kernel-alx-legacy/patches-4.9/0128-4.9.29-all-fixes.patch

diff --git a/Makefile b/Makefile
index 9460a63087b8..c12e501a18b8 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 VERSION = 4
 PATCHLEVEL = 9
-SUBLEVEL = 28
+SUBLEVEL = 29
 EXTRAVERSION =
 NAME = Roaring Lionus
 
diff --git a/arch/arm/kvm/psci.c b/arch/arm/kvm/psci.c
index c2b131527a64..a08d7a93aebb 100644
--- a/arch/arm/kvm/psci.c
+++ b/arch/arm/kvm/psci.c
@@ -208,9 +208,10 @@ int kvm_psci_version(struct kvm_vcpu *vcpu)
 
 static int kvm_psci_0_2_call(struct kvm_vcpu *vcpu)
 {
-	int ret = 1;
+	struct kvm *kvm = vcpu->kvm;
 	unsigned long psci_fn = vcpu_get_reg(vcpu, 0) & ~((u32) 0);
 	unsigned long val;
+	int ret = 1;
 
 	switch (psci_fn) {
 	case PSCI_0_2_FN_PSCI_VERSION:
@@ -230,7 +231,9 @@ static int kvm_psci_0_2_call(struct kvm_vcpu *vcpu)
 		break;
 	case PSCI_0_2_FN_CPU_ON:
 	case PSCI_0_2_FN64_CPU_ON:
+		mutex_lock(&kvm->lock);
 		val = kvm_psci_vcpu_on(vcpu);
+		mutex_unlock(&kvm->lock);
 		break;
 	case PSCI_0_2_FN_AFFINITY_INFO:
 	case PSCI_0_2_FN64_AFFINITY_INFO:
@@ -279,6 +282,7 @@ static int kvm_psci_0_2_call(struct kvm_vcpu *vcpu)
 
 static int kvm_psci_0_1_call(struct kvm_vcpu *vcpu)
 {
+	struct kvm *kvm = vcpu->kvm;
 	unsigned long psci_fn = vcpu_get_reg(vcpu, 0) & ~((u32) 0);
 	unsigned long val;
 
@@ -288,7 +292,9 @@ static int kvm_psci_0_1_call(struct kvm_vcpu *vcpu)
 		val = PSCI_RET_SUCCESS;
 		break;
 	case KVM_PSCI_FN_CPU_ON:
+		mutex_lock(&kvm->lock);
 		val = kvm_psci_vcpu_on(vcpu);
+		mutex_unlock(&kvm->lock);
 		break;
 	default:
 		val = PSCI_RET_NOT_SUPPORTED;
diff --git a/arch/arm64/include/asm/kvm_emulate.h b/arch/arm64/include/asm/kvm_emulate.h
index f5ea0ba70f07..fe39e6841326 100644
--- a/arch/arm64/include/asm/kvm_emulate.h
+++ b/arch/arm64/include/asm/kvm_emulate.h
@@ -240,6 +240,12 @@ static inline u8 kvm_vcpu_trap_get_fault_type(const struct kvm_vcpu *vcpu)
 	return kvm_vcpu_get_hsr(vcpu) & ESR_ELx_FSC_TYPE;
 }
 
+static inline int kvm_vcpu_sys_get_rt(struct kvm_vcpu *vcpu)
+{
+	u32 esr = kvm_vcpu_get_hsr(vcpu);
+	return (esr & ESR_ELx_SYS64_ISS_RT_MASK) >> ESR_ELx_SYS64_ISS_RT_SHIFT;
+}
+
 static inline unsigned long kvm_vcpu_get_mpidr_aff(struct kvm_vcpu *vcpu)
 {
 	return vcpu_sys_reg(vcpu, MPIDR_EL1) & MPIDR_HWID_BITMASK;
diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index 87e7e6608cd8..7cee552ce0bf 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -1573,8 +1573,8 @@ static int kvm_handle_cp_64(struct kvm_vcpu *vcpu,
 {
 	struct sys_reg_params params;
 	u32 hsr = kvm_vcpu_get_hsr(vcpu);
-	int Rt = (hsr >> 5) & 0xf;
-	int Rt2 = (hsr >> 10) & 0xf;
+	int Rt = kvm_vcpu_sys_get_rt(vcpu);
+	int Rt2 = (hsr >> 10) & 0x1f;
 
 	params.is_aarch32 = true;
 	params.is_32bit = false;
@@ -1625,7 +1625,7 @@ static int kvm_handle_cp_32(struct kvm_vcpu *vcpu,
 {
 	struct sys_reg_params params;
 	u32 hsr = kvm_vcpu_get_hsr(vcpu);
-	int Rt  = (hsr >> 5) & 0xf;
+	int Rt  = kvm_vcpu_sys_get_rt(vcpu);
 
 	params.is_aarch32 = true;
 	params.is_32bit = true;
@@ -1740,7 +1740,7 @@ int kvm_handle_sys_reg(struct kvm_vcpu *vcpu, struct kvm_run *run)
 {
 	struct sys_reg_params params;
 	unsigned long esr = kvm_vcpu_get_hsr(vcpu);
-	int Rt = (esr >> 5) & 0x1f;
+	int Rt = kvm_vcpu_sys_get_rt(vcpu);
 	int ret;
 
 	trace_kvm_handle_sys_reg(esr);
diff --git a/arch/powerpc/kernel/nvram_64.c b/arch/powerpc/kernel/nvram_64.c
index 34d2c595de23..73622673eee3 100644
--- a/arch/powerpc/kernel/nvram_64.c
+++ b/arch/powerpc/kernel/nvram_64.c
@@ -561,6 +561,7 @@ static ssize_t nvram_pstore_read(u64 *id, enum pstore_type_id *type,
 static struct pstore_info nvram_pstore_info = {
 	.owner = THIS_MODULE,
 	.name = "nvram",
+	.flags = PSTORE_FLAGS_DMESG,
 	.open = nvram_pstore_open,
 	.read = nvram_pstore_read,
 	.write = nvram_pstore_write,
diff --git a/arch/x86/boot/boot.h b/arch/x86/boot/boot.h
index e5612f3e3b57..d7ac721a8a96 100644
--- a/arch/x86/boot/boot.h
+++ b/arch/x86/boot/boot.h
@@ -16,7 +16,7 @@
 #ifndef BOOT_BOOT_H
 #define BOOT_BOOT_H
 
-#define STACK_SIZE	512	/* Minimum number of bytes for stack */
+#define STACK_SIZE	1024	/* Minimum number of bytes for stack */
 
 #ifndef __ASSEMBLY__
 
diff --git a/arch/x86/events/intel/rapl.c b/arch/x86/events/intel/rapl.c
index 0a535cea8ff3..8b902b67342a 100644
--- a/arch/x86/events/intel/rapl.c
+++ b/arch/x86/events/intel/rapl.c
@@ -759,7 +759,7 @@ static const struct x86_cpu_id rapl_cpu_match[] __initconst = {
 
 	X86_RAPL_MODEL_MATCH(INTEL_FAM6_BROADWELL_CORE,   hsw_rapl_init),
 	X86_RAPL_MODEL_MATCH(INTEL_FAM6_BROADWELL_GT3E,   hsw_rapl_init),
-	X86_RAPL_MODEL_MATCH(INTEL_FAM6_BROADWELL_X,	  hsw_rapl_init),
+	X86_RAPL_MODEL_MATCH(INTEL_FAM6_BROADWELL_X,	  hsx_rapl_init),
 	X86_RAPL_MODEL_MATCH(INTEL_FAM6_BROADWELL_XEON_D, hsw_rapl_init),
 
 	X86_RAPL_MODEL_MATCH(INTEL_FAM6_XEON_PHI_KNL, knl_rapl_init),
diff --git a/arch/x86/include/asm/pmem.h b/arch/x86/include/asm/pmem.h
index 529bb4a6487a..e2904373010d 100644
--- a/arch/x86/include/asm/pmem.h
+++ b/arch/x86/include/asm/pmem.h
@@ -103,7 +103,7 @@ static inline size_t arch_copy_from_iter_pmem(void *addr, size_t bytes,
 
 		if (bytes < 8) {
 			if (!IS_ALIGNED(dest, 4) || (bytes != 4))
-				arch_wb_cache_pmem(addr, 1);
+				arch_wb_cache_pmem(addr, bytes);
 		} else {
 			if (!IS_ALIGNED(dest, 8)) {
 				dest = ALIGN(dest, boot_cpu_data.x86_clflush_size);
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index e5bc139d1ba7..43c152853969 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -3051,6 +3051,12 @@ static int kvm_vcpu_ioctl_x86_set_vcpu_events(struct kvm_vcpu *vcpu,
 	    (events->exception.nr > 31 || events->exception.nr == NMI_VECTOR))
 		return -EINVAL;
 
+	/* INITs are latched while in SMM */
+	if (events->flags & KVM_VCPUEVENT_VALID_SMM &&
+	    (events->smi.smm || events->smi.pending) &&
+	    vcpu->arch.mp_state == KVM_MP_STATE_INIT_RECEIVED)
+		return -EINVAL;
+
 	process_nmi(vcpu);
 	vcpu->arch.exception.pending = events->exception.injected;
 	vcpu->arch.exception.nr = events->exception.nr;
@@ -7162,6 +7168,12 @@ int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
 	    mp_state->mp_state != KVM_MP_STATE_RUNNABLE)
 		return -EINVAL;
 
+	/* INITs are latched while in SMM */
+	if ((is_smm(vcpu) || vcpu->arch.smi_pending) &&
+	    (mp_state->mp_state == KVM_MP_STATE_SIPI_RECEIVED ||
+	     mp_state->mp_state == KVM_MP_STATE_INIT_RECEIVED))
+		return -EINVAL;
+
 	if (mp_state->mp_state == KVM_MP_STATE_SIPI_RECEIVED) {
 		vcpu->arch.mp_state = KVM_MP_STATE_INIT_RECEIVED;
 		set_bit(KVM_APIC_SIPI, &vcpu->arch.apic->pending_events);
diff --git a/arch/x86/um/ptrace_64.c b/arch/x86/um/ptrace_64.c
index e30202b1716e..7c1601798169 100644
--- a/arch/x86/um/ptrace_64.c
+++ b/arch/x86/um/ptrace_64.c
@@ -125,7 +125,7 @@ int poke_user(struct task_struct *child, long addr, long data)
 	else if ((addr >= offsetof(struct user, u_debugreg[0])) &&
 		(addr <= offsetof(struct user, u_debugreg[7]))) {
 		addr -= offsetof(struct user, u_debugreg[0]);
-		addr = addr >> 2;
+		addr = addr >> 3;
 		if ((addr == 4) || (addr == 5))
 			return -EIO;
 		child->thread.arch.debugregs[addr] = data;
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 7d5afdb417cc..418f1b8576cf 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -2028,7 +2028,8 @@ static unsigned long __init xen_read_phys_ulong(phys_addr_t addr)
 
 /*
  * Translate a virtual address to a physical one without relying on mapped
- * page tables.
+ * page tables. Don't rely on big pages being aligned in (guest) physical
+ * space!
  */
 static phys_addr_t __init xen_early_virt_to_phys(unsigned long vaddr)
 {
@@ -2049,7 +2050,7 @@ static phys_addr_t __init xen_early_virt_to_phys(unsigned long vaddr)
 						       sizeof(pud)));
 	if (!pud_present(pud))
 		return 0;
-	pa = pud_pfn(pud) << PAGE_SHIFT;
+	pa = pud_val(pud) & PTE_PFN_MASK;
 	if (pud_large(pud))
 		return pa + (vaddr & ~PUD_MASK);
 
@@ -2057,7 +2058,7 @@ static phys_addr_t __init xen_early_virt_to_phys(unsigned long vaddr)
 						       sizeof(pmd)));
 	if (!pmd_present(pmd))
 		return 0;
-	pa = pmd_pfn(pmd) << PAGE_SHIFT;
+	pa = pmd_val(pmd) & PTE_PFN_MASK;
 	if (pmd_large(pmd))
 		return pa + (vaddr & ~PMD_MASK);
 
diff --git a/block/blk-integrity.c b/block/blk-integrity.c
index 319f2e4f4a8b..478f572cb1e7 100644
--- a/block/blk-integrity.c
+++ b/block/blk-integrity.c
@@ -412,7 +412,8 @@ void blk_integrity_register(struct gendisk *disk, struct blk_integrity *template
 
 	bi->flags = BLK_INTEGRITY_VERIFY | BLK_INTEGRITY_GENERATE |
 		template->flags;
-	bi->interval_exp = ilog2(queue_logical_block_size(disk->queue));
+	bi->interval_exp = template->interval_exp ? :
+		ilog2(queue_logical_block_size(disk->queue));
 	bi->profile = template->profile ? template->profile : &nop_profile;
 	bi->tuple_size = template->tuple_size;
 	bi->tag_size = template->tag_size;
diff --git a/crypto/algif_aead.c b/crypto/algif_aead.c
index fde8d885f7b6..6c11537ca404 100644
--- a/crypto/algif_aead.c
+++ b/crypto/algif_aead.c
@@ -44,6 +44,11 @@ struct aead_async_req {
 	char iv[];
 };
 
+struct aead_tfm {
+	struct crypto_aead *aead;
+	bool has_key;
+};
+
 struct aead_ctx {
 	struct aead_sg_list tsgl;
 	struct aead_async_rsgl first_rsgl;
@@ -732,24 +737,146 @@ static struct proto_ops algif_aead_ops = {
 	.poll		=	aead_poll,
 };
 
+static int aead_check_key(struct socket *sock)
+{
+	int err = 0;
+	struct sock *psk;
+	struct alg_sock *pask;
+	struct aead_tfm *tfm;
+	struct sock *sk = sock->sk;
+	struct alg_sock *ask = alg_sk(sk);
+
+	lock_sock(sk);
+	if (ask->refcnt)
+		goto unlock_child;
+
+	psk = ask->parent;
+	pask = alg_sk(ask->parent);
+	tfm = pask->private;
+
+	err = -ENOKEY;
+	lock_sock_nested(psk, SINGLE_DEPTH_NESTING);
+	if (!tfm->has_key)
+		goto unlock;
+
+	if (!pask->refcnt++)
+		sock_hold(psk);
+
+	ask->refcnt = 1;
+	sock_put(psk);
+
+	err = 0;
+
+unlock:
+	release_sock(psk);
+unlock_child:
+	release_sock(sk);
+
+	return err;
+}
+
+static int aead_sendmsg_nokey(struct socket *sock, struct msghdr *msg,
+				  size_t size)
+{
+	int err;
+
+	err = aead_check_key(sock);
+	if (err)
+		return err;
+
+	return aead_sendmsg(sock, msg, size);
+}
+
+static ssize_t aead_sendpage_nokey(struct socket *sock, struct page *page,
+				       int offset, size_t size, int flags)
+{
+	int err;
+
+	err = aead_check_key(sock);
+	if (err)
+		return err;
+
+	return aead_sendpage(sock, page, offset, size, flags);
+}
+
+static int aead_recvmsg_nokey(struct socket *sock, struct msghdr *msg,
+				  size_t ignored, int flags)
+{
+	int err;
+
+	err = aead_check_key(sock);
+	if (err)
+		return err;
+
+	return aead_recvmsg(sock, msg, ignored, flags);
+}
+
+static struct proto_ops algif_aead_ops_nokey = {
+	.family		=	PF_ALG,
+
+	.connect	=	sock_no_connect,
+	.socketpair	=	sock_no_socketpair,
+	.getname	=	sock_no_getname,
+	.ioctl		=	sock_no_ioctl,
+	.listen		=	sock_no_listen,
+	.shutdown	=	sock_no_shutdown,
+	.getsockopt	=	sock_no_getsockopt,
+	.mmap		=	sock_no_mmap,
+	.bind		=	sock_no_bind,
+	.accept		=	sock_no_accept,
+	.setsockopt	=	sock_no_setsockopt,
+
+	.release	=	af_alg_release,
+	.sendmsg	=	aead_sendmsg_nokey,
+	.sendpage	=	aead_sendpage_nokey,
+	.recvmsg	=	aead_recvmsg_nokey,
+	.poll		=	aead_poll,
+};
+
 static void *aead_bind(const char *name, u32 type, u32 mask)
 {
-	return crypto_alloc_aead(name, type, mask);
+	struct aead_tfm *tfm;
+	struct crypto_aead *aead;
+
+	tfm = kzalloc(sizeof(*tfm), GFP_KERNEL);
+	if (!tfm)
+		return ERR_PTR(-ENOMEM);
+
+	aead = crypto_alloc_aead(name, type, mask);
+	if (IS_ERR(aead)) {
+		kfree(tfm);
+		return ERR_CAST(aead);
+	}
+
+	tfm->aead = aead;
+
+	return tfm;
 }
 
 static void aead_release(void *private)
 {
-	crypto_free_aead(private);
+	struct aead_tfm *tfm = private;
+
+	crypto_free_aead(tfm->aead);
+	kfree(tfm);
 }
 
 static int aead_setauthsize(void *private, unsigned int authsize)
 {
-	return crypto_aead_setauthsize(private, authsize);
+	struct aead_tfm *tfm = private;
+
+	return crypto_aead_setauthsize(tfm->aead, authsize);
 }
 
 static int aead_setkey(void *private, const u8 *key, unsigned int keylen)
 {
-	return crypto_aead_setkey(private, key, keylen);
+	struct aead_tfm *tfm = private;
+	int err;
+
+	err = crypto_aead_setkey(tfm->aead, key, keylen);
+	tfm->has_key = !err;
+
+	return err;
 }
 
 static void aead_sock_destruct(struct sock *sk)
@@ -766,12 +893,14 @@ static void aead_sock_destruct(struct sock *sk)
 	af_alg_release_parent(sk);
 }
 
-static int aead_accept_parent(void *private, struct sock *sk)
+static int aead_accept_parent_nokey(void *private, struct sock *sk)
 {
 	struct aead_ctx *ctx;
 	struct alg_sock *ask = alg_sk(sk);
-	unsigned int len = sizeof(*ctx) + crypto_aead_reqsize(private);
-	unsigned int ivlen = crypto_aead_ivsize(private);
+	struct aead_tfm *tfm = private;
+	struct crypto_aead *aead = tfm->aead;
+	unsigned int len = sizeof(*ctx) + crypto_aead_reqsize(aead);
+	unsigned int ivlen = crypto_aead_ivsize(aead);
 
 	ctx = sock_kmalloc(sk, len, GFP_KERNEL);
 	if (!ctx)
@@ -798,7 +927,7 @@ static int aead_accept_parent(void *private, struct sock *sk)
 
 	ask->private = ctx;
 
-	aead_request_set_tfm(&ctx->aead_req, private);
+	aead_request_set_tfm(&ctx->aead_req, aead);
 	aead_request_set_callback(&ctx->aead_req, CRYPTO_TFM_REQ_MAY_BACKLOG,
 				  af_alg_complete, &ctx->completion);
 
@@ -807,13 +936,25 @@ static int aead_accept_parent(void *private, struct sock *sk)
 	return 0;
 }
 
+static int aead_accept_parent(void *private, struct sock *sk)
+{
+	struct aead_tfm *tfm = private;
+
+	if (!tfm->has_key)
+		return -ENOKEY;
+
+	return aead_accept_parent_nokey(private, sk);
+}
+
 static const struct af_alg_type algif_type_aead = {
 	.bind		=	aead_bind,
 	.release	=	aead_release,
 	.setkey		=	aead_setkey,
 	.setauthsize	=	aead_setauthsize,
 	.accept		=	aead_accept_parent,
+	.accept_nokey	=	aead_accept_parent_nokey,
 	.ops		=	&algif_aead_ops,
+	.ops_nokey	=	&algif_aead_ops_nokey,
 	.name		=	"aead",
 	.owner		=	THIS_MODULE
 };
diff --git a/drivers/Makefile b/drivers/Makefile
index 194d20bee7dc..733bf0b2613f 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -101,6 +101,7 @@ obj-$(CONFIG_USB_PHY)		+= usb/
 obj-$(CONFIG_USB)		+= usb/
 obj-$(CONFIG_PCI)		+= usb/
 obj-$(CONFIG_USB_GADGET)	+= usb/
+obj-$(CONFIG_OF)		+= usb/
 obj-$(CONFIG_SERIO)		+= input/serio/
 obj-$(CONFIG_GAMEPORT)		+= input/gameport/
 obj-$(CONFIG_INPUT)		+= input/
diff --git a/drivers/bluetooth/hci_bcm.c b/drivers/bluetooth/hci_bcm.c
index 8f6c23c20c52..deed58013555 100644
--- a/drivers/bluetooth/hci_bcm.c
+++ b/drivers/bluetooth/hci_bcm.c
@@ -287,6 +287,9 @@ static int bcm_open(struct hci_uart *hu)
 
 	hu->priv = bcm;
 
+	if (!hu->tty->dev)
+		goto out;
+
 	mutex_lock(&bcm_device_lock);
 	list_for_each(p, &bcm_device_list) {
 		struct bcm_device *dev = list_entry(p, struct bcm_device, list);
@@ -307,7 +310,7 @@ static int bcm_open(struct hci_uart *hu)
 	}
 
 	mutex_unlock(&bcm_device_lock);
-
+out:
 	return 0;
 }
 
diff --git a/drivers/bluetooth/hci_intel.c b/drivers/bluetooth/hci_intel.c
index 9e271286c5e5..73306384af6c 100644
--- a/drivers/bluetooth/hci_intel.c
+++ b/drivers/bluetooth/hci_intel.c
@@ -307,6 +307,9 @@ static int intel_set_power(struct hci_uart *hu, bool powered)
 	struct list_head *p;
 	int err = -ENODEV;
 
+	if (!hu->tty->dev)
+		return err;
+
 	mutex_lock(&intel_device_list_lock);
 
 	list_for_each(p, &intel_device_list) {
@@ -379,6 +382,9 @@ static void intel_busy_work(struct work_struct *work)
 	struct intel_data *intel = container_of(work, struct intel_data,
 						busy_work);
 
+	if (!intel->hu->tty->dev)
+		return;
+
 	/* Link is busy, delay the suspend */
 	mutex_lock(&intel_device_list_lock);
 	list_for_each(p, &intel_device_list) {
@@ -889,6 +895,8 @@ static int intel_setup(struct hci_uart *hu)
 	list_for_each(p, &intel_device_list) {
 		struct intel_device *dev = list_entry(p, struct intel_device,
 						      list);
+		if (!hu->tty->dev)
+			break;
 		if (hu->tty->dev->parent == dev->pdev->dev.parent) {
 			if (device_may_wakeup(&dev->pdev->dev)) {
 				set_bit(STATE_LPM_ENABLED, &intel->flags);
@@ -1056,6 +1064,9 @@ static int intel_enqueue(struct hci_uart *hu, struct sk_buff *skb)
 
 	BT_DBG("hu %p skb %p", hu, skb);
 
+	if (!hu->tty->dev)
+		goto out_enqueue;
+
 	/* Be sure our controller is resumed and potential LPM transaction
 	 * completed before enqueuing any packet.
 	 */
@@ -1072,7 +1083,7 @@ static int intel_enqueue(struct hci_uart *hu, struct sk_buff *skb)
 		}
 	}
 	mutex_unlock(&intel_device_list_lock);
-
+out_enqueue:
 	skb_queue_tail(&intel->txq, skb);
 
 	return 0;
diff --git a/drivers/char/ipmi/ipmi_ssif.c b/drivers/char/ipmi/ipmi_ssif.c
index 5673ffff00be..6958b5ce9145 100644
--- a/drivers/char/ipmi/ipmi_ssif.c
+++ b/drivers/char/ipmi/ipmi_ssif.c
@@ -892,6 +892,7 @@ static void msg_written_handler(struct ssif_info *ssif_info, int result,
 		 * for details on the intricacies of this.
 		 */
 		int left;
+		unsigned char *data_to_send;
 
 		ssif_inc_stat(ssif_info, sent_messages_parts);
 
@@ -900,6 +901,7 @@ static void msg_written_handler(struct ssif_info *ssif_info, int result,
 			left = 32;
 		/* Length byte. */
 		ssif_info->multi_data[ssif_info->multi_pos] = left;
+		data_to_send = ssif_info->multi_data + ssif_info->multi_pos;
 		ssif_info->multi_pos += left;
 		if (left < 32)
 			/*
@@ -913,7 +915,7 @@ static void msg_written_handler(struct ssif_info *ssif_info, int result,
 		rv = ssif_i2c_send(ssif_info, msg_written_handler,
 				  I2C_SMBUS_WRITE,
 				  SSIF_IPMI_MULTI_PART_REQUEST_MIDDLE,
-				  ssif_info->multi_data + ssif_info->multi_pos,
+				  data_to_send,
 				  I2C_SMBUS_BLOCK_DATA);
 		if (rv < 0) {
 			/* request failed, just return the error. */
diff --git a/drivers/crypto/ccp/ccp-dev-v3.c b/drivers/crypto/ccp/ccp-dev-v3.c
index 8d2dbacc6161..e68966bbfa58 100644
--- a/drivers/crypto/ccp/ccp-dev-v3.c
+++ b/drivers/crypto/ccp/ccp-dev-v3.c
@@ -315,17 +315,73 @@ static int ccp_perform_ecc(struct ccp_op *op)
 	return ccp_do_cmd(op, cr, ARRAY_SIZE(cr));
 }
 
+static void ccp_disable_queue_interrupts(struct ccp_device *ccp)
+{
+	iowrite32(0x00, ccp->io_regs + IRQ_MASK_REG);
+}
+
+static void ccp_enable_queue_interrupts(struct ccp_device *ccp)
+{
+	iowrite32(ccp->qim, ccp->io_regs + IRQ_MASK_REG);
+}
+
+static void ccp_irq_bh(unsigned long data)
+{
+	struct ccp_device *ccp = (struct ccp_device *)data;
+	struct ccp_cmd_queue *cmd_q;
+	u32 q_int, status;
+	unsigned int i;
+
+	status = ioread32(ccp->io_regs + IRQ_STATUS_REG);
+
+	for (i = 0; i < ccp->cmd_q_count; i++) {
+		cmd_q = &ccp->cmd_q[i];
+
+		q_int = status & (cmd_q->int_ok | cmd_q->int_err);
+		if (q_int) {
+			cmd_q->int_status = status;
+			cmd_q->q_status = ioread32(cmd_q->reg_status);
+			cmd_q->q_int_status = ioread32(cmd_q->reg_int_status);
+
+			/* On error, only save the first error value */
+			if ((q_int & cmd_q->int_err) && !cmd_q->cmd_error)
+				cmd_q->cmd_error = CMD_Q_ERROR(cmd_q->q_status);
+
+			cmd_q->int_rcvd = 1;
+
+			/* Acknowledge the interrupt and wake the kthread */
+			iowrite32(q_int, ccp->io_regs + IRQ_STATUS_REG);
+			wake_up_interruptible(&cmd_q->int_queue);
+		}
+	}
+	ccp_enable_queue_interrupts(ccp);
+}
+
+static irqreturn_t ccp_irq_handler(int irq, void *data)
+{
+	struct device *dev = data;
+	struct ccp_device *ccp = dev_get_drvdata(dev);
+
+	ccp_disable_queue_interrupts(ccp);
+	if (ccp->use_tasklet)
+		tasklet_schedule(&ccp->irq_tasklet);
+	else
+		ccp_irq_bh((unsigned long)ccp);
+
+	return IRQ_HANDLED;
+}
+
 static int ccp_init(struct ccp_device *ccp)
 {
 	struct device *dev = ccp->dev;
 	struct ccp_cmd_queue *cmd_q;
 	struct dma_pool *dma_pool;
 	char dma_pool_name[MAX_DMAPOOL_NAME_LEN];
-	unsigned int qmr, qim, i;
+	unsigned int qmr, i;
 	int ret;
 
 	/* Find available queues */
-	qim = 0;
+	ccp->qim = 0;
 	qmr = ioread32(ccp->io_regs + Q_MASK_REG);
 	for (i = 0; i < MAX_HW_QUEUES; i++) {
 		if (!(qmr & (1 << i)))
@@ -370,7 +426,7 @@ static int ccp_init(struct ccp_device *ccp)
 		init_waitqueue_head(&cmd_q->int_queue);
 
 		/* Build queue interrupt mask (two interrupts per queue) */
-		qim |= cmd_q->int_ok | cmd_q->int_err;
+		ccp->qim |= cmd_q->int_ok | cmd_q->int_err;
 
 #ifdef CONFIG_ARM64
 		/* For arm64 set the recommended queue cache settings */
@@ -388,14 +444,14 @@ static int ccp_init(struct ccp_device *ccp)
 	dev_notice(dev, "%u command queues available\n", ccp->cmd_q_count);
 
 	/* Disable and clear interrupts until ready */
-	iowrite32(0x00, ccp->io_regs + IRQ_MASK_REG);
+	ccp_disable_queue_interrupts(ccp);
 	for (i = 0; i < ccp->cmd_q_count; i++) {
 		cmd_q = &ccp->cmd_q[i];
 
 		ioread32(cmd_q->reg_int_status);
 		ioread32(cmd_q->reg_status);
 	}
-	iowrite32(qim, ccp->io_regs + IRQ_STATUS_REG);
+	iowrite32(ccp->qim, ccp->io_regs + IRQ_STATUS_REG);
 
 	/* Request an irq */
 	ret = ccp->get_irq(ccp);
@@ -408,6 +464,11 @@ static int ccp_init(struct ccp_device *ccp)
 	init_waitqueue_head(&ccp->sb_queue);
 	init_waitqueue_head(&ccp->suspend_queue);
 
+	/* Initialize the ISR tasklet? */
+	if (ccp->use_tasklet)
+		tasklet_init(&ccp->irq_tasklet, ccp_irq_bh,
+			     (unsigned long)ccp);
+
 	dev_dbg(dev, "Starting threads...\n");
 	/* Create a kthread for each queue */
 	for (i = 0; i < ccp->cmd_q_count; i++) {
@@ -430,7 +491,7 @@ static int ccp_init(struct ccp_device *ccp)
 
 	dev_dbg(dev, "Enabling interrupts...\n");
 	/* Enable interrupts */
-	iowrite32(qim, ccp->io_regs + IRQ_MASK_REG);
+	ccp_enable_queue_interrupts(ccp);
 
 	dev_dbg(dev, "Registering device...\n");
 	ccp_add_device(ccp);
@@ -467,7 +528,7 @@ static void ccp_destroy(struct ccp_device *ccp)
 {
 	struct ccp_cmd_queue *cmd_q;
 	struct ccp_cmd *cmd;
-	unsigned int qim, i;
+	unsigned int i;
 
 	/* Unregister the DMA engine */
 	ccp_dmaengine_unregister(ccp);
@@ -478,22 +539,15 @@ static void ccp_destroy(struct ccp_device *ccp)
 	/* Remove this device from the list of available units */
 	ccp_del_device(ccp);
 
-	/* Build queue interrupt mask (two interrupt masks per queue) */
-	qim = 0;
-	for (i = 0; i < ccp->cmd_q_count; i++) {
-		cmd_q = &ccp->cmd_q[i];
-		qim |= cmd_q->int_ok | cmd_q->int_err;
-	}
-
 	/* Disable and clear interrupts */
-	iowrite32(0x00, ccp->io_regs + IRQ_MASK_REG);
+	ccp_disable_queue_interrupts(ccp);
 	for (i = 0; i < ccp->cmd_q_count; i++) {
 		cmd_q = &ccp->cmd_q[i];
 
 		ioread32(cmd_q->reg_int_status);
 		ioread32(cmd_q->reg_status);
 	}
-	iowrite32(qim, ccp->io_regs + IRQ_STATUS_REG);
+	iowrite32(ccp->qim, ccp->io_regs + IRQ_STATUS_REG);
 
 	/* Stop the queue kthreads */
 	for (i = 0; i < ccp->cmd_q_count; i++)
@@ -520,40 +574,6 @@ static void ccp_destroy(struct ccp_device *ccp)
 	}
 }
 
-static irqreturn_t ccp_irq_handler(int irq, void *data)
-{
-	struct device *dev = data;
-	struct ccp_device *ccp = dev_get_drvdata(dev);
-	struct ccp_cmd_queue *cmd_q;
-	u32 q_int, status;
-	unsigned int i;
-
-	status = ioread32(ccp->io_regs + IRQ_STATUS_REG);
-
-	for (i = 0; i < ccp->cmd_q_count; i++) {
-		cmd_q = &ccp->cmd_q[i];
-
-		q_int = status & (cmd_q->int_ok | cmd_q->int_err);
-		if (q_int) {
-			cmd_q->int_status = status;
-			cmd_q->q_status = ioread32(cmd_q->reg_status);
-			cmd_q->q_int_status = ioread32(cmd_q->reg_int_status);
-
-			/* On error, only save the first error value */
-			if ((q_int & cmd_q->int_err) && !cmd_q->cmd_error)
-				cmd_q->cmd_error = CMD_Q_ERROR(cmd_q->q_status);
-
-			cmd_q->int_rcvd = 1;
-
-			/* Acknowledge the interrupt and wake the kthread */
-			iowrite32(q_int, ccp->io_regs + IRQ_STATUS_REG);
-			wake_up_interruptible(&cmd_q->int_queue);
-		}
-	}
-
-	return IRQ_HANDLED;
-}
-
 static const struct ccp_actions ccp3_actions = {
 	.aes = ccp_perform_aes,
 	.xts_aes = ccp_perform_xts_aes,
diff --git a/drivers/crypto/ccp/ccp-dev-v5.c b/drivers/crypto/ccp/ccp-dev-v5.c
index a388bf2d67f4..2c0ce5f605b3 100644
--- a/drivers/crypto/ccp/ccp-dev-v5.c
+++ b/drivers/crypto/ccp/ccp-dev-v5.c
@@ -644,6 +644,65 @@ static int ccp_assign_lsbs(struct ccp_device *ccp)
 	return rc;
 }
 
+static void ccp5_disable_queue_interrupts(struct ccp_device *ccp)
+{
+	unsigned int i;
+
+	for (i = 0; i < ccp->cmd_q_count; i++)
+		iowrite32(0x0, ccp->cmd_q[i].reg_int_enable);
+}
+
+static void ccp5_enable_queue_interrupts(struct ccp_device *ccp)
+{
+	unsigned int i;
+
+	for (i = 0; i < ccp->cmd_q_count; i++)
+		iowrite32(SUPPORTED_INTERRUPTS, ccp->cmd_q[i].reg_int_enable);
+}
+
+static void ccp5_irq_bh(unsigned long data)
+{
+	struct ccp_device *ccp = (struct ccp_device *)data;
+	u32 status;
+	unsigned int i;
+
+	for (i = 0; i < ccp->cmd_q_count; i++) {
+		struct ccp_cmd_queue *cmd_q = &ccp->cmd_q[i];
+
+		status = ioread32(cmd_q->reg_interrupt_status);
+
+		if (status) {
+			cmd_q->int_status = status;
+			cmd_q->q_status = ioread32(cmd_q->reg_status);
+			cmd_q->q_int_status = ioread32(cmd_q->reg_int_status);
+
+			/* On error, only save the first error value */
+			if ((status & INT_ERROR) && !cmd_q->cmd_error)
+				cmd_q->cmd_error = CMD_Q_ERROR(cmd_q->q_status);
+
+			cmd_q->int_rcvd = 1;
+
+			/* Acknowledge the interrupt and wake the kthread */
+			iowrite32(status, cmd_q->reg_interrupt_status);
+			wake_up_interruptible(&cmd_q->int_queue);
+		}
+	}
+	ccp5_enable_queue_interrupts(ccp);
+}
+
+static irqreturn_t ccp5_irq_handler(int irq, void *data)
+{
+	struct device *dev = data;
+	struct ccp_device *ccp = dev_get_drvdata(dev);
+
+	ccp5_disable_queue_interrupts(ccp);
+	if (ccp->use_tasklet)
+		tasklet_schedule(&ccp->irq_tasklet);
+	else
+		ccp5_irq_bh((unsigned long)ccp);
+	return IRQ_HANDLED;
+}
+
 static int ccp5_init(struct ccp_device *ccp)
 {
 	struct device *dev = ccp->dev;
@@ -728,19 +787,18 @@ static int ccp5_init(struct ccp_device *ccp)
 	dev_notice(dev, "%u command queues available\n", ccp->cmd_q_count);
 
 	/* Turn off the queues and disable interrupts until ready */
+	ccp5_disable_queue_interrupts(ccp);
 	for (i = 0; i < ccp->cmd_q_count; i++) {
 		cmd_q = &ccp->cmd_q[i];
 
 		cmd_q->qcontrol = 0; /* Start with nothing */
 		iowrite32(cmd_q->qcontrol, cmd_q->reg_control);
 
-		/* Disable the interrupts */
-		iowrite32(0x00, cmd_q->reg_int_enable);
 		ioread32(cmd_q->reg_int_status);
 		ioread32(cmd_q->reg_status);
 
-		/* Clear the interrupts */
-		iowrite32(ALL_INTERRUPTS, cmd_q->reg_interrupt_status);
+		/* Clear the interrupt status */
+		iowrite32(SUPPORTED_INTERRUPTS, cmd_q->reg_interrupt_status);
 	}
 
 	dev_dbg(dev, "Requesting an IRQ...\n");
@@ -750,6 +808,10 @@ static int ccp5_init(struct ccp_device *ccp)
 		dev_err(dev, "unable to allocate an IRQ\n");
 		goto e_pool;
 	}
+	/* Initialize the ISR tasklet */
+	if (ccp->use_tasklet)
+		tasklet_init(&ccp->irq_tasklet, ccp5_irq_bh,
+			     (unsigned long)ccp);
 
 	/* Initialize the queue used to suspend */
 	init_waitqueue_head(&ccp->suspend_queue);
@@ -821,11 +883,7 @@ static int ccp5_init(struct ccp_device *ccp)
 	}
 
 	dev_dbg(dev, "Enabling interrupts...\n");
-	/* Enable interrupts */
-	for (i = 0; i < ccp->cmd_q_count; i++) {
-		cmd_q = &ccp->cmd_q[i];
-		iowrite32(ALL_INTERRUPTS, cmd_q->reg_int_enable);
-	}
+	ccp5_enable_queue_interrupts(ccp);
 
 	dev_dbg(dev, "Registering device...\n");
 	/* Put this on the unit list to make it available */
@@ -877,17 +935,15 @@ static void ccp5_destroy(struct ccp_device *ccp)
 	ccp_del_device(ccp);
 
 	/* Disable and clear interrupts */
+	ccp5_disable_queue_interrupts(ccp);
 	for (i = 0; i < ccp->cmd_q_count; i++) {
 		cmd_q = &ccp->cmd_q[i];
 
 		/* Turn off the run bit */
 		iowrite32(cmd_q->qcontrol & ~CMD5_Q_RUN, cmd_q->reg_control);
 
-		/* Disable the interrupts */
-		iowrite32(ALL_INTERRUPTS, cmd_q->reg_interrupt_status);
-
 		/* Clear the interrupt status */
-		iowrite32(0x00, cmd_q->reg_int_enable);
+		iowrite32(SUPPORTED_INTERRUPTS, cmd_q->reg_interrupt_status);
 		ioread32(cmd_q->reg_int_status);
 		ioread32(cmd_q->reg_status);
 	}
@@ -920,38 +976,6 @@ static void ccp5_destroy(struct ccp_device *ccp)
 	}
 }
 
-static irqreturn_t ccp5_irq_handler(int irq, void *data)
-{
-	struct device *dev = data;
-	struct ccp_device *ccp = dev_get_drvdata(dev);
-	u32 status;
-	unsigned int i;
-
-	for (i = 0; i < ccp->cmd_q_count; i++) {
-		struct ccp_cmd_queue *cmd_q = &ccp->cmd_q[i];
-
-		status = ioread32(cmd_q->reg_interrupt_status);
-
-		if (status) {
-			cmd_q->int_status = status;
-			cmd_q->q_status = ioread32(cmd_q->reg_status);
-			cmd_q->q_int_status = ioread32(cmd_q->reg_int_status);
-
-			/* On error, only save the first error value */
-			if ((status & INT_ERROR) && !cmd_q->cmd_error)
-				cmd_q->cmd_error = CMD_Q_ERROR(cmd_q->q_status);
-
-			cmd_q->int_rcvd = 1;
-
-			/* Acknowledge the interrupt and wake the kthread */
-			iowrite32(ALL_INTERRUPTS, cmd_q->reg_interrupt_status);
-			wake_up_interruptible(&cmd_q->int_queue);
-		}
-	}
-
-	return IRQ_HANDLED;
-}
-
 static void ccp5_config(struct ccp_device *ccp)
 {
 	/* Public side */
diff --git a/drivers/crypto/ccp/ccp-dev.h b/drivers/crypto/ccp/ccp-dev.h
index 340aef14d616..8ac7ae17e1f4 100644
--- a/drivers/crypto/ccp/ccp-dev.h
+++ b/drivers/crypto/ccp/ccp-dev.h
@@ -109,9 +109,8 @@
 #define INT_COMPLETION			0x1
 #define INT_ERROR			0x2
 #define INT_QUEUE_STOPPED		0x4
-#define ALL_INTERRUPTS			(INT_COMPLETION| \
-					 INT_ERROR| \
-					 INT_QUEUE_STOPPED)
+#define	INT_EMPTY_QUEUE			0x8
+#define SUPPORTED_INTERRUPTS		(INT_COMPLETION | INT_ERROR)
 
 #define LSB_REGION_WIDTH		5
 #define MAX_LSB_CNT			8
@@ -333,7 +332,10 @@ struct ccp_device {
 	void *dev_specific;
 	int (*get_irq)(struct ccp_device *ccp);
 	void (*free_irq)(struct ccp_device *ccp);
+	unsigned int qim;
 	unsigned int irq;
+	bool use_tasklet;
+	struct tasklet_struct irq_tasklet;
 
 	/* I/O area used for device communication. The register mapping
 	 * starts at an offset into the mapped bar.
diff --git a/drivers/crypto/ccp/ccp-pci.c b/drivers/crypto/ccp/ccp-pci.c
index 28a9996c1085..e880d4cf4ada 100644
--- a/drivers/crypto/ccp/ccp-pci.c
+++ b/drivers/crypto/ccp/ccp-pci.c
@@ -69,6 +69,7 @@ static int ccp_get_msix_irqs(struct ccp_device *ccp)
 			goto e_irq;
 		}
 	}
+	ccp->use_tasklet = true;
 
 	return 0;
 
@@ -100,6 +101,7 @@ static int ccp_get_msi_irq(struct ccp_device *ccp)
 		dev_notice(dev, "unable to allocate MSI IRQ (%d)\n", ret);
 		goto e_msi;
 	}
+	ccp->use_tasklet = true;
 
 	return 0;
 
diff --git a/drivers/dax/dax.c b/drivers/dax/dax.c
index 193224889e41..586f9543de73 100644
--- a/drivers/dax/dax.c
+++ b/drivers/dax/dax.c
@@ -553,13 +553,10 @@ static void dax_dev_release(struct device *dev)
 	kfree(dax_dev);
 }
 
-static void unregister_dax_dev(void *dev)
+static void kill_dax_dev(struct dax_dev *dax_dev)
 {
-	struct dax_dev *dax_dev = to_dax_dev(dev);
 	struct cdev *cdev = &dax_dev->cdev;
 
-	dev_dbg(dev, "%s\n", __func__);
-
 	/*
 	 * Note, rcu is not protecting the liveness of dax_dev, rcu is
 	 * ensuring that any fault handlers that might have seen
@@ -571,6 +568,15 @@ static void unregister_dax_dev(void *dev)
 	synchronize_srcu(&dax_srcu);
 	unmap_mapping_range(dax_dev->inode->i_mapping, 0, 0, 1);
 	cdev_del(cdev);
+}
+
+static void unregister_dax_dev(void *dev)
+{
+	struct dax_dev *dax_dev = to_dax_dev(dev);
+
+	dev_dbg(dev, "%s\n", __func__);
+
+	kill_dax_dev(dax_dev);
 	device_unregister(dev);
 }
 
@@ -647,6 +653,7 @@ struct dax_dev *devm_create_dax_dev(struct dax_region *dax_region,
 	dev_set_name(dev, "dax%d.%d", dax_region->id, dax_dev->id);
 	rc = device_add(dev);
 	if (rc) {
+		kill_dax_dev(dax_dev);
 		put_device(dev);
 		return ERR_PTR(rc);
 	}
diff --git a/drivers/infiniband/core/sysfs.c b/drivers/infiniband/core/sysfs.c
index c1fb545e8d78..42de5f22da93 100644
--- a/drivers/infiniband/core/sysfs.c
+++ b/drivers/infiniband/core/sysfs.c
@@ -1301,7 +1301,7 @@ int ib_device_register_sysfs(struct ib_device *device,
 	free_port_list_attributes(device);
 
 err_unregister:
-	device_unregister(class_dev);
+	device_del(class_dev);
 
 err:
 	return ret;
diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
index 83687646da68..0e64b52af5b2 100644
--- a/drivers/infiniband/core/verbs.c
+++ b/drivers/infiniband/core/verbs.c
@@ -1516,7 +1516,9 @@ int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid)
 
 	if (!qp->device->attach_mcast)
 		return -ENOSYS;
-	if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD)
+	if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD ||
+	    lid < be16_to_cpu(IB_MULTICAST_LID_BASE) ||
+	    lid == be16_to_cpu(IB_LID_PERMISSIVE))
 		return -EINVAL;
 
 	ret = qp->device->attach_mcast(qp, gid, lid);
@@ -1532,7 +1534,9 @@ int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid)
 
 	if (!qp->device->detach_mcast)
 		return -ENOSYS;
-	if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD)
+	if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD ||
+	    lid < be16_to_cpu(IB_MULTICAST_LID_BASE) ||
+	    lid == be16_to_cpu(IB_LID_PERMISSIVE))
 		return -EINVAL;
 
 	ret = qp->device->detach_mcast(qp, gid, lid);
diff --git a/drivers/infiniband/hw/hfi1/ruc.c b/drivers/infiniband/hw/hfi1/ruc.c
index a1576aea4756..9f768b48321f 100644
--- a/drivers/infiniband/hw/hfi1/ruc.c
+++ b/drivers/infiniband/hw/hfi1/ruc.c
@@ -1,5 +1,5 @@
 /*
- * Copyright(c) 2015, 2016 Intel Corporation.
+ * Copyright(c) 2015 - 2017 Intel Corporation.
  *
  * This file is provided under a dual BSD/GPLv2 license.  When using or
  * redistributing this file, you may do so under either license.
@@ -833,23 +833,29 @@ void hfi1_make_ruc_header(struct rvt_qp *qp, struct ib_other_headers *ohdr,
 /* when sending, force a reschedule every one of these periods */
 #define SEND_RESCHED_TIMEOUT (5 * HZ)  /* 5s in jiffies */
 
+void hfi1_do_send_from_rvt(struct rvt_qp *qp)
+{
+	hfi1_do_send(qp, false);
+}
+
 void _hfi1_do_send(struct work_struct *work)
 {
 	struct iowait *wait = container_of(work, struct iowait, iowork);
 	struct rvt_qp *qp = iowait_to_qp(wait);
 
-	hfi1_do_send(qp);
+	hfi1_do_send(qp, true);
 }
 
 /**
  * hfi1_do_send - perform a send on a QP
  * @work: contains a pointer to the QP
+ * @in_thread: true if in a workqueue thread
  *
  * Process entries in the send work queue until credit or queue is
  * exhausted.  Only allow one CPU to send a packet per QP.
  * Otherwise, two threads could send packets out of order.
  */
-void hfi1_do_send(struct rvt_qp *qp)
+void hfi1_do_send(struct rvt_qp *qp, bool in_thread)
 {
 	struct hfi1_pkt_state ps;
 	struct hfi1_qp_priv *priv = qp->priv;
@@ -917,8 +923,10 @@ void hfi1_do_send(struct rvt_qp *qp)
 			qp->s_hdrwords = 0;
 			/* allow other tasks to run */
 			if (unlikely(time_after(jiffies, timeout))) {
-				if (workqueue_congested(cpu,
-							ps.ppd->hfi1_wq)) {
+				if (!in_thread ||
+				    workqueue_congested(
+						cpu,
+						ps.ppd->hfi1_wq)) {
 					spin_lock_irqsave(
 						&qp->s_lock,
 						ps.flags);
@@ -931,11 +939,9 @@ void hfi1_do_send(struct rvt_qp *qp)
 						*ps.ppd->dd->send_schedule);
 					return;
 				}
-				if (!irqs_disabled()) {
-					cond_resched();
-					this_cpu_inc(
-					   *ps.ppd->dd->send_schedule);
-				}
+				cond_resched();
+				this_cpu_inc(
+					*ps.ppd->dd->send_schedule);
 				timeout = jiffies + (timeout_int) / 8;
 			}
 			spin_lock_irqsave(&qp->s_lock, ps.flags);
diff --git a/drivers/infiniband/hw/hfi1/verbs.c b/drivers/infiniband/hw/hfi1/verbs.c
index 4b7a16ceb362..01a380efea6b 100644
--- a/drivers/infiniband/hw/hfi1/verbs.c
+++ b/drivers/infiniband/hw/hfi1/verbs.c
@@ -1,5 +1,5 @@
 /*
- * Copyright(c) 2015, 2016 Intel Corporation.
+ * Copyright(c) 2015 - 2017 Intel Corporation.
  *
  * This file is provided under a dual BSD/GPLv2 license.  When using or
  * redistributing this file, you may do so under either license.
@@ -1697,7 +1697,7 @@ int hfi1_register_ib_device(struct hfi1_devdata *dd)
 	dd->verbs_dev.rdi.driver_f.qp_priv_free = qp_priv_free;
 	dd->verbs_dev.rdi.driver_f.free_all_qps = free_all_qps;
 	dd->verbs_dev.rdi.driver_f.notify_qp_reset = notify_qp_reset;
-	dd->verbs_dev.rdi.driver_f.do_send = hfi1_do_send;
+	dd->verbs_dev.rdi.driver_f.do_send = hfi1_do_send_from_rvt;
 	dd->verbs_dev.rdi.driver_f.schedule_send = hfi1_schedule_send;
 	dd->verbs_dev.rdi.driver_f.schedule_send_no_lock = _hfi1_schedule_send;
 	dd->verbs_dev.rdi.driver_f.get_pmtu_from_attr = get_pmtu_from_attr;
diff --git a/drivers/infiniband/hw/hfi1/verbs.h b/drivers/infiniband/hw/hfi1/verbs.h
index 1c3815d89eb7..bac84f820a54 100644
--- a/drivers/infiniband/hw/hfi1/verbs.h
+++ b/drivers/infiniband/hw/hfi1/verbs.h
@@ -1,5 +1,5 @@
 /*
- * Copyright(c) 2015, 2016 Intel Corporation.
+ * Copyright(c) 2015 - 2017 Intel Corporation.
  *
  * This file is provided under a dual BSD/GPLv2 license.  When using or
  * redistributing this file, you may do so under either license.
@@ -372,7 +372,9 @@ void hfi1_make_ruc_header(struct rvt_qp *qp, struct ib_other_headers *ohdr,
 
 void _hfi1_do_send(struct work_struct *work);
 
-void hfi1_do_send(struct rvt_qp *qp);
+void hfi1_do_send_from_rvt(struct rvt_qp *qp);
+
+void hfi1_do_send(struct rvt_qp *qp, bool in_thread);
 
 void hfi1_send_complete(struct rvt_qp *qp, struct rvt_swqe *wqe,
 			enum ib_wc_status status);
diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c
index 46ad99595fd2..f2a885eee4bb 100644
--- a/drivers/infiniband/hw/mlx4/main.c
+++ b/drivers/infiniband/hw/mlx4/main.c
@@ -2926,6 +2926,7 @@ static void *mlx4_ib_add(struct mlx4_dev *dev)
 		mlx4_ib_delete_counters_table(ibdev, &ibdev->counters_table[i]);
 
 err_map:
+	mlx4_ib_free_eqs(dev, ibdev);
 	iounmap(ibdev->uar_map);
 
 err_uar:
diff --git a/drivers/infiniband/hw/mlx4/mcg.c b/drivers/infiniband/hw/mlx4/mcg.c
index a21d37f02f35..e6ea81c9644a 100644
--- a/drivers/infiniband/hw/mlx4/mcg.c
+++ b/drivers/infiniband/hw/mlx4/mcg.c
@@ -1102,7 +1102,8 @@ static void _mlx4_ib_mcg_port_cleanup(struct mlx4_ib_demux_ctx *ctx, int destroy
 	while ((p = rb_first(&ctx->mcg_table)) != NULL) {
 		group = rb_entry(p, struct mcast_group, node);
 		if (atomic_read(&group->refcount))
-			mcg_warn_group(group, "group refcount %d!!! (pointer %p)\n", atomic_read(&group->refcount), group);
+			mcg_debug_group(group, "group refcount %d!!! (pointer %p)\n",
+					atomic_read(&group->refcount), group);
 
 		force_clean_group(group);
 	}
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_fs.c b/drivers/infiniband/ulp/ipoib/ipoib_fs.c
index 6bd5740e2691..09396bd7b02d 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_fs.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_fs.c
@@ -281,8 +281,11 @@ void ipoib_delete_debug_files(struct net_device *dev)
 {
 	struct ipoib_dev_priv *priv = netdev_priv(dev);
 
+	WARN_ONCE(!priv->mcg_dentry, "null mcg debug file\n");
+	WARN_ONCE(!priv->path_dentry, "null path debug file\n");
 	debugfs_remove(priv->mcg_dentry);
 	debugfs_remove(priv->path_dentry);
+	priv->mcg_dentry = priv->path_dentry = NULL;
 }
 
 int ipoib_register_debugfs(void)
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c
index 3ef7b8f049c4..08c4b0287304 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
@@ -108,6 +108,33 @@ static struct ib_client ipoib_client = {
 	.get_net_dev_by_params = ipoib_get_net_dev_by_params,
 };
 
+#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
+static int ipoib_netdev_event(struct notifier_block *this,
+			      unsigned long event, void *ptr)
+{
+	struct netdev_notifier_info *ni = ptr;
+	struct net_device *dev = ni->dev;
+
+	if (dev->netdev_ops->ndo_open != ipoib_open)
+		return NOTIFY_DONE;
+
+	switch (event) {
+	case NETDEV_REGISTER:
+		ipoib_create_debug_files(dev);
+		break;
+	case NETDEV_CHANGENAME:
+		ipoib_delete_debug_files(dev);
+		ipoib_create_debug_files(dev);
+		break;
+	case NETDEV_UNREGISTER:
+		ipoib_delete_debug_files(dev);
+		break;
+	}
+
+	return NOTIFY_DONE;
+}
+#endif
+
 int ipoib_open(struct net_device *dev)
 {
 	struct ipoib_dev_priv *priv = netdev_priv(dev);
@@ -1655,8 +1682,6 @@ void ipoib_dev_cleanup(struct net_device *dev)
 
 	ASSERT_RTNL();
 
-	ipoib_delete_debug_files(dev);
-
 	/* Delete any child interfaces first */
 	list_for_each_entry_safe(cpriv, tcpriv, &priv->child_intfs, list) {
 		/* Stop GC on child */
@@ -2074,8 +2099,6 @@ static struct net_device *ipoib_add_port(const char *format,
 		goto register_failed;
 	}
 
-	ipoib_create_debug_files(priv->dev);
-
 	if (ipoib_cm_add_mode_attr(priv->dev))
 		goto sysfs_failed;
 	if (ipoib_add_pkey_attr(priv->dev))
@@ -2090,7 +2113,6 @@ static struct net_device *ipoib_add_port(const char *format,
 	return priv->dev;
 
 sysfs_failed:
-	ipoib_delete_debug_files(priv->dev);
 	unregister_netdev(priv->dev);
 
 register_failed:
@@ -2175,6 +2197,12 @@ static void ipoib_remove_one(struct ib_device *device, void *client_data)
 	kfree(dev_list);
 }
 
+#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
+static struct notifier_block ipoib_netdev_notifier = {
+	.notifier_call = ipoib_netdev_event,
+};
+#endif
+
 static int __init ipoib_init_module(void)
 {
 	int ret;
@@ -2227,6 +2255,9 @@ static int __init ipoib_init_module(void)
 	if (ret)
 		goto err_client;
 
+#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
+	register_netdevice_notifier(&ipoib_netdev_notifier);
+#endif
 	return 0;
 
 err_client:
@@ -2244,6 +2275,9 @@ static int __init ipoib_init_module(void)
 
 static void __exit ipoib_cleanup_module(void)
 {
+#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
+	unregister_netdevice_notifier(&ipoib_netdev_notifier);
+#endif
 	ipoib_netlink_fini();
 	ib_unregister_client(&ipoib_client);
 	ib_sa_unregister_client(&ipoib_sa_client);
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_vlan.c b/drivers/infiniband/ulp/ipoib/ipoib_vlan.c
index a2f9f29c6ab5..57eadd2b7a71 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_vlan.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_vlan.c
@@ -87,8 +87,6 @@ int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv,
 		goto register_failed;
 	}
 
-	ipoib_create_debug_files(priv->dev);
-
 	/* RTNL childs don't need proprietary sysfs entries */
 	if (type == IPOIB_LEGACY_CHILD) {
 		if (ipoib_cm_add_mode_attr(priv->dev))
@@ -109,7 +107,6 @@ int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv,
 
 sysfs_failed:
 	result = -ENOMEM;
-	ipoib_delete_debug_files(priv->dev);
 	unregister_netdevice(priv->dev);
 
 register_failed:
diff --git a/drivers/md/dm-era-target.c b/drivers/md/dm-era-target.c
index bf2b2676cb8a..80e3df1f1f7d 100644
--- a/drivers/md/dm-era-target.c
+++ b/drivers/md/dm-era-target.c
@@ -961,15 +961,15 @@ static int metadata_commit(struct era_metadata *md)
 		}
 	}
 
-	r = save_sm_root(md);
+	r = dm_tm_pre_commit(md->tm);
 	if (r) {
-		DMERR("%s: save_sm_root failed", __func__);
+		DMERR("%s: pre commit failed", __func__);
 		return r;
 	}
 
-	r = dm_tm_pre_commit(md->tm);
+	r = save_sm_root(md);
 	if (r) {
-		DMERR("%s: pre commit failed", __func__);
+		DMERR("%s: save_sm_root failed", __func__);
 		return r;
 	}
 
diff --git a/drivers/md/dm-rq.c b/drivers/md/dm-rq.c
index 2c965424d383..ba7c4c685db3 100644
--- a/drivers/md/dm-rq.c
+++ b/drivers/md/dm-rq.c
@@ -997,10 +997,14 @@ int dm_mq_init_request_queue(struct mapped_device *md, struct dm_table *t)
 	dm_init_md_queue(md);
 
 	/* backfill 'mq' sysfs registration normally done in blk_register_queue */
-	blk_mq_register_dev(disk_to_dev(md->disk), q);
+	err = blk_mq_register_dev(disk_to_dev(md->disk), q);
+	if (err)
+		goto out_cleanup_queue;
 
 	return 0;
 
+out_cleanup_queue:
+	blk_cleanup_queue(q);
 out_tag_set:
 	blk_mq_free_tag_set(md->tag_set);
 out_kfree_tag_set:
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index d1c05c12a9db..be869a990e38 100644
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -1070,6 +1070,7 @@ static void passdown_endio(struct bio *bio)
 	 * to unmap (we ignore err).
 	 */
 	queue_passdown_pt2(bio->bi_private);
+	bio_put(bio);
 }
 
 static void process_prepared_discard_passdown_pt1(struct dm_thin_new_mapping *m)
diff --git a/drivers/nvdimm/pfn_devs.c b/drivers/nvdimm/pfn_devs.c
index 6c033c9a2f06..78cb3e2359bd 100644
--- a/drivers/nvdimm/pfn_devs.c
+++ b/drivers/nvdimm/pfn_devs.c
@@ -538,7 +538,8 @@ static struct vmem_altmap *__nvdimm_setup_pfn(struct nd_pfn *nd_pfn,
 		nd_pfn->npfns = le64_to_cpu(pfn_sb->npfns);
 		altmap = NULL;
 	} else if (nd_pfn->mode == PFN_MODE_PMEM) {
-		nd_pfn->npfns = (resource_size(res) - offset) / PAGE_SIZE;
+		nd_pfn->npfns = PFN_SECTION_ALIGN_UP((resource_size(res)
+					- offset) / PAGE_SIZE);
 		if (le64_to_cpu(nd_pfn->pfn_sb->npfns) > nd_pfn->npfns)
 			dev_info(&nd_pfn->dev,
 					"number of pfns truncated from %lld to %ld\n",
@@ -625,7 +626,8 @@ static int nd_pfn_init(struct nd_pfn *nd_pfn)
 	 */
 	start += start_pad;
 	size = resource_size(&nsio->res);
-	npfns = (size - start_pad - end_trunc - SZ_8K) / SZ_4K;
+	npfns = PFN_SECTION_ALIGN_UP((size - start_pad - end_trunc - SZ_8K)
+			/ PAGE_SIZE);
 	if (nd_pfn->mode == PFN_MODE_PMEM) {
 		/*
 		 * vmemmap_populate_hugepages() allocates the memmap array in
diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c
index 24618431a14b..b4808590870c 100644
--- a/drivers/nvdimm/pmem.c
+++ b/drivers/nvdimm/pmem.c
@@ -383,12 +383,12 @@ static void nd_pmem_shutdown(struct device *dev)
 
 static void nd_pmem_notify(struct device *dev, enum nvdimm_event event)
 {
-	struct pmem_device *pmem = dev_get_drvdata(dev);
-	struct nd_region *nd_region = to_region(pmem);
+	struct nd_region *nd_region;
 	resource_size_t offset = 0, end_trunc = 0;
 	struct nd_namespace_common *ndns;
 	struct nd_namespace_io *nsio;
 	struct resource res;
+	struct badblocks *bb;
 
 	if (event != NVDIMM_REVALIDATE_POISON)
 		return;
@@ -397,20 +397,33 @@ static void nd_pmem_notify(struct device *dev, enum nvdimm_event event)
 		struct nd_btt *nd_btt = to_nd_btt(dev);
 
 		ndns = nd_btt->ndns;
-	} else if (is_nd_pfn(dev)) {
-		struct nd_pfn *nd_pfn = to_nd_pfn(dev);
-		struct nd_pfn_sb *pfn_sb = nd_pfn->pfn_sb;
+		nd_region = to_nd_region(ndns->dev.parent);
+		nsio = to_nd_namespace_io(&ndns->dev);
+		bb = &nsio->bb;
+	} else {
+		struct pmem_device *pmem = dev_get_drvdata(dev);
 
-		ndns = nd_pfn->ndns;
-		offset = pmem->data_offset + __le32_to_cpu(pfn_sb->start_pad);
-		end_trunc = __le32_to_cpu(pfn_sb->end_trunc);
-	} else
-		ndns = to_ndns(dev);
+		nd_region = to_region(pmem);
+		bb = &pmem->bb;
+
+		if (is_nd_pfn(dev)) {
+			struct nd_pfn *nd_pfn = to_nd_pfn(dev);
+			struct nd_pfn_sb *pfn_sb = nd_pfn->pfn_sb;
+
+			ndns = nd_pfn->ndns;
+			offset = pmem->data_offset +
+					__le32_to_cpu(pfn_sb->start_pad);
+			end_trunc = __le32_to_cpu(pfn_sb->end_trunc);
+		} else {
+			ndns = to_ndns(dev);
+		}
+
+		nsio = to_nd_namespace_io(&ndns->dev);
+	}
 
-	nsio = to_nd_namespace_io(&ndns->dev);
 	res.start = nsio->res.start + offset;
 	res.end = nsio->res.end - end_trunc;
-	nvdimm_badblocks_populate(nd_region, &pmem->bb, &res);
+	nvdimm_badblocks_populate(nd_region, bb, &res);
 }
 
 MODULE_ALIAS("pmem");
diff --git a/drivers/nvdimm/region_devs.c b/drivers/nvdimm/region_devs.c
index 9cf6f1a88fce..f62306246ca4 100644
--- a/drivers/nvdimm/region_devs.c
+++ b/drivers/nvdimm/region_devs.c
@@ -968,17 +968,20 @@ EXPORT_SYMBOL_GPL(nvdimm_flush);
  */
 int nvdimm_has_flush(struct nd_region *nd_region)
 {
-	struct nd_region_data *ndrd = dev_get_drvdata(&nd_region->dev);
 	int i;
 
 	/* no nvdimm == flushing capability unknown */
 	if (nd_region->ndr_mappings == 0)
 		return -ENXIO;
 
-	for (i = 0; i < nd_region->ndr_mappings; i++)
-		/* flush hints present, flushing required */
-		if (ndrd_get_flush_wpq(ndrd, i, 0))
+	for (i = 0; i < nd_region->ndr_mappings; i++) {
+		struct nd_mapping *nd_mapping = &nd_region->mapping[i];
+		struct nvdimm *nvdimm = nd_mapping->nvdimm;
+
+		/* flush hints present / available */
+		if (nvdimm->num_flush)
 			return 1;
+	}
 
 	/*
 	 * The platform defines dimm devices without hints, assume
diff --git a/drivers/staging/comedi/drivers/jr3_pci.c b/drivers/staging/comedi/drivers/jr3_pci.c
index 70390de66e0e..eb0a095efe9c 100644
--- a/drivers/staging/comedi/drivers/jr3_pci.c
+++ b/drivers/staging/comedi/drivers/jr3_pci.c
@@ -611,7 +611,7 @@ static void jr3_pci_poll_dev(unsigned long data)
 		s = &dev->subdevices[i];
 		spriv = s->private;
 
-		if (now > spriv->next_time_min) {
+		if (time_after_eq(now, spriv->next_time_min)) {
 			struct jr3_pci_poll_delay sub_delay;
 
 			sub_delay = jr3_pci_poll_subdevice(s);
@@ -727,11 +727,12 @@ static int jr3_pci_auto_attach(struct comedi_device *dev,
 		s->insn_read	= jr3_pci_ai_insn_read;
 
 		spriv = jr3_pci_alloc_spriv(dev, s);
-		if (spriv) {
-			/* Channel specific range and maxdata */
-			s->range_table_list	= spriv->range_table_list;
-			s->maxdata_list		= spriv->maxdata_list;
-		}
+		if (!spriv)
+			return -ENOMEM;
+
+		/* Channel specific range and maxdata */
+		s->range_table_list	= spriv->range_table_list;
+		s->maxdata_list		= spriv->maxdata_list;
 	}
 
 	/* Reset DSP card */
diff --git a/drivers/staging/gdm724x/gdm_mux.c b/drivers/staging/gdm724x/gdm_mux.c
index 400969170d1c..f03e43b1b5f6 100644
--- a/drivers/staging/gdm724x/gdm_mux.c
+++ b/drivers/staging/gdm724x/gdm_mux.c
@@ -664,9 +664,8 @@ static int __init gdm_usb_mux_init(void)
 
 static void __exit gdm_usb_mux_exit(void)
 {
-	unregister_lte_tty_driver();
-
 	usb_deregister(&gdm_mux_driver);
+	unregister_lte_tty_driver();
 }
 
 module_init(gdm_usb_mux_init);
diff --git a/drivers/staging/vt6656/usbpipe.c b/drivers/staging/vt6656/usbpipe.c
index e9b6b21f7422..f759aa8a342d 100644
--- a/drivers/staging/vt6656/usbpipe.c
+++ b/drivers/staging/vt6656/usbpipe.c
@@ -47,15 +47,25 @@ int vnt_control_out(struct vnt_private *priv, u8 request, u16 value,
 		u16 index, u16 length, u8 *buffer)
 {
 	int status = 0;
+	u8 *usb_buffer;
 
 	if (test_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags))
 		return STATUS_FAILURE;
 
 	mutex_lock(&priv->usb_lock);
 
+	usb_buffer = kmemdup(buffer, length, GFP_KERNEL);
+	if (!usb_buffer) {
+		mutex_unlock(&priv->usb_lock);
+		return -ENOMEM;
+	}
+
 	status = usb_control_msg(priv->usb,
-		usb_sndctrlpipe(priv->usb, 0), request, 0x40, value,
-			index, buffer, length, USB_CTL_WAIT);
+				 usb_sndctrlpipe(priv->usb, 0),
+				 request, 0x40, value,
+				 index, usb_buffer, length, USB_CTL_WAIT);
+
+	kfree(usb_buffer);
 
 	mutex_unlock(&priv->usb_lock);
 
@@ -75,15 +85,28 @@ int vnt_control_in(struct vnt_private *priv, u8 request, u16 value,
 		u16 index, u16 length, u8 *buffer)
 {
 	int status;
+	u8 *usb_buffer;
 
 	if (test_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags))
 		return STATUS_FAILURE;
 
 	mutex_lock(&priv->usb_lock);
 
+	usb_buffer = kmalloc(length, GFP_KERNEL);
+	if (!usb_buffer) {
+		mutex_unlock(&priv->usb_lock);
+		return -ENOMEM;
+	}
+
 	status = usb_control_msg(priv->usb,
-		usb_rcvctrlpipe(priv->usb, 0), request, 0xc0, value,
-			index, buffer, length, USB_CTL_WAIT);
+				 usb_rcvctrlpipe(priv->usb, 0),
+				 request, 0xc0, value,
+				 index, usb_buffer, length, USB_CTL_WAIT);
+
+	if (status == length)
+		memcpy(buffer, usb_buffer, length);
+
+	kfree(usb_buffer);
 
 	mutex_unlock(&priv->usb_lock);
 
diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
index b7d747e92c7a..40e50f2d209d 100644
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -4671,6 +4671,7 @@ int iscsit_release_sessions_for_tpg(struct iscsi_portal_group *tpg, int force)
 			continue;
 		}
 		atomic_set(&sess->session_reinstatement, 1);
+		atomic_set(&sess->session_fall_back_to_erl0, 1);
 		spin_unlock(&sess->conn_lock);
 
 		list_move_tail(&se_sess->sess_list, &free_list);
diff --git a/drivers/target/iscsi/iscsi_target_configfs.c b/drivers/target/iscsi/iscsi_target_configfs.c
index e980e2d0c2db..7e70fe849f0d 100644
--- a/drivers/target/iscsi/iscsi_target_configfs.c
+++ b/drivers/target/iscsi/iscsi_target_configfs.c
@@ -1530,6 +1530,7 @@ static void lio_tpg_close_session(struct se_session *se_sess)
 		return;
 	}
 	atomic_set(&sess->session_reinstatement, 1);
+	atomic_set(&sess->session_fall_back_to_erl0, 1);
 	spin_unlock(&sess->conn_lock);
 
 	iscsit_stop_time2retain_timer(sess);
diff --git a/drivers/target/iscsi/iscsi_target_login.c b/drivers/target/iscsi/iscsi_target_login.c
index 15f79a2ca34a..96c55bc10ac9 100644
--- a/drivers/target/iscsi/iscsi_target_login.c
+++ b/drivers/target/iscsi/iscsi_target_login.c
@@ -204,6 +204,7 @@ int iscsi_check_for_session_reinstatement(struct iscsi_conn *conn)
 			    initiatorname_param->value) &&
 		   (sess_p->sess_ops->SessionType == sessiontype))) {
 			atomic_set(&sess_p->session_reinstatement, 1);
+			atomic_set(&sess_p->session_fall_back_to_erl0, 1);
 			spin_unlock(&sess_p->conn_lock);
 			iscsit_inc_session_usage_count(sess_p);
 			iscsit_stop_time2retain_timer(sess_p);
diff --git a/drivers/target/target_core_file.c b/drivers/target/target_core_file.c
index d545993df18b..29f807b29e74 100644
--- a/drivers/target/target_core_file.c
+++ b/drivers/target/target_core_file.c
@@ -594,8 +594,7 @@ fd_execute_rw(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents,
 	if (ret < 0)
 		return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
 
-	if (ret)
-		target_complete_cmd(cmd, SAM_STAT_GOOD);
+	target_complete_cmd(cmd, SAM_STAT_GOOD);
 	return 0;
 }
 
diff --git a/drivers/target/target_core_sbc.c b/drivers/target/target_core_sbc.c
index a53fb23a0411..b3b1461ec60d 100644
--- a/drivers/target/target_core_sbc.c
+++ b/drivers/target/target_core_sbc.c
@@ -506,8 +506,11 @@ static sense_reason_t compare_and_write_callback(struct se_cmd *cmd, bool succes
 	 * been failed with a non-zero SCSI status.
 	 */
 	if (cmd->scsi_status) {
-		pr_err("compare_and_write_callback: non zero scsi_status:"
+		pr_debug("compare_and_write_callback: non zero scsi_status:"
 			" 0x%02x\n", cmd->scsi_status);
+		*post_ret = 1;
+		if (cmd->scsi_status == SAM_STAT_CHECK_CONDITION)
+			ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
 		goto out;
 	}
 
diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c
index a23fa5ed1d67..2b907385b4a8 100644
--- a/drivers/tty/pty.c
+++ b/drivers/tty/pty.c
@@ -216,16 +216,11 @@ static int pty_signal(struct tty_struct *tty, int sig)
 static void pty_flush_buffer(struct tty_struct *tty)
 {
 	struct tty_struct *to = tty->link;
-	struct tty_ldisc *ld;
 
 	if (!to)
 		return;
 
-	ld = tty_ldisc_ref(to);
-	tty_buffer_flush(to, ld);
-	if (ld)
-		tty_ldisc_deref(ld);
-
+	tty_buffer_flush(to, NULL);
 	if (to->packet) {
 		spin_lock_irq(&tty->ctrl_lock);
 		tty->ctrl_status |= TIOCPKT_FLUSHWRITE;
diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c
index a2a529994ba5..44e5b5bf713b 100644
--- a/drivers/tty/serial/omap-serial.c
+++ b/drivers/tty/serial/omap-serial.c
@@ -1712,7 +1712,8 @@ static int serial_omap_probe(struct platform_device *pdev)
 	return 0;
 
 err_add_port:
-	pm_runtime_put(&pdev->dev);
+	pm_runtime_dont_use_autosuspend(&pdev->dev);
+	pm_runtime_put_sync(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
 	pm_qos_remove_request(&up->pm_qos_request);
 	device_init_wakeup(up->dev, false);
@@ -1725,9 +1726,13 @@ static int serial_omap_remove(struct platform_device *dev)
 {
 	struct uart_omap_port *up = platform_get_drvdata(dev);
 
+	pm_runtime_get_sync(up->dev);
+
+	uart_remove_one_port(&serial_omap_reg, &up->port);
+
+	pm_runtime_dont_use_autosuspend(up->dev);
 	pm_runtime_put_sync(up->dev);
 	pm_runtime_disable(up->dev);
-	uart_remove_one_port(&serial_omap_reg, &up->port);
 	pm_qos_remove_request(&up->pm_qos_request);
 	device_init_wakeup(&dev->dev, false);
 
diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c
index 3e2ef4fd7382..d65f92bcd0f1 100644
--- a/drivers/tty/serial/samsung.c
+++ b/drivers/tty/serial/samsung.c
@@ -906,14 +906,13 @@ static int s3c24xx_serial_request_dma(struct s3c24xx_uart_port *p)
 		return -ENOMEM;
 	}
 
-	dma->rx_addr = dma_map_single(dma->rx_chan->device->dev, dma->rx_buf,
+	dma->rx_addr = dma_map_single(p->port.dev, dma->rx_buf,
 				dma->rx_size, DMA_FROM_DEVICE);
 
 	spin_lock_irqsave(&p->port.lock, flags);
 
 	/* TX buffer */
-	dma->tx_addr = dma_map_single(dma->tx_chan->device->dev,
-				p->port.state->xmit.buf,
+	dma->tx_addr = dma_map_single(p->port.dev, p->port.state->xmit.buf,
 				UART_XMIT_SIZE, DMA_TO_DEVICE);
 
 	spin_unlock_irqrestore(&p->port.lock, flags);
@@ -927,7 +926,7 @@ static void s3c24xx_serial_release_dma(struct s3c24xx_uart_port *p)
 
 	if (dma->rx_chan) {
 		dmaengine_terminate_all(dma->rx_chan);
-		dma_unmap_single(dma->rx_chan->device->dev, dma->rx_addr,
+		dma_unmap_single(p->port.dev, dma->rx_addr,
 				dma->rx_size, DMA_FROM_DEVICE);
 		kfree(dma->rx_buf);
 		dma_release_channel(dma->rx_chan);
@@ -936,7 +935,7 @@ static void s3c24xx_serial_release_dma(struct s3c24xx_uart_port *p)
 
 	if (dma->tx_chan) {
 		dmaengine_terminate_all(dma->tx_chan);
-		dma_unmap_single(dma->tx_chan->device->dev, dma->tx_addr,
+		dma_unmap_single(p->port.dev, dma->tx_addr,
 				UART_XMIT_SIZE, DMA_TO_DEVICE);
 		dma_release_channel(dma->tx_chan);
 		dma->tx_chan = NULL;
diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c
index 0a6369510f2d..0b845e550fbd 100644
--- a/drivers/usb/class/cdc-wdm.c
+++ b/drivers/usb/class/cdc-wdm.c
@@ -58,7 +58,6 @@ MODULE_DEVICE_TABLE (usb, wdm_ids);
 #define WDM_SUSPENDING		8
 #define WDM_RESETTING		9
 #define WDM_OVERFLOW		10
-#define WDM_DRAIN_ON_OPEN	11
 
 #define WDM_MAX			16
 
@@ -182,7 +181,7 @@ static void wdm_in_callback(struct urb *urb)
 				"nonzero urb status received: -ESHUTDOWN\n");
 			goto skip_error;
 		case -EPIPE:
-			dev_dbg(&desc->intf->dev,
+			dev_err(&desc->intf->dev,
 				"nonzero urb status received: -EPIPE\n");
 			break;
 		default:
@@ -210,25 +209,6 @@ static void wdm_in_callback(struct urb *urb)
 			desc->reslength = length;
 		}
 	}
-
-	/*
-	 * Handling devices with the WDM_DRAIN_ON_OPEN flag set:
-	 * If desc->resp_count is unset, then the urb was submitted
-	 * without a prior notification.  If the device returned any
-	 * data, then this implies that it had messages queued without
-	 * notifying us.  Continue reading until that queue is flushed.
-	 */
-	if (!desc->resp_count) {
-		if (!length) {
-			/* do not propagate the expected -EPIPE */
-			desc->rerr = 0;
-			goto unlock;
-		}
-		dev_dbg(&desc->intf->dev, "got %d bytes without notification\n", length);
-		set_bit(WDM_RESPONDING, &desc->flags);
-		usb_submit_urb(desc->response, GFP_ATOMIC);
-	}
-
 skip_error:
 	set_bit(WDM_READ, &desc->flags);
 	wake_up(&desc->wait);
@@ -243,7 +223,6 @@ static void wdm_in_callback(struct urb *urb)
 		service_outstanding_interrupt(desc);
 	}
 
-unlock:
 	spin_unlock(&desc->iuspin);
 }
 
@@ -686,17 +665,6 @@ static int wdm_open(struct inode *inode, struct file *file)
 			dev_err(&desc->intf->dev,
 				"Error submitting int urb - %d\n", rv);
 			rv = usb_translate_errors(rv);
-		} else if (test_bit(WDM_DRAIN_ON_OPEN, &desc->flags)) {
-			/*
-			 * Some devices keep pending messages queued
-			 * without resending notifications.  We must
-			 * flush the message queue before we can
-			 * assume a one-to-one relationship between
-			 * notifications and messages in the queue
-			 */
-			dev_dbg(&desc->intf->dev, "draining queued data\n");
-			set_bit(WDM_RESPONDING, &desc->flags);
-			rv = usb_submit_urb(desc->response, GFP_KERNEL);
 		}
 	} else {
 		rv = 0;
@@ -803,8 +771,7 @@ static void wdm_rxwork(struct work_struct *work)
 /* --- hotplug --- */
 
 static int wdm_create(struct usb_interface *intf, struct usb_endpoint_descriptor *ep,
-		u16 bufsize, int (*manage_power)(struct usb_interface *, int),
-		bool drain_on_open)
+		u16 bufsize, int (*manage_power)(struct usb_interface *, int))
 {
 	int rv = -ENOMEM;
 	struct wdm_device *desc;
@@ -891,68 +858,6 @@ static int wdm_create(struct usb_interface *intf, struct usb_endpoint_descriptor
 
 	desc->manage_power = manage_power;
 
-	/*
-	 * "drain_on_open" enables a hack to work around a firmware
-	 * issue observed on network functions, in particular MBIM
-	 * functions.
-	 *
-	 * Quoting section 7 of the CDC-WMC r1.1 specification:
-	 *
-	 *  "The firmware shall interpret GetEncapsulatedResponse as a
-	 *   request to read response bytes. The firmware shall send
-	 *   the next wLength bytes from the response. The firmware
-	 *   shall allow the host to retrieve data using any number of
-	 *   GetEncapsulatedResponse requests. The firmware shall
-	 *   return a zero- length reply if there are no data bytes
-	 *   available.
-	 *
-	 *   The firmware shall send ResponseAvailable notifications
-	 *   periodically, using any appropriate algorithm, to inform
-	 *   the host that there is data available in the reply
-	 *   buffer. The firmware is allowed to send ResponseAvailable
-	 *   notifications even if there is no data available, but
-	 *   this will obviously reduce overall performance."
-	 *
-	 * These requirements, although they make equally sense, are
-	 * often not implemented by network functions. Some firmwares
-	 * will queue data indefinitely, without ever resending a
-	 * notification. The result is that the driver and firmware
-	 * loses "syncronization" if the driver ever fails to respond
-	 * to a single notification, something which easily can happen
-	 * on release(). When this happens, the driver will appear to
-	 * never receive notifications for the most current data. Each
-	 * notification will only cause a single read, which returns
-	 * the oldest data in the firmware's queue.
-	 *
-	 * The "drain_on_open" hack resolves the situation by draining
-	 * data from the firmware until none is returned, without a
-	 * prior notification.
-	 *
-	 * This will inevitably race with the firmware, risking that
-	 * we read data from the device before handling the associated
-	 * notification. To make things worse, some of the devices
-	 * needing the hack do not implement the "return zero if no
-	 * data is available" requirement either. Instead they return
-	 * an error on the subsequent read in this case.  This means
-	 * that "winning" the race can cause an unexpected EIO to
-	 * userspace.
-	 *
-	 * "winning" the race is more likely on resume() than on
-	 * open(), and the unexpected error is more harmful in the
-	 * middle of an open session. The hack is therefore only
-	 * applied on open(), and not on resume() where it logically
-	 * would be equally necessary. So we define open() as the only
-	 * driver <-> device "syncronization point".  Should we happen
-	 * to lose a notification after open(), then syncronization
-	 * will be lost until release()
-	 *
-	 * The hack should not be enabled for CDC WDM devices
-	 * conforming to the CDC-WMC r1.1 specification.  This is
-	 * ensured by setting drain_on_open to false in wdm_probe().
-	 */
-	if (drain_on_open)
-		set_bit(WDM_DRAIN_ON_OPEN, &desc->flags);
-
 	spin_lock(&wdm_device_list_lock);
 	list_add(&desc->device_list, &wdm_device_list);
 	spin_unlock(&wdm_device_list_lock);
@@ -1006,7 +911,7 @@ static int wdm_probe(struct usb_interface *intf, const struct usb_device_id *id)
 		goto err;
 	ep = &iface->endpoint[0].desc;
 
-	rv = wdm_create(intf, ep, maxcom, &wdm_manage_power, false);
+	rv = wdm_create(intf, ep, maxcom, &wdm_manage_power);
 
 err:
 	return rv;
@@ -1038,7 +943,7 @@ struct usb_driver *usb_cdc_wdm_register(struct usb_interface *intf,
 {
 	int rv = -EINVAL;
 
-	rv = wdm_create(intf, ep, bufsize, manage_power, true);
+	rv = wdm_create(intf, ep, bufsize, manage_power);
 	if (rv < 0)
 		goto err;
 
diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
index dadd1e8dfe09..0bb380a9fcf7 100644
--- a/drivers/usb/core/driver.c
+++ b/drivers/usb/core/driver.c
@@ -1328,6 +1328,24 @@ static int usb_suspend_both(struct usb_device *udev, pm_message_t msg)
 		 */
 		if (udev->parent && !PMSG_IS_AUTO(msg))
 			status = 0;
+
+		/*
+		 * If the device is inaccessible, don't try to resume
+		 * suspended interfaces and just return the error.
+		 */
+		if (status && status != -EBUSY) {
+			int err;
+			u16 devstat;
+
+			err = usb_get_status(udev, USB_RECIP_DEVICE, 0,
+					     &devstat);
+			if (err) {
+				dev_err(&udev->dev,
+					"Failed to suspend device, error %d\n",
+					status);
+				goto done;
+			}
+		}
 	}
 
 	/* If the suspend failed, resume interfaces that did get suspended */
@@ -1760,6 +1778,9 @@ static int autosuspend_check(struct usb_device *udev)
 	int			w, i;
 	struct usb_interface	*intf;
 
+	if (udev->state == USB_STATE_NOTATTACHED)
+		return -ENODEV;
+
 	/* Fail if autosuspend is disabled, or any interfaces are in use, or
 	 * any interface drivers require remote wakeup but it isn't available.
 	 */
diff --git a/drivers/usb/core/file.c b/drivers/usb/core/file.c
index 822ced9639aa..422ce7b20d73 100644
--- a/drivers/usb/core/file.c
+++ b/drivers/usb/core/file.c
@@ -27,6 +27,7 @@
 #define MAX_USB_MINORS	256
 static const struct file_operations *usb_minors[MAX_USB_MINORS];
 static DECLARE_RWSEM(minor_rwsem);
+static DEFINE_MUTEX(init_usb_class_mutex);
 
 static int usb_open(struct inode *inode, struct file *file)
 {
@@ -109,8 +110,9 @@ static void release_usb_class(struct kref *kref)
 
 static void destroy_usb_class(void)
 {
-	if (usb_class)
-		kref_put(&usb_class->kref, release_usb_class);
+	mutex_lock(&init_usb_class_mutex);
+	kref_put(&usb_class->kref, release_usb_class);
+	mutex_unlock(&init_usb_class_mutex);
 }
 
 int usb_major_init(void)
@@ -171,7 +173,10 @@ int usb_register_dev(struct usb_interface *intf,
 	if (intf->minor >= 0)
 		return -EADDRINUSE;
 
+	mutex_lock(&init_usb_class_mutex);
 	retval = init_usb_class();
+	mutex_unlock(&init_usb_class_mutex);
+
 	if (retval)
 		return retval;
 
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 35fb2bef0e45..579900640faa 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -1064,6 +1064,9 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type)
 
 		portstatus = portchange = 0;
 		status = hub_port_status(hub, port1, &portstatus, &portchange);
+		if (status)
+			goto abort;
+
 		if (udev || (portstatus & USB_PORT_STAT_CONNECTION))
 			dev_dbg(&port_dev->dev, "status %04x change %04x\n",
 					portstatus, portchange);
@@ -1196,7 +1199,7 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type)
 
 	/* Scan all ports that need attention */
 	kick_hub_wq(hub);
-
+ abort:
 	if (type == HUB_INIT2 || type == HUB_INIT3) {
 		/* Allow autosuspend if it was suppressed */
  disconnected:
@@ -2082,6 +2085,12 @@ void usb_disconnect(struct usb_device **pdev)
 	dev_info(&udev->dev, "USB disconnect, device number %d\n",
 			udev->devnum);
 
+	/*
+	 * Ensure that the pm runtime code knows that the USB device
+	 * is in the process of being disconnected.
+	 */
+	pm_runtime_barrier(&udev->dev);
+
 	usb_lock_device(udev);
 
 	hub_disconnect_children(udev);
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index 8ad203296079..f3ee80ece682 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -460,6 +460,7 @@ config USB_CONFIGFS_F_TCM
 choice
 	tristate "USB Gadget Drivers"
 	default USB_ETH
+	optional
 	help
 	  A Linux "Gadget Driver" talks to the USB Peripheral Controller
 	  driver through the abstract "gadget" API.  Some other operating
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index 7064892ff4a6..709b52841c87 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -1494,6 +1494,17 @@ int xhci_endpoint_init(struct xhci_hcd *xhci,
 	 */
 	max_esit_payload = xhci_get_max_esit_payload(udev, ep);
 	interval = xhci_get_endpoint_interval(udev, ep);
+
+	/* Periodic endpoint bInterval limit quirk */
+	if (usb_endpoint_xfer_int(&ep->desc) ||
+	    usb_endpoint_xfer_isoc(&ep->desc)) {
+		if ((xhci->quirks & XHCI_LIMIT_ENDPOINT_INTERVAL_7) &&
+		    udev->speed >= USB_SPEED_HIGH &&
+		    interval >= 7) {
+			interval = 6;
+		}
+	}
+
 	mult = xhci_get_endpoint_mult(udev, ep);
 	max_packet = GET_MAX_PACKET(usb_endpoint_maxp(&ep->desc));
 	max_burst = xhci_get_endpoint_max_burst(udev, ep);
@@ -2475,7 +2486,7 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags)
 		(xhci->cmd_ring->first_seg->dma & (u64) ~CMD_RING_RSVD_BITS) |
 		xhci->cmd_ring->cycle_state;
 	xhci_dbg_trace(xhci, trace_xhci_dbg_init,
-			"// Setting command ring address to 0x%x", val);
+			"// Setting command ring address to 0x%016llx", val_64);
 	xhci_write_64(xhci, val_64, &xhci->op_regs->cmd_ring);
 	xhci_dbg_cmd_ptrs(xhci);
 
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index 954abfd5014d..93f566cb968b 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -199,6 +199,9 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
 			pdev->device == 0x1042)
 		xhci->quirks |= XHCI_BROKEN_STREAMS;
 
+	if (pdev->vendor == PCI_VENDOR_ID_TI && pdev->device == 0x8241)
+		xhci->quirks |= XHCI_LIMIT_ENDPOINT_INTERVAL_7;
+
 	if (xhci->quirks & XHCI_RESET_ON_RESUME)
 		xhci_dbg_trace(xhci, trace_xhci_dbg_quirks,
 				"QUIRK: Resetting on resume");
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index f97b009ffc40..328fe06752ec 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1659,6 +1659,7 @@ struct xhci_hcd {
 #define XHCI_MISSING_CAS	(1 << 24)
 /* For controller with a broken Port Disable implementation */
 #define XHCI_BROKEN_PORT_PED	(1 << 25)
+#define XHCI_LIMIT_ENDPOINT_INTERVAL_7	(1 << 26)
 
 	unsigned int		num_active_eps;
 	unsigned int		limit_active_eps;
diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c
index 5c8210dc6fd9..d94927e5623b 100644
--- a/drivers/usb/misc/usbtest.c
+++ b/drivers/usb/misc/usbtest.c
@@ -159,6 +159,7 @@ get_endpoints(struct usbtest_dev *dev, struct usb_interface *intf)
 			case USB_ENDPOINT_XFER_INT:
 				if (dev->info->intr)
 					goto try_intr;
+				continue;
 			case USB_ENDPOINT_XFER_ISOC:
 				if (dev->info->iso)
 					goto try_iso;
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index d8d13eede6d9..1dc75db16cbd 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -873,6 +873,7 @@ static const struct usb_device_id id_table_combined[] = {
 	{ USB_DEVICE_AND_INTERFACE_INFO(MICROCHIP_VID, MICROCHIP_USB_BOARD_PID,
 					USB_CLASS_VENDOR_SPEC,
 					USB_SUBCLASS_VENDOR_SPEC, 0x00) },
+	{ USB_DEVICE_INTERFACE_NUMBER(ACTEL_VID, MICROSEMI_ARROW_SF2PLUS_BOARD_PID, 2) },
 	{ USB_DEVICE(JETI_VID, JETI_SPC1201_PID) },
 	{ USB_DEVICE(MARVELL_VID, MARVELL_SHEEVAPLUG_PID),
 		.driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
diff --git a/drivers/usb/serial/ftdi_sio_ids.h b/drivers/usb/serial/ftdi_sio_ids.h
index 48ee04c94a75..71fb9e59db71 100644
--- a/drivers/usb/serial/ftdi_sio_ids.h
+++ b/drivers/usb/serial/ftdi_sio_ids.h
@@ -873,6 +873,12 @@
 #define	FIC_VID			0x1457
 #define	FIC_NEO1973_DEBUG_PID	0x5118
 
+/*
+ * Actel / Microsemi
+ */
+#define ACTEL_VID				0x1514
+#define MICROSEMI_ARROW_SF2PLUS_BOARD_PID	0x2008
+
 /* Olimex */
 #define OLIMEX_VID			0x15BA
 #define OLIMEX_ARM_USB_OCD_PID		0x0003
diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c
index 2ba19424e4a1..1d48e62f4f52 100644
--- a/drivers/vfio/vfio_iommu_type1.c
+++ b/drivers/vfio/vfio_iommu_type1.c
@@ -130,57 +130,36 @@ static void vfio_unlink_dma(struct vfio_iommu *iommu, struct vfio_dma *old)
 	rb_erase(&old->node, &iommu->dma_list);
 }
 
-struct vwork {
-	struct mm_struct	*mm;
-	long			npage;
-	struct work_struct	work;
-};
-
-/* delayed decrement/increment for locked_vm */
-static void vfio_lock_acct_bg(struct work_struct *work)
+static int vfio_lock_acct(long npage, bool *lock_cap)
 {
-	struct vwork *vwork = container_of(work, struct vwork, work);
-	struct mm_struct *mm;
-
-	mm = vwork->mm;
-	down_write(&mm->mmap_sem);
-	mm->locked_vm += vwork->npage;
-	up_write(&mm->mmap_sem);
-	mmput(mm);
-	kfree(vwork);
-}
+	int ret;
 
-static void vfio_lock_acct(long npage)
-{
-	struct vwork *vwork;
-	struct mm_struct *mm;
+	if (!npage)
+		return 0;
 
-	if (!current->mm || !npage)
-		return; /* process exited or nothing to do */
+	if (!current->mm)
+		return -ESRCH; /* process exited */
+
+	ret = down_write_killable(&current->mm->mmap_sem);
+	if (!ret) {
+		if (npage > 0) {
+			if (lock_cap ? !*lock_cap : !capable(CAP_IPC_LOCK)) {
+				unsigned long limit;
+
+				limit = rlimit(RLIMIT_MEMLOCK) >> PAGE_SHIFT;
+
+				if (current->mm->locked_vm + npage > limit)
+					ret = -ENOMEM;
+			}
+		}
+
+		if (!ret)
+			current->mm->locked_vm += npage;
 
-	if (down_write_trylock(&current->mm->mmap_sem)) {
-		current->mm->locked_vm += npage;
 		up_write(&current->mm->mmap_sem);
-		return;
 	}
 
-	/*
-	 * Couldn't get mmap_sem lock, so must setup to update
-	 * mm->locked_vm later. If locked_vm were atomic, we
-	 * wouldn't need this silliness
-	 */
-	vwork = kmalloc(sizeof(struct vwork), GFP_KERNEL);
-	if (!vwork)
-		return;
-	mm = get_task_mm(current);
-	if (!mm) {
-		kfree(vwork);
-		return;
-	}
-	INIT_WORK(&vwork->work, vfio_lock_acct_bg);
-	vwork->mm = mm;
-	vwork->npage = npage;
-	schedule_work(&vwork->work);
+	return ret;
 }
 
 /*
@@ -262,9 +241,9 @@ static int vaddr_get_pfn(unsigned long vaddr, int prot, unsigned long *pfn)
 static long vfio_pin_pages(unsigned long vaddr, long npage,
 			   int prot, unsigned long *pfn_base)
 {
-	unsigned long limit = rlimit(RLIMIT_MEMLOCK) >> PAGE_SHIFT;
+	unsigned long pfn = 0, limit = rlimit(RLIMIT_MEMLOCK) >> PAGE_SHIFT;
 	bool lock_cap = capable(CAP_IPC_LOCK);
-	long ret, i;
+	long ret, i = 1;
 	bool rsvd;
 
 	if (!current->mm)
@@ -283,16 +262,11 @@ static long vfio_pin_pages(unsigned long vaddr, long npage,
 		return -ENOMEM;
 	}
 
-	if (unlikely(disable_hugepages)) {
-		if (!rsvd)
-			vfio_lock_acct(1);
-		return 1;
-	}
+	if (unlikely(disable_hugepages))
+		goto out;
 
 	/* Lock all the consecutive pages from pfn_base */
-	for (i = 1, vaddr += PAGE_SIZE; i < npage; i++, vaddr += PAGE_SIZE) {
-		unsigned long pfn = 0;
-
+	for (vaddr += PAGE_SIZE; i < npage; i++, vaddr += PAGE_SIZE) {
 		ret = vaddr_get_pfn(vaddr, prot, &pfn);
 		if (ret)
 			break;
@@ -308,12 +282,24 @@ static long vfio_pin_pages(unsigned long vaddr, long npage,
 			put_pfn(pfn, prot);
 			pr_warn("%s: RLIMIT_MEMLOCK (%ld) exceeded\n",
 				__func__, limit << PAGE_SHIFT);
-			break;
+			ret = -ENOMEM;
+			goto unpin_out;
 		}
 	}
 
+out:
 	if (!rsvd)
-		vfio_lock_acct(i);
+		ret = vfio_lock_acct(i, &lock_cap);
+
+unpin_out:
+	if (ret) {
+		if (!rsvd) {
+			for (pfn = *pfn_base ; i ; pfn++, i--)
+				put_pfn(pfn, prot);
+		}
+
+		return ret;
+	}
 
 	return i;
 }
@@ -328,7 +314,7 @@ static long vfio_unpin_pages(unsigned long pfn, long npage,
 		unlocked += put_pfn(pfn++, prot);
 
 	if (do_accounting)
-		vfio_lock_acct(-unlocked);
+		vfio_lock_acct(-unlocked, NULL);
 
 	return unlocked;
 }
@@ -390,7 +376,7 @@ static void vfio_unmap_unpin(struct vfio_iommu *iommu, struct vfio_dma *dma)
 		cond_resched();
 	}
 
-	vfio_lock_acct(-unlocked);
+	vfio_lock_acct(-unlocked, NULL);
 }
 
 static void vfio_remove_dma(struct vfio_iommu *iommu, struct vfio_dma *dma)
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 9ad527ff9974..2924bddb4a94 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -102,12 +102,11 @@ void invalidate_bdev(struct block_device *bdev)
 {
 	struct address_space *mapping = bdev->bd_inode->i_mapping;
 
-	if (mapping->nrpages == 0)
-		return;
-
-	invalidate_bh_lrus();
-	lru_add_drain_all();	/* make sure all lru add caches are flushed */
-	invalidate_mapping_pages(mapping, 0, -1);
+	if (mapping->nrpages) {
+		invalidate_bh_lrus();
+		lru_add_drain_all();	/* make sure all lru add caches are flushed */
+		invalidate_mapping_pages(mapping, 0, -1);
+	}
 	/* 99% of the time, we don't need to flush the cleancache on the bdev.
 	 * But, for the strange corners, lets be cautious
 	 */
diff --git a/fs/ceph/xattr.c b/fs/ceph/xattr.c
index febc28f9e2c2..75267cdd5dfd 100644
--- a/fs/ceph/xattr.c
+++ b/fs/ceph/xattr.c
@@ -392,6 +392,7 @@ static int __set_xattr(struct ceph_inode_info *ci,
 
 	if (update_xattr) {
 		int err = 0;
+
 		if (xattr && (flags & XATTR_CREATE))
 			err = -EEXIST;
 		else if (!xattr && (flags & XATTR_REPLACE))
@@ -399,12 +400,14 @@ static int __set_xattr(struct ceph_inode_info *ci,
 		if (err) {
 			kfree(name);
 			kfree(val);
+			kfree(*newxattr);
 			return err;
 		}
 		if (update_xattr < 0) {
 			if (xattr)
 				__remove_xattr(ci, xattr);
 			kfree(name);
+			kfree(*newxattr);
 			return 0;
 		}
 	}
diff --git a/fs/cifs/cifs_unicode.c b/fs/cifs/cifs_unicode.c
index 02b071bf3732..a0b3e7d1be48 100644
--- a/fs/cifs/cifs_unicode.c
+++ b/fs/cifs/cifs_unicode.c
@@ -83,6 +83,9 @@ convert_sfm_char(const __u16 src_char, char *target)
 	case SFM_COLON:
 		*target = ':';
 		break;
+	case SFM_DOUBLEQUOTE:
+		*target = '"';
+		break;
 	case SFM_ASTERISK:
 		*target = '*';
 		break;
@@ -418,6 +421,9 @@ static __le16 convert_to_sfm_char(char src_char, bool end_of_string)
 	case ':':
 		dest_char = cpu_to_le16(SFM_COLON);
 		break;
+	case '"':
+		dest_char = cpu_to_le16(SFM_DOUBLEQUOTE);
+		break;
 	case '*':
 		dest_char = cpu_to_le16(SFM_ASTERISK);
 		break;
diff --git a/fs/cifs/cifs_unicode.h b/fs/cifs/cifs_unicode.h
index 479bc0a941f3..07ade707fa60 100644
--- a/fs/cifs/cifs_unicode.h
+++ b/fs/cifs/cifs_unicode.h
@@ -57,6 +57,7 @@
  * not conflict (although almost does) with the mapping above.
  */
 
+#define SFM_DOUBLEQUOTE ((__u16) 0xF020)
 #define SFM_ASTERISK    ((__u16) 0xF021)
 #define SFM_QUESTION    ((__u16) 0xF025)
 #define SFM_COLON       ((__u16) 0xF022)
@@ -64,8 +65,8 @@
 #define SFM_LESSTHAN    ((__u16) 0xF023)
 #define SFM_PIPE        ((__u16) 0xF027)
 #define SFM_SLASH       ((__u16) 0xF026)
-#define SFM_PERIOD	((__u16) 0xF028)
-#define SFM_SPACE	((__u16) 0xF029)
+#define SFM_SPACE	((__u16) 0xF028)
+#define SFM_PERIOD	((__u16) 0xF029)
 
 /*
  * Mapping mechanism to use when one of the seven reserved characters is
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 15261ba464c5..c0c253005b76 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -87,6 +87,7 @@ extern mempool_t *cifs_req_poolp;
 extern mempool_t *cifs_mid_poolp;
 
 struct workqueue_struct	*cifsiod_wq;
+struct workqueue_struct	*cifsoplockd_wq;
 __u32 cifs_lock_secret;
 
 /*
@@ -1283,9 +1284,16 @@ init_cifs(void)
 		goto out_clean_proc;
 	}
 
+	cifsoplockd_wq = alloc_workqueue("cifsoplockd",
+					 WQ_FREEZABLE|WQ_MEM_RECLAIM, 0);
+	if (!cifsoplockd_wq) {
+		rc = -ENOMEM;
+		goto out_destroy_cifsiod_wq;
+	}
+
 	rc = cifs_fscache_register();
 	if (rc)
-		goto out_destroy_wq;
+		goto out_destroy_cifsoplockd_wq;
 
 	rc = cifs_init_inodecache();
 	if (rc)
@@ -1333,7 +1341,9 @@ init_cifs(void)
 	cifs_destroy_inodecache();
 out_unreg_fscache:
 	cifs_fscache_unregister();
-out_destroy_wq:
+out_destroy_cifsoplockd_wq:
+	destroy_workqueue(cifsoplockd_wq);
+out_destroy_cifsiod_wq:
 	destroy_workqueue(cifsiod_wq);
 out_clean_proc:
 	cifs_proc_clean();
@@ -1356,6 +1366,7 @@ exit_cifs(void)
 	cifs_destroy_mids();
 	cifs_destroy_inodecache();
 	cifs_fscache_unregister();
+	destroy_workqueue(cifsoplockd_wq);
 	destroy_workqueue(cifsiod_wq);
 	cifs_proc_clean();
 }
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index b3830f7ab260..48ef401c3c61 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -1651,6 +1651,7 @@ void cifs_oplock_break(struct work_struct *work);
 
 extern const struct slow_work_ops cifs_oplock_break_ops;
 extern struct workqueue_struct *cifsiod_wq;
+extern struct workqueue_struct *cifsoplockd_wq;
 extern __u32 cifs_lock_secret;
 
 extern mempool_t *cifs_mid_poolp;
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 586fdac05ec2..1f91c9dadd5b 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -717,6 +717,9 @@ CIFSSMBEcho(struct TCP_Server_Info *server)
 	if (rc)
 		return rc;
 
+	if (server->capabilities & CAP_UNICODE)
+		smb->hdr.Flags2 |= SMBFLG2_UNICODE;
+
 	/* set up echo request */
 	smb->hdr.Tid = 0xffff;
 	smb->hdr.WordCount = 1;
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index b8015de88e8c..1a545695f547 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -2839,16 +2839,14 @@ match_prepath(struct super_block *sb, struct cifs_mnt_data *mnt_data)
 {
 	struct cifs_sb_info *old = CIFS_SB(sb);
 	struct cifs_sb_info *new = mnt_data->cifs_sb;
+	bool old_set = old->mnt_cifs_flags & CIFS_MOUNT_USE_PREFIX_PATH;
+	bool new_set = new->mnt_cifs_flags & CIFS_MOUNT_USE_PREFIX_PATH;
 
-	if (old->mnt_cifs_flags & CIFS_MOUNT_USE_PREFIX_PATH) {
-		if (!(new->mnt_cifs_flags & CIFS_MOUNT_USE_PREFIX_PATH))
-			return 0;
-		/* The prepath should be null terminated strings */
-		if (strcmp(new->prepath, old->prepath))
-			return 0;
-
+	if (old_set && new_set && !strcmp(new->prepath, old->prepath))
 		return 1;
-	}
+	else if (!old_set && !new_set)
+		return 1;
+
 	return 0;
 }
 
diff --git a/fs/cifs/ioctl.c b/fs/cifs/ioctl.c
index 001528781b6b..bdba9e7a9438 100644
--- a/fs/cifs/ioctl.c
+++ b/fs/cifs/ioctl.c
@@ -264,10 +264,14 @@ long cifs_ioctl(struct file *filep, unsigned int command, unsigned long arg)
 				rc = -EOPNOTSUPP;
 			break;
 		case CIFS_IOC_GET_MNT_INFO:
+			if (pSMBFile == NULL)
+				break;
 			tcon = tlink_tcon(pSMBFile->tlink);
 			rc = smb_mnt_get_fsinfo(xid, tcon, (void __user *)arg);
 			break;
 		case CIFS_ENUMERATE_SNAPSHOTS:
+			if (pSMBFile == NULL)
+				break;
 			if (arg == 0) {
 				rc = -EINVAL;
 				goto cifs_ioc_exit;
diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c
index c6729156f9a0..5419afea0a36 100644
--- a/fs/cifs/misc.c
+++ b/fs/cifs/misc.c
@@ -492,7 +492,7 @@ is_valid_oplock_break(char *buffer, struct TCP_Server_Info *srv)
 					   CIFS_INODE_DOWNGRADE_OPLOCK_TO_L2,
 					   &pCifsInode->flags);
 
-				queue_work(cifsiod_wq,
+				queue_work(cifsoplockd_wq,
 					   &netfile->oplock_break);
 				netfile->oplock_break_cancelled = false;
 
diff --git a/fs/cifs/smb2misc.c b/fs/cifs/smb2misc.c
index 97307808ae42..967dfe656ced 100644
--- a/fs/cifs/smb2misc.c
+++ b/fs/cifs/smb2misc.c
@@ -494,7 +494,7 @@ smb2_tcon_has_lease(struct cifs_tcon *tcon, struct smb2_lease_break *rsp,
 		else
 			cfile->oplock_break_cancelled = true;
 
-		queue_work(cifsiod_wq, &cfile->oplock_break);
+		queue_work(cifsoplockd_wq, &cfile->oplock_break);
 		kfree(lw);
 		return true;
 	}
@@ -638,7 +638,8 @@ smb2_is_valid_oplock_break(char *buffer, struct TCP_Server_Info *server)
 					   CIFS_INODE_DOWNGRADE_OPLOCK_TO_L2,
 					   &cinode->flags);
 				spin_unlock(&cfile->file_info_lock);
-				queue_work(cifsiod_wq, &cfile->oplock_break);
+				queue_work(cifsoplockd_wq,
+					   &cfile->oplock_break);
 
 				spin_unlock(&tcon->open_file_lock);
 				spin_unlock(&cifs_tcp_ses_lock);
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index 007abf7195af..36334fe3266c 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -924,6 +924,7 @@ smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
 		}
 		if (snapshot_in.snapshot_array_size < sizeof(struct smb_snapshot_array)) {
 			rc = -ERANGE;
+			kfree(retbuf);
 			return rc;
 		}
 
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index 802185386851..7c1c6c39d582 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -569,8 +569,12 @@ int smb3_validate_negotiate(const unsigned int xid, struct cifs_tcon *tcon)
 	}
 
 	if (rsplen != sizeof(struct validate_negotiate_info_rsp)) {
-		cifs_dbg(VFS, "invalid size of protocol negotiate response\n");
-		return -EIO;
+		cifs_dbg(VFS, "invalid protocol negotiate response size: %d\n",
+			 rsplen);
+
+		/* relax check since Mac returns max bufsize allowed on ioctl */
+		if (rsplen > CIFSMaxBufSize)
+			return -EIO;
 	}
 
 	/* check validate negotiate info response matches what we got earlier */
@@ -1670,8 +1674,12 @@ SMB2_ioctl(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid,
 	 * than one credit. Windows typically sets this smaller, but for some
 	 * ioctls it may be useful to allow server to send more. No point
 	 * limiting what the server can send as long as fits in one credit
+	 * Unfortunately - we can not handle more than CIFS_MAX_MSG_SIZE
+	 * (by default, note that it can be overridden to make max larger)
+	 * in responses (except for read responses which can be bigger.
+	 * We may want to bump this limit up
 	 */
-	req->MaxOutputResponse = cpu_to_le32(0xFF00); /* < 64K uses 1 credit */
+	req->MaxOutputResponse = cpu_to_le32(CIFSMaxBufSize);
 
 	if (is_fsctl)
 		req->Flags = cpu_to_le32(SMB2_0_IOCTL_IS_FSCTL);
diff --git a/fs/crypto/policy.c b/fs/crypto/policy.c
index abc18847b98d..bb4e209bd809 100644
--- a/fs/crypto/policy.c
+++ b/fs/crypto/policy.c
@@ -161,27 +161,61 @@ int fscrypt_get_policy(struct inode *inode, struct fscrypt_policy *policy)
 }
 EXPORT_SYMBOL(fscrypt_get_policy);
 
+/**
+ * fscrypt_has_permitted_context() - is a file's encryption policy permitted
+ *				     within its directory?
+ *
+ * @parent: inode for parent directory
+ * @child: inode for file being looked up, opened, or linked into @parent
+ *
+ * Filesystems must call this before permitting access to an inode in a
+ * situation where the parent directory is encrypted (either before allowing
+ * ->lookup() to succeed, or for a regular file before allowing it to be opened)
+ * and before any operation that involves linking an inode into an encrypted
+ * directory, including link, rename, and cross rename.  It enforces the
+ * constraint that within a given encrypted directory tree, all files use the
+ * same encryption policy.  The pre-access check is needed to detect potentially
+ * malicious offline violations of this constraint, while the link and rename
+ * checks are needed to prevent online violations of this constraint.
+ *
+ * Return: 1 if permitted, 0 if forbidden.  If forbidden, the caller must fail
+ * the filesystem operation with EPERM.
+ */
 int fscrypt_has_permitted_context(struct inode *parent, struct inode *child)
 {
-	struct fscrypt_info *parent_ci, *child_ci;
+	const struct fscrypt_operations *cops = parent->i_sb->s_cop;
+	const struct fscrypt_info *parent_ci, *child_ci;
+	struct fscrypt_context parent_ctx, child_ctx;
 	int res;
 
-	if ((parent == NULL) || (child == NULL)) {
-		printk(KERN_ERR	"parent %p child %p\n", parent, child);
-		BUG_ON(1);
-	}
-
 	/* No restrictions on file types which are never encrypted */
 	if (!S_ISREG(child->i_mode) && !S_ISDIR(child->i_mode) &&
 	    !S_ISLNK(child->i_mode))
 		return 1;
 
-	/* no restrictions if the parent directory is not encrypted */
-	if (!parent->i_sb->s_cop->is_encrypted(parent))
+	/* No restrictions if the parent directory is unencrypted */
+	if (!cops->is_encrypted(parent))
 		return 1;
-	/* if the child directory is not encrypted, this is always a problem */
-	if (!parent->i_sb->s_cop->is_encrypted(child))
+
+	/* Encrypted directories must not contain unencrypted files */
+	if (!cops->is_encrypted(child))
 		return 0;
+
+	/*
+	 * Both parent and child are encrypted, so verify they use the same
+	 * encryption policy.  Compare the fscrypt_info structs if the keys are
+	 * available, otherwise retrieve and compare the fscrypt_contexts.
+	 *
+	 * Note that the fscrypt_context retrieval will be required frequently
+	 * when accessing an encrypted directory tree without the key.
+	 * Performance-wise this is not a big deal because we already don't
+	 * really optimize for file access without the key (to the extent that
+	 * such access is even possible), given that any attempted access
+	 * already causes a fscrypt_context retrieval and keyring search.
+	 *
+	 * In any case, if an unexpected error occurs, fall back to "forbidden".
+	 */
+
 	res = fscrypt_get_encryption_info(parent);
 	if (res)
 		return 0;
@@ -190,17 +224,32 @@ int fscrypt_has_permitted_context(struct inode *parent, struct inode *child)
 		return 0;
 	parent_ci = parent->i_crypt_info;
 	child_ci = child->i_crypt_info;
-	if (!parent_ci && !child_ci)
-		return 1;
-	if (!parent_ci || !child_ci)
+
+	if (parent_ci && child_ci) {
+		return memcmp(parent_ci->ci_master_key, child_ci->ci_master_key,
+			      FS_KEY_DESCRIPTOR_SIZE) == 0 &&
+			(parent_ci->ci_data_mode == child_ci->ci_data_mode) &&
+			(parent_ci->ci_filename_mode ==
+			 child_ci->ci_filename_mode) &&
+			(parent_ci->ci_flags == child_ci->ci_flags);
+	}
+
+	res = cops->get_context(parent, &parent_ctx, sizeof(parent_ctx));
+	if (res != sizeof(parent_ctx))
 		return 0;
 
-	return (memcmp(parent_ci->ci_master_key,
-			child_ci->ci_master_key,
-			FS_KEY_DESCRIPTOR_SIZE) == 0 &&
-		(parent_ci->ci_data_mode == child_ci->ci_data_mode) &&
-		(parent_ci->ci_filename_mode == child_ci->ci_filename_mode) &&
-		(parent_ci->ci_flags == child_ci->ci_flags));
+	res = cops->get_context(child, &child_ctx, sizeof(child_ctx));
+	if (res != sizeof(child_ctx))
+		return 0;
+
+	return memcmp(parent_ctx.master_key_descriptor,
+		      child_ctx.master_key_descriptor,
+		      FS_KEY_DESCRIPTOR_SIZE) == 0 &&
+		(parent_ctx.contents_encryption_mode ==
+		 child_ctx.contents_encryption_mode) &&
+		(parent_ctx.filenames_encryption_mode ==
+		 child_ctx.filenames_encryption_mode) &&
+		(parent_ctx.flags == child_ctx.flags);
 }
 EXPORT_SYMBOL(fscrypt_has_permitted_context);
 
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index c78fce404654..01329688fb9e 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -5686,6 +5686,11 @@ int ext4_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
 	file_update_time(vma->vm_file);
 
 	down_read(&EXT4_I(inode)->i_mmap_sem);
+
+	ret = ext4_convert_inline_data(inode);
+	if (ret)
+		goto out_ret;
+
 	/* Delalloc case is easy... */
 	if (test_opt(inode->i_sb, DELALLOC) &&
 	    !ext4_should_journal_data(inode) &&
diff --git a/fs/orangefs/inode.c b/fs/orangefs/inode.c
index ef3b4eb54cf2..08ecdeebd6f7 100644
--- a/fs/orangefs/inode.c
+++ b/fs/orangefs/inode.c
@@ -223,8 +223,7 @@ int orangefs_setattr(struct dentry *dentry, struct iattr *iattr)
 	if (ret)
 		goto out;
 
-	if ((iattr->ia_valid & ATTR_SIZE) &&
-	    iattr->ia_size != i_size_read(inode)) {
+	if (iattr->ia_valid & ATTR_SIZE) {
 		ret = orangefs_setattr_size(inode, iattr);
 		if (ret)
 			goto out;
diff --git a/fs/orangefs/namei.c b/fs/orangefs/namei.c
index a290ff6ec756..7c315938e9c2 100644
--- a/fs/orangefs/namei.c
+++ b/fs/orangefs/namei.c
@@ -193,8 +193,6 @@ static struct dentry *orangefs_lookup(struct inode *dir, struct dentry *dentry,
 		goto out;
 	}
 
-	ORANGEFS_I(inode)->getattr_time = jiffies - 1;
-
 	gossip_debug(GOSSIP_NAME_DEBUG,
 		     "%s:%s:%d "
 		     "Found good inode [%lu] with count [%d]\n",
diff --git a/fs/orangefs/xattr.c b/fs/orangefs/xattr.c
index 74a81b1daaac..237c9c04dc3b 100644
--- a/fs/orangefs/xattr.c
+++ b/fs/orangefs/xattr.c
@@ -76,11 +76,8 @@ ssize_t orangefs_inode_getxattr(struct inode *inode, const char *name,
 	if (S_ISLNK(inode->i_mode))
 		return -EOPNOTSUPP;
 
-	if (strlen(name) >= ORANGEFS_MAX_XATTR_NAMELEN) {
-		gossip_err("Invalid key length (%d)\n",
-			   (int)strlen(name));
+	if (strlen(name) > ORANGEFS_MAX_XATTR_NAMELEN)
 		return -EINVAL;
-	}
 
 	fsuid = from_kuid(&init_user_ns, current_fsuid());
 	fsgid = from_kgid(&init_user_ns, current_fsgid());
@@ -172,6 +169,9 @@ static int orangefs_inode_removexattr(struct inode *inode, const char *name,
 	struct orangefs_kernel_op_s *new_op = NULL;
 	int ret = -ENOMEM;
 
+	if (strlen(name) > ORANGEFS_MAX_XATTR_NAMELEN)
+		return -EINVAL;
+
 	down_write(&orangefs_inode->xattr_sem);
 	new_op = op_alloc(ORANGEFS_VFS_OP_REMOVEXATTR);
 	if (!new_op)
@@ -231,23 +231,13 @@ int orangefs_inode_setxattr(struct inode *inode, const char *name,
 		     "%s: name %s, buffer_size %zd\n",
 		     __func__, name, size);
 
-	if (size >= ORANGEFS_MAX_XATTR_VALUELEN ||
-	    flags < 0) {
-		gossip_err("orangefs_inode_setxattr: bogus values of size(%d), flags(%d)\n",
-			   (int)size,
-			   flags);
+	if (size > ORANGEFS_MAX_XATTR_VALUELEN)
+		return -EINVAL;
+	if (strlen(name) > ORANGEFS_MAX_XATTR_NAMELEN)
 		return -EINVAL;
-	}
 
 	internal_flag = convert_to_internal_xattr_flags(flags);
 
-	if (strlen(name) >= ORANGEFS_MAX_XATTR_NAMELEN) {
-		gossip_err
-		    ("orangefs_inode_setxattr: bogus key size (%d)\n",
-		     (int)(strlen(name)));
-		return -EINVAL;
-	}
-
 	/* This is equivalent to a removexattr */
 	if (size == 0 && value == NULL) {
 		gossip_debug(GOSSIP_XATTR_DEBUG,
@@ -358,7 +348,7 @@ ssize_t orangefs_listxattr(struct dentry *dentry, char *buffer, size_t size)
 
 	returned_count = new_op->downcall.resp.listxattr.returned_count;
 	if (returned_count < 0 ||
-	    returned_count >= ORANGEFS_MAX_XATTR_LISTLEN) {
+	    returned_count > ORANGEFS_MAX_XATTR_LISTLEN) {
 		gossip_err("%s: impossible value for returned_count:%d:\n",
 		__func__,
 		returned_count);
diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c
index 14984d902a99..43033a3d66d5 100644
--- a/fs/pstore/platform.c
+++ b/fs/pstore/platform.c
@@ -704,6 +704,7 @@ int pstore_register(struct pstore_info *psi)
 	if (psi->flags & PSTORE_FLAGS_PMSG)
 		pstore_register_pmsg();
 
+	/* Start watching for new records, if desired. */
 	if (pstore_update_ms >= 0) {
 		pstore_timer.expires = jiffies +
 			msecs_to_jiffies(pstore_update_ms);
@@ -726,6 +727,11 @@ EXPORT_SYMBOL_GPL(pstore_register);
 
 void pstore_unregister(struct pstore_info *psi)
 {
+	/* Stop timer and make sure all work has finished. */
+	pstore_update_ms = -1;
+	del_timer_sync(&pstore_timer);
+	flush_work(&pstore_work);
+
 	if (psi->flags & PSTORE_FLAGS_PMSG)
 		pstore_unregister_pmsg();
 	if (psi->flags & PSTORE_FLAGS_FTRACE)
@@ -825,7 +831,9 @@ static void pstore_timefunc(unsigned long dummy)
 		schedule_work(&pstore_work);
 	}
 
-	mod_timer(&pstore_timer, jiffies + msecs_to_jiffies(pstore_update_ms));
+	if (pstore_update_ms >= 0)
+		mod_timer(&pstore_timer,
+			  jiffies + msecs_to_jiffies(pstore_update_ms));
 }
 
 module_param(backend, charp, 0444);
diff --git a/fs/xattr.c b/fs/xattr.c
index 2d13b4e62fae..ed8c374570ed 100644
--- a/fs/xattr.c
+++ b/fs/xattr.c
@@ -530,7 +530,7 @@ getxattr(struct dentry *d, const char __user *name, void __user *value,
 			size = XATTR_SIZE_MAX;
 		kvalue = kzalloc(size, GFP_KERNEL | __GFP_NOWARN);
 		if (!kvalue) {
-			kvalue = vmalloc(size);
+			kvalue = vzalloc(size);
 			if (!kvalue)
 				return -ENOMEM;
 		}
diff --git a/kernel/padata.c b/kernel/padata.c
index b4a3c0ae649b..e4a8f8d9b31a 100644
--- a/kernel/padata.c
+++ b/kernel/padata.c
@@ -358,7 +358,7 @@ static int padata_setup_cpumasks(struct parallel_data *pd,
 
 	cpumask_and(pd->cpumask.pcpu, pcpumask, cpu_online_mask);
 	if (!alloc_cpumask_var(&pd->cpumask.cbcpu, GFP_KERNEL)) {
-		free_cpumask_var(pd->cpumask.cbcpu);
+		free_cpumask_var(pd->cpumask.pcpu);
 		return -ENOMEM;
 	}
 
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index e5b159b88e39..5b06fb385dd7 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -3125,6 +3125,7 @@ __alloc_pages_direct_compact(gfp_t gfp_mask, unsigned int order,
 		enum compact_priority prio, enum compact_result *compact_result)
 {
 	struct page *page;
+	unsigned int noreclaim_flag = current->flags & PF_MEMALLOC;
 
 	if (!order)
 		return NULL;
@@ -3132,7 +3133,7 @@ __alloc_pages_direct_compact(gfp_t gfp_mask, unsigned int order,
 	current->flags |= PF_MEMALLOC;
 	*compact_result = try_to_compact_pages(gfp_mask, order, alloc_flags, ac,
 									prio);
-	current->flags &= ~PF_MEMALLOC;
+	current->flags = (current->flags & ~PF_MEMALLOC) | noreclaim_flag;
 
 	if (*compact_result <= COMPACT_INACTIVE)
 		return NULL;
diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c
index 48f9471e7c85..c88a6007e643 100644
--- a/net/bluetooth/hci_sock.c
+++ b/net/bluetooth/hci_sock.c
@@ -1680,7 +1680,8 @@ static int hci_sock_sendmsg(struct socket *sock, struct msghdr *msg,
 	if (msg->msg_flags & MSG_OOB)
 		return -EOPNOTSUPP;
 
-	if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_NOSIGNAL|MSG_ERRQUEUE))
+	if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_NOSIGNAL|MSG_ERRQUEUE|
+			       MSG_CMSG_COMPAT))
 		return -EINVAL;
 
 	if (len < 4 || len > HCI_MAX_FRAME_SIZE)
diff --git a/net/core/datagram.c b/net/core/datagram.c
index 963732e775df..58dfa23d12ca 100644
--- a/net/core/datagram.c
+++ b/net/core/datagram.c
@@ -740,7 +740,7 @@ int skb_copy_and_csum_datagram_msg(struct sk_buff *skb,
 
 	if (msg_data_left(msg) < chunk) {
 		if (__skb_checksum_complete(skb))
-			goto csum_error;
+			return -EINVAL;
 		if (skb_copy_datagram_msg(skb, hlen, msg, chunk))
 			goto fault;
 	} else {
@@ -748,15 +748,16 @@ int skb_copy_and_csum_datagram_msg(struct sk_buff *skb,
 		if (skb_copy_and_csum_datagram(skb, hlen, &msg->msg_iter,
 					       chunk, &csum))
 			goto fault;
-		if (csum_fold(csum))
-			goto csum_error;
+
+		if (csum_fold(csum)) {
+			iov_iter_revert(&msg->msg_iter, chunk);
+			return -EINVAL;
+		}
+
 		if (unlikely(skb->ip_summed == CHECKSUM_COMPLETE))
 			netdev_rx_csum_fault(skb->dev);
 	}
 	return 0;
-csum_error:
-	iov_iter_revert(&msg->msg_iter, chunk);
-	return -EINVAL;
 fault:
 	return -EFAULT;
 }
diff --git a/tools/perf/util/auxtrace.c b/tools/perf/util/auxtrace.c
index c5a6e0b12452..78bd632f144d 100644
--- a/tools/perf/util/auxtrace.c
+++ b/tools/perf/util/auxtrace.c
@@ -1826,7 +1826,7 @@ static int addr_filter__resolve_kernel_syms(struct addr_filter *filt)
 		filt->addr = start;
 		if (filt->range && !filt->size && !filt->sym_to) {
 			filt->size = size;
-			no_size = !!size;
+			no_size = !size;
 		}
 	}
 
@@ -1840,7 +1840,7 @@ static int addr_filter__resolve_kernel_syms(struct addr_filter *filt)
 		if (err)
 			return err;
 		filt->size = start + size - filt->addr;
-		no_size = !!size;
+		no_size = !size;
 	}
 
 	/* The very last symbol in kallsyms does not imply a particular size */
diff --git a/tools/testing/selftests/x86/ldt_gdt.c b/tools/testing/selftests/x86/ldt_gdt.c
index 4af47079cf04..e717fed80219 100644
--- a/tools/testing/selftests/x86/ldt_gdt.c
+++ b/tools/testing/selftests/x86/ldt_gdt.c
@@ -403,6 +403,51 @@ static void *threadproc(void *ctx)
 	}
 }
 
+#ifdef __i386__
+
+#ifndef SA_RESTORE
+#define SA_RESTORER 0x04000000
+#endif
+
+/*
+ * The UAPI header calls this 'struct sigaction', which conflicts with
+ * glibc.  Sigh.
+ */
+struct fake_ksigaction {
+	void *handler;  /* the real type is nasty */
+	unsigned long sa_flags;
+	void (*sa_restorer)(void);
+	unsigned char sigset[8];
+};
+
+static void fix_sa_restorer(int sig)
+{
+	struct fake_ksigaction ksa;
+
+	if (syscall(SYS_rt_sigaction, sig, NULL, &ksa, 8) == 0) {
+		/*
+		 * glibc has a nasty bug: it sometimes writes garbage to
+		 * sa_restorer.  This interacts quite badly with anything
+		 * that fiddles with SS because it can trigger legacy
+		 * stack switching.  Patch it up.  See:
+		 *
+		 * https://sourceware.org/bugzilla/show_bug.cgi?id=21269
+		 */
+		if (!(ksa.sa_flags & SA_RESTORER) && ksa.sa_restorer) {
+			ksa.sa_restorer = NULL;
+			if (syscall(SYS_rt_sigaction, sig, &ksa, NULL,
+				    sizeof(ksa.sigset)) != 0)
+				err(1, "rt_sigaction");
+		}
+	}
+}
+#else
+static void fix_sa_restorer(int sig)
+{
+	/* 64-bit glibc works fine. */
+}
+#endif
+
 static void sethandler(int sig, void (*handler)(int, siginfo_t *, void *),
 		       int flags)
 {
@@ -414,6 +459,7 @@ static void sethandler(int sig, void (*handler)(int, siginfo_t *, void *),
 	if (sigaction(sig, &sa, 0))
 		err(1, "sigaction");
 
+	fix_sa_restorer(sig);
 }
 
 static jmp_buf jmpbuf;