, NULL, &pteshift);
 
 			/* Double check it is still the same pinned page */
 			if (pte && pte_page(*pte) == head &&
-					pageshift == compshift)
-				pageshift = max_t(unsigned int, pageshift,
+			    pteshift == compshift + PAGE_SHIFT)
+				pageshift = max_t(unsigned int, pteshift,
 						PAGE_SHIFT);
+			local_irq_restore(flags);
 		}
 		mem->pageshift = min(mem->pageshift, pageshift);
 		mem->hpas[i] = page_to_pfn(page) << PAGE_SHIFT;

arch/powerpc/platforms/powernv/pci-ioda.c

@@ -3286,12 +3286,49 @@ static void pnv_pci_ioda_create_dbgfs(void)
 #endif /* CONFIG_DEBUG_FS */
 }
 
+static void pnv_pci_enable_bridge(struct pci_bus *bus)
+{
+	struct pci_dev *dev = bus->self;
+	struct pci_bus *child;
+
+	/* Empty bus ? bail */
+	if (list_empty(&bus->devices))
+		return;
+
+	/*
+	 * If there's a bridge associated with that bus enable it. This works
+	 * around races in the generic code if the enabling is done during
+	 * parallel probing. This can be removed once those races have been
+	 * fixed.
+	 */
+	if (dev) {
+		int rc = pci_enable_device(dev);
+		if (rc)
+			pci_err(dev, "Error enabling bridge (%d)\n", rc);
+		pci_set_master(dev);
+	}
+
+	/* Perform the same to child busses */
+	list_for_each_entry(child, &bus->children, node)
+		pnv_pci_enable_bridge(child);
+}
+
+static void pnv_pci_enable_bridges(void)
+{
+	struct pci_controller *hose;
+
+	list_for_each_entry(hose, &hose_list, list_node)
+		pnv_pci_enable_bridge(hose->bus);
+}
+
 static void pnv_pci_ioda_fixup(void)
 {
 	pnv_pci_ioda_setup_PEs();
 	pnv_pci_ioda_setup_iommu_api();
 	pnv_pci_ioda_create_dbgfs();
 
+	pnv_pci_enable_bridges();
+
 #ifdef CONFIG_EEH
 	eeh_init();
 	eeh_addr_cache_build();

arch/powerpc/platforms/pseries/ras.c

@@ -360,7 +360,7 @@ static struct rtas_error_log *fwnmi_get_errinfo(struct pt_regs *regs)
 	}
 
 	savep = __va(regs->gpr[3]);
-	regs->gpr[3] = savep[0];	/* restore original r3 */
+	regs->gpr[3] = be64_to_cpu(savep[0]);	/* restore original r3 */
 
 	/* If it isn't an extended log we can use the per cpu 64bit buffer */
 	h = (struct rtas_error_log *)&savep[1];

arch/sparc/kernel/sys_sparc_32.c

@@ -204,23 +204,27 @@ SYSCALL_DEFINE5(rt_sigaction, int, sig,
 
 asmlinkage long sys_getdomainname(char __user *name, int len)
 {
- 	int nlen, err;
- 	
+	int nlen, err;
+	char tmp[__NEW_UTS_LEN + 1];
+
 	if (len < 0)
 		return -EINVAL;
 
- 	down_read(&uts_sem);
- 	
+	down_read(&uts_sem);
+
 	nlen = strlen(utsname()->domainname) + 1;
 	err = -EINVAL;
 	if (nlen > len)
-		goto out;
+		goto out_unlock;
+	memcpy(tmp, utsname()->domainname, nlen);
 
-	err = -EFAULT;
-	if (!copy_to_user(name, utsname()->domainname, nlen))
-		err = 0;
+	up_read(&uts_sem);
 
-out:
+	if (copy_to_user(name, tmp, nlen))
+		return -EFAULT;
+	return 0;
+
+out_unlock:
 	up_read(&uts_sem);
 	return err;
 }

arch/sparc/kernel/sys_sparc_64.c

@@ -527,23 +527,27 @@ extern void check_pending(int signum);
 
 SYSCALL_DEFINE2(getdomainname, char __user *, name, int, len)
 {
-        int nlen, err;
+	int nlen, err;
+	char tmp[__NEW_UTS_LEN + 1];
 
 	if (len < 0)
 		return -EINVAL;
 
- 	down_read(&uts_sem);
- 	
+	down_read(&uts_sem);
+
 	nlen = strlen(utsname()->domainname) + 1;
 	err = -EINVAL;
 	if (nlen > len)
-		goto out;
+		goto out_unlock;
+	memcpy(tmp, utsname()->domainname, nlen);
 
-	err = -EFAULT;
-	if (!copy_to_user(name, utsname()->domainname, nlen))
-		err = 0;
+	up_read(&uts_sem);
 
-out:
+	if (copy_to_user(name, tmp, nlen))
+		return -EFAULT;
+	return 0;
+
+out_unlock:
 	up_read(&uts_sem);
 	return err;
 }

arch/x86/kernel/kexec-bzimage64.c

@@ -532,7 +532,7 @@ static int bzImage64_cleanup(void *loader_data)
 static int bzImage64_verify_sig(const char *kernel, unsigned long kernel_len)
 {
 	return verify_pefile_signature(kernel, kernel_len,
-				       NULL,
+				       VERIFY_USE_SECONDARY_KEYRING,
 				       VERIFYING_KEXEC_PE_SIGNATURE);
 }
 #endif

arch/x86/kvm/vmx.c

@@ -200,12 +200,14 @@ static enum vmx_l1d_flush_state __read_mostly vmentry_l1d_flush_param = VMENTER_
 
 static const struct {
 	const char *option;
-	enum vmx_l1d_flush_state cmd;
+	bool for_parse;
 } vmentry_l1d_param[] = {
-	{"auto",	VMENTER_L1D_FLUSH_AUTO},
-	{"never",	VMENTER_L1D_FLUSH_NEVER},
-	{"cond",	VMENTER_L1D_FLUSH_COND},
-	{"always",	VMENTER_L1D_FLUSH_ALWAYS},
+	[VMENTER_L1D_FLUSH_AUTO]	 = {"auto", true},
+	[VMENTER_L1D_FLUSH_NEVER]	 = {"never", true},
+	[VMENTER_L1D_FLUSH_COND]	 = {"cond", true},
+	[VMENTER_L1D_FLUSH_ALWAYS]	 = {"always", true},
+	[VMENTER_L1D_FLUSH_EPT_DISABLED] = {"EPT disabled", false},
+	[VMENTER_L1D_FLUSH_NOT_REQUIRED] = {"not required", false},
 };
 
 #define L1D_CACHE_ORDER 4
@@ -289,8 +291,9 @@ static int vmentry_l1d_flush_parse(const char *s)
 
 	if (s) {
 		for (i = 0; i < ARRAY_SIZE(vmentry_l1d_param); i++) {
-			if (sysfs_streq(s, vmentry_l1d_param[i].option))
-				return vmentry_l1d_param[i].cmd;
+			if (vmentry_l1d_param[i].for_parse &&
+			    sysfs_streq(s, vmentry_l1d_param[i].option))
+				return i;
 		}
 	}
 	return -EINVAL;
@@ -300,13 +303,13 @@ static int vmentry_l1d_flush_set(const char *s, const struct kernel_param *kp)
 {
 	int l1tf, ret;
 
-	if (!boot_cpu_has(X86_BUG_L1TF))
-		return 0;
-
 	l1tf = vmentry_l1d_flush_parse(s);
 	if (l1tf < 0)
 		return l1tf;
 
+	if (!boot_cpu_has(X86_BUG_L1TF))
+		return 0;
+
 	/*
 	 * Has vmx_init() run already? If not then this is the pre init
 	 * parameter parsing. In that case just store the value and let
@@ -326,6 +329,9 @@ static int vmentry_l1d_flush_set(const char *s, const struct kernel_param *kp)
 
 static int vmentry_l1d_flush_get(char *s, const struct kernel_param *kp)
 {
+	if (WARN_ON_ONCE(l1tf_vmx_mitigation >= ARRAY_SIZE(vmentry_l1d_param)))
+		return sprintf(s, "???\n");
+
 	return sprintf(s, "%s\n", vmentry_l1d_param[l1tf_vmx_mitigation].option);
 }
 

arch/xtensa/include/asm/cacheasm.h

@@ -31,16 +31,32 @@
  *
  */
 
-	.macro	__loop_cache_all ar at insn size line_width
+
+	.macro	__loop_cache_unroll ar at insn size line_width max_immed
+
+	.if	(1 << (\line_width)) > (\max_immed)
+	.set	_reps, 1
+	.elseif	(2 << (\line_width)) > (\max_immed)
+	.set	_reps, 2
+	.else
+	.set	_reps, 4
+	.endif
+
+	__loopi	\ar, \at, \size, (_reps << (\line_width))
+	.set	_index, 0
+	.rep	_reps
+	\insn	\ar, _index << (\line_width)
+	.set	_index, _index + 1
+	.endr
+	__endla	\ar, \at, _reps << (\line_width)
+
+	.endm
+
+
+	.macro	__loop_cache_all ar at insn size line_width max_immed
 
 	movi	\ar, 0
-
-	__loopi	\ar, \at, \size, (4 << (\line_width))
-	\insn	\ar, 0 << (\line_width)
-	\insn	\ar, 1 << (\line_width)
-	\insn	\ar, 2 << (\line_width)
-	\insn	\ar, 3 << (\line_width)
-	__endla	\ar, \at, 4 << (\line_width)
+	__loop_cache_unroll \ar, \at, \insn, \size, \line_width, \max_immed
 
 	.endm
 
@@ -57,14 +73,9 @@
 	.endm
 
 
-	.macro	__loop_cache_page ar at insn line_width
+	.macro	__loop_cache_page ar at insn line_width max_immed
 
-	__loopi	\ar, \at, PAGE_SIZE, 4 << (\line_width)
-	\insn	\ar, 0 << (\line_width)
-	\insn	\ar, 1 << (\line_width)
-	\insn	\ar, 2 << (\line_width)
-	\insn	\ar, 3 << (\line_width)
-	__endla	\ar, \at, 4 << (\line_width)
+	__loop_cache_unroll \ar, \at, \insn, PAGE_SIZE, \line_width, \max_immed
 
 	.endm
 
@@ -72,7 +83,8 @@
 	.macro	___unlock_dcache_all ar at
 
 #if XCHAL_DCACHE_LINE_LOCKABLE && XCHAL_DCACHE_SIZE
-	__loop_cache_all \ar \at diu XCHAL_DCACHE_SIZE XCHAL_DCACHE_LINEWIDTH
+	__loop_cache_all \ar \at diu XCHAL_DCACHE_SIZE \
+		XCHAL_DCACHE_LINEWIDTH 240
 #endif
 
 	.endm
@@ -81,7 +93,8 @@
 	.macro	___unlock_icache_all ar at
 
 #if XCHAL_ICACHE_LINE_LOCKABLE && XCHAL_ICACHE_SIZE
-	__loop_cache_all \ar \at iiu XCHAL_ICACHE_SIZE XCHAL_ICACHE_LINEWIDTH
+	__loop_cache_all \ar \at iiu XCHAL_ICACHE_SIZE \
+		XCHAL_ICACHE_LINEWIDTH 240
 #endif
 
 	.endm
@@ -90,7 +103,8 @@
 	.macro	___flush_invalidate_dcache_all ar at
 
 #if XCHAL_DCACHE_SIZE
-	__loop_cache_all \ar \at diwbi XCHAL_DCACHE_SIZE XCHAL_DCACHE_LINEWIDTH
+	__loop_cache_all \ar \at diwbi XCHAL_DCACHE_SIZE \
+		XCHAL_DCACHE_LINEWIDTH 240
 #endif
 
 	.endm
@@ -99,7 +113,8 @@
 	.macro	___flush_dcache_all ar at
 
 #if XCHAL_DCACHE_SIZE
-	__loop_cache_all \ar \at diwb XCHAL_DCACHE_SIZE XCHAL_DCACHE_LINEWIDTH
+	__loop_cache_all \ar \at diwb XCHAL_DCACHE_SIZE \
+		XCHAL_DCACHE_LINEWIDTH 240
 #endif
 
 	.endm
@@ -108,8 +123,8 @@
 	.macro	___invalidate_dcache_all ar at
 
 #if XCHAL_DCACHE_SIZE
-	__loop_cache_all \ar \at dii __stringify(DCACHE_WAY_SIZE) \
-			 XCHAL_DCACHE_LINEWIDTH
+	__loop_cache_all \ar \at dii XCHAL_DCACHE_SIZE \
+			 XCHAL_DCACHE_LINEWIDTH 1020
 #endif
 
 	.endm
@@ -118,8 +133,8 @@
 	.macro	___invalidate_icache_all ar at
 
 #if XCHAL_ICACHE_SIZE
-	__loop_cache_all \ar \at iii __stringify(ICACHE_WAY_SIZE) \
-			 XCHAL_ICACHE_LINEWIDTH
+	__loop_cache_all \ar \at iii XCHAL_ICACHE_SIZE \
+			 XCHAL_ICACHE_LINEWIDTH 1020
 #endif
 
 	.endm
@@ -166,7 +181,7 @@
 	.macro	___flush_invalidate_dcache_page ar as
 
 #if XCHAL_DCACHE_SIZE
-	__loop_cache_page \ar \as dhwbi XCHAL_DCACHE_LINEWIDTH
+	__loop_cache_page \ar \as dhwbi XCHAL_DCACHE_LINEWIDTH 1020
 #endif
 
 	.endm
@@ -175,7 +190,7 @@
 	.macro ___flush_dcache_page ar as
 
 #if XCHAL_DCACHE_SIZE
-	__loop_cache_page \ar \as dhwb XCHAL_DCACHE_LINEWIDTH
+	__loop_cache_page \ar \as dhwb XCHAL_DCACHE_LINEWIDTH 1020
 #endif
 
 	.endm
@@ -184,7 +199,7 @@
 	.macro	___invalidate_dcache_page ar as
 
 #if XCHAL_DCACHE_SIZE
-	__loop_cache_page \ar \as dhi XCHAL_DCACHE_LINEWIDTH
+	__loop_cache_page \ar \as dhi XCHAL_DCACHE_LINEWIDTH 1020
 #endif
 
 	.endm
@@ -193,7 +208,7 @@
 	.macro	___invalidate_icache_page ar as
 
 #if XCHAL_ICACHE_SIZE
-	__loop_cache_page \ar \as ihi XCHAL_ICACHE_LINEWIDTH
+	__loop_cache_page \ar \as ihi XCHAL_ICACHE_LINEWIDTH 1020
 #endif
 
 	.endm

block/bfq-cgroup.c

@@ -887,7 +887,8 @@ static ssize_t bfq_io_set_weight(struct kernfs_open_file *of,
 	if (ret)
 		return ret;
 
-	return bfq_io_set_weight_legacy(of_css(of), NULL, weight);
+	ret = bfq_io_set_weight_legacy(of_css(of), NULL, weight);
+	return ret ?: nbytes;
 }
 
 static int bfqg_print_stat(struct seq_file *sf, void *v)

block/blk-core.c

@@ -1025,6 +1025,7 @@ out_exit_flush_rq:
 		q->exit_rq_fn(q, q->fq->flush_rq);
 out_free_flush_queue:
 	blk_free_flush_queue(q->fq);
+	q->fq = NULL;
 	return -ENOMEM;
 }
 EXPORT_SYMBOL(blk_init_allocated_queue);
@@ -3458,9 +3459,11 @@ EXPORT_SYMBOL(blk_finish_plug);
  */
 void blk_pm_runtime_init(struct request_queue *q, struct device *dev)
 {
-	/* not support for RQF_PM and ->rpm_status in blk-mq yet */
-	if (q->mq_ops)
+	/* Don't enable runtime PM for blk-mq until it is ready */
+	if (q->mq_ops) {
+		pm_runtime_disable(dev);
 		return;
+	}
 
 	q->dev = dev;
 	q->rpm_status = RPM_ACTIVE;

certs/system_keyring.c

@@ -15,6 +15,7 @@
 #include <linux/cred.h>
 #include <linux/err.h>
 #include <linux/slab.h>
+#include <linux/verification.h>
 #include <keys/asymmetric-type.h>
 #include <keys/system_keyring.h>
 #include <crypto/pkcs7.h>
@@ -230,7 +231,7 @@ int verify_pkcs7_signature(const void *data, size_t len,
 
 	if (!trusted_keys) {
 		trusted_keys = builtin_trusted_keys;
-	} else if (trusted_keys == (void *)1UL) {
+	} else if (trusted_keys == VERIFY_USE_SECONDARY_KEYRING) {
 #ifdef CONFIG_SECONDARY_TRUSTED_KEYRING
 		trusted_keys = secondary_trusted_keys;
 #else

crypto/asymmetric_keys/pkcs7_key_type.c

@@ -62,7 +62,7 @@ static int pkcs7_preparse(struct key_preparsed_payload *prep)
 
 	return verify_pkcs7_signature(NULL, 0,
 				      prep->data, prep->datalen,
-				      (void *)1UL, usage,
+				      VERIFY_USE_SECONDARY_KEYRING, usage,
 				      pkcs7_view_content, prep);
 }
 

drivers/block/zram/zram_drv.c

@@ -321,6 +321,7 @@ static ssize_t backing_dev_store(struct device *dev,
 		struct device_attribute *attr, const char *buf, size_t len)
 {
 	char *file_name;
+	size_t sz;
 	struct file *backing_dev = NULL;
 	struct inode *inode;
 	struct address_space *mapping;
@@ -341,7 +342,11 @@ static ssize_t backing_dev_store(struct device *dev,
 		goto out;
 	}
 
-	strlcpy(file_name, buf, len);
+	strlcpy(file_name, buf, PATH_MAX);
+	/* ignore trailing newline */
+	sz = strlen(file_name);
+	if (sz > 0 && file_name[sz - 1] == '\n')
+		file_name[sz - 1] = 0x00;
 
 	backing_dev = filp_open(file_name, O_RDWR|O_LARGEFILE, 0);
 	if (IS_ERR(backing_dev)) {

drivers/cpufreq/cpufreq_governor.c

@@ -555,12 +555,20 @@ EXPORT_SYMBOL_GPL(cpufreq_dbs_governor_stop);
 
 void cpufreq_dbs_governor_limits(struct cpufreq_policy *policy)
 {
-	struct policy_dbs_info *policy_dbs = policy->governor_data;
+	struct policy_dbs_info *policy_dbs;
+
+	/* Protect gov->gdbs_data against cpufreq_dbs_governor_exit() */
+	mutex_lock(&gov_dbs_data_mutex);
+	policy_dbs = policy->governor_data;
+	if (!policy_dbs)
+		goto out;
 
 	mutex_lock(&policy_dbs->update_mutex);
 	cpufreq_policy_apply_limits(policy);
 	gov_update_sample_delay(policy_dbs, 0);
-
 	mutex_unlock(&policy_dbs->update_mutex);
+
+out:
+	mutex_unlock(&gov_dbs_data_mutex);
 }
 EXPORT_SYMBOL_GPL(cpufreq_dbs_governor_limits);

drivers/crypto/caam/caamalg_qi.c

@@ -350,10 +350,8 @@ static int xts_ablkcipher_setkey(struct crypto_ablkcipher *ablkcipher,
 	int ret = 0;
 
 	if (keylen != 2 * AES_MIN_KEY_SIZE  && keylen != 2 * AES_MAX_KEY_SIZE) {
-		crypto_ablkcipher_set_flags(ablkcipher,
-					    CRYPTO_TFM_RES_BAD_KEY_LEN);
 		dev_err(jrdev, "key size mismatch\n");
-		return -EINVAL;
+		goto badkey;
 	}
 
 	memcpy(ctx->key, key, keylen);
@@ -388,7 +386,7 @@ static int xts_ablkcipher_setkey(struct crypto_ablkcipher *ablkcipher,
 	return ret;
 badkey:
 	crypto_ablkcipher_set_flags(ablkcipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
-	return 0;
+	return -EINVAL;
 }
 
 /*

drivers/crypto/caam/caampkc.c

@@ -71,8 +71,8 @@ static void rsa_priv_f2_unmap(struct device *dev, struct rsa_edesc *edesc,
 	dma_unmap_single(dev, pdb->d_dma, key->d_sz, DMA_TO_DEVICE);
 	dma_unmap_single(dev, pdb->p_dma, p_sz, DMA_TO_DEVICE);
 	dma_unmap_single(dev, pdb->q_dma, q_sz, DMA_TO_DEVICE);
-	dma_unmap_single(dev, pdb->tmp1_dma, p_sz, DMA_TO_DEVICE);
-	dma_unmap_single(dev, pdb->tmp2_dma, q_sz, DMA_TO_DEVICE);
+	dma_unmap_single(dev, pdb->tmp1_dma, p_sz, DMA_BIDIRECTIONAL);
+	dma_unmap_single(dev, pdb->tmp2_dma, q_sz, DMA_BIDIRECTIONAL);
 }
 
 static void rsa_priv_f3_unmap(struct device *dev, struct rsa_edesc *edesc,
@@ -90,8 +90,8 @@ static void rsa_priv_f3_unmap(struct device *dev, struct rsa_edesc *edesc,
 	dma_unmap_single(dev, pdb->dp_dma, p_sz, DMA_TO_DEVICE);
 	dma_unmap_single(dev, pdb->dq_dma, q_sz, DMA_TO_DEVICE);
 	dma_unmap_single(dev, pdb->c_dma, p_sz, DMA_TO_DEVICE);
-	dma_unmap_single(dev, pdb->tmp1_dma, p_sz, DMA_TO_DEVICE);
-	dma_unmap_single(dev, pdb->tmp2_dma, q_sz, DMA_TO_DEVICE);
+	dma_unmap_single(dev, pdb->tmp1_dma, p_sz, DMA_BIDIRECTIONAL);
+	dma_unmap_single(dev, pdb->tmp2_dma, q_sz, DMA_BIDIRECTIONAL);
 }
 
 /* RSA Job Completion handler */
@@ -417,13 +417,13 @@ static int set_rsa_priv_f2_pdb(struct akcipher_request *req,
 		goto unmap_p;
 	}
 
-	pdb->tmp1_dma = dma_map_single(dev, key->tmp1, p_sz, DMA_TO_DEVICE);
+	pdb->tmp1_dma = dma_map_single(dev, key->tmp1, p_sz, DMA_BIDIRECTIONAL);
 	if (dma_mapping_error(dev, pdb->tmp1_dma)) {
 		dev_err(dev, "Unable to map RSA tmp1 memory\n");
 		goto unmap_q;
 	}
 
-	pdb->tmp2_dma = dma_map_single(dev, key->tmp2, q_sz, DMA_TO_DEVICE);
+	pdb->tmp2_dma = dma_map_single(dev, key->tmp2, q_sz, DMA_BIDIRECTIONAL);
 	if (dma_mapping_error(dev, pdb->tmp2_dma)) {
 		dev_err(dev, "Unable to map RSA tmp2 memory\n");
 		goto unmap_tmp1;
@@ -451,7 +451,7 @@ static int set_rsa_priv_f2_pdb(struct akcipher_request *req,
 	return 0;
 
 unmap_tmp1:
-	dma_unmap_single(dev, pdb->tmp1_dma, p_sz, DMA_TO_DEVICE);
+	dma_unmap_single(dev, pdb->tmp1_dma, p_sz, DMA_BIDIRECTIONAL);
 unmap_q:
 	dma_unmap_single(dev, pdb->q_dma, q_sz, DMA_TO_DEVICE);
 unmap_p:
@@ -504,13 +504,13 @@ static int set_rsa_priv_f3_pdb(struct akcipher_request *req,
 		goto unmap_dq;
 	}
 
-	pdb->tmp1_dma = dma_map_single(dev, key->tmp1, p_sz, DMA_TO_DEVICE);
+	pdb->tmp1_dma = dma_map_single(dev, key->tmp1, p_sz, DMA_BIDIRECTIONAL);
 	if (dma_mapping_error(dev, pdb->tmp1_dma)) {
 		dev_err(dev, "Unable to map RSA tmp1 memory\n");
 		goto unmap_qinv;
 	}
 
-	pdb->tmp2_dma = dma_map_single(dev, key->tmp2, q_sz, DMA_TO_DEVICE);
+	pdb->tmp2_dma = dma_map_single(dev, key->tmp2, q_sz, DMA_BIDIRECTIONAL);
 	if (dma_mapping_error(dev, pdb->tmp2_dma)) {
 		dev_err(dev, "Unable to map RSA tmp2 memory\n");
 		goto unmap_tmp1;
@@ -538,7 +538,7 @@ static int set_rsa_priv_f3_pdb(struct akcipher_request *req,
 	return 0;
 
 unmap_tmp1:
-	dma_unmap_single(dev, pdb->tmp1_dma, p_sz, DMA_TO_DEVICE);
+	dma_unmap_single(dev, pdb->tmp1_dma, p_sz, DMA_BIDIRECTIONAL);
 unmap_qinv:
 	dma_unmap_single(dev, pdb->c_dma, p_sz, DMA_TO_DEVICE);
 unmap_dq:

drivers/crypto/caam/jr.c

@@ -190,7 +190,8 @@ static void caam_jr_dequeue(unsigned long devarg)
 		BUG_ON(CIRC_CNT(head, tail + i, JOBR_DEPTH) <= 0);
 
 		/* Unmap just-run descriptor so we can post-process */
-		dma_unmap_single(dev, jrp->outring[hw_idx].desc,
+		dma_unmap_single(dev,
+				 caam_dma_to_cpu(jrp->outring[hw_idx].desc),
 				 jrp->entinfo[sw_idx].desc_size,
 				 DMA_TO_DEVICE);
 

drivers/crypto/vmx/aes_cbc.c

@@ -107,24 +107,23 @@ static int p8_aes_cbc_encrypt(struct blkcipher_desc *desc,
 		ret = crypto_skcipher_encrypt(req);
 		skcipher_request_zero(req);
 	} else {
-		preempt_disable();
-		pagefault_disable();
-		enable_kernel_vsx();
-
 		blkcipher_walk_init(&walk, dst, src, nbytes);
 		ret = blkcipher_walk_virt(desc, &walk);
 		while ((nbytes = walk.nbytes)) {
+			preempt_disable();
+			pagefault_disable();
+			enable_kernel_vsx();
 			aes_p8_cbc_encrypt(walk.src.virt.addr,
 					   walk.dst.virt.addr,
 					   nbytes & AES_BLOCK_MASK,
 					   &ctx->enc_key, walk.iv, 1);
+			disable_kernel_vsx();
+			pagefault_enable();
+			preempt_enable();
+
 			nbytes &= AES_BLOCK_SIZE - 1;
 			ret = blkcipher_walk_done(desc, &walk, nbytes);
 		}
-
-		disable_kernel_vsx();
-		pagefault_enable();
-		preempt_enable();
 	}
 
 	return ret;
@@ -147,24 +146,23 @@ static int p8_aes_cbc_decrypt(struct blkcipher_desc *desc,
 		ret = crypto_skcipher_decrypt(req);
 		skcipher_request_zero(req);
 	} else {
-		preempt_disable();
-		pagefault_disable();
-		enable_kernel_vsx();
-
 		blkcipher_walk_init(&walk, dst, src, nbytes);
 		ret = blkcipher_walk_virt(desc, &walk);
 		while ((nbytes = walk.nbytes)) {
+			preempt_disable();
+			pagefault_disable();
+			enable_kernel_vsx();
 			aes_p8_cbc_encrypt(walk.src.virt.addr,
 					   walk.dst.virt.addr,
 					   nbytes & AES_BLOCK_MASK,
 					   &ctx->dec_key, walk.iv, 0);
+			disable_kernel_vsx();
+			pagefault_enable();
+			preempt_enable();
+
 			nbytes &= AES_BLOCK_SIZE - 1;
 			ret = blkcipher_walk_done(desc, &walk, nbytes);
 		}
-
-		disable_kernel_vsx();
-		pagefault_enable();
-		preempt_enable();
 	}
 
 	return ret;

drivers/crypto/vmx/aes_xts.c

@@ -116,32 +116,39 @@ static int p8_aes_xts_crypt(struct blkcipher_desc *desc,
 		ret = enc? crypto_skcipher_encrypt(req) : crypto_skcipher_decrypt(req);
 		skcipher_request_zero(req);
 	} else {
+		blkcipher_walk_init(&walk, dst, src, nbytes);
+
+		ret = blkcipher_walk_virt(desc, &walk);
+
 		preempt_disable();
 		pagefault_disable();
 		enable_kernel_vsx();
 
-		blkcipher_walk_init(&walk, dst, src, nbytes);
-
-		ret = blkcipher_walk_virt(desc, &walk);
 		iv = walk.iv;
 		memset(tweak, 0, AES_BLOCK_SIZE);
 		aes_p8_encrypt(iv, tweak, &ctx->tweak_key);
 
+		disable_kernel_vsx();
+		pagefault_enable();
+		preempt_enable();
+
 		while ((nbytes = walk.nbytes)) {
+			preempt_disable();
+			pagefault_disable();
+			enable_kernel_vsx();
 			if (enc)
 				aes_p8_xts_encrypt(walk.src.virt.addr, walk.dst.virt.addr,
 						nbytes & AES_BLOCK_MASK, &ctx->enc_key, NULL, tweak);
 			else
 				aes_p8_xts_decrypt(walk.src.virt.addr, walk.dst.virt.addr,
 						nbytes & AES_BLOCK_MASK, &ctx->dec_key, NULL, tweak);
+			disable_kernel_vsx();
+			pagefault_enable();
+			preempt_enable();
 
 			nbytes &= AES_BLOCK_SIZE - 1;
 			ret = blkcipher_walk_done(desc, &walk, nbytes);
 		}
-
-		disable_kernel_vsx();
-		pagefault_enable();
-		preempt_enable();
 	}
 	return ret;
 }

drivers/extcon/extcon.c

@@ -433,8 +433,8 @@ int extcon_sync(struct extcon_dev *edev, unsigned int id)
 		return index;
 
 	spin_lock_irqsave(&edev->lock, flags);
-
 	state = !!(edev->state & BIT(index));
+	spin_unlock_irqrestore(&edev->lock, flags);
 
 	/*
 	 * Call functions in a raw notifier chain for the specific one
@@ -448,6 +448,7 @@ int extcon_sync(struct extcon_dev *edev, unsigned int id)
 	 */
 	raw_notifier_call_chain(&edev->nh_all, state, edev);
 
+	spin_lock_irqsave(&edev->lock, flags);
 	/* This could be in interrupt handler */
 	prop_buf = (char *)get_zeroed_page(GFP_ATOMIC);
 	if (!prop_buf) {

drivers/gpu/drm/i915/i915_gem_userptr.c

@@ -782,6 +782,9 @@ i915_gem_userptr_ioctl(struct drm_device *dev, void *data, struct drm_file *file
 			    I915_USERPTR_UNSYNCHRONIZED))
 		return -EINVAL;
 
+	if (!args->user_size)
+		return -EINVAL;
+
 	if (offset_in_page(args->user_ptr | args->user_size))
 		return -EINVAL;
 

drivers/hv/channel.c

@@ -541,11 +541,8 @@ static void reset_channel_cb(void *arg)
 	channel->onchannel_callback = NULL;
 }
 
-static int vmbus_close_internal(struct vmbus_channel *channel)
+void vmbus_reset_channel_cb(struct vmbus_channel *channel)
 {
-	struct vmbus_channel_close_channel *msg;
-	int ret;
-
 	/*
 	 * vmbus_on_event(), running in the per-channel tasklet, can race
 	 * with vmbus_close_internal() in the case of SMP guest, e.g., when
@@ -555,6 +552,29 @@ static int vmbus_close_internal(struct vmbus_channel *channel)
 	 */
 	tasklet_disable(&channel->callback_event);
 
+	channel->sc_creation_callback = NULL;
+
+	/* Stop the callback asap */
+	if (channel->target_cpu != get_cpu()) {
+		put_cpu();
+		smp_call_function_single(channel->target_cpu, reset_channel_cb,
+					 channel, true);
+	} else {
+		reset_channel_cb(channel);
+		put_cpu();
+	}
+
+	/* Re-enable tasklet for use on re-open */
+	tasklet_enable(&channel->callback_event);
+}
+
+static int vmbus_close_internal(struct vmbus_channel *channel)
+{
+	struct vmbus_channel_close_channel *msg;
+	int ret;
+
+	vmbus_reset_channel_cb(channel);
+
 	/*
 	 * In case a device driver's probe() fails (e.g.,
 	 * util_probe() -> vmbus_open() returns -ENOMEM) and the device is
@@ -568,16 +588,6 @@ static int vmbus_close_internal(struct vmbus_channel *channel)
 	}
 
 	channel->state = CHANNEL_OPEN_STATE;
-	channel->sc_creation_callback = NULL;
-	/* Stop callback and cancel the timer asap */
-	if (channel->target_cpu != get_cpu()) {
-		put_cpu();
-		smp_call_function_single(channel->target_cpu, reset_channel_cb,
-					 channel, true);
-	} else {
-		reset_channel_cb(channel);
-		put_cpu();
-	}
 
 	/* Send a closing message */
 
@@ -620,8 +630,6 @@ static int vmbus_close_internal(struct vmbus_channel *channel)
 		get_order(channel->ringbuffer_pagecount * PAGE_SIZE));
 
 out:
-	/* re-enable tasklet for use on re-open */
-	tasklet_enable(&channel->callback_event);
 	return ret;
 }
 

drivers/hv/channel_mgmt.c

@@ -881,6 +881,12 @@ static void vmbus_onoffer_rescind(struct vmbus_channel_message_header *hdr)
 		return;
 	}
 
+	/*
+	 * Before setting channel->rescind in vmbus_rescind_cleanup(), we
+	 * should make sure the channel callback is not running any more.
+	 */
+	vmbus_reset_channel_cb(channel);
+
 	/*
 	 * Now wait for offer handling to complete.
 	 */

drivers/iio/accel/sca3000.c

@@ -797,6 +797,7 @@ static int sca3000_write_raw(struct iio_dev *indio_dev,
 		mutex_lock(&st->lock);
 		ret = sca3000_write_3db_freq(st, val);
 		mutex_unlock(&st->lock);
+		return ret;
 	default:
 		return -EINVAL;
 	}

drivers/iio/frequency/ad9523.c

@@ -508,7 +508,7 @@ static ssize_t ad9523_store(struct device *dev,
 		return ret;
 
 	if (!state)
-		return 0;
+		return len;
 
 	mutex_lock(&indio_dev->mlock);
 	switch ((u32)this_attr->address) {
@@ -642,7 +642,7 @@ static int ad9523_read_raw(struct iio_dev *indio_dev,
 		code = (AD9523_CLK_DIST_DIV_PHASE_REV(ret) * 3141592) /
 			AD9523_CLK_DIST_DIV_REV(ret);
 		*val = code / 1000000;
-		*val2 = (code % 1000000) * 10;
+		*val2 = code % 1000000;
 		return IIO_VAL_INT_PLUS_MICRO;
 	default:
 		return -EINVAL;

drivers/infiniband/sw/rxe/rxe_comp.c

@@ -276,6 +276,7 @@ static inline enum comp_state check_ack(struct rxe_qp *qp,
 	case IB_OPCODE_RC_RDMA_READ_RESPONSE_MIDDLE:
 		if (wqe->wr.opcode != IB_WR_RDMA_READ &&
 		    wqe->wr.opcode != IB_WR_RDMA_READ_WITH_INV) {
+			wqe->status = IB_WC_FATAL_ERR;
 			return COMPST_ERROR;
 		}
 		reset_retry_counters(qp);

drivers/infiniband/ulp/srpt/ib_srpt.c

@@ -1713,8 +1713,7 @@ static bool srpt_close_ch(struct srpt_rdma_ch *ch)
 	int ret;
 
 	if (!srpt_set_ch_state(ch, CH_DRAINING)) {
-		pr_debug("%s-%d: already closed\n", ch->sess_name,
-			 ch->qp->qp_num);
+		pr_debug("%s: already closed\n", ch->sess_name);
 		return false;
 	}
 

drivers/iommu/dmar.c

@@ -1336,8 +1336,8 @@ void qi_flush_iotlb(struct intel_iommu *iommu, u16 did, u64 addr,
 	qi_submit_sync(&desc, iommu);
 }
 
-void qi_flush_dev_iotlb(struct intel_iommu *iommu, u16 sid, u16 qdep,
-			u64 addr, unsigned mask)
+void qi_flush_dev_iotlb(struct intel_iommu *iommu, u16 sid, u16 pfsid,
+			u16 qdep, u64 addr, unsigned mask)
 {
 	struct qi_desc desc;
 
@@ -1352,7 +1352,7 @@ void qi_flush_dev_iotlb(struct intel_iommu *iommu, u16 sid, u16 qdep,
 		qdep = 0;
 
 	desc.low = QI_DEV_IOTLB_SID(sid) | QI_DEV_IOTLB_QDEP(qdep) |
-		   QI_DIOTLB_TYPE;
+		   QI_DIOTLB_TYPE | QI_DEV_IOTLB_PFSID(pfsid);
 
 	qi_submit_sync(&desc, iommu);
 }

drivers/iommu/intel-iommu.c

@@ -422,6 +422,7 @@ struct device_domain_info {
 	struct list_head global; /* link to global list */
 	u8 bus;			/* PCI bus number */
 	u8 devfn;		/* PCI devfn number */
+	u16 pfsid;		/* SRIOV physical function source ID */
 	u8 pasid_supported:3;
 	u8 pasid_enabled:1;
 	u8 pri_supported:1;
@@ -1502,6 +1503,20 @@ static void iommu_enable_dev_iotlb(struct device_domain_info *info)
 		return;
 
 	pdev = to_pci_dev(info->dev);
+	/* For IOMMU that supports device IOTLB throttling (DIT), we assign
+	 * PFSID to the invalidation desc of a VF such that IOMMU HW can gauge
+	 * queue depth at PF level. If DIT is not set, PFSID will be treated as
+	 * reserved, which should be set to 0.
+	 */
+	if (!ecap_dit(info->iommu->ecap))
+		info->pfsid = 0;
+	else {
+		struct pci_dev *pf_pdev;
+
+		/* pdev will be returned if device is not a vf */
+		pf_pdev = pci_physfn(pdev);
+		info->pfsid = PCI_DEVID(pf_pdev->bus->number, pf_pdev->devfn);
+	}
 
 #ifdef CONFIG_INTEL_IOMMU_SVM
 	/* The PCIe spec, in its wisdom, declares that the behaviour of
@@ -1567,7 +1582,8 @@ static void iommu_flush_dev_iotlb(struct dmar_domain *domain,
 
 		sid = info->bus << 8 | info->devfn;
 		qdep = info->ats_qdep;
-		qi_flush_dev_iotlb(info->iommu, sid, qdep, addr, mask);
+		qi_flush_dev_iotlb(info->iommu, sid, info->pfsid,
+				qdep, addr, mask);
 	}
 	spin_unlock_irqrestore(&device_domain_lock, flags);
 }

drivers/mailbox/mailbox-xgene-slimpro.c

@@ -195,9 +195,9 @@ static int slimpro_mbox_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, ctx);
 
 	regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	mb_base = devm_ioremap(&pdev->dev, regs->start, resource_size(regs));
-	if (!mb_base)
-		return -ENOMEM;
+	mb_base = devm_ioremap_resource(&pdev->dev, regs);
+	if (IS_ERR(mb_base))
+		return PTR_ERR(mb_base);
 
 	/* Setup mailbox links */
 	for (i = 0; i < MBOX_CNT; i++) {

drivers/md/bcache/writeback.c

@@ -456,8 +456,10 @@ static int bch_writeback_thread(void *arg)
 			 * data on cache. BCACHE_DEV_DETACHING flag is set in
 			 * bch_cached_dev_detach().
 			 */
-			if (test_bit(BCACHE_DEV_DETACHING, &dc->disk.flags))
+			if (test_bit(BCACHE_DEV_DETACHING, &dc->disk.flags)) {
+				up_write(&dc->writeback_lock);
 				break;
+			}
 		}
 
 		up_write(&dc->writeback_lock);

drivers/md/dm-cache-metadata.c

@@ -362,7 +362,7 @@ static int __write_initial_superblock(struct dm_cache_metadata *cmd)
 	disk_super->version = cpu_to_le32(cmd->version);
 	memset(disk_super->policy_name, 0, sizeof(disk_super->policy_name));
 	memset(disk_super->policy_version, 0, sizeof(disk_super->policy_version));
-	disk_super->policy_hint_size = 0;
+	disk_super->policy_hint_size = cpu_to_le32(0);
 
 	__copy_sm_root(cmd, disk_super);
 
@@ -700,6 +700,7 @@ static int __commit_transaction(struct dm_cache_metadata *cmd,
 	disk_super->policy_version[0] = cpu_to_le32(cmd->policy_version[0]);
 	disk_super->policy_version[1] = cpu_to_le32(cmd->policy_version[1]);
 	disk_super->policy_version[2] = cpu_to_le32(cmd->policy_version[2]);
+	disk_super->policy_hint_size = cpu_to_le32(cmd->policy_hint_size);
 
 	disk_super->read_hits = cpu_to_le32(cmd->stats.read_hits);
 	disk_super->read_misses = cpu_to_le32(cmd->stats.read_misses);
@@ -1321,6 +1322,7 @@ static int __load_mapping_v1(struct dm_cache_metadata *cmd,
 
 	dm_oblock_t oblock;
 	unsigned flags;
+	bool dirty = true;
 
 	dm_array_cursor_get_value(mapping_cursor, (void **) &mapping_value_le);
 	memcpy(&mapping, mapping_value_le, sizeof(mapping));
@@ -1331,8 +1333,10 @@ static int __load_mapping_v1(struct dm_cache_metadata *cmd,
 			dm_array_cursor_get_value(hint_cursor, (void **) &hint_value_le);
 			memcpy(&hint, hint_value_le, sizeof(hint));
 		}
+		if (cmd->clean_when_opened)
+			dirty = flags & M_DIRTY;
 
-		r = fn(context, oblock, to_cblock(cb), flags & M_DIRTY,
+		r = fn(context, oblock, to_cblock(cb), dirty,
 		       le32_to_cpu(hint), hints_valid);
 		if (r) {
 			DMERR("policy couldn't load cache block %llu",
@@ -1360,7 +1364,7 @@ static int __load_mapping_v2(struct dm_cache_metadata *cmd,
 
 	dm_oblock_t oblock;
 	unsigned flags;
-	bool dirty;
+	bool dirty = true;
 
 	dm_array_cursor_get_value(mapping_cursor, (void **) &mapping_value_le);
 	memcpy(&mapping, mapping_value_le, sizeof(mapping));
@@ -1371,8 +1375,9 @@ static int __load_mapping_v2(struct dm_cache_metadata *cmd,
 			dm_array_cursor_get_value(hint_cursor, (void **) &hint_value_le);
 			memcpy(&hint, hint_value_le, sizeof(hint));
 		}
+		if (cmd->clean_when_opened)
+			dirty = dm_bitset_cursor_get_value(dirty_cursor);
 
-		dirty = dm_bitset_cursor_get_value(dirty_cursor);
 		r = fn(context, oblock, to_cblock(cb), dirty,
 		       le32_to_cpu(hint), hints_valid);
 		if (r) {

drivers/md/dm-crypt.c

@@ -3072,11 +3072,11 @@ static void crypt_io_hints(struct dm_target *ti, struct queue_limits *limits)
 	 */
 	limits->max_segment_size = PAGE_SIZE;
 
-	if (cc->sector_size != (1 << SECTOR_SHIFT)) {
-		limits->logical_block_size = cc->sector_size;
-		limits->physical_block_size = cc->sector_size;
-		blk_limits_io_min(limits, cc->sector_size);
-	}
+	limits->logical_block_size =
+		max_t(unsigned short, limits->logical_block_size, cc->sector_size);
+	limits->physical_block_size =
+		max_t(unsigned, limits->physical_block_size, cc->sector_size);
+	limits->io_min = max_t(unsigned, limits->io_min, cc->sector_size);
 }
 
 static struct target_type crypt_target = {

drivers/md/dm-integrity.c

@@ -177,7 +177,7 @@ struct dm_integrity_c {
 	__u8 sectors_per_block;
 
 	unsigned char mode;
-	bool suspending;
+	int suspending;
 
 	int failed;
 
@@ -2209,7 +2209,7 @@ static void dm_integrity_postsuspend(struct dm_target *ti)
 
 	del_timer_sync(&ic->autocommit_timer);
 
-	ic->suspending = true;
+	WRITE_ONCE(ic->suspending, 1);
 
 	queue_work(ic->commit_wq, &ic->commit_work);
 	drain_workqueue(ic->commit_wq);
@@ -2219,7 +2219,7 @@ static void dm_integrity_postsuspend(struct dm_target *ti)
 		dm_integrity_flush_buffers(ic);
 	}
 
-	ic->suspending = false;
+	WRITE_ONCE(ic->suspending, 0);
 
 	BUG_ON(!RB_EMPTY_ROOT(&ic->in_progress));
 

drivers/md/dm-thin.c

@@ -2514,6 +2514,8 @@ static void set_pool_mode(struct pool *pool, enum pool_mode new_mode)
 	case PM_WRITE:
 		if (old_mode != new_mode)
 			notify_of_pool_mode_change(pool, "write");
+		if (old_mode == PM_OUT_OF_DATA_SPACE)
+			cancel_delayed_work_sync(&pool->no_space_timeout);
 		pool->out_of_data_space = false;
 		pool->pf.error_if_no_space = pt->requested_pf.error_if_no_space;
 		dm_pool_metadata_read_write(pool->pmd);

drivers/media/i2c/tvp5150.c

@@ -871,7 +871,7 @@ static int tvp5150_fill_fmt(struct v4l2_subdev *sd,
 	f = &format->format;
 
 	f->width = decoder->rect.width;
-	f->height = decoder->rect.height;
+	f->height = decoder->rect.height / 2;
 
 	f->code = MEDIA_BUS_FMT_UYVY8_2X8;
 	f->field = V4L2_FIELD_ALTERNATE;

drivers/mfd/hi655x-pmic.c

@@ -49,7 +49,7 @@ static struct regmap_config hi655x_regmap_config = {
 	.reg_bits = 32,
 	.reg_stride = HI655X_STRIDE,
 	.val_bits = 8,
-	.max_register = HI655X_BUS_ADDR(0xFFF),
+	.max_register = HI655X_BUS_ADDR(0x400) - HI655X_STRIDE,
 };
 
 static struct resource pwrkey_resources[] = {

drivers/misc/cxl/main.c

@@ -287,7 +287,7 @@ int cxl_adapter_context_get(struct cxl *adapter)
 	int rc;
 
 	rc = atomic_inc_unless_negative(&adapter->contexts_num);
-	return rc >= 0 ? 0 : -EBUSY;
+	return rc ? 0 : -EBUSY;
 }
 
 void cxl_adapter_context_put(struct cxl *adapter)

drivers/misc/vmw_balloon.c

@@ -341,7 +341,13 @@ static bool vmballoon_send_start(struct vmballoon *b, unsigned long req_caps)
 		success = false;
 	}
 
-	if (b->capabilities & VMW_BALLOON_BATCHED_2M_CMDS)
+	/*
+	 * 2MB pages are only supported with batching. If batching is for some
+	 * reason disabled, do not use 2MB pages, since otherwise the legacy
+	 * mechanism is used with 2MB pages, causing a failure.
+	 */
+	if ((b->capabilities & VMW_BALLOON_BATCHED_2M_CMDS) &&
+	    (b->capabilities & VMW_BALLOON_BATCHED_CMDS))
 		b->supported_page_sizes = 2;
 	else
 		b->supported_page_sizes = 1;
@@ -450,7 +456,7 @@ static int vmballoon_send_lock_page(struct vmballoon *b, unsigned long pfn,
 
 	pfn32 = (u32)pfn;
 	if (pfn32 != pfn)
-		return -1;
+		return -EINVAL;
 
 	STATS_INC(b->stats.lock[false]);
 
@@ -460,7 +466,7 @@ static int vmballoon_send_lock_page(struct vmballoon *b, unsigned long pfn,
 
 	pr_debug("%s - ppn %lx, hv returns %ld\n", __func__, pfn, status);
 	STATS_INC(b->stats.lock_fail[false]);
-	return 1;
+	return -EIO;
 }
 
 static int vmballoon_send_batched_lock(struct vmballoon *b,
@@ -597,11 +603,12 @@ static int vmballoon_lock_page(struct vmballoon *b, unsigned int num_pages,
 
 	locked = vmballoon_send_lock_page(b, page_to_pfn(page), &hv_status,
 								target);
-	if (locked > 0) {
+	if (locked) {
 		STATS_INC(b->stats.refused_alloc[false]);
 
-		if (hv_status == VMW_BALLOON_ERROR_RESET ||
-				hv_status == VMW_BALLOON_ERROR_PPN_NOTNEEDED) {
+		if (locked == -EIO &&
+		    (hv_status == VMW_BALLOON_ERROR_RESET ||
+		     hv_status == VMW_BALLOON_ERROR_PPN_NOTNEEDED)) {
 			vmballoon_free_page(page, false);
 			return -EIO;
 		}
@@ -617,7 +624,7 @@ static int vmballoon_lock_page(struct vmballoon *b, unsigned int num_pages,
 		} else {
 			vmballoon_free_page(page, false);
 		}
-		return -EIO;
+		return locked;
 	}
 
 	/* track allocated page */
@@ -1029,29 +1036,30 @@ static void vmballoon_vmci_cleanup(struct vmballoon *b)
  */
 static int vmballoon_vmci_init(struct vmballoon *b)
 {
-	int error = 0;
+	unsigned long error, dummy;
 
-	if ((b->capabilities & VMW_BALLOON_SIGNALLED_WAKEUP_CMD) != 0) {
-		error = vmci_doorbell_create(&b->vmci_doorbell,
-				VMCI_FLAG_DELAYED_CB,
-				VMCI_PRIVILEGE_FLAG_RESTRICTED,
-				vmballoon_doorbell, b);
+	if ((b->capabilities & VMW_BALLOON_SIGNALLED_WAKEUP_CMD) == 0)
+		return 0;
 
-		if (error == VMCI_SUCCESS) {
-			VMWARE_BALLOON_CMD(VMCI_DOORBELL_SET,
-					b->vmci_doorbell.context,
-					b->vmci_doorbell.resource, error);
-			STATS_INC(b->stats.doorbell_set);
-		}
-	}
+	error = vmci_doorbell_create(&b->vmci_doorbell, VMCI_FLAG_DELAYED_CB,
+				     VMCI_PRIVILEGE_FLAG_RESTRICTED,
+				     vmballoon_doorbell, b);
 
-	if (error != 0) {
-		vmballoon_vmci_cleanup(b);
+	if (error != VMCI_SUCCESS)
+		goto fail;
 
-		return -EIO;
-	}
+	error = VMWARE_BALLOON_CMD(VMCI_DOORBELL_SET, b->vmci_doorbell.context,
+				   b->vmci_doorbell.resource, dummy);
+
+	STATS_INC(b->stats.doorbell_set);
+
+	if (error != VMW_BALLOON_SUCCESS)
+		goto fail;
 
 	return 0;
+fail:
+	vmballoon_vmci_cleanup(b);
+	return -EIO;
 }
 
 /*
@@ -1289,7 +1297,14 @@ static int __init vmballoon_init(void)
 
 	return 0;
 }
-module_init(vmballoon_init);
+
+/*
+ * Using late_initcall() instead of module_init() allows the balloon to use the
+ * VMCI doorbell even when the balloon is built into the kernel. Otherwise the
+ * VMCI is probed only after the balloon is initialized. If the balloon is used
+ * as a module, late_initcall() is equivalent to module_init().
+ */
+late_initcall(vmballoon_init);
 
 static void __exit vmballoon_exit(void)
 {

drivers/mmc/host/renesas_sdhi_internal_dmac.c

@@ -44,7 +44,7 @@
 /* DM_CM_RST */
 #define RST_DTRANRST1		BIT(9)
 #define RST_DTRANRST0		BIT(8)
-#define RST_RESERVED_BITS	GENMASK_ULL(32, 0)
+#define RST_RESERVED_BITS	GENMASK_ULL(31, 0)
 
 /* DM_CM_INFO1 and DM_CM_INFO1_MASK */
 #define INFO1_CLEAR		0

drivers/net/wireless/marvell/libertas/dev.h

@@ -104,6 +104,7 @@ struct lbs_private {
 	u8 fw_ready;
 	u8 surpriseremoved;
 	u8 setup_fw_on_resume;
+	u8 power_up_on_resume;
 	int (*hw_host_to_card) (struct lbs_private *priv, u8 type, u8 *payload, u16 nb);
 	void (*reset_card) (struct lbs_private *priv);
 	int (*power_save) (struct lbs_private *priv);

drivers/net/wireless/marvell/libertas/if_sdio.c

@@ -1290,15 +1290,23 @@ static void if_sdio_remove(struct sdio_func *func)
 static int if_sdio_suspend(struct device *dev)
 {
 	struct sdio_func *func = dev_to_sdio_func(dev);
-	int ret;
 	struct if_sdio_card *card = sdio_get_drvdata(func);
+	struct lbs_private *priv = card->priv;
+	int ret;
 
 	mmc_pm_flag_t flags = sdio_get_host_pm_caps(func);
+	priv->power_up_on_resume = false;
 
 	/* If we're powered off anyway, just let the mmc layer remove the
 	 * card. */
-	if (!lbs_iface_active(card->priv))
-		return -ENOSYS;
+	if (!lbs_iface_active(priv)) {
+		if (priv->fw_ready) {
+			priv->power_up_on_resume = true;
+			if_sdio_power_off(card);
+		}
+
+		return 0;
+	}
 
 	dev_info(dev, "%s: suspend: PM flags = 0x%x\n",
 		 sdio_func_id(func), flags);
@@ -1306,9 +1314,14 @@ static int if_sdio_suspend(struct device *dev)
 	/* If we aren't being asked to wake on anything, we should bail out
 	 * and let the SD stack power down the card.
 	 */
-	if (card->priv->wol_criteria == EHS_REMOVE_WAKEUP) {
+	if (priv->wol_criteria == EHS_REMOVE_WAKEUP) {
 		dev_info(dev, "Suspend without wake params -- powering down card\n");
-		return -ENOSYS;
+		if (priv->fw_ready) {
+			priv->power_up_on_resume = true;
+			if_sdio_power_off(card);
+		}
+
+		return 0;
 	}
 
 	if (!(flags & MMC_PM_KEEP_POWER)) {
@@ -1321,7 +1334,7 @@ static int if_sdio_suspend(struct device *dev)
 	if (ret)
 		return ret;
 
-	ret = lbs_suspend(card->priv);
+	ret = lbs_suspend(priv);
 	if (ret)
 		return ret;
 
@@ -1336,6 +1349,11 @@ static int if_sdio_resume(struct device *dev)
 
 	dev_info(dev, "%s: resume: we're back\n", sdio_func_id(func));
 
+	if (card->priv->power_up_on_resume) {
+		if_sdio_power_on(card);
+		wait_event(card->pwron_waitq, card->priv->fw_ready);
+	}
+
 	ret = lbs_resume(card->priv);
 
 	return ret;

drivers/nvdimm/bus.c

@@ -808,9 +808,9 @@ u32 nd_cmd_out_size(struct nvdimm *nvdimm, int cmd,
 		 * overshoots the remainder by 4 bytes, assume it was
 		 * including 'status'.
 		 */
-		if (out_field[1] - 8 == remainder)
+		if (out_field[1] - 4 == remainder)
 			return remainder;
-		return out_field[1] - 4;
+		return out_field[1] - 8;
 	} else if (cmd == ND_CMD_CALL) {
 		struct nd_cmd_pkg *pkg = (struct nd_cmd_pkg *) in_field;
 

drivers/pwm/pwm-tiehrpwm.c

@@ -33,10 +33,6 @@
 #define TBCTL			0x00
 #define TBPRD			0x0A
 
-#define TBCTL_RUN_MASK		(BIT(15) | BIT(14))
-#define TBCTL_STOP_NEXT		0
-#define TBCTL_STOP_ON_CYCLE	BIT(14)
-#define TBCTL_FREE_RUN		(BIT(15) | BIT(14))
 #define TBCTL_PRDLD_MASK	BIT(3)
 #define TBCTL_PRDLD_SHDW	0
 #define TBCTL_PRDLD_IMDT	BIT(3)
@@ -360,7 +356,7 @@ static int ehrpwm_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm)
 	/* Channels polarity can be configured from action qualifier module */
 	configure_polarity(pc, pwm->hwpwm);
 
-	/* Enable TBCLK before enabling PWM device */
+	/* Enable TBCLK */
 	ret = clk_enable(pc->tbclk);
 	if (ret) {
 		dev_err(chip->dev, "Failed to enable TBCLK for %s: %d\n",
@@ -368,9 +364,6 @@ static int ehrpwm_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm)
 		return ret;
 	}
 
-	/* Enable time counter for free_run */
-	ehrpwm_modify(pc->mmio_base, TBCTL, TBCTL_RUN_MASK, TBCTL_FREE_RUN);
-
 	return 0;
 }
 
@@ -388,6 +381,8 @@ static void ehrpwm_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm)
 		aqcsfrc_mask = AQCSFRC_CSFA_MASK;
 	}
 
+	/* Update shadow register first before modifying active register */
+	ehrpwm_modify(pc->mmio_base, AQCSFRC, aqcsfrc_mask, aqcsfrc_val);
 	/*
 	 * Changes to immediate action on Action Qualifier. This puts
 	 * Action Qualifier control on PWM output from next TBCLK
@@ -400,9 +395,6 @@ static void ehrpwm_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm)
 	/* Disabling TBCLK on PWM disable */
 	clk_disable(pc->tbclk);
 
-	/* Stop Time base counter */
-	ehrpwm_modify(pc->mmio_base, TBCTL, TBCTL_RUN_MASK, TBCTL_STOP_NEXT);
-
 	/* Disable clock on PWM disable */
 	pm_runtime_put_sync(chip->dev);
 }

drivers/rtc/rtc-omap.c

@@ -817,13 +817,6 @@ static int omap_rtc_probe(struct platform_device *pdev)
 			goto err;
 	}
 
-	if (rtc->is_pmic_controller) {
-		if (!pm_power_off) {
-			omap_rtc_power_off_rtc = rtc;
-			pm_power_off = omap_rtc_power_off;
-		}
-	}
-
 	/* Support ext_wakeup pinconf */
 	rtc_pinctrl_desc.name = dev_name(&pdev->dev);
 
@@ -833,6 +826,13 @@ static int omap_rtc_probe(struct platform_device *pdev)
 		return PTR_ERR(rtc->pctldev);
 	}
 
+	if (rtc->is_pmic_controller) {
+		if (!pm_power_off) {
+			omap_rtc_power_off_rtc = rtc;
+			pm_power_off = omap_rtc_power_off;
+		}
+	}
+
 	return 0;
 
 err:

drivers/spi/spi-cadence.c

@@ -319,7 +319,7 @@ static void cdns_spi_fill_tx_fifo(struct cdns_spi *xspi)
 		 */
 		if (cdns_spi_read(xspi, CDNS_SPI_ISR) &
 		    CDNS_SPI_IXR_TXFULL)
-			usleep_range(10, 20);
+			udelay(10);
 
 		if (xspi->txbuf)
 			cdns_spi_write(xspi, CDNS_SPI_TXD, *xspi->txbuf++);

drivers/spi/spi-davinci.c

@@ -217,7 +217,7 @@ static void davinci_spi_chipselect(struct spi_device *spi, int value)
 	pdata = &dspi->pdata;
 
 	/* program delay transfers if tx_delay is non zero */
-	if (spicfg->wdelay)
+	if (spicfg && spicfg->wdelay)
 		spidat1 |= SPIDAT1_WDEL;
 
 	/*

drivers/spi/spi-fsl-dspi.c

@@ -1006,21 +1006,6 @@ static int dspi_probe(struct platform_device *pdev)
 		goto out_master_put;
 	}
 
-	dspi_init(dspi);
-	dspi->irq = platform_get_irq(pdev, 0);
-	if (dspi->irq < 0) {
-		dev_err(&pdev->dev, "can't get platform irq\n");
-		ret = dspi->irq;
-		goto out_master_put;
-	}
-
-	ret = devm_request_irq(&pdev->dev, dspi->irq, dspi_interrupt, 0,
-			pdev->name, dspi);
-	if (ret < 0) {
-		dev_err(&pdev->dev, "Unable to attach DSPI interrupt\n");
-		goto out_master_put;
-	}
-
 	dspi->clk = devm_clk_get(&pdev->dev, "dspi");
 	if (IS_ERR(dspi->clk)) {
 		ret = PTR_ERR(dspi->clk);
@@ -1031,6 +1016,21 @@ static int dspi_probe(struct platform_device *pdev)
 	if (ret)
 		goto out_master_put;
 
+	dspi_init(dspi);
+	dspi->irq = platform_get_irq(pdev, 0);
+	if (dspi->irq < 0) {
+		dev_err(&pdev->dev, "can't get platform irq\n");
+		ret = dspi->irq;
+		goto out_clk_put;
+	}
+
+	ret = devm_request_irq(&pdev->dev, dspi->irq, dspi_interrupt, 0,
+			pdev->name, dspi);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "Unable to attach DSPI interrupt\n");
+		goto out_clk_put;
+	}
+
 	if (dspi->devtype_data->trans_mode == DSPI_DMA_MODE) {
 		ret = dspi_request_dma(dspi, res->start);
 		if (ret < 0) {

drivers/spi/spi-pxa2xx.c

@@ -1480,6 +1480,10 @@ static const struct pci_device_id pxa2xx_spi_pci_compound_match[] = {
 	{ PCI_VDEVICE(INTEL, 0x31c2), LPSS_BXT_SSP },
 	{ PCI_VDEVICE(INTEL, 0x31c4), LPSS_BXT_SSP },
 	{ PCI_VDEVICE(INTEL, 0x31c6), LPSS_BXT_SSP },
+	/* ICL-LP */
+	{ PCI_VDEVICE(INTEL, 0x34aa), LPSS_CNL_SSP },
+	{ PCI_VDEVICE(INTEL, 0x34ab), LPSS_CNL_SSP },
+	{ PCI_VDEVICE(INTEL, 0x34fb), LPSS_CNL_SSP },
 	/* APL */
 	{ PCI_VDEVICE(INTEL, 0x5ac2), LPSS_BXT_SSP },
 	{ PCI_VDEVICE(INTEL, 0x5ac4), LPSS_BXT_SSP },

drivers/tty/serial/serial_core.c

@@ -195,6 +195,7 @@ static int uart_port_startup(struct tty_struct *tty, struct uart_state *state,
 {
 	struct uart_port *uport = uart_port_check(state);
 	unsigned long page;
+	unsigned long flags = 0;
 	int retval = 0;
 
 	if (uport->type == PORT_UNKNOWN)
@@ -209,15 +210,18 @@ static int uart_port_startup(struct tty_struct *tty, struct uart_state *state,
 	 * Initialise and allocate the transmit and temporary
 	 * buffer.
 	 */
-	if (!state->xmit.buf) {
-		/* This is protected by the per port mutex */
-		page = get_zeroed_page(GFP_KERNEL);
-		if (!page)
-			return -ENOMEM;
+	page = get_zeroed_page(GFP_KERNEL);
+	if (!page)
+		return -ENOMEM;
 
+	uart_port_lock(state, flags);
+	if (!state->xmit.buf) {
 		state->xmit.buf = (unsigned char *) page;
 		uart_circ_clear(&state->xmit);
+	} else {
+		free_page(page);
 	}
+	uart_port_unlock(uport, flags);
 
 	retval = uport->ops->startup(uport);
 	if (retval == 0) {
@@ -276,6 +280,7 @@ static void uart_shutdown(struct tty_struct *tty, struct uart_state *state)
 {
 	struct uart_port *uport = uart_port_check(state);
 	struct tty_port *port = &state->port;
+	unsigned long flags = 0;
 
 	/*
 	 * Set the TTY IO error marker
@@ -308,10 +313,12 @@ static void uart_shutdown(struct tty_struct *tty, struct uart_state *state)
 	/*
 	 * Free the transmit buffer page.
 	 */
+	uart_port_lock(state, flags);
 	if (state->xmit.buf) {
 		free_page((unsigned long)state->xmit.buf);
 		state->xmit.buf = NULL;
 	}
+	uart_port_unlock(uport, flags);
 }
 
 /**

drivers/video/fbdev/core/fbmem.c

@@ -1716,12 +1716,12 @@ static int do_register_framebuffer(struct fb_info *fb_info)
 	return 0;
 }
 
-static int do_unregister_framebuffer(struct fb_info *fb_info)
+static int unbind_console(struct fb_info *fb_info)
 {
 	struct fb_event event;
-	int i, ret = 0;
+	int ret;
+	int i = fb_info->node;
 
-	i = fb_info->node;
 	if (i < 0 || i >= FB_MAX || registered_fb[i] != fb_info)
 		return -EINVAL;
 
@@ -1736,17 +1736,29 @@ static int do_unregister_framebuffer(struct fb_info *fb_info)
 	unlock_fb_info(fb_info);
 	console_unlock();
 
+	return ret;
+}
+
+static int __unlink_framebuffer(struct fb_info *fb_info);
+
+static int do_unregister_framebuffer(struct fb_info *fb_info)
+{
+	struct fb_event event;
+	int ret;
+
+	ret = unbind_console(fb_info);
+
 	if (ret)
 		return -EINVAL;
 
 	pm_vt_switch_unregister(fb_info->dev);
 
-	unlink_framebuffer(fb_info);
+	__unlink_framebuffer(fb_info);
 	if (fb_info->pixmap.addr &&
 	    (fb_info->pixmap.flags & FB_PIXMAP_DEFAULT))
 		kfree(fb_info->pixmap.addr);
 	fb_destroy_modelist(&fb_info->modelist);
-	registered_fb[i] = NULL;
+	registered_fb[fb_info->node] = NULL;
 	num_registered_fb--;
 	fb_cleanup_device(fb_info);
 	event.info = fb_info;
@@ -1759,7 +1771,7 @@ static int do_unregister_framebuffer(struct fb_info *fb_info)
 	return 0;
 }
 
-int unlink_framebuffer(struct fb_info *fb_info)
+static int __unlink_framebuffer(struct fb_info *fb_info)
 {
 	int i;
 
@@ -1771,6 +1783,20 @@ int unlink_framebuffer(struct fb_info *fb_info)
 		device_destroy(fb_class, MKDEV(FB_MAJOR, i));
 		fb_info->dev = NULL;
 	}
+
+	return 0;
+}
+
+int unlink_framebuffer(struct fb_info *fb_info)
+{
+	int ret;
+
+	ret = __unlink_framebuffer(fb_info);
+	if (ret)
+		return ret;
+
+	unbind_console(fb_info);
+
 	return 0;
 }
 EXPORT_SYMBOL(unlink_framebuffer);

fs/9p/xattr.c

@@ -105,7 +105,7 @@ int v9fs_fid_xattr_set(struct p9_fid *fid, const char *name,
 {
 	struct kvec kvec = {.iov_base = (void *)value, .iov_len = value_len};
 	struct iov_iter from;
-	int retval;
+	int retval, err;
 
 	iov_iter_kvec(&from, WRITE | ITER_KVEC, &kvec, 1, value_len);
 
@@ -126,7 +126,9 @@ int v9fs_fid_xattr_set(struct p9_fid *fid, const char *name,
 			 retval);
 	else
 		p9_client_write(fid, 0, &from, &retval);
-	p9_client_clunk(fid);
+	err = p9_client_clunk(fid);
+	if (!retval && err)
+		retval = err;
 	return retval;
 }
 

fs/nfs/blocklayout/dev.c

@@ -204,7 +204,7 @@ static bool bl_map_stripe(struct pnfs_block_dev *dev, u64 offset,
 	chunk = div_u64(offset, dev->chunk_size);
 	div_u64_rem(chunk, dev->nr_children, &chunk_idx);
 
-	if (chunk_idx > dev->nr_children) {
+	if (chunk_idx >= dev->nr_children) {
 		dprintk("%s: invalid chunk idx %d (%lld/%lld)\n",
 			__func__, chunk_idx, offset, dev->chunk_size);
 		/* error, should not happen */

fs/nfs/callback_proc.c

@@ -433,11 +433,14 @@ validate_seqid(const struct nfs4_slot_table *tbl, const struct nfs4_slot *slot,
  * a match.  If the slot is in use and the sequence numbers match, the
  * client is still waiting for a response to the original request.
  */
-static bool referring_call_exists(struct nfs_client *clp,
+static int referring_call_exists(struct nfs_client *clp,
 				  uint32_t nrclists,
-				  struct referring_call_list *rclists)
+				  struct referring_call_list *rclists,
+				  spinlock_t *lock)
+	__releases(lock)
+	__acquires(lock)
 {
-	bool status = 0;
+	int status = 0;
 	int i, j;
 	struct nfs4_session *session;
 	struct nfs4_slot_table *tbl;
@@ -460,8 +463,10 @@ static bool referring_call_exists(struct nfs_client *clp,
 
 		for (j = 0; j < rclist->rcl_nrefcalls; j++) {
 			ref = &rclist->rcl_refcalls[j];
+			spin_unlock(lock);
 			status = nfs4_slot_wait_on_seqid(tbl, ref->rc_slotid,
 					ref->rc_sequenceid, HZ >> 1) < 0;
+			spin_lock(lock);
 			if (status)
 				goto out;
 		}
@@ -538,7 +543,8 @@ __be32 nfs4_callback_sequence(void *argp, void *resp,
 	 * related callback was received before the response to the original
 	 * call.
 	 */
-	if (referring_call_exists(clp, args->csa_nrclists, args->csa_rclists)) {
+	if (referring_call_exists(clp, args->csa_nrclists, args->csa_rclists,
+				&tbl->slot_tbl_lock) < 0) {
 		status = htonl(NFS4ERR_DELAY);
 		goto out_unlock;
 	}

fs/nfs/nfs4proc.c

@@ -547,8 +547,15 @@ nfs4_async_handle_exception(struct rpc_task *task, struct nfs_server *server,
 		ret = -EIO;
 	return ret;
 out_retry:
-	if (ret == 0)
+	if (ret == 0) {
 		exception->retry = 1;
+		/*
+		 * For NFS4ERR_MOVED, the client transport will need to
+		 * be recomputed after migration recovery has completed.
+		 */
+		if (errorcode == -NFS4ERR_MOVED)
+			rpc_task_release_transport(task);
+	}
 	return ret;
 }
 

fs/nfs/pnfs_nfs.c

@@ -61,7 +61,7 @@ EXPORT_SYMBOL_GPL(pnfs_generic_commit_release);
 
 /* The generic layer is about to remove the req from the commit list.
  * If this will make the bucket empty, it will need to put the lseg reference.
- * Note this must be called holding i_lock
+ * Note this must be called holding nfsi->commit_mutex
  */
 void
 pnfs_generic_clear_request_commit(struct nfs_page *req,
@@ -149,9 +149,7 @@ restart:
 		if (list_empty(&b->written)) {
 			freeme = b->wlseg;
 			b->wlseg = NULL;
-			spin_unlock(&cinfo->inode->i_lock);
 			pnfs_put_lseg(freeme);
-			spin_lock(&cinfo->inode->i_lock);
 			goto restart;
 		}
 	}
@@ -167,7 +165,7 @@ static void pnfs_generic_retry_commit(struct nfs_commit_info *cinfo, int idx)
 	LIST_HEAD(pages);
 	int i;
 
-	spin_lock(&cinfo->inode->i_lock);
+	mutex_lock(&NFS_I(cinfo->inode)->commit_mutex);
 	for (i = idx; i < fl_cinfo->nbuckets; i++) {
 		bucket = &fl_cinfo->buckets[i];
 		if (list_empty(&bucket->committing))
@@ -177,12 +175,12 @@ static void pnfs_generic_retry_commit(struct nfs_commit_info *cinfo, int idx)
 		list_for_each(pos, &bucket->committing)
 			cinfo->ds->ncommitting--;
 		list_splice_init(&bucket->committing, &pages);
-		spin_unlock(&cinfo->inode->i_lock);
+		mutex_unlock(&NFS_I(cinfo->inode)->commit_mutex);
 		nfs_retry_commit(&pages, freeme, cinfo, i);
 		pnfs_put_lseg(freeme);
-		spin_lock(&cinfo->inode->i_lock);
+		mutex_lock(&NFS_I(cinfo->inode)->commit_mutex);
 	}
-	spin_unlock(&cinfo->inode->i_lock);
+	mutex_unlock(&NFS_I(cinfo->inode)->commit_mutex);
 }
 
 static unsigned int
@@ -222,13 +220,13 @@ void pnfs_fetch_commit_bucket_list(struct list_head *pages,
 	struct list_head *pos;
 
 	bucket = &cinfo->ds->buckets[data->ds_commit_index];
-	spin_lock(&cinfo->inode->i_lock);
+	mutex_lock(&NFS_I(cinfo->inode)->commit_mutex);
 	list_for_each(pos, &bucket->committing)
 		cinfo->ds->ncommitting--;
 	list_splice_init(&bucket->committing, pages);
 	data->lseg = bucket->clseg;
 	bucket->clseg = NULL;
-	spin_unlock(&cinfo->inode->i_lock);
+	mutex_unlock(&NFS_I(cinfo->inode)->commit_mutex);
 
 }
 

fs/overlayfs/readdir.c

@@ -623,6 +623,21 @@ static int ovl_fill_real(struct dir_context *ctx, const char *name,
 	return orig_ctx->actor(orig_ctx, name, namelen, offset, ino, d_type);
 }
 
+static bool ovl_is_impure_dir(struct file *file)
+{
+	struct ovl_dir_file *od = file->private_data;
+	struct inode *dir = d_inode(file->f_path.dentry);
+
+	/*
+	 * Only upper dir can be impure, but if we are in the middle of
+	 * iterating a lower real dir, dir could be copied up and marked
+	 * impure. We only want the impure cache if we started iterating
+	 * a real upper dir to begin with.
+	 */
+	return od->is_upper && ovl_test_flag(OVL_IMPURE, dir);
+
+}
+
 static int ovl_iterate_real(struct file *file, struct dir_context *ctx)
 {
 	int err;
@@ -646,7 +661,7 @@ static int ovl_iterate_real(struct file *file, struct dir_context *ctx)
 		rdt.parent_ino = stat.ino;
 	}
 
-	if (ovl_test_flag(OVL_IMPURE, d_inode(dir))) {
+	if (ovl_is_impure_dir(file)) {
 		rdt.cache = ovl_cache_get_impure(&file->f_path);
 		if (IS_ERR(rdt.cache))
 			return PTR_ERR(rdt.cache);
@@ -676,7 +691,7 @@ static int ovl_iterate(struct file *file, struct dir_context *ctx)
 		 * entries.
 		 */
 		if (ovl_same_sb(dentry->d_sb) &&
-		    (ovl_test_flag(OVL_IMPURE, d_inode(dentry)) ||
+		    (ovl_is_impure_dir(file) ||
 		     OVL_TYPE_MERGE(ovl_path_type(dentry->d_parent)))) {
 			return ovl_iterate_real(file, ctx);
 		}

fs/quota/quota.c

@@ -18,6 +18,7 @@
 #include <linux/quotaops.h>
 #include <linux/types.h>
 #include <linux/writeback.h>
+#include <linux/nospec.h>
 
 static int check_quotactl_permission(struct super_block *sb, int type, int cmd,
 				     qid_t id)
@@ -703,6 +704,7 @@ static int do_quotactl(struct super_block *sb, int type, int cmd, qid_t id,
 
 	if (type >= (XQM_COMMAND(cmd) ? XQM_MAXQUOTAS : MAXQUOTAS))
 		return -EINVAL;
+	type = array_index_nospec(type, MAXQUOTAS);
 	/*
 	 * Quota not supported on this fs? Check this before s_quota_types
 	 * since they needn't be set if quota is not supported at all.

fs/ubifs/journal.c

@@ -665,6 +665,11 @@ int ubifs_jnl_update(struct ubifs_info *c, const struct inode *dir,
 	spin_lock(&ui->ui_lock);
 	ui->synced_i_size = ui->ui_size;
 	spin_unlock(&ui->ui_lock);
+	if (xent) {
+		spin_lock(&host_ui->ui_lock);
+		host_ui->synced_i_size = host_ui->ui_size;
+		spin_unlock(&host_ui->ui_lock);
+	}
 	mark_inode_clean(c, ui);
 	mark_inode_clean(c, host_ui);
 	return 0;
@@ -1283,11 +1288,10 @@ static int truncate_data_node(const struct ubifs_info *c, const struct inode *in
 			      int *new_len)
 {
 	void *buf;
-	int err, compr_type;
-	u32 dlen, out_len, old_dlen;
+	int err, dlen, compr_type, out_len, old_dlen;
 
 	out_len = le32_to_cpu(dn->size);
-	buf = kmalloc_array(out_len, WORST_COMPR_FACTOR, GFP_NOFS);
+	buf = kmalloc(out_len * WORST_COMPR_FACTOR, GFP_NOFS);
 	if (!buf)
 		return -ENOMEM;
 
@@ -1389,7 +1393,16 @@ int ubifs_jnl_truncate(struct ubifs_info *c, const struct inode *inode,
 		else if (err)
 			goto out_free;
 		else {
-			if (le32_to_cpu(dn->size) <= dlen)
+			int dn_len = le32_to_cpu(dn->size);
+
+			if (dn_len <= 0 || dn_len > UBIFS_BLOCK_SIZE) {
+				ubifs_err(c, "bad data node (block %u, inode %lu)",
+					  blk, inode->i_ino);
+				ubifs_dump_node(c, dn);
+				goto out_free;
+			}
+
+			if (dn_len <= dlen)
 				dlen = 0; /* Nothing to do */
 			else {
 				err = truncate_data_node(c, inode, blk, dn, &dlen);

fs/ubifs/lprops.c

@@ -1091,10 +1091,6 @@ static int scan_check_cb(struct ubifs_info *c,
 		}
 	}
 
-	buf = __vmalloc(c->leb_size, GFP_NOFS, PAGE_KERNEL);
-	if (!buf)
-		return -ENOMEM;
-
 	/*
 	 * After an unclean unmount, empty and freeable LEBs
 	 * may contain garbage - do not scan them.
@@ -1113,6 +1109,10 @@ static int scan_check_cb(struct ubifs_info *c,
 		return LPT_SCAN_CONTINUE;
 	}
 
+	buf = __vmalloc(c->leb_size, GFP_NOFS, PAGE_KERNEL);
+	if (!buf)
+		return -ENOMEM;
+
 	sleb = ubifs_scan(c, lnum, 0, buf, 0);
 	if (IS_ERR(sleb)) {
 		ret = PTR_ERR(sleb);

fs/ubifs/xattr.c

@@ -152,6 +152,12 @@ static int create_xattr(struct ubifs_info *c, struct inode *host,
 	ui->data_len = size;
 
 	mutex_lock(&host_ui->ui_mutex);
+
+	if (!host->i_nlink) {
+		err = -ENOENT;
+		goto out_noent;
+	}
+
 	host->i_ctime = current_time(host);
 	host_ui->xattr_cnt += 1;
 	host_ui->xattr_size += CALC_DENT_SIZE(fname_len(nm));
@@ -184,6 +190,7 @@ out_cancel:
 	host_ui->xattr_size -= CALC_XATTR_BYTES(size);
 	host_ui->xattr_names -= fname_len(nm);
 	host_ui->flags &= ~UBIFS_CRYPT_FL;
+out_noent:
 	mutex_unlock(&host_ui->ui_mutex);
 out_free:
 	make_bad_inode(inode);
@@ -235,6 +242,12 @@ static int change_xattr(struct ubifs_info *c, struct inode *host,
 	mutex_unlock(&ui->ui_mutex);
 
 	mutex_lock(&host_ui->ui_mutex);
+
+	if (!host->i_nlink) {
+		err = -ENOENT;
+		goto out_noent;
+	}
+
 	host->i_ctime = current_time(host);
 	host_ui->xattr_size -= CALC_XATTR_BYTES(old_size);
 	host_ui->xattr_size += CALC_XATTR_BYTES(size);
@@ -256,6 +269,7 @@ static int change_xattr(struct ubifs_info *c, struct inode *host,
 out_cancel:
 	host_ui->xattr_size -= CALC_XATTR_BYTES(size);
 	host_ui->xattr_size += CALC_XATTR_BYTES(old_size);
+out_noent:
 	mutex_unlock(&host_ui->ui_mutex);
 	make_bad_inode(inode);
 out_free:
@@ -484,6 +498,12 @@ static int remove_xattr(struct ubifs_info *c, struct inode *host,
 		return err;
 
 	mutex_lock(&host_ui->ui_mutex);
+
+	if (!host->i_nlink) {
+		err = -ENOENT;
+		goto out_noent;
+	}
+
 	host->i_ctime = current_time(host);
 	host_ui->xattr_cnt -= 1;
 	host_ui->xattr_size -= CALC_DENT_SIZE(fname_len(nm));
@@ -503,6 +523,7 @@ out_cancel:
 	host_ui->xattr_size += CALC_DENT_SIZE(fname_len(nm));
 	host_ui->xattr_size += CALC_XATTR_BYTES(ui->data_len);
 	host_ui->xattr_names += fname_len(nm);
+out_noent:
 	mutex_unlock(&host_ui->ui_mutex);
 	ubifs_release_budget(c, &req);
 	make_bad_inode(inode);
@@ -542,6 +563,9 @@ static int ubifs_xattr_remove(struct inode *host, const char *name)
 
 	ubifs_assert(inode_is_locked(host));
 
+	if (!host->i_nlink)
+		return -ENOENT;
+
 	if (fname_len(&nm) > UBIFS_MAX_NLEN)
 		return -ENAMETOOLONG;
 

fs/xattr.c

@@ -541,7 +541,7 @@ getxattr(struct dentry *d, const char __user *name, void __user *value,
 	if (error > 0) {
 		if ((strcmp(kname, XATTR_NAME_POSIX_ACL_ACCESS) == 0) ||
 		    (strcmp(kname, XATTR_NAME_POSIX_ACL_DEFAULT) == 0))
-			posix_acl_fix_xattr_to_user(kvalue, size);
+			posix_acl_fix_xattr_to_user(kvalue, error);
 		if (size && copy_to_user(value, kvalue, error))
 			error = -EFAULT;
 	} else if (error == -ERANGE && size >= XATTR_SIZE_MAX) {

include/linux/hyperv.h

@@ -1026,6 +1026,8 @@ extern int vmbus_establish_gpadl(struct vmbus_channel *channel,
 extern int vmbus_teardown_gpadl(struct vmbus_channel *channel,
 				     u32 gpadl_handle);
 
+void vmbus_reset_channel_cb(struct vmbus_channel *channel);
+
 extern int vmbus_recvpacket(struct vmbus_channel *channel,
 				  void *buffer,
 				  u32 bufferlen,

include/linux/intel-iommu.h

@@ -112,6 +112,7 @@
  * Extended Capability Register
  */
 
+#define ecap_dit(e)		((e >> 41) & 0x1)
 #define ecap_pasid(e)		((e >> 40) & 0x1)
 #define ecap_pss(e)		((e >> 35) & 0x1f)
 #define ecap_eafs(e)		((e >> 34) & 0x1)
@@ -281,6 +282,7 @@ enum {
 #define QI_DEV_IOTLB_SID(sid)	((u64)((sid) & 0xffff) << 32)
 #define QI_DEV_IOTLB_QDEP(qdep)	(((qdep) & 0x1f) << 16)
 #define QI_DEV_IOTLB_ADDR(addr)	((u64)(addr) & VTD_PAGE_MASK)
+#define QI_DEV_IOTLB_PFSID(pfsid) (((u64)(pfsid & 0xf) << 12) | ((u64)(pfsid & 0xfff) << 52))
 #define QI_DEV_IOTLB_SIZE	1
 #define QI_DEV_IOTLB_MAX_INVS	32
 
@@ -305,6 +307,7 @@ enum {
 #define QI_DEV_EIOTLB_PASID(p)	(((u64)p) << 32)
 #define QI_DEV_EIOTLB_SID(sid)	((u64)((sid) & 0xffff) << 16)
 #define QI_DEV_EIOTLB_QDEP(qd)	((u64)((qd) & 0x1f) << 4)
+#define QI_DEV_EIOTLB_PFSID(pfsid) (((u64)(pfsid & 0xf) << 12) | ((u64)(pfsid & 0xfff) << 52))
 #define QI_DEV_EIOTLB_MAX_INVS	32
 
 #define QI_PGRP_IDX(idx)	(((u64)(idx)) << 55)
@@ -450,9 +453,8 @@ extern void qi_flush_context(struct intel_iommu *iommu, u16 did, u16 sid,
 			     u8 fm, u64 type);
 extern void qi_flush_iotlb(struct intel_iommu *iommu, u16 did, u64 addr,
 			  unsigned int size_order, u64 type);
-extern void qi_flush_dev_iotlb(struct intel_iommu *iommu, u16 sid, u16 qdep,
-			       u64 addr, unsigned mask);
-
+extern void qi_flush_dev_iotlb(struct intel_iommu *iommu, u16 sid, u16 pfsid,
+			u16 qdep, u64 addr, unsigned mask);
 extern int qi_submit_sync(struct qi_desc *desc, struct intel_iommu *iommu);
 
 extern int dmar_ir_support(void);

include/linux/pci.h

@@ -2292,4 +2292,16 @@ static inline bool pci_is_thunderbolt_attached(struct pci_dev *pdev)
 /* provide the legacy pci_dma_* API */
 #include <linux/pci-dma-compat.h>
 
+#define pci_printk(level, pdev, fmt, arg...) \
+	dev_printk(level, &(pdev)->dev, fmt, ##arg)
+
+#define pci_emerg(pdev, fmt, arg...)	dev_emerg(&(pdev)->dev, fmt, ##arg)
+#define pci_alert(pdev, fmt, arg...)	dev_alert(&(pdev)->dev, fmt, ##arg)
+#define pci_crit(pdev, fmt, arg...)	dev_crit(&(pdev)->dev, fmt, ##arg)
+#define pci_err(pdev, fmt, arg...)	dev_err(&(pdev)->dev, fmt, ##arg)
+#define pci_warn(pdev, fmt, arg...)	dev_warn(&(pdev)->dev, fmt, ##arg)
+#define pci_notice(pdev, fmt, arg...)	dev_notice(&(pdev)->dev, fmt, ##arg)
+#define pci_info(pdev, fmt, arg...)	dev_info(&(pdev)->dev, fmt, ##arg)
+#define pci_dbg(pdev, fmt, arg...)	dev_dbg(&(pdev)->dev, fmt, ##arg)
+
 #endif /* LINUX_PCI_H */

include/linux/sunrpc/clnt.h

@@ -156,6 +156,7 @@ int		rpc_switch_client_transport(struct rpc_clnt *,
 
 void		rpc_shutdown_client(struct rpc_clnt *);
 void		rpc_release_client(struct rpc_clnt *);
+void		rpc_task_release_transport(struct rpc_task *);
 void		rpc_task_release_client(struct rpc_task *);
 
 int		rpcb_create_local(struct net *);

include/linux/verification.h

@@ -12,6 +12,12 @@
 #ifndef _LINUX_VERIFICATION_H
 #define _LINUX_VERIFICATION_H
 
+/*
+ * Indicate that both builtin trusted keys and secondary trusted keys
+ * should be used.
+ */
+#define VERIFY_USE_SECONDARY_KEYRING ((struct key *)1UL)
+
 /*
  * The use to which an asymmetric key is being put.
  */

include/video/udlfb.h

@@ -88,7 +88,7 @@ struct dlfb_data {
 #define MIN_RAW_PIX_BYTES	2
 #define MIN_RAW_CMD_BYTES	(RAW_HEADER_BYTES + MIN_RAW_PIX_BYTES)
 
-#define DL_DEFIO_WRITE_DELAY    5 /* fb_deferred_io.delay in jiffies */
+#define DL_DEFIO_WRITE_DELAY    msecs_to_jiffies(HZ <= 300 ? 4 : 10) /* optimal value for 720p video */
 #define DL_DEFIO_WRITE_DISABLE  (HZ*60) /* "disable" with long delay */
 
 /* remove these once align.h patch is taken into kernel */

kernel/livepatch/core.c

@@ -605,6 +605,9 @@ static int klp_init_func(struct klp_object *obj, struct klp_func *func)
 	if (!func->old_name || !func->new_func)
 		return -EINVAL;
 
+	if (strlen(func->old_name) >= KSYM_NAME_LEN)
+		return -EINVAL;
+
 	INIT_LIST_HEAD(&func->stack_node);
 	func->patched = false;
 	func->transition = false;
@@ -678,6 +681,9 @@ static int klp_init_object(struct klp_patch *patch, struct klp_object *obj)
 	if (!obj->funcs)
 		return -EINVAL;
 
+	if (klp_is_module(obj) && strlen(obj->name) >= MODULE_NAME_LEN)
+		return -EINVAL;
+
 	obj->patched = false;
 	obj->mod = NULL;
 

kernel/power/Kconfig

@@ -105,6 +105,7 @@ config PM_SLEEP
 	def_bool y
 	depends on SUSPEND || HIBERNATE_CALLBACKS
 	select PM
+	select SRCU
 
 config PM_SLEEP_SMP
 	def_bool y

kernel/printk/printk_safe.c

@@ -309,12 +309,12 @@ static __printf(1, 0) int vprintk_nmi(const char *fmt, va_list args)
 	return printk_safe_log_store(s, fmt, args);
 }
 
-void printk_nmi_enter(void)
+void notrace printk_nmi_enter(void)
 {
 	this_cpu_or(printk_context, PRINTK_NMI_CONTEXT_MASK);
 }
 
-void printk_nmi_exit(void)
+void notrace printk_nmi_exit(void)
 {
 	this_cpu_and(printk_context, ~PRINTK_NMI_CONTEXT_MASK);
 }

kernel/sys.c

@@ -1178,18 +1178,19 @@ static int override_release(char __user *release, size_t len)
 
 SYSCALL_DEFINE1(newuname, struct new_utsname __user *, name)
 {
-	int errno = 0;
+	struct new_utsname tmp;
 
 	down_read(&uts_sem);
-	if (copy_to_user(name, utsname(), sizeof *name))
-		errno = -EFAULT;
+	memcpy(&tmp, utsname(), sizeof(tmp));
 	up_read(&uts_sem);
+	if (copy_to_user(name, &tmp, sizeof(tmp)))
+		return -EFAULT;
 
-	if (!errno && override_release(name->release, sizeof(name->release)))
-		errno = -EFAULT;
-	if (!errno && override_architecture(name))
-		errno = -EFAULT;
-	return errno;
+	if (override_release(name->release, sizeof(name->release)))
+		return -EFAULT;
+	if (override_architecture(name))
+		return -EFAULT;
+	return 0;
 }
 
 #ifdef __ARCH_WANT_SYS_OLD_UNAME
@@ -1198,55 +1199,46 @@ SYSCALL_DEFINE1(newuname, struct new_utsname __user *, name)
  */
 SYSCALL_DEFINE1(uname, struct old_utsname __user *, name)
 {
-	int error = 0;
+	struct old_utsname tmp;
 
 	if (!name)
 		return -EFAULT;
 
 	down_read(&uts_sem);
-	if (copy_to_user(name, utsname(), sizeof(*name)))
-		error = -EFAULT;
+	memcpy(&tmp, utsname(), sizeof(tmp));
 	up_read(&uts_sem);
+	if (copy_to_user(name, &tmp, sizeof(tmp)))
+		return -EFAULT;
 
-	if (!error && override_release(name->release, sizeof(name->release)))
-		error = -EFAULT;
-	if (!error && override_architecture(name))
-		error = -EFAULT;
-	return error;
+	if (override_release(name->release, sizeof(name->release)))
+		return -EFAULT;
+	if (override_architecture(name))
+		return -EFAULT;
+	return 0;
 }
 
 SYSCALL_DEFINE1(olduname, struct oldold_utsname __user *, name)
 {
-	int error;
+	struct oldold_utsname tmp = {};
 
 	if (!name)
 		return -EFAULT;
-	if (!access_ok(VERIFY_WRITE, name, sizeof(struct oldold_utsname)))
-		return -EFAULT;
 
 	down_read(&uts_sem);
-	error = __copy_to_user(&name->sysname, &utsname()->sysname,
-			       __OLD_UTS_LEN);
-	error |= __put_user(0, name->sysname + __OLD_UTS_LEN);
-	error |= __copy_to_user(&name->nodename, &utsname()->nodename,
-				__OLD_UTS_LEN);
-	error |= __put_user(0, name->nodename + __OLD_UTS_LEN);
-	error |= __copy_to_user(&name->release, &utsname()->release,
-				__OLD_UTS_LEN);
-	error |= __put_user(0, name->release + __OLD_UTS_LEN);
-	error |= __copy_to_user(&name->version, &utsname()->version,
-				__OLD_UTS_LEN);
-	error |= __put_user(0, name->version + __OLD_UTS_LEN);
-	error |= __copy_to_user(&name->machine, &utsname()->machine,
-				__OLD_UTS_LEN);
-	error |= __put_user(0, name->machine + __OLD_UTS_LEN);
+	memcpy(&tmp.sysname, &utsname()->sysname, __OLD_UTS_LEN);
+	memcpy(&tmp.nodename, &utsname()->nodename, __OLD_UTS_LEN);
+	memcpy(&tmp.release, &utsname()->release, __OLD_UTS_LEN);
+	memcpy(&tmp.version, &utsname()->version, __OLD_UTS_LEN);
+	memcpy(&tmp.machine, &utsname()->machine, __OLD_UTS_LEN);
 	up_read(&uts_sem);
+	if (copy_to_user(name, &tmp, sizeof(tmp)))
+		return -EFAULT;
 
-	if (!error && override_architecture(name))
-		error = -EFAULT;
-	if (!error && override_release(name->release, sizeof(name->release)))
-		error = -EFAULT;
-	return error ? -EFAULT : 0;
+	if (override_architecture(name))
+		return -EFAULT;
+	if (override_release(name->release, sizeof(name->release)))
+		return -EFAULT;
+	return 0;
 }
 #endif
 
@@ -1260,17 +1252,18 @@ SYSCALL_DEFINE2(sethostname, char __user *, name, int, len)
 
 	if (len < 0 || len > __NEW_UTS_LEN)
 		return -EINVAL;
-	down_write(&uts_sem);
 	errno = -EFAULT;
 	if (!copy_from_user(tmp, name, len)) {
-		struct new_utsname *u = utsname();
+		struct new_utsname *u;
 
+		down_write(&uts_sem);
+		u = utsname();
 		memcpy(u->nodename, tmp, len);
 		memset(u->nodename + len, 0, sizeof(u->nodename) - len);
 		errno = 0;
 		uts_proc_notify(UTS_PROC_HOSTNAME);
+		up_write(&uts_sem);
 	}
-	up_write(&uts_sem);
 	return errno;
 }
 
@@ -1278,8 +1271,9 @@ SYSCALL_DEFINE2(sethostname, char __user *, name, int, len)
 
 SYSCALL_DEFINE2(gethostname, char __user *, name, int, len)
 {
-	int i, errno;
+	int i;
 	struct new_utsname *u;
+	char tmp[__NEW_UTS_LEN + 1];
 
 	if (len < 0)
 		return -EINVAL;
@@ -1288,11 +1282,11 @@ SYSCALL_DEFINE2(gethostname, char __user *, name, int, len)
 	i = 1 + strlen(u->nodename);
 	if (i > len)
 		i = len;
-	errno = 0;
-	if (copy_to_user(name, u->nodename, i))
-		errno = -EFAULT;
+	memcpy(tmp, u->nodename, i);
 	up_read(&uts_sem);
-	return errno;
+	if (copy_to_user(name, tmp, i))
+		return -EFAULT;
+	return 0;
 }
 
 #endif
@@ -1311,17 +1305,18 @@ SYSCALL_DEFINE2(setdomainname, char __user *, name, int, len)
 	if (len < 0 || len > __NEW_UTS_LEN)
 		return -EINVAL;
 
-	down_write(&uts_sem);
 	errno = -EFAULT;
 	if (!copy_from_user(tmp, name, len)) {
-		struct new_utsname *u = utsname();
+		struct new_utsname *u;
 
+		down_write(&uts_sem);
+		u = utsname();
 		memcpy(u->domainname, tmp, len);
 		memset(u->domainname + len, 0, sizeof(u->domainname) - len);
 		errno = 0;
 		uts_proc_notify(UTS_PROC_DOMAINNAME);
+		up_write(&uts_sem);
 	}
-	up_write(&uts_sem);
 	return errno;
 }
 

kernel/trace/blktrace.c

@@ -1809,6 +1809,10 @@ static ssize_t sysfs_blk_trace_attr_store(struct device *dev,
 	mutex_lock(&q->blk_trace_mutex);
 
 	if (attr == &dev_attr_enable) {
+		if (!!value == !!q->blk_trace) {
+			ret = 0;
+			goto out_unlock_bdev;
+		}
 		if (value)
 			ret = blk_trace_setup_queue(q, bdev);
 		else

kernel/trace/trace.c

@@ -7545,7 +7545,9 @@ rb_simple_write(struct file *filp, const char __user *ubuf,
 
 	if (buffer) {
 		mutex_lock(&trace_types_lock);
-		if (val) {
+		if (!!val == tracer_tracing_is_on(tr)) {
+			val = 0; /* do nothing */
+		} else if (val) {
 			tracer_tracing_on(tr);
 			if (tr->current_trace->start)
 				tr->current_trace->start(tr);

kernel/trace/trace_uprobe.c

@@ -967,7 +967,7 @@ probe_event_disable(struct trace_uprobe *tu, struct trace_event_file *file)
 
 		list_del_rcu(&link->list);
 		/* synchronize with u{,ret}probe_trace_func */
-		synchronize_sched();
+		synchronize_rcu();
 		kfree(link);
 
 		if (!list_empty(&tu->tp.files))

kernel/user_namespace.c

@@ -650,7 +650,16 @@ static ssize_t map_write(struct file *file, const char __user *buf,
 	unsigned idx;
 	struct uid_gid_extent *extent = NULL;
 	char *kbuf = NULL, *pos, *next_line;
-	ssize_t ret = -EINVAL;
+	ssize_t ret;
+
+	/* Only allow < page size writes at the beginning of the file */
+	if ((*ppos != 0) || (count >= PAGE_SIZE))
+		return -EINVAL;
+
+	/* Slurp in the user data */
+	kbuf = memdup_user_nul(buf, count);
+	if (IS_ERR(kbuf))
+		return PTR_ERR(kbuf);
 
 	/*
 	 * The userns_state_mutex serializes all writes to any given map.
@@ -684,19 +693,6 @@ static ssize_t map_write(struct file *file, const char __user *buf,
 	if (cap_valid(cap_setid) && !file_ns_capable(file, ns, CAP_SYS_ADMIN))
 		goto out;
 
-	/* Only allow < page size writes at the beginning of the file */
-	ret = -EINVAL;
-	if ((*ppos != 0) || (count >= PAGE_SIZE))
-		goto out;
-
-	/* Slurp in the user data */
-	kbuf = memdup_user_nul(buf, count);
-	if (IS_ERR(kbuf)) {
-		ret = PTR_ERR(kbuf);
-		kbuf = NULL;
-		goto out;
-	}
-
 	/* Parse the user data */
 	ret = -EINVAL;
 	pos = kbuf;

kernel/utsname_sysctl.c

@@ -18,7 +18,7 @@
 
 #ifdef CONFIG_PROC_SYSCTL
 
-static void *get_uts(struct ctl_table *table, int write)
+static void *get_uts(struct ctl_table *table)
 {
 	char *which = table->data;
 	struct uts_namespace *uts_ns;
@@ -26,21 +26,9 @@ static void *get_uts(struct ctl_table *table, int write)
 	uts_ns = current->nsproxy->uts_ns;
 	which = (which - (char *)&init_uts_ns) + (char *)uts_ns;
 
-	if (!write)
-		down_read(&uts_sem);
-	else
-		down_write(&uts_sem);
 	return which;
 }
 
-static void put_uts(struct ctl_table *table, int write, void *which)
-{
-	if (!write)
-		up_read(&uts_sem);
-	else
-		up_write(&uts_sem);
-}
-
 /*
  *	Special case of dostring for the UTS structure. This has locks
  *	to observe. Should this be in kernel/sys.c ????
@@ -50,13 +38,34 @@ static int proc_do_uts_string(struct ctl_table *table, int write,
 {
 	struct ctl_table uts_table;
 	int r;
-	memcpy(&uts_table, table, sizeof(uts_table));
-	uts_table.data = get_uts(table, write);
-	r = proc_dostring(&uts_table, write, buffer, lenp, ppos);
-	put_uts(table, write, uts_table.data);
+	char tmp_data[__NEW_UTS_LEN + 1];
 
-	if (write)
+	memcpy(&uts_table, table, sizeof(uts_table));
+	uts_table.data = tmp_data;
+
+	/*
+	 * Buffer the value in tmp_data so that proc_dostring() can be called
+	 * without holding any locks.
+	 * We also need to read the original value in the write==1 case to
+	 * support partial writes.
+	 */
+	down_read(&uts_sem);
+	memcpy(tmp_data, get_uts(table), sizeof(tmp_data));
+	up_read(&uts_sem);
+	r = proc_dostring(&uts_table, write, buffer, lenp, ppos);
+
+	if (write) {
+		/*
+		 * Write back the new value.
+		 * Note that, since we dropped uts_sem, the result can
+		 * theoretically be incorrect if there are two parallel writes
+		 * at non-zero offsets to the same sysctl.
+		 */
+		down_write(&uts_sem);
+		memcpy(get_uts(table), tmp_data, sizeof(tmp_data));
+		up_write(&uts_sem);
 		proc_sys_poll_notify(table->poll);
+	}
 
 	return r;
 }

mm/memory.c

@@ -392,15 +392,6 @@ void tlb_remove_table(struct mmu_gather *tlb, void *table)
 {
 	struct mmu_table_batch **batch = &tlb->batch;
 
-	/*
-	 * When there's less then two users of this mm there cannot be a
-	 * concurrent page-table walk.
-	 */
-	if (atomic_read(&tlb->mm->mm_users) < 2) {
-		__tlb_remove_table(table);
-		return;
-	}
-
 	if (*batch == NULL) {
 		*batch = (struct mmu_table_batch *)__get_free_page(GFP_NOWAIT | __GFP_NOWARN);
 		if (*batch == NULL) {

mm/readahead.c

@@ -380,6 +380,7 @@ ondemand_readahead(struct address_space *mapping,
 {
 	struct backing_dev_info *bdi = inode_to_bdi(mapping->host);
 	unsigned long max_pages = ra->ra_pages;
+	unsigned long add_pages;
 	pgoff_t prev_offset;
 
 	/*
@@ -469,10 +470,17 @@ readit:
 	 * Will this read hit the readahead marker made by itself?
 	 * If so, trigger the readahead marker hit now, and merge
 	 * the resulted next readahead window into the current one.
+	 * Take care of maximum IO pages as above.
 	 */
 	if (offset == ra->start && ra->size == ra->async_size) {
-		ra->async_size = get_next_ra_size(ra, max_pages);
-		ra->size += ra->async_size;
+		add_pages = get_next_ra_size(ra, max_pages);
+		if (ra->size + add_pages <= max_pages) {
+			ra->async_size = add_pages;
+			ra->size += add_pages;
+		} else {
+			ra->size = max_pages;
+			ra->async_size = max_pages >> 1;
+		}
 	}
 
 	return ra_submit(ra, mapping, filp);

net/9p/client.c

@@ -955,7 +955,7 @@ static int p9_client_version(struct p9_client *c)
 {
 	int err = 0;
 	struct p9_req_t *req;
-	char *version;
+	char *version = NULL;
 	int msize;
 
 	p9_debug(P9_DEBUG_9P, ">>> TVERSION msize %d protocol %d\n",

net/9p/trans_fd.c

@@ -185,6 +185,8 @@ static void p9_mux_poll_stop(struct p9_conn *m)
 	spin_lock_irqsave(&p9_poll_lock, flags);
 	list_del_init(&m->poll_pending_link);
 	spin_unlock_irqrestore(&p9_poll_lock, flags);
+
+	flush_work(&p9_poll_work);
 }
 
 /**
@@ -951,7 +953,7 @@ p9_fd_create_tcp(struct p9_client *client, const char *addr, char *args)
 	if (err < 0)
 		return err;
 
-	if (valid_ipaddr4(addr) < 0)
+	if (addr == NULL || valid_ipaddr4(addr) < 0)
 		return -EINVAL;
 
 	csocket = NULL;
@@ -1001,6 +1003,9 @@ p9_fd_create_unix(struct p9_client *client, const char *addr, char *args)
 
 	csocket = NULL;
 
+	if (addr == NULL)
+		return -EINVAL;
+
 	if (strlen(addr) >= UNIX_PATH_MAX) {
 		pr_err("%s (%d): address too long: %s\n",
 		       __func__, task_pid_nr(current), addr);

net/9p/trans_rdma.c

@@ -646,6 +646,9 @@ rdma_create_trans(struct p9_client *client, const char *addr, char *args)
 	struct rdma_conn_param conn_param;
 	struct ib_qp_init_attr qp_attr;
 
+	if (addr == NULL)
+		return -EINVAL;
+
 	/* Parse the transport specific mount options */
 	err = parse_opts(args, &opts);
 	if (err < 0)

net/9p/trans_virtio.c

@@ -189,7 +189,7 @@ static int pack_sg_list(struct scatterlist *sg, int start,
 		s = rest_of_page(data);
 		if (s > count)
 			s = count;
-		BUG_ON(index > limit);
+		BUG_ON(index >= limit);
 		/* Make sure we don't terminate early. */
 		sg_unmark_end(&sg[index]);
 		sg_set_buf(&sg[index++], data, s);
@@ -234,6 +234,7 @@ pack_sg_list_p(struct scatterlist *sg, int start, int limit,
 		s = PAGE_SIZE - data_off;
 		if (s > count)
 			s = count;
+		BUG_ON(index >= limit);
 		/* Make sure we don't terminate early. */
 		sg_unmark_end(&sg[index]);
 		sg_set_page(&sg[index++], pdata[i++], s, data_off);
@@ -406,6 +407,7 @@ p9_virtio_zc_request(struct p9_client *client, struct p9_req_t *req,
 	p9_debug(P9_DEBUG_TRANS, "virtio request\n");
 
 	if (uodata) {
+		__le32 sz;
 		int n = p9_get_mapped_pages(chan, &out_pages, uodata,
 					    outlen, &offs, &need_drop);
 		if (n < 0)
@@ -416,6 +418,12 @@ p9_virtio_zc_request(struct p9_client *client, struct p9_req_t *req,
 			memcpy(&req->tc->sdata[req->tc->size - 4], &v, 4);
 			outlen = n;
 		}
+		/* The size field of the message must include the length of the
+		 * header and the length of the data.  We didn't actually know
+		 * the length of the data until this point so add it in now.
+		 */
+		sz = cpu_to_le32(req->tc->size + outlen);
+		memcpy(&req->tc->sdata[0], &sz, sizeof(sz));
 	} else if (uidata) {
 		int n = p9_get_mapped_pages(chan, &in_pages, uidata,
 					    inlen, &offs, &need_drop);
@@ -643,6 +651,9 @@ p9_virtio_create(struct p9_client *client, const char *devname, char *args)
 	int ret = -ENOENT;
 	int found = 0;
 
+	if (devname == NULL)
+		return -EINVAL;
+
 	mutex_lock(&virtio_9p_lock);
 	list_for_each_entry(chan, &virtio_chan_list, chan_list) {
 		if (!strncmp(devname, chan->tag, chan->tag_len) &&

net/9p/trans_xen.c

@@ -95,6 +95,9 @@ static int p9_xen_create(struct p9_client *client, const char *addr, char *args)
 {
 	struct xen_9pfs_front_priv *priv;
 
+	if (addr == NULL)
+		return -EINVAL;
+
 	read_lock(&xen_9pfs_lock);
 	list_for_each_entry(priv, &xen_9pfs_devs, list) {
 		if (!strcmp(priv->tag, addr)) {

net/ieee802154/6lowpan/tx.c

@@ -265,9 +265,24 @@ netdev_tx_t lowpan_xmit(struct sk_buff *skb, struct net_device *ldev)
 	/* We must take a copy of the skb before we modify/replace the ipv6
 	 * header as the header could be used elsewhere
 	 */
-	skb = skb_unshare(skb, GFP_ATOMIC);
-	if (!skb)
-		return NET_XMIT_DROP;
+	if (unlikely(skb_headroom(skb) < ldev->needed_headroom ||
+		     skb_tailroom(skb) < ldev->needed_tailroom)) {
+		struct sk_buff *nskb;
+
+		nskb = skb_copy_expand(skb, ldev->needed_headroom,
+				       ldev->needed_tailroom, GFP_ATOMIC);
+		if (likely(nskb)) {
+			consume_skb(skb);
+			skb = nskb;
+		} else {
+			kfree_skb(skb);
+			return NET_XMIT_DROP;
+		}
+	} else {
+		skb = skb_unshare(skb, GFP_ATOMIC);
+		if (!skb)
+			return NET_XMIT_DROP;
+	}
 
 	ret = lowpan_header(skb, ldev, &dgram_size, &dgram_offset);
 	if (ret < 0) {

net/mac802154/tx.c

@@ -63,8 +63,21 @@ ieee802154_tx(struct ieee802154_local *local, struct sk_buff *skb)
 	int ret;
 
 	if (!(local->hw.flags & IEEE802154_HW_TX_OMIT_CKSUM)) {
-		u16 crc = crc_ccitt(0, skb->data, skb->len);
+		struct sk_buff *nskb;
+		u16 crc;
 
+		if (unlikely(skb_tailroom(skb) < IEEE802154_FCS_LEN)) {
+			nskb = skb_copy_expand(skb, 0, IEEE802154_FCS_LEN,
+					       GFP_ATOMIC);
+			if (likely(nskb)) {
+				consume_skb(skb);
+				skb = nskb;
+			} else {
+				goto err_tx;
+			}
+		}
+
+		crc = crc_ccitt(0, skb->data, skb->len);
 		put_unaligned_le16(crc, skb_put(skb, 2));
 	}
 

net/sunrpc/clnt.c

@@ -965,10 +965,20 @@ out:
 }
 EXPORT_SYMBOL_GPL(rpc_bind_new_program);
 
+void rpc_task_release_transport(struct rpc_task *task)
+{
+	struct rpc_xprt *xprt = task->tk_xprt;
+
+	if (xprt) {
+		task->tk_xprt = NULL;
+		xprt_put(xprt);
+	}
+}
+EXPORT_SYMBOL_GPL(rpc_task_release_transport);
+
 void rpc_task_release_client(struct rpc_task *task)
 {
 	struct rpc_clnt *clnt = task->tk_client;
-	struct rpc_xprt *xprt = task->tk_xprt;
 
 	if (clnt != NULL) {
 		/* Remove from client task list */
@@ -979,12 +989,14 @@ void rpc_task_release_client(struct rpc_task *task)
 
 		rpc_release_client(clnt);
 	}
+	rpc_task_release_transport(task);
+}
 
-	if (xprt != NULL) {
-		task->tk_xprt = NULL;
-
-		xprt_put(xprt);
-	}
+static
+void rpc_task_set_transport(struct rpc_task *task, struct rpc_clnt *clnt)
+{
+	if (!task->tk_xprt)
+		task->tk_xprt = xprt_iter_get_next(&clnt->cl_xpi);
 }
 
 static
@@ -992,8 +1004,7 @@ void rpc_task_set_client(struct rpc_task *task, struct rpc_clnt *clnt)
 {
 
 	if (clnt != NULL) {
-		if (task->tk_xprt == NULL)
-			task->tk_xprt = xprt_iter_get_next(&clnt->cl_xpi);
+		rpc_task_set_transport(task, clnt);
 		task->tk_client = clnt;
 		atomic_inc(&clnt->cl_count);
 		if (clnt->cl_softrtry)
@@ -1529,6 +1540,7 @@ call_start(struct rpc_task *task)
 		clnt->cl_program->version[clnt->cl_vers]->counts[idx]++;
 	clnt->cl_stats->rpccnt++;
 	task->tk_action = call_reserve;
+	rpc_task_set_transport(task, clnt);
 }
 
 /*

security/commoncap.c

@@ -413,7 +413,7 @@ int cap_inode_getsecurity(struct inode *inode, const char *name, void **buffer,
 	if (strcmp(name, "capability") != 0)
 		return -EOPNOTSUPP;
 
-	dentry = d_find_alias(inode);
+	dentry = d_find_any_alias(inode);
 	if (!dentry)
 		return -EINVAL;
 

tools/perf/util/auxtrace.c

@@ -197,6 +197,9 @@ static int auxtrace_queues__grow(struct auxtrace_queues *queues,
 	for (i = 0; i < queues->nr_queues; i++) {
 		list_splice_tail(&queues->queue_array[i].head,
 				 &queue_array[i].head);
+		queue_array[i].tid = queues->queue_array[i].tid;
+		queue_array[i].cpu = queues->queue_array[i].cpu;
+		queue_array[i].set = queues->queue_array[i].set;
 		queue_array[i].priv = queues->queue_array[i].priv;
 	}