diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 7d8b17ce8804..94fa46d2d805 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -2680,7 +2680,11 @@
 			nosmt=force: Force disable SMT, cannot be undone
 				     via the sysfs control file.
 
-	nospectre_v2	[X86] Disable all mitigations for the Spectre variant 2
+	nospectre_v1	[PPC] Disable mitigations for Spectre Variant 1 (bounds
+			check bypass). With this option data leaks are possible
+			in the system.
+
+	nospectre_v2	[X86,PPC_FSL_BOOK3E] Disable all mitigations for the Spectre variant 2
 			(indirect branch prediction) vulnerability. System may
 			allow data leaks with this option, which is equivalent
 			to spectre_v2=off.
diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index a054b5ad410a..828fcd6711b3 100644
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -402,6 +402,7 @@ tcp_min_rtt_wlen - INTEGER
 	minimum RTT when it is moved to a longer path (e.g., due to traffic
 	engineering). A longer window makes the filter more resistant to RTT
 	inflations such as transient congestion. The unit is seconds.
+	Possible values: 0 - 86400 (1 day)
 	Default: 300
 
 tcp_moderate_rcvbuf - BOOLEAN
diff --git a/Makefile b/Makefile
index 47a9f9883bdd..b27ffc1814e8 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 VERSION = 4
 PATCHLEVEL = 14
-SUBLEVEL = 114
+SUBLEVEL = 115
 EXTRAVERSION =
 NAME = Petit Gorille
 
diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S
index 5f687ba1eaa7..8ca539bdac35 100644
--- a/arch/arm/boot/compressed/head.S
+++ b/arch/arm/boot/compressed/head.S
@@ -1393,7 +1393,21 @@ ENTRY(efi_stub_entry)
 
 		@ Preserve return value of efi_entry() in r4
 		mov	r4, r0
-		bl	cache_clean_flush
+
+		@ our cache maintenance code relies on CP15 barrier instructions
+		@ but since we arrived here with the MMU and caches configured
+		@ by UEFI, we must check that the CP15BEN bit is set in SCTLR.
+		@ Note that this bit is RAO/WI on v6 and earlier, so the ISB in
+		@ the enable path will be executed on v7+ only.
+		mrc	p15, 0, r1, c1, c0, 0	@ read SCTLR
+		tst	r1, #(1 << 5)		@ CP15BEN bit set?
+		bne	0f
+		orr	r1, r1, #(1 << 5)	@ CP15 barrier instructions
+		mcr	p15, 0, r1, c1, c0, 0	@ write SCTLR
+ ARM(		.inst	0xf57ff06f		@ v7+ isb	)
+ THUMB(		isb						)
+
+0:		bl	cache_clean_flush
 		bl	cache_off
 
 		@ Set parameters for booting zImage according to boot protocol
diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S
index 9ebe3e2403b1..c6b2e484d6c1 100644
--- a/arch/mips/kernel/scall64-o32.S
+++ b/arch/mips/kernel/scall64-o32.S
@@ -125,7 +125,7 @@ trace_a_syscall:
 	subu	t1, v0,  __NR_O32_Linux
 	move	a1, v0
 	bnez	t1, 1f /* __NR_syscall at offset 0 */
-	lw	a1, PT_R4(sp) /* Arg1 for __NR_syscall case */
+	ld	a1, PT_R4(sp) /* Arg1 for __NR_syscall case */
 	.set	pop
 
 1:	jal	syscall_trace_enter
diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index c5290aecdf06..eb1f8f249dc3 100644
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@@ -242,6 +242,15 @@ KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
 # Avoid indirect branches in kernel to deal with Spectre
 ifdef CONFIG_RETPOLINE
   KBUILD_CFLAGS += $(RETPOLINE_CFLAGS)
+  # Additionally, avoid generating expensive indirect jumps which
+  # are subject to retpolines for small number of switch cases.
+  # clang turns off jump table generation by default when under
+  # retpoline builds, however, gcc does not for x86. This has
+  # only been fixed starting from gcc stable version 8.4.0 and
+  # onwards, but not for older ones. See gcc bug #86952.
+  ifndef CONFIG_CC_IS_CLANG
+    KBUILD_CFLAGS += $(call cc-option,-fno-jump-tables)
+  endif
 endif
 
 archscripts: scripts_basic
diff --git a/drivers/android/binder_alloc.c b/drivers/android/binder_alloc.c
index b9281f2725a6..e0b0399ff7ec 100644
--- a/drivers/android/binder_alloc.c
+++ b/drivers/android/binder_alloc.c
@@ -945,14 +945,13 @@ enum lru_status binder_alloc_free_page(struct list_head *item,
 
 	index = page - alloc->pages;
 	page_addr = (uintptr_t)alloc->buffer + index * PAGE_SIZE;
+
+	mm = alloc->vma_vm_mm;
+	if (!mmget_not_zero(mm))
+		goto err_mmget;
+	if (!down_write_trylock(&mm->mmap_sem))
+		goto err_down_write_mmap_sem_failed;
 	vma = binder_alloc_get_vma(alloc);
-	if (vma) {
-		if (!mmget_not_zero(alloc->vma_vm_mm))
-			goto err_mmget;
-		mm = alloc->vma_vm_mm;
-		if (!down_write_trylock(&mm->mmap_sem))
-			goto err_down_write_mmap_sem_failed;
-	}
 
 	list_lru_isolate(lru, item);
 	spin_unlock(lock);
@@ -965,10 +964,9 @@ enum lru_status binder_alloc_free_page(struct list_head *item,
 			       PAGE_SIZE);
 
 		trace_binder_unmap_user_end(alloc, index);
-
-		up_write(&mm->mmap_sem);
-		mmput(mm);
 	}
+	up_write(&mm->mmap_sem);
+	mmput(mm);
 
 	trace_binder_unmap_kernel_start(alloc, index);
 
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 24a3fb35614f..bd447de4a5b8 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -82,7 +82,6 @@
 
 static DEFINE_IDR(loop_index_idr);
 static DEFINE_MUTEX(loop_index_mutex);
-static DEFINE_MUTEX(loop_ctl_mutex);
 
 static int max_part;
 static int part_shift;
@@ -1019,7 +1018,7 @@ static int loop_clr_fd(struct loop_device *lo)
 	 */
 	if (atomic_read(&lo->lo_refcnt) > 1) {
 		lo->lo_flags |= LO_FLAGS_AUTOCLEAR;
-		mutex_unlock(&loop_ctl_mutex);
+		mutex_unlock(&lo->lo_ctl_mutex);
 		return 0;
 	}
 
@@ -1071,12 +1070,12 @@ static int loop_clr_fd(struct loop_device *lo)
 	if (!part_shift)
 		lo->lo_disk->flags |= GENHD_FL_NO_PART_SCAN;
 	loop_unprepare_queue(lo);
-	mutex_unlock(&loop_ctl_mutex);
+	mutex_unlock(&lo->lo_ctl_mutex);
 	/*
-	 * Need not hold loop_ctl_mutex to fput backing file.
-	 * Calling fput holding loop_ctl_mutex triggers a circular
+	 * Need not hold lo_ctl_mutex to fput backing file.
+	 * Calling fput holding lo_ctl_mutex triggers a circular
 	 * lock dependency possibility warning as fput can take
-	 * bd_mutex which is usually taken before loop_ctl_mutex.
+	 * bd_mutex which is usually taken before lo_ctl_mutex.
 	 */
 	fput(filp);
 	return 0;
@@ -1195,7 +1194,7 @@ loop_get_status(struct loop_device *lo, struct loop_info64 *info)
 	int ret;
 
 	if (lo->lo_state != Lo_bound) {
-		mutex_unlock(&loop_ctl_mutex);
+		mutex_unlock(&lo->lo_ctl_mutex);
 		return -ENXIO;
 	}
 
@@ -1214,10 +1213,10 @@ loop_get_status(struct loop_device *lo, struct loop_info64 *info)
 		       lo->lo_encrypt_key_size);
 	}
 
-	/* Drop loop_ctl_mutex while we call into the filesystem. */
+	/* Drop lo_ctl_mutex while we call into the filesystem. */
 	path = lo->lo_backing_file->f_path;
 	path_get(&path);
-	mutex_unlock(&loop_ctl_mutex);
+	mutex_unlock(&lo->lo_ctl_mutex);
 	ret = vfs_getattr(&path, &stat, STATX_INO, AT_STATX_SYNC_AS_STAT);
 	if (!ret) {
 		info->lo_device = huge_encode_dev(stat.dev);
@@ -1309,7 +1308,7 @@ loop_get_status_old(struct loop_device *lo, struct loop_info __user *arg) {
 	int err;
 
 	if (!arg) {
-		mutex_unlock(&loop_ctl_mutex);
+		mutex_unlock(&lo->lo_ctl_mutex);
 		return -EINVAL;
 	}
 	err = loop_get_status(lo, &info64);
@@ -1327,7 +1326,7 @@ loop_get_status64(struct loop_device *lo, struct loop_info64 __user *arg) {
 	int err;
 
 	if (!arg) {
-		mutex_unlock(&loop_ctl_mutex);
+		mutex_unlock(&lo->lo_ctl_mutex);
 		return -EINVAL;
 	}
 	err = loop_get_status(lo, &info64);
@@ -1402,7 +1401,7 @@ static int lo_ioctl(struct block_device *bdev, fmode_t mode,
 	struct loop_device *lo = bdev->bd_disk->private_data;
 	int err;
 
-	mutex_lock_nested(&loop_ctl_mutex, 1);
+	mutex_lock_nested(&lo->lo_ctl_mutex, 1);
 	switch (cmd) {
 	case LOOP_SET_FD:
 		err = loop_set_fd(lo, mode, bdev, arg);
@@ -1411,7 +1410,7 @@ static int lo_ioctl(struct block_device *bdev, fmode_t mode,
 		err = loop_change_fd(lo, bdev, arg);
 		break;
 	case LOOP_CLR_FD:
-		/* loop_clr_fd would have unlocked loop_ctl_mutex on success */
+		/* loop_clr_fd would have unlocked lo_ctl_mutex on success */
 		err = loop_clr_fd(lo);
 		if (!err)
 			goto out_unlocked;
@@ -1424,7 +1423,7 @@ static int lo_ioctl(struct block_device *bdev, fmode_t mode,
 		break;
 	case LOOP_GET_STATUS:
 		err = loop_get_status_old(lo, (struct loop_info __user *) arg);
-		/* loop_get_status() unlocks loop_ctl_mutex */
+		/* loop_get_status() unlocks lo_ctl_mutex */
 		goto out_unlocked;
 	case LOOP_SET_STATUS64:
 		err = -EPERM;
@@ -1434,7 +1433,7 @@ static int lo_ioctl(struct block_device *bdev, fmode_t mode,
 		break;
 	case LOOP_GET_STATUS64:
 		err = loop_get_status64(lo, (struct loop_info64 __user *) arg);
-		/* loop_get_status() unlocks loop_ctl_mutex */
+		/* loop_get_status() unlocks lo_ctl_mutex */
 		goto out_unlocked;
 	case LOOP_SET_CAPACITY:
 		err = -EPERM;
@@ -1454,7 +1453,7 @@ static int lo_ioctl(struct block_device *bdev, fmode_t mode,
 	default:
 		err = lo->ioctl ? lo->ioctl(lo, cmd, arg) : -EINVAL;
 	}
-	mutex_unlock(&loop_ctl_mutex);
+	mutex_unlock(&lo->lo_ctl_mutex);
 
 out_unlocked:
 	return err;
@@ -1571,7 +1570,7 @@ loop_get_status_compat(struct loop_device *lo,
 	int err;
 
 	if (!arg) {
-		mutex_unlock(&loop_ctl_mutex);
+		mutex_unlock(&lo->lo_ctl_mutex);
 		return -EINVAL;
 	}
 	err = loop_get_status(lo, &info64);
@@ -1588,16 +1587,16 @@ static int lo_compat_ioctl(struct block_device *bdev, fmode_t mode,
 
 	switch(cmd) {
 	case LOOP_SET_STATUS:
-		mutex_lock(&loop_ctl_mutex);
+		mutex_lock(&lo->lo_ctl_mutex);
 		err = loop_set_status_compat(
 			lo, (const struct compat_loop_info __user *) arg);
-		mutex_unlock(&loop_ctl_mutex);
+		mutex_unlock(&lo->lo_ctl_mutex);
 		break;
 	case LOOP_GET_STATUS:
-		mutex_lock(&loop_ctl_mutex);
+		mutex_lock(&lo->lo_ctl_mutex);
 		err = loop_get_status_compat(
 			lo, (struct compat_loop_info __user *) arg);
-		/* loop_get_status() unlocks loop_ctl_mutex */
+		/* loop_get_status() unlocks lo_ctl_mutex */
 		break;
 	case LOOP_SET_CAPACITY:
 	case LOOP_CLR_FD:
@@ -1641,7 +1640,7 @@ static void __lo_release(struct loop_device *lo)
 	if (atomic_dec_return(&lo->lo_refcnt))
 		return;
 
-	mutex_lock(&loop_ctl_mutex);
+	mutex_lock(&lo->lo_ctl_mutex);
 	if (lo->lo_flags & LO_FLAGS_AUTOCLEAR) {
 		/*
 		 * In autoclear mode, stop the loop thread
@@ -1659,7 +1658,7 @@ static void __lo_release(struct loop_device *lo)
 		blk_mq_unfreeze_queue(lo->lo_queue);
 	}
 
-	mutex_unlock(&loop_ctl_mutex);
+	mutex_unlock(&lo->lo_ctl_mutex);
 }
 
 static void lo_release(struct gendisk *disk, fmode_t mode)
@@ -1705,10 +1704,10 @@ static int unregister_transfer_cb(int id, void *ptr, void *data)
 	struct loop_device *lo = ptr;
 	struct loop_func_table *xfer = data;
 
-	mutex_lock(&loop_ctl_mutex);
+	mutex_lock(&lo->lo_ctl_mutex);
 	if (lo->lo_encryption == xfer)
 		loop_release_xfer(lo);
-	mutex_unlock(&loop_ctl_mutex);
+	mutex_unlock(&lo->lo_ctl_mutex);
 	return 0;
 }
 
@@ -1881,6 +1880,7 @@ static int loop_add(struct loop_device **l, int i)
 	if (!part_shift)
 		disk->flags |= GENHD_FL_NO_PART_SCAN;
 	disk->flags |= GENHD_FL_EXT_DEVT;
+	mutex_init(&lo->lo_ctl_mutex);
 	atomic_set(&lo->lo_refcnt, 0);
 	lo->lo_number		= i;
 	spin_lock_init(&lo->lo_lock);
@@ -1993,19 +1993,19 @@ static long loop_control_ioctl(struct file *file, unsigned int cmd,
 		ret = loop_lookup(&lo, parm);
 		if (ret < 0)
 			break;
-		mutex_lock(&loop_ctl_mutex);
+		mutex_lock(&lo->lo_ctl_mutex);
 		if (lo->lo_state != Lo_unbound) {
 			ret = -EBUSY;
-			mutex_unlock(&loop_ctl_mutex);
+			mutex_unlock(&lo->lo_ctl_mutex);
 			break;
 		}
 		if (atomic_read(&lo->lo_refcnt) > 0) {
 			ret = -EBUSY;
-			mutex_unlock(&loop_ctl_mutex);
+			mutex_unlock(&lo->lo_ctl_mutex);
 			break;
 		}
 		lo->lo_disk->private_data = NULL;
-		mutex_unlock(&loop_ctl_mutex);
+		mutex_unlock(&lo->lo_ctl_mutex);
 		idr_remove(&loop_index_idr, lo->lo_number);
 		loop_remove(lo);
 		break;
diff --git a/drivers/block/loop.h b/drivers/block/loop.h
index b2251752452b..dfc54ceba410 100644
--- a/drivers/block/loop.h
+++ b/drivers/block/loop.h
@@ -54,6 +54,7 @@ struct loop_device {
 
 	spinlock_t		lo_lock;
 	int			lo_state;
+	struct mutex		lo_ctl_mutex;
 	struct kthread_worker	worker;
 	struct task_struct	*worker_task;
 	bool			use_dio;
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index a46776a84480..133178c9b2cf 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -488,18 +488,18 @@ struct zram_work {
 	struct zram *zram;
 	unsigned long entry;
 	struct bio *bio;
+	struct bio_vec bvec;
 };
 
 #if PAGE_SIZE != 4096
 static void zram_sync_read(struct work_struct *work)
 {
-	struct bio_vec bvec;
 	struct zram_work *zw = container_of(work, struct zram_work, work);
 	struct zram *zram = zw->zram;
 	unsigned long entry = zw->entry;
 	struct bio *bio = zw->bio;
 
-	read_from_bdev_async(zram, &bvec, entry, bio);
+	read_from_bdev_async(zram, &zw->bvec, entry, bio);
 }
 
 /*
@@ -512,6 +512,7 @@ static int read_from_bdev_sync(struct zram *zram, struct bio_vec *bvec,
 {
 	struct zram_work work;
 
+	work.bvec = *bvec;
 	work.zram = zram;
 	work.entry = entry;
 	work.bio = bio;
diff --git a/drivers/dma/sh/rcar-dmac.c b/drivers/dma/sh/rcar-dmac.c
index 9d6ce5051d8f..77b126525dac 100644
--- a/drivers/dma/sh/rcar-dmac.c
+++ b/drivers/dma/sh/rcar-dmac.c
@@ -1332,6 +1332,7 @@ static enum dma_status rcar_dmac_tx_status(struct dma_chan *chan,
 	enum dma_status status;
 	unsigned long flags;
 	unsigned int residue;
+	bool cyclic;
 
 	status = dma_cookie_status(chan, cookie, txstate);
 	if (status == DMA_COMPLETE || !txstate)
@@ -1339,10 +1340,11 @@ static enum dma_status rcar_dmac_tx_status(struct dma_chan *chan,
 
 	spin_lock_irqsave(&rchan->lock, flags);
 	residue = rcar_dmac_chan_get_residue(rchan, cookie);
+	cyclic = rchan->desc.running ? rchan->desc.running->cyclic : false;
 	spin_unlock_irqrestore(&rchan->lock, flags);
 
 	/* if there's no residue, the cookie is complete */
-	if (!residue)
+	if (!residue && !cyclic)
 		return DMA_COMPLETE;
 
 	dma_set_residue(txstate, residue);
diff --git a/drivers/gpu/drm/i915/intel_fbdev.c b/drivers/gpu/drm/i915/intel_fbdev.c
index 14eb8a064562..da2d309574ba 100644
--- a/drivers/gpu/drm/i915/intel_fbdev.c
+++ b/drivers/gpu/drm/i915/intel_fbdev.c
@@ -326,8 +326,8 @@ static bool intel_fb_initial_config(struct drm_fb_helper *fb_helper,
 				    bool *enabled, int width, int height)
 {
 	struct drm_i915_private *dev_priv = to_i915(fb_helper->dev);
+	unsigned long conn_configured, conn_seq, mask;
 	unsigned int count = min(fb_helper->connector_count, BITS_PER_LONG);
-	unsigned long conn_configured, conn_seq;
 	int i, j;
 	bool *save_enabled;
 	bool fallback = true, ret = true;
@@ -345,9 +345,10 @@ static bool intel_fb_initial_config(struct drm_fb_helper *fb_helper,
 		drm_modeset_backoff(&ctx);
 
 	memcpy(save_enabled, enabled, count);
-	conn_seq = GENMASK(count - 1, 0);
+	mask = GENMASK(count - 1, 0);
 	conn_configured = 0;
 retry:
+	conn_seq = conn_configured;
 	for (i = 0; i < count; i++) {
 		struct drm_fb_helper_connector *fb_conn;
 		struct drm_connector *connector;
@@ -360,8 +361,7 @@ retry:
 		if (conn_configured & BIT(i))
 			continue;
 
-		/* First pass, only consider tiled connectors */
-		if (conn_seq == GENMASK(count - 1, 0) && !connector->has_tile)
+		if (conn_seq == 0 && !connector->has_tile)
 			continue;
 
 		if (connector->status == connector_status_connected)
@@ -465,10 +465,8 @@ retry:
 		conn_configured |= BIT(i);
 	}
 
-	if (conn_configured != conn_seq) { /* repeat until no more are found */
-		conn_seq = conn_configured;
+	if ((conn_configured & mask) != mask && conn_configured != conn_seq)
 		goto retry;
-	}
 
 	/*
 	 * If the BIOS didn't enable everything it could, fall back to have the
diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c
index ce1e3b9e14c9..7747f160c740 100644
--- a/drivers/gpu/drm/vc4/vc4_crtc.c
+++ b/drivers/gpu/drm/vc4/vc4_crtc.c
@@ -867,7 +867,7 @@ static void
 vc4_crtc_reset(struct drm_crtc *crtc)
 {
 	if (crtc->state)
-		__drm_atomic_helper_crtc_destroy_state(crtc->state);
+		vc4_crtc_destroy_state(crtc, crtc->state);
 
 	crtc->state = kzalloc(sizeof(struct vc4_crtc_state), GFP_KERNEL);
 	if (crtc->state)
diff --git a/drivers/hwtracing/intel_th/gth.c b/drivers/hwtracing/intel_th/gth.c
index bb27a3150563..2a3ae9006c58 100644
--- a/drivers/hwtracing/intel_th/gth.c
+++ b/drivers/hwtracing/intel_th/gth.c
@@ -624,7 +624,7 @@ static void intel_th_gth_unassign(struct intel_th_device *thdev,
 	othdev->output.port = -1;
 	othdev->output.active = false;
 	gth->output[port].output = NULL;
-	for (master = 0; master < TH_CONFIGURABLE_MASTERS; master++)
+	for (master = 0; master <= TH_CONFIGURABLE_MASTERS; master++)
 		if (gth->master[master] == port)
 			gth->master[master] = -1;
 	spin_unlock(&gth->gth_lock);
diff --git a/drivers/infiniband/sw/rdmavt/mr.c b/drivers/infiniband/sw/rdmavt/mr.c
index 524e6134642e..e7013d2d4f0e 100644
--- a/drivers/infiniband/sw/rdmavt/mr.c
+++ b/drivers/infiniband/sw/rdmavt/mr.c
@@ -611,11 +611,6 @@ static int rvt_set_page(struct ib_mr *ibmr, u64 addr)
 	if (unlikely(mapped_segs == mr->mr.max_segs))
 		return -ENOMEM;
 
-	if (mr->mr.length == 0) {
-		mr->mr.user_base = addr;
-		mr->mr.iova = addr;
-	}
-
 	m = mapped_segs / RVT_SEGSZ;
 	n = mapped_segs % RVT_SEGSZ;
 	mr->mr.map[m]->segs[n].vaddr = (void *)addr;
@@ -633,17 +628,24 @@ static int rvt_set_page(struct ib_mr *ibmr, u64 addr)
  * @sg_nents: number of entries in sg
  * @sg_offset: offset in bytes into sg
  *
+ * Overwrite rvt_mr length with mr length calculated by ib_sg_to_pages.
+ *
  * Return: number of sg elements mapped to the memory region
  */
 int rvt_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg,
 		  int sg_nents, unsigned int *sg_offset)
 {
 	struct rvt_mr *mr = to_imr(ibmr);
+	int ret;
 
 	mr->mr.length = 0;
 	mr->mr.page_shift = PAGE_SHIFT;
-	return ib_sg_to_pages(ibmr, sg, sg_nents, sg_offset,
-			      rvt_set_page);
+	ret = ib_sg_to_pages(ibmr, sg, sg_nents, sg_offset, rvt_set_page);
+	mr->mr.user_base = ibmr->iova;
+	mr->mr.iova = ibmr->iova;
+	mr->mr.offset = ibmr->iova - (u64)mr->mr.map[0]->segs[0].vaddr;
+	mr->mr.length = (size_t)ibmr->length;
+	return ret;
 }
 
 /**
@@ -674,6 +676,7 @@ int rvt_fast_reg_mr(struct rvt_qp *qp, struct ib_mr *ibmr, u32 key,
 	ibmr->rkey = key;
 	mr->mr.lkey = key;
 	mr->mr.access_flags = access;
+	mr->mr.iova = ibmr->iova;
 	atomic_set(&mr->mr.lkey_invalid, 0);
 
 	return 0;
diff --git a/drivers/input/rmi4/rmi_f11.c b/drivers/input/rmi4/rmi_f11.c
index bc5e37f30ac1..bb63b8823d62 100644
--- a/drivers/input/rmi4/rmi_f11.c
+++ b/drivers/input/rmi4/rmi_f11.c
@@ -1239,7 +1239,7 @@ static int rmi_f11_initialize(struct rmi_function *fn)
 	}
 
 	rc = f11_write_control_regs(fn, &f11->sens_query,
-			   &f11->dev_controls, fn->fd.query_base_addr);
+			   &f11->dev_controls, fn->fd.control_base_addr);
 	if (rc)
 		dev_warn(&fn->dev, "Failed to write control registers\n");
 
diff --git a/drivers/md/dm-integrity.c b/drivers/md/dm-integrity.c
index 036379a23499..23f0f4eaaa2e 100644
--- a/drivers/md/dm-integrity.c
+++ b/drivers/md/dm-integrity.c
@@ -2917,17 +2917,17 @@ static int dm_integrity_ctr(struct dm_target *ti, unsigned argc, char **argv)
 				goto bad;
 			}
 			ic->sectors_per_block = val >> SECTOR_SHIFT;
-		} else if (!memcmp(opt_string, "internal_hash:", strlen("internal_hash:"))) {
+		} else if (!strncmp(opt_string, "internal_hash:", strlen("internal_hash:"))) {
 			r = get_alg_and_key(opt_string, &ic->internal_hash_alg, &ti->error,
 					    "Invalid internal_hash argument");
 			if (r)
 				goto bad;
-		} else if (!memcmp(opt_string, "journal_crypt:", strlen("journal_crypt:"))) {
+		} else if (!strncmp(opt_string, "journal_crypt:", strlen("journal_crypt:"))) {
 			r = get_alg_and_key(opt_string, &ic->journal_crypt_alg, &ti->error,
 					    "Invalid journal_crypt argument");
 			if (r)
 				goto bad;
-		} else if (!memcmp(opt_string, "journal_mac:", strlen("journal_mac:"))) {
+		} else if (!strncmp(opt_string, "journal_mac:", strlen("journal_mac:"))) {
 			r = get_alg_and_key(opt_string, &ic->journal_mac_alg,  &ti->error,
 					    "Invalid journal_mac argument");
 			if (r)
diff --git a/drivers/net/ethernet/intel/fm10k/fm10k_main.c b/drivers/net/ethernet/intel/fm10k/fm10k_main.c
index 103c0a742d03..fef0bff4a54b 100644
--- a/drivers/net/ethernet/intel/fm10k/fm10k_main.c
+++ b/drivers/net/ethernet/intel/fm10k/fm10k_main.c
@@ -58,6 +58,8 @@ static int __init fm10k_init_module(void)
 	/* create driver workqueue */
 	fm10k_workqueue = alloc_workqueue("%s", WQ_MEM_RECLAIM, 0,
 					  fm10k_driver_name);
+	if (!fm10k_workqueue)
+		return -ENOMEM;
 
 	fm10k_dbg_init();
 
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
index d9db3ad3d765..26ad27b3f687 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
@@ -1622,7 +1622,7 @@ static int mlx5e_get_module_info(struct net_device *netdev,
 		break;
 	case MLX5_MODULE_ID_SFP:
 		modinfo->type       = ETH_MODULE_SFF_8472;
-		modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
+		modinfo->eeprom_len = MLX5_EEPROM_PAGE_LENGTH;
 		break;
 	default:
 		netdev_err(priv->netdev, "%s: cable type not recognized:0x%x\n",
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/port.c b/drivers/net/ethernet/mellanox/mlx5/core/port.c
index ccb6287aeeb7..1d2bb7fa68b1 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/port.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/port.c
@@ -392,10 +392,6 @@ int mlx5_query_module_eeprom(struct mlx5_core_dev *dev,
 		size -= offset + size - MLX5_EEPROM_PAGE_LENGTH;
 
 	i2c_addr = MLX5_I2C_ADDR_LOW;
-	if (offset >= MLX5_EEPROM_PAGE_LENGTH) {
-		i2c_addr = MLX5_I2C_ADDR_HIGH;
-		offset -= MLX5_EEPROM_PAGE_LENGTH;
-	}
 
 	MLX5_SET(mcia_reg, in, l, 0);
 	MLX5_SET(mcia_reg, in, module, module_num);
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index 29d37355d8c6..ab09f9e43c79 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -2521,11 +2521,11 @@ mlxsw_sp_port_set_link_ksettings(struct net_device *dev,
 	if (err)
 		return err;
 
+	mlxsw_sp_port->link.autoneg = autoneg;
+
 	if (!netif_running(dev))
 		return 0;
 
-	mlxsw_sp_port->link.autoneg = autoneg;
-
 	mlxsw_sp_port_admin_status_set(mlxsw_sp_port, false);
 	mlxsw_sp_port_admin_status_set(mlxsw_sp_port, true);
 
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index f2429ec07b57..ecf3f8c1bc0e 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -2582,8 +2582,6 @@ static int stmmac_open(struct net_device *dev)
 	struct stmmac_priv *priv = netdev_priv(dev);
 	int ret;
 
-	stmmac_check_ether_addr(priv);
-
 	if (priv->hw->pcs != STMMAC_PCS_RGMII &&
 	    priv->hw->pcs != STMMAC_PCS_TBI &&
 	    priv->hw->pcs != STMMAC_PCS_RTBI) {
@@ -4213,6 +4211,8 @@ int stmmac_dvr_probe(struct device *device,
 	if (ret)
 		goto error_hw_init;
 
+	stmmac_check_ether_addr(priv);
+
 	/* Configure real RX and TX queues */
 	netif_set_real_num_rx_queues(ndev, priv->plat->rx_queues_to_use);
 	netif_set_real_num_tx_queues(ndev, priv->plat->tx_queues_to_use);
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c
index d819e8eaba12..cc1e887e47b5 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c
@@ -159,6 +159,12 @@ static const struct dmi_system_id quark_pci_dmi[] = {
 		},
 		.driver_data = (void *)&galileo_stmmac_dmi_data,
 	},
+	/*
+	 * There are 2 types of SIMATIC IOT2000: IOT20202 and IOT2040.
+	 * The asset tag "6ES7647-0AA00-0YA2" is only for IOT2020 which
+	 * has only one pci network device while other asset tags are
+	 * for IOT2040 which has two.
+	 */
 	{
 		.matches = {
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "SIMATIC IOT2000"),
@@ -170,8 +176,6 @@ static const struct dmi_system_id quark_pci_dmi[] = {
 	{
 		.matches = {
 			DMI_EXACT_MATCH(DMI_BOARD_NAME, "SIMATIC IOT2000"),
-			DMI_EXACT_MATCH(DMI_BOARD_ASSET_TAG,
-					"6ES7647-0AA00-1YA2"),
 		},
 		.driver_data = (void *)&iot2040_stmmac_dmi_data,
 	},
diff --git a/drivers/net/slip/slhc.c b/drivers/net/slip/slhc.c
index f4e93f5fc204..ea90db3c7705 100644
--- a/drivers/net/slip/slhc.c
+++ b/drivers/net/slip/slhc.c
@@ -153,7 +153,7 @@ out_fail:
 void
 slhc_free(struct slcompress *comp)
 {
-	if ( comp == NULLSLCOMPR )
+	if ( IS_ERR_OR_NULL(comp) )
 		return;
 
 	if ( comp->tstate != NULLSLSTATE )
diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c
index fea141e71705..e9a92ed5a308 100644
--- a/drivers/net/team/team.c
+++ b/drivers/net/team/team.c
@@ -1157,6 +1157,12 @@ static int team_port_add(struct team *team, struct net_device *port_dev)
 		return -EINVAL;
 	}
 
+	if (netdev_has_upper_dev(dev, port_dev)) {
+		netdev_err(dev, "Device %s is already an upper device of the team interface\n",
+			   portname);
+		return -EBUSY;
+	}
+
 	if (port_dev->features & NETIF_F_VLAN_CHALLENGED &&
 	    vlan_uses_dev(dev)) {
 		netdev_err(dev, "Device %s is VLAN challenged and team device has VLAN set up\n",
diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
index 2f3dbf1c3c2d..79d2c0bf7870 100644
--- a/drivers/usb/core/driver.c
+++ b/drivers/usb/core/driver.c
@@ -1891,14 +1891,11 @@ int usb_runtime_idle(struct device *dev)
 	return -EBUSY;
 }
 
-int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable)
+static int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable)
 {
 	struct usb_hcd *hcd = bus_to_hcd(udev->bus);
 	int ret = -EPERM;
 
-	if (enable && !udev->usb2_hw_lpm_allowed)
-		return 0;
-
 	if (hcd->driver->set_usb2_hw_lpm) {
 		ret = hcd->driver->set_usb2_hw_lpm(hcd, udev, enable);
 		if (!ret)
@@ -1908,6 +1905,24 @@ int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable)
 	return ret;
 }
 
+int usb_enable_usb2_hardware_lpm(struct usb_device *udev)
+{
+	if (!udev->usb2_hw_lpm_capable ||
+	    !udev->usb2_hw_lpm_allowed ||
+	    udev->usb2_hw_lpm_enabled)
+		return 0;
+
+	return usb_set_usb2_hardware_lpm(udev, 1);
+}
+
+int usb_disable_usb2_hardware_lpm(struct usb_device *udev)
+{
+	if (!udev->usb2_hw_lpm_enabled)
+		return 0;
+
+	return usb_set_usb2_hardware_lpm(udev, 0);
+}
+
 #endif /* CONFIG_PM */
 
 struct bus_type usb_bus_type = {
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 4a4e666a8e09..a9541525ea4f 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -3174,8 +3174,7 @@ int usb_port_suspend(struct usb_device *udev, pm_message_t msg)
 	}
 
 	/* disable USB2 hardware LPM */
-	if (udev->usb2_hw_lpm_enabled == 1)
-		usb_set_usb2_hardware_lpm(udev, 0);
+	usb_disable_usb2_hardware_lpm(udev);
 
 	if (usb_disable_ltm(udev)) {
 		dev_err(&udev->dev, "Failed to disable LTM before suspend\n.");
@@ -3213,8 +3212,7 @@ int usb_port_suspend(struct usb_device *udev, pm_message_t msg)
 		usb_enable_ltm(udev);
  err_ltm:
 		/* Try to enable USB2 hardware LPM again */
-		if (udev->usb2_hw_lpm_capable == 1)
-			usb_set_usb2_hardware_lpm(udev, 1);
+		usb_enable_usb2_hardware_lpm(udev);
 
 		if (udev->do_remote_wakeup)
 			(void) usb_disable_remote_wakeup(udev);
@@ -3497,8 +3495,7 @@ int usb_port_resume(struct usb_device *udev, pm_message_t msg)
 		hub_port_logical_disconnect(hub, port1);
 	} else  {
 		/* Try to enable USB2 hardware LPM */
-		if (udev->usb2_hw_lpm_capable == 1)
-			usb_set_usb2_hardware_lpm(udev, 1);
+		usb_enable_usb2_hardware_lpm(udev);
 
 		/* Try to enable USB3 LTM */
 		usb_enable_ltm(udev);
@@ -4334,7 +4331,7 @@ static void hub_set_initial_usb2_lpm_policy(struct usb_device *udev)
 	if ((udev->bos->ext_cap->bmAttributes & cpu_to_le32(USB_BESL_SUPPORT)) ||
 			connect_type == USB_PORT_CONNECT_TYPE_HARD_WIRED) {
 		udev->usb2_hw_lpm_allowed = 1;
-		usb_set_usb2_hardware_lpm(udev, 1);
+		usb_enable_usb2_hardware_lpm(udev);
 	}
 }
 
@@ -5491,8 +5488,7 @@ static int usb_reset_and_verify_device(struct usb_device *udev)
 	/* Disable USB2 hardware LPM.
 	 * It will be re-enabled by the enumeration process.
 	 */
-	if (udev->usb2_hw_lpm_enabled == 1)
-		usb_set_usb2_hardware_lpm(udev, 0);
+	usb_disable_usb2_hardware_lpm(udev);
 
 	/* Disable LPM and LTM while we reset the device and reinstall the alt
 	 * settings.  Device-initiated LPM settings, and system exit latency
@@ -5602,7 +5598,7 @@ static int usb_reset_and_verify_device(struct usb_device *udev)
 
 done:
 	/* Now that the alt settings are re-installed, enable LTM and LPM. */
-	usb_set_usb2_hardware_lpm(udev, 1);
+	usb_enable_usb2_hardware_lpm(udev);
 	usb_unlocked_enable_lpm(udev);
 	usb_enable_ltm(udev);
 	usb_release_bos_descriptor(udev);
diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c
index 833ddd228e3a..1fe3c5d3be5f 100644
--- a/drivers/usb/core/message.c
+++ b/drivers/usb/core/message.c
@@ -1182,8 +1182,7 @@ void usb_disable_device(struct usb_device *dev, int skip_ep0)
 			dev->actconfig->interface[i] = NULL;
 		}
 
-		if (dev->usb2_hw_lpm_enabled == 1)
-			usb_set_usb2_hardware_lpm(dev, 0);
+		usb_disable_usb2_hardware_lpm(dev);
 		usb_unlocked_disable_lpm(dev);
 		usb_disable_ltm(dev);
 
diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c
index d930bfda4010..15c19863f7b3 100644
--- a/drivers/usb/core/sysfs.c
+++ b/drivers/usb/core/sysfs.c
@@ -508,7 +508,10 @@ static ssize_t usb2_hardware_lpm_store(struct device *dev,
 
 	if (!ret) {
 		udev->usb2_hw_lpm_allowed = value;
-		ret = usb_set_usb2_hardware_lpm(udev, value);
+		if (value)
+			ret = usb_enable_usb2_hardware_lpm(udev);
+		else
+			ret = usb_disable_usb2_hardware_lpm(udev);
 	}
 
 	usb_unlock_device(udev);
diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h
index dc6949248823..1b5f346d93eb 100644
--- a/drivers/usb/core/usb.h
+++ b/drivers/usb/core/usb.h
@@ -89,7 +89,8 @@ extern int usb_remote_wakeup(struct usb_device *dev);
 extern int usb_runtime_suspend(struct device *dev);
 extern int usb_runtime_resume(struct device *dev);
 extern int usb_runtime_idle(struct device *dev);
-extern int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable);
+extern int usb_enable_usb2_hardware_lpm(struct usb_device *udev);
+extern int usb_disable_usb2_hardware_lpm(struct usb_device *udev);
 
 #else
 
@@ -109,7 +110,12 @@ static inline int usb_autoresume_device(struct usb_device *udev)
 	return 0;
 }
 
-static inline int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable)
+static inline int usb_enable_usb2_hardware_lpm(struct usb_device *udev)
+{
+	return 0;
+}
+
+static inline int usb_disable_usb2_hardware_lpm(struct usb_device *udev)
 {
 	return 0;
 }
diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c
index 50eeb74ddc0a..f77a9b3370b5 100644
--- a/drivers/vfio/vfio_iommu_type1.c
+++ b/drivers/vfio/vfio_iommu_type1.c
@@ -58,12 +58,18 @@ module_param_named(disable_hugepages,
 MODULE_PARM_DESC(disable_hugepages,
 		 "Disable VFIO IOMMU support for IOMMU hugepages.");
 
+static unsigned int dma_entry_limit __read_mostly = U16_MAX;
+module_param_named(dma_entry_limit, dma_entry_limit, uint, 0644);
+MODULE_PARM_DESC(dma_entry_limit,
+		 "Maximum number of user DMA mappings per container (65535).");
+
 struct vfio_iommu {
 	struct list_head	domain_list;
 	struct vfio_domain	*external_domain; /* domain for external user */
 	struct mutex		lock;
 	struct rb_root		dma_list;
 	struct blocking_notifier_head notifier;
+	unsigned int		dma_avail;
 	bool			v2;
 	bool			nesting;
 };
@@ -732,6 +738,7 @@ static void vfio_remove_dma(struct vfio_iommu *iommu, struct vfio_dma *dma)
 	vfio_unlink_dma(iommu, dma);
 	put_task_struct(dma->task);
 	kfree(dma);
+	iommu->dma_avail++;
 }
 
 static unsigned long vfio_pgsize_bitmap(struct vfio_iommu *iommu)
@@ -1003,12 +1010,18 @@ static int vfio_dma_do_map(struct vfio_iommu *iommu,
 		goto out_unlock;
 	}
 
+	if (!iommu->dma_avail) {
+		ret = -ENOSPC;
+		goto out_unlock;
+	}
+
 	dma = kzalloc(sizeof(*dma), GFP_KERNEL);
 	if (!dma) {
 		ret = -ENOMEM;
 		goto out_unlock;
 	}
 
+	iommu->dma_avail--;
 	dma->iova = iova;
 	dma->vaddr = vaddr;
 	dma->prot = prot;
@@ -1504,6 +1517,7 @@ static void *vfio_iommu_type1_open(unsigned long arg)
 
 	INIT_LIST_HEAD(&iommu->domain_list);
 	iommu->dma_list = RB_ROOT;
+	iommu->dma_avail = dma_entry_limit;
 	mutex_init(&iommu->lock);
 	BLOCKING_INIT_NOTIFIER_HEAD(&iommu->notifier);
 
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index 8a5266699b67..56e8fc896f6b 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -1454,6 +1454,7 @@ void ceph_dentry_lru_del(struct dentry *dn)
 unsigned ceph_dentry_hash(struct inode *dir, struct dentry *dn)
 {
 	struct ceph_inode_info *dci = ceph_inode(dir);
+	unsigned hash;
 
 	switch (dci->i_dir_layout.dl_dir_hash) {
 	case 0:	/* for backward compat */
@@ -1461,8 +1462,11 @@ unsigned ceph_dentry_hash(struct inode *dir, struct dentry *dn)
 		return dn->d_name.hash;
 
 	default:
-		return ceph_str_hash(dci->i_dir_layout.dl_dir_hash,
+		spin_lock(&dn->d_lock);
+		hash = ceph_str_hash(dci->i_dir_layout.dl_dir_hash,
 				     dn->d_name.name, dn->d_name.len);
+		spin_unlock(&dn->d_lock);
+		return hash;
 	}
 }
 
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index a48984dd6426..e1ded4bd6115 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -1219,6 +1219,15 @@ static int remove_session_caps_cb(struct inode *inode, struct ceph_cap *cap,
 			list_add(&ci->i_prealloc_cap_flush->i_list, &to_remove);
 			ci->i_prealloc_cap_flush = NULL;
 		}
+
+               if (drop &&
+                  ci->i_wrbuffer_ref_head == 0 &&
+                  ci->i_wr_ref == 0 &&
+                  ci->i_dirty_caps == 0 &&
+                  ci->i_flushing_caps == 0) {
+                      ceph_put_snap_context(ci->i_head_snapc);
+                      ci->i_head_snapc = NULL;
+               }
 	}
 	spin_unlock(&ci->i_ceph_lock);
 	while (!list_empty(&to_remove)) {
@@ -1863,10 +1872,39 @@ retry:
 	return path;
 }
 
+/* Duplicate the dentry->d_name.name safely */
+static int clone_dentry_name(struct dentry *dentry, const char **ppath,
+			     int *ppathlen)
+{
+	u32 len;
+	char *name;
+
+retry:
+	len = READ_ONCE(dentry->d_name.len);
+	name = kmalloc(len + 1, GFP_NOFS);
+	if (!name)
+		return -ENOMEM;
+
+	spin_lock(&dentry->d_lock);
+	if (dentry->d_name.len != len) {
+		spin_unlock(&dentry->d_lock);
+		kfree(name);
+		goto retry;
+	}
+	memcpy(name, dentry->d_name.name, len);
+	spin_unlock(&dentry->d_lock);
+
+	name[len] = '\0';
+	*ppath = name;
+	*ppathlen = len;
+	return 0;
+}
+
 static int build_dentry_path(struct dentry *dentry, struct inode *dir,
 			     const char **ppath, int *ppathlen, u64 *pino,
-			     int *pfreepath)
+			     bool *pfreepath, bool parent_locked)
 {
+	int ret;
 	char *path;
 
 	rcu_read_lock();
@@ -1875,8 +1913,15 @@ static int build_dentry_path(struct dentry *dentry, struct inode *dir,
 	if (dir && ceph_snap(dir) == CEPH_NOSNAP) {
 		*pino = ceph_ino(dir);
 		rcu_read_unlock();
-		*ppath = dentry->d_name.name;
-		*ppathlen = dentry->d_name.len;
+		if (parent_locked) {
+			*ppath = dentry->d_name.name;
+			*ppathlen = dentry->d_name.len;
+		} else {
+			ret = clone_dentry_name(dentry, ppath, ppathlen);
+			if (ret)
+				return ret;
+			*pfreepath = true;
+		}
 		return 0;
 	}
 	rcu_read_unlock();
@@ -1884,13 +1929,13 @@ static int build_dentry_path(struct dentry *dentry, struct inode *dir,
 	if (IS_ERR(path))
 		return PTR_ERR(path);
 	*ppath = path;
-	*pfreepath = 1;
+	*pfreepath = true;
 	return 0;
 }
 
 static int build_inode_path(struct inode *inode,
 			    const char **ppath, int *ppathlen, u64 *pino,
-			    int *pfreepath)
+			    bool *pfreepath)
 {
 	struct dentry *dentry;
 	char *path;
@@ -1906,7 +1951,7 @@ static int build_inode_path(struct inode *inode,
 	if (IS_ERR(path))
 		return PTR_ERR(path);
 	*ppath = path;
-	*pfreepath = 1;
+	*pfreepath = true;
 	return 0;
 }
 
@@ -1917,7 +1962,7 @@ static int build_inode_path(struct inode *inode,
 static int set_request_path_attr(struct inode *rinode, struct dentry *rdentry,
 				  struct inode *rdiri, const char *rpath,
 				  u64 rino, const char **ppath, int *pathlen,
-				  u64 *ino, int *freepath)
+				  u64 *ino, bool *freepath, bool parent_locked)
 {
 	int r = 0;
 
@@ -1927,7 +1972,7 @@ static int set_request_path_attr(struct inode *rinode, struct dentry *rdentry,
 		     ceph_snap(rinode));
 	} else if (rdentry) {
 		r = build_dentry_path(rdentry, rdiri, ppath, pathlen, ino,
-					freepath);
+					freepath, parent_locked);
 		dout(" dentry %p %llx/%.*s\n", rdentry, *ino, *pathlen,
 		     *ppath);
 	} else if (rpath || rino) {
@@ -1953,7 +1998,7 @@ static struct ceph_msg *create_request_message(struct ceph_mds_client *mdsc,
 	const char *path2 = NULL;
 	u64 ino1 = 0, ino2 = 0;
 	int pathlen1 = 0, pathlen2 = 0;
-	int freepath1 = 0, freepath2 = 0;
+	bool freepath1 = false, freepath2 = false;
 	int len;
 	u16 releases;
 	void *p, *end;
@@ -1961,16 +2006,19 @@ static struct ceph_msg *create_request_message(struct ceph_mds_client *mdsc,
 
 	ret = set_request_path_attr(req->r_inode, req->r_dentry,
 			      req->r_parent, req->r_path1, req->r_ino1.ino,
-			      &path1, &pathlen1, &ino1, &freepath1);
+			      &path1, &pathlen1, &ino1, &freepath1,
+			      test_bit(CEPH_MDS_R_PARENT_LOCKED,
+					&req->r_req_flags));
 	if (ret < 0) {
 		msg = ERR_PTR(ret);
 		goto out;
 	}
 
+	/* If r_old_dentry is set, then assume that its parent is locked */
 	ret = set_request_path_attr(NULL, req->r_old_dentry,
 			      req->r_old_dentry_dir,
 			      req->r_path2, req->r_ino2.ino,
-			      &path2, &pathlen2, &ino2, &freepath2);
+			      &path2, &pathlen2, &ino2, &freepath2, true);
 	if (ret < 0) {
 		msg = ERR_PTR(ret);
 		goto out_free1;
diff --git a/fs/ceph/snap.c b/fs/ceph/snap.c
index 9b6207c84b68..a7e763dac038 100644
--- a/fs/ceph/snap.c
+++ b/fs/ceph/snap.c
@@ -568,7 +568,12 @@ void ceph_queue_cap_snap(struct ceph_inode_info *ci)
 	old_snapc = NULL;
 
 update_snapc:
-	if (ci->i_head_snapc) {
+       if (ci->i_wrbuffer_ref_head == 0 &&
+           ci->i_wr_ref == 0 &&
+           ci->i_dirty_caps == 0 &&
+           ci->i_flushing_caps == 0) {
+               ci->i_head_snapc = NULL;
+       } else {
 		ci->i_head_snapc = ceph_get_snap_context(new_snapc);
 		dout(" new snapc is %p\n", new_snapc);
 	}
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index 6fd4a6a75234..e7192ee7a89c 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -1730,6 +1730,10 @@ cifs_do_rename(const unsigned int xid, struct dentry *from_dentry,
 	if (rc == 0 || rc != -EBUSY)
 		goto do_rename_exit;
 
+	/* Don't fall back to using SMB on SMB 2+ mount */
+	if (server->vals->protocol_id != 0)
+		goto do_rename_exit;
+
 	/* open-file renames don't work across directories */
 	if (to_dentry->d_parent != from_dentry->d_parent)
 		goto do_rename_exit;
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index 311761a6ef6d..6761e905cab0 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -828,6 +828,7 @@ int ext4_get_inode_usage(struct inode *inode, qsize_t *usage)
 		bh = ext4_sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl, REQ_PRIO);
 		if (IS_ERR(bh)) {
 			ret = PTR_ERR(bh);
+			bh = NULL;
 			goto out;
 		}
 
@@ -2905,6 +2906,7 @@ int ext4_xattr_delete_inode(handle_t *handle, struct inode *inode,
 			if (error == -EIO)
 				EXT4_ERROR_INODE(inode, "block %llu read error",
 						 EXT4_I(inode)->i_file_acl);
+			bh = NULL;
 			goto cleanup;
 		}
 		error = ext4_xattr_check_block(inode, bh);
@@ -3061,6 +3063,7 @@ ext4_xattr_block_cache_find(struct inode *inode,
 		if (IS_ERR(bh)) {
 			if (PTR_ERR(bh) == -ENOMEM)
 				return NULL;
+			bh = NULL;
 			EXT4_ERROR_INODE(inode, "block %lu read error",
 					 (unsigned long)ce->e_value);
 		} else if (ext4_xattr_cmp(header, BHDR(bh)) == 0) {
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 77d8d03344c8..f464f8d9060c 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -2044,7 +2044,8 @@ static int nfs23_validate_mount_data(void *options,
 		memcpy(sap, &data->addr, sizeof(data->addr));
 		args->nfs_server.addrlen = sizeof(data->addr);
 		args->nfs_server.port = ntohs(data->addr.sin_port);
-		if (!nfs_verify_server_address(sap))
+		if (sap->sa_family != AF_INET ||
+		    !nfs_verify_server_address(sap))
 			goto out_no_address;
 
 		if (!(data->flags & NFS_MOUNT_TCP))
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index 49b0a9e7ff18..80aeb19b176b 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -939,8 +939,9 @@ static void nfsd4_cb_prepare(struct rpc_task *task, void *calldata)
 	cb->cb_seq_status = 1;
 	cb->cb_status = 0;
 	if (minorversion) {
-		if (!nfsd41_cb_get_slot(clp, task))
+		if (!cb->cb_holds_slot && !nfsd41_cb_get_slot(clp, task))
 			return;
+		cb->cb_holds_slot = true;
 	}
 	rpc_call_start(task);
 }
@@ -967,6 +968,9 @@ static bool nfsd4_cb_sequence_done(struct rpc_task *task, struct nfsd4_callback
 		return true;
 	}
 
+	if (!cb->cb_holds_slot)
+		goto need_restart;
+
 	switch (cb->cb_seq_status) {
 	case 0:
 		/*
@@ -1004,6 +1008,7 @@ static bool nfsd4_cb_sequence_done(struct rpc_task *task, struct nfsd4_callback
 			cb->cb_seq_status);
 	}
 
+	cb->cb_holds_slot = false;
 	clear_bit(0, &clp->cl_cb_slot_busy);
 	rpc_wake_up_next(&clp->cl_cb_waitq);
 	dprintk("%s: freed slot, new seqid=%d\n", __func__,
@@ -1211,6 +1216,7 @@ void nfsd4_init_cb(struct nfsd4_callback *cb, struct nfs4_client *clp,
 	cb->cb_seq_status = 1;
 	cb->cb_status = 0;
 	cb->cb_need_restart = false;
+	cb->cb_holds_slot = false;
 }
 
 void nfsd4_run_cb(struct nfsd4_callback *cb)
diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h
index 86aa92d200e1..133d8bf62a5c 100644
--- a/fs/nfsd/state.h
+++ b/fs/nfsd/state.h
@@ -69,6 +69,7 @@ struct nfsd4_callback {
 	int cb_seq_status;
 	int cb_status;
 	bool cb_need_restart;
+	bool cb_holds_slot;
 };
 
 struct nfsd4_callback_ops {
diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
index 8d5422bb9c1a..555698ddb943 100644
--- a/fs/proc/proc_sysctl.c
+++ b/fs/proc/proc_sysctl.c
@@ -1620,9 +1620,11 @@ static void drop_sysctl_table(struct ctl_table_header *header)
 	if (--header->nreg)
 		return;
 
-	if (parent)
+	if (parent) {
 		put_links(header);
-	start_unregistering(header);
+		start_unregistering(header);
+	}
+
 	if (!--header->count)
 		kfree_rcu(header, rcu);
 
diff --git a/fs/splice.c b/fs/splice.c
index 00d2f142dcf9..a598d444abe1 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -332,8 +332,8 @@ const struct pipe_buf_operations default_pipe_buf_ops = {
 	.get = generic_pipe_buf_get,
 };
 
-static int generic_pipe_buf_nosteal(struct pipe_inode_info *pipe,
-				    struct pipe_buffer *buf)
+int generic_pipe_buf_nosteal(struct pipe_inode_info *pipe,
+			     struct pipe_buffer *buf)
 {
 	return 1;
 }
diff --git a/include/linux/pipe_fs_i.h b/include/linux/pipe_fs_i.h
index befdcd304b3d..2dcf6e81b2e2 100644
--- a/include/linux/pipe_fs_i.h
+++ b/include/linux/pipe_fs_i.h
@@ -182,6 +182,7 @@ void free_pipe_info(struct pipe_inode_info *);
 void generic_pipe_buf_get(struct pipe_inode_info *, struct pipe_buffer *);
 int generic_pipe_buf_confirm(struct pipe_inode_info *, struct pipe_buffer *);
 int generic_pipe_buf_steal(struct pipe_inode_info *, struct pipe_buffer *);
+int generic_pipe_buf_nosteal(struct pipe_inode_info *, struct pipe_buffer *);
 void generic_pipe_buf_release(struct pipe_inode_info *, struct pipe_buffer *);
 void pipe_buf_mark_unmergeable(struct pipe_buffer *buf);
 
diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
index b2589c7e9439..22770168bff8 100644
--- a/kernel/sched/deadline.c
+++ b/kernel/sched/deadline.c
@@ -217,7 +217,6 @@ static void task_non_contending(struct task_struct *p)
 	if (dl_se->dl_runtime == 0)
 		return;
 
-	WARN_ON(hrtimer_active(&dl_se->inactive_timer));
 	WARN_ON(dl_se->dl_non_contending);
 
 	zerolag_time = dl_se->deadline -
@@ -234,7 +233,7 @@ static void task_non_contending(struct task_struct *p)
 	 * If the "0-lag time" already passed, decrease the active
 	 * utilization now, instead of starting a timer
 	 */
-	if (zerolag_time < 0) {
+	if ((zerolag_time < 0) || hrtimer_active(&dl_se->inactive_timer)) {
 		if (dl_task(p))
 			sub_running_bw(dl_se->dl_bw, dl_rq);
 		if (!dl_task(p) || p->state == TASK_DEAD) {
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index a5d163903835..af7de1f9906c 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -2026,6 +2026,10 @@ static u64 numa_get_avg_runtime(struct task_struct *p, u64 *period)
 	if (p->last_task_numa_placement) {
 		delta = runtime - p->last_sum_exec_runtime;
 		*period = now - p->last_task_numa_placement;
+
+		/* Avoid time going backwards, prevent potential divide error: */
+		if (unlikely((s64)*period < 0))
+			*period = 0;
 	} else {
 		delta = p->se.avg.load_sum / p->se.load.weight;
 		*period = LOAD_AVG_MAX;
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index 5f7f4f07499f..8123a8b53c54 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -700,7 +700,7 @@ u64 ring_buffer_time_stamp(struct ring_buffer *buffer, int cpu)
 
 	preempt_disable_notrace();
 	time = rb_time_stamp(buffer);
-	preempt_enable_no_resched_notrace();
+	preempt_enable_notrace();
 
 	return time;
 }
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index ffddb5ac255c..591be15404a1 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -494,8 +494,10 @@ int trace_pid_write(struct trace_pid_list *filtered_pids,
 	 * not modified.
 	 */
 	pid_list = kmalloc(sizeof(*pid_list), GFP_KERNEL);
-	if (!pid_list)
+	if (!pid_list) {
+		trace_parser_put(&parser);
 		return -ENOMEM;
+	}
 
 	pid_list->pid_max = READ_ONCE(pid_max);
 
@@ -505,6 +507,7 @@ int trace_pid_write(struct trace_pid_list *filtered_pids,
 
 	pid_list->pids = vzalloc((pid_list->pid_max + 7) >> 3);
 	if (!pid_list->pids) {
+		trace_parser_put(&parser);
 		kfree(pid_list);
 		return -ENOMEM;
 	}
@@ -6716,19 +6719,23 @@ struct buffer_ref {
 	struct ring_buffer	*buffer;
 	void			*page;
 	int			cpu;
-	int			ref;
+	refcount_t		refcount;
 };
 
+static void buffer_ref_release(struct buffer_ref *ref)
+{
+	if (!refcount_dec_and_test(&ref->refcount))
+		return;
+	ring_buffer_free_read_page(ref->buffer, ref->cpu, ref->page);
+	kfree(ref);
+}
+
 static void buffer_pipe_buf_release(struct pipe_inode_info *pipe,
 				    struct pipe_buffer *buf)
 {
 	struct buffer_ref *ref = (struct buffer_ref *)buf->private;
 
-	if (--ref->ref)
-		return;
-
-	ring_buffer_free_read_page(ref->buffer, ref->cpu, ref->page);
-	kfree(ref);
+	buffer_ref_release(ref);
 	buf->private = 0;
 }
 
@@ -6737,7 +6744,7 @@ static void buffer_pipe_buf_get(struct pipe_inode_info *pipe,
 {
 	struct buffer_ref *ref = (struct buffer_ref *)buf->private;
 
-	ref->ref++;
+	refcount_inc(&ref->refcount);
 }
 
 /* Pipe buffer operations for a buffer. */
@@ -6745,7 +6752,7 @@ static const struct pipe_buf_operations buffer_pipe_buf_ops = {
 	.can_merge		= 0,
 	.confirm		= generic_pipe_buf_confirm,
 	.release		= buffer_pipe_buf_release,
-	.steal			= generic_pipe_buf_steal,
+	.steal			= generic_pipe_buf_nosteal,
 	.get			= buffer_pipe_buf_get,
 };
 
@@ -6758,11 +6765,7 @@ static void buffer_spd_release(struct splice_pipe_desc *spd, unsigned int i)
 	struct buffer_ref *ref =
 		(struct buffer_ref *)spd->partial[i].private;
 
-	if (--ref->ref)
-		return;
-
-	ring_buffer_free_read_page(ref->buffer, ref->cpu, ref->page);
-	kfree(ref);
+	buffer_ref_release(ref);
 	spd->partial[i].private = 0;
 }
 
@@ -6817,7 +6820,7 @@ tracing_buffers_splice_read(struct file *file, loff_t *ppos,
 			break;
 		}
 
-		ref->ref = 1;
+		refcount_set(&ref->refcount, 1);
 		ref->buffer = iter->trace_buffer->buffer;
 		ref->page = ring_buffer_alloc_read_page(ref->buffer, iter->cpu_file);
 		if (IS_ERR(ref->page)) {
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 62d0e25c054c..131d5871f8c9 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -1884,6 +1884,7 @@ config TEST_KMOD
 	depends on m
 	depends on BLOCK && (64BIT || LBDAF)	  # for XFS, BTRFS
 	depends on NETDEVICES && NET_CORE && INET # for TUN
+	depends on BLOCK
 	select TEST_LKM
 	select XFS_FS
 	select TUN
diff --git a/mm/memory.c b/mm/memory.c
index fb9f7737c1ff..f99b64ca1303 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1804,10 +1804,15 @@ static int insert_pfn(struct vm_area_struct *vma, unsigned long addr,
 			 * in may not match the PFN we have mapped if the
 			 * mapped PFN is a writeable COW page.  In the mkwrite
 			 * case we are creating a writable PTE for a shared
-			 * mapping and we expect the PFNs to match.
+			 * mapping and we expect the PFNs to match. If they
+			 * don't match, we are likely racing with block
+			 * allocation and mapping invalidation so just skip the
+			 * update.
 			 */
-			if (WARN_ON_ONCE(pte_pfn(*pte) != pfn_t_to_pfn(pfn)))
+			if (pte_pfn(*pte) != pfn_t_to_pfn(pfn)) {
+				WARN_ON_ONCE(!is_zero_pfn(pte_pfn(*pte)));
 				goto out_unlock;
+			}
 			entry = *pte;
 			goto out_mkwrite;
 		} else
diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
index 38b3309edba8..b967bd51bf1f 100644
--- a/net/bridge/netfilter/ebtables.c
+++ b/net/bridge/netfilter/ebtables.c
@@ -2030,7 +2030,8 @@ static int ebt_size_mwt(struct compat_ebt_entry_mwt *match32,
 		if (match_kern)
 			match_kern->match_size = ret;
 
-		if (WARN_ON(type == EBT_COMPAT_TARGET && size_left))
+		/* rule should have no remaining data after target */
+		if (type == EBT_COMPAT_TARGET && size_left)
 			return -EINVAL;
 
 		match32 = (struct compat_ebt_entry_mwt *) buf;
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index c64f062d6323..6a7e187dd0a9 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1192,25 +1192,39 @@ static struct dst_entry *ipv4_dst_check(struct dst_entry *dst, u32 cookie)
 	return dst;
 }
 
-static void ipv4_link_failure(struct sk_buff *skb)
+static void ipv4_send_dest_unreach(struct sk_buff *skb)
 {
 	struct ip_options opt;
-	struct rtable *rt;
 	int res;
 
 	/* Recompile ip options since IPCB may not be valid anymore.
+	 * Also check we have a reasonable ipv4 header.
 	 */
-	memset(&opt, 0, sizeof(opt));
-	opt.optlen = ip_hdr(skb)->ihl*4 - sizeof(struct iphdr);
+	if (!pskb_network_may_pull(skb, sizeof(struct iphdr)) ||
+	    ip_hdr(skb)->version != 4 || ip_hdr(skb)->ihl < 5)
+		return;
 
-	rcu_read_lock();
-	res = __ip_options_compile(dev_net(skb->dev), &opt, skb, NULL);
-	rcu_read_unlock();
+	memset(&opt, 0, sizeof(opt));
+	if (ip_hdr(skb)->ihl > 5) {
+		if (!pskb_network_may_pull(skb, ip_hdr(skb)->ihl * 4))
+			return;
+		opt.optlen = ip_hdr(skb)->ihl * 4 - sizeof(struct iphdr);
 
-	if (res)
-		return;
+		rcu_read_lock();
+		res = __ip_options_compile(dev_net(skb->dev), &opt, skb, NULL);
+		rcu_read_unlock();
 
+		if (res)
+			return;
+	}
 	__icmp_send(skb, ICMP_DEST_UNREACH, ICMP_HOST_UNREACH, 0, &opt);
+}
+
+static void ipv4_link_failure(struct sk_buff *skb)
+{
+	struct rtable *rt;
+
+	ipv4_send_dest_unreach(skb);
 
 	rt = skb_rtable(skb);
 	if (rt)
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index d82e8344fc54..e8caab8e2f5c 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -45,6 +45,7 @@ static int tcp_syn_retries_min = 1;
 static int tcp_syn_retries_max = MAX_TCP_SYNCNT;
 static int ip_ping_group_range_min[] = { 0, 0 };
 static int ip_ping_group_range_max[] = { GID_T_MAX, GID_T_MAX };
+static int one_day_secs = 24 * 3600;
 
 /* obsolete */
 static int sysctl_tcp_low_latency __read_mostly;
@@ -552,7 +553,9 @@ static struct ctl_table ipv4_table[] = {
 		.data		= &sysctl_tcp_min_rtt_wlen,
 		.maxlen		= sizeof(int),
 		.mode		= 0644,
-		.proc_handler	= proc_dointvec
+		.proc_handler	= proc_dointvec_minmax,
+		.extra1		= &zero,
+		.extra2		= &one_day_secs
 	},
 	{
 		.procname	= "tcp_low_latency",
diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c
index 56dd5ce6274f..6d7608b88f66 100644
--- a/net/netfilter/ipvs/ip_vs_ctl.c
+++ b/net/netfilter/ipvs/ip_vs_ctl.c
@@ -889,12 +889,13 @@ ip_vs_new_dest(struct ip_vs_service *svc, struct ip_vs_dest_user_kern *udest,
 {
 	struct ip_vs_dest *dest;
 	unsigned int atype, i;
-	int ret = 0;
 
 	EnterFunction(2);
 
 #ifdef CONFIG_IP_VS_IPV6
 	if (udest->af == AF_INET6) {
+		int ret;
+
 		atype = ipv6_addr_type(&udest->addr.in6);
 		if ((!(atype & IPV6_ADDR_UNICAST) ||
 			atype & IPV6_ADDR_LINKLOCAL) &&
diff --git a/net/rds/ib_fmr.c b/net/rds/ib_fmr.c
index 86ef907067bb..353b59d3bd44 100644
--- a/net/rds/ib_fmr.c
+++ b/net/rds/ib_fmr.c
@@ -44,6 +44,17 @@ struct rds_ib_mr *rds_ib_alloc_fmr(struct rds_ib_device *rds_ibdev, int npages)
 	else
 		pool = rds_ibdev->mr_1m_pool;
 
+	if (atomic_read(&pool->dirty_count) >= pool->max_items / 10)
+		queue_delayed_work(rds_ib_mr_wq, &pool->flush_worker, 10);
+
+	/* Switch pools if one of the pool is reaching upper limit */
+	if (atomic_read(&pool->dirty_count) >=  pool->max_items * 9 / 10) {
+		if (pool->pool_type == RDS_IB_MR_8K_POOL)
+			pool = rds_ibdev->mr_1m_pool;
+		else
+			pool = rds_ibdev->mr_8k_pool;
+	}
+
 	ibmr = rds_ib_try_reuse_ibmr(pool);
 	if (ibmr)
 		return ibmr;
diff --git a/net/rds/ib_rdma.c b/net/rds/ib_rdma.c
index 9a3c54e659e9..fe5d2e8a95d9 100644
--- a/net/rds/ib_rdma.c
+++ b/net/rds/ib_rdma.c
@@ -442,9 +442,6 @@ struct rds_ib_mr *rds_ib_try_reuse_ibmr(struct rds_ib_mr_pool *pool)
 	struct rds_ib_mr *ibmr = NULL;
 	int iter = 0;
 
-	if (atomic_read(&pool->dirty_count) >= pool->max_items_soft / 10)
-		queue_delayed_work(rds_ib_mr_wq, &pool->flush_worker, 10);
-
 	while (1) {
 		ibmr = rds_ib_reuse_mr(pool);
 		if (ibmr)
diff --git a/net/rose/af_rose.c b/net/rose/af_rose.c
index 4a9729257023..6a5c4992cf61 100644
--- a/net/rose/af_rose.c
+++ b/net/rose/af_rose.c
@@ -318,9 +318,11 @@ void rose_destroy_socket(struct sock *);
 /*
  *	Handler for deferred kills.
  */
-static void rose_destroy_timer(unsigned long data)
+static void rose_destroy_timer(struct timer_list *t)
 {
-	rose_destroy_socket((struct sock *)data);
+	struct sock *sk = from_timer(sk, t, sk_timer);
+
+	rose_destroy_socket(sk);
 }
 
 /*
@@ -353,8 +355,7 @@ void rose_destroy_socket(struct sock *sk)
 
 	if (sk_has_allocations(sk)) {
 		/* Defer: outstanding buffers */
-		setup_timer(&sk->sk_timer, rose_destroy_timer,
-				(unsigned long)sk);
+		timer_setup(&sk->sk_timer, rose_destroy_timer, 0);
 		sk->sk_timer.expires  = jiffies + 10 * HZ;
 		add_timer(&sk->sk_timer);
 	} else
@@ -538,8 +539,8 @@ static int rose_create(struct net *net, struct socket *sock, int protocol,
 	sock->ops    = &rose_proto_ops;
 	sk->sk_protocol = protocol;
 
-	init_timer(&rose->timer);
-	init_timer(&rose->idletimer);
+	timer_setup(&rose->timer, NULL, 0);
+	timer_setup(&rose->idletimer, NULL, 0);
 
 	rose->t1   = msecs_to_jiffies(sysctl_rose_call_request_timeout);
 	rose->t2   = msecs_to_jiffies(sysctl_rose_reset_request_timeout);
@@ -582,8 +583,8 @@ static struct sock *rose_make_new(struct sock *osk)
 	sk->sk_state    = TCP_ESTABLISHED;
 	sock_copy_flags(sk, osk);
 
-	init_timer(&rose->timer);
-	init_timer(&rose->idletimer);
+	timer_setup(&rose->timer, NULL, 0);
+	timer_setup(&rose->idletimer, NULL, 0);
 
 	orose		= rose_sk(osk);
 	rose->t1	= orose->t1;
diff --git a/net/rose/rose_link.c b/net/rose/rose_link.c
index c76638cc2cd5..cda4c6678ef1 100644
--- a/net/rose/rose_link.c
+++ b/net/rose/rose_link.c
@@ -27,8 +27,8 @@
 #include <linux/interrupt.h>
 #include <net/rose.h>
 
-static void rose_ftimer_expiry(unsigned long);
-static void rose_t0timer_expiry(unsigned long);
+static void rose_ftimer_expiry(struct timer_list *);
+static void rose_t0timer_expiry(struct timer_list *);
 
 static void rose_transmit_restart_confirmation(struct rose_neigh *neigh);
 static void rose_transmit_restart_request(struct rose_neigh *neigh);
@@ -37,8 +37,7 @@ void rose_start_ftimer(struct rose_neigh *neigh)
 {
 	del_timer(&neigh->ftimer);
 
-	neigh->ftimer.data     = (unsigned long)neigh;
-	neigh->ftimer.function = &rose_ftimer_expiry;
+	neigh->ftimer.function = (TIMER_FUNC_TYPE)rose_ftimer_expiry;
 	neigh->ftimer.expires  =
 		jiffies + msecs_to_jiffies(sysctl_rose_link_fail_timeout);
 
@@ -49,8 +48,7 @@ static void rose_start_t0timer(struct rose_neigh *neigh)
 {
 	del_timer(&neigh->t0timer);
 
-	neigh->t0timer.data     = (unsigned long)neigh;
-	neigh->t0timer.function = &rose_t0timer_expiry;
+	neigh->t0timer.function = (TIMER_FUNC_TYPE)rose_t0timer_expiry;
 	neigh->t0timer.expires  =
 		jiffies + msecs_to_jiffies(sysctl_rose_restart_request_timeout);
 
@@ -77,13 +75,13 @@ static int rose_t0timer_running(struct rose_neigh *neigh)
 	return timer_pending(&neigh->t0timer);
 }
 
-static void rose_ftimer_expiry(unsigned long param)
+static void rose_ftimer_expiry(struct timer_list *t)
 {
 }
 
-static void rose_t0timer_expiry(unsigned long param)
+static void rose_t0timer_expiry(struct timer_list *t)
 {
-	struct rose_neigh *neigh = (struct rose_neigh *)param;
+	struct rose_neigh *neigh = from_timer(neigh, t, t0timer);
 
 	rose_transmit_restart_request(neigh);
 
diff --git a/net/rose/rose_loopback.c b/net/rose/rose_loopback.c
index 344456206b70..094a6621f8e8 100644
--- a/net/rose/rose_loopback.c
+++ b/net/rose/rose_loopback.c
@@ -16,15 +16,17 @@
 #include <linux/init.h>
 
 static struct sk_buff_head loopback_queue;
+#define ROSE_LOOPBACK_LIMIT 1000
 static struct timer_list loopback_timer;
 
 static void rose_set_loopback_timer(void);
+static void rose_loopback_timer(struct timer_list *unused);
 
 void rose_loopback_init(void)
 {
 	skb_queue_head_init(&loopback_queue);
 
-	init_timer(&loopback_timer);
+	timer_setup(&loopback_timer, rose_loopback_timer, 0);
 }
 
 static int rose_loopback_running(void)
@@ -34,36 +36,30 @@ static int rose_loopback_running(void)
 
 int rose_loopback_queue(struct sk_buff *skb, struct rose_neigh *neigh)
 {
-	struct sk_buff *skbn;
+	struct sk_buff *skbn = NULL;
 
-	skbn = skb_clone(skb, GFP_ATOMIC);
+	if (skb_queue_len(&loopback_queue) < ROSE_LOOPBACK_LIMIT)
+		skbn = skb_clone(skb, GFP_ATOMIC);
 
-	kfree_skb(skb);
-
-	if (skbn != NULL) {
+	if (skbn) {
+		consume_skb(skb);
 		skb_queue_tail(&loopback_queue, skbn);
 
 		if (!rose_loopback_running())
 			rose_set_loopback_timer();
+	} else {
+		kfree_skb(skb);
 	}
 
 	return 1;
 }
 
-static void rose_loopback_timer(unsigned long);
-
 static void rose_set_loopback_timer(void)
 {
-	del_timer(&loopback_timer);
-
-	loopback_timer.data     = 0;
-	loopback_timer.function = &rose_loopback_timer;
-	loopback_timer.expires  = jiffies + 10;
-
-	add_timer(&loopback_timer);
+	mod_timer(&loopback_timer, jiffies + 10);
 }
 
-static void rose_loopback_timer(unsigned long param)
+static void rose_loopback_timer(struct timer_list *unused)
 {
 	struct sk_buff *skb;
 	struct net_device *dev;
@@ -71,8 +67,12 @@ static void rose_loopback_timer(unsigned long param)
 	struct sock *sk;
 	unsigned short frametype;
 	unsigned int lci_i, lci_o;
+	int count;
 
-	while ((skb = skb_dequeue(&loopback_queue)) != NULL) {
+	for (count = 0; count < ROSE_LOOPBACK_LIMIT; count++) {
+		skb = skb_dequeue(&loopback_queue);
+		if (!skb)
+			return;
 		if (skb->len < ROSE_MIN_LEN) {
 			kfree_skb(skb);
 			continue;
@@ -109,6 +109,8 @@ static void rose_loopback_timer(unsigned long param)
 			kfree_skb(skb);
 		}
 	}
+	if (!skb_queue_empty(&loopback_queue))
+		mod_timer(&loopback_timer, jiffies + 1);
 }
 
 void __exit rose_loopback_clear(void)
diff --git a/net/rose/rose_route.c b/net/rose/rose_route.c
index 2741abec7ee7..d94d6110bb1c 100644
--- a/net/rose/rose_route.c
+++ b/net/rose/rose_route.c
@@ -104,8 +104,8 @@ static int __must_check rose_add_node(struct rose_route_struct *rose_route,
 
 		skb_queue_head_init(&rose_neigh->queue);
 
-		init_timer(&rose_neigh->ftimer);
-		init_timer(&rose_neigh->t0timer);
+		timer_setup(&rose_neigh->ftimer, NULL, 0);
+		timer_setup(&rose_neigh->t0timer, NULL, 0);
 
 		if (rose_route->ndigis != 0) {
 			rose_neigh->digipeat =
@@ -390,8 +390,8 @@ void rose_add_loopback_neigh(void)
 
 	skb_queue_head_init(&sn->queue);
 
-	init_timer(&sn->ftimer);
-	init_timer(&sn->t0timer);
+	timer_setup(&sn->ftimer, NULL, 0);
+	timer_setup(&sn->t0timer, NULL, 0);
 
 	spin_lock_bh(&rose_neigh_list_lock);
 	sn->next = rose_neigh_list;
diff --git a/net/rose/rose_timer.c b/net/rose/rose_timer.c
index bc5469d6d9cb..3b89d66f15bb 100644
--- a/net/rose/rose_timer.c
+++ b/net/rose/rose_timer.c
@@ -29,8 +29,8 @@
 #include <net/rose.h>
 
 static void rose_heartbeat_expiry(unsigned long);
-static void rose_timer_expiry(unsigned long);
-static void rose_idletimer_expiry(unsigned long);
+static void rose_timer_expiry(struct timer_list *);
+static void rose_idletimer_expiry(struct timer_list *);
 
 void rose_start_heartbeat(struct sock *sk)
 {
@@ -49,8 +49,7 @@ void rose_start_t1timer(struct sock *sk)
 
 	del_timer(&rose->timer);
 
-	rose->timer.data     = (unsigned long)sk;
-	rose->timer.function = &rose_timer_expiry;
+	rose->timer.function = (TIMER_FUNC_TYPE)rose_timer_expiry;
 	rose->timer.expires  = jiffies + rose->t1;
 
 	add_timer(&rose->timer);
@@ -62,8 +61,7 @@ void rose_start_t2timer(struct sock *sk)
 
 	del_timer(&rose->timer);
 
-	rose->timer.data     = (unsigned long)sk;
-	rose->timer.function = &rose_timer_expiry;
+	rose->timer.function = (TIMER_FUNC_TYPE)rose_timer_expiry;
 	rose->timer.expires  = jiffies + rose->t2;
 
 	add_timer(&rose->timer);
@@ -75,8 +73,7 @@ void rose_start_t3timer(struct sock *sk)
 
 	del_timer(&rose->timer);
 
-	rose->timer.data     = (unsigned long)sk;
-	rose->timer.function = &rose_timer_expiry;
+	rose->timer.function = (TIMER_FUNC_TYPE)rose_timer_expiry;
 	rose->timer.expires  = jiffies + rose->t3;
 
 	add_timer(&rose->timer);
@@ -88,8 +85,7 @@ void rose_start_hbtimer(struct sock *sk)
 
 	del_timer(&rose->timer);
 
-	rose->timer.data     = (unsigned long)sk;
-	rose->timer.function = &rose_timer_expiry;
+	rose->timer.function = (TIMER_FUNC_TYPE)rose_timer_expiry;
 	rose->timer.expires  = jiffies + rose->hb;
 
 	add_timer(&rose->timer);
@@ -102,8 +98,7 @@ void rose_start_idletimer(struct sock *sk)
 	del_timer(&rose->idletimer);
 
 	if (rose->idle > 0) {
-		rose->idletimer.data     = (unsigned long)sk;
-		rose->idletimer.function = &rose_idletimer_expiry;
+		rose->idletimer.function = (TIMER_FUNC_TYPE)rose_idletimer_expiry;
 		rose->idletimer.expires  = jiffies + rose->idle;
 
 		add_timer(&rose->idletimer);
@@ -163,10 +158,10 @@ static void rose_heartbeat_expiry(unsigned long param)
 	bh_unlock_sock(sk);
 }
 
-static void rose_timer_expiry(unsigned long param)
+static void rose_timer_expiry(struct timer_list *t)
 {
-	struct sock *sk = (struct sock *)param;
-	struct rose_sock *rose = rose_sk(sk);
+	struct rose_sock *rose = from_timer(rose, t, timer);
+	struct sock *sk = &rose->sock;
 
 	bh_lock_sock(sk);
 	switch (rose->state) {
@@ -192,9 +187,10 @@ static void rose_timer_expiry(unsigned long param)
 	bh_unlock_sock(sk);
 }
 
-static void rose_idletimer_expiry(unsigned long param)
+static void rose_idletimer_expiry(struct timer_list *t)
 {
-	struct sock *sk = (struct sock *)param;
+	struct rose_sock *rose = from_timer(rose, t, idletimer);
+	struct sock *sk = &rose->sock;
 
 	bh_lock_sock(sk);
 	rose_clear_queues(sk);
diff --git a/net/sunrpc/cache.c b/net/sunrpc/cache.c
index f2cf4edf219b..475b453dc7ae 100644
--- a/net/sunrpc/cache.c
+++ b/net/sunrpc/cache.c
@@ -54,6 +54,7 @@ static void cache_init(struct cache_head *h, struct cache_detail *detail)
 	h->last_refresh = now;
 }
 
+static inline int cache_is_valid(struct cache_head *h);
 static void cache_fresh_locked(struct cache_head *head, time_t expiry,
 				struct cache_detail *detail);
 static void cache_fresh_unlocked(struct cache_head *head,
@@ -100,6 +101,8 @@ struct cache_head *sunrpc_cache_lookup(struct cache_detail *detail,
 			if (cache_is_expired(detail, tmp)) {
 				hlist_del_init(&tmp->cache_list);
 				detail->entries --;
+				if (cache_is_valid(tmp) == -EAGAIN)
+					set_bit(CACHE_NEGATIVE, &tmp->flags);
 				cache_fresh_locked(tmp, 0, detail);
 				freeme = tmp;
 				break;
diff --git a/net/tipc/netlink_compat.c b/net/tipc/netlink_compat.c
index 73895daf8943..aa75bc8b158f 100644
--- a/net/tipc/netlink_compat.c
+++ b/net/tipc/netlink_compat.c
@@ -262,8 +262,14 @@ static int tipc_nl_compat_dumpit(struct tipc_nl_compat_cmd_dump *cmd,
 	if (msg->rep_type)
 		tipc_tlv_init(msg->rep, msg->rep_type);
 
-	if (cmd->header)
-		(*cmd->header)(msg);
+	if (cmd->header) {
+		err = (*cmd->header)(msg);
+		if (err) {
+			kfree_skb(msg->rep);
+			msg->rep = NULL;
+			return err;
+		}
+	}
 
 	arg = nlmsg_new(0, GFP_KERNEL);
 	if (!arg) {
@@ -388,7 +394,12 @@ static int tipc_nl_compat_bearer_enable(struct tipc_nl_compat_cmd_doit *cmd,
 	if (!bearer)
 		return -EMSGSIZE;
 
-	len = min_t(int, TLV_GET_DATA_LEN(msg->req), TIPC_MAX_BEARER_NAME);
+	len = TLV_GET_DATA_LEN(msg->req);
+	len -= offsetof(struct tipc_bearer_config, name);
+	if (len <= 0)
+		return -EINVAL;
+
+	len = min_t(int, len, TIPC_MAX_BEARER_NAME);
 	if (!string_is_valid(b->name, len))
 		return -EINVAL;
 
@@ -757,7 +768,12 @@ static int tipc_nl_compat_link_set(struct tipc_nl_compat_cmd_doit *cmd,
 
 	lc = (struct tipc_link_config *)TLV_DATA(msg->req);
 
-	len = min_t(int, TLV_GET_DATA_LEN(msg->req), TIPC_MAX_LINK_NAME);
+	len = TLV_GET_DATA_LEN(msg->req);
+	len -= offsetof(struct tipc_link_config, name);
+	if (len <= 0)
+		return -EINVAL;
+
+	len = min_t(int, len, TIPC_MAX_LINK_NAME);
 	if (!string_is_valid(lc->name, len))
 		return -EINVAL;
 
diff --git a/net/vmw_vsock/virtio_transport_common.c b/net/vmw_vsock/virtio_transport_common.c
index edba7ab97563..40a8731c663b 100644
--- a/net/vmw_vsock/virtio_transport_common.c
+++ b/net/vmw_vsock/virtio_transport_common.c
@@ -662,6 +662,8 @@ static int virtio_transport_reset(struct vsock_sock *vsk,
  */
 static int virtio_transport_reset_no_sock(struct virtio_vsock_pkt *pkt)
 {
+	const struct virtio_transport *t;
+	struct virtio_vsock_pkt *reply;
 	struct virtio_vsock_pkt_info info = {
 		.op = VIRTIO_VSOCK_OP_RST,
 		.type = le16_to_cpu(pkt->hdr.type),
@@ -672,15 +674,21 @@ static int virtio_transport_reset_no_sock(struct virtio_vsock_pkt *pkt)
 	if (le16_to_cpu(pkt->hdr.op) == VIRTIO_VSOCK_OP_RST)
 		return 0;
 
-	pkt = virtio_transport_alloc_pkt(&info, 0,
-					 le64_to_cpu(pkt->hdr.dst_cid),
-					 le32_to_cpu(pkt->hdr.dst_port),
-					 le64_to_cpu(pkt->hdr.src_cid),
-					 le32_to_cpu(pkt->hdr.src_port));
-	if (!pkt)
+	reply = virtio_transport_alloc_pkt(&info, 0,
+					   le64_to_cpu(pkt->hdr.dst_cid),
+					   le32_to_cpu(pkt->hdr.dst_port),
+					   le64_to_cpu(pkt->hdr.src_cid),
+					   le32_to_cpu(pkt->hdr.src_port));
+	if (!reply)
 		return -ENOMEM;
 
-	return virtio_transport_get_ops()->send_pkt(pkt);
+	t = virtio_transport_get_ops();
+	if (!t) {
+		virtio_transport_free_pkt(reply);
+		return -ENOTCONN;
+	}
+
+	return t->send_pkt(reply);
 }
 
 static void virtio_transport_wait_close(struct sock *sk, long timeout)
diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include
index a0ad87e869f9..a33fa1a91873 100644
--- a/scripts/Kbuild.include
+++ b/scripts/Kbuild.include
@@ -165,9 +165,7 @@ cc-ldoption = $(call try-run,\
 
 # ld-option
 # Usage: LDFLAGS += $(call ld-option, -X)
-ld-option = $(call try-run,\
-	$(CC) $(KBUILD_CPPFLAGS) $(CC_OPTION_CFLAGS) -x c /dev/null -c -o "$$TMPO"; \
-	$(LD) $(LDFLAGS) $(1) "$$TMPO" -o "$$TMP",$(1),$(2))
+ld-option = $(call try-run, $(LD) $(LDFLAGS) $(1) -v,$(1),$(2))
 
 # ar-option
 # Usage: KBUILD_ARFLAGS := $(call ar-option,D)