Merge tag 'v6.17.8' into linux-6.17.ylinux-6.17.y

This is the 6.17.8 stable release

44 files changed, 391 insertions, 129 deletions

diff --git a/fs/9p/v9fs.c b/fs/9p/v9fs.c
index 77e9c4387c1d..a59c26cc3c7d 100644
--- a/fs/9p/v9fs.c
+++ b/fs/9p/v9fs.c
@@ -561,7 +561,7 @@ static ssize_t caches_show(struct kobject *kobj,
 	spin_lock(&v9fs_sessionlist_lock);
 	list_for_each_entry(v9ses, &v9fs_sessionlist, slist) {
 		if (v9ses->cachetag) {
-			n = snprintf(buf, limit, "%s\n", v9ses->cachetag);
+			n = snprintf(buf + count, limit, "%s\n", v9ses->cachetag);
 			if (n < 0) {
 				count = n;
 				break;
@@ -597,13 +597,16 @@ static const struct attribute_group v9fs_attr_group = {
 
 static int __init v9fs_sysfs_init(void)
 {
+	int ret;
+
 	v9fs_kobj = kobject_create_and_add("9p", fs_kobj);
 	if (!v9fs_kobj)
 		return -ENOMEM;
 
-	if (sysfs_create_group(v9fs_kobj, &v9fs_attr_group)) {
+	ret = sysfs_create_group(v9fs_kobj, &v9fs_attr_group);
+	if (ret) {
 		kobject_put(v9fs_kobj);
-		return -ENOMEM;
+		return ret;
 	}
 
 	return 0;
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index a1566df45be9..144e44199930 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -2167,6 +2167,14 @@ static noinline_for_stack void write_one_eb(struct extent_buffer *eb,
 		wbc_account_cgroup_owner(wbc, folio, range_len);
 		folio_unlock(folio);
 	}
+	/*
+	 * If the fs is already in error status, do not submit any writeback
+	 * but immediately finish it.
+	 */
+	if (unlikely(BTRFS_FS_ERROR(fs_info))) {
+		btrfs_bio_end_io(bbio, errno_to_blk_status(BTRFS_FS_ERROR(fs_info)));
+		return;
+	}
 	btrfs_submit_bbio(bbio, 0);
 }
 
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 204674934795..9f6dcae25218 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -2855,12 +2855,22 @@ static int btrfs_fallocate_update_isize(struct inode *inode,
 {
 	struct btrfs_trans_handle *trans;
 	struct btrfs_root *root = BTRFS_I(inode)->root;
+	u64 range_start;
+	u64 range_end;
 	int ret;
 	int ret2;
 
 	if (mode & FALLOC_FL_KEEP_SIZE || end <= i_size_read(inode))
 		return 0;
 
+	range_start = round_down(i_size_read(inode), root->fs_info->sectorsize);
+	range_end = round_up(end, root->fs_info->sectorsize);
+
+	ret = btrfs_inode_set_file_extent_range(BTRFS_I(inode), range_start,
+						range_end - range_start);
+	if (ret)
+		return ret;
+
 	trans = btrfs_start_transaction(root, 1);
 	if (IS_ERR(trans))
 		return PTR_ERR(trans);
diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index da102da169fd..4958c6b32429 100644
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -1539,8 +1539,10 @@ int btrfs_add_qgroup_relation(struct btrfs_trans_handle *trans, u64 src, u64 dst
 	ASSERT(prealloc);
 
 	/* Check the level of src and dst first */
-	if (btrfs_qgroup_level(src) >= btrfs_qgroup_level(dst))
+	if (btrfs_qgroup_level(src) >= btrfs_qgroup_level(dst)) {
+		kfree(prealloc);
 		return -EINVAL;
+	}
 
 	mutex_lock(&fs_info->qgroup_ioctl_lock);
 	if (!fs_info->quota_root) {
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index 32973c62c1a2..d18c0eaef9b7 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -1260,8 +1260,7 @@ static void ceph_async_unlink_cb(struct ceph_mds_client *mdsc,
 	spin_unlock(&fsc->async_unlink_conflict_lock);
 
 	spin_lock(&dentry->d_lock);
-	di->flags &= ~CEPH_DENTRY_ASYNC_UNLINK;
-	wake_up_bit(&di->flags, CEPH_DENTRY_ASYNC_UNLINK_BIT);
+	clear_and_wake_up_bit(CEPH_DENTRY_ASYNC_UNLINK_BIT, &di->flags);
 	spin_unlock(&dentry->d_lock);
 
 	synchronize_rcu();
diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 978acd3d4b32..d7b943feb932 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -579,8 +579,7 @@ static void wake_async_create_waiters(struct inode *inode,
 
 	spin_lock(&ci->i_ceph_lock);
 	if (ci->i_ceph_flags & CEPH_I_ASYNC_CREATE) {
-		ci->i_ceph_flags &= ~CEPH_I_ASYNC_CREATE;
-		wake_up_bit(&ci->i_ceph_flags, CEPH_ASYNC_CREATE_BIT);
+		clear_and_wake_up_bit(CEPH_ASYNC_CREATE_BIT, &ci->i_ceph_flags);
 
 		if (ci->i_ceph_flags & CEPH_I_ASYNC_CHECK_CAPS) {
 			ci->i_ceph_flags &= ~CEPH_I_ASYNC_CHECK_CAPS;
@@ -762,8 +761,7 @@ static int ceph_finish_async_create(struct inode *dir, struct inode *inode,
 	}
 
 	spin_lock(&dentry->d_lock);
-	di->flags &= ~CEPH_DENTRY_ASYNC_CREATE;
-	wake_up_bit(&di->flags, CEPH_DENTRY_ASYNC_CREATE_BIT);
+	clear_and_wake_up_bit(CEPH_DENTRY_ASYNC_CREATE_BIT, &di->flags);
 	spin_unlock(&dentry->d_lock);
 
 	return ret;
diff --git a/fs/ceph/ioctl.c b/fs/ceph/ioctl.c
index e861de3c79b9..15cde055f3da 100644
--- a/fs/ceph/ioctl.c
+++ b/fs/ceph/ioctl.c
@@ -246,21 +246,28 @@ static long ceph_ioctl_lazyio(struct file *file)
 	struct ceph_inode_info *ci = ceph_inode(inode);
 	struct ceph_mds_client *mdsc = ceph_inode_to_fs_client(inode)->mdsc;
 	struct ceph_client *cl = mdsc->fsc->client;
+	bool is_file_already_lazy = false;
 
+	spin_lock(&ci->i_ceph_lock);
 	if ((fi->fmode & CEPH_FILE_MODE_LAZY) == 0) {
-		spin_lock(&ci->i_ceph_lock);
 		fi->fmode |= CEPH_FILE_MODE_LAZY;
 		ci->i_nr_by_mode[ffs(CEPH_FILE_MODE_LAZY)]++;
 		__ceph_touch_fmode(ci, mdsc, fi->fmode);
-		spin_unlock(&ci->i_ceph_lock);
+	} else {
+		is_file_already_lazy = true;
+	}
+	spin_unlock(&ci->i_ceph_lock);
+
+	if (is_file_already_lazy) {
+		doutc(cl, "file %p %p %llx.%llx already lazy\n", file, inode,
+		      ceph_vinop(inode));
+	} else {
 		doutc(cl, "file %p %p %llx.%llx marked lazy\n", file, inode,
 		      ceph_vinop(inode));
 
 		ceph_check_caps(ci, 0);
-	} else {
-		doutc(cl, "file %p %p %llx.%llx already lazy\n", file, inode,
-		      ceph_vinop(inode));
 	}
+
 	return 0;
 }
 
diff --git a/fs/ceph/locks.c b/fs/ceph/locks.c
index ebf4ac0055dd..dd764f9c64b9 100644
--- a/fs/ceph/locks.c
+++ b/fs/ceph/locks.c
@@ -221,7 +221,10 @@ static int ceph_lock_wait_for_completion(struct ceph_mds_client *mdsc,
 	if (err && err != -ERESTARTSYS)
 		return err;
 
-	wait_for_completion_killable(&req->r_safe_completion);
+	err = wait_for_completion_killable(&req->r_safe_completion);
+	if (err)
+		return err;
+
 	return 0;
 }
 
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index 3bc72b47fe4d..3efbc11596e0 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -5649,11 +5649,19 @@ static int ceph_mds_auth_match(struct ceph_mds_client *mdsc,
 	u32 caller_uid = from_kuid(&init_user_ns, cred->fsuid);
 	u32 caller_gid = from_kgid(&init_user_ns, cred->fsgid);
 	struct ceph_client *cl = mdsc->fsc->client;
+	const char *fs_name = mdsc->fsc->mount_options->mds_namespace;
 	const char *spath = mdsc->fsc->mount_options->server_path;
 	bool gid_matched = false;
 	u32 gid, tlen, len;
 	int i, j;
 
+	doutc(cl, "fsname check fs_name=%s  match.fs_name=%s\n",
+	      fs_name, auth->match.fs_name ? auth->match.fs_name : "");
+	if (auth->match.fs_name && strcmp(auth->match.fs_name, fs_name)) {
+		/* fsname mismatch, try next one */
+		return 0;
+	}
+
 	doutc(cl, "match.uid %lld\n", auth->match.uid);
 	if (auth->match.uid != MDS_AUTH_UID_ANY) {
 		if (auth->match.uid != caller_uid)
diff --git a/fs/ceph/mdsmap.c b/fs/ceph/mdsmap.c
index 8109aba66e02..2c7b151a7c95 100644
--- a/fs/ceph/mdsmap.c
+++ b/fs/ceph/mdsmap.c
@@ -353,10 +353,22 @@ struct ceph_mdsmap *ceph_mdsmap_decode(struct ceph_mds_client *mdsc, void **p,
 		__decode_and_drop_type(p, end, u8, bad_ext);
 	}
 	if (mdsmap_ev >= 8) {
+		u32 fsname_len;
 		/* enabled */
 		ceph_decode_8_safe(p, end, m->m_enabled, bad_ext);
 		/* fs_name */
-		ceph_decode_skip_string(p, end, bad_ext);
+		ceph_decode_32_safe(p, end, fsname_len, bad_ext);
+
+		/* validate fsname against mds_namespace */
+		if (!namespace_equals(mdsc->fsc->mount_options, *p,
+				      fsname_len)) {
+			pr_warn_client(cl, "fsname %*pE doesn't match mds_namespace %s\n",
+				       (int)fsname_len, (char *)*p,
+				       mdsc->fsc->mount_options->mds_namespace);
+			goto bad;
+		}
+		/* skip fsname after validation */
+		ceph_decode_skip_n(p, end, fsname_len, bad);
 	}
 	/* damaged */
 	if (mdsmap_ev >= 9) {
diff --git a/fs/ceph/super.c b/fs/ceph/super.c
index c3eb651862c5..ebef5244ae25 100644
--- a/fs/ceph/super.c
+++ b/fs/ceph/super.c
@@ -246,20 +246,6 @@ static void canonicalize_path(char *path)
 	path[j] = '\0';
 }
 
-/*
- * Check if the mds namespace in ceph_mount_options matches
- * the passed in namespace string. First time match (when
- * ->mds_namespace is NULL) is treated specially, since
- * ->mds_namespace needs to be initialized by the caller.
- */
-static int namespace_equals(struct ceph_mount_options *fsopt,
-			    const char *namespace, size_t len)
-{
-	return !(fsopt->mds_namespace &&
-		 (strlen(fsopt->mds_namespace) != len ||
-		  strncmp(fsopt->mds_namespace, namespace, len)));
-}
-
 static int ceph_parse_old_source(const char *dev_name, const char *dev_name_end,
 				 struct fs_context *fc)
 {
diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index cf176aab0f82..4ac6561285b1 100644
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -104,6 +104,20 @@ struct ceph_mount_options {
 	struct fscrypt_dummy_policy dummy_enc_policy;
 };
 
+/*
+ * Check if the mds namespace in ceph_mount_options matches
+ * the passed in namespace string. First time match (when
+ * ->mds_namespace is NULL) is treated specially, since
+ * ->mds_namespace needs to be initialized by the caller.
+ */
+static inline int namespace_equals(struct ceph_mount_options *fsopt,
+				   const char *namespace, size_t len)
+{
+	return !(fsopt->mds_namespace &&
+		 (strlen(fsopt->mds_namespace) != len ||
+		  strncmp(fsopt->mds_namespace, namespace, len)));
+}
+
 /* mount state */
 enum {
 	CEPH_MOUNT_MOUNTING,
diff --git a/fs/crypto/inline_crypt.c b/fs/crypto/inline_crypt.c
index caaff809765b..45dea07f37a2 100644
--- a/fs/crypto/inline_crypt.c
+++ b/fs/crypto/inline_crypt.c
@@ -333,8 +333,7 @@ static bool bh_get_inode_and_lblk_num(const struct buffer_head *bh,
 	inode = mapping->host;
 
 	*inode_ret = inode;
-	*lblk_num_ret = ((u64)folio->index << (PAGE_SHIFT - inode->i_blkbits)) +
-			(bh_offset(bh) >> inode->i_blkbits);
+	*lblk_num_ret = (folio_pos(folio) + bh_offset(bh)) >> inode->i_blkbits;
 	return true;
 }
 
diff --git a/fs/exfat/balloc.c b/fs/exfat/balloc.c
index cc01556c9d9b..071448adbd5d 100644
--- a/fs/exfat/balloc.c
+++ b/fs/exfat/balloc.c
@@ -26,12 +26,55 @@
 /*
  *  Allocation Bitmap Management Functions
  */
+static bool exfat_test_bitmap_range(struct super_block *sb, unsigned int clu,
+		unsigned int count)
+{
+	struct exfat_sb_info *sbi = EXFAT_SB(sb);
+	unsigned int start = clu;
+	unsigned int end = clu + count;
+	unsigned int ent_idx, i, b;
+	unsigned int bit_offset, bits_to_check;
+	__le_long *bitmap_le;
+	unsigned long mask, word;
+
+	if (!is_valid_cluster(sbi, start) || !is_valid_cluster(sbi, end - 1))
+		return false;
+
+	while (start < end) {
+		ent_idx = CLUSTER_TO_BITMAP_ENT(start);
+		i = BITMAP_OFFSET_SECTOR_INDEX(sb, ent_idx);
+		b = BITMAP_OFFSET_BIT_IN_SECTOR(sb, ent_idx);
+
+		bitmap_le = (__le_long *)sbi->vol_amap[i]->b_data;
+
+		/* Calculate how many bits we can check in the current word */
+		bit_offset = b % BITS_PER_LONG;
+		bits_to_check = min(end - start,
+				    (unsigned int)(BITS_PER_LONG - bit_offset));
+
+		/* Create a bitmask for the range of bits to check */
+		if (bits_to_check >= BITS_PER_LONG)
+			mask = ~0UL;
+		else
+			mask = ((1UL << bits_to_check) - 1) << bit_offset;
+		word = lel_to_cpu(bitmap_le[b / BITS_PER_LONG]);
+
+		/* Check if all bits in the mask are set */
+		if ((word & mask) != mask)
+			return false;
+
+		start += bits_to_check;
+	}
+
+	return true;
+}
+
 static int exfat_allocate_bitmap(struct super_block *sb,
 		struct exfat_dentry *ep)
 {
 	struct exfat_sb_info *sbi = EXFAT_SB(sb);
 	long long map_size;
-	unsigned int i, need_map_size;
+	unsigned int i, j, need_map_size;
 	sector_t sector;
 
 	sbi->map_clu = le32_to_cpu(ep->dentry.bitmap.start_clu);
@@ -58,20 +101,25 @@ static int exfat_allocate_bitmap(struct super_block *sb,
 	sector = exfat_cluster_to_sector(sbi, sbi->map_clu);
 	for (i = 0; i < sbi->map_sectors; i++) {
 		sbi->vol_amap[i] = sb_bread(sb, sector + i);
-		if (!sbi->vol_amap[i]) {
-			/* release all buffers and free vol_amap */
-			int j = 0;
-
-			while (j < i)
-				brelse(sbi->vol_amap[j++]);
-
-			kvfree(sbi->vol_amap);
-			sbi->vol_amap = NULL;
-			return -EIO;
-		}
+		if (!sbi->vol_amap[i])
+			goto err_out;
 	}
 
+	if (exfat_test_bitmap_range(sb, sbi->map_clu,
+		EXFAT_B_TO_CLU_ROUND_UP(map_size, sbi)) == false)
+		goto err_out;
+
 	return 0;
+
+err_out:
+	j = 0;
+	/* release all buffers and free vol_amap */
+	while (j < i)
+		brelse(sbi->vol_amap[j++]);
+
+	kvfree(sbi->vol_amap);
+	sbi->vol_amap = NULL;
+	return -EIO;
 }
 
 int exfat_load_bitmap(struct super_block *sb)
diff --git a/fs/exfat/fatent.c b/fs/exfat/fatent.c
index 232cc7f8ab92..825083634ba2 100644
--- a/fs/exfat/fatent.c
+++ b/fs/exfat/fatent.c
@@ -89,35 +89,36 @@ int exfat_ent_get(struct super_block *sb, unsigned int loc,
 	int err;
 
 	if (!is_valid_cluster(sbi, loc)) {
-		exfat_fs_error(sb, "invalid access to FAT (entry 0x%08x)",
+		exfat_fs_error_ratelimit(sb,
+			"invalid access to FAT (entry 0x%08x)",
 			loc);
 		return -EIO;
 	}
 
 	err = __exfat_ent_get(sb, loc, content);
 	if (err) {
-		exfat_fs_error(sb,
+		exfat_fs_error_ratelimit(sb,
 			"failed to access to FAT (entry 0x%08x, err:%d)",
 			loc, err);
 		return err;
 	}
 
 	if (*content == EXFAT_FREE_CLUSTER) {
-		exfat_fs_error(sb,
+		exfat_fs_error_ratelimit(sb,
 			"invalid access to FAT free cluster (entry 0x%08x)",
 			loc);
 		return -EIO;
 	}
 
 	if (*content == EXFAT_BAD_CLUSTER) {
-		exfat_fs_error(sb,
+		exfat_fs_error_ratelimit(sb,
 			"invalid access to FAT bad cluster (entry 0x%08x)",
 			loc);
 		return -EIO;
 	}
 
 	if (*content != EXFAT_EOF_CLUSTER && !is_valid_cluster(sbi, *content)) {
-		exfat_fs_error(sb,
+		exfat_fs_error_ratelimit(sb,
 			"invalid access to FAT (entry 0x%08x) bogus content (0x%08x)",
 			loc, *content);
 		return -EIO;
diff --git a/fs/ext4/fast_commit.c b/fs/ext4/fast_commit.c
index 42bee1d4f9f9..fa66b08de999 100644
--- a/fs/ext4/fast_commit.c
+++ b/fs/ext4/fast_commit.c
@@ -663,7 +663,7 @@ void ext4_fc_track_range(handle_t *handle, struct inode *inode, ext4_lblk_t star
 
 static void ext4_fc_submit_bh(struct super_block *sb, bool is_tail)
 {
-	blk_opf_t write_flags = REQ_SYNC;
+	blk_opf_t write_flags = JBD2_JOURNAL_REQ_FLAGS;
 	struct buffer_head *bh = EXT4_SB(sb)->s_fc_bh;
 
 	/* Add REQ_FUA | REQ_PREFLUSH only its tail */
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index b0e60a44dae9..ce7253b3f549 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -1535,7 +1535,7 @@ ext4_xattr_inode_cache_find(struct inode *inode, const void *value,
 	WARN_ON_ONCE(ext4_handle_valid(journal_current_handle()) &&
 		     !(current->flags & PF_MEMALLOC_NOFS));
 
-	ea_data = kvmalloc(value_len, GFP_KERNEL);
+	ea_data = kvmalloc(value_len, GFP_NOFS);
 	if (!ea_data) {
 		mb_cache_entry_put(ea_inode_cache, ce);
 		return NULL;
diff --git a/fs/f2fs/extent_cache.c b/fs/f2fs/extent_cache.c
index 199c1e7a83ef..ba0a07bfd346 100644
--- a/fs/f2fs/extent_cache.c
+++ b/fs/f2fs/extent_cache.c
@@ -604,7 +604,13 @@ static struct extent_node *__insert_extent_tree(struct f2fs_sb_info *sbi,
 			p = &(*p)->rb_right;
 			leftmost = false;
 		} else {
+			f2fs_err_ratelimited(sbi, "%s: corrupted extent, type: %d, "
+				"extent node in rb tree [%u, %u, %u], age [%llu, %llu], "
+				"extent node to insert [%u, %u, %u], age [%llu, %llu]",
+				__func__, et->type, en->ei.fofs, en->ei.blk, en->ei.len, en->ei.age,
+				en->ei.last_blocks, ei->fofs, ei->blk, ei->len, ei->age, ei->last_blocks);
 			f2fs_bug_on(sbi, 1);
+			return NULL;
 		}
 	}
 
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 92054dcbe20d..4254db453b2d 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -27,12 +27,17 @@ static struct kmem_cache *free_nid_slab;
 static struct kmem_cache *nat_entry_set_slab;
 static struct kmem_cache *fsync_node_entry_slab;
 
+static inline bool is_invalid_nid(struct f2fs_sb_info *sbi, nid_t nid)
+{
+	return nid < F2FS_ROOT_INO(sbi) || nid >= NM_I(sbi)->max_nid;
+}
+
 /*
  * Check whether the given nid is within node id range.
  */
 int f2fs_check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
 {
-	if (unlikely(nid < F2FS_ROOT_INO(sbi) || nid >= NM_I(sbi)->max_nid)) {
+	if (unlikely(is_invalid_nid(sbi, nid))) {
 		set_sbi_flag(sbi, SBI_NEED_FSCK);
 		f2fs_warn(sbi, "%s: out-of-range nid=%x, run fsck to fix.",
 			  __func__, nid);
@@ -2654,6 +2659,16 @@ retry:
 		f2fs_bug_on(sbi, list_empty(&nm_i->free_nid_list));
 		i = list_first_entry(&nm_i->free_nid_list,
 					struct free_nid, list);
+
+		if (unlikely(is_invalid_nid(sbi, i->nid))) {
+			spin_unlock(&nm_i->nid_list_lock);
+			f2fs_err(sbi, "Corrupted nid %u in free_nid_list",
+								i->nid);
+			f2fs_stop_checkpoint(sbi, false,
+					STOP_CP_REASON_CORRUPTED_NID);
+			return false;
+		}
+
 		*nid = i->nid;
 
 		__move_free_nid(sbi, i, FREE_NID, PREALLOC_NID);
diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
index f736052dea50..902ffb3faa1f 100644
--- a/fs/f2fs/sysfs.c
+++ b/fs/f2fs/sysfs.c
@@ -1723,12 +1723,15 @@ static int __maybe_unused disk_map_seq_show(struct seq_file *seq,
 	seq_printf(seq, " Main          : 0x%010x (%10d)\n",
 			SM_I(sbi)->main_blkaddr,
 			le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_main));
-	seq_printf(seq, " # of Sections : %12d\n",
-			le32_to_cpu(F2FS_RAW_SUPER(sbi)->section_count));
+	seq_printf(seq, " Block size    : %12lu KB\n", F2FS_BLKSIZE >> 10);
+	seq_printf(seq, " Segment size  : %12d MB\n",
+			(BLKS_PER_SEG(sbi) << (F2FS_BLKSIZE_BITS - 10)) >> 10);
 	seq_printf(seq, " Segs/Sections : %12d\n",
 			SEGS_PER_SEC(sbi));
 	seq_printf(seq, " Section size  : %12d MB\n",
-			SEGS_PER_SEC(sbi) << 1);
+			(BLKS_PER_SEC(sbi) << (F2FS_BLKSIZE_BITS - 10)) >> 10);
+	seq_printf(seq, " # of Sections : %12d\n",
+			le32_to_cpu(F2FS_RAW_SUPER(sbi)->section_count));
 
 	if (!f2fs_is_multi_device(sbi))
 		return 0;
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index dbf53c7bc853..612d4da6d7d9 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -322,6 +322,7 @@ unsigned int fuse_req_hash(u64 unique)
 {
 	return hash_long(unique & ~FUSE_INT_REQ_BIT, FUSE_PQ_HASH_BITS);
 }
+EXPORT_SYMBOL_GPL(fuse_req_hash);
 
 /*
  * A new request is available, wake fiq->waitq
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index 7ddfd2b3cc9c..7c0403a002e7 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -101,14 +101,11 @@ static struct inode *fuse_alloc_inode(struct super_block *sb)
 	if (!fi)
 		return NULL;
 
-	fi->i_time = 0;
+	/* Initialize private data (i.e. everything except fi->inode) */
+	BUILD_BUG_ON(offsetof(struct fuse_inode, inode) != 0);
+	memset((void *) fi + sizeof(fi->inode), 0, sizeof(*fi) - sizeof(fi->inode));
+
 	fi->inval_mask = ~0;
-	fi->nodeid = 0;
-	fi->nlookup = 0;
-	fi->attr_version = 0;
-	fi->orig_ino = 0;
-	fi->state = 0;
-	fi->submount_lookup = NULL;
 	mutex_init(&fi->mutex);
 	spin_lock_init(&fi->lock);
 	fi->forget = fuse_alloc_forget();
diff --git a/fs/fuse/virtio_fs.c b/fs/fuse/virtio_fs.c
index 76c8fd0bfc75..1751cd6e3d42 100644
--- a/fs/fuse/virtio_fs.c
+++ b/fs/fuse/virtio_fs.c
@@ -20,6 +20,7 @@
 #include <linux/cleanup.h>
 #include <linux/uio.h>
 #include "fuse_i.h"
+#include "fuse_dev_i.h"
 
 /* Used to help calculate the FUSE connection's max_pages limit for a request's
  * size. Parts of the struct fuse_req are sliced into scattergather lists in
@@ -1384,7 +1385,7 @@ static int virtio_fs_enqueue_req(struct virtio_fs_vq *fsvq,
 	unsigned int out_sgs = 0;
 	unsigned int in_sgs = 0;
 	unsigned int total_sgs;
-	unsigned int i;
+	unsigned int i, hash;
 	int ret;
 	bool notify;
 	struct fuse_pqueue *fpq;
@@ -1444,8 +1445,9 @@ static int virtio_fs_enqueue_req(struct virtio_fs_vq *fsvq,
 
 	/* Request successfully sent. */
 	fpq = &fsvq->fud->pq;
+	hash = fuse_req_hash(req->in.h.unique);
 	spin_lock(&fpq->lock);
-	list_add_tail(&req->list, fpq->processing);
+	list_add_tail(&req->list, &fpq->processing[hash]);
 	spin_unlock(&fpq->lock);
 	set_bit(FR_SENT, &req->flags);
 	/* matches barrier in request_wait_answer() */
diff --git a/fs/hpfs/namei.c b/fs/hpfs/namei.c
index e3cdc421dfba..353e13a615f5 100644
--- a/fs/hpfs/namei.c
+++ b/fs/hpfs/namei.c
@@ -52,8 +52,10 @@ static struct dentry *hpfs_mkdir(struct mnt_idmap *idmap, struct inode *dir,
 	dee.fnode = cpu_to_le32(fno);
 	dee.creation_date = dee.write_date = dee.read_date = cpu_to_le32(local_get_seconds(dir->i_sb));
 	result = new_inode(dir->i_sb);
-	if (!result)
+	if (!result) {
+		err = -ENOMEM;
 		goto bail2;
+	}
 	hpfs_init_inode(result);
 	result->i_ino = fno;
 	hpfs_i(result)->i_parent_dir = dir->i_ino;
@@ -153,9 +155,10 @@ static int hpfs_create(struct mnt_idmap *idmap, struct inode *dir,
 	dee.creation_date = dee.write_date = dee.read_date = cpu_to_le32(local_get_seconds(dir->i_sb));
 
 	result = new_inode(dir->i_sb);
-	if (!result)
+	if (!result) {
+		err = -ENOMEM;
 		goto bail1;
-	
+	}
 	hpfs_init_inode(result);
 	result->i_ino = fno;
 	result->i_mode |= S_IFREG;
@@ -239,9 +242,10 @@ static int hpfs_mknod(struct mnt_idmap *idmap, struct inode *dir,
 	dee.creation_date = dee.write_date = dee.read_date = cpu_to_le32(local_get_seconds(dir->i_sb));
 
 	result = new_inode(dir->i_sb);
-	if (!result)
+	if (!result) {
+		err = -ENOMEM;
 		goto bail1;
-
+	}
 	hpfs_init_inode(result);
 	result->i_ino = fno;
 	hpfs_i(result)->i_parent_dir = dir->i_ino;
@@ -314,8 +318,10 @@ static int hpfs_symlink(struct mnt_idmap *idmap, struct inode *dir,
 	dee.creation_date = dee.write_date = dee.read_date = cpu_to_le32(local_get_seconds(dir->i_sb));
 
 	result = new_inode(dir->i_sb);
-	if (!result)
+	if (!result) {
+		err = -ENOMEM;
 		goto bail1;
+	}
 	result->i_ino = fno;
 	hpfs_init_inode(result);
 	hpfs_i(result)->i_parent_dir = dir->i_ino;
diff --git a/fs/jfs/inode.c b/fs/jfs/inode.c
index fcedeb514e14..21f3d029da7d 100644
--- a/fs/jfs/inode.c
+++ b/fs/jfs/inode.c
@@ -59,9 +59,15 @@ struct inode *jfs_iget(struct super_block *sb, unsigned long ino)
 			 */
 			inode->i_link[inode->i_size] = '\0';
 		}
-	} else {
+	} else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
+		   S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
 		inode->i_op = &jfs_file_inode_operations;
 		init_special_inode(inode, inode->i_mode, inode->i_rdev);
+	} else {
+		printk(KERN_DEBUG "JFS: Invalid file type 0%04o for inode %lu.\n",
+		       inode->i_mode, inode->i_ino);
+		iget_failed(inode);
+		return ERR_PTR(-EIO);
 	}
 	unlock_new_inode(inode);
 	return inode;
diff --git a/fs/jfs/jfs_txnmgr.c b/fs/jfs/jfs_txnmgr.c
index be17e3c43582..7840a03e5bcb 100644
--- a/fs/jfs/jfs_txnmgr.c
+++ b/fs/jfs/jfs_txnmgr.c
@@ -272,14 +272,15 @@ int txInit(void)
 	if (TxBlock == NULL)
 		return -ENOMEM;
 
-	for (k = 1; k < nTxBlock - 1; k++) {
-		TxBlock[k].next = k + 1;
+	for (k = 0; k < nTxBlock; k++) {
 		init_waitqueue_head(&TxBlock[k].gcwait);
 		init_waitqueue_head(&TxBlock[k].waitor);
 	}
+
+	for (k = 1; k < nTxBlock - 1; k++) {
+		TxBlock[k].next = k + 1;
+	}
 	TxBlock[k].next = 0;
-	init_waitqueue_head(&TxBlock[k].gcwait);
-	init_waitqueue_head(&TxBlock[k].waitor);
 
 	TxAnchor.freetid = 1;
 	init_waitqueue_head(&TxAnchor.freewait);
diff --git a/fs/namespace.c b/fs/namespace.c
index c8c2376bb242..fa7c034ac4a6 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -2785,12 +2785,19 @@ static int do_lock_mount(struct path *path, struct pinned_mountpoint *pinned, bo
 	struct path under = {};
 	int err = -ENOENT;
 
+	if (unlikely(beneath) && !path_mounted(path))
+		return -EINVAL;
+
 	for (;;) {
 		struct mount *m = real_mount(mnt);
 
 		if (beneath) {
 			path_put(&under);
 			read_seqlock_excl(&mount_lock);
+			if (unlikely(!mnt_has_parent(m))) {
+				read_sequnlock_excl(&mount_lock);
+				return -EINVAL;
+			}
 			under.mnt = mntget(&m->mnt_parent->mnt);
 			under.dentry = dget(m->mnt_mountpoint);
 			read_sequnlock_excl(&mount_lock);
@@ -3462,8 +3469,6 @@ static bool mount_is_ancestor(const struct mount *p1, const struct mount *p2)
  * @to:   mount under which to mount
  * @mp:   mountpoint of @to
  *
- * - Make sure that @to->dentry is actually the root of a mount under
- *   which we can mount another mount.
  * - Make sure that nothing can be mounted beneath the caller's current
  *   root or the rootfs of the namespace.
  * - Make sure that the caller can unmount the topmost mount ensuring
@@ -3485,12 +3490,6 @@ static int can_move_mount_beneath(const struct path *from,
 		     *mnt_to = real_mount(to->mnt),
 		     *parent_mnt_to = mnt_to->mnt_parent;
 
-	if (!mnt_has_parent(mnt_to))
-		return -EINVAL;
-
-	if (!path_mounted(to))
-		return -EINVAL;
-
 	if (IS_MNT_LOCKED(mnt_to))
 		return -EINVAL;
 
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 611e6283c194..b76da06864e5 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -391,7 +391,9 @@ static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dent
 	*p++ = htonl(attrs);                           /* bitmap */
 	*p++ = htonl(12);             /* attribute buffer length */
 	*p++ = htonl(NF4DIR);
+	spin_lock(&dentry->d_lock);
 	p = xdr_encode_hyper(p, NFS_FILEID(d_inode(dentry->d_parent)));
+	spin_unlock(&dentry->d_lock);
 
 	readdir->pgbase = (char *)p - (char *)start;
 	readdir->count -= readdir->pgbase;
@@ -7872,10 +7874,10 @@ int nfs4_lock_delegation_recall(struct file_lock *fl, struct nfs4_state *state,
 		return err;
 	do {
 		err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW);
-		if (err != -NFS4ERR_DELAY)
+		if (err != -NFS4ERR_DELAY && err != -NFS4ERR_GRACE)
 			break;
 		ssleep(1);
-	} while (err == -NFS4ERR_DELAY);
+	} while (err == -NFS4ERR_DELAY || err == -NFSERR_GRACE);
 	return nfs4_handle_delegation_recall_error(server, state, stateid, fl, err);
 }
 
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 7612e977e80b..01179f7de322 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -2744,6 +2744,9 @@ out_error:
 	case -ENETUNREACH:
 		nfs_mark_client_ready(clp, -EIO);
 		break;
+	case -EINVAL:
+		nfs_mark_client_ready(clp, status);
+		break;
 	default:
 		ssleep(1);
 		break;
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index 7ae8e885d753..ebc8689e7781 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -988,10 +988,11 @@ nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 static void
 nfsd4_read_release(union nfsd4_op_u *u)
 {
-	if (u->read.rd_nf)
+	if (u->read.rd_nf) {
+		trace_nfsd_read_done(u->read.rd_rqstp, u->read.rd_fhp,
+				     u->read.rd_offset, u->read.rd_length);
 		nfsd_file_put(u->read.rd_nf);
-	trace_nfsd_read_done(u->read.rd_rqstp, u->read.rd_fhp,
-			     u->read.rd_offset, u->read.rd_length);
+	}
 }
 
 static __be32
@@ -2858,10 +2859,20 @@ nfsd4_proc_compound(struct svc_rqst *rqstp)
 
 	rqstp->rq_lease_breaker = (void **)&cstate->clp;
 
-	trace_nfsd_compound(rqstp, args->tag, args->taglen, args->opcnt);
+	trace_nfsd_compound(rqstp, args->tag, args->taglen, args->client_opcnt);
 	while (!status && resp->opcnt < args->opcnt) {
 		op = &args->ops[resp->opcnt++];
 
+		if (unlikely(resp->opcnt == NFSD_MAX_OPS_PER_COMPOUND)) {
+			/* If there are still more operations to process,
+			 * stop here and report NFS4ERR_RESOURCE. */
+			if (cstate->minorversion == 0 &&
+			    args->client_opcnt > resp->opcnt) {
+				op->status = nfserr_resource;
+				goto encode_op;
+			}
+		}
+
 		/*
 		 * The XDR decode routines may have pre-set op->status;
 		 * for example, if there is a miscellaneous XDR error
@@ -2938,7 +2949,7 @@ encode_op:
 			status = op->status;
 		}
 
-		trace_nfsd_compound_status(args->opcnt, resp->opcnt,
+		trace_nfsd_compound_status(args->client_opcnt, resp->opcnt,
 					   status, nfsd4_op_name(op->opnum));
 
 		nfsd4_cstate_clear_replay(cstate);
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 205ee8cc6fa2..a3fb6caa95f9 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -3865,6 +3865,7 @@ static __be32 check_forechannel_attrs(struct nfsd4_channel_attrs *ca, struct nfs
 	ca->headerpadsz = 0;
 	ca->maxreq_sz = min_t(u32, ca->maxreq_sz, maxrpc);
 	ca->maxresp_sz = min_t(u32, ca->maxresp_sz, maxrpc);
+	ca->maxops = min_t(u32, ca->maxops, NFSD_MAX_OPS_PER_COMPOUND);
 	ca->maxresp_cached = min_t(u32, ca->maxresp_cached,
 			NFSD_SLOT_CACHE_SIZE + NFSD_MIN_HDR_SEQ_SZ);
 	ca->maxreqs = min_t(u32, ca->maxreqs, NFSD_MAX_SLOTS_PER_SESSION);
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 89cc970effbc..1f6c3db3bc6e 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -2488,8 +2488,10 @@ nfsd4_decode_compound(struct nfsd4_compoundargs *argp)
 
 	if (xdr_stream_decode_u32(argp->xdr, &argp->minorversion) < 0)
 		return false;
-	if (xdr_stream_decode_u32(argp->xdr, &argp->opcnt) < 0)
+	if (xdr_stream_decode_u32(argp->xdr, &argp->client_opcnt) < 0)
 		return false;
+	argp->opcnt = min_t(u32, argp->client_opcnt,
+			    NFSD_MAX_OPS_PER_COMPOUND);
 
 	if (argp->opcnt > ARRAY_SIZE(argp->iops)) {
 		argp->ops = vcalloc(argp->opcnt, sizeof(*argp->ops));
@@ -2939,6 +2941,12 @@ struct nfsd4_fattr_args {
 typedef __be32(*nfsd4_enc_attr)(struct xdr_stream *xdr,
 				const struct nfsd4_fattr_args *args);
 
+static __be32 nfsd4_encode_fattr4__inval(struct xdr_stream *xdr,
+					 const struct nfsd4_fattr_args *args)
+{
+	return nfserr_inval;
+}
+
 static __be32 nfsd4_encode_fattr4__noop(struct xdr_stream *xdr,
 					const struct nfsd4_fattr_args *args)
 {
@@ -3560,6 +3568,8 @@ static const nfsd4_enc_attr nfsd4_enc_fattr4_encode_ops[] = {
 
 	[FATTR4_MODE_UMASK]		= nfsd4_encode_fattr4__noop,
 	[FATTR4_XATTR_SUPPORT]		= nfsd4_encode_fattr4_xattr_support,
+	[FATTR4_TIME_DELEG_ACCESS]	= nfsd4_encode_fattr4__inval,
+	[FATTR4_TIME_DELEG_MODIFY]	= nfsd4_encode_fattr4__inval,
 	[FATTR4_OPEN_ARGUMENTS]		= nfsd4_encode_fattr4_open_arguments,
 };
 
diff --git a/fs/nfsd/nfsd.h b/fs/nfsd/nfsd.h
index 1cd0bed57bc2..ab22a4cef621 100644
--- a/fs/nfsd/nfsd.h
+++ b/fs/nfsd/nfsd.h
@@ -57,6 +57,9 @@ struct readdir_cd {
 	__be32			err;	/* 0, nfserr, or nfserr_eof */
 };
 
+/* Maximum number of operations per session compound */
+#define NFSD_MAX_OPS_PER_COMPOUND	200
+
 struct nfsd_genl_rqstp {
 	struct sockaddr		rq_daddr;
 	struct sockaddr		rq_saddr;
diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h
index d4b48602b2b0..ee0570cbdd9e 100644
--- a/fs/nfsd/xdr4.h
+++ b/fs/nfsd/xdr4.h
@@ -903,6 +903,7 @@ struct nfsd4_compoundargs {
 	char *				tag;
 	u32				taglen;
 	u32				minorversion;
+	u32				client_opcnt;
 	u32				opcnt;
 	bool				splice_ok;
 	struct nfsd4_op			*ops;
diff --git a/fs/ntfs3/inode.c b/fs/ntfs3/inode.c
index 37cbbee7fa58..b08b00912165 100644
--- a/fs/ntfs3/inode.c
+++ b/fs/ntfs3/inode.c
@@ -471,6 +471,7 @@ end_enum:
 		   fname->home.seq == cpu_to_le16(MFT_REC_EXTEND)) {
 		/* Records in $Extend are not a files or general directories. */
 		inode->i_op = &ntfs_file_inode_operations;
+		mode = S_IFREG;
 	} else {
 		err = -EINVAL;
 		goto out;
diff --git a/fs/open.c b/fs/open.c
index 9655158c3885..4890b13461c7 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -1059,18 +1059,20 @@ EXPORT_SYMBOL(finish_open);
  * finish_no_open - finish ->atomic_open() without opening the file
  *
  * @file: file pointer
- * @dentry: dentry or NULL (as returned from ->lookup())
+ * @dentry: dentry, ERR_PTR(-E...) or NULL (as returned from ->lookup())
  *
- * This can be used to set the result of a successful lookup in ->atomic_open().
+ * This can be used to set the result of a lookup in ->atomic_open().
  *
  * NB: unlike finish_open() this function does consume the dentry reference and
  * the caller need not dput() it.
  *
- * Returns "0" which must be the return value of ->atomic_open() after having
- * called this function.
+ * Returns 0 or -E..., which must be the return value of ->atomic_open() after
+ * having called this function.
  */
 int finish_no_open(struct file *file, struct dentry *dentry)
 {
+	if (IS_ERR(dentry))
+		return PTR_ERR(dentry);
 	file->f_path.dentry = dentry;
 	return 0;
 }
diff --git a/fs/orangefs/xattr.c b/fs/orangefs/xattr.c
index 74ef75586f38..eee3c5ed1bbb 100644
--- a/fs/orangefs/xattr.c
+++ b/fs/orangefs/xattr.c
@@ -54,7 +54,9 @@ static inline int convert_to_internal_xattr_flags(int setxattr_flags)
 static unsigned int xattr_key(const char *key)
 {
 	unsigned int i = 0;
-	while (key)
+	if (!key)
+		return 0;
+	while (*key)
 		i += *key++;
 	return i % 16;
 }
@@ -175,8 +177,8 @@ ssize_t orangefs_inode_getxattr(struct inode *inode, const char *name,
 				cx->length = -1;
 				cx->timeout = jiffies +
 				    orangefs_getattr_timeout_msecs*HZ/1000;
-				hash_add(orangefs_inode->xattr_cache, &cx->node,
-				    xattr_key(cx->key));
+				hlist_add_head( &cx->node,
+                                   &orangefs_inode->xattr_cache[xattr_key(cx->key)]);
 			}
 		}
 		goto out_release_op;
@@ -229,8 +231,8 @@ ssize_t orangefs_inode_getxattr(struct inode *inode, const char *name,
 			memcpy(cx->val, buffer, length);
 			cx->length = length;
 			cx->timeout = jiffies + HZ;
-			hash_add(orangefs_inode->xattr_cache, &cx->node,
-			    xattr_key(cx->key));
+			hlist_add_head(&cx->node,
+				&orangefs_inode->xattr_cache[xattr_key(cx->key)]);
 		}
 	}
 
diff --git a/fs/overlayfs/dir.c b/fs/overlayfs/dir.c
index dbd63a74df4b..039e829aa7de 100644
--- a/fs/overlayfs/dir.c
+++ b/fs/overlayfs/dir.c
@@ -205,12 +205,32 @@ struct dentry *ovl_create_real(struct ovl_fs *ofs, struct dentry *parent,
 			err = -EPERM;
 		}
 	}
-	if (!err && WARN_ON(!newdentry->d_inode)) {
+	if (err)
+		goto out;
+
+	if (WARN_ON(!newdentry->d_inode)) {
 		/*
 		 * Not quite sure if non-instantiated dentry is legal or not.
 		 * VFS doesn't seem to care so check and warn here.
 		 */
 		err = -EIO;
+	} else if (d_unhashed(newdentry)) {
+		struct dentry *d;
+		/*
+		 * Some filesystems (i.e. casefolded) may return an unhashed
+		 * negative dentry from the ovl_lookup_upper() call before
+		 * ovl_create_real().
+		 * In that case, lookup again after making the newdentry
+		 * positive, so ovl_create_upper() always returns a hashed
+		 * positive dentry.
+		 */
+		d = ovl_lookup_upper(ofs, newdentry->d_name.name, parent,
+				     newdentry->d_name.len);
+		dput(newdentry);
+		if (IS_ERR_OR_NULL(d))
+			err = d ? PTR_ERR(d) : -ENOENT;
+		else
+			return d;
 	}
 out:
 	if (err) {
diff --git a/fs/smb/client/cached_dir.c b/fs/smb/client/cached_dir.c
index b69daeb1301b..1ab737ffedfe 100644
--- a/fs/smb/client/cached_dir.c
+++ b/fs/smb/client/cached_dir.c
@@ -389,11 +389,11 @@ out:
 			 * lease. Release one here, and the second below.
 			 */
 			cfid->has_lease = false;
-			kref_put(&cfid->refcount, smb2_close_cached_fid);
+			close_cached_dir(cfid);
 		}
 		spin_unlock(&cfids->cfid_list_lock);
 
-		kref_put(&cfid->refcount, smb2_close_cached_fid);
+		close_cached_dir(cfid);
 	} else {
 		*ret_cfid = cfid;
 		atomic_inc(&tcon->num_remote_opens);
@@ -423,6 +423,7 @@ int open_cached_dir_by_dentry(struct cifs_tcon *tcon,
 			cifs_dbg(FYI, "found a cached file handle by dentry\n");
 			kref_get(&cfid->refcount);
 			*ret_cfid = cfid;
+			cfid->last_access_time = jiffies;
 			spin_unlock(&cfids->cfid_list_lock);
 			return 0;
 		}
@@ -433,12 +434,14 @@ int open_cached_dir_by_dentry(struct cifs_tcon *tcon,
 
 static void
 smb2_close_cached_fid(struct kref *ref)
+__releases(&cfid->cfids->cfid_list_lock)
 {
 	struct cached_fid *cfid = container_of(ref, struct cached_fid,
 					       refcount);
 	int rc;
 
-	spin_lock(&cfid->cfids->cfid_list_lock);
+	lockdep_assert_held(&cfid->cfids->cfid_list_lock);
+
 	if (cfid->on_list) {
 		list_del(&cfid->entry);
 		cfid->on_list = false;
@@ -473,7 +476,7 @@ void drop_cached_dir_by_name(const unsigned int xid, struct cifs_tcon *tcon,
 	spin_lock(&cfid->cfids->cfid_list_lock);
 	if (cfid->has_lease) {
 		cfid->has_lease = false;
-		kref_put(&cfid->refcount, smb2_close_cached_fid);
+		close_cached_dir(cfid);
 	}
 	spin_unlock(&cfid->cfids->cfid_list_lock);
 	close_cached_dir(cfid);
@@ -482,7 +485,7 @@ void drop_cached_dir_by_name(const unsigned int xid, struct cifs_tcon *tcon,
 
 void close_cached_dir(struct cached_fid *cfid)
 {
-	kref_put(&cfid->refcount, smb2_close_cached_fid);
+	kref_put_lock(&cfid->refcount, smb2_close_cached_fid, &cfid->cfids->cfid_list_lock);
 }
 
 /*
@@ -593,7 +596,7 @@ cached_dir_offload_close(struct work_struct *work)
 
 	WARN_ON(cfid->on_list);
 
-	kref_put(&cfid->refcount, smb2_close_cached_fid);
+	close_cached_dir(cfid);
 	cifs_put_tcon(tcon, netfs_trace_tcon_ref_put_cached_close);
 }
 
@@ -770,7 +773,7 @@ static void cfids_laundromat_worker(struct work_struct *work)
 			 * Drop the ref-count from above, either the lease-ref (if there
 			 * was one) or the extra one acquired.
 			 */
-			kref_put(&cfid->refcount, smb2_close_cached_fid);
+			close_cached_dir(cfid);
 	}
 	queue_delayed_work(cfid_put_wq, &cfids->laundromat_work,
 			   dir_cache_timeout * HZ);
diff --git a/fs/smb/client/smb2ops.c b/fs/smb/client/smb2ops.c
index 7e86d0ef4b35..a4c283348c7b 100644
--- a/fs/smb/client/smb2ops.c
+++ b/fs/smb/client/smb2ops.c
@@ -2716,11 +2716,12 @@ smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon,
 	struct cifs_fid fid;
 	int rc;
 	__le16 *utf16_path;
-	struct cached_fid *cfid = NULL;
+	struct cached_fid *cfid;
 	int retries = 0, cur_sleep = 1;
 
 replay_again:
 	/* reinitialize for possible replay */
+	cfid = NULL;
 	flags = CIFS_CP_CREATE_CLOSE_OP;
 	oplock = SMB2_OPLOCK_LEVEL_NONE;
 	server = cifs_pick_channel(ses);
diff --git a/fs/smb/client/smb2pdu.c b/fs/smb/client/smb2pdu.c
index c3b9d3f6210f..f925b2da76c1 100644
--- a/fs/smb/client/smb2pdu.c
+++ b/fs/smb/client/smb2pdu.c
@@ -4054,9 +4054,12 @@ replay_again:
 
 		smb_rsp = (struct smb2_change_notify_rsp *)rsp_iov.iov_base;
 
-		smb2_validate_iov(le16_to_cpu(smb_rsp->OutputBufferOffset),
-				le32_to_cpu(smb_rsp->OutputBufferLength), &rsp_iov,
+		rc = smb2_validate_iov(le16_to_cpu(smb_rsp->OutputBufferOffset),
+				le32_to_cpu(smb_rsp->OutputBufferLength),
+				&rsp_iov,
 				sizeof(struct file_notify_information));
+		if (rc)
+			goto cnotify_exit;
 
 		*out_data = kmemdup((char *)smb_rsp + le16_to_cpu(smb_rsp->OutputBufferOffset),
 				le32_to_cpu(smb_rsp->OutputBufferLength), GFP_KERNEL);
diff --git a/fs/smb/client/transport.c b/fs/smb/client/transport.c
index a61ba7f3fb86..940e90107134 100644
--- a/fs/smb/client/transport.c
+++ b/fs/smb/client/transport.c
@@ -22,6 +22,7 @@
 #include <linux/mempool.h>
 #include <linux/sched/signal.h>
 #include <linux/task_io_accounting_ops.h>
+#include <linux/task_work.h>
 #include "cifspdu.h"
 #include "cifsglob.h"
 #include "cifsproto.h"
@@ -173,9 +174,16 @@ smb_send_kvec(struct TCP_Server_Info *server, struct msghdr *smb_msg,
 		 * send a packet.  In most cases if we fail to send
 		 * after the retries we will kill the socket and
 		 * reconnect which may clear the network problem.
+		 *
+		 * Even if regular signals are masked, EINTR might be
+		 * propagated from sk_stream_wait_memory() to here when
+		 * TIF_NOTIFY_SIGNAL is used for task work. For example,
+		 * certain io_uring completions will use that. Treat
+		 * having EINTR with pending task work the same as EAGAIN
+		 * to avoid unnecessary reconnects.
 		 */
 		rc = sock_sendmsg(ssocket, smb_msg);
-		if (rc == -EAGAIN) {
+		if (rc == -EAGAIN || unlikely(rc == -EINTR && task_work_pending(current))) {
 			retries++;
 			if (retries >= 14 ||
 			    (!server->noblocksnd && (retries > 2))) {
diff --git a/fs/smb/server/transport_tcp.c b/fs/smb/server/transport_tcp.c
index 1009cb324fd5..43401d09c9db 100644
--- a/fs/smb/server/transport_tcp.c
+++ b/fs/smb/server/transport_tcp.c
@@ -473,12 +473,13 @@ static int create_socket(struct interface *iface)
 	struct socket *ksmbd_socket;
 	bool ipv4 = false;
 
-	ret = sock_create(PF_INET6, SOCK_STREAM, IPPROTO_TCP, &ksmbd_socket);
+	ret = sock_create_kern(current->nsproxy->net_ns, PF_INET6, SOCK_STREAM,
+			IPPROTO_TCP, &ksmbd_socket);
 	if (ret) {
 		if (ret != -EAFNOSUPPORT)
 			pr_err("Can't create socket for ipv6, fallback to ipv4: %d\n", ret);
-		ret = sock_create(PF_INET, SOCK_STREAM, IPPROTO_TCP,
-				  &ksmbd_socket);
+		ret = sock_create_kern(current->nsproxy->net_ns, PF_INET,
+				SOCK_STREAM, IPPROTO_TCP, &ksmbd_socket);
 		if (ret) {
 			pr_err("Can't create socket for ipv4: %d\n", ret);
 			goto out_clear;
diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c
index 2a74f2957341..0cf84b25d656 100644
--- a/fs/xfs/xfs_iomap.c
+++ b/fs/xfs/xfs_iomap.c
@@ -1082,6 +1082,29 @@ const struct iomap_ops xfs_zoned_direct_write_iomap_ops = {
 };
 #endif /* CONFIG_XFS_RT */
 
+#ifdef DEBUG
+static void
+xfs_check_atomic_cow_conversion(
+	struct xfs_inode		*ip,
+	xfs_fileoff_t			offset_fsb,
+	xfs_filblks_t			count_fsb,
+	const struct xfs_bmbt_irec	*cmap)
+{
+	struct xfs_iext_cursor		icur;
+	struct xfs_bmbt_irec		cmap2 = { };
+
+	if (xfs_iext_lookup_extent(ip, ip->i_cowfp, offset_fsb, &icur, &cmap2))
+		xfs_trim_extent(&cmap2, offset_fsb, count_fsb);
+
+	ASSERT(cmap2.br_startoff == cmap->br_startoff);
+	ASSERT(cmap2.br_blockcount == cmap->br_blockcount);
+	ASSERT(cmap2.br_startblock == cmap->br_startblock);
+	ASSERT(cmap2.br_state == cmap->br_state);
+}
+#else
+# define xfs_check_atomic_cow_conversion(...)	((void)0)
+#endif
+
 static int
 xfs_atomic_write_cow_iomap_begin(
 	struct inode		*inode,
@@ -1093,9 +1116,10 @@ xfs_atomic_write_cow_iomap_begin(
 {
 	struct xfs_inode	*ip = XFS_I(inode);
 	struct xfs_mount	*mp = ip->i_mount;
-	const xfs_fileoff_t		offset_fsb = XFS_B_TO_FSBT(mp, offset);
-	xfs_fileoff_t		end_fsb = xfs_iomap_end_fsb(mp, offset, length);
-	xfs_filblks_t		count_fsb = end_fsb - offset_fsb;
+	const xfs_fileoff_t	offset_fsb = XFS_B_TO_FSBT(mp, offset);
+	const xfs_fileoff_t	end_fsb = XFS_B_TO_FSB(mp, offset + length);
+	const xfs_filblks_t	count_fsb = end_fsb - offset_fsb;
+	xfs_filblks_t		hole_count_fsb;
 	int			nmaps = 1;
 	xfs_filblks_t		resaligned;
 	struct xfs_bmbt_irec	cmap;
@@ -1121,7 +1145,7 @@ xfs_atomic_write_cow_iomap_begin(
 		return -EAGAIN;
 
 	trace_xfs_iomap_atomic_write_cow(ip, offset, length);
-
+retry:
 	xfs_ilock(ip, XFS_ILOCK_EXCL);
 
 	if (!ip->i_cowfp) {
@@ -1132,14 +1156,22 @@ xfs_atomic_write_cow_iomap_begin(
 	if (!xfs_iext_lookup_extent(ip, ip->i_cowfp, offset_fsb, &icur, &cmap))
 		cmap.br_startoff = end_fsb;
 	if (cmap.br_startoff <= offset_fsb) {
+		if (isnullstartblock(cmap.br_startblock))
+			goto convert_delay;
+
+		/*
+		 * cmap could extend outside the write range due to previous
+		 * speculative preallocations.  We must trim cmap to the write
+		 * range because the cow fork treats written mappings to mean
+		 * "write in progress".
+		 */
 		xfs_trim_extent(&cmap, offset_fsb, count_fsb);
 		goto found;
 	}
 
-	end_fsb = cmap.br_startoff;
-	count_fsb = end_fsb - offset_fsb;
+	hole_count_fsb = cmap.br_startoff - offset_fsb;
 
-	resaligned = xfs_aligned_fsb_count(offset_fsb, count_fsb,
+	resaligned = xfs_aligned_fsb_count(offset_fsb, hole_count_fsb,
 			xfs_get_cowextsz_hint(ip));
 	xfs_iunlock(ip, XFS_ILOCK_EXCL);
 
@@ -1160,8 +1192,10 @@ xfs_atomic_write_cow_iomap_begin(
 	if (!xfs_iext_lookup_extent(ip, ip->i_cowfp, offset_fsb, &icur, &cmap))
 		cmap.br_startoff = end_fsb;
 	if (cmap.br_startoff <= offset_fsb) {
-		xfs_trim_extent(&cmap, offset_fsb, count_fsb);
 		xfs_trans_cancel(tp);
+		if (isnullstartblock(cmap.br_startblock))
+			goto convert_delay;
+		xfs_trim_extent(&cmap, offset_fsb, count_fsb);
 		goto found;
 	}
 
@@ -1173,7 +1207,7 @@ xfs_atomic_write_cow_iomap_begin(
 	 * atomic writes to that same range will be aligned (and don't require
 	 * this COW-based method).
 	 */
-	error = xfs_bmapi_write(tp, ip, offset_fsb, count_fsb,
+	error = xfs_bmapi_write(tp, ip, offset_fsb, hole_count_fsb,
 			XFS_BMAPI_COWFORK | XFS_BMAPI_PREALLOC |
 			XFS_BMAPI_EXTSZALIGN, 0, &cmap, &nmaps);
 	if (error) {
@@ -1186,21 +1220,43 @@ xfs_atomic_write_cow_iomap_begin(
 	if (error)
 		goto out_unlock;
 
+	/*
+	 * cmap could map more blocks than the range we passed into bmapi_write
+	 * because of EXTSZALIGN or adjacent pre-existing unwritten mappings
+	 * that were merged.  Trim cmap to the original write range so that we
+	 * don't convert more than we were asked to do for this write.
+	 */
+	xfs_trim_extent(&cmap, offset_fsb, count_fsb);
+
 found:
 	if (cmap.br_state != XFS_EXT_NORM) {
-		error = xfs_reflink_convert_cow_locked(ip, offset_fsb,
-				count_fsb);
+		error = xfs_reflink_convert_cow_locked(ip, cmap.br_startoff,
+				cmap.br_blockcount);
 		if (error)
 			goto out_unlock;
 		cmap.br_state = XFS_EXT_NORM;
+		xfs_check_atomic_cow_conversion(ip, offset_fsb, count_fsb,
+				&cmap);
 	}
 
-	length = XFS_FSB_TO_B(mp, cmap.br_startoff + cmap.br_blockcount);
-	trace_xfs_iomap_found(ip, offset, length - offset, XFS_COW_FORK, &cmap);
+	trace_xfs_iomap_found(ip, offset, length, XFS_COW_FORK, &cmap);
 	seq = xfs_iomap_inode_sequence(ip, IOMAP_F_SHARED);
 	xfs_iunlock(ip, XFS_ILOCK_EXCL);
 	return xfs_bmbt_to_iomap(ip, iomap, &cmap, flags, IOMAP_F_SHARED, seq);
 
+convert_delay:
+	xfs_iunlock(ip, XFS_ILOCK_EXCL);
+	error = xfs_bmapi_convert_delalloc(ip, XFS_COW_FORK, offset, iomap,
+			NULL);
+	if (error)
+		return error;
+
+	/*
+	 * Try the lookup again, because the delalloc conversion might have
+	 * turned the COW mapping into unwritten, but we need it to be in
+	 * written state.
+	 */
+	goto retry;
 out_unlock:
 	xfs_iunlock(ip, XFS_ILOCK_EXCL);
 	return error;