diff --git a/Makefile b/Makefile
index e1a94c8d278e..450ebe152806 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 VERSION = 5
 PATCHLEVEL = 4
-SUBLEVEL = 86
+SUBLEVEL = 88
 EXTRAVERSION =
 NAME = Kleptomaniac Octopus
 
diff --git a/arch/powerpc/include/asm/bitops.h b/arch/powerpc/include/asm/bitops.h
index 603aed229af7..46338f236004 100644
--- a/arch/powerpc/include/asm/bitops.h
+++ b/arch/powerpc/include/asm/bitops.h
@@ -217,15 +217,34 @@ static __inline__ void __clear_bit_unlock(int nr, volatile unsigned long *addr)
  */
 static __inline__ int fls(unsigned int x)
 {
-	return 32 - __builtin_clz(x);
+	int lz;
+
+	if (__builtin_constant_p(x))
+		return x ? 32 - __builtin_clz(x) : 0;
+	asm("cntlzw %0,%1" : "=r" (lz) : "r" (x));
+	return 32 - lz;
 }
 
 #include <asm-generic/bitops/builtin-__fls.h>
 
+/*
+ * 64-bit can do this using one cntlzd (count leading zeroes doubleword)
+ * instruction; for 32-bit we use the generic version, which does two
+ * 32-bit fls calls.
+ */
+#ifdef CONFIG_PPC64
 static __inline__ int fls64(__u64 x)
 {
-	return 64 - __builtin_clzll(x);
+	int lz;
+
+	if (__builtin_constant_p(x))
+		return x ? 64 - __builtin_clzll(x) : 0;
+	asm("cntlzd %0,%1" : "=r" (lz) : "r" (x));
+	return 64 - lz;
 }
+#else
+#include <asm-generic/bitops/fls64.h>
+#endif
 
 #ifdef CONFIG_PPC64
 unsigned int __arch_hweight8(unsigned int w);
diff --git a/arch/powerpc/sysdev/mpic_msgr.c b/arch/powerpc/sysdev/mpic_msgr.c
index f6b253e2be40..36ec0bdd8b63 100644
--- a/arch/powerpc/sysdev/mpic_msgr.c
+++ b/arch/powerpc/sysdev/mpic_msgr.c
@@ -191,7 +191,7 @@ static int mpic_msgr_probe(struct platform_device *dev)
 
 	/* IO map the message register block. */
 	of_address_to_resource(np, 0, &rsrc);
-	msgr_block_addr = ioremap(rsrc.start, resource_size(&rsrc));
+	msgr_block_addr = devm_ioremap(&dev->dev, rsrc.start, resource_size(&rsrc));
 	if (!msgr_block_addr) {
 		dev_err(&dev->dev, "Failed to iomap MPIC message registers");
 		return -EFAULT;
diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index 0f5d0a699a49..4e59ab817d3e 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -47,18 +47,25 @@
 /* Max request size is determined by sector mask - 32K */
 #define UBD_MAX_REQUEST (8 * sizeof(long))
 
+struct io_desc {
+	char *buffer;
+	unsigned long length;
+	unsigned long sector_mask;
+	unsigned long long cow_offset;
+	unsigned long bitmap_words[2];
+};
+
 struct io_thread_req {
 	struct request *req;
 	int fds[2];
 	unsigned long offsets[2];
 	unsigned long long offset;
-	unsigned long length;
-	char *buffer;
 	int sectorsize;
-	unsigned long sector_mask;
-	unsigned long long cow_offset;
-	unsigned long bitmap_words[2];
 	int error;
+
+	int desc_cnt;
+	/* io_desc has to be the last element of the struct */
+	struct io_desc io_desc[];
 };
 
 
@@ -524,12 +531,7 @@ static void ubd_handler(void)
 				blk_queue_max_write_zeroes_sectors(io_req->req->q, 0);
 				blk_queue_flag_clear(QUEUE_FLAG_DISCARD, io_req->req->q);
 			}
-			if ((io_req->error) || (io_req->buffer == NULL))
-				blk_mq_end_request(io_req->req, io_req->error);
-			else {
-				if (!blk_update_request(io_req->req, io_req->error, io_req->length))
-					__blk_mq_end_request(io_req->req, io_req->error);
-			}
+			blk_mq_end_request(io_req->req, io_req->error);
 			kfree(io_req);
 		}
 	}
@@ -945,6 +947,7 @@ static int ubd_add(int n, char **error_out)
 	blk_queue_write_cache(ubd_dev->queue, true, false);
 
 	blk_queue_max_segments(ubd_dev->queue, MAX_SG);
+	blk_queue_segment_boundary(ubd_dev->queue, PAGE_SIZE - 1);
 	err = ubd_disk_register(UBD_MAJOR, ubd_dev->size, n, &ubd_gendisk[n]);
 	if(err){
 		*error_out = "Failed to register device";
@@ -1288,37 +1291,74 @@ static void cowify_bitmap(__u64 io_offset, int length, unsigned long *cow_mask,
 	*cow_offset += bitmap_offset;
 }
 
-static void cowify_req(struct io_thread_req *req, unsigned long *bitmap,
+static void cowify_req(struct io_thread_req *req, struct io_desc *segment,
+		       unsigned long offset, unsigned long *bitmap,
 		       __u64 bitmap_offset, __u64 bitmap_len)
 {
-	__u64 sector = req->offset >> SECTOR_SHIFT;
+	__u64 sector = offset >> SECTOR_SHIFT;
 	int i;
 
-	if (req->length > (sizeof(req->sector_mask) * 8) << SECTOR_SHIFT)
+	if (segment->length > (sizeof(segment->sector_mask) * 8) << SECTOR_SHIFT)
 		panic("Operation too long");
 
 	if (req_op(req->req) == REQ_OP_READ) {
-		for (i = 0; i < req->length >> SECTOR_SHIFT; i++) {
+		for (i = 0; i < segment->length >> SECTOR_SHIFT; i++) {
 			if(ubd_test_bit(sector + i, (unsigned char *) bitmap))
 				ubd_set_bit(i, (unsigned char *)
-					    &req->sector_mask);
+					    &segment->sector_mask);
 		}
+	} else {
+		cowify_bitmap(offset, segment->length, &segment->sector_mask,
+			      &segment->cow_offset, bitmap, bitmap_offset,
+			      segment->bitmap_words, bitmap_len);
 	}
-	else cowify_bitmap(req->offset, req->length, &req->sector_mask,
-			   &req->cow_offset, bitmap, bitmap_offset,
-			   req->bitmap_words, bitmap_len);
 }
 
-static int ubd_queue_one_vec(struct blk_mq_hw_ctx *hctx, struct request *req,
-		u64 off, struct bio_vec *bvec)
+static void ubd_map_req(struct ubd *dev, struct io_thread_req *io_req,
+			struct request *req)
 {
-	struct ubd *dev = hctx->queue->queuedata;
-	struct io_thread_req *io_req;
-	int ret;
+	struct bio_vec bvec;
+	struct req_iterator iter;
+	int i = 0;
+	unsigned long byte_offset = io_req->offset;
+	int op = req_op(req);
 
-	io_req = kmalloc(sizeof(struct io_thread_req), GFP_ATOMIC);
+	if (op == REQ_OP_WRITE_ZEROES || op == REQ_OP_DISCARD) {
+		io_req->io_desc[0].buffer = NULL;
+		io_req->io_desc[0].length = blk_rq_bytes(req);
+	} else {
+		rq_for_each_segment(bvec, req, iter) {
+			BUG_ON(i >= io_req->desc_cnt);
+
+			io_req->io_desc[i].buffer =
+				page_address(bvec.bv_page) + bvec.bv_offset;
+			io_req->io_desc[i].length = bvec.bv_len;
+			i++;
+		}
+	}
+
+	if (dev->cow.file) {
+		for (i = 0; i < io_req->desc_cnt; i++) {
+			cowify_req(io_req, &io_req->io_desc[i], byte_offset,
+				   dev->cow.bitmap, dev->cow.bitmap_offset,
+				   dev->cow.bitmap_len);
+			byte_offset += io_req->io_desc[i].length;
+		}
+
+	}
+}
+
+static struct io_thread_req *ubd_alloc_req(struct ubd *dev, struct request *req,
+					   int desc_cnt)
+{
+	struct io_thread_req *io_req;
+	int i;
+
+	io_req = kmalloc(sizeof(*io_req) +
+			 (desc_cnt * sizeof(struct io_desc)),
+			 GFP_ATOMIC);
 	if (!io_req)
-		return -ENOMEM;
+		return NULL;
 
 	io_req->req = req;
 	if (dev->cow.file)
@@ -1326,26 +1366,41 @@ static int ubd_queue_one_vec(struct blk_mq_hw_ctx *hctx, struct request *req,
 	else
 		io_req->fds[0] = dev->fd;
 	io_req->error = 0;
-
-	if (bvec != NULL) {
-		io_req->buffer = page_address(bvec->bv_page) + bvec->bv_offset;
-		io_req->length = bvec->bv_len;
-	} else {
-		io_req->buffer = NULL;
-		io_req->length = blk_rq_bytes(req);
-	}
-
 	io_req->sectorsize = SECTOR_SIZE;
 	io_req->fds[1] = dev->fd;
-	io_req->cow_offset = -1;
-	io_req->offset = off;
-	io_req->sector_mask = 0;
+	io_req->offset = (u64) blk_rq_pos(req) << SECTOR_SHIFT;
 	io_req->offsets[0] = 0;
 	io_req->offsets[1] = dev->cow.data_offset;
 
-	if (dev->cow.file)
-		cowify_req(io_req, dev->cow.bitmap,
-			   dev->cow.bitmap_offset, dev->cow.bitmap_len);
+	for (i = 0 ; i < desc_cnt; i++) {
+		io_req->io_desc[i].sector_mask = 0;
+		io_req->io_desc[i].cow_offset = -1;
+	}
+
+	return io_req;
+}
+
+static int ubd_submit_request(struct ubd *dev, struct request *req)
+{
+	int segs = 0;
+	struct io_thread_req *io_req;
+	int ret;
+	int op = req_op(req);
+
+	if (op == REQ_OP_FLUSH)
+		segs = 0;
+	else if (op == REQ_OP_WRITE_ZEROES || op == REQ_OP_DISCARD)
+		segs = 1;
+	else
+		segs = blk_rq_nr_phys_segments(req);
+
+	io_req = ubd_alloc_req(dev, req, segs);
+	if (!io_req)
+		return -ENOMEM;
+
+	io_req->desc_cnt = segs;
+	if (segs)
+		ubd_map_req(dev, io_req, req);
 
 	ret = os_write_file(thread_fd, &io_req, sizeof(io_req));
 	if (ret != sizeof(io_req)) {
@@ -1356,22 +1411,6 @@ static int ubd_queue_one_vec(struct blk_mq_hw_ctx *hctx, struct request *req,
 	return ret;
 }
 
-static int queue_rw_req(struct blk_mq_hw_ctx *hctx, struct request *req)
-{
-	struct req_iterator iter;
-	struct bio_vec bvec;
-	int ret;
-	u64 off = (u64)blk_rq_pos(req) << SECTOR_SHIFT;
-
-	rq_for_each_segment(bvec, req, iter) {
-		ret = ubd_queue_one_vec(hctx, req, off, &bvec);
-		if (ret < 0)
-			return ret;
-		off += bvec.bv_len;
-	}
-	return 0;
-}
-
 static blk_status_t ubd_queue_rq(struct blk_mq_hw_ctx *hctx,
 				 const struct blk_mq_queue_data *bd)
 {
@@ -1384,17 +1423,12 @@ static blk_status_t ubd_queue_rq(struct blk_mq_hw_ctx *hctx,
 	spin_lock_irq(&ubd_dev->lock);
 
 	switch (req_op(req)) {
-	/* operations with no lentgth/offset arguments */
 	case REQ_OP_FLUSH:
-		ret = ubd_queue_one_vec(hctx, req, 0, NULL);
-		break;
 	case REQ_OP_READ:
 	case REQ_OP_WRITE:
-		ret = queue_rw_req(hctx, req);
-		break;
 	case REQ_OP_DISCARD:
 	case REQ_OP_WRITE_ZEROES:
-		ret = ubd_queue_one_vec(hctx, req, (u64)blk_rq_pos(req) << 9, NULL);
+		ret = ubd_submit_request(ubd_dev, req);
 		break;
 	default:
 		WARN_ON_ONCE(1);
@@ -1482,22 +1516,22 @@ static int map_error(int error_code)
  * will result in unpredictable behaviour and/or crashes.
  */
 
-static int update_bitmap(struct io_thread_req *req)
+static int update_bitmap(struct io_thread_req *req, struct io_desc *segment)
 {
 	int n;
 
-	if(req->cow_offset == -1)
+	if (segment->cow_offset == -1)
 		return map_error(0);
 
-	n = os_pwrite_file(req->fds[1], &req->bitmap_words,
-			  sizeof(req->bitmap_words), req->cow_offset);
-	if (n != sizeof(req->bitmap_words))
+	n = os_pwrite_file(req->fds[1], &segment->bitmap_words,
+			  sizeof(segment->bitmap_words), segment->cow_offset);
+	if (n != sizeof(segment->bitmap_words))
 		return map_error(-n);
 
 	return map_error(0);
 }
 
-static void do_io(struct io_thread_req *req)
+static void do_io(struct io_thread_req *req, struct io_desc *desc)
 {
 	char *buf = NULL;
 	unsigned long len;
@@ -1512,21 +1546,20 @@ static void do_io(struct io_thread_req *req)
 		return;
 	}
 
-	nsectors = req->length / req->sectorsize;
+	nsectors = desc->length / req->sectorsize;
 	start = 0;
 	do {
-		bit = ubd_test_bit(start, (unsigned char *) &req->sector_mask);
+		bit = ubd_test_bit(start, (unsigned char *) &desc->sector_mask);
 		end = start;
 		while((end < nsectors) &&
-		      (ubd_test_bit(end, (unsigned char *)
-				    &req->sector_mask) == bit))
+		      (ubd_test_bit(end, (unsigned char *) &desc->sector_mask) == bit))
 			end++;
 
 		off = req->offset + req->offsets[bit] +
 			start * req->sectorsize;
 		len = (end - start) * req->sectorsize;
-		if (req->buffer != NULL)
-			buf = &req->buffer[start * req->sectorsize];
+		if (desc->buffer != NULL)
+			buf = &desc->buffer[start * req->sectorsize];
 
 		switch (req_op(req->req)) {
 		case REQ_OP_READ:
@@ -1566,7 +1599,8 @@ static void do_io(struct io_thread_req *req)
 		start = end;
 	} while(start < nsectors);
 
-	req->error = update_bitmap(req);
+	req->offset += len;
+	req->error = update_bitmap(req, desc);
 }
 
 /* Changed in start_io_thread, which is serialized by being called only
@@ -1599,8 +1633,13 @@ int io_thread(void *arg)
 		}
 
 		for (count = 0; count < n/sizeof(struct io_thread_req *); count++) {
+			struct io_thread_req *req = (*io_req_buffer)[count];
+			int i;
+
 			io_count++;
-			do_io((*io_req_buffer)[count]);
+			for (i = 0; !req->error && i < req->desc_cnt; i++)
+				do_io(req, &(req->io_desc[i]));
+
 		}
 
 		written = 0;
diff --git a/arch/x86/kvm/cpuid.h b/arch/x86/kvm/cpuid.h
index d78a61408243..7dec43b2c420 100644
--- a/arch/x86/kvm/cpuid.h
+++ b/arch/x86/kvm/cpuid.h
@@ -154,6 +154,20 @@ static inline int guest_cpuid_stepping(struct kvm_vcpu *vcpu)
 	return x86_stepping(best->eax);
 }
 
+static inline bool guest_has_spec_ctrl_msr(struct kvm_vcpu *vcpu)
+{
+	return (guest_cpuid_has(vcpu, X86_FEATURE_SPEC_CTRL) ||
+		guest_cpuid_has(vcpu, X86_FEATURE_AMD_STIBP) ||
+		guest_cpuid_has(vcpu, X86_FEATURE_AMD_IBRS) ||
+		guest_cpuid_has(vcpu, X86_FEATURE_AMD_SSBD));
+}
+
+static inline bool guest_has_pred_cmd_msr(struct kvm_vcpu *vcpu)
+{
+	return (guest_cpuid_has(vcpu, X86_FEATURE_SPEC_CTRL) ||
+		guest_cpuid_has(vcpu, X86_FEATURE_AMD_IBPB));
+}
+
 static inline bool supports_cpuid_fault(struct kvm_vcpu *vcpu)
 {
 	return vcpu->arch.msr_platform_info & MSR_PLATFORM_INFO_CPUID_FAULT;
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index c79c1a07f44b..2b506904be02 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -4233,8 +4233,7 @@ static int svm_get_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
 		break;
 	case MSR_IA32_SPEC_CTRL:
 		if (!msr_info->host_initiated &&
-		    !guest_cpuid_has(vcpu, X86_FEATURE_AMD_IBRS) &&
-		    !guest_cpuid_has(vcpu, X86_FEATURE_AMD_SSBD))
+		    !guest_has_spec_ctrl_msr(vcpu))
 			return 1;
 
 		msr_info->data = svm->spec_ctrl;
@@ -4318,16 +4317,13 @@ static int svm_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr)
 		break;
 	case MSR_IA32_SPEC_CTRL:
 		if (!msr->host_initiated &&
-		    !guest_cpuid_has(vcpu, X86_FEATURE_AMD_IBRS) &&
-		    !guest_cpuid_has(vcpu, X86_FEATURE_AMD_SSBD))
+		    !guest_has_spec_ctrl_msr(vcpu))
 			return 1;
 
-		/* The STIBP bit doesn't fault even if it's not advertised */
-		if (data & ~(SPEC_CTRL_IBRS | SPEC_CTRL_STIBP | SPEC_CTRL_SSBD))
+		if (data & ~kvm_spec_ctrl_valid_bits(vcpu))
 			return 1;
 
 		svm->spec_ctrl = data;
-
 		if (!data)
 			break;
 
@@ -4346,18 +4342,17 @@ static int svm_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr)
 		break;
 	case MSR_IA32_PRED_CMD:
 		if (!msr->host_initiated &&
-		    !guest_cpuid_has(vcpu, X86_FEATURE_AMD_IBPB))
+		    !guest_has_pred_cmd_msr(vcpu))
 			return 1;
 
 		if (data & ~PRED_CMD_IBPB)
 			return 1;
-
+		if (!boot_cpu_has(X86_FEATURE_IBPB))
+			return 1;
 		if (!data)
 			break;
 
 		wrmsrl(MSR_IA32_PRED_CMD, PRED_CMD_IBPB);
-		if (is_guest_mode(vcpu))
-			break;
 		set_msr_interception(svm->msrpm, MSR_IA32_PRED_CMD, 0, 1);
 		break;
 	case MSR_AMD64_VIRT_SPEC_CTRL:
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 2a1ed3aae100..e7fd2f00edc1 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -1788,7 +1788,7 @@ static int vmx_get_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
 		break;
 	case MSR_IA32_SPEC_CTRL:
 		if (!msr_info->host_initiated &&
-		    !guest_cpuid_has(vcpu, X86_FEATURE_SPEC_CTRL))
+		    !guest_has_spec_ctrl_msr(vcpu))
 			return 1;
 
 		msr_info->data = to_vmx(vcpu)->spec_ctrl;
@@ -1971,15 +1971,13 @@ static int vmx_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
 		break;
 	case MSR_IA32_SPEC_CTRL:
 		if (!msr_info->host_initiated &&
-		    !guest_cpuid_has(vcpu, X86_FEATURE_SPEC_CTRL))
+		    !guest_has_spec_ctrl_msr(vcpu))
 			return 1;
 
-		/* The STIBP bit doesn't fault even if it's not advertised */
-		if (data & ~(SPEC_CTRL_IBRS | SPEC_CTRL_STIBP | SPEC_CTRL_SSBD))
+		if (data & ~kvm_spec_ctrl_valid_bits(vcpu))
 			return 1;
 
 		vmx->spec_ctrl = data;
-
 		if (!data)
 			break;
 
@@ -2001,12 +1999,13 @@ static int vmx_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
 		break;
 	case MSR_IA32_PRED_CMD:
 		if (!msr_info->host_initiated &&
-		    !guest_cpuid_has(vcpu, X86_FEATURE_SPEC_CTRL))
+		    !guest_has_pred_cmd_msr(vcpu))
 			return 1;
 
 		if (data & ~PRED_CMD_IBPB)
 			return 1;
-
+		if (!boot_cpu_has(X86_FEATURE_IBPB))
+			return 1;
 		if (!data)
 			break;
 
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index b7f86acb8c91..72990c3c6faf 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -10369,6 +10369,28 @@ bool kvm_arch_no_poll(struct kvm_vcpu *vcpu)
 }
 EXPORT_SYMBOL_GPL(kvm_arch_no_poll);
 
+u64 kvm_spec_ctrl_valid_bits(struct kvm_vcpu *vcpu)
+{
+	uint64_t bits = SPEC_CTRL_IBRS | SPEC_CTRL_STIBP | SPEC_CTRL_SSBD;
+
+	/* The STIBP bit doesn't fault even if it's not advertised */
+	if (!guest_cpuid_has(vcpu, X86_FEATURE_SPEC_CTRL) &&
+	    !guest_cpuid_has(vcpu, X86_FEATURE_AMD_IBRS))
+		bits &= ~(SPEC_CTRL_IBRS | SPEC_CTRL_STIBP);
+	if (!boot_cpu_has(X86_FEATURE_SPEC_CTRL) &&
+	    !boot_cpu_has(X86_FEATURE_AMD_IBRS))
+		bits &= ~(SPEC_CTRL_IBRS | SPEC_CTRL_STIBP);
+
+	if (!guest_cpuid_has(vcpu, X86_FEATURE_SPEC_CTRL_SSBD) &&
+	    !guest_cpuid_has(vcpu, X86_FEATURE_AMD_SSBD))
+		bits &= ~SPEC_CTRL_SSBD;
+	if (!boot_cpu_has(X86_FEATURE_SPEC_CTRL_SSBD) &&
+	    !boot_cpu_has(X86_FEATURE_AMD_SSBD))
+		bits &= ~SPEC_CTRL_SSBD;
+
+	return bits;
+}
+EXPORT_SYMBOL_GPL(kvm_spec_ctrl_valid_bits);
 
 EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_exit);
 EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_fast_mmio);
diff --git a/arch/x86/kvm/x86.h b/arch/x86/kvm/x86.h
index de6b55484876..301286d92432 100644
--- a/arch/x86/kvm/x86.h
+++ b/arch/x86/kvm/x86.h
@@ -368,5 +368,6 @@ static inline bool kvm_pat_valid(u64 data)
 
 void kvm_load_guest_xcr0(struct kvm_vcpu *vcpu);
 void kvm_put_guest_xcr0(struct kvm_vcpu *vcpu);
+u64 kvm_spec_ctrl_valid_bits(struct kvm_vcpu *vcpu);
 
 #endif
diff --git a/block/blk-pm.c b/block/blk-pm.c
index 1adc1cd748b4..2ccf88dbaa40 100644
--- a/block/blk-pm.c
+++ b/block/blk-pm.c
@@ -67,6 +67,10 @@ int blk_pre_runtime_suspend(struct request_queue *q)
 
 	WARN_ON_ONCE(q->rpm_status != RPM_ACTIVE);
 
+	spin_lock_irq(&q->queue_lock);
+	q->rpm_status = RPM_SUSPENDING;
+	spin_unlock_irq(&q->queue_lock);
+
 	/*
 	 * Increase the pm_only counter before checking whether any
 	 * non-PM blk_queue_enter() calls are in progress to avoid that any
@@ -89,15 +93,14 @@ int blk_pre_runtime_suspend(struct request_queue *q)
 	/* Switch q_usage_counter back to per-cpu mode. */
 	blk_mq_unfreeze_queue(q);
 
-	spin_lock_irq(&q->queue_lock);
-	if (ret < 0)
+	if (ret < 0) {
+		spin_lock_irq(&q->queue_lock);
+		q->rpm_status = RPM_ACTIVE;
 		pm_runtime_mark_last_busy(q->dev);
-	else
-		q->rpm_status = RPM_SUSPENDING;
-	spin_unlock_irq(&q->queue_lock);
+		spin_unlock_irq(&q->queue_lock);
 
-	if (ret)
 		blk_clear_pm_only(q);
+	}
 
 	return ret;
 }
diff --git a/drivers/block/null_blk_zoned.c b/drivers/block/null_blk_zoned.c
index 2553e05e0725..5f1376578ea3 100644
--- a/drivers/block/null_blk_zoned.c
+++ b/drivers/block/null_blk_zoned.c
@@ -2,8 +2,7 @@
 #include <linux/vmalloc.h>
 #include "null_blk.h"
 
-/* zone_size in MBs to sectors. */
-#define ZONE_SIZE_SHIFT		11
+#define MB_TO_SECTS(mb) (((sector_t)mb * SZ_1M) >> SECTOR_SHIFT)
 
 static inline unsigned int null_zone_no(struct nullb_device *dev, sector_t sect)
 {
@@ -12,7 +11,7 @@ static inline unsigned int null_zone_no(struct nullb_device *dev, sector_t sect)
 
 int null_zone_init(struct nullb_device *dev)
 {
-	sector_t dev_size = (sector_t)dev->size * 1024 * 1024;
+	sector_t dev_capacity_sects;
 	sector_t sector = 0;
 	unsigned int i;
 
@@ -25,9 +24,12 @@ int null_zone_init(struct nullb_device *dev)
 		return -EINVAL;
 	}
 
-	dev->zone_size_sects = dev->zone_size << ZONE_SIZE_SHIFT;
-	dev->nr_zones = dev_size >>
-				(SECTOR_SHIFT + ilog2(dev->zone_size_sects));
+	dev_capacity_sects = MB_TO_SECTS(dev->size);
+	dev->zone_size_sects = MB_TO_SECTS(dev->zone_size);
+	dev->nr_zones = dev_capacity_sects >> ilog2(dev->zone_size_sects);
+	if (dev_capacity_sects & (dev->zone_size_sects - 1))
+		dev->nr_zones++;
+
 	dev->zones = kvmalloc_array(dev->nr_zones, sizeof(struct blk_zone),
 			GFP_KERNEL | __GFP_ZERO);
 	if (!dev->zones)
@@ -55,7 +57,10 @@ int null_zone_init(struct nullb_device *dev)
 		struct blk_zone *zone = &dev->zones[i];
 
 		zone->start = zone->wp = sector;
-		zone->len = dev->zone_size_sects;
+		if (zone->start + dev->zone_size_sects > dev_capacity_sects)
+			zone->len = dev_capacity_sects - zone->start;
+		else
+			zone->len = dev->zone_size_sects;
 		zone->type = BLK_ZONE_TYPE_SEQWRITE_REQ;
 		zone->cond = BLK_ZONE_COND_EMPTY;
 
diff --git a/drivers/bluetooth/hci_h5.c b/drivers/bluetooth/hci_h5.c
index e11af747395d..17b0f1b793ec 100644
--- a/drivers/bluetooth/hci_h5.c
+++ b/drivers/bluetooth/hci_h5.c
@@ -250,8 +250,12 @@ static int h5_close(struct hci_uart *hu)
 	if (h5->vnd && h5->vnd->close)
 		h5->vnd->close(h5);
 
-	if (!hu->serdev)
-		kfree(h5);
+	if (hu->serdev)
+		serdev_device_close(hu->serdev);
+
+	kfree_skb(h5->rx_skb);
+	kfree(h5);
+	h5 = NULL;
 
 	return 0;
 }
diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c
index ff366c2f58c1..303bc3e601a1 100644
--- a/drivers/dma/at_hdmac.c
+++ b/drivers/dma/at_hdmac.c
@@ -1673,9 +1673,11 @@ static struct dma_chan *at_dma_xlate(struct of_phandle_args *dma_spec,
 	dma_cap_zero(mask);
 	dma_cap_set(DMA_SLAVE, mask);
 
-	atslave = kzalloc(sizeof(*atslave), GFP_KERNEL);
-	if (!atslave)
+	atslave = kmalloc(sizeof(*atslave), GFP_KERNEL);
+	if (!atslave) {
+		put_device(&dmac_pdev->dev);
 		return NULL;
+	}
 
 	atslave->cfg = ATC_DST_H2SEL_HW | ATC_SRC_H2SEL_HW;
 	/*
@@ -1704,8 +1706,11 @@ static struct dma_chan *at_dma_xlate(struct of_phandle_args *dma_spec,
 	atslave->dma_dev = &dmac_pdev->dev;
 
 	chan = dma_request_channel(mask, at_dma_filter, atslave);
-	if (!chan)
+	if (!chan) {
+		put_device(&dmac_pdev->dev);
+		kfree(atslave);
 		return NULL;
+	}
 
 	atchan = to_at_dma_chan(chan);
 	atchan->per_if = dma_spec->args[0] & 0xff;
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 09410971615c..d2dd387c95d8 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -1434,8 +1434,7 @@ amdgpu_dm_update_connector_after_detect(struct amdgpu_dm_connector *aconnector)
 
 			drm_connector_update_edid_property(connector,
 							   aconnector->edid);
-			aconnector->num_modes = drm_add_edid_modes(connector, aconnector->edid);
-			drm_connector_list_update(connector);
+			drm_add_edid_modes(connector, aconnector->edid);
 
 			if (aconnector->dc_link->aux_mode)
 				drm_dp_cec_set_edid(&aconnector->dm_dp_aux.aux,
diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c
index 6cc71c90f85e..19337aed9f23 100644
--- a/drivers/i3c/master.c
+++ b/drivers/i3c/master.c
@@ -2492,7 +2492,7 @@ int i3c_master_register(struct i3c_master_controller *master,
 
 	ret = i3c_master_bus_init(master);
 	if (ret)
-		goto err_put_dev;
+		goto err_destroy_wq;
 
 	ret = device_add(&master->dev);
 	if (ret)
@@ -2523,6 +2523,9 @@ err_del_dev:
 err_cleanup_bus:
 	i3c_master_bus_cleanup(master);
 
+err_destroy_wq:
+	destroy_workqueue(master->wq);
+
 err_put_dev:
 	put_device(&master->dev);
 
diff --git a/drivers/iio/imu/bmi160/bmi160.h b/drivers/iio/imu/bmi160/bmi160.h
index 621f5309d735..431f10c2b951 100644
--- a/drivers/iio/imu/bmi160/bmi160.h
+++ b/drivers/iio/imu/bmi160/bmi160.h
@@ -7,6 +7,13 @@
 struct bmi160_data {
 	struct regmap *regmap;
 	struct iio_trigger *trig;
+	/*
+	 * Ensure natural alignment for timestamp if present.
+	 * Max length needed: 2 * 3 channels + 4 bytes padding + 8 byte ts.
+	 * If fewer channels are enabled, less space may be needed, as
+	 * long as the timestamp is still aligned to 8 bytes.
+	 */
+	__le16 buf[12] __aligned(8);
 };
 
 extern const struct regmap_config bmi160_regmap_config;
diff --git a/drivers/iio/imu/bmi160/bmi160_core.c b/drivers/iio/imu/bmi160/bmi160_core.c
index a5994899e396..088694c82327 100644
--- a/drivers/iio/imu/bmi160/bmi160_core.c
+++ b/drivers/iio/imu/bmi160/bmi160_core.c
@@ -411,8 +411,6 @@ static irqreturn_t bmi160_trigger_handler(int irq, void *p)
 	struct iio_poll_func *pf = p;
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct bmi160_data *data = iio_priv(indio_dev);
-	__le16 buf[12];
-	/* 2 sens x 3 axis x __le16 + 2 x __le16 pad + 4 x __le16 tstamp */
 	int i, ret, j = 0, base = BMI160_REG_DATA_MAGN_XOUT_L;
 	__le16 sample;
 
@@ -422,10 +420,10 @@ static irqreturn_t bmi160_trigger_handler(int irq, void *p)
 				       &sample, sizeof(sample));
 		if (ret)
 			goto done;
-		buf[j++] = sample;
+		data->buf[j++] = sample;
 	}
 
-	iio_push_to_buffers_with_timestamp(indio_dev, buf, pf->timestamp);
+	iio_push_to_buffers_with_timestamp(indio_dev, data->buf, pf->timestamp);
 done:
 	iio_trigger_notify_done(indio_dev->trig);
 	return IRQ_HANDLED;
diff --git a/drivers/md/dm-verity-target.c b/drivers/md/dm-verity-target.c
index 4fb33e7562c5..2aeb922e2365 100644
--- a/drivers/md/dm-verity-target.c
+++ b/drivers/md/dm-verity-target.c
@@ -533,6 +533,15 @@ static int verity_verify_io(struct dm_verity_io *io)
 	return 0;
 }
 
+/*
+ * Skip verity work in response to I/O error when system is shutting down.
+ */
+static inline bool verity_is_system_shutting_down(void)
+{
+	return system_state == SYSTEM_HALT || system_state == SYSTEM_POWER_OFF
+		|| system_state == SYSTEM_RESTART;
+}
+
 /*
  * End one "io" structure with a given error.
  */
@@ -560,7 +569,8 @@ static void verity_end_io(struct bio *bio)
 {
 	struct dm_verity_io *io = bio->bi_private;
 
-	if (bio->bi_status && !verity_fec_is_enabled(io->v)) {
+	if (bio->bi_status &&
+	    (!verity_fec_is_enabled(io->v) || verity_is_system_shutting_down())) {
 		verity_finish_io(io, bio->bi_status);
 		return;
 	}
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index ec136e44aef7..a195a85cc366 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -1145,7 +1145,7 @@ static void raid10_read_request(struct mddev *mddev, struct bio *bio,
 	struct md_rdev *err_rdev = NULL;
 	gfp_t gfp = GFP_NOIO;
 
-	if (r10_bio->devs[slot].rdev) {
+	if (slot >= 0 && r10_bio->devs[slot].rdev) {
 		/*
 		 * This is an error retry, but we cannot
 		 * safely dereference the rdev in the r10_bio,
@@ -1510,6 +1510,7 @@ static void __make_request(struct mddev *mddev, struct bio *bio, int sectors)
 	r10_bio->mddev = mddev;
 	r10_bio->sector = bio->bi_iter.bi_sector;
 	r10_bio->state = 0;
+	r10_bio->read_slot = -1;
 	memset(r10_bio->devs, 0, sizeof(r10_bio->devs[0]) * conf->copies);
 
 	if (bio_data_dir(bio) == READ)
diff --git a/drivers/media/usb/dvb-usb/gp8psk.c b/drivers/media/usb/dvb-usb/gp8psk.c
index 1282f701f185..ac8b8bf6ee1d 100644
--- a/drivers/media/usb/dvb-usb/gp8psk.c
+++ b/drivers/media/usb/dvb-usb/gp8psk.c
@@ -182,7 +182,7 @@ out_rel_fw:
 
 static int gp8psk_power_ctrl(struct dvb_usb_device *d, int onoff)
 {
-	u8 status, buf;
+	u8 status = 0, buf;
 	int gp_product_id = le16_to_cpu(d->udev->descriptor.idProduct);
 
 	if (onoff) {
diff --git a/drivers/misc/vmw_vmci/vmci_context.c b/drivers/misc/vmw_vmci/vmci_context.c
index 16695366ec92..26ff49fdf0f7 100644
--- a/drivers/misc/vmw_vmci/vmci_context.c
+++ b/drivers/misc/vmw_vmci/vmci_context.c
@@ -743,7 +743,7 @@ static int vmci_ctx_get_chkpt_doorbells(struct vmci_ctx *context,
 			return VMCI_ERROR_MORE_DATA;
 		}
 
-		dbells = kmalloc(data_size, GFP_ATOMIC);
+		dbells = kzalloc(data_size, GFP_ATOMIC);
 		if (!dbells)
 			return VMCI_ERROR_NO_MEM;
 
diff --git a/drivers/mtd/nand/spi/core.c b/drivers/mtd/nand/spi/core.c
index 671700af9180..0d21c68bfe24 100644
--- a/drivers/mtd/nand/spi/core.c
+++ b/drivers/mtd/nand/spi/core.c
@@ -317,10 +317,6 @@ static int spinand_write_to_cache_op(struct spinand_device *spinand,
 		buf += ret;
 	}
 
-	if (req->ooblen)
-		memcpy(req->oobbuf.in, spinand->oobbuf + req->ooboffs,
-		       req->ooblen);
-
 	return 0;
 }
 
diff --git a/drivers/net/wireless/marvell/mwifiex/join.c b/drivers/net/wireless/marvell/mwifiex/join.c
index d87aeff70cef..c2cb1e711c06 100644
--- a/drivers/net/wireless/marvell/mwifiex/join.c
+++ b/drivers/net/wireless/marvell/mwifiex/join.c
@@ -877,6 +877,8 @@ mwifiex_cmd_802_11_ad_hoc_start(struct mwifiex_private *priv,
 
 	memset(adhoc_start->ssid, 0, IEEE80211_MAX_SSID_LEN);
 
+	if (req_ssid->ssid_len > IEEE80211_MAX_SSID_LEN)
+		req_ssid->ssid_len = IEEE80211_MAX_SSID_LEN;
 	memcpy(adhoc_start->ssid, req_ssid->ssid, req_ssid->ssid_len);
 
 	mwifiex_dbg(adapter, INFO, "info: ADHOC_S_CMD: SSID = %s\n",
diff --git a/drivers/rtc/rtc-pl031.c b/drivers/rtc/rtc-pl031.c
index 180caebbd355..9566958476df 100644
--- a/drivers/rtc/rtc-pl031.c
+++ b/drivers/rtc/rtc-pl031.c
@@ -379,8 +379,10 @@ static int pl031_probe(struct amba_device *adev, const struct amba_id *id)
 
 	device_init_wakeup(&adev->dev, true);
 	ldata->rtc = devm_rtc_allocate_device(&adev->dev);
-	if (IS_ERR(ldata->rtc))
-		return PTR_ERR(ldata->rtc);
+	if (IS_ERR(ldata->rtc)) {
+		ret = PTR_ERR(ldata->rtc);
+		goto out;
+	}
 
 	ldata->rtc->ops = ops;
 
diff --git a/drivers/rtc/rtc-sun6i.c b/drivers/rtc/rtc-sun6i.c
index fc32be687606..c41bc8084d7c 100644
--- a/drivers/rtc/rtc-sun6i.c
+++ b/drivers/rtc/rtc-sun6i.c
@@ -276,7 +276,7 @@ static void __init sun6i_rtc_clk_init(struct device_node *node,
 								300000000);
 	if (IS_ERR(rtc->int_osc)) {
 		pr_crit("Couldn't register the internal oscillator\n");
-		return;
+		goto err;
 	}
 
 	parents[0] = clk_hw_get_name(rtc->int_osc);
@@ -292,7 +292,7 @@ static void __init sun6i_rtc_clk_init(struct device_node *node,
 	rtc->losc = clk_register(NULL, &rtc->hw);
 	if (IS_ERR(rtc->losc)) {
 		pr_crit("Couldn't register the LOSC clock\n");
-		return;
+		goto err_register;
 	}
 
 	of_property_read_string_index(node, "clock-output-names", 1,
@@ -303,7 +303,7 @@ static void __init sun6i_rtc_clk_init(struct device_node *node,
 					  &rtc->lock);
 	if (IS_ERR(rtc->ext_losc)) {
 		pr_crit("Couldn't register the LOSC external gate\n");
-		return;
+		goto err_register;
 	}
 
 	clk_data->num = 2;
@@ -316,6 +316,8 @@ static void __init sun6i_rtc_clk_init(struct device_node *node,
 	of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
 	return;
 
+err_register:
+	clk_hw_unregister_fixed_rate(rtc->int_osc);
 err:
 	kfree(clk_data);
 }
diff --git a/drivers/scsi/cxgbi/cxgb4i/Kconfig b/drivers/scsi/cxgbi/cxgb4i/Kconfig
index d1f1baba3285..d1bdd754c6a4 100644
--- a/drivers/scsi/cxgbi/cxgb4i/Kconfig
+++ b/drivers/scsi/cxgbi/cxgb4i/Kconfig
@@ -4,6 +4,7 @@ config SCSI_CXGB4_ISCSI
 	depends on PCI && INET && (IPV6 || IPV6=n)
 	depends on THERMAL || !THERMAL
 	depends on ETHERNET
+	depends on TLS || TLS=n
 	select NET_VENDOR_CHELSIO
 	select CHELSIO_T4
 	select CHELSIO_LIB
diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c
index c37886a26712..9d24bc05df0d 100644
--- a/drivers/thermal/cpu_cooling.c
+++ b/drivers/thermal/cpu_cooling.c
@@ -320,6 +320,7 @@ static int cpufreq_set_cur_state(struct thermal_cooling_device *cdev,
 				 unsigned long state)
 {
 	struct cpufreq_cooling_device *cpufreq_cdev = cdev->devdata;
+	int ret;
 
 	/* Request state should be less than max_level */
 	if (WARN_ON(state > cpufreq_cdev->max_level))
@@ -329,10 +330,12 @@ static int cpufreq_set_cur_state(struct thermal_cooling_device *cdev,
 	if (cpufreq_cdev->cpufreq_state == state)
 		return 0;
 
-	cpufreq_cdev->cpufreq_state = state;
+	ret = freq_qos_update_request(&cpufreq_cdev->qos_req,
+			cpufreq_cdev->freq_table[state].frequency);
+	if (ret > 0)
+		cpufreq_cdev->cpufreq_state = state;
 
-	return freq_qos_update_request(&cpufreq_cdev->qos_req,
-				cpufreq_cdev->freq_table[state].frequency);
+	return ret;
 }
 
 /**
diff --git a/drivers/vfio/pci/vfio_pci.c b/drivers/vfio/pci/vfio_pci.c
index 632653cd70e3..2372e161cd5e 100644
--- a/drivers/vfio/pci/vfio_pci.c
+++ b/drivers/vfio/pci/vfio_pci.c
@@ -114,8 +114,6 @@ static void vfio_pci_probe_mmaps(struct vfio_pci_device *vdev)
 	int bar;
 	struct vfio_pci_dummy_resource *dummy_res;
 
-	INIT_LIST_HEAD(&vdev->dummy_resources_list);
-
 	for (bar = PCI_STD_RESOURCES; bar <= PCI_STD_RESOURCE_END; bar++) {
 		res = vdev->pdev->resource + bar;
 
@@ -1606,6 +1604,7 @@ static int vfio_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	mutex_init(&vdev->igate);
 	spin_lock_init(&vdev->irqlock);
 	mutex_init(&vdev->ioeventfds_lock);
+	INIT_LIST_HEAD(&vdev->dummy_resources_list);
 	INIT_LIST_HEAD(&vdev->ioeventfds_list);
 	mutex_init(&vdev->vma_lock);
 	INIT_LIST_HEAD(&vdev->vma_list);
diff --git a/fs/bfs/inode.c b/fs/bfs/inode.c
index f8ce1368218b..1a8f3c8ab32c 100644
--- a/fs/bfs/inode.c
+++ b/fs/bfs/inode.c
@@ -351,7 +351,7 @@ static int bfs_fill_super(struct super_block *s, void *data, int silent)
 
 	info->si_lasti = (le32_to_cpu(bfs_sb->s_start) - BFS_BSIZE) / sizeof(struct bfs_inode) + BFS_ROOT_INO - 1;
 	if (info->si_lasti == BFS_MAX_LASTI)
-		printf("WARNING: filesystem %s was created with 512 inodes, the real maximum is 511, mounting anyway\n", s->s_id);
+		printf("NOTE: filesystem %s was created with 512 inodes, the real maximum is 511, mounting anyway\n", s->s_id);
 	else if (info->si_lasti > BFS_MAX_LASTI) {
 		printf("Impossible last inode number %lu > %d on %s\n", info->si_lasti, BFS_MAX_LASTI, s->s_id);
 		goto out1;
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index f58e03d1775d..8ed71b3b2546 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -1256,6 +1256,7 @@ static int cluster_pages_for_defrag(struct inode *inode,
 	u64 page_end;
 	u64 page_cnt;
 	u64 start = (u64)start_index << PAGE_SHIFT;
+	u64 search_start;
 	int ret;
 	int i;
 	int i_done;
@@ -1352,6 +1353,40 @@ again:
 
 	lock_extent_bits(&BTRFS_I(inode)->io_tree,
 			 page_start, page_end - 1, &cached_state);
+
+	/*
+	 * When defragmenting we skip ranges that have holes or inline extents,
+	 * (check should_defrag_range()), to avoid unnecessary IO and wasting
+	 * space. At btrfs_defrag_file(), we check if a range should be defragged
+	 * before locking the inode and then, if it should, we trigger a sync
+	 * page cache readahead - we lock the inode only after that to avoid
+	 * blocking for too long other tasks that possibly want to operate on
+	 * other file ranges. But before we were able to get the inode lock,
+	 * some other task may have punched a hole in the range, or we may have
+	 * now an inline extent, in which case we should not defrag. So check
+	 * for that here, where we have the inode and the range locked, and bail
+	 * out if that happened.
+	 */
+	search_start = page_start;
+	while (search_start < page_end) {
+		struct extent_map *em;
+
+		em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, search_start,
+				      page_end - search_start, 0);
+		if (IS_ERR(em)) {
+			ret = PTR_ERR(em);
+			goto out_unlock_range;
+		}
+		if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
+			free_extent_map(em);
+			/* Ok, 0 means we did not defrag anything */
+			ret = 0;
+			goto out_unlock_range;
+		}
+		search_start = extent_map_end(em);
+		free_extent_map(em);
+	}
+
 	clear_extent_bit(&BTRFS_I(inode)->io_tree, page_start,
 			  page_end - 1, EXTENT_DELALLOC | EXTENT_DO_ACCOUNTING |
 			  EXTENT_DEFRAG, 0, 0, &cached_state);
@@ -1382,6 +1417,10 @@ again:
 	btrfs_delalloc_release_extents(BTRFS_I(inode), page_cnt << PAGE_SHIFT);
 	extent_changeset_free(data_reserved);
 	return i_done;
+
+out_unlock_range:
+	unlock_extent_cached(&BTRFS_I(inode)->io_tree,
+			     page_start, page_end - 1, &cached_state);
 out:
 	for (i = 0; i < i_done; i++) {
 		unlock_page(pages[i]);
diff --git a/fs/crypto/fscrypt_private.h b/fs/crypto/fscrypt_private.h
index e84efc01512e..ec7387266190 100644
--- a/fs/crypto/fscrypt_private.h
+++ b/fs/crypto/fscrypt_private.h
@@ -23,6 +23,9 @@
 #define FSCRYPT_CONTEXT_V1	1
 #define FSCRYPT_CONTEXT_V2	2
 
+/* Keep this in sync with include/uapi/linux/fscrypt.h */
+#define FSCRYPT_MODE_MAX	FSCRYPT_MODE_ADIANTUM
+
 struct fscrypt_context_v1 {
 	u8 version; /* FSCRYPT_CONTEXT_V1 */
 	u8 contents_encryption_mode;
@@ -387,7 +390,7 @@ struct fscrypt_master_key {
 	spinlock_t		mk_decrypted_inodes_lock;
 
 	/* Per-mode tfms for DIRECT_KEY policies, allocated on-demand */
-	struct crypto_skcipher	*mk_mode_keys[__FSCRYPT_MODE_MAX + 1];
+	struct crypto_skcipher	*mk_mode_keys[FSCRYPT_MODE_MAX + 1];
 
 } __randomize_layout;
 
diff --git a/fs/crypto/hooks.c b/fs/crypto/hooks.c
index bb3b7fcfdd48..a5a40a76b8ed 100644
--- a/fs/crypto/hooks.c
+++ b/fs/crypto/hooks.c
@@ -58,8 +58,8 @@ int __fscrypt_prepare_link(struct inode *inode, struct inode *dir,
 	if (err)
 		return err;
 
-	/* ... in case we looked up ciphertext name before key was added */
-	if (dentry->d_flags & DCACHE_ENCRYPTED_NAME)
+	/* ... in case we looked up no-key name before key was added */
+	if (fscrypt_is_nokey_name(dentry))
 		return -ENOKEY;
 
 	if (!fscrypt_has_permitted_context(dir, inode))
@@ -83,9 +83,9 @@ int __fscrypt_prepare_rename(struct inode *old_dir, struct dentry *old_dentry,
 	if (err)
 		return err;
 
-	/* ... in case we looked up ciphertext name(s) before key was added */
-	if ((old_dentry->d_flags | new_dentry->d_flags) &
-	    DCACHE_ENCRYPTED_NAME)
+	/* ... in case we looked up no-key name(s) before key was added */
+	if (fscrypt_is_nokey_name(old_dentry) ||
+	    fscrypt_is_nokey_name(new_dentry))
 		return -ENOKEY;
 
 	if (old_dir != new_dir) {
diff --git a/fs/crypto/keysetup.c b/fs/crypto/keysetup.c
index 75898340eb46..3e86f75b532a 100644
--- a/fs/crypto/keysetup.c
+++ b/fs/crypto/keysetup.c
@@ -55,6 +55,8 @@ static struct fscrypt_mode *
 select_encryption_mode(const union fscrypt_policy *policy,
 		       const struct inode *inode)
 {
+	BUILD_BUG_ON(ARRAY_SIZE(available_modes) != FSCRYPT_MODE_MAX + 1);
+
 	if (S_ISREG(inode->i_mode))
 		return &available_modes[fscrypt_policy_contents_mode(policy)];
 
diff --git a/fs/crypto/policy.c b/fs/crypto/policy.c
index 4072ba644595..8e1b10861c10 100644
--- a/fs/crypto/policy.c
+++ b/fs/crypto/policy.c
@@ -55,7 +55,8 @@ bool fscrypt_supported_policy(const union fscrypt_policy *policy_u,
 			return false;
 		}
 
-		if (policy->flags & ~FSCRYPT_POLICY_FLAGS_VALID) {
+		if (policy->flags & ~(FSCRYPT_POLICY_FLAGS_PAD_MASK |
+				      FSCRYPT_POLICY_FLAG_DIRECT_KEY)) {
 			fscrypt_warn(inode,
 				     "Unsupported encryption flags (0x%02x)",
 				     policy->flags);
@@ -76,7 +77,8 @@ bool fscrypt_supported_policy(const union fscrypt_policy *policy_u,
 			return false;
 		}
 
-		if (policy->flags & ~FSCRYPT_POLICY_FLAGS_VALID) {
+		if (policy->flags & ~(FSCRYPT_POLICY_FLAGS_PAD_MASK |
+				      FSCRYPT_POLICY_FLAG_DIRECT_KEY)) {
 			fscrypt_warn(inode,
 				     "Unsupported encryption flags (0x%02x)",
 				     policy->flags);
diff --git a/fs/exec.c b/fs/exec.c
index 2441eb1a1e2d..1b4d2206d53a 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -1009,8 +1009,8 @@ EXPORT_SYMBOL(read_code);
 
 /*
  * Maps the mm_struct mm into the current task struct.
- * On success, this function returns with the mutex
- * exec_update_mutex locked.
+ * On success, this function returns with exec_update_lock
+ * held for writing.
  */
 static int exec_mmap(struct mm_struct *mm)
 {
@@ -1023,7 +1023,7 @@ static int exec_mmap(struct mm_struct *mm)
 	old_mm = current->mm;
 	exec_mm_release(tsk, old_mm);
 
-	ret = mutex_lock_killable(&tsk->signal->exec_update_mutex);
+	ret = down_write_killable(&tsk->signal->exec_update_lock);
 	if (ret)
 		return ret;
 
@@ -1038,7 +1038,7 @@ static int exec_mmap(struct mm_struct *mm)
 		down_read(&old_mm->mmap_sem);
 		if (unlikely(old_mm->core_state)) {
 			up_read(&old_mm->mmap_sem);
-			mutex_unlock(&tsk->signal->exec_update_mutex);
+			up_write(&tsk->signal->exec_update_lock);
 			return -EINTR;
 		}
 	}
@@ -1450,7 +1450,7 @@ static void free_bprm(struct linux_binprm *bprm)
 	free_arg_pages(bprm);
 	if (bprm->cred) {
 		if (bprm->called_exec_mmap)
-			mutex_unlock(&current->signal->exec_update_mutex);
+			up_write(&current->signal->exec_update_lock);
 		mutex_unlock(&current->signal->cred_guard_mutex);
 		abort_creds(bprm->cred);
 	}
@@ -1500,7 +1500,7 @@ void install_exec_creds(struct linux_binprm *bprm)
 	 * credentials; any time after this it may be unlocked.
 	 */
 	security_bprm_committed_creds(bprm);
-	mutex_unlock(&current->signal->exec_update_mutex);
+	up_write(&current->signal->exec_update_lock);
 	mutex_unlock(&current->signal->cred_guard_mutex);
 }
 EXPORT_SYMBOL(install_exec_creds);
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 36a81b57012a..59038e361337 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -2192,6 +2192,9 @@ static int ext4_add_entry(handle_t *handle, struct dentry *dentry,
 	if (!dentry->d_name.len)
 		return -EINVAL;
 
+	if (fscrypt_is_nokey_name(dentry))
+		return -ENOKEY;
+
 #ifdef CONFIG_UNICODE
 	if (ext4_has_strict_mode(sbi) && IS_CASEFOLDED(dir) &&
 	    sbi->s_encoding && utf8_validate(sbi->s_encoding, &dentry->d_name))
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 920658ca8777..06568467b0c2 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -455,19 +455,17 @@ static bool system_going_down(void)
 
 static void ext4_handle_error(struct super_block *sb)
 {
+	journal_t *journal = EXT4_SB(sb)->s_journal;
+
 	if (test_opt(sb, WARN_ON_ERROR))
 		WARN_ON_ONCE(1);
 
-	if (sb_rdonly(sb))
+	if (sb_rdonly(sb) || test_opt(sb, ERRORS_CONT))
 		return;
 
-	if (!test_opt(sb, ERRORS_CONT)) {
-		journal_t *journal = EXT4_SB(sb)->s_journal;
-
-		EXT4_SB(sb)->s_mount_flags |= EXT4_MF_FS_ABORTED;
-		if (journal)
-			jbd2_journal_abort(journal, -EIO);
-	}
+	EXT4_SB(sb)->s_mount_flags |= EXT4_MF_FS_ABORTED;
+	if (journal)
+		jbd2_journal_abort(journal, -EIO);
 	/*
 	 * We force ERRORS_RO behavior when system is rebooting. Otherwise we
 	 * could panic during 'reboot -f' as the underlying device got already
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index c966ccc44c15..a57219c51c01 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -1596,7 +1596,7 @@ int f2fs_write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
 			goto out;
 		}
 
-		if (NM_I(sbi)->dirty_nat_cnt == 0 &&
+		if (NM_I(sbi)->nat_cnt[DIRTY_NAT] == 0 &&
 				SIT_I(sbi)->dirty_sentries == 0 &&
 				prefree_segments(sbi) == 0) {
 			f2fs_flush_sit_entries(sbi, cpc);
diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c
index 9b0bedd82581..d8d64447bc94 100644
--- a/fs/f2fs/debug.c
+++ b/fs/f2fs/debug.c
@@ -107,8 +107,8 @@ static void update_general_status(struct f2fs_sb_info *sbi)
 		si->node_pages = NODE_MAPPING(sbi)->nrpages;
 	if (sbi->meta_inode)
 		si->meta_pages = META_MAPPING(sbi)->nrpages;
-	si->nats = NM_I(sbi)->nat_cnt;
-	si->dirty_nats = NM_I(sbi)->dirty_nat_cnt;
+	si->nats = NM_I(sbi)->nat_cnt[TOTAL_NAT];
+	si->dirty_nats = NM_I(sbi)->nat_cnt[DIRTY_NAT];
 	si->sits = MAIN_SEGS(sbi);
 	si->dirty_sits = SIT_I(sbi)->dirty_sentries;
 	si->free_nids = NM_I(sbi)->nid_cnt[FREE_NID];
@@ -254,9 +254,10 @@ get_cache:
 	si->cache_mem += (NM_I(sbi)->nid_cnt[FREE_NID] +
 				NM_I(sbi)->nid_cnt[PREALLOC_NID]) *
 				sizeof(struct free_nid);
-	si->cache_mem += NM_I(sbi)->nat_cnt * sizeof(struct nat_entry);
-	si->cache_mem += NM_I(sbi)->dirty_nat_cnt *
-					sizeof(struct nat_entry_set);
+	si->cache_mem += NM_I(sbi)->nat_cnt[TOTAL_NAT] *
+				sizeof(struct nat_entry);
+	si->cache_mem += NM_I(sbi)->nat_cnt[DIRTY_NAT] *
+				sizeof(struct nat_entry_set);
 	si->cache_mem += si->inmem_pages * sizeof(struct inmem_pages);
 	for (i = 0; i < MAX_INO_ENTRY; i++)
 		si->cache_mem += sbi->im[i].ino_num * sizeof(struct ino_entry);
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 63440abe58c4..4ca3c2a0a0f5 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -797,6 +797,13 @@ enum nid_state {
 	MAX_NID_STATE,
 };
 
+enum nat_state {
+	TOTAL_NAT,
+	DIRTY_NAT,
+	RECLAIMABLE_NAT,
+	MAX_NAT_STATE,
+};
+
 struct f2fs_nm_info {
 	block_t nat_blkaddr;		/* base disk address of NAT */
 	nid_t max_nid;			/* maximum possible node ids */
@@ -812,8 +819,7 @@ struct f2fs_nm_info {
 	struct rw_semaphore nat_tree_lock;	/* protect nat_tree_lock */
 	struct list_head nat_entries;	/* cached nat entry list (clean) */
 	spinlock_t nat_list_lock;	/* protect clean nat entry list */
-	unsigned int nat_cnt;		/* the # of cached nat entries */
-	unsigned int dirty_nat_cnt;	/* total num of nat entries in set */
+	unsigned int nat_cnt[MAX_NAT_STATE]; /* the # of cached nat entries */
 	unsigned int nat_blocks;	/* # of nat blocks */
 
 	/* free node ids management */
@@ -2998,6 +3004,8 @@ bool f2fs_empty_dir(struct inode *dir);
 
 static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
 {
+	if (fscrypt_is_nokey_name(dentry))
+		return -ENOKEY;
 	return f2fs_do_add_link(d_inode(dentry->d_parent), &dentry->d_name,
 				inode, inode->i_ino, inode->i_mode);
 }
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 3ac2a4b32375..7ce33698ae38 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -62,8 +62,8 @@ bool f2fs_available_free_memory(struct f2fs_sb_info *sbi, int type)
 				sizeof(struct free_nid)) >> PAGE_SHIFT;
 		res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2);
 	} else if (type == NAT_ENTRIES) {
-		mem_size = (nm_i->nat_cnt * sizeof(struct nat_entry)) >>
-							PAGE_SHIFT;
+		mem_size = (nm_i->nat_cnt[TOTAL_NAT] *
+				sizeof(struct nat_entry)) >> PAGE_SHIFT;
 		res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2);
 		if (excess_cached_nats(sbi))
 			res = false;
@@ -177,7 +177,8 @@ static struct nat_entry *__init_nat_entry(struct f2fs_nm_info *nm_i,
 	list_add_tail(&ne->list, &nm_i->nat_entries);
 	spin_unlock(&nm_i->nat_list_lock);
 
-	nm_i->nat_cnt++;
+	nm_i->nat_cnt[TOTAL_NAT]++;
+	nm_i->nat_cnt[RECLAIMABLE_NAT]++;
 	return ne;
 }
 
@@ -207,7 +208,8 @@ static unsigned int __gang_lookup_nat_cache(struct f2fs_nm_info *nm_i,
 static void __del_from_nat_cache(struct f2fs_nm_info *nm_i, struct nat_entry *e)
 {
 	radix_tree_delete(&nm_i->nat_root, nat_get_nid(e));
-	nm_i->nat_cnt--;
+	nm_i->nat_cnt[TOTAL_NAT]--;
+	nm_i->nat_cnt[RECLAIMABLE_NAT]--;
 	__free_nat_entry(e);
 }
 
@@ -253,7 +255,8 @@ static void __set_nat_cache_dirty(struct f2fs_nm_info *nm_i,
 	if (get_nat_flag(ne, IS_DIRTY))
 		goto refresh_list;
 
-	nm_i->dirty_nat_cnt++;
+	nm_i->nat_cnt[DIRTY_NAT]++;
+	nm_i->nat_cnt[RECLAIMABLE_NAT]--;
 	set_nat_flag(ne, IS_DIRTY, true);
 refresh_list:
 	spin_lock(&nm_i->nat_list_lock);
@@ -273,7 +276,8 @@ static void __clear_nat_cache_dirty(struct f2fs_nm_info *nm_i,
 
 	set_nat_flag(ne, IS_DIRTY, false);
 	set->entry_cnt--;
-	nm_i->dirty_nat_cnt--;
+	nm_i->nat_cnt[DIRTY_NAT]--;
+	nm_i->nat_cnt[RECLAIMABLE_NAT]++;
 }
 
 static unsigned int __gang_lookup_nat_set(struct f2fs_nm_info *nm_i,
@@ -2881,14 +2885,17 @@ int f2fs_flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc)
 	LIST_HEAD(sets);
 	int err = 0;
 
-	/* during unmount, let's flush nat_bits before checking dirty_nat_cnt */
+	/*
+	 * during unmount, let's flush nat_bits before checking
+	 * nat_cnt[DIRTY_NAT].
+	 */
 	if (enabled_nat_bits(sbi, cpc)) {
 		down_write(&nm_i->nat_tree_lock);
 		remove_nats_in_journal(sbi);
 		up_write(&nm_i->nat_tree_lock);
 	}
 
-	if (!nm_i->dirty_nat_cnt)
+	if (!nm_i->nat_cnt[DIRTY_NAT])
 		return 0;
 
 	down_write(&nm_i->nat_tree_lock);
@@ -2899,7 +2906,8 @@ int f2fs_flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc)
 	 * into nat entry set.
 	 */
 	if (enabled_nat_bits(sbi, cpc) ||
-		!__has_cursum_space(journal, nm_i->dirty_nat_cnt, NAT_JOURNAL))
+		!__has_cursum_space(journal,
+			nm_i->nat_cnt[DIRTY_NAT], NAT_JOURNAL))
 		remove_nats_in_journal(sbi);
 
 	while ((found = __gang_lookup_nat_set(nm_i,
@@ -3023,7 +3031,6 @@ static int init_node_manager(struct f2fs_sb_info *sbi)
 						F2FS_RESERVED_NODE_NUM;
 	nm_i->nid_cnt[FREE_NID] = 0;
 	nm_i->nid_cnt[PREALLOC_NID] = 0;
-	nm_i->nat_cnt = 0;
 	nm_i->ram_thresh = DEF_RAM_THRESHOLD;
 	nm_i->ra_nid_pages = DEF_RA_NID_PAGES;
 	nm_i->dirty_nats_ratio = DEF_DIRTY_NAT_RATIO_THRESHOLD;
@@ -3160,7 +3167,7 @@ void f2fs_destroy_node_manager(struct f2fs_sb_info *sbi)
 			__del_from_nat_cache(nm_i, natvec[idx]);
 		}
 	}
-	f2fs_bug_on(sbi, nm_i->nat_cnt);
+	f2fs_bug_on(sbi, nm_i->nat_cnt[TOTAL_NAT]);
 
 	/* destroy nat set cache */
 	nid = 0;
diff --git a/fs/f2fs/node.h b/fs/f2fs/node.h
index e05af5df5648..4a2e7eaf2b02 100644
--- a/fs/f2fs/node.h
+++ b/fs/f2fs/node.h
@@ -123,13 +123,13 @@ static inline void raw_nat_from_node_info(struct f2fs_nat_entry *raw_ne,
 
 static inline bool excess_dirty_nats(struct f2fs_sb_info *sbi)
 {
-	return NM_I(sbi)->dirty_nat_cnt >= NM_I(sbi)->max_nid *
+	return NM_I(sbi)->nat_cnt[DIRTY_NAT] >= NM_I(sbi)->max_nid *
 					NM_I(sbi)->dirty_nats_ratio / 100;
 }
 
 static inline bool excess_cached_nats(struct f2fs_sb_info *sbi)
 {
-	return NM_I(sbi)->nat_cnt >= DEF_NAT_CACHE_THRESHOLD;
+	return NM_I(sbi)->nat_cnt[TOTAL_NAT] >= DEF_NAT_CACHE_THRESHOLD;
 }
 
 static inline bool excess_dirty_nodes(struct f2fs_sb_info *sbi)
diff --git a/fs/f2fs/shrinker.c b/fs/f2fs/shrinker.c
index a467aca29cfe..3ceebaaee384 100644
--- a/fs/f2fs/shrinker.c
+++ b/fs/f2fs/shrinker.c
@@ -18,9 +18,7 @@ static unsigned int shrinker_run_no;
 
 static unsigned long __count_nat_entries(struct f2fs_sb_info *sbi)
 {
-	long count = NM_I(sbi)->nat_cnt - NM_I(sbi)->dirty_nat_cnt;
-
-	return count > 0 ? count : 0;
+	return NM_I(sbi)->nat_cnt[RECLAIMABLE_NAT];
 }
 
 static unsigned long __count_free_nids(struct f2fs_sb_info *sbi)
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index fa461db696e7..a9a083232bcf 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -2523,7 +2523,6 @@ static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
 	block_t total_sections, blocks_per_seg;
 	struct f2fs_super_block *raw_super = (struct f2fs_super_block *)
 					(bh->b_data + F2FS_SUPER_OFFSET);
-	unsigned int blocksize;
 	size_t crc_offset = 0;
 	__u32 crc = 0;
 
@@ -2557,10 +2556,10 @@ static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
 	}
 
 	/* Currently, support only 4KB block size */
-	blocksize = 1 << le32_to_cpu(raw_super->log_blocksize);
-	if (blocksize != F2FS_BLKSIZE) {
-		f2fs_info(sbi, "Invalid blocksize (%u), supports only 4KB",
-			  blocksize);
+	if (le32_to_cpu(raw_super->log_blocksize) != F2FS_BLKSIZE_BITS) {
+		f2fs_info(sbi, "Invalid log_blocksize (%u), supports only %u",
+			  le32_to_cpu(raw_super->log_blocksize),
+			  F2FS_BLKSIZE_BITS);
 		return -EFSCORRUPTED;
 	}
 
diff --git a/fs/fcntl.c b/fs/fcntl.c
index 3d40771e8e7c..3dc90e5293e6 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -779,9 +779,10 @@ void send_sigio(struct fown_struct *fown, int fd, int band)
 {
 	struct task_struct *p;
 	enum pid_type type;
+	unsigned long flags;
 	struct pid *pid;
 	
-	read_lock(&fown->lock);
+	read_lock_irqsave(&fown->lock, flags);
 
 	type = fown->pid_type;
 	pid = fown->pid;
@@ -802,7 +803,7 @@ void send_sigio(struct fown_struct *fown, int fd, int band)
 		read_unlock(&tasklist_lock);
 	}
  out_unlock_fown:
-	read_unlock(&fown->lock);
+	read_unlock_irqrestore(&fown->lock, flags);
 }
 
 static void send_sigurg_to_task(struct task_struct *p,
@@ -817,9 +818,10 @@ int send_sigurg(struct fown_struct *fown)
 	struct task_struct *p;
 	enum pid_type type;
 	struct pid *pid;
+	unsigned long flags;
 	int ret = 0;
 	
-	read_lock(&fown->lock);
+	read_lock_irqsave(&fown->lock, flags);
 
 	type = fown->pid_type;
 	pid = fown->pid;
@@ -842,7 +844,7 @@ int send_sigurg(struct fown_struct *fown)
 		read_unlock(&tasklist_lock);
 	}
  out_unlock_fown:
-	read_unlock(&fown->lock);
+	read_unlock_irqrestore(&fown->lock, flags);
 	return ret;
 }
 
diff --git a/fs/fuse/acl.c b/fs/fuse/acl.c
index 5a48cee6d7d3..f529075a2ce8 100644
--- a/fs/fuse/acl.c
+++ b/fs/fuse/acl.c
@@ -19,6 +19,9 @@ struct posix_acl *fuse_get_acl(struct inode *inode, int type)
 	void *value = NULL;
 	struct posix_acl *acl;
 
+	if (fuse_is_bad(inode))
+		return ERR_PTR(-EIO);
+
 	if (!fc->posix_acl || fc->no_getxattr)
 		return NULL;
 
@@ -53,6 +56,9 @@ int fuse_set_acl(struct inode *inode, struct posix_acl *acl, int type)
 	const char *name;
 	int ret;
 
+	if (fuse_is_bad(inode))
+		return -EIO;
+
 	if (!fc->posix_acl || fc->no_setxattr)
 		return -EOPNOTSUPP;
 
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index ee190119f45c..60378f3baaae 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -201,7 +201,7 @@ static int fuse_dentry_revalidate(struct dentry *entry, unsigned int flags)
 	int ret;
 
 	inode = d_inode_rcu(entry);
-	if (inode && is_bad_inode(inode))
+	if (inode && fuse_is_bad(inode))
 		goto invalid;
 	else if (time_before64(fuse_dentry_time(entry), get_jiffies_64()) ||
 		 (flags & LOOKUP_REVAL)) {
@@ -386,6 +386,9 @@ static struct dentry *fuse_lookup(struct inode *dir, struct dentry *entry,
 	bool outarg_valid = true;
 	bool locked;
 
+	if (fuse_is_bad(dir))
+		return ERR_PTR(-EIO);
+
 	locked = fuse_lock_inode(dir);
 	err = fuse_lookup_name(dir->i_sb, get_node_id(dir), &entry->d_name,
 			       &outarg, &inode);
@@ -529,6 +532,9 @@ static int fuse_atomic_open(struct inode *dir, struct dentry *entry,
 	struct fuse_conn *fc = get_fuse_conn(dir);
 	struct dentry *res = NULL;
 
+	if (fuse_is_bad(dir))
+		return -EIO;
+
 	if (d_in_lookup(entry)) {
 		res = fuse_lookup(dir, entry, 0);
 		if (IS_ERR(res))
@@ -577,6 +583,9 @@ static int create_new_entry(struct fuse_conn *fc, struct fuse_args *args,
 	int err;
 	struct fuse_forget_link *forget;
 
+	if (fuse_is_bad(dir))
+		return -EIO;
+
 	forget = fuse_alloc_forget();
 	if (!forget)
 		return -ENOMEM;
@@ -704,6 +713,9 @@ static int fuse_unlink(struct inode *dir, struct dentry *entry)
 	struct fuse_conn *fc = get_fuse_conn(dir);
 	FUSE_ARGS(args);
 
+	if (fuse_is_bad(dir))
+		return -EIO;
+
 	args.opcode = FUSE_UNLINK;
 	args.nodeid = get_node_id(dir);
 	args.in_numargs = 1;
@@ -740,6 +752,9 @@ static int fuse_rmdir(struct inode *dir, struct dentry *entry)
 	struct fuse_conn *fc = get_fuse_conn(dir);
 	FUSE_ARGS(args);
 
+	if (fuse_is_bad(dir))
+		return -EIO;
+
 	args.opcode = FUSE_RMDIR;
 	args.nodeid = get_node_id(dir);
 	args.in_numargs = 1;
@@ -818,6 +833,9 @@ static int fuse_rename2(struct inode *olddir, struct dentry *oldent,
 	struct fuse_conn *fc = get_fuse_conn(olddir);
 	int err;
 
+	if (fuse_is_bad(olddir))
+		return -EIO;
+
 	if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE))
 		return -EINVAL;
 
@@ -953,7 +971,7 @@ static int fuse_do_getattr(struct inode *inode, struct kstat *stat,
 	if (!err) {
 		if (fuse_invalid_attr(&outarg.attr) ||
 		    (inode->i_mode ^ outarg.attr.mode) & S_IFMT) {
-			make_bad_inode(inode);
+			fuse_make_bad(inode);
 			err = -EIO;
 		} else {
 			fuse_change_attributes(inode, &outarg.attr,
@@ -1155,6 +1173,9 @@ static int fuse_permission(struct inode *inode, int mask)
 	bool refreshed = false;
 	int err = 0;
 
+	if (fuse_is_bad(inode))
+		return -EIO;
+
 	if (!fuse_allow_current_process(fc))
 		return -EACCES;
 
@@ -1250,7 +1271,7 @@ static const char *fuse_get_link(struct dentry *dentry, struct inode *inode,
 	int err;
 
 	err = -EIO;
-	if (is_bad_inode(inode))
+	if (fuse_is_bad(inode))
 		goto out_err;
 
 	if (fc->cache_symlinks)
@@ -1298,7 +1319,7 @@ static int fuse_dir_fsync(struct file *file, loff_t start, loff_t end,
 	struct fuse_conn *fc = get_fuse_conn(inode);
 	int err;
 
-	if (is_bad_inode(inode))
+	if (fuse_is_bad(inode))
 		return -EIO;
 
 	if (fc->no_fsyncdir)
@@ -1575,7 +1596,7 @@ int fuse_do_setattr(struct dentry *dentry, struct iattr *attr,
 
 	if (fuse_invalid_attr(&outarg.attr) ||
 	    (inode->i_mode ^ outarg.attr.mode) & S_IFMT) {
-		make_bad_inode(inode);
+		fuse_make_bad(inode);
 		err = -EIO;
 		goto error;
 	}
@@ -1631,6 +1652,9 @@ static int fuse_setattr(struct dentry *entry, struct iattr *attr)
 	struct file *file = (attr->ia_valid & ATTR_FILE) ? attr->ia_file : NULL;
 	int ret;
 
+	if (fuse_is_bad(inode))
+		return -EIO;
+
 	if (!fuse_allow_current_process(get_fuse_conn(inode)))
 		return -EACCES;
 
@@ -1689,6 +1713,9 @@ static int fuse_getattr(const struct path *path, struct kstat *stat,
 	struct inode *inode = d_inode(path->dentry);
 	struct fuse_conn *fc = get_fuse_conn(inode);
 
+	if (fuse_is_bad(inode))
+		return -EIO;
+
 	if (!fuse_allow_current_process(fc))
 		return -EACCES;
 
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index ab4fc1255aca..1e1aef1bc20b 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -222,6 +222,9 @@ int fuse_open_common(struct inode *inode, struct file *file, bool isdir)
 			  fc->atomic_o_trunc &&
 			  fc->writeback_cache;
 
+	if (fuse_is_bad(inode))
+		return -EIO;
+
 	err = generic_file_open(inode, file);
 	if (err)
 		return err;
@@ -443,7 +446,7 @@ static int fuse_flush(struct file *file, fl_owner_t id)
 	FUSE_ARGS(args);
 	int err;
 
-	if (is_bad_inode(inode))
+	if (fuse_is_bad(inode))
 		return -EIO;
 
 	if (fc->no_flush)
@@ -506,7 +509,7 @@ static int fuse_fsync(struct file *file, loff_t start, loff_t end,
 	struct fuse_conn *fc = get_fuse_conn(inode);
 	int err;
 
-	if (is_bad_inode(inode))
+	if (fuse_is_bad(inode))
 		return -EIO;
 
 	inode_lock(inode);
@@ -830,7 +833,7 @@ static int fuse_readpage(struct file *file, struct page *page)
 	int err;
 
 	err = -EIO;
-	if (is_bad_inode(inode))
+	if (fuse_is_bad(inode))
 		goto out;
 
 	err = fuse_do_readpage(file, page);
@@ -973,7 +976,7 @@ static int fuse_readpages(struct file *file, struct address_space *mapping,
 	int err;
 
 	err = -EIO;
-	if (is_bad_inode(inode))
+	if (fuse_is_bad(inode))
 		goto out;
 
 	data.file = file;
@@ -1569,7 +1572,7 @@ static ssize_t fuse_file_read_iter(struct kiocb *iocb, struct iov_iter *to)
 	struct file *file = iocb->ki_filp;
 	struct fuse_file *ff = file->private_data;
 
-	if (is_bad_inode(file_inode(file)))
+	if (fuse_is_bad(file_inode(file)))
 		return -EIO;
 
 	if (!(ff->open_flags & FOPEN_DIRECT_IO))
@@ -1583,7 +1586,7 @@ static ssize_t fuse_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
 	struct file *file = iocb->ki_filp;
 	struct fuse_file *ff = file->private_data;
 
-	if (is_bad_inode(file_inode(file)))
+	if (fuse_is_bad(file_inode(file)))
 		return -EIO;
 
 	if (!(ff->open_flags & FOPEN_DIRECT_IO))
@@ -2133,7 +2136,7 @@ static int fuse_writepages(struct address_space *mapping,
 	int err;
 
 	err = -EIO;
-	if (is_bad_inode(inode))
+	if (fuse_is_bad(inode))
 		goto out;
 
 	data.inode = inode;
@@ -2911,7 +2914,7 @@ long fuse_ioctl_common(struct file *file, unsigned int cmd,
 	if (!fuse_allow_current_process(fc))
 		return -EACCES;
 
-	if (is_bad_inode(inode))
+	if (fuse_is_bad(inode))
 		return -EIO;
 
 	return fuse_do_ioctl(file, cmd, arg, flags);
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index d7cde216fc87..e3688312e9f1 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -158,6 +158,8 @@ enum {
 	FUSE_I_INIT_RDPLUS,
 	/** An operation changing file size is in progress  */
 	FUSE_I_SIZE_UNSTABLE,
+	/* Bad inode */
+	FUSE_I_BAD,
 };
 
 struct fuse_conn;
@@ -787,6 +789,16 @@ static inline u64 fuse_get_attr_version(struct fuse_conn *fc)
 	return atomic64_read(&fc->attr_version);
 }
 
+static inline void fuse_make_bad(struct inode *inode)
+{
+	set_bit(FUSE_I_BAD, &get_fuse_inode(inode)->state);
+}
+
+static inline bool fuse_is_bad(struct inode *inode)
+{
+	return unlikely(test_bit(FUSE_I_BAD, &get_fuse_inode(inode)->state));
+}
+
 /** Device operations */
 extern const struct file_operations fuse_dev_operations;
 
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index f58ab84b09fb..aa1d5cf1bc3a 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -115,7 +115,7 @@ static void fuse_evict_inode(struct inode *inode)
 		fuse_queue_forget(fc, fi->forget, fi->nodeid, fi->nlookup);
 		fi->forget = NULL;
 	}
-	if (S_ISREG(inode->i_mode) && !is_bad_inode(inode)) {
+	if (S_ISREG(inode->i_mode) && !fuse_is_bad(inode)) {
 		WARN_ON(!list_empty(&fi->write_files));
 		WARN_ON(!list_empty(&fi->queued_writes));
 	}
@@ -306,7 +306,7 @@ struct inode *fuse_iget(struct super_block *sb, u64 nodeid,
 		unlock_new_inode(inode);
 	} else if ((inode->i_mode ^ attr->mode) & S_IFMT) {
 		/* Inode has changed type, any I/O on the old should fail */
-		make_bad_inode(inode);
+		fuse_make_bad(inode);
 		iput(inode);
 		goto retry;
 	}
diff --git a/fs/fuse/readdir.c b/fs/fuse/readdir.c
index 6a40f75a0d25..70f685b61e3a 100644
--- a/fs/fuse/readdir.c
+++ b/fs/fuse/readdir.c
@@ -207,7 +207,7 @@ retry:
 			dput(dentry);
 			goto retry;
 		}
-		if (is_bad_inode(inode)) {
+		if (fuse_is_bad(inode)) {
 			dput(dentry);
 			return -EIO;
 		}
@@ -568,7 +568,7 @@ int fuse_readdir(struct file *file, struct dir_context *ctx)
 	struct inode *inode = file_inode(file);
 	int err;
 
-	if (is_bad_inode(inode))
+	if (fuse_is_bad(inode))
 		return -EIO;
 
 	mutex_lock(&ff->readdir.lock);
diff --git a/fs/fuse/xattr.c b/fs/fuse/xattr.c
index 20d052e08b3b..28fed5295770 100644
--- a/fs/fuse/xattr.c
+++ b/fs/fuse/xattr.c
@@ -113,6 +113,9 @@ ssize_t fuse_listxattr(struct dentry *entry, char *list, size_t size)
 	struct fuse_getxattr_out outarg;
 	ssize_t ret;
 
+	if (fuse_is_bad(inode))
+		return -EIO;
+
 	if (!fuse_allow_current_process(fc))
 		return -EACCES;
 
@@ -178,6 +181,9 @@ static int fuse_xattr_get(const struct xattr_handler *handler,
 			 struct dentry *dentry, struct inode *inode,
 			 const char *name, void *value, size_t size)
 {
+	if (fuse_is_bad(inode))
+		return -EIO;
+
 	return fuse_getxattr(inode, name, value, size);
 }
 
@@ -186,6 +192,9 @@ static int fuse_xattr_set(const struct xattr_handler *handler,
 			  const char *name, const void *value, size_t size,
 			  int flags)
 {
+	if (fuse_is_bad(inode))
+		return -EIO;
+
 	if (!value)
 		return fuse_removexattr(inode, name);
 
diff --git a/fs/jffs2/jffs2_fs_sb.h b/fs/jffs2/jffs2_fs_sb.h
index 778275f48a87..5a7091746f68 100644
--- a/fs/jffs2/jffs2_fs_sb.h
+++ b/fs/jffs2/jffs2_fs_sb.h
@@ -38,6 +38,7 @@ struct jffs2_mount_opts {
 	 * users. This is implemented simply by means of not allowing the
 	 * latter users to write to the file system if the amount if the
 	 * available space is less then 'rp_size'. */
+	bool set_rp_size;
 	unsigned int rp_size;
 };
 
diff --git a/fs/jffs2/super.c b/fs/jffs2/super.c
index 60636b2e35ea..6839a61e8ff1 100644
--- a/fs/jffs2/super.c
+++ b/fs/jffs2/super.c
@@ -88,7 +88,7 @@ static int jffs2_show_options(struct seq_file *s, struct dentry *root)
 
 	if (opts->override_compr)
 		seq_printf(s, ",compr=%s", jffs2_compr_name(opts->compr));
-	if (opts->rp_size)
+	if (opts->set_rp_size)
 		seq_printf(s, ",rp_size=%u", opts->rp_size / 1024);
 
 	return 0;
@@ -208,11 +208,8 @@ static int jffs2_parse_param(struct fs_context *fc, struct fs_parameter *param)
 	case Opt_rp_size:
 		if (result.uint_32 > UINT_MAX / 1024)
 			return invalf(fc, "jffs2: rp_size unrepresentable");
-		opt = result.uint_32 * 1024;
-		if (opt > c->mtd->size)
-			return invalf(fc, "jffs2: Too large reserve pool specified, max is %llu KB",
-				      c->mtd->size / 1024);
-		c->mount_opts.rp_size = opt;
+		c->mount_opts.rp_size = result.uint_32 * 1024;
+		c->mount_opts.set_rp_size = true;
 		break;
 	default:
 		return -EINVAL;
@@ -231,8 +228,10 @@ static inline void jffs2_update_mount_opts(struct fs_context *fc)
 		c->mount_opts.override_compr = new_c->mount_opts.override_compr;
 		c->mount_opts.compr = new_c->mount_opts.compr;
 	}
-	if (new_c->mount_opts.rp_size)
+	if (new_c->mount_opts.set_rp_size) {
+		c->mount_opts.set_rp_size = new_c->mount_opts.set_rp_size;
 		c->mount_opts.rp_size = new_c->mount_opts.rp_size;
+	}
 	mutex_unlock(&c->alloc_sem);
 }
 
@@ -272,6 +271,10 @@ static int jffs2_fill_super(struct super_block *sb, struct fs_context *fc)
 	c->mtd = sb->s_mtd;
 	c->os_priv = sb;
 
+	if (c->mount_opts.rp_size > c->mtd->size)
+		return invalf(fc, "jffs2: Too large reserve pool specified, max is %llu KB",
+			      c->mtd->size / 1024);
+
 	/* Initialize JFFS2 superblock locks, the further initialization will
 	 * be done later */
 	mutex_init(&c->alloc_sem);
diff --git a/fs/namespace.c b/fs/namespace.c
index 2adfe7b166a3..76ea92994d26 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -156,10 +156,10 @@ static inline void mnt_add_count(struct mount *mnt, int n)
 /*
  * vfsmount lock must be held for write
  */
-unsigned int mnt_get_count(struct mount *mnt)
+int mnt_get_count(struct mount *mnt)
 {
 #ifdef CONFIG_SMP
-	unsigned int count = 0;
+	int count = 0;
 	int cpu;
 
 	for_each_possible_cpu(cpu) {
@@ -1123,6 +1123,7 @@ static DECLARE_DELAYED_WORK(delayed_mntput_work, delayed_mntput);
 static void mntput_no_expire(struct mount *mnt)
 {
 	LIST_HEAD(list);
+	int count;
 
 	rcu_read_lock();
 	if (likely(READ_ONCE(mnt->mnt_ns))) {
@@ -1146,7 +1147,9 @@ static void mntput_no_expire(struct mount *mnt)
 	 */
 	smp_mb();
 	mnt_add_count(mnt, -1);
-	if (mnt_get_count(mnt)) {
+	count = mnt_get_count(mnt);
+	if (count != 0) {
+		WARN_ON(count < 0);
 		rcu_read_unlock();
 		unlock_mount_hash();
 		return;
diff --git a/fs/nfs/nfs4super.c b/fs/nfs/nfs4super.c
index 04c57066a11a..b90642b022eb 100644
--- a/fs/nfs/nfs4super.c
+++ b/fs/nfs/nfs4super.c
@@ -96,7 +96,7 @@ static void nfs4_evict_inode(struct inode *inode)
 	nfs_inode_return_delegation_noreclaim(inode);
 	/* Note that above delegreturn would trigger pnfs return-on-close */
 	pnfs_return_layout(inode);
-	pnfs_destroy_layout(NFS_I(inode));
+	pnfs_destroy_layout_final(NFS_I(inode));
 	/* First call standard NFS clear_inode() code */
 	nfs_clear_inode(inode);
 }
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index 9c2b07ce57b2..9fd115c4d0a2 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -294,6 +294,7 @@ void
 pnfs_put_layout_hdr(struct pnfs_layout_hdr *lo)
 {
 	struct inode *inode;
+	unsigned long i_state;
 
 	if (!lo)
 		return;
@@ -304,8 +305,12 @@ pnfs_put_layout_hdr(struct pnfs_layout_hdr *lo)
 		if (!list_empty(&lo->plh_segs))
 			WARN_ONCE(1, "NFS: BUG unfreed layout segments.\n");
 		pnfs_detach_layout_hdr(lo);
+		i_state = inode->i_state;
 		spin_unlock(&inode->i_lock);
 		pnfs_free_layout_hdr(lo);
+		/* Notify pnfs_destroy_layout_final() that we're done */
+		if (i_state & (I_FREEING | I_CLEAR))
+			wake_up_var(lo);
 	}
 }
 
@@ -723,8 +728,7 @@ pnfs_free_lseg_list(struct list_head *free_me)
 	}
 }
 
-void
-pnfs_destroy_layout(struct nfs_inode *nfsi)
+static struct pnfs_layout_hdr *__pnfs_destroy_layout(struct nfs_inode *nfsi)
 {
 	struct pnfs_layout_hdr *lo;
 	LIST_HEAD(tmp_list);
@@ -742,9 +746,34 @@ pnfs_destroy_layout(struct nfs_inode *nfsi)
 		pnfs_put_layout_hdr(lo);
 	} else
 		spin_unlock(&nfsi->vfs_inode.i_lock);
+	return lo;
+}
+
+void pnfs_destroy_layout(struct nfs_inode *nfsi)
+{
+	__pnfs_destroy_layout(nfsi);
 }
 EXPORT_SYMBOL_GPL(pnfs_destroy_layout);
 
+static bool pnfs_layout_removed(struct nfs_inode *nfsi,
+				struct pnfs_layout_hdr *lo)
+{
+	bool ret;
+
+	spin_lock(&nfsi->vfs_inode.i_lock);
+	ret = nfsi->layout != lo;
+	spin_unlock(&nfsi->vfs_inode.i_lock);
+	return ret;
+}
+
+void pnfs_destroy_layout_final(struct nfs_inode *nfsi)
+{
+	struct pnfs_layout_hdr *lo = __pnfs_destroy_layout(nfsi);
+
+	if (lo)
+		wait_var_event(lo, pnfs_layout_removed(nfsi, lo));
+}
+
 static bool
 pnfs_layout_add_bulk_destroy_list(struct inode *inode,
 		struct list_head *layout_list)
diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
index f8a38065c7e4..63da33a92d83 100644
--- a/fs/nfs/pnfs.h
+++ b/fs/nfs/pnfs.h
@@ -255,6 +255,7 @@ struct pnfs_layout_segment *pnfs_layout_process(struct nfs4_layoutget *lgp);
 void pnfs_layoutget_free(struct nfs4_layoutget *lgp);
 void pnfs_free_lseg_list(struct list_head *tmp_list);
 void pnfs_destroy_layout(struct nfs_inode *);
+void pnfs_destroy_layout_final(struct nfs_inode *);
 void pnfs_destroy_all_layouts(struct nfs_client *);
 int pnfs_destroy_layouts_byfsid(struct nfs_client *clp,
 		struct nfs_fsid *fsid,
@@ -651,6 +652,10 @@ static inline void pnfs_destroy_layout(struct nfs_inode *nfsi)
 {
 }
 
+static inline void pnfs_destroy_layout_final(struct nfs_inode *nfsi)
+{
+}
+
 static inline struct pnfs_layout_segment *
 pnfs_get_lseg(struct pnfs_layout_segment *lseg)
 {
diff --git a/fs/pnode.h b/fs/pnode.h
index 49a058c73e4c..26f74e092bd9 100644
--- a/fs/pnode.h
+++ b/fs/pnode.h
@@ -44,7 +44,7 @@ int propagate_mount_busy(struct mount *, int);
 void propagate_mount_unlock(struct mount *);
 void mnt_release_group_id(struct mount *);
 int get_dominating_id(struct mount *mnt, const struct path *root);
-unsigned int mnt_get_count(struct mount *mnt);
+int mnt_get_count(struct mount *mnt);
 void mnt_set_mountpoint(struct mount *, struct mountpoint *,
 			struct mount *);
 void mnt_change_mountpoint(struct mount *parent, struct mountpoint *mp,
diff --git a/fs/proc/base.c b/fs/proc/base.c
index b690074e65ff..653c2d8aa1cd 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -403,11 +403,11 @@ print0:
 
 static int lock_trace(struct task_struct *task)
 {
-	int err = mutex_lock_killable(&task->signal->exec_update_mutex);
+	int err = down_read_killable(&task->signal->exec_update_lock);
 	if (err)
 		return err;
 	if (!ptrace_may_access(task, PTRACE_MODE_ATTACH_FSCREDS)) {
-		mutex_unlock(&task->signal->exec_update_mutex);
+		up_read(&task->signal->exec_update_lock);
 		return -EPERM;
 	}
 	return 0;
@@ -415,7 +415,7 @@ static int lock_trace(struct task_struct *task)
 
 static void unlock_trace(struct task_struct *task)
 {
-	mutex_unlock(&task->signal->exec_update_mutex);
+	up_read(&task->signal->exec_update_lock);
 }
 
 #ifdef CONFIG_STACKTRACE
@@ -2769,7 +2769,7 @@ static int do_io_accounting(struct task_struct *task, struct seq_file *m, int wh
 	unsigned long flags;
 	int result;
 
-	result = mutex_lock_killable(&task->signal->exec_update_mutex);
+	result = down_read_killable(&task->signal->exec_update_lock);
 	if (result)
 		return result;
 
@@ -2805,7 +2805,7 @@ static int do_io_accounting(struct task_struct *task, struct seq_file *m, int wh
 	result = 0;
 
 out_unlock:
-	mutex_unlock(&task->signal->exec_update_mutex);
+	up_read(&task->signal->exec_update_lock);
 	return result;
 }
 
diff --git a/fs/quota/quota_tree.c b/fs/quota/quota_tree.c
index a6f856f341dc..c5562c871c8b 100644
--- a/fs/quota/quota_tree.c
+++ b/fs/quota/quota_tree.c
@@ -62,7 +62,7 @@ static ssize_t read_blk(struct qtree_mem_dqinfo *info, uint blk, char *buf)
 
 	memset(buf, 0, info->dqi_usable_bs);
 	return sb->s_op->quota_read(sb, info->dqi_type, buf,
-	       info->dqi_usable_bs, blk << info->dqi_blocksize_bits);
+	       info->dqi_usable_bs, (loff_t)blk << info->dqi_blocksize_bits);
 }
 
 static ssize_t write_blk(struct qtree_mem_dqinfo *info, uint blk, char *buf)
@@ -71,7 +71,7 @@ static ssize_t write_blk(struct qtree_mem_dqinfo *info, uint blk, char *buf)
 	ssize_t ret;
 
 	ret = sb->s_op->quota_write(sb, info->dqi_type, buf,
-	       info->dqi_usable_bs, blk << info->dqi_blocksize_bits);
+	       info->dqi_usable_bs, (loff_t)blk << info->dqi_blocksize_bits);
 	if (ret != info->dqi_usable_bs) {
 		quota_error(sb, "dquota write failed");
 		if (ret >= 0)
@@ -284,7 +284,7 @@ static uint find_free_dqentry(struct qtree_mem_dqinfo *info,
 			    blk);
 		goto out_buf;
 	}
-	dquot->dq_off = (blk << info->dqi_blocksize_bits) +
+	dquot->dq_off = ((loff_t)blk << info->dqi_blocksize_bits) +
 			sizeof(struct qt_disk_dqdbheader) +
 			i * info->dqi_entry_size;
 	kfree(buf);
@@ -559,7 +559,7 @@ static loff_t find_block_dqentry(struct qtree_mem_dqinfo *info,
 		ret = -EIO;
 		goto out_buf;
 	} else {
-		ret = (blk << info->dqi_blocksize_bits) + sizeof(struct
+		ret = ((loff_t)blk << info->dqi_blocksize_bits) + sizeof(struct
 		  qt_disk_dqdbheader) + i * info->dqi_entry_size;
 	}
 out_buf:
diff --git a/fs/reiserfs/stree.c b/fs/reiserfs/stree.c
index bb4973aefbb1..9e64e23014e8 100644
--- a/fs/reiserfs/stree.c
+++ b/fs/reiserfs/stree.c
@@ -454,6 +454,12 @@ static int is_leaf(char *buf, int blocksize, struct buffer_head *bh)
 					 "(second one): %h", ih);
 			return 0;
 		}
+		if (is_direntry_le_ih(ih) && (ih_item_len(ih) < (ih_entry_count(ih) * IH_SIZE))) {
+			reiserfs_warning(NULL, "reiserfs-5093",
+					 "item entry count seems wrong %h",
+					 ih);
+			return 0;
+		}
 		prev_location = ih_location(ih);
 	}
 
diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c
index 6c0e19f7a21f..a5e5e9b9d4e3 100644
--- a/fs/ubifs/dir.c
+++ b/fs/ubifs/dir.c
@@ -278,6 +278,15 @@ done:
 	return d_splice_alias(inode, dentry);
 }
 
+static int ubifs_prepare_create(struct inode *dir, struct dentry *dentry,
+				struct fscrypt_name *nm)
+{
+	if (fscrypt_is_nokey_name(dentry))
+		return -ENOKEY;
+
+	return fscrypt_setup_filename(dir, &dentry->d_name, 0, nm);
+}
+
 static int ubifs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
 			bool excl)
 {
@@ -301,7 +310,7 @@ static int ubifs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
 	if (err)
 		return err;
 
-	err = fscrypt_setup_filename(dir, &dentry->d_name, 0, &nm);
+	err = ubifs_prepare_create(dir, dentry, &nm);
 	if (err)
 		goto out_budg;
 
@@ -961,7 +970,7 @@ static int ubifs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
 	if (err)
 		return err;
 
-	err = fscrypt_setup_filename(dir, &dentry->d_name, 0, &nm);
+	err = ubifs_prepare_create(dir, dentry, &nm);
 	if (err)
 		goto out_budg;
 
@@ -1046,7 +1055,7 @@ static int ubifs_mknod(struct inode *dir, struct dentry *dentry,
 		return err;
 	}
 
-	err = fscrypt_setup_filename(dir, &dentry->d_name, 0, &nm);
+	err = ubifs_prepare_create(dir, dentry, &nm);
 	if (err) {
 		kfree(dev);
 		goto out_budg;
@@ -1130,7 +1139,7 @@ static int ubifs_symlink(struct inode *dir, struct dentry *dentry,
 	if (err)
 		return err;
 
-	err = fscrypt_setup_filename(dir, &dentry->d_name, 0, &nm);
+	err = ubifs_prepare_create(dir, dentry, &nm);
 	if (err)
 		goto out_budg;
 
diff --git a/include/linux/fscrypt.h b/include/linux/fscrypt.h
index f622f7460ed8..032e5bcf9701 100644
--- a/include/linux/fscrypt.h
+++ b/include/linux/fscrypt.h
@@ -100,6 +100,35 @@ static inline void fscrypt_handle_d_move(struct dentry *dentry)
 	dentry->d_flags &= ~DCACHE_ENCRYPTED_NAME;
 }
 
+/**
+ * fscrypt_is_nokey_name() - test whether a dentry is a no-key name
+ * @dentry: the dentry to check
+ *
+ * This returns true if the dentry is a no-key dentry.  A no-key dentry is a
+ * dentry that was created in an encrypted directory that hasn't had its
+ * encryption key added yet.  Such dentries may be either positive or negative.
+ *
+ * When a filesystem is asked to create a new filename in an encrypted directory
+ * and the new filename's dentry is a no-key dentry, it must fail the operation
+ * with ENOKEY.  This includes ->create(), ->mkdir(), ->mknod(), ->symlink(),
+ * ->rename(), and ->link().  (However, ->rename() and ->link() are already
+ * handled by fscrypt_prepare_rename() and fscrypt_prepare_link().)
+ *
+ * This is necessary because creating a filename requires the directory's
+ * encryption key, but just checking for the key on the directory inode during
+ * the final filesystem operation doesn't guarantee that the key was available
+ * during the preceding dentry lookup.  And the key must have already been
+ * available during the dentry lookup in order for it to have been checked
+ * whether the filename already exists in the directory and for the new file's
+ * dentry not to be invalidated due to it incorrectly having the no-key flag.
+ *
+ * Return: %true if the dentry is a no-key name
+ */
+static inline bool fscrypt_is_nokey_name(const struct dentry *dentry)
+{
+	return dentry->d_flags & DCACHE_ENCRYPTED_NAME;
+}
+
 /* crypto.c */
 extern void fscrypt_enqueue_decrypt_work(struct work_struct *);
 extern struct fscrypt_ctx *fscrypt_get_ctx(gfp_t);
@@ -290,6 +319,11 @@ static inline void fscrypt_handle_d_move(struct dentry *dentry)
 {
 }
 
+static inline bool fscrypt_is_nokey_name(const struct dentry *dentry)
+{
+	return false;
+}
+
 /* crypto.c */
 static inline void fscrypt_enqueue_decrypt_work(struct work_struct *work)
 {
diff --git a/include/linux/kdev_t.h b/include/linux/kdev_t.h
index 85b5151911cf..4856706fbfeb 100644
--- a/include/linux/kdev_t.h
+++ b/include/linux/kdev_t.h
@@ -21,61 +21,61 @@
 	})
 
 /* acceptable for old filesystems */
-static inline bool old_valid_dev(dev_t dev)
+static __always_inline bool old_valid_dev(dev_t dev)
 {
 	return MAJOR(dev) < 256 && MINOR(dev) < 256;
 }
 
-static inline u16 old_encode_dev(dev_t dev)
+static __always_inline u16 old_encode_dev(dev_t dev)
 {
 	return (MAJOR(dev) << 8) | MINOR(dev);
 }
 
-static inline dev_t old_decode_dev(u16 val)
+static __always_inline dev_t old_decode_dev(u16 val)
 {
 	return MKDEV((val >> 8) & 255, val & 255);
 }
 
-static inline u32 new_encode_dev(dev_t dev)
+static __always_inline u32 new_encode_dev(dev_t dev)
 {
 	unsigned major = MAJOR(dev);
 	unsigned minor = MINOR(dev);
 	return (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12);
 }
 
-static inline dev_t new_decode_dev(u32 dev)
+static __always_inline dev_t new_decode_dev(u32 dev)
 {
 	unsigned major = (dev & 0xfff00) >> 8;
 	unsigned minor = (dev & 0xff) | ((dev >> 12) & 0xfff00);
 	return MKDEV(major, minor);
 }
 
-static inline u64 huge_encode_dev(dev_t dev)
+static __always_inline u64 huge_encode_dev(dev_t dev)
 {
 	return new_encode_dev(dev);
 }
 
-static inline dev_t huge_decode_dev(u64 dev)
+static __always_inline dev_t huge_decode_dev(u64 dev)
 {
 	return new_decode_dev(dev);
 }
 
-static inline int sysv_valid_dev(dev_t dev)
+static __always_inline int sysv_valid_dev(dev_t dev)
 {
 	return MAJOR(dev) < (1<<14) && MINOR(dev) < (1<<18);
 }
 
-static inline u32 sysv_encode_dev(dev_t dev)
+static __always_inline u32 sysv_encode_dev(dev_t dev)
 {
 	return MINOR(dev) | (MAJOR(dev) << 18);
 }
 
-static inline unsigned sysv_major(u32 dev)
+static __always_inline unsigned sysv_major(u32 dev)
 {
 	return (dev >> 18) & 0x3fff;
 }
 
-static inline unsigned sysv_minor(u32 dev)
+static __always_inline unsigned sysv_minor(u32 dev)
 {
 	return dev & 0x3ffff;
 }
diff --git a/include/linux/of.h b/include/linux/of.h
index babc3572bbe9..4c6acfaac075 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -1288,6 +1288,7 @@ static inline int of_get_available_child_count(const struct device_node *np)
 #define _OF_DECLARE(table, name, compat, fn, fn_type)			\
 	static const struct of_device_id __of_table_##name		\
 		__used __section(__##table##_of_table)			\
+		__aligned(__alignof__(struct of_device_id))		\
 		 = { .compatible = compat,				\
 		     .data = (fn == (fn_type)NULL) ? fn : fn  }
 #else
diff --git a/include/linux/rwsem.h b/include/linux/rwsem.h
index 00d6054687dd..8a3606372abc 100644
--- a/include/linux/rwsem.h
+++ b/include/linux/rwsem.h
@@ -125,6 +125,7 @@ static inline int rwsem_is_contended(struct rw_semaphore *sem)
  * lock for reading
  */
 extern void down_read(struct rw_semaphore *sem);
+extern int __must_check down_read_interruptible(struct rw_semaphore *sem);
 extern int __must_check down_read_killable(struct rw_semaphore *sem);
 
 /*
@@ -173,6 +174,7 @@ extern void downgrade_write(struct rw_semaphore *sem);
  * See Documentation/locking/lockdep-design.rst for more details.)
  */
 extern void down_read_nested(struct rw_semaphore *sem, int subclass);
+extern int __must_check down_read_killable_nested(struct rw_semaphore *sem, int subclass);
 extern void down_write_nested(struct rw_semaphore *sem, int subclass);
 extern int down_write_killable_nested(struct rw_semaphore *sem, int subclass);
 extern void _down_write_nest_lock(struct rw_semaphore *sem, struct lockdep_map *nest_lock);
@@ -193,6 +195,7 @@ extern void down_read_non_owner(struct rw_semaphore *sem);
 extern void up_read_non_owner(struct rw_semaphore *sem);
 #else
 # define down_read_nested(sem, subclass)		down_read(sem)
+# define down_read_killable_nested(sem, subclass)	down_read_killable(sem)
 # define down_write_nest_lock(sem, nest_lock)	down_write(sem)
 # define down_write_nested(sem, subclass)	down_write(sem)
 # define down_write_killable_nested(sem, subclass)	down_write_killable(sem)
diff --git a/include/linux/sched/signal.h b/include/linux/sched/signal.h
index a29df79540ce..baf58f4cb057 100644
--- a/include/linux/sched/signal.h
+++ b/include/linux/sched/signal.h
@@ -226,12 +226,13 @@ struct signal_struct {
 					 * credential calculations
 					 * (notably. ptrace)
 					 * Deprecated do not use in new code.
-					 * Use exec_update_mutex instead.
-					 */
-	struct mutex exec_update_mutex;	/* Held while task_struct is being
-					 * updated during exec, and may have
-					 * inconsistent permissions.
+					 * Use exec_update_lock instead.
 					 */
+	struct rw_semaphore exec_update_lock;	/* Held while task_struct is
+						 * being updated during exec,
+						 * and may have inconsistent
+						 * permissions.
+						 */
 } __randomize_layout;
 
 /*
diff --git a/include/uapi/linux/const.h b/include/uapi/linux/const.h
index 5ed721ad5b19..af2a44c08683 100644
--- a/include/uapi/linux/const.h
+++ b/include/uapi/linux/const.h
@@ -28,4 +28,9 @@
 #define _BITUL(x)	(_UL(1) << (x))
 #define _BITULL(x)	(_ULL(1) << (x))
 
+#define __ALIGN_KERNEL(x, a)		__ALIGN_KERNEL_MASK(x, (typeof(x))(a) - 1)
+#define __ALIGN_KERNEL_MASK(x, mask)	(((x) + (mask)) & ~(mask))
+
+#define __KERNEL_DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
+
 #endif /* _UAPI_LINUX_CONST_H */
diff --git a/include/uapi/linux/ethtool.h b/include/uapi/linux/ethtool.h
index 8938b76c4ee3..7857aa413627 100644
--- a/include/uapi/linux/ethtool.h
+++ b/include/uapi/linux/ethtool.h
@@ -14,7 +14,7 @@
 #ifndef _UAPI_LINUX_ETHTOOL_H
 #define _UAPI_LINUX_ETHTOOL_H
 
-#include <linux/kernel.h>
+#include <linux/const.h>
 #include <linux/types.h>
 #include <linux/if_ether.h>
 
diff --git a/include/uapi/linux/fscrypt.h b/include/uapi/linux/fscrypt.h
index 39ccfe9311c3..b14f436f4ebd 100644
--- a/include/uapi/linux/fscrypt.h
+++ b/include/uapi/linux/fscrypt.h
@@ -17,7 +17,6 @@
 #define FSCRYPT_POLICY_FLAGS_PAD_32		0x03
 #define FSCRYPT_POLICY_FLAGS_PAD_MASK		0x03
 #define FSCRYPT_POLICY_FLAG_DIRECT_KEY		0x04
-#define FSCRYPT_POLICY_FLAGS_VALID		0x07
 
 /* Encryption algorithms */
 #define FSCRYPT_MODE_AES_256_XTS		1
@@ -25,7 +24,7 @@
 #define FSCRYPT_MODE_AES_128_CBC		5
 #define FSCRYPT_MODE_AES_128_CTS		6
 #define FSCRYPT_MODE_ADIANTUM			9
-#define __FSCRYPT_MODE_MAX			9
+/* If adding a mode number > 9, update FSCRYPT_MODE_MAX in fscrypt_private.h */
 
 /*
  * Legacy policy version; ad-hoc KDF and no key verification.
@@ -162,7 +161,7 @@ struct fscrypt_get_key_status_arg {
 #define FS_POLICY_FLAGS_PAD_32		FSCRYPT_POLICY_FLAGS_PAD_32
 #define FS_POLICY_FLAGS_PAD_MASK	FSCRYPT_POLICY_FLAGS_PAD_MASK
 #define FS_POLICY_FLAG_DIRECT_KEY	FSCRYPT_POLICY_FLAG_DIRECT_KEY
-#define FS_POLICY_FLAGS_VALID		FSCRYPT_POLICY_FLAGS_VALID
+#define FS_POLICY_FLAGS_VALID		0x07	/* contains old flags only */
 #define FS_ENCRYPTION_MODE_INVALID	0	/* never used */
 #define FS_ENCRYPTION_MODE_AES_256_XTS	FSCRYPT_MODE_AES_256_XTS
 #define FS_ENCRYPTION_MODE_AES_256_GCM	2	/* never used */
diff --git a/include/uapi/linux/kernel.h b/include/uapi/linux/kernel.h
index 0ff8f7477847..fadf2db71fe8 100644
--- a/include/uapi/linux/kernel.h
+++ b/include/uapi/linux/kernel.h
@@ -3,13 +3,6 @@
 #define _UAPI_LINUX_KERNEL_H
 
 #include <linux/sysinfo.h>
-
-/*
- * 'kernel.h' contains some often-used function prototypes etc
- */
-#define __ALIGN_KERNEL(x, a)		__ALIGN_KERNEL_MASK(x, (typeof(x))(a) - 1)
-#define __ALIGN_KERNEL_MASK(x, mask)	(((x) + (mask)) & ~(mask))
-
-#define __KERNEL_DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
+#include <linux/const.h>
 
 #endif /* _UAPI_LINUX_KERNEL_H */
diff --git a/include/uapi/linux/lightnvm.h b/include/uapi/linux/lightnvm.h
index f9a1be7fc696..ead2e72e5c88 100644
--- a/include/uapi/linux/lightnvm.h
+++ b/include/uapi/linux/lightnvm.h
@@ -21,7 +21,7 @@
 #define _UAPI_LINUX_LIGHTNVM_H
 
 #ifdef __KERNEL__
-#include <linux/kernel.h>
+#include <linux/const.h>
 #include <linux/ioctl.h>
 #else /* __KERNEL__ */
 #include <stdio.h>
diff --git a/include/uapi/linux/mroute6.h b/include/uapi/linux/mroute6.h
index c36177a86516..a1fd6173e2db 100644
--- a/include/uapi/linux/mroute6.h
+++ b/include/uapi/linux/mroute6.h
@@ -2,7 +2,7 @@
 #ifndef _UAPI__LINUX_MROUTE6_H
 #define _UAPI__LINUX_MROUTE6_H
 
-#include <linux/kernel.h>
+#include <linux/const.h>
 #include <linux/types.h>
 #include <linux/sockios.h>
 #include <linux/in6.h>		/* For struct sockaddr_in6. */
diff --git a/include/uapi/linux/netfilter/x_tables.h b/include/uapi/linux/netfilter/x_tables.h
index a8283f7dbc51..b8c6bb233ac1 100644
--- a/include/uapi/linux/netfilter/x_tables.h
+++ b/include/uapi/linux/netfilter/x_tables.h
@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
 #ifndef _UAPI_X_TABLES_H
 #define _UAPI_X_TABLES_H
-#include <linux/kernel.h>
+#include <linux/const.h>
 #include <linux/types.h>
 
 #define XT_FUNCTION_MAXNAMELEN 30
diff --git a/include/uapi/linux/netlink.h b/include/uapi/linux/netlink.h
index 0a4d73317759..622c78c821aa 100644
--- a/include/uapi/linux/netlink.h
+++ b/include/uapi/linux/netlink.h
@@ -2,7 +2,7 @@
 #ifndef _UAPI__LINUX_NETLINK_H
 #define _UAPI__LINUX_NETLINK_H
 
-#include <linux/kernel.h>
+#include <linux/const.h>
 #include <linux/socket.h> /* for __kernel_sa_family_t */
 #include <linux/types.h>
 
diff --git a/include/uapi/linux/sysctl.h b/include/uapi/linux/sysctl.h
index 87aa2a6d9125..cc453ed0e65e 100644
--- a/include/uapi/linux/sysctl.h
+++ b/include/uapi/linux/sysctl.h
@@ -23,7 +23,7 @@
 #ifndef _UAPI_LINUX_SYSCTL_H
 #define _UAPI_LINUX_SYSCTL_H
 
-#include <linux/kernel.h>
+#include <linux/const.h>
 #include <linux/types.h>
 #include <linux/compiler.h>
 
diff --git a/init/init_task.c b/init/init_task.c
index bd403ed3e418..df7041be96fc 100644
--- a/init/init_task.c
+++ b/init/init_task.c
@@ -26,7 +26,7 @@ static struct signal_struct init_signals = {
 	.multiprocess	= HLIST_HEAD_INIT,
 	.rlim		= INIT_RLIMITS,
 	.cred_guard_mutex = __MUTEX_INITIALIZER(init_signals.cred_guard_mutex),
-	.exec_update_mutex = __MUTEX_INITIALIZER(init_signals.exec_update_mutex),
+	.exec_update_lock = __RWSEM_INITIALIZER(init_signals.exec_update_lock),
 #ifdef CONFIG_POSIX_TIMERS
 	.posix_timers = LIST_HEAD_INIT(init_signals.posix_timers),
 	.cputimer	= {
diff --git a/kernel/cgroup/cgroup-v1.c b/kernel/cgroup/cgroup-v1.c
index f684c82efc2e..79682c23407c 100644
--- a/kernel/cgroup/cgroup-v1.c
+++ b/kernel/cgroup/cgroup-v1.c
@@ -914,6 +914,8 @@ int cgroup1_parse_param(struct fs_context *fc, struct fs_parameter *param)
 	opt = fs_parse(fc, &cgroup1_fs_parameters, param, &result);
 	if (opt == -ENOPARAM) {
 		if (strcmp(param->key, "source") == 0) {
+			if (fc->source)
+				return invalf(fc, "Multiple sources not supported");
 			fc->source = param->string;
 			param->string = NULL;
 			return 0;
diff --git a/kernel/events/core.c b/kernel/events/core.c
index 9f7c2da99299..2ef33e9a7591 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -1254,7 +1254,7 @@ static void put_ctx(struct perf_event_context *ctx)
  * function.
  *
  * Lock order:
- *    exec_update_mutex
+ *    exec_update_lock
  *	task_struct::perf_event_mutex
  *	  perf_event_context::mutex
  *	    perf_event::child_mutex;
@@ -11001,24 +11001,6 @@ SYSCALL_DEFINE5(perf_event_open,
 		goto err_task;
 	}
 
-	if (task) {
-		err = mutex_lock_interruptible(&task->signal->exec_update_mutex);
-		if (err)
-			goto err_task;
-
-		/*
-		 * Reuse ptrace permission checks for now.
-		 *
-		 * We must hold exec_update_mutex across this and any potential
-		 * perf_install_in_context() call for this new event to
-		 * serialize against exec() altering our credentials (and the
-		 * perf_event_exit_task() that could imply).
-		 */
-		err = -EACCES;
-		if (!ptrace_may_access(task, PTRACE_MODE_READ_REALCREDS))
-			goto err_cred;
-	}
-
 	if (flags & PERF_FLAG_PID_CGROUP)
 		cgroup_fd = pid;
 
@@ -11026,7 +11008,7 @@ SYSCALL_DEFINE5(perf_event_open,
 				 NULL, NULL, cgroup_fd);
 	if (IS_ERR(event)) {
 		err = PTR_ERR(event);
-		goto err_cred;
+		goto err_task;
 	}
 
 	if (is_sampling_event(event)) {
@@ -11145,6 +11127,24 @@ SYSCALL_DEFINE5(perf_event_open,
 		goto err_context;
 	}
 
+	if (task) {
+		err = down_read_interruptible(&task->signal->exec_update_lock);
+		if (err)
+			goto err_file;
+
+		/*
+		 * Preserve ptrace permission check for backwards compatibility.
+		 *
+		 * We must hold exec_update_lock across this and any potential
+		 * perf_install_in_context() call for this new event to
+		 * serialize against exec() altering our credentials (and the
+		 * perf_event_exit_task() that could imply).
+		 */
+		err = -EACCES;
+		if (!ptrace_may_access(task, PTRACE_MODE_READ_REALCREDS))
+			goto err_cred;
+	}
+
 	if (move_group) {
 		gctx = __perf_event_ctx_lock_double(group_leader, ctx);
 
@@ -11298,7 +11298,7 @@ SYSCALL_DEFINE5(perf_event_open,
 	mutex_unlock(&ctx->mutex);
 
 	if (task) {
-		mutex_unlock(&task->signal->exec_update_mutex);
+		up_read(&task->signal->exec_update_lock);
 		put_task_struct(task);
 	}
 
@@ -11320,7 +11320,10 @@ err_locked:
 	if (move_group)
 		perf_event_ctx_unlock(group_leader, gctx);
 	mutex_unlock(&ctx->mutex);
-/* err_file: */
+err_cred:
+	if (task)
+		up_read(&task->signal->exec_update_lock);
+err_file:
 	fput(event_file);
 err_context:
 	perf_unpin_context(ctx);
@@ -11332,9 +11335,6 @@ err_alloc:
 	 */
 	if (!event_file)
 		free_event(event);
-err_cred:
-	if (task)
-		mutex_unlock(&task->signal->exec_update_mutex);
 err_task:
 	if (task)
 		put_task_struct(task);
@@ -11639,7 +11639,7 @@ static void perf_event_exit_task_context(struct task_struct *child, int ctxn)
 /*
  * When a child task exits, feed back event values to parent events.
  *
- * Can be called with exec_update_mutex held when called from
+ * Can be called with exec_update_lock held when called from
  * install_exec_creds().
  */
 void perf_event_exit_task(struct task_struct *child)
diff --git a/kernel/fork.c b/kernel/fork.c
index 419fff8eb9e5..50f37d5afb32 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1221,7 +1221,7 @@ struct mm_struct *mm_access(struct task_struct *task, unsigned int mode)
 	struct mm_struct *mm;
 	int err;
 
-	err =  mutex_lock_killable(&task->signal->exec_update_mutex);
+	err =  down_read_killable(&task->signal->exec_update_lock);
 	if (err)
 		return ERR_PTR(err);
 
@@ -1231,7 +1231,7 @@ struct mm_struct *mm_access(struct task_struct *task, unsigned int mode)
 		mmput(mm);
 		mm = ERR_PTR(-EACCES);
 	}
-	mutex_unlock(&task->signal->exec_update_mutex);
+	up_read(&task->signal->exec_update_lock);
 
 	return mm;
 }
@@ -1586,7 +1586,7 @@ static int copy_signal(unsigned long clone_flags, struct task_struct *tsk)
 	sig->oom_score_adj_min = current->signal->oom_score_adj_min;
 
 	mutex_init(&sig->cred_guard_mutex);
-	mutex_init(&sig->exec_update_mutex);
+	init_rwsem(&sig->exec_update_lock);
 
 	return 0;
 }
diff --git a/kernel/kcmp.c b/kernel/kcmp.c
index b3ff9288c6cc..c0d2ad9b4705 100644
--- a/kernel/kcmp.c
+++ b/kernel/kcmp.c
@@ -75,25 +75,25 @@ get_file_raw_ptr(struct task_struct *task, unsigned int idx)
 	return file;
 }
 
-static void kcmp_unlock(struct mutex *m1, struct mutex *m2)
+static void kcmp_unlock(struct rw_semaphore *l1, struct rw_semaphore *l2)
 {
-	if (likely(m2 != m1))
-		mutex_unlock(m2);
-	mutex_unlock(m1);
+	if (likely(l2 != l1))
+		up_read(l2);
+	up_read(l1);
 }
 
-static int kcmp_lock(struct mutex *m1, struct mutex *m2)
+static int kcmp_lock(struct rw_semaphore *l1, struct rw_semaphore *l2)
 {
 	int err;
 
-	if (m2 > m1)
-		swap(m1, m2);
+	if (l2 > l1)
+		swap(l1, l2);
 
-	err = mutex_lock_killable(m1);
-	if (!err && likely(m1 != m2)) {
-		err = mutex_lock_killable_nested(m2, SINGLE_DEPTH_NESTING);
+	err = down_read_killable(l1);
+	if (!err && likely(l1 != l2)) {
+		err = down_read_killable_nested(l2, SINGLE_DEPTH_NESTING);
 		if (err)
-			mutex_unlock(m1);
+			up_read(l1);
 	}
 
 	return err;
@@ -173,8 +173,8 @@ SYSCALL_DEFINE5(kcmp, pid_t, pid1, pid_t, pid2, int, type,
 	/*
 	 * One should have enough rights to inspect task details.
 	 */
-	ret = kcmp_lock(&task1->signal->exec_update_mutex,
-			&task2->signal->exec_update_mutex);
+	ret = kcmp_lock(&task1->signal->exec_update_lock,
+			&task2->signal->exec_update_lock);
 	if (ret)
 		goto err;
 	if (!ptrace_may_access(task1, PTRACE_MODE_READ_REALCREDS) ||
@@ -229,8 +229,8 @@ SYSCALL_DEFINE5(kcmp, pid_t, pid1, pid_t, pid2, int, type,
 	}
 
 err_unlock:
-	kcmp_unlock(&task1->signal->exec_update_mutex,
-		    &task2->signal->exec_update_mutex);
+	kcmp_unlock(&task1->signal->exec_update_lock,
+		    &task2->signal->exec_update_lock);
 err:
 	put_task_struct(task1);
 	put_task_struct(task2);
diff --git a/kernel/locking/rwsem.c b/kernel/locking/rwsem.c
index baafa1dd9fcc..5d54ff3179b8 100644
--- a/kernel/locking/rwsem.c
+++ b/kernel/locking/rwsem.c
@@ -1348,6 +1348,18 @@ inline void __down_read(struct rw_semaphore *sem)
 	}
 }
 
+static inline int __down_read_interruptible(struct rw_semaphore *sem)
+{
+	if (!rwsem_read_trylock(sem)) {
+		if (IS_ERR(rwsem_down_read_slowpath(sem, TASK_INTERRUPTIBLE)))
+			return -EINTR;
+		DEBUG_RWSEMS_WARN_ON(!is_rwsem_reader_owned(sem), sem);
+	} else {
+		rwsem_set_reader_owned(sem);
+	}
+	return 0;
+}
+
 static inline int __down_read_killable(struct rw_semaphore *sem)
 {
 	if (!rwsem_read_trylock(sem)) {
@@ -1498,6 +1510,20 @@ void __sched down_read(struct rw_semaphore *sem)
 }
 EXPORT_SYMBOL(down_read);
 
+int __sched down_read_interruptible(struct rw_semaphore *sem)
+{
+	might_sleep();
+	rwsem_acquire_read(&sem->dep_map, 0, 0, _RET_IP_);
+
+	if (LOCK_CONTENDED_RETURN(sem, __down_read_trylock, __down_read_interruptible)) {
+		rwsem_release(&sem->dep_map, 1, _RET_IP_);
+		return -EINTR;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(down_read_interruptible);
+
 int __sched down_read_killable(struct rw_semaphore *sem)
 {
 	might_sleep();
@@ -1608,6 +1634,20 @@ void down_read_nested(struct rw_semaphore *sem, int subclass)
 }
 EXPORT_SYMBOL(down_read_nested);
 
+int down_read_killable_nested(struct rw_semaphore *sem, int subclass)
+{
+	might_sleep();
+	rwsem_acquire_read(&sem->dep_map, subclass, 0, _RET_IP_);
+
+	if (LOCK_CONTENDED_RETURN(sem, __down_read_trylock, __down_read_killable)) {
+		rwsem_release(&sem->dep_map, 1, _RET_IP_);
+		return -EINTR;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(down_read_killable_nested);
+
 void _down_write_nest_lock(struct rw_semaphore *sem, struct lockdep_map *nest)
 {
 	might_sleep();
diff --git a/kernel/module.c b/kernel/module.c
index 45513909b01d..9e9af40698ff 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -1863,7 +1863,6 @@ static int mod_sysfs_init(struct module *mod)
 	if (err)
 		mod_kobject_put(mod);
 
-	/* delay uevent until full sysfs population */
 out:
 	return err;
 }
@@ -1900,7 +1899,6 @@ static int mod_sysfs_setup(struct module *mod,
 	add_sect_attrs(mod, info);
 	add_notes_attrs(mod, info);
 
-	kobject_uevent(&mod->mkobj.kobj, KOBJ_ADD);
 	return 0;
 
 out_unreg_modinfo_attrs:
@@ -3608,6 +3606,9 @@ static noinline int do_init_module(struct module *mod)
 	blocking_notifier_call_chain(&module_notify_list,
 				     MODULE_STATE_LIVE, mod);
 
+	/* Delay uevent until module has finished its init routine */
+	kobject_uevent(&mod->mkobj.kobj, KOBJ_ADD);
+
 	/*
 	 * We need to finish all async code before the module init sequence
 	 * is done.  This has potential to deadlock.  For example, a newly
@@ -3953,6 +3954,7 @@ static int load_module(struct load_info *info, const char __user *uargs,
 				     MODULE_STATE_GOING, mod);
 	klp_module_going(mod);
  bug_cleanup:
+	mod->state = MODULE_STATE_GOING;
 	/* module_bug_cleanup needs module_mutex protection */
 	mutex_lock(&module_mutex);
 	module_bug_cleanup(mod);
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index 5c9fcc72460d..4419486d7413 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -916,13 +916,6 @@ static bool can_stop_idle_tick(int cpu, struct tick_sched *ts)
 		 */
 		if (tick_do_timer_cpu == cpu)
 			return false;
-		/*
-		 * Boot safety: make sure the timekeeping duty has been
-		 * assigned before entering dyntick-idle mode,
-		 * tick_do_timer_cpu is TICK_DO_TIMER_BOOT
-		 */
-		if (unlikely(tick_do_timer_cpu == TICK_DO_TIMER_BOOT))
-			return false;
 
 		/* Should not happen for nohz-full */
 		if (WARN_ON_ONCE(tick_do_timer_cpu == TICK_DO_TIMER_NONE))
diff --git a/net/sched/sch_taprio.c b/net/sched/sch_taprio.c
index 2b797a71e9bd..f2b1305e79d2 100644
--- a/net/sched/sch_taprio.c
+++ b/net/sched/sch_taprio.c
@@ -1597,6 +1597,21 @@ free_sched:
 	return err;
 }
 
+static void taprio_reset(struct Qdisc *sch)
+{
+	struct taprio_sched *q = qdisc_priv(sch);
+	struct net_device *dev = qdisc_dev(sch);
+	int i;
+
+	hrtimer_cancel(&q->advance_timer);
+	if (q->qdiscs) {
+		for (i = 0; i < dev->num_tx_queues && q->qdiscs[i]; i++)
+			qdisc_reset(q->qdiscs[i]);
+	}
+	sch->qstats.backlog = 0;
+	sch->q.qlen = 0;
+}
+
 static void taprio_destroy(struct Qdisc *sch)
 {
 	struct taprio_sched *q = qdisc_priv(sch);
@@ -1607,7 +1622,6 @@ static void taprio_destroy(struct Qdisc *sch)
 	list_del(&q->taprio_list);
 	spin_unlock(&taprio_list_lock);
 
-	hrtimer_cancel(&q->advance_timer);
 
 	taprio_disable_offload(dev, q, NULL);
 
@@ -1954,6 +1968,7 @@ static struct Qdisc_ops taprio_qdisc_ops __read_mostly = {
 	.init		= taprio_init,
 	.change		= taprio_change,
 	.destroy	= taprio_destroy,
+	.reset		= taprio_reset,
 	.peek		= taprio_peek,
 	.dequeue	= taprio_dequeue,
 	.enqueue	= taprio_enqueue,
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index ec501fbaabe4..0c5b7a54ca81 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -717,8 +717,13 @@ static int snd_pcm_hw_params(struct snd_pcm_substream *substream,
 		runtime->boundary *= 2;
 
 	/* clear the buffer for avoiding possible kernel info leaks */
-	if (runtime->dma_area && !substream->ops->copy_user)
-		memset(runtime->dma_area, 0, runtime->dma_bytes);
+	if (runtime->dma_area && !substream->ops->copy_user) {
+		size_t size = runtime->dma_bytes;
+
+		if (runtime->info & SNDRV_PCM_INFO_MMAP)
+			size = PAGE_ALIGN(size);
+		memset(runtime->dma_area, 0, size);
+	}
 
 	snd_pcm_timer_resolution_change(substream);
 	snd_pcm_set_state(substream, SNDRV_PCM_STATE_SETUP);
diff --git a/sound/core/rawmidi.c b/sound/core/rawmidi.c
index 94db4683cfaf..6a3543b8455f 100644
--- a/sound/core/rawmidi.c
+++ b/sound/core/rawmidi.c
@@ -72,11 +72,21 @@ static inline unsigned short snd_rawmidi_file_flags(struct file *file)
 	}
 }
 
-static inline int snd_rawmidi_ready(struct snd_rawmidi_substream *substream)
+static inline bool __snd_rawmidi_ready(struct snd_rawmidi_runtime *runtime)
+{
+	return runtime->avail >= runtime->avail_min;
+}
+
+static bool snd_rawmidi_ready(struct snd_rawmidi_substream *substream)
 {
 	struct snd_rawmidi_runtime *runtime = substream->runtime;
+	unsigned long flags;
+	bool ready;
 
-	return runtime->avail >= runtime->avail_min;
+	spin_lock_irqsave(&runtime->lock, flags);
+	ready = __snd_rawmidi_ready(runtime);
+	spin_unlock_irqrestore(&runtime->lock, flags);
+	return ready;
 }
 
 static inline int snd_rawmidi_ready_append(struct snd_rawmidi_substream *substream,
@@ -945,7 +955,7 @@ int snd_rawmidi_receive(struct snd_rawmidi_substream *substream,
 	if (result > 0) {
 		if (runtime->event)
 			schedule_work(&runtime->event_work);
-		else if (snd_rawmidi_ready(substream))
+		else if (__snd_rawmidi_ready(runtime))
 			wake_up(&runtime->sleep);
 	}
 	spin_unlock_irqrestore(&runtime->lock, flags);
@@ -1024,7 +1034,7 @@ static ssize_t snd_rawmidi_read(struct file *file, char __user *buf, size_t coun
 	result = 0;
 	while (count > 0) {
 		spin_lock_irq(&runtime->lock);
-		while (!snd_rawmidi_ready(substream)) {
+		while (!__snd_rawmidi_ready(runtime)) {
 			wait_queue_entry_t wait;
 
 			if ((file->f_flags & O_NONBLOCK) != 0 || result > 0) {
@@ -1041,9 +1051,11 @@ static ssize_t snd_rawmidi_read(struct file *file, char __user *buf, size_t coun
 				return -ENODEV;
 			if (signal_pending(current))
 				return result > 0 ? result : -ERESTARTSYS;
-			if (!runtime->avail)
-				return result > 0 ? result : -EIO;
 			spin_lock_irq(&runtime->lock);
+			if (!runtime->avail) {
+				spin_unlock_irq(&runtime->lock);
+				return result > 0 ? result : -EIO;
+			}
 		}
 		spin_unlock_irq(&runtime->lock);
 		count1 = snd_rawmidi_kernel_read1(substream,
@@ -1181,7 +1193,7 @@ int __snd_rawmidi_transmit_ack(struct snd_rawmidi_substream *substream, int coun
 	runtime->avail += count;
 	substream->bytes += count;
 	if (count > 0) {
-		if (runtime->drain || snd_rawmidi_ready(substream))
+		if (runtime->drain || __snd_rawmidi_ready(runtime))
 			wake_up(&runtime->sleep);
 	}
 	return count;
@@ -1370,9 +1382,11 @@ static ssize_t snd_rawmidi_write(struct file *file, const char __user *buf,
 				return -ENODEV;
 			if (signal_pending(current))
 				return result > 0 ? result : -ERESTARTSYS;
-			if (!runtime->avail && !timeout)
-				return result > 0 ? result : -EIO;
 			spin_lock_irq(&runtime->lock);
+			if (!runtime->avail && !timeout) {
+				spin_unlock_irq(&runtime->lock);
+				return result > 0 ? result : -EIO;
+			}
 		}
 		spin_unlock_irq(&runtime->lock);
 		count1 = snd_rawmidi_kernel_write1(substream, buf, NULL, count);
@@ -1452,6 +1466,7 @@ static void snd_rawmidi_proc_info_read(struct snd_info_entry *entry,
 	struct snd_rawmidi *rmidi;
 	struct snd_rawmidi_substream *substream;
 	struct snd_rawmidi_runtime *runtime;
+	unsigned long buffer_size, avail, xruns;
 
 	rmidi = entry->private_data;
 	snd_iprintf(buffer, "%s\n\n", rmidi->name);
@@ -1470,13 +1485,16 @@ static void snd_rawmidi_proc_info_read(struct snd_info_entry *entry,
 				    "  Owner PID    : %d\n",
 				    pid_vnr(substream->pid));
 				runtime = substream->runtime;
+				spin_lock_irq(&runtime->lock);
+				buffer_size = runtime->buffer_size;
+				avail = runtime->avail;
+				spin_unlock_irq(&runtime->lock);
 				snd_iprintf(buffer,
 				    "  Mode         : %s\n"
 				    "  Buffer size  : %lu\n"
 				    "  Avail        : %lu\n",
 				    runtime->oss ? "OSS compatible" : "native",
-				    (unsigned long) runtime->buffer_size,
-				    (unsigned long) runtime->avail);
+				    buffer_size, avail);
 			}
 		}
 	}
@@ -1494,13 +1512,16 @@ static void snd_rawmidi_proc_info_read(struct snd_info_entry *entry,
 					    "  Owner PID    : %d\n",
 					    pid_vnr(substream->pid));
 				runtime = substream->runtime;
+				spin_lock_irq(&runtime->lock);
+				buffer_size = runtime->buffer_size;
+				avail = runtime->avail;
+				xruns = runtime->xruns;
+				spin_unlock_irq(&runtime->lock);
 				snd_iprintf(buffer,
 					    "  Buffer size  : %lu\n"
 					    "  Avail        : %lu\n"
 					    "  Overruns     : %lu\n",
-					    (unsigned long) runtime->buffer_size,
-					    (unsigned long) runtime->avail,
-					    (unsigned long) runtime->xruns);
+					    buffer_size, avail, xruns);
 			}
 		}
 	}
diff --git a/sound/core/seq/seq_queue.h b/sound/core/seq/seq_queue.h
index 9254c8dbe5e3..25d2d6b61007 100644
--- a/sound/core/seq/seq_queue.h
+++ b/sound/core/seq/seq_queue.h
@@ -26,10 +26,10 @@ struct snd_seq_queue {
 	
 	struct snd_seq_timer *timer;	/* time keeper for this queue */
 	int	owner;		/* client that 'owns' the timer */
-	unsigned int	locked:1,	/* timer is only accesibble by owner if set */
-		klocked:1,	/* kernel lock (after START) */	
-		check_again:1,
-		check_blocked:1;
+	bool	locked;		/* timer is only accesibble by owner if set */
+	bool	klocked;	/* kernel lock (after START) */
+	bool	check_again;	/* concurrent access happened during check */
+	bool	check_blocked;	/* queue being checked */
 
 	unsigned int flags;		/* status flags */
 	unsigned int info_flags;	/* info for sync */
diff --git a/tools/include/uapi/linux/const.h b/tools/include/uapi/linux/const.h
index 5ed721ad5b19..af2a44c08683 100644
--- a/tools/include/uapi/linux/const.h
+++ b/tools/include/uapi/linux/const.h
@@ -28,4 +28,9 @@
 #define _BITUL(x)	(_UL(1) << (x))
 #define _BITULL(x)	(_ULL(1) << (x))
 
+#define __ALIGN_KERNEL(x, a)		__ALIGN_KERNEL_MASK(x, (typeof(x))(a) - 1)
+#define __ALIGN_KERNEL_MASK(x, mask)	(((x) + (mask)) & ~(mask))
+
+#define __KERNEL_DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
+
 #endif /* _UAPI_LINUX_CONST_H */