Linux patch 4.4.1904.4-191

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

2 files changed, 1943 insertions, 0 deletions

diff --git a/0000_README b/0000_README
index 91e5cbd7..e429de71 100644
--- a/0000_README
+++ b/0000_README
@@ -799,6 +799,10 @@ Patch:  1188_linux-4.4.189.patch
 From:   http://www.kernel.org
 Desc:   Linux 4.4.189
 
+Patch:  1189_linux-4.4.190.patch
+From:   http://www.kernel.org
+Desc:   Linux 4.4.190
+
 Patch:  1500_XATTR_USER_PREFIX.patch
 From:   https://bugs.gentoo.org/show_bug.cgi?id=470644
 Desc:   Support for namespace user.pax.* on tmpfs.
diff --git a/1189_linux-4.4.190.patch b/1189_linux-4.4.190.patch
new file mode 100644
index 00000000..49f61723
--- /dev/null
+++ b/1189_linux-4.4.190.patch
@@ -0,0 +1,1939 @@
+diff --git a/Makefile b/Makefile
+index 81a0ada6536f..83acf2d6c55e 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 4
+-SUBLEVEL = 189
++SUBLEVEL = 190
+ EXTRAVERSION =
+ NAME = Blurry Fish Butt
+ 
+diff --git a/arch/arm/mach-davinci/sleep.S b/arch/arm/mach-davinci/sleep.S
+index a5336a5e2739..459d081caf79 100644
+--- a/arch/arm/mach-davinci/sleep.S
++++ b/arch/arm/mach-davinci/sleep.S
+@@ -37,6 +37,7 @@
+ #define DEEPSLEEP_SLEEPENABLE_BIT	BIT(31)
+ 
+ 	.text
++	.arch	armv5te
+ /*
+  * Move DaVinci into deep sleep state
+  *
+diff --git a/arch/arm64/kernel/hw_breakpoint.c b/arch/arm64/kernel/hw_breakpoint.c
+index eeebfc315526..036fbb959821 100644
+--- a/arch/arm64/kernel/hw_breakpoint.c
++++ b/arch/arm64/kernel/hw_breakpoint.c
+@@ -504,13 +504,14 @@ int arch_validate_hwbkpt_settings(struct perf_event *bp)
+ 			/* Aligned */
+ 			break;
+ 		case 1:
+-			/* Allow single byte watchpoint. */
+-			if (info->ctrl.len == ARM_BREAKPOINT_LEN_1)
+-				break;
+ 		case 2:
+ 			/* Allow halfword watchpoints and breakpoints. */
+ 			if (info->ctrl.len == ARM_BREAKPOINT_LEN_2)
+ 				break;
++		case 3:
++			/* Allow single byte watchpoint. */
++			if (info->ctrl.len == ARM_BREAKPOINT_LEN_1)
++				break;
+ 		default:
+ 			return -EINVAL;
+ 		}
+diff --git a/arch/sh/kernel/hw_breakpoint.c b/arch/sh/kernel/hw_breakpoint.c
+index 2197fc584186..000cc3343867 100644
+--- a/arch/sh/kernel/hw_breakpoint.c
++++ b/arch/sh/kernel/hw_breakpoint.c
+@@ -160,6 +160,7 @@ int arch_bp_generic_fields(int sh_len, int sh_type,
+ 	switch (sh_type) {
+ 	case SH_BREAKPOINT_READ:
+ 		*gen_type = HW_BREAKPOINT_R;
++		break;
+ 	case SH_BREAKPOINT_WRITE:
+ 		*gen_type = HW_BREAKPOINT_W;
+ 		break;
+diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile
+index efa6073ffa7e..bf0c7b6b00c3 100644
+--- a/arch/x86/boot/compressed/Makefile
++++ b/arch/x86/boot/compressed/Makefile
+@@ -30,6 +30,7 @@ KBUILD_CFLAGS += $(cflags-y)
+ KBUILD_CFLAGS += -mno-mmx -mno-sse
+ KBUILD_CFLAGS += $(call cc-option,-ffreestanding)
+ KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
++KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member)
+ 
+ KBUILD_AFLAGS  := $(KBUILD_CFLAGS) -D__ASSEMBLY__
+ GCOV_PROFILE := n
+diff --git a/arch/x86/entry/vdso/vclock_gettime.c b/arch/x86/entry/vdso/vclock_gettime.c
+index 049327ee8868..6badfe41dbe0 100644
+--- a/arch/x86/entry/vdso/vclock_gettime.c
++++ b/arch/x86/entry/vdso/vclock_gettime.c
+@@ -13,7 +13,6 @@
+ 
+ #include <uapi/linux/time.h>
+ #include <asm/vgtod.h>
+-#include <asm/hpet.h>
+ #include <asm/vvar.h>
+ #include <asm/unistd.h>
+ #include <asm/msr.h>
+@@ -26,16 +25,6 @@ extern int __vdso_clock_gettime(clockid_t clock, struct timespec *ts);
+ extern int __vdso_gettimeofday(struct timeval *tv, struct timezone *tz);
+ extern time_t __vdso_time(time_t *t);
+ 
+-#ifdef CONFIG_HPET_TIMER
+-extern u8 hpet_page
+-	__attribute__((visibility("hidden")));
+-
+-static notrace cycle_t vread_hpet(void)
+-{
+-	return *(const volatile u32 *)(&hpet_page + HPET_COUNTER);
+-}
+-#endif
+-
+ #ifdef CONFIG_PARAVIRT_CLOCK
+ extern u8 pvclock_page
+ 	__attribute__((visibility("hidden")));
+@@ -209,10 +198,6 @@ notrace static inline u64 vgetsns(int *mode)
+ 
+ 	if (gtod->vclock_mode == VCLOCK_TSC)
+ 		cycles = vread_tsc();
+-#ifdef CONFIG_HPET_TIMER
+-	else if (gtod->vclock_mode == VCLOCK_HPET)
+-		cycles = vread_hpet();
+-#endif
+ #ifdef CONFIG_PARAVIRT_CLOCK
+ 	else if (gtod->vclock_mode == VCLOCK_PVCLOCK)
+ 		cycles = vread_pvclock(mode);
+diff --git a/arch/x86/entry/vdso/vdso-layout.lds.S b/arch/x86/entry/vdso/vdso-layout.lds.S
+index 4158acc17df0..a708aa90b507 100644
+--- a/arch/x86/entry/vdso/vdso-layout.lds.S
++++ b/arch/x86/entry/vdso/vdso-layout.lds.S
+@@ -25,7 +25,7 @@ SECTIONS
+ 	 * segment.
+ 	 */
+ 
+-	vvar_start = . - 3 * PAGE_SIZE;
++	vvar_start = . - 2 * PAGE_SIZE;
+ 	vvar_page = vvar_start;
+ 
+ 	/* Place all vvars at the offsets in asm/vvar.h. */
+@@ -35,8 +35,7 @@ SECTIONS
+ #undef __VVAR_KERNEL_LDS
+ #undef EMIT_VVAR
+ 
+-	hpet_page = vvar_start + PAGE_SIZE;
+-	pvclock_page = vvar_start + 2 * PAGE_SIZE;
++	pvclock_page = vvar_start + PAGE_SIZE;
+ 
+ 	. = SIZEOF_HEADERS;
+ 
+diff --git a/arch/x86/include/asm/clocksource.h b/arch/x86/include/asm/clocksource.h
+index eda81dc0f4ae..c843fed8fc5e 100644
+--- a/arch/x86/include/asm/clocksource.h
++++ b/arch/x86/include/asm/clocksource.h
+@@ -5,8 +5,7 @@
+ 
+ #define VCLOCK_NONE 0  /* No vDSO clock available.	*/
+ #define VCLOCK_TSC  1  /* vDSO should use vread_tsc.	*/
+-#define VCLOCK_HPET 2  /* vDSO should use vread_hpet.	*/
+-#define VCLOCK_PVCLOCK 3 /* vDSO should use vread_pvclock. */
++#define VCLOCK_PVCLOCK 2 /* vDSO should use vread_pvclock. */
+ 
+ struct arch_clocksource_data {
+ 	int vclock_mode;
+diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c
+index 9cce5504a5c7..e8d20336f398 100644
+--- a/arch/x86/kernel/hpet.c
++++ b/arch/x86/kernel/hpet.c
+@@ -774,7 +774,6 @@ static struct clocksource clocksource_hpet = {
+ 	.mask		= HPET_MASK,
+ 	.flags		= CLOCK_SOURCE_IS_CONTINUOUS,
+ 	.resume		= hpet_resume_counter,
+-	.archdata	= { .vclock_mode = VCLOCK_HPET },
+ };
+ 
+ static int hpet_clocksource_register(void)
+diff --git a/arch/x86/kvm/trace.h b/arch/x86/kvm/trace.h
+index 0ec94c6b4757..0a187b9607ba 100644
+--- a/arch/x86/kvm/trace.h
++++ b/arch/x86/kvm/trace.h
+@@ -809,8 +809,7 @@ TRACE_EVENT(kvm_write_tsc_offset,
+ 
+ #define host_clocks					\
+ 	{VCLOCK_NONE, "none"},				\
+-	{VCLOCK_TSC,  "tsc"},				\
+-	{VCLOCK_HPET, "hpet"}				\
++	{VCLOCK_TSC,  "tsc"}				\
+ 
+ TRACE_EVENT(kvm_update_master_clock,
+ 	TP_PROTO(bool use_master_clock, unsigned int host_clock, bool offset_matched),
+diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
+index 462c5c30b9a2..0e498683295b 100644
+--- a/arch/x86/mm/fault.c
++++ b/arch/x86/mm/fault.c
+@@ -216,13 +216,14 @@ static inline pmd_t *vmalloc_sync_one(pgd_t *pgd, unsigned long address)
+ 
+ 	pmd = pmd_offset(pud, address);
+ 	pmd_k = pmd_offset(pud_k, address);
+-	if (!pmd_present(*pmd_k))
+-		return NULL;
+ 
+-	if (!pmd_present(*pmd))
++	if (pmd_present(*pmd) != pmd_present(*pmd_k))
+ 		set_pmd(pmd, *pmd_k);
++
++	if (!pmd_present(*pmd_k))
++		return NULL;
+ 	else
+-		BUG_ON(pmd_page(*pmd) != pmd_page(*pmd_k));
++		BUG_ON(pmd_pfn(*pmd) != pmd_pfn(*pmd_k));
+ 
+ 	return pmd_k;
+ }
+@@ -242,17 +243,13 @@ void vmalloc_sync_all(void)
+ 		spin_lock(&pgd_lock);
+ 		list_for_each_entry(page, &pgd_list, lru) {
+ 			spinlock_t *pgt_lock;
+-			pmd_t *ret;
+ 
+ 			/* the pgt_lock only for Xen */
+ 			pgt_lock = &pgd_page_get_mm(page)->page_table_lock;
+ 
+ 			spin_lock(pgt_lock);
+-			ret = vmalloc_sync_one(page_address(page), address);
++			vmalloc_sync_one(page_address(page), address);
+ 			spin_unlock(pgt_lock);
+-
+-			if (!ret)
+-				break;
+ 		}
+ 		spin_unlock(&pgd_lock);
+ 	}
+diff --git a/drivers/ata/libahci_platform.c b/drivers/ata/libahci_platform.c
+index cd2eab6aa92e..65371e1befe8 100644
+--- a/drivers/ata/libahci_platform.c
++++ b/drivers/ata/libahci_platform.c
+@@ -300,6 +300,9 @@ static int ahci_platform_get_phy(struct ahci_host_priv *hpriv, u32 port,
+ 		hpriv->phys[port] = NULL;
+ 		rc = 0;
+ 		break;
++	case -EPROBE_DEFER:
++		/* Do not complain yet */
++		break;
+ 
+ 	default:
+ 		dev_err(dev,
+diff --git a/drivers/ata/libata-zpodd.c b/drivers/ata/libata-zpodd.c
+index 7017a81d53cf..083856272e92 100644
+--- a/drivers/ata/libata-zpodd.c
++++ b/drivers/ata/libata-zpodd.c
+@@ -55,7 +55,7 @@ static enum odd_mech_type zpodd_get_mech_type(struct ata_device *dev)
+ 	unsigned int ret;
+ 	struct rm_feature_desc *desc;
+ 	struct ata_taskfile tf;
+-	static const char cdb[] = {  GPCMD_GET_CONFIGURATION,
++	static const char cdb[ATAPI_CDB_LEN] = {  GPCMD_GET_CONFIGURATION,
+ 			2,      /* only 1 feature descriptor requested */
+ 			0, 3,   /* 3, removable medium feature */
+ 			0, 0, 0,/* reserved */
+diff --git a/drivers/cpufreq/pasemi-cpufreq.c b/drivers/cpufreq/pasemi-cpufreq.c
+index 58c933f48300..991b6a3062c4 100644
+--- a/drivers/cpufreq/pasemi-cpufreq.c
++++ b/drivers/cpufreq/pasemi-cpufreq.c
+@@ -145,10 +145,18 @@ static int pas_cpufreq_cpu_init(struct cpufreq_policy *policy)
+ 	int err = -ENODEV;
+ 
+ 	cpu = of_get_cpu_node(policy->cpu, NULL);
++	if (!cpu)
++		goto out;
+ 
++	max_freqp = of_get_property(cpu, "clock-frequency", NULL);
+ 	of_node_put(cpu);
+-	if (!cpu)
++	if (!max_freqp) {
++		err = -EINVAL;
+ 		goto out;
++	}
++
++	/* we need the freq in kHz */
++	max_freq = *max_freqp / 1000;
+ 
+ 	dn = of_find_compatible_node(NULL, NULL, "1682m-sdc");
+ 	if (!dn)
+@@ -185,16 +193,6 @@ static int pas_cpufreq_cpu_init(struct cpufreq_policy *policy)
+ 	}
+ 
+ 	pr_debug("init cpufreq on CPU %d\n", policy->cpu);
+-
+-	max_freqp = of_get_property(cpu, "clock-frequency", NULL);
+-	if (!max_freqp) {
+-		err = -EINVAL;
+-		goto out_unmap_sdcpwr;
+-	}
+-
+-	/* we need the freq in kHz */
+-	max_freq = *max_freqp / 1000;
+-
+ 	pr_debug("max clock-frequency is at %u kHz\n", max_freq);
+ 	pr_debug("initializing frequency table\n");
+ 
+@@ -212,9 +210,6 @@ static int pas_cpufreq_cpu_init(struct cpufreq_policy *policy)
+ 
+ 	return cpufreq_generic_init(policy, pas_freqs, get_gizmo_latency());
+ 
+-out_unmap_sdcpwr:
+-	iounmap(sdcpwr_mapbase);
+-
+ out_unmap_sdcasr:
+ 	iounmap(sdcasr_mapbase);
+ out:
+diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
+index cf478fe6b335..b0d42234fba0 100644
+--- a/drivers/firmware/Kconfig
++++ b/drivers/firmware/Kconfig
+@@ -135,7 +135,7 @@ config DMI_SCAN_MACHINE_NON_EFI_FALLBACK
+ 
+ config ISCSI_IBFT_FIND
+ 	bool "iSCSI Boot Firmware Table Attributes"
+-	depends on X86 && ACPI
++	depends on X86 && ISCSI_IBFT
+ 	default n
+ 	help
+ 	  This option enables the kernel to find the region of memory
+@@ -146,7 +146,8 @@ config ISCSI_IBFT_FIND
+ config ISCSI_IBFT
+ 	tristate "iSCSI Boot Firmware Table Attributes module"
+ 	select ISCSI_BOOT_SYSFS
+-	depends on ISCSI_IBFT_FIND && SCSI && SCSI_LOWLEVEL
++	select ISCSI_IBFT_FIND if X86
++	depends on ACPI && SCSI && SCSI_LOWLEVEL
+ 	default	n
+ 	help
+ 	  This option enables support for detection and exposing of iSCSI
+diff --git a/drivers/firmware/iscsi_ibft.c b/drivers/firmware/iscsi_ibft.c
+index 437c8ef90643..30d67fbe00c7 100644
+--- a/drivers/firmware/iscsi_ibft.c
++++ b/drivers/firmware/iscsi_ibft.c
+@@ -93,6 +93,10 @@ MODULE_DESCRIPTION("sysfs interface to BIOS iBFT information");
+ MODULE_LICENSE("GPL");
+ MODULE_VERSION(IBFT_ISCSI_VERSION);
+ 
++#ifndef CONFIG_ISCSI_IBFT_FIND
++struct acpi_table_ibft *ibft_addr;
++#endif
++
+ struct ibft_hdr {
+ 	u8 id;
+ 	u8 version;
+diff --git a/drivers/hid/hid-holtek-kbd.c b/drivers/hid/hid-holtek-kbd.c
+index 6e1a4a4fc0c1..ab9da597106f 100644
+--- a/drivers/hid/hid-holtek-kbd.c
++++ b/drivers/hid/hid-holtek-kbd.c
+@@ -126,9 +126,14 @@ static int holtek_kbd_input_event(struct input_dev *dev, unsigned int type,
+ 
+ 	/* Locate the boot interface, to receive the LED change events */
+ 	struct usb_interface *boot_interface = usb_ifnum_to_if(usb_dev, 0);
++	struct hid_device *boot_hid;
++	struct hid_input *boot_hid_input;
+ 
+-	struct hid_device *boot_hid = usb_get_intfdata(boot_interface);
+-	struct hid_input *boot_hid_input = list_first_entry(&boot_hid->inputs,
++	if (unlikely(boot_interface == NULL))
++		return -ENODEV;
++
++	boot_hid = usb_get_intfdata(boot_interface);
++	boot_hid_input = list_first_entry(&boot_hid->inputs,
+ 		struct hid_input, list);
+ 
+ 	return boot_hid_input->input->event(boot_hid_input->input, type, code,
+diff --git a/drivers/hid/usbhid/hiddev.c b/drivers/hid/usbhid/hiddev.c
+index 308d8432fea3..8903ea09ac58 100644
+--- a/drivers/hid/usbhid/hiddev.c
++++ b/drivers/hid/usbhid/hiddev.c
+@@ -308,6 +308,14 @@ static int hiddev_open(struct inode *inode, struct file *file)
+ 	spin_unlock_irq(&list->hiddev->list_lock);
+ 
+ 	mutex_lock(&hiddev->existancelock);
++	/*
++	 * recheck exist with existance lock held to
++	 * avoid opening a disconnected device
++	 */
++	if (!list->hiddev->exist) {
++		res = -ENODEV;
++		goto bail_unlock;
++	}
+ 	if (!list->hiddev->open++)
+ 		if (list->hiddev->exist) {
+ 			struct hid_device *hid = hiddev->hid;
+@@ -322,6 +330,10 @@ static int hiddev_open(struct inode *inode, struct file *file)
+ 	return 0;
+ bail_unlock:
+ 	mutex_unlock(&hiddev->existancelock);
++
++	spin_lock_irq(&list->hiddev->list_lock);
++	list_del(&list->node);
++	spin_unlock_irq(&list->hiddev->list_lock);
+ bail:
+ 	file->private_data = NULL;
+ 	vfree(list);
+diff --git a/drivers/hwmon/nct6775.c b/drivers/hwmon/nct6775.c
+index d3c6115f16b9..db38dff3f986 100644
+--- a/drivers/hwmon/nct6775.c
++++ b/drivers/hwmon/nct6775.c
+@@ -696,7 +696,7 @@ static const u16 NCT6106_REG_TARGET[] = { 0x111, 0x121, 0x131 };
+ static const u16 NCT6106_REG_WEIGHT_TEMP_SEL[] = { 0x168, 0x178, 0x188 };
+ static const u16 NCT6106_REG_WEIGHT_TEMP_STEP[] = { 0x169, 0x179, 0x189 };
+ static const u16 NCT6106_REG_WEIGHT_TEMP_STEP_TOL[] = { 0x16a, 0x17a, 0x18a };
+-static const u16 NCT6106_REG_WEIGHT_DUTY_STEP[] = { 0x16b, 0x17b, 0x17c };
++static const u16 NCT6106_REG_WEIGHT_DUTY_STEP[] = { 0x16b, 0x17b, 0x18b };
+ static const u16 NCT6106_REG_WEIGHT_TEMP_BASE[] = { 0x16c, 0x17c, 0x18c };
+ static const u16 NCT6106_REG_WEIGHT_DUTY_BASE[] = { 0x16d, 0x17d, 0x18d };
+ 
+@@ -3478,6 +3478,7 @@ static int nct6775_probe(struct platform_device *pdev)
+ 		data->REG_FAN_TIME[0] = NCT6106_REG_FAN_STOP_TIME;
+ 		data->REG_FAN_TIME[1] = NCT6106_REG_FAN_STEP_UP_TIME;
+ 		data->REG_FAN_TIME[2] = NCT6106_REG_FAN_STEP_DOWN_TIME;
++		data->REG_TOLERANCE_H = NCT6106_REG_TOLERANCE_H;
+ 		data->REG_PWM[0] = NCT6106_REG_PWM;
+ 		data->REG_PWM[1] = NCT6106_REG_FAN_START_OUTPUT;
+ 		data->REG_PWM[2] = NCT6106_REG_FAN_STOP_OUTPUT;
+diff --git a/drivers/hwmon/nct7802.c b/drivers/hwmon/nct7802.c
+index 12b94b094c0d..7f8738a83cb9 100644
+--- a/drivers/hwmon/nct7802.c
++++ b/drivers/hwmon/nct7802.c
+@@ -768,7 +768,7 @@ static struct attribute *nct7802_in_attrs[] = {
+ 	&sensor_dev_attr_in3_alarm.dev_attr.attr,
+ 	&sensor_dev_attr_in3_beep.dev_attr.attr,
+ 
+-	&sensor_dev_attr_in4_input.dev_attr.attr,	/* 17 */
++	&sensor_dev_attr_in4_input.dev_attr.attr,	/* 16 */
+ 	&sensor_dev_attr_in4_min.dev_attr.attr,
+ 	&sensor_dev_attr_in4_max.dev_attr.attr,
+ 	&sensor_dev_attr_in4_alarm.dev_attr.attr,
+@@ -794,9 +794,9 @@ static umode_t nct7802_in_is_visible(struct kobject *kobj,
+ 
+ 	if (index >= 6 && index < 11 && (reg & 0x03) != 0x03)	/* VSEN1 */
+ 		return 0;
+-	if (index >= 11 && index < 17 && (reg & 0x0c) != 0x0c)	/* VSEN2 */
++	if (index >= 11 && index < 16 && (reg & 0x0c) != 0x0c)	/* VSEN2 */
+ 		return 0;
+-	if (index >= 17 && (reg & 0x30) != 0x30)		/* VSEN3 */
++	if (index >= 16 && (reg & 0x30) != 0x30)		/* VSEN3 */
+ 		return 0;
+ 
+ 	return attr->mode;
+diff --git a/drivers/infiniband/core/addr.c b/drivers/infiniband/core/addr.c
+index 864a7c8d82d3..68835de07e07 100644
+--- a/drivers/infiniband/core/addr.c
++++ b/drivers/infiniband/core/addr.c
+@@ -481,14 +481,13 @@ int rdma_addr_find_dmac_by_grh(const union ib_gid *sgid, const union ib_gid *dgi
+ 	struct net_device *dev;
+ 
+ 	union {
+-		struct sockaddr     _sockaddr;
+ 		struct sockaddr_in  _sockaddr_in;
+ 		struct sockaddr_in6 _sockaddr_in6;
+ 	} sgid_addr, dgid_addr;
+ 
+ 
+-	rdma_gid2ip(&sgid_addr._sockaddr, sgid);
+-	rdma_gid2ip(&dgid_addr._sockaddr, dgid);
++	rdma_gid2ip((struct sockaddr *)&sgid_addr, sgid);
++	rdma_gid2ip((struct sockaddr *)&dgid_addr, dgid);
+ 
+ 	memset(&dev_addr, 0, sizeof(dev_addr));
+ 	dev_addr.bound_dev_if = if_index;
+@@ -496,8 +495,9 @@ int rdma_addr_find_dmac_by_grh(const union ib_gid *sgid, const union ib_gid *dgi
+ 
+ 	ctx.addr = &dev_addr;
+ 	init_completion(&ctx.comp);
+-	ret = rdma_resolve_ip(&self, &sgid_addr._sockaddr, &dgid_addr._sockaddr,
+-			&dev_addr, 1000, resolve_cb, &ctx);
++	ret = rdma_resolve_ip(&self, (struct sockaddr *)&sgid_addr,
++			      (struct sockaddr *)&dgid_addr, &dev_addr, 1000,
++			      resolve_cb, &ctx);
+ 	if (ret)
+ 		return ret;
+ 
+@@ -519,16 +519,15 @@ int rdma_addr_find_smac_by_sgid(union ib_gid *sgid, u8 *smac, u16 *vlan_id)
+ 	int ret = 0;
+ 	struct rdma_dev_addr dev_addr;
+ 	union {
+-		struct sockaddr     _sockaddr;
+ 		struct sockaddr_in  _sockaddr_in;
+ 		struct sockaddr_in6 _sockaddr_in6;
+ 	} gid_addr;
+ 
+-	rdma_gid2ip(&gid_addr._sockaddr, sgid);
++	rdma_gid2ip((struct sockaddr *)&gid_addr, sgid);
+ 
+ 	memset(&dev_addr, 0, sizeof(dev_addr));
+ 	dev_addr.net = &init_net;
+-	ret = rdma_translate_ip(&gid_addr._sockaddr, &dev_addr, vlan_id);
++	ret = rdma_translate_ip((struct sockaddr *)&gid_addr, &dev_addr, vlan_id);
+ 	if (ret)
+ 		return ret;
+ 
+diff --git a/drivers/infiniband/core/user_mad.c b/drivers/infiniband/core/user_mad.c
+index 57f281f8d686..e9e75f40714c 100644
+--- a/drivers/infiniband/core/user_mad.c
++++ b/drivers/infiniband/core/user_mad.c
+@@ -49,6 +49,7 @@
+ #include <linux/sched.h>
+ #include <linux/semaphore.h>
+ #include <linux/slab.h>
++#include <linux/nospec.h>
+ 
+ #include <asm/uaccess.h>
+ 
+@@ -842,11 +843,14 @@ static int ib_umad_unreg_agent(struct ib_umad_file *file, u32 __user *arg)
+ 
+ 	if (get_user(id, arg))
+ 		return -EFAULT;
++	if (id >= IB_UMAD_MAX_AGENTS)
++		return -EINVAL;
+ 
+ 	mutex_lock(&file->port->file_mutex);
+ 	mutex_lock(&file->mutex);
+ 
+-	if (id >= IB_UMAD_MAX_AGENTS || !__get_agent(file, id)) {
++	id = array_index_nospec(id, IB_UMAD_MAX_AGENTS);
++	if (!__get_agent(file, id)) {
+ 		ret = -EINVAL;
+ 		goto out;
+ 	}
+diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c
+index 3399271c235b..170368bb7c1d 100644
+--- a/drivers/infiniband/hw/mlx5/mr.c
++++ b/drivers/infiniband/hw/mlx5/mr.c
+@@ -792,7 +792,7 @@ static struct mlx5_ib_mr *reg_umr(struct ib_pd *pd, struct ib_umem *umem,
+ 	struct device *ddev = dev->ib_dev.dma_device;
+ 	struct umr_common *umrc = &dev->umrc;
+ 	struct mlx5_ib_umr_context umr_context;
+-	struct mlx5_umr_wr umrwr;
++	struct mlx5_umr_wr umrwr = {};
+ 	struct ib_send_wr *bad;
+ 	struct mlx5_ib_mr *mr;
+ 	struct ib_sge sg;
+@@ -839,7 +839,6 @@ static struct mlx5_ib_mr *reg_umr(struct ib_pd *pd, struct ib_umem *umem,
+ 		goto free_pas;
+ 	}
+ 
+-	memset(&umrwr, 0, sizeof(umrwr));
+ 	umrwr.wr.wr_id = (u64)(unsigned long)&umr_context;
+ 	prep_umr_reg_wqe(pd, &umrwr.wr, &sg, dma, npages, mr->mmr.key,
+ 			 page_shift, virt_addr, len, access_flags);
+@@ -1163,11 +1162,10 @@ static int unreg_umr(struct mlx5_ib_dev *dev, struct mlx5_ib_mr *mr)
+ {
+ 	struct umr_common *umrc = &dev->umrc;
+ 	struct mlx5_ib_umr_context umr_context;
+-	struct mlx5_umr_wr umrwr;
++	struct mlx5_umr_wr umrwr = {};
+ 	struct ib_send_wr *bad;
+ 	int err;
+ 
+-	memset(&umrwr.wr, 0, sizeof(umrwr));
+ 	umrwr.wr.wr_id = (u64)(unsigned long)&umr_context;
+ 	prep_umr_unreg_wqe(dev, &umrwr.wr, mr->mmr.key);
+ 
+diff --git a/drivers/input/joystick/iforce/iforce-usb.c b/drivers/input/joystick/iforce/iforce-usb.c
+index db64adfbe1af..3e1ea912b41d 100644
+--- a/drivers/input/joystick/iforce/iforce-usb.c
++++ b/drivers/input/joystick/iforce/iforce-usb.c
+@@ -145,7 +145,12 @@ static int iforce_usb_probe(struct usb_interface *intf,
+ 		return -ENODEV;
+ 
+ 	epirq = &interface->endpoint[0].desc;
++	if (!usb_endpoint_is_int_in(epirq))
++		return -ENODEV;
++
+ 	epout = &interface->endpoint[1].desc;
++	if (!usb_endpoint_is_int_out(epout))
++		return -ENODEV;
+ 
+ 	if (!(iforce = kzalloc(sizeof(struct iforce) + 32, GFP_KERNEL)))
+ 		goto fail;
+diff --git a/drivers/input/mouse/trackpoint.h b/drivers/input/mouse/trackpoint.h
+index 88055755f82e..821b446a85dd 100644
+--- a/drivers/input/mouse/trackpoint.h
++++ b/drivers/input/mouse/trackpoint.h
+@@ -153,7 +153,8 @@ struct trackpoint_data
+ #ifdef CONFIG_MOUSE_PS2_TRACKPOINT
+ int trackpoint_detect(struct psmouse *psmouse, bool set_properties);
+ #else
+-inline int trackpoint_detect(struct psmouse *psmouse, bool set_properties)
++static inline int trackpoint_detect(struct psmouse *psmouse,
++				    bool set_properties)
+ {
+ 	return -ENOSYS;
+ }
+diff --git a/drivers/input/tablet/kbtab.c b/drivers/input/tablet/kbtab.c
+index 2812f9236b7d..0ccc120a0f14 100644
+--- a/drivers/input/tablet/kbtab.c
++++ b/drivers/input/tablet/kbtab.c
+@@ -125,6 +125,10 @@ static int kbtab_probe(struct usb_interface *intf, const struct usb_device_id *i
+ 	if (intf->cur_altsetting->desc.bNumEndpoints < 1)
+ 		return -ENODEV;
+ 
++	endpoint = &intf->cur_altsetting->endpoint[0].desc;
++	if (!usb_endpoint_is_int_in(endpoint))
++		return -ENODEV;
++
+ 	kbtab = kzalloc(sizeof(struct kbtab), GFP_KERNEL);
+ 	input_dev = input_allocate_device();
+ 	if (!kbtab || !input_dev)
+@@ -164,8 +168,6 @@ static int kbtab_probe(struct usb_interface *intf, const struct usb_device_id *i
+ 	input_set_abs_params(input_dev, ABS_Y, 0, 0x1750, 4, 0);
+ 	input_set_abs_params(input_dev, ABS_PRESSURE, 0, 0xff, 0, 0);
+ 
+-	endpoint = &intf->cur_altsetting->endpoint[0].desc;
+-
+ 	usb_fill_int_urb(kbtab->irq, dev,
+ 			 usb_rcvintpipe(dev, endpoint->bEndpointAddress),
+ 			 kbtab->data, 8,
+diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c
+index db85cc5791dc..6a69b5bb231f 100644
+--- a/drivers/iommu/amd_iommu_init.c
++++ b/drivers/iommu/amd_iommu_init.c
+@@ -1223,7 +1223,7 @@ static const struct attribute_group *amd_iommu_groups[] = {
+ 	NULL,
+ };
+ 
+-static int iommu_init_pci(struct amd_iommu *iommu)
++static int __init iommu_init_pci(struct amd_iommu *iommu)
+ {
+ 	int cap_ptr = iommu->cap_ptr;
+ 	u32 range, misc, low, high;
+diff --git a/drivers/irqchip/irq-imx-gpcv2.c b/drivers/irqchip/irq-imx-gpcv2.c
+index 2d203b422129..c56da0b13da5 100644
+--- a/drivers/irqchip/irq-imx-gpcv2.c
++++ b/drivers/irqchip/irq-imx-gpcv2.c
+@@ -145,6 +145,7 @@ static struct irq_chip gpcv2_irqchip_data_chip = {
+ 	.irq_unmask		= imx_gpcv2_irq_unmask,
+ 	.irq_set_wake		= imx_gpcv2_irq_set_wake,
+ 	.irq_retrigger		= irq_chip_retrigger_hierarchy,
++	.irq_set_type		= irq_chip_set_type_parent,
+ #ifdef CONFIG_SMP
+ 	.irq_set_affinity	= irq_chip_set_affinity_parent,
+ #endif
+diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
+index ed80c973f546..168f2331194f 100644
+--- a/drivers/net/bonding/bond_main.c
++++ b/drivers/net/bonding/bond_main.c
+@@ -1111,7 +1111,9 @@ static void bond_compute_features(struct bonding *bond)
+ 
+ done:
+ 	bond_dev->vlan_features = vlan_features;
+-	bond_dev->hw_enc_features = enc_features | NETIF_F_GSO_ENCAP_ALL;
++	bond_dev->hw_enc_features = enc_features | NETIF_F_GSO_ENCAP_ALL |
++				    NETIF_F_HW_VLAN_CTAG_TX |
++				    NETIF_F_HW_VLAN_STAG_TX;
+ 	bond_dev->gso_max_segs = gso_max_segs;
+ 	netif_set_gso_max_size(bond_dev, gso_max_size);
+ 
+diff --git a/drivers/net/can/usb/peak_usb/pcan_usb_core.c b/drivers/net/can/usb/peak_usb/pcan_usb_core.c
+index 91be4575b524..e13bc27b4291 100644
+--- a/drivers/net/can/usb/peak_usb/pcan_usb_core.c
++++ b/drivers/net/can/usb/peak_usb/pcan_usb_core.c
+@@ -592,16 +592,16 @@ static int peak_usb_ndo_stop(struct net_device *netdev)
+ 	dev->state &= ~PCAN_USB_STATE_STARTED;
+ 	netif_stop_queue(netdev);
+ 
++	close_candev(netdev);
++
++	dev->can.state = CAN_STATE_STOPPED;
++
+ 	/* unlink all pending urbs and free used memory */
+ 	peak_usb_unlink_all_urbs(dev);
+ 
+ 	if (dev->adapter->dev_stop)
+ 		dev->adapter->dev_stop(dev);
+ 
+-	close_candev(netdev);
+-
+-	dev->can.state = CAN_STATE_STOPPED;
+-
+ 	/* can set bus off now */
+ 	if (dev->adapter->dev_set_bus) {
+ 		int err = dev->adapter->dev_set_bus(dev, 0);
+diff --git a/drivers/net/can/usb/peak_usb/pcan_usb_fd.c b/drivers/net/can/usb/peak_usb/pcan_usb_fd.c
+index 64cc86a82b2d..1b75d5304a2c 100644
+--- a/drivers/net/can/usb/peak_usb/pcan_usb_fd.c
++++ b/drivers/net/can/usb/peak_usb/pcan_usb_fd.c
+@@ -851,7 +851,7 @@ static int pcan_usb_fd_init(struct peak_usb_device *dev)
+ 			goto err_out;
+ 
+ 		/* allocate command buffer once for all for the interface */
+-		pdev->cmd_buffer_addr = kmalloc(PCAN_UFD_CMD_BUFFER_SIZE,
++		pdev->cmd_buffer_addr = kzalloc(PCAN_UFD_CMD_BUFFER_SIZE,
+ 						GFP_KERNEL);
+ 		if (!pdev->cmd_buffer_addr)
+ 			goto err_out_1;
+diff --git a/drivers/net/can/usb/peak_usb/pcan_usb_pro.c b/drivers/net/can/usb/peak_usb/pcan_usb_pro.c
+index bbdd6058cd2f..d85fdc6949c6 100644
+--- a/drivers/net/can/usb/peak_usb/pcan_usb_pro.c
++++ b/drivers/net/can/usb/peak_usb/pcan_usb_pro.c
+@@ -500,7 +500,7 @@ static int pcan_usb_pro_drv_loaded(struct peak_usb_device *dev, int loaded)
+ 	u8 *buffer;
+ 	int err;
+ 
+-	buffer = kmalloc(PCAN_USBPRO_FCT_DRVLD_REQ_LEN, GFP_KERNEL);
++	buffer = kzalloc(PCAN_USBPRO_FCT_DRVLD_REQ_LEN, GFP_KERNEL);
+ 	if (!buffer)
+ 		return -ENOMEM;
+ 
+diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
+index 7ee301310817..c1dd75fe935f 100644
+--- a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
++++ b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
+@@ -855,6 +855,9 @@ static int mlx5e_set_pauseparam(struct net_device *netdev,
+ 	struct mlx5_core_dev *mdev = priv->mdev;
+ 	int err;
+ 
++	if (!MLX5_CAP_GEN(mdev, vport_group_manager))
++		return -EOPNOTSUPP;
++
+ 	if (pauseparam->autoneg)
+ 		return -EINVAL;
+ 
+diff --git a/drivers/net/usb/pegasus.c b/drivers/net/usb/pegasus.c
+index 17fac0121e56..4f505eb4f422 100644
+--- a/drivers/net/usb/pegasus.c
++++ b/drivers/net/usb/pegasus.c
+@@ -285,7 +285,7 @@ static void mdio_write(struct net_device *dev, int phy_id, int loc, int val)
+ static int read_eprom_word(pegasus_t *pegasus, __u8 index, __u16 *retdata)
+ {
+ 	int i;
+-	__u8 tmp;
++	__u8 tmp = 0;
+ 	__le16 retdatai;
+ 	int ret;
+ 
+diff --git a/drivers/net/wireless/mwifiex/main.h b/drivers/net/wireless/mwifiex/main.h
+index 3959f1c97f4e..466ea4e551a6 100644
+--- a/drivers/net/wireless/mwifiex/main.h
++++ b/drivers/net/wireless/mwifiex/main.h
+@@ -108,6 +108,7 @@ enum {
+ 
+ #define MWIFIEX_MAX_TOTAL_SCAN_TIME	(MWIFIEX_TIMER_10S - MWIFIEX_TIMER_1S)
+ 
++#define WPA_GTK_OUI_OFFSET				2
+ #define RSN_GTK_OUI_OFFSET				2
+ 
+ #define MWIFIEX_OUI_NOT_PRESENT			0
+diff --git a/drivers/net/wireless/mwifiex/scan.c b/drivers/net/wireless/mwifiex/scan.c
+index 673ca812bd4c..b3fa3e4bed05 100644
+--- a/drivers/net/wireless/mwifiex/scan.c
++++ b/drivers/net/wireless/mwifiex/scan.c
+@@ -151,7 +151,8 @@ mwifiex_is_wpa_oui_present(struct mwifiex_bssdescriptor *bss_desc, u32 cipher)
+ 	if (((bss_desc->bcn_wpa_ie) &&
+ 	     ((*(bss_desc->bcn_wpa_ie)).vend_hdr.element_id ==
+ 	      WLAN_EID_VENDOR_SPECIFIC))) {
+-		iebody = (struct ie_body *) bss_desc->bcn_wpa_ie->data;
++		iebody = (struct ie_body *)((u8 *)bss_desc->bcn_wpa_ie->data +
++					    WPA_GTK_OUI_OFFSET);
+ 		oui = &mwifiex_wpa_oui[cipher][0];
+ 		ret = mwifiex_search_oui_in_ie(iebody, oui);
+ 		if (ret)
+diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c
+index d324ac308e6d..65d37257e033 100644
+--- a/drivers/net/xen-netback/netback.c
++++ b/drivers/net/xen-netback/netback.c
+@@ -1421,6 +1421,7 @@ static void xenvif_tx_build_gops(struct xenvif_queue *queue,
+ 			skb_shinfo(skb)->nr_frags = MAX_SKB_FRAGS;
+ 			nskb = xenvif_alloc_skb(0);
+ 			if (unlikely(nskb == NULL)) {
++				skb_shinfo(skb)->nr_frags = 0;
+ 				kfree_skb(skb);
+ 				xenvif_tx_err(queue, &txreq, idx);
+ 				if (net_ratelimit())
+@@ -1436,6 +1437,7 @@ static void xenvif_tx_build_gops(struct xenvif_queue *queue,
+ 
+ 			if (xenvif_set_skb_gso(queue->vif, skb, gso)) {
+ 				/* Failure in xenvif_set_skb_gso is fatal. */
++				skb_shinfo(skb)->nr_frags = 0;
+ 				kfree_skb(skb);
+ 				kfree_skb(nskb);
+ 				break;
+diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c
+index 8d7fc3b6ca63..adf322a86a01 100644
+--- a/drivers/s390/cio/qdio_main.c
++++ b/drivers/s390/cio/qdio_main.c
+@@ -1576,13 +1576,13 @@ static int handle_outbound(struct qdio_q *q, unsigned int callflags,
+ 		rc = qdio_kick_outbound_q(q, phys_aob);
+ 	} else if (need_siga_sync(q)) {
+ 		rc = qdio_siga_sync_q(q);
++	} else if (count < QDIO_MAX_BUFFERS_PER_Q &&
++		   get_buf_state(q, prev_buf(bufnr), &state, 0) > 0 &&
++		   state == SLSB_CU_OUTPUT_PRIMED) {
++		/* The previous buffer is not processed yet, tack on. */
++		qperf_inc(q, fast_requeue);
+ 	} else {
+-		/* try to fast requeue buffers */
+-		get_buf_state(q, prev_buf(bufnr), &state, 0);
+-		if (state != SLSB_CU_OUTPUT_PRIMED)
+-			rc = qdio_kick_outbound_q(q, 0);
+-		else
+-			qperf_inc(q, fast_requeue);
++		rc = qdio_kick_outbound_q(q, 0);
+ 	}
+ 
+ 	/* in case of SIGA errors we must process the error immediately */
+diff --git a/drivers/scsi/fcoe/fcoe_ctlr.c b/drivers/scsi/fcoe/fcoe_ctlr.c
+index d5184aa1ace4..3bc610d160f5 100644
+--- a/drivers/scsi/fcoe/fcoe_ctlr.c
++++ b/drivers/scsi/fcoe/fcoe_ctlr.c
+@@ -1973,7 +1973,7 @@ EXPORT_SYMBOL_GPL(fcoe_wwn_from_mac);
+  */
+ static inline struct fcoe_rport *fcoe_ctlr_rport(struct fc_rport_priv *rdata)
+ {
+-	return (struct fcoe_rport *)(rdata + 1);
++	return container_of(rdata, struct fcoe_rport, rdata);
+ }
+ 
+ /**
+@@ -2233,7 +2233,7 @@ static void fcoe_ctlr_vn_start(struct fcoe_ctlr *fip)
+  */
+ static int fcoe_ctlr_vn_parse(struct fcoe_ctlr *fip,
+ 			      struct sk_buff *skb,
+-			      struct fc_rport_priv *rdata)
++			      struct fcoe_rport *frport)
+ {
+ 	struct fip_header *fiph;
+ 	struct fip_desc *desc = NULL;
+@@ -2241,16 +2241,12 @@ static int fcoe_ctlr_vn_parse(struct fcoe_ctlr *fip,
+ 	struct fip_wwn_desc *wwn = NULL;
+ 	struct fip_vn_desc *vn = NULL;
+ 	struct fip_size_desc *size = NULL;
+-	struct fcoe_rport *frport;
+ 	size_t rlen;
+ 	size_t dlen;
+ 	u32 desc_mask = 0;
+ 	u32 dtype;
+ 	u8 sub;
+ 
+-	memset(rdata, 0, sizeof(*rdata) + sizeof(*frport));
+-	frport = fcoe_ctlr_rport(rdata);
+-
+ 	fiph = (struct fip_header *)skb->data;
+ 	frport->flags = ntohs(fiph->fip_flags);
+ 
+@@ -2313,15 +2309,17 @@ static int fcoe_ctlr_vn_parse(struct fcoe_ctlr *fip,
+ 			if (dlen != sizeof(struct fip_wwn_desc))
+ 				goto len_err;
+ 			wwn = (struct fip_wwn_desc *)desc;
+-			rdata->ids.node_name = get_unaligned_be64(&wwn->fd_wwn);
++			frport->rdata.ids.node_name =
++				get_unaligned_be64(&wwn->fd_wwn);
+ 			break;
+ 		case FIP_DT_VN_ID:
+ 			if (dlen != sizeof(struct fip_vn_desc))
+ 				goto len_err;
+ 			vn = (struct fip_vn_desc *)desc;
+ 			memcpy(frport->vn_mac, vn->fd_mac, ETH_ALEN);
+-			rdata->ids.port_id = ntoh24(vn->fd_fc_id);
+-			rdata->ids.port_name = get_unaligned_be64(&vn->fd_wwpn);
++			frport->rdata.ids.port_id = ntoh24(vn->fd_fc_id);
++			frport->rdata.ids.port_name =
++				get_unaligned_be64(&vn->fd_wwpn);
+ 			break;
+ 		case FIP_DT_FC4F:
+ 			if (dlen != sizeof(struct fip_fc4_feat))
+@@ -2664,16 +2662,13 @@ static int fcoe_ctlr_vn_recv(struct fcoe_ctlr *fip, struct sk_buff *skb)
+ {
+ 	struct fip_header *fiph;
+ 	enum fip_vn2vn_subcode sub;
+-	struct {
+-		struct fc_rport_priv rdata;
+-		struct fcoe_rport frport;
+-	} buf;
++	struct fcoe_rport frport = { };
+ 	int rc;
+ 
+ 	fiph = (struct fip_header *)skb->data;
+ 	sub = fiph->fip_subcode;
+ 
+-	rc = fcoe_ctlr_vn_parse(fip, skb, &buf.rdata);
++	rc = fcoe_ctlr_vn_parse(fip, skb, &frport);
+ 	if (rc) {
+ 		LIBFCOE_FIP_DBG(fip, "vn_recv vn_parse error %d\n", rc);
+ 		goto drop;
+@@ -2682,19 +2677,19 @@ static int fcoe_ctlr_vn_recv(struct fcoe_ctlr *fip, struct sk_buff *skb)
+ 	mutex_lock(&fip->ctlr_mutex);
+ 	switch (sub) {
+ 	case FIP_SC_VN_PROBE_REQ:
+-		fcoe_ctlr_vn_probe_req(fip, &buf.rdata);
++		fcoe_ctlr_vn_probe_req(fip, &frport.rdata);
+ 		break;
+ 	case FIP_SC_VN_PROBE_REP:
+-		fcoe_ctlr_vn_probe_reply(fip, &buf.rdata);
++		fcoe_ctlr_vn_probe_reply(fip, &frport.rdata);
+ 		break;
+ 	case FIP_SC_VN_CLAIM_NOTIFY:
+-		fcoe_ctlr_vn_claim_notify(fip, &buf.rdata);
++		fcoe_ctlr_vn_claim_notify(fip, &frport.rdata);
+ 		break;
+ 	case FIP_SC_VN_CLAIM_REP:
+-		fcoe_ctlr_vn_claim_resp(fip, &buf.rdata);
++		fcoe_ctlr_vn_claim_resp(fip, &frport.rdata);
+ 		break;
+ 	case FIP_SC_VN_BEACON:
+-		fcoe_ctlr_vn_beacon(fip, &buf.rdata);
++		fcoe_ctlr_vn_beacon(fip, &frport.rdata);
+ 		break;
+ 	default:
+ 		LIBFCOE_FIP_DBG(fip, "vn_recv unknown subcode %d\n", sub);
+diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
+index e0952882e132..fcce3ae119fa 100644
+--- a/drivers/scsi/hpsa.c
++++ b/drivers/scsi/hpsa.c
+@@ -2153,6 +2153,8 @@ static int handle_ioaccel_mode2_error(struct ctlr_info *h,
+ 	case IOACCEL2_SERV_RESPONSE_COMPLETE:
+ 		switch (c2->error_data.status) {
+ 		case IOACCEL2_STATUS_SR_TASK_COMP_GOOD:
++			if (cmd)
++				cmd->result = 0;
+ 			break;
+ 		case IOACCEL2_STATUS_SR_TASK_COMP_CHK_COND:
+ 			cmd->result |= SAM_STAT_CHECK_CONDITION;
+@@ -2320,8 +2322,10 @@ static void process_ioaccel2_completion(struct ctlr_info *h,
+ 
+ 	/* check for good status */
+ 	if (likely(c2->error_data.serv_response == 0 &&
+-			c2->error_data.status == 0))
++			c2->error_data.status == 0)) {
++		cmd->result = 0;
+ 		return hpsa_cmd_free_and_done(h, c, cmd);
++	}
+ 
+ 	/*
+ 	 * Any RAID offload error results in retry which will use
+@@ -5236,6 +5240,12 @@ static int hpsa_scsi_queue_command(struct Scsi_Host *sh, struct scsi_cmnd *cmd)
+ 	}
+ 	c = cmd_tagged_alloc(h, cmd);
+ 
++	/*
++	 * This is necessary because the SML doesn't zero out this field during
++	 * error recovery.
++	 */
++	cmd->result = 0;
++
+ 	/*
+ 	 * Call alternate submit routine for I/O accelerated commands.
+ 	 * Retries always go down the normal I/O path.
+diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c
+index 1f9f9e5af207..0526a47e30a3 100644
+--- a/drivers/scsi/ibmvscsi/ibmvfc.c
++++ b/drivers/scsi/ibmvscsi/ibmvfc.c
+@@ -4869,8 +4869,8 @@ static int ibmvfc_remove(struct vio_dev *vdev)
+ 
+ 	spin_lock_irqsave(vhost->host->host_lock, flags);
+ 	ibmvfc_purge_requests(vhost, DID_ERROR);
+-	ibmvfc_free_event_pool(vhost);
+ 	spin_unlock_irqrestore(vhost->host->host_lock, flags);
++	ibmvfc_free_event_pool(vhost);
+ 
+ 	ibmvfc_free_mem(vhost);
+ 	spin_lock(&ibmvfc_driver_lock);
+diff --git a/drivers/scsi/libfc/fc_rport.c b/drivers/scsi/libfc/fc_rport.c
+index 589ff9aedd31..e69940eefe4b 100644
+--- a/drivers/scsi/libfc/fc_rport.c
++++ b/drivers/scsi/libfc/fc_rport.c
+@@ -121,12 +121,15 @@ static struct fc_rport_priv *fc_rport_create(struct fc_lport *lport,
+ 					     u32 port_id)
+ {
+ 	struct fc_rport_priv *rdata;
++	size_t rport_priv_size = sizeof(*rdata);
+ 
+ 	rdata = lport->tt.rport_lookup(lport, port_id);
+ 	if (rdata)
+ 		return rdata;
+ 
+-	rdata = kzalloc(sizeof(*rdata) + lport->rport_priv_size, GFP_KERNEL);
++	if (lport->rport_priv_size > 0)
++		rport_priv_size = lport->rport_priv_size;
++	rdata = kzalloc(rport_priv_size, GFP_KERNEL);
+ 	if (!rdata)
+ 		return NULL;
+ 
+diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
+index 2422094f1f15..5e0bac8de638 100644
+--- a/drivers/scsi/megaraid/megaraid_sas_base.c
++++ b/drivers/scsi/megaraid/megaraid_sas_base.c
+@@ -2752,6 +2752,7 @@ megasas_fw_crash_buffer_show(struct device *cdev,
+ 	u32 size;
+ 	unsigned long buff_addr;
+ 	unsigned long dmachunk = CRASH_DMA_BUF_SIZE;
++	unsigned long chunk_left_bytes;
+ 	unsigned long src_addr;
+ 	unsigned long flags;
+ 	u32 buff_offset;
+@@ -2777,6 +2778,8 @@ megasas_fw_crash_buffer_show(struct device *cdev,
+ 	}
+ 
+ 	size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset;
++	chunk_left_bytes = dmachunk - (buff_offset % dmachunk);
++	size = (size > chunk_left_bytes) ? chunk_left_bytes : size;
+ 	size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
+ 
+ 	src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] +
+diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c
+index 9b5367294116..7af7a0859478 100644
+--- a/drivers/scsi/mpt3sas/mpt3sas_base.c
++++ b/drivers/scsi/mpt3sas/mpt3sas_base.c
+@@ -1686,9 +1686,11 @@ _base_config_dma_addressing(struct MPT3SAS_ADAPTER *ioc, struct pci_dev *pdev)
+ {
+ 	struct sysinfo s;
+ 	u64 consistent_dma_mask;
++	/* Set 63 bit DMA mask for all SAS3 and SAS35 controllers */
++	int dma_mask = (ioc->hba_mpi_version_belonged > MPI2_VERSION) ? 63 : 64;
+ 
+ 	if (ioc->dma_mask)
+-		consistent_dma_mask = DMA_BIT_MASK(64);
++		consistent_dma_mask = DMA_BIT_MASK(dma_mask);
+ 	else
+ 		consistent_dma_mask = DMA_BIT_MASK(32);
+ 
+@@ -1696,11 +1698,11 @@ _base_config_dma_addressing(struct MPT3SAS_ADAPTER *ioc, struct pci_dev *pdev)
+ 		const uint64_t required_mask =
+ 		    dma_get_required_mask(&pdev->dev);
+ 		if ((required_mask > DMA_BIT_MASK(32)) &&
+-		    !pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) &&
++		    !pci_set_dma_mask(pdev, DMA_BIT_MASK(dma_mask)) &&
+ 		    !pci_set_consistent_dma_mask(pdev, consistent_dma_mask)) {
+ 			ioc->base_add_sg_single = &_base_add_sg_single_64;
+ 			ioc->sge_size = sizeof(Mpi2SGESimple64_t);
+-			ioc->dma_mask = 64;
++			ioc->dma_mask = dma_mask;
+ 			goto out;
+ 		}
+ 	}
+@@ -1726,7 +1728,7 @@ static int
+ _base_change_consistent_dma_mask(struct MPT3SAS_ADAPTER *ioc,
+ 				      struct pci_dev *pdev)
+ {
+-	if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) {
++	if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(ioc->dma_mask))) {
+ 		if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
+ 			return -ENODEV;
+ 	}
+@@ -3325,7 +3327,7 @@ _base_allocate_memory_pools(struct MPT3SAS_ADAPTER *ioc,  int sleep_flag)
+ 		total_sz += sz;
+ 	} while (ioc->rdpq_array_enable && (++i < ioc->reply_queue_count));
+ 
+-	if (ioc->dma_mask == 64) {
++	if (ioc->dma_mask > 32) {
+ 		if (_base_change_consistent_dma_mask(ioc, ioc->pdev) != 0) {
+ 			pr_warn(MPT3SAS_FMT
+ 			    "no suitable consistent DMA mask for %s\n",
+diff --git a/drivers/staging/comedi/drivers/dt3000.c b/drivers/staging/comedi/drivers/dt3000.c
+index ab7a332fbcc4..6404cd4687b9 100644
+--- a/drivers/staging/comedi/drivers/dt3000.c
++++ b/drivers/staging/comedi/drivers/dt3000.c
+@@ -351,9 +351,9 @@ static irqreturn_t dt3k_interrupt(int irq, void *d)
+ static int dt3k_ns_to_timer(unsigned int timer_base, unsigned int *nanosec,
+ 			    unsigned int flags)
+ {
+-	int divider, base, prescale;
++	unsigned int divider, base, prescale;
+ 
+-	/* This function needs improvment */
++	/* This function needs improvement */
+ 	/* Don't know if divider==0 works. */
+ 
+ 	for (prescale = 0; prescale < 16; prescale++) {
+@@ -367,7 +367,7 @@ static int dt3k_ns_to_timer(unsigned int timer_base, unsigned int *nanosec,
+ 			divider = (*nanosec) / base;
+ 			break;
+ 		case CMDF_ROUND_UP:
+-			divider = (*nanosec) / base;
++			divider = DIV_ROUND_UP(*nanosec, base);
+ 			break;
+ 		}
+ 		if (divider < 65536) {
+@@ -377,7 +377,7 @@ static int dt3k_ns_to_timer(unsigned int timer_base, unsigned int *nanosec,
+ 	}
+ 
+ 	prescale = 15;
+-	base = timer_base * (1 << prescale);
++	base = timer_base * (prescale + 1);
+ 	divider = 65535;
+ 	*nanosec = divider * base;
+ 	return (prescale << 16) | (divider);
+diff --git a/drivers/tty/tty_ldsem.c b/drivers/tty/tty_ldsem.c
+index 34234c233851..656c2ade6a43 100644
+--- a/drivers/tty/tty_ldsem.c
++++ b/drivers/tty/tty_ldsem.c
+@@ -137,8 +137,7 @@ static void __ldsem_wake_readers(struct ld_semaphore *sem)
+ 
+ 	list_for_each_entry_safe(waiter, next, &sem->read_wait, list) {
+ 		tsk = waiter->task;
+-		smp_mb();
+-		waiter->task = NULL;
++		smp_store_release(&waiter->task, NULL);
+ 		wake_up_process(tsk);
+ 		put_task_struct(tsk);
+ 	}
+@@ -234,7 +233,7 @@ down_read_failed(struct ld_semaphore *sem, long count, long timeout)
+ 	for (;;) {
+ 		set_task_state(tsk, TASK_UNINTERRUPTIBLE);
+ 
+-		if (!waiter.task)
++		if (!smp_load_acquire(&waiter.task))
+ 			break;
+ 		if (!timeout)
+ 			break;
+diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
+index 736de1021d8b..1930a8ec4b67 100644
+--- a/drivers/usb/class/cdc-acm.c
++++ b/drivers/usb/class/cdc-acm.c
+@@ -1319,13 +1319,6 @@ made_compressed_probe:
+ 	if (acm == NULL)
+ 		goto alloc_fail;
+ 
+-	minor = acm_alloc_minor(acm);
+-	if (minor < 0) {
+-		dev_err(&intf->dev, "no more free acm devices\n");
+-		kfree(acm);
+-		return -ENODEV;
+-	}
+-
+ 	ctrlsize = usb_endpoint_maxp(epctrl);
+ 	readsize = usb_endpoint_maxp(epread) *
+ 				(quirks == SINGLE_RX_URB ? 1 : 2);
+@@ -1333,6 +1326,16 @@ made_compressed_probe:
+ 	acm->writesize = usb_endpoint_maxp(epwrite) * 20;
+ 	acm->control = control_interface;
+ 	acm->data = data_interface;
++
++	usb_get_intf(acm->control); /* undone in destruct() */
++
++	minor = acm_alloc_minor(acm);
++	if (minor < 0) {
++		dev_err(&intf->dev, "no more free acm devices\n");
++		kfree(acm);
++		return -ENODEV;
++	}
++
+ 	acm->minor = minor;
+ 	acm->dev = usb_dev;
+ 	acm->ctrl_caps = ac_management_function;
+@@ -1474,7 +1477,6 @@ skip_countries:
+ 	usb_driver_claim_interface(&acm_driver, data_interface, acm);
+ 	usb_set_intfdata(data_interface, acm);
+ 
+-	usb_get_intf(control_interface);
+ 	tty_dev = tty_port_register_device(&acm->port, acm_tty_driver, minor,
+ 			&control_interface->dev);
+ 	if (IS_ERR(tty_dev)) {
+diff --git a/drivers/usb/core/file.c b/drivers/usb/core/file.c
+index b3de806085f0..097977c0359f 100644
+--- a/drivers/usb/core/file.c
++++ b/drivers/usb/core/file.c
+@@ -191,9 +191,10 @@ int usb_register_dev(struct usb_interface *intf,
+ 		intf->minor = minor;
+ 		break;
+ 	}
+-	up_write(&minor_rwsem);
+-	if (intf->minor < 0)
++	if (intf->minor < 0) {
++		up_write(&minor_rwsem);
+ 		return -EXFULL;
++	}
+ 
+ 	/* create a usb class device for this usb interface */
+ 	snprintf(name, sizeof(name), class_driver->name, minor - minor_base);
+@@ -206,12 +207,11 @@ int usb_register_dev(struct usb_interface *intf,
+ 				      MKDEV(USB_MAJOR, minor), class_driver,
+ 				      "%s", temp);
+ 	if (IS_ERR(intf->usb_dev)) {
+-		down_write(&minor_rwsem);
+ 		usb_minors[minor] = NULL;
+ 		intf->minor = -1;
+-		up_write(&minor_rwsem);
+ 		retval = PTR_ERR(intf->usb_dev);
+ 	}
++	up_write(&minor_rwsem);
+ 	return retval;
+ }
+ EXPORT_SYMBOL_GPL(usb_register_dev);
+@@ -237,12 +237,12 @@ void usb_deregister_dev(struct usb_interface *intf,
+ 		return;
+ 
+ 	dev_dbg(&intf->dev, "removing %d minor\n", intf->minor);
++	device_destroy(usb_class->class, MKDEV(USB_MAJOR, intf->minor));
+ 
+ 	down_write(&minor_rwsem);
+ 	usb_minors[intf->minor] = NULL;
+ 	up_write(&minor_rwsem);
+ 
+-	device_destroy(usb_class->class, MKDEV(USB_MAJOR, intf->minor));
+ 	intf->usb_dev = NULL;
+ 	intf->minor = -1;
+ 	destroy_usb_class();
+diff --git a/drivers/usb/gadget/function/f_midi.c b/drivers/usb/gadget/function/f_midi.c
+index 5ead414586a1..8232850f7b80 100644
+--- a/drivers/usb/gadget/function/f_midi.c
++++ b/drivers/usb/gadget/function/f_midi.c
+@@ -364,9 +364,11 @@ static int f_midi_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
+ 		req->complete = f_midi_complete;
+ 		err = usb_ep_queue(midi->out_ep, req, GFP_ATOMIC);
+ 		if (err) {
+-			ERROR(midi, "%s queue req: %d\n",
++			ERROR(midi, "%s: couldn't enqueue request: %d\n",
+ 				    midi->out_ep->name, err);
+-			free_ep_req(midi->out_ep, req);
++			if (req->buf != NULL)
++				free_ep_req(midi->out_ep, req);
++			return err;
+ 		}
+ 	}
+ 
+diff --git a/drivers/usb/gadget/u_f.h b/drivers/usb/gadget/u_f.h
+index 69a1d10df04f..3ee365fbc2e2 100644
+--- a/drivers/usb/gadget/u_f.h
++++ b/drivers/usb/gadget/u_f.h
+@@ -65,7 +65,9 @@ struct usb_request *alloc_ep_req(struct usb_ep *ep, size_t len, int default_len)
+ /* Frees a usb_request previously allocated by alloc_ep_req() */
+ static inline void free_ep_req(struct usb_ep *ep, struct usb_request *req)
+ {
++	WARN_ON(req->buf == NULL);
+ 	kfree(req->buf);
++	req->buf = NULL;
+ 	usb_ep_free_request(ep, req);
+ }
+ 
+diff --git a/drivers/usb/misc/iowarrior.c b/drivers/usb/misc/iowarrior.c
+index 5e43fd881a9c..836fb65c3c72 100644
+--- a/drivers/usb/misc/iowarrior.c
++++ b/drivers/usb/misc/iowarrior.c
+@@ -898,19 +898,20 @@ static void iowarrior_disconnect(struct usb_interface *interface)
+ 	dev = usb_get_intfdata(interface);
+ 	mutex_lock(&iowarrior_open_disc_lock);
+ 	usb_set_intfdata(interface, NULL);
++	/* prevent device read, write and ioctl */
++	dev->present = 0;
+ 
+ 	minor = dev->minor;
++	mutex_unlock(&iowarrior_open_disc_lock);
++	/* give back our minor - this will call close() locks need to be dropped at this point*/
+ 
+-	/* give back our minor */
+ 	usb_deregister_dev(interface, &iowarrior_class);
+ 
+ 	mutex_lock(&dev->mutex);
+ 
+ 	/* prevent device read, write and ioctl */
+-	dev->present = 0;
+ 
+ 	mutex_unlock(&dev->mutex);
+-	mutex_unlock(&iowarrior_open_disc_lock);
+ 
+ 	if (dev->opened) {
+ 		/* There is a process that holds a filedescriptor to the device ,
+diff --git a/drivers/usb/misc/yurex.c b/drivers/usb/misc/yurex.c
+index a8b6d0036e5d..2222ec2275fc 100644
+--- a/drivers/usb/misc/yurex.c
++++ b/drivers/usb/misc/yurex.c
+@@ -96,7 +96,6 @@ static void yurex_delete(struct kref *kref)
+ 
+ 	dev_dbg(&dev->interface->dev, "%s\n", __func__);
+ 
+-	usb_put_dev(dev->udev);
+ 	if (dev->cntl_urb) {
+ 		usb_kill_urb(dev->cntl_urb);
+ 		kfree(dev->cntl_req);
+@@ -112,6 +111,7 @@ static void yurex_delete(struct kref *kref)
+ 				dev->int_buffer, dev->urb->transfer_dma);
+ 		usb_free_urb(dev->urb);
+ 	}
++	usb_put_dev(dev->udev);
+ 	kfree(dev);
+ }
+ 
+diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
+index d7b31fdce94d..1bceb11f3782 100644
+--- a/drivers/usb/serial/option.c
++++ b/drivers/usb/serial/option.c
+@@ -967,6 +967,11 @@ static const struct usb_device_id option_ids[] = {
+ 	{ USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, 0xff, 0x06, 0x7B) },
+ 	{ USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, 0xff, 0x06, 0x7C) },
+ 
++	/* Motorola devices */
++	{ USB_DEVICE_AND_INTERFACE_INFO(0x22b8, 0x2a70, 0xff, 0xff, 0xff) },	/* mdm6600 */
++	{ USB_DEVICE_AND_INTERFACE_INFO(0x22b8, 0x2e0a, 0xff, 0xff, 0xff) },	/* mdm9600 */
++	{ USB_DEVICE_AND_INTERFACE_INFO(0x22b8, 0x4281, 0x0a, 0x00, 0xfc) },	/* mdm ram dl */
++	{ USB_DEVICE_AND_INTERFACE_INFO(0x22b8, 0x900e, 0xff, 0xff, 0xff) },	/* mdm qc dl */
+ 
+ 	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_V640) },
+ 	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_V620) },
+@@ -1544,6 +1549,7 @@ static const struct usb_device_id option_ids[] = {
+ 	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1428, 0xff, 0xff, 0xff),  /* Telewell TW-LTE 4G v2 */
+ 	  .driver_info = RSVD(2) },
+ 	{ USB_DEVICE_INTERFACE_CLASS(ZTE_VENDOR_ID, 0x1476, 0xff) },	/* GosunCn ZTE WeLink ME3630 (ECM/NCM mode) */
++	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1481, 0xff, 0x00, 0x00) }, /* ZTE MF871A */
+ 	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1533, 0xff, 0xff, 0xff) },
+ 	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1534, 0xff, 0xff, 0xff) },
+ 	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1535, 0xff, 0xff, 0xff) },
+@@ -1949,11 +1955,15 @@ static const struct usb_device_id option_ids[] = {
+ 	  .driver_info = RSVD(4) },
+ 	{ USB_DEVICE_INTERFACE_CLASS(0x2001, 0x7e35, 0xff),			/* D-Link DWM-222 */
+ 	  .driver_info = RSVD(4) },
++	{ USB_DEVICE_INTERFACE_CLASS(0x2001, 0x7e3d, 0xff),			/* D-Link DWM-222 A2 */
++	  .driver_info = RSVD(4) },
+ 	{ USB_DEVICE_AND_INTERFACE_INFO(0x07d1, 0x3e01, 0xff, 0xff, 0xff) },	/* D-Link DWM-152/C1 */
+ 	{ USB_DEVICE_AND_INTERFACE_INFO(0x07d1, 0x3e02, 0xff, 0xff, 0xff) },	/* D-Link DWM-156/C1 */
+ 	{ USB_DEVICE_AND_INTERFACE_INFO(0x07d1, 0x7e11, 0xff, 0xff, 0xff) },	/* D-Link DWM-156/A3 */
+ 	{ USB_DEVICE_INTERFACE_CLASS(0x2020, 0x2031, 0xff),			/* Olicard 600 */
+ 	  .driver_info = RSVD(4) },
++	{ USB_DEVICE_INTERFACE_CLASS(0x2020, 0x2060, 0xff),			/* BroadMobi BM818 */
++	  .driver_info = RSVD(4) },
+ 	{ USB_DEVICE_INTERFACE_CLASS(0x2020, 0x4000, 0xff) },			/* OLICARD300 - MT6225 */
+ 	{ USB_DEVICE(INOVIA_VENDOR_ID, INOVIA_SEW858) },
+ 	{ USB_DEVICE(VIATELECOM_VENDOR_ID, VIATELECOM_PRODUCT_CDS7) },
+diff --git a/drivers/xen/xen-pciback/conf_space_capability.c b/drivers/xen/xen-pciback/conf_space_capability.c
+index 7f83e9083e9d..b1a1d7de0894 100644
+--- a/drivers/xen/xen-pciback/conf_space_capability.c
++++ b/drivers/xen/xen-pciback/conf_space_capability.c
+@@ -115,13 +115,12 @@ static int pm_ctrl_write(struct pci_dev *dev, int offset, u16 new_value,
+ {
+ 	int err;
+ 	u16 old_value;
+-	pci_power_t new_state, old_state;
++	pci_power_t new_state;
+ 
+ 	err = pci_read_config_word(dev, offset, &old_value);
+ 	if (err)
+ 		goto out;
+ 
+-	old_state = (pci_power_t)(old_value & PCI_PM_CTRL_STATE_MASK);
+ 	new_state = (pci_power_t)(new_value & PCI_PM_CTRL_STATE_MASK);
+ 
+ 	new_value &= PM_OK_BITS;
+diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
+index 5e21d58c49ef..84e60b3a5c7c 100644
+--- a/fs/cifs/smb2pdu.c
++++ b/fs/cifs/smb2pdu.c
+@@ -171,7 +171,7 @@ smb2_reconnect(__le16 smb2_command, struct cifs_tcon *tcon)
+ 	if (tcon == NULL)
+ 		return 0;
+ 
+-	if (smb2_command == SMB2_TREE_CONNECT)
++	if (smb2_command == SMB2_TREE_CONNECT || smb2_command == SMB2_IOCTL)
+ 		return 0;
+ 
+ 	if (tcon->tidStatus == CifsExiting) {
+@@ -677,7 +677,12 @@ ssetup_ntlmssp_authenticate:
+ 	else
+ 		req->SecurityMode = 0;
+ 
++#ifdef CONFIG_CIFS_DFS_UPCALL
++	req->Capabilities = cpu_to_le32(SMB2_GLOBAL_CAP_DFS);
++#else
+ 	req->Capabilities = 0;
++#endif /* DFS_UPCALL */
++
+ 	req->Channel = 0; /* MBZ */
+ 
+ 	iov[0].iov_base = (char *)req;
+diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c
+index 4f0788232f2f..06faa608e562 100644
+--- a/fs/ocfs2/xattr.c
++++ b/fs/ocfs2/xattr.c
+@@ -3808,7 +3808,6 @@ static int ocfs2_xattr_bucket_find(struct inode *inode,
+ 	u16 blk_per_bucket = ocfs2_blocks_per_xattr_bucket(inode->i_sb);
+ 	int low_bucket = 0, bucket, high_bucket;
+ 	struct ocfs2_xattr_bucket *search;
+-	u32 last_hash;
+ 	u64 blkno, lower_blkno = 0;
+ 
+ 	search = ocfs2_xattr_bucket_new(inode);
+@@ -3852,8 +3851,6 @@ static int ocfs2_xattr_bucket_find(struct inode *inode,
+ 		if (xh->xh_count)
+ 			xe = &xh->xh_entries[le16_to_cpu(xh->xh_count) - 1];
+ 
+-		last_hash = le32_to_cpu(xe->xe_name_hash);
+-
+ 		/* record lower_blkno which may be the insert place. */
+ 		lower_blkno = blkno;
+ 
+diff --git a/include/asm-generic/bug.h b/include/asm-generic/bug.h
+index 09aa521a0085..af2c3d4a6e6f 100644
+--- a/include/asm-generic/bug.h
++++ b/include/asm-generic/bug.h
+@@ -143,7 +143,7 @@ extern void warn_slowpath_null(const char *file, const int line);
+ #endif
+ 
+ #ifndef HAVE_ARCH_BUG_ON
+-#define BUG_ON(condition) do { if (condition) ; } while (0)
++#define BUG_ON(condition) do { if (condition) BUG(); } while (0)
+ #endif
+ 
+ #ifndef HAVE_ARCH_WARN_ON
+diff --git a/include/asm-generic/getorder.h b/include/asm-generic/getorder.h
+index 65e4468ac53d..52fbf236a90e 100644
+--- a/include/asm-generic/getorder.h
++++ b/include/asm-generic/getorder.h
+@@ -6,24 +6,6 @@
+ #include <linux/compiler.h>
+ #include <linux/log2.h>
+ 
+-/*
+- * Runtime evaluation of get_order()
+- */
+-static inline __attribute_const__
+-int __get_order(unsigned long size)
+-{
+-	int order;
+-
+-	size--;
+-	size >>= PAGE_SHIFT;
+-#if BITS_PER_LONG == 32
+-	order = fls(size);
+-#else
+-	order = fls64(size);
+-#endif
+-	return order;
+-}
+-
+ /**
+  * get_order - Determine the allocation order of a memory size
+  * @size: The size for which to get the order
+@@ -42,19 +24,27 @@ int __get_order(unsigned long size)
+  * to hold an object of the specified size.
+  *
+  * The result is undefined if the size is 0.
+- *
+- * This function may be used to initialise variables with compile time
+- * evaluations of constants.
+  */
+-#define get_order(n)						\
+-(								\
+-	__builtin_constant_p(n) ? (				\
+-		((n) == 0UL) ? BITS_PER_LONG - PAGE_SHIFT :	\
+-		(((n) < (1UL << PAGE_SHIFT)) ? 0 :		\
+-		 ilog2((n) - 1) - PAGE_SHIFT + 1)		\
+-	) :							\
+-	__get_order(n)						\
+-)
++static inline __attribute_const__ int get_order(unsigned long size)
++{
++	if (__builtin_constant_p(size)) {
++		if (!size)
++			return BITS_PER_LONG - PAGE_SHIFT;
++
++		if (size < (1UL << PAGE_SHIFT))
++			return 0;
++
++		return ilog2((size) - 1) - PAGE_SHIFT + 1;
++	}
++
++	size--;
++	size >>= PAGE_SHIFT;
++#if BITS_PER_LONG == 32
++	return fls(size);
++#else
++	return fls64(size);
++#endif
++}
+ 
+ #endif	/* __ASSEMBLY__ */
+ 
+diff --git a/include/linux/compiler.h b/include/linux/compiler.h
+index ed772311ec1f..5508011cc0c7 100644
+--- a/include/linux/compiler.h
++++ b/include/linux/compiler.h
+@@ -52,6 +52,22 @@ extern void __chk_io_ptr(const volatile void __iomem *);
+ 
+ #ifdef __KERNEL__
+ 
++/*
++ * Minimal backport of compiler_attributes.h to add support for __copy
++ * to v4.9.y so that we can use it in init/exit_module to avoid
++ * -Werror=missing-attributes errors on GCC 9.
++ */
++#ifndef __has_attribute
++# define __has_attribute(x) __GCC4_has_attribute_##x
++# define __GCC4_has_attribute___copy__                0
++#endif
++
++#if __has_attribute(__copy__)
++# define __copy(symbol)                 __attribute__((__copy__(symbol)))
++#else
++# define __copy(symbol)
++#endif
++
+ #ifdef __GNUC__
+ #include <linux/compiler-gcc.h>
+ #endif
+diff --git a/include/linux/module.h b/include/linux/module.h
+index dfe5c2e25ba1..d237d0574179 100644
+--- a/include/linux/module.h
++++ b/include/linux/module.h
+@@ -127,13 +127,13 @@ extern void cleanup_module(void);
+ #define module_init(initfn)					\
+ 	static inline initcall_t __maybe_unused __inittest(void)		\
+ 	{ return initfn; }					\
+-	int init_module(void) __attribute__((alias(#initfn)));
++	int init_module(void) __copy(initfn) __attribute__((alias(#initfn)));
+ 
+ /* This is only required if you want to be unloadable. */
+ #define module_exit(exitfn)					\
+ 	static inline exitcall_t __maybe_unused __exittest(void)		\
+ 	{ return exitfn; }					\
+-	void cleanup_module(void) __attribute__((alias(#exitfn)));
++	void cleanup_module(void) __copy(exitfn) __attribute__((alias(#exitfn)));
+ 
+ #endif
+ 
+diff --git a/include/scsi/libfcoe.h b/include/scsi/libfcoe.h
+index de7e3ee60f0c..e59180264591 100644
+--- a/include/scsi/libfcoe.h
++++ b/include/scsi/libfcoe.h
+@@ -236,6 +236,7 @@ struct fcoe_fcf {
+  * @vn_mac:	VN_Node assigned MAC address for data
+  */
+ struct fcoe_rport {
++	struct fc_rport_priv rdata;
+ 	unsigned long time;
+ 	u16 fcoe_len;
+ 	u16 flags;
+diff --git a/include/sound/compress_driver.h b/include/sound/compress_driver.h
+index 85ff3181e6f1..a5c6e6da3d3d 100644
+--- a/include/sound/compress_driver.h
++++ b/include/sound/compress_driver.h
+@@ -178,10 +178,7 @@ static inline void snd_compr_drain_notify(struct snd_compr_stream *stream)
+ 	if (snd_BUG_ON(!stream))
+ 		return;
+ 
+-	if (stream->direction == SND_COMPRESS_PLAYBACK)
+-		stream->runtime->state = SNDRV_PCM_STATE_SETUP;
+-	else
+-		stream->runtime->state = SNDRV_PCM_STATE_PREPARED;
++	stream->runtime->state = SNDRV_PCM_STATE_SETUP;
+ 
+ 	wake_up(&stream->runtime->sleep);
+ }
+diff --git a/kernel/events/core.c b/kernel/events/core.c
+index 41fe80e3380f..a7014f854e67 100644
+--- a/kernel/events/core.c
++++ b/kernel/events/core.c
+@@ -8757,7 +8757,7 @@ perf_event_create_kernel_counter(struct perf_event_attr *attr, int cpu,
+ 		goto err_free;
+ 	}
+ 
+-	perf_install_in_context(ctx, event, cpu);
++	perf_install_in_context(ctx, event, event->cpu);
+ 	perf_unpin_context(ctx);
+ 	mutex_unlock(&ctx->mutex);
+ 
+diff --git a/mm/memcontrol.c b/mm/memcontrol.c
+index 9a8e688724b1..a84eb0f8c5db 100644
+--- a/mm/memcontrol.c
++++ b/mm/memcontrol.c
+@@ -988,28 +988,47 @@ void mem_cgroup_iter_break(struct mem_cgroup *root,
+ 		css_put(&prev->css);
+ }
+ 
+-static void invalidate_reclaim_iterators(struct mem_cgroup *dead_memcg)
++static void __invalidate_reclaim_iterators(struct mem_cgroup *from,
++					struct mem_cgroup *dead_memcg)
+ {
+-	struct mem_cgroup *memcg = dead_memcg;
+ 	struct mem_cgroup_reclaim_iter *iter;
+ 	struct mem_cgroup_per_zone *mz;
+ 	int nid, zid;
+ 	int i;
+ 
+-	for (; memcg; memcg = parent_mem_cgroup(memcg)) {
+-		for_each_node(nid) {
+-			for (zid = 0; zid < MAX_NR_ZONES; zid++) {
+-				mz = &memcg->nodeinfo[nid]->zoneinfo[zid];
+-				for (i = 0; i <= DEF_PRIORITY; i++) {
+-					iter = &mz->iter[i];
+-					cmpxchg(&iter->position,
+-						dead_memcg, NULL);
+-				}
++	for_each_node(nid) {
++		for (zid = 0; zid < MAX_NR_ZONES; zid++) {
++			mz = &from->nodeinfo[nid]->zoneinfo[zid];
++			for (i = 0; i <= DEF_PRIORITY; i++) {
++				iter = &mz->iter[i];
++				cmpxchg(&iter->position,
++					dead_memcg, NULL);
+ 			}
+ 		}
+ 	}
+ }
+ 
++static void invalidate_reclaim_iterators(struct mem_cgroup *dead_memcg)
++{
++	struct mem_cgroup *memcg = dead_memcg;
++	struct mem_cgroup *last;
++
++	do {
++		__invalidate_reclaim_iterators(memcg, dead_memcg);
++		last = memcg;
++	} while ((memcg = parent_mem_cgroup(memcg)));
++
++	/*
++	 * When cgruop1 non-hierarchy mode is used,
++	 * parent_mem_cgroup() does not walk all the way up to the
++	 * cgroup root (root_mem_cgroup). So we have to handle
++	 * dead_memcg from cgroup root separately.
++	 */
++	if (last != root_mem_cgroup)
++		__invalidate_reclaim_iterators(root_mem_cgroup,
++						dead_memcg);
++}
++
+ /*
+  * Iteration constructs for visiting all cgroups (under a tree).  If
+  * loops are exited prematurely (break), mem_cgroup_iter_break() must
+diff --git a/mm/vmalloc.c b/mm/vmalloc.c
+index 7c556b59f0ec..d118e59a2bef 100644
+--- a/mm/vmalloc.c
++++ b/mm/vmalloc.c
+@@ -1677,6 +1677,12 @@ void *__vmalloc_node_range(unsigned long size, unsigned long align,
+ 	if (!addr)
+ 		return NULL;
+ 
++	/*
++	 * First make sure the mappings are removed from all page-tables
++	 * before they are freed.
++	 */
++	vmalloc_sync_all();
++
+ 	/*
+ 	 * In this function, newly allocated vm_struct has VM_UNINITIALIZED
+ 	 * flag. It means that vm_struct is not fully initialized.
+@@ -2214,6 +2220,9 @@ EXPORT_SYMBOL(remap_vmalloc_range);
+ /*
+  * Implement a stub for vmalloc_sync_all() if the architecture chose not to
+  * have one.
++ *
++ * The purpose of this function is to make sure the vmalloc area
++ * mappings are identical in all page-tables in the system.
+  */
+ void __weak vmalloc_sync_all(void)
+ {
+diff --git a/net/mac80211/driver-ops.c b/net/mac80211/driver-ops.c
+index c258f1041d33..df2e4e311217 100644
+--- a/net/mac80211/driver-ops.c
++++ b/net/mac80211/driver-ops.c
+@@ -169,11 +169,16 @@ int drv_conf_tx(struct ieee80211_local *local,
+ 	if (!check_sdata_in_driver(sdata))
+ 		return -EIO;
+ 
+-	if (WARN_ONCE(params->cw_min == 0 ||
+-		      params->cw_min > params->cw_max,
+-		      "%s: invalid CW_min/CW_max: %d/%d\n",
+-		      sdata->name, params->cw_min, params->cw_max))
++	if (params->cw_min == 0 || params->cw_min > params->cw_max) {
++		/*
++		 * If we can't configure hardware anyway, don't warn. We may
++		 * never have initialized the CW parameters.
++		 */
++		WARN_ONCE(local->ops->conf_tx,
++			  "%s: invalid CW_min/CW_max: %d/%d\n",
++			  sdata->name, params->cw_min, params->cw_max);
+ 		return -EINVAL;
++	}
+ 
+ 	trace_drv_conf_tx(local, sdata, ac, params);
+ 	if (local->ops->conf_tx)
+diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
+index 08384dbf426c..ae5387b93df3 100644
+--- a/net/mac80211/mlme.c
++++ b/net/mac80211/mlme.c
+@@ -1892,6 +1892,16 @@ static bool ieee80211_sta_wmm_params(struct ieee80211_local *local,
+ 		}
+ 	}
+ 
++	/* WMM specification requires all 4 ACIs. */
++	for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
++		if (params[ac].cw_min == 0) {
++			sdata_info(sdata,
++				   "AP has invalid WMM params (missing AC %d), using defaults\n",
++				   ac);
++			return false;
++		}
++	}
++
+ 	for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
+ 		mlme_dbg(sdata,
+ 			 "WMM AC=%d acm=%d aifs=%d cWmin=%d cWmax=%d txop=%d uapsd=%d, downgraded=%d\n",
+diff --git a/net/netfilter/nfnetlink.c b/net/netfilter/nfnetlink.c
+index 9adedba78eea..044559c10e98 100644
+--- a/net/netfilter/nfnetlink.c
++++ b/net/netfilter/nfnetlink.c
+@@ -495,7 +495,7 @@ static int nfnetlink_bind(struct net *net, int group)
+ 	ss = nfnetlink_get_subsys(type << 8);
+ 	rcu_read_unlock();
+ 	if (!ss)
+-		request_module("nfnetlink-subsys-%d", type);
++		request_module_nowait("nfnetlink-subsys-%d", type);
+ 	return 0;
+ }
+ #endif
+diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
+index c78bcc13ebab..5d8988185c59 100644
+--- a/net/packet/af_packet.c
++++ b/net/packet/af_packet.c
+@@ -2498,6 +2498,13 @@ static int tpacket_snd(struct packet_sock *po, struct msghdr *msg)
+ 
+ 	mutex_lock(&po->pg_vec_lock);
+ 
++	/* packet_sendmsg() check on tx_ring.pg_vec was lockless,
++	 * we need to confirm it under protection of pg_vec_lock.
++	 */
++	if (unlikely(!po->tx_ring.pg_vec)) {
++		err = -EBUSY;
++		goto out;
++	}
+ 	if (likely(saddr == NULL)) {
+ 		dev	= packet_cached_dev_get(po);
+ 		proto	= po->num;
+diff --git a/net/sctp/sm_sideeffect.c b/net/sctp/sm_sideeffect.c
+index 6098d4c42fa9..e5cd14307aa5 100644
+--- a/net/sctp/sm_sideeffect.c
++++ b/net/sctp/sm_sideeffect.c
+@@ -504,7 +504,7 @@ static void sctp_do_8_2_transport_strike(sctp_cmd_seq_t *commands,
+ 	 * see SCTP Quick Failover Draft, section 5.1
+ 	 */
+ 	if ((transport->state == SCTP_ACTIVE) &&
+-	   (asoc->pf_retrans < transport->pathmaxrxt) &&
++	   (transport->error_count < transport->pathmaxrxt) &&
+ 	   (transport->error_count > asoc->pf_retrans)) {
+ 
+ 		sctp_assoc_control_transport(asoc, transport,
+diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost
+index 1366a94b6c39..7718a64b1cd1 100644
+--- a/scripts/Makefile.modpost
++++ b/scripts/Makefile.modpost
+@@ -74,7 +74,7 @@ modpost = scripts/mod/modpost                    \
+  $(if $(CONFIG_MODULE_SRCVERSION_ALL),-a,)       \
+  $(if $(KBUILD_EXTMOD),-i,-o) $(kernelsymfile)   \
+  $(if $(KBUILD_EXTMOD),-I $(modulesymfile))      \
+- $(if $(KBUILD_EXTRA_SYMBOLS), $(patsubst %, -e %,$(KBUILD_EXTRA_SYMBOLS))) \
++ $(if $(KBUILD_EXTMOD),$(addprefix -e ,$(KBUILD_EXTRA_SYMBOLS))) \
+  $(if $(KBUILD_EXTMOD),-o $(modulesymfile))      \
+  $(if $(CONFIG_DEBUG_SECTION_MISMATCH),,-S)      \
+  $(if $(CONFIG_SECTION_MISMATCH_WARN_ONLY),,-E)  \
+diff --git a/sound/core/compress_offload.c b/sound/core/compress_offload.c
+index 3c88a3384064..771d7b334ad8 100644
+--- a/sound/core/compress_offload.c
++++ b/sound/core/compress_offload.c
+@@ -551,10 +551,7 @@ snd_compr_set_params(struct snd_compr_stream *stream, unsigned long arg)
+ 		stream->metadata_set = false;
+ 		stream->next_track = false;
+ 
+-		if (stream->direction == SND_COMPRESS_PLAYBACK)
+-			stream->runtime->state = SNDRV_PCM_STATE_SETUP;
+-		else
+-			stream->runtime->state = SNDRV_PCM_STATE_PREPARED;
++		stream->runtime->state = SNDRV_PCM_STATE_SETUP;
+ 	} else {
+ 		return -EPERM;
+ 	}
+@@ -670,8 +667,17 @@ static int snd_compr_start(struct snd_compr_stream *stream)
+ {
+ 	int retval;
+ 
+-	if (stream->runtime->state != SNDRV_PCM_STATE_PREPARED)
++	switch (stream->runtime->state) {
++	case SNDRV_PCM_STATE_SETUP:
++		if (stream->direction != SND_COMPRESS_CAPTURE)
++			return -EPERM;
++		break;
++	case SNDRV_PCM_STATE_PREPARED:
++		break;
++	default:
+ 		return -EPERM;
++	}
++
+ 	retval = stream->ops->trigger(stream, SNDRV_PCM_TRIGGER_START);
+ 	if (!retval)
+ 		stream->runtime->state = SNDRV_PCM_STATE_RUNNING;
+@@ -682,9 +688,15 @@ static int snd_compr_stop(struct snd_compr_stream *stream)
+ {
+ 	int retval;
+ 
+-	if (stream->runtime->state == SNDRV_PCM_STATE_PREPARED ||
+-			stream->runtime->state == SNDRV_PCM_STATE_SETUP)
++	switch (stream->runtime->state) {
++	case SNDRV_PCM_STATE_OPEN:
++	case SNDRV_PCM_STATE_SETUP:
++	case SNDRV_PCM_STATE_PREPARED:
+ 		return -EPERM;
++	default:
++		break;
++	}
++
+ 	retval = stream->ops->trigger(stream, SNDRV_PCM_TRIGGER_STOP);
+ 	if (!retval) {
+ 		snd_compr_drain_notify(stream);
+@@ -733,9 +745,17 @@ static int snd_compr_drain(struct snd_compr_stream *stream)
+ {
+ 	int retval;
+ 
+-	if (stream->runtime->state == SNDRV_PCM_STATE_PREPARED ||
+-			stream->runtime->state == SNDRV_PCM_STATE_SETUP)
++	switch (stream->runtime->state) {
++	case SNDRV_PCM_STATE_OPEN:
++	case SNDRV_PCM_STATE_SETUP:
++	case SNDRV_PCM_STATE_PREPARED:
++	case SNDRV_PCM_STATE_PAUSED:
+ 		return -EPERM;
++	case SNDRV_PCM_STATE_XRUN:
++		return -EPIPE;
++	default:
++		break;
++	}
+ 
+ 	retval = stream->ops->trigger(stream, SND_COMPR_TRIGGER_DRAIN);
+ 	if (retval) {
+@@ -772,9 +792,19 @@ static int snd_compr_next_track(struct snd_compr_stream *stream)
+ static int snd_compr_partial_drain(struct snd_compr_stream *stream)
+ {
+ 	int retval;
+-	if (stream->runtime->state == SNDRV_PCM_STATE_PREPARED ||
+-			stream->runtime->state == SNDRV_PCM_STATE_SETUP)
++
++	switch (stream->runtime->state) {
++	case SNDRV_PCM_STATE_OPEN:
++	case SNDRV_PCM_STATE_SETUP:
++	case SNDRV_PCM_STATE_PREPARED:
++	case SNDRV_PCM_STATE_PAUSED:
+ 		return -EPERM;
++	case SNDRV_PCM_STATE_XRUN:
++		return -EPIPE;
++	default:
++		break;
++	}
++
+ 	/* stream can be drained only when next track has been signalled */
+ 	if (stream->next_track == false)
+ 		return -EPERM;
+diff --git a/sound/firewire/packets-buffer.c b/sound/firewire/packets-buffer.c
+index ea1506679c66..3b09b8ef3a09 100644
+--- a/sound/firewire/packets-buffer.c
++++ b/sound/firewire/packets-buffer.c
+@@ -37,7 +37,7 @@ int iso_packets_buffer_init(struct iso_packets_buffer *b, struct fw_unit *unit,
+ 	packets_per_page = PAGE_SIZE / packet_size;
+ 	if (WARN_ON(!packets_per_page)) {
+ 		err = -EINVAL;
+-		goto error;
++		goto err_packets;
+ 	}
+ 	pages = DIV_ROUND_UP(count, packets_per_page);
+ 
+diff --git a/sound/pci/hda/hda_generic.c b/sound/pci/hda/hda_generic.c
+index 689df78f640a..142549bbeb53 100644
+--- a/sound/pci/hda/hda_generic.c
++++ b/sound/pci/hda/hda_generic.c
+@@ -5917,7 +5917,7 @@ static int snd_hda_parse_generic_codec(struct hda_codec *codec)
+ 
+ 	err = snd_hda_parse_pin_defcfg(codec, &spec->autocfg, NULL, 0);
+ 	if (err < 0)
+-		return err;
++		goto error;
+ 
+ 	err = snd_hda_gen_parse_auto_config(codec, &spec->autocfg);
+ 	if (err < 0)
+diff --git a/sound/sound_core.c b/sound/sound_core.c
+index 99b73c675743..20d4e2e1bacf 100644
+--- a/sound/sound_core.c
++++ b/sound/sound_core.c
+@@ -287,7 +287,8 @@ retry:
+ 				goto retry;
+ 			}
+ 			spin_unlock(&sound_loader_lock);
+-			return -EBUSY;
++			r = -EBUSY;
++			goto fail;
+ 		}
+ 	}
+ 
+diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c
+index 9d4ac90ca87e..66fb1d53d0f0 100644
+--- a/tools/perf/builtin-probe.c
++++ b/tools/perf/builtin-probe.c
+@@ -613,6 +613,16 @@ __cmd_probe(int argc, const char **argv, const char *prefix __maybe_unused)
+ 
+ 		ret = perf_add_probe_events(params.events, params.nevents);
+ 		if (ret < 0) {
++
++			/*
++			 * When perf_add_probe_events() fails it calls
++			 * cleanup_perf_probe_events(pevs, npevs), i.e.
++			 * cleanup_perf_probe_events(params.events, params.nevents), which
++			 * will call clear_perf_probe_event(), so set nevents to zero
++			 * to avoid cleanup_params() to call clear_perf_probe_event() again
++			 * on the same pevs.
++			 */
++			params.nevents = 0;
+ 			pr_err_with_code("  Error: Failed to add events.", ret);
+ 			return ret;
+ 		}
+diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
+index 304f5d710143..81ceb4ace88d 100644
+--- a/tools/perf/util/header.c
++++ b/tools/perf/util/header.c
+@@ -2591,6 +2591,13 @@ int perf_session__read_header(struct perf_session *session)
+ 			   file->path);
+ 	}
+ 
++	if (f_header.attr_size == 0) {
++		pr_err("ERROR: The %s file's attr size field is 0 which is unexpected.\n"
++		       "Was the 'perf record' command properly terminated?\n",
++		       file->path);
++		return -EINVAL;
++	}
++
+ 	nr_attrs = f_header.attrs.size / f_header.attr_size;
+ 	lseek(fd, f_header.attrs.offset, SEEK_SET);
+ 
+@@ -2673,7 +2680,7 @@ int perf_event__synthesize_attr(struct perf_tool *tool,
+ 	size += sizeof(struct perf_event_header);
+ 	size += ids * sizeof(u64);
+ 
+-	ev = malloc(size);
++	ev = zalloc(size);
+ 
+ 	if (ev == NULL)
+ 		return -ENOMEM;
+diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c
+index 829508a21448..45c19b443f2f 100644
+--- a/tools/perf/util/thread.c
++++ b/tools/perf/util/thread.c
+@@ -110,14 +110,24 @@ struct comm *thread__comm(const struct thread *thread)
+ 
+ struct comm *thread__exec_comm(const struct thread *thread)
+ {
+-	struct comm *comm, *last = NULL;
++	struct comm *comm, *last = NULL, *second_last = NULL;
+ 
+ 	list_for_each_entry(comm, &thread->comm_list, list) {
+ 		if (comm->exec)
+ 			return comm;
++		second_last = last;
+ 		last = comm;
+ 	}
+ 
++	/*
++	 * 'last' with no start time might be the parent's comm of a synthesized
++	 * thread (created by processing a synthesized fork event). For a main
++	 * thread, that is very probably wrong. Prefer a later comm to avoid
++	 * that case.
++	 */
++	if (second_last && !last->start && thread->pid_ == thread->tid)
++		return second_last;
++
+ 	return last;
+ }
+