Adding upstream version 6.7.12.upstream/6.7.12

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

16 files changed, 480 insertions, 358 deletions

diff --git a/fs/smb/client/cached_dir.c b/fs/smb/client/cached_dir.c
index 5730c65ffb..15e1215bc4 100644
--- a/fs/smb/client/cached_dir.c
+++ b/fs/smb/client/cached_dir.c
@@ -233,7 +233,8 @@ int open_cached_dir(unsigned int xid, struct cifs_tcon *tcon,
 		.tcon = tcon,
 		.path = path,
 		.create_options = cifs_create_options(cifs_sb, CREATE_NOT_FILE),
-		.desired_access =  FILE_READ_DATA | FILE_READ_ATTRIBUTES,
+		.desired_access =  FILE_READ_DATA | FILE_READ_ATTRIBUTES |
+				   FILE_READ_EA,
 		.disposition = FILE_OPEN,
 		.fid = pfid,
 	};
diff --git a/fs/smb/client/cifs_debug.c b/fs/smb/client/cifs_debug.c
index 60027f5aeb..04a6351a92 100644
--- a/fs/smb/client/cifs_debug.c
+++ b/fs/smb/client/cifs_debug.c
@@ -488,6 +488,8 @@ skip_rdma:
 				ses->ses_count, ses->serverOS, ses->serverNOS,
 				ses->capabilities, ses->ses_status);
 			}
+			if (ses->expired_pwd)
+				seq_puts(m, "password no longer valid ");
 			spin_unlock(&ses->ses_lock);
 
 			seq_printf(m, "\n\tSecurity type: %s ",
diff --git a/fs/smb/client/cifsglob.h b/fs/smb/client/cifsglob.h
index 462554917e..35a12413bb 100644
--- a/fs/smb/client/cifsglob.h
+++ b/fs/smb/client/cifsglob.h
@@ -339,6 +339,9 @@ struct smb_version_operations {
 	/* informational QFS call */
 	void (*qfs_tcon)(const unsigned int, struct cifs_tcon *,
 			 struct cifs_sb_info *);
+	/* query for server interfaces */
+	int (*query_server_interfaces)(const unsigned int, struct cifs_tcon *,
+				       bool);
 	/* check if a path is accessible or not */
 	int (*is_path_accessible)(const unsigned int, struct cifs_tcon *,
 				  struct cifs_sb_info *, const char *);
@@ -1052,6 +1055,7 @@ struct cifs_ses {
 	enum securityEnum sectype; /* what security flavor was specified? */
 	bool sign;		/* is signing required? */
 	bool domainAuto:1;
+	bool expired_pwd;  /* track if access denied or expired pwd so can know if need to update */
 	unsigned int flags;
 	__u16 session_flags;
 	__u8 smb3signingkey[SMB3_SIGN_KEY_SIZE];
@@ -1562,6 +1566,7 @@ struct cifsInodeInfo {
 	spinlock_t deferred_lock; /* protection on deferred list */
 	bool lease_granted; /* Flag to indicate whether lease or oplock is granted. */
 	char *symlink_target;
+	__u32 reparse_tag;
 };
 
 static inline struct cifsInodeInfo *
diff --git a/fs/smb/client/cifsproto.h b/fs/smb/client/cifsproto.h
index 9516f57323..13131957d9 100644
--- a/fs/smb/client/cifsproto.h
+++ b/fs/smb/client/cifsproto.h
@@ -144,7 +144,8 @@ extern int cifs_reconnect(struct TCP_Server_Info *server,
 extern int checkSMB(char *buf, unsigned int len, struct TCP_Server_Info *srvr);
 extern bool is_valid_oplock_break(char *, struct TCP_Server_Info *);
 extern bool backup_cred(struct cifs_sb_info *);
-extern bool is_size_safe_to_change(struct cifsInodeInfo *, __u64 eof);
+extern bool is_size_safe_to_change(struct cifsInodeInfo *cifsInode, __u64 eof,
+				   bool from_readdir);
 extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
 			    unsigned int bytes_written);
 extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, int);
@@ -201,7 +202,8 @@ extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr,
 				     struct cifs_sb_info *cifs_sb);
 extern void cifs_dir_info_to_fattr(struct cifs_fattr *, FILE_DIRECTORY_INFO *,
 					struct cifs_sb_info *);
-extern int cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr);
+extern int cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr,
+			       bool from_readdir);
 extern struct inode *cifs_iget(struct super_block *sb,
 			       struct cifs_fattr *fattr);
 
@@ -652,7 +654,7 @@ cifs_chan_is_iface_active(struct cifs_ses *ses,
 			  struct TCP_Server_Info *server);
 void
 cifs_disable_secondary_channels(struct cifs_ses *ses);
-int
+void
 cifs_chan_update_iface(struct cifs_ses *ses, struct TCP_Server_Info *server);
 int
 SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon, bool in_mount);
diff --git a/fs/smb/client/connect.c b/fs/smb/client/connect.c
index c3d805ecb7..bc8d09bab1 100644
--- a/fs/smb/client/connect.c
+++ b/fs/smb/client/connect.c
@@ -123,12 +123,16 @@ static void smb2_query_server_interfaces(struct work_struct *work)
 	struct cifs_tcon *tcon = container_of(work,
 					struct cifs_tcon,
 					query_interfaces.work);
+	struct TCP_Server_Info *server = tcon->ses->server;
 
 	/*
 	 * query server network interfaces, in case they change
 	 */
+	if (!server->ops->query_server_interfaces)
+		return;
+
 	xid = get_xid();
-	rc = SMB3_request_interfaces(xid, tcon, false);
+	rc = server->ops->query_server_interfaces(xid, tcon, false);
 	free_xid(xid);
 
 	if (rc) {
diff --git a/fs/smb/client/file.c b/fs/smb/client/file.c
index 4cbb5487bd..c711d5eb29 100644
--- a/fs/smb/client/file.c
+++ b/fs/smb/client/file.c
@@ -87,7 +87,7 @@ void cifs_pages_written_back(struct inode *inode, loff_t start, unsigned int len
 			continue;
 		if (!folio_test_writeback(folio)) {
 			WARN_ONCE(1, "bad %x @%llx page %lx %lx\n",
-				  len, start, folio_index(folio), end);
+				  len, start, folio->index, end);
 			continue;
 		}
 
@@ -120,7 +120,7 @@ void cifs_pages_write_failed(struct inode *inode, loff_t start, unsigned int len
 			continue;
 		if (!folio_test_writeback(folio)) {
 			WARN_ONCE(1, "bad %x @%llx page %lx %lx\n",
-				  len, start, folio_index(folio), end);
+				  len, start, folio->index, end);
 			continue;
 		}
 
@@ -151,7 +151,7 @@ void cifs_pages_write_redirty(struct inode *inode, loff_t start, unsigned int le
 	xas_for_each(&xas, folio, end) {
 		if (!folio_test_writeback(folio)) {
 			WARN_ONCE(1, "bad %x @%llx page %lx %lx\n",
-				  len, start, folio_index(folio), end);
+				  len, start, folio->index, end);
 			continue;
 		}
 
@@ -329,7 +329,7 @@ int cifs_posix_open(const char *full_path, struct inode **pinode,
 		}
 	} else {
 		cifs_revalidate_mapping(*pinode);
-		rc = cifs_fattr_to_inode(*pinode, &fattr);
+		rc = cifs_fattr_to_inode(*pinode, &fattr, false);
 	}
 
 posix_open_ret:
@@ -2622,20 +2622,20 @@ static int cifs_partialpagewrite(struct page *page, unsigned from, unsigned to)
  * dirty pages if possible, but don't sleep while doing so.
  */
 static void cifs_extend_writeback(struct address_space *mapping,
+				  struct xa_state *xas,
 				  long *_count,
 				  loff_t start,
 				  int max_pages,
-				  size_t max_len,
-				  unsigned int *_len)
+				  loff_t max_len,
+				  size_t *_len)
 {
 	struct folio_batch batch;
 	struct folio *folio;
-	unsigned int psize, nr_pages;
-	size_t len = *_len;
-	pgoff_t index = (start + len) / PAGE_SIZE;
+	unsigned int nr_pages;
+	pgoff_t index = (start + *_len) / PAGE_SIZE;
+	size_t len;
 	bool stop = true;
 	unsigned int i;
-	XA_STATE(xas, &mapping->i_pages, index);
 
 	folio_batch_init(&batch);
 
@@ -2646,54 +2646,64 @@ static void cifs_extend_writeback(struct address_space *mapping,
 		 */
 		rcu_read_lock();
 
-		xas_for_each(&xas, folio, ULONG_MAX) {
+		xas_for_each(xas, folio, ULONG_MAX) {
 			stop = true;
-			if (xas_retry(&xas, folio))
+			if (xas_retry(xas, folio))
 				continue;
 			if (xa_is_value(folio))
 				break;
-			if (folio_index(folio) != index)
+			if (folio->index != index) {
+				xas_reset(xas);
 				break;
+			}
+
 			if (!folio_try_get_rcu(folio)) {
-				xas_reset(&xas);
+				xas_reset(xas);
 				continue;
 			}
 			nr_pages = folio_nr_pages(folio);
-			if (nr_pages > max_pages)
+			if (nr_pages > max_pages) {
+				xas_reset(xas);
 				break;
+			}
 
 			/* Has the page moved or been split? */
-			if (unlikely(folio != xas_reload(&xas))) {
+			if (unlikely(folio != xas_reload(xas))) {
 				folio_put(folio);
+				xas_reset(xas);
 				break;
 			}
 
 			if (!folio_trylock(folio)) {
 				folio_put(folio);
+				xas_reset(xas);
 				break;
 			}
-			if (!folio_test_dirty(folio) || folio_test_writeback(folio)) {
+			if (!folio_test_dirty(folio) ||
+			    folio_test_writeback(folio)) {
 				folio_unlock(folio);
 				folio_put(folio);
+				xas_reset(xas);
 				break;
 			}
 
 			max_pages -= nr_pages;
-			psize = folio_size(folio);
-			len += psize;
+			len = folio_size(folio);
 			stop = false;
-			if (max_pages <= 0 || len >= max_len || *_count <= 0)
-				stop = true;
 
 			index += nr_pages;
+			*_count -= nr_pages;
+			*_len += len;
+			if (max_pages <= 0 || *_len >= max_len || *_count <= 0)
+				stop = true;
+
 			if (!folio_batch_add(&batch, folio))
 				break;
 			if (stop)
 				break;
 		}
 
-		if (!stop)
-			xas_pause(&xas);
+		xas_pause(xas);
 		rcu_read_unlock();
 
 		/* Now, if we obtained any pages, we can shift them to being
@@ -2709,18 +2719,13 @@ static void cifs_extend_writeback(struct address_space *mapping,
 			 */
 			if (!folio_clear_dirty_for_io(folio))
 				WARN_ON(1);
-			if (folio_start_writeback(folio))
-				WARN_ON(1);
-
-			*_count -= folio_nr_pages(folio);
+			folio_start_writeback(folio);
 			folio_unlock(folio);
 		}
 
 		folio_batch_release(&batch);
 		cond_resched();
 	} while (!stop);
-
-	*_len = len;
 }
 
 /*
@@ -2728,8 +2733,10 @@ static void cifs_extend_writeback(struct address_space *mapping,
  */
 static ssize_t cifs_write_back_from_locked_folio(struct address_space *mapping,
 						 struct writeback_control *wbc,
+						 struct xa_state *xas,
 						 struct folio *folio,
-						 loff_t start, loff_t end)
+						 unsigned long long start,
+						 unsigned long long end)
 {
 	struct inode *inode = mapping->host;
 	struct TCP_Server_Info *server;
@@ -2738,18 +2745,18 @@ static ssize_t cifs_write_back_from_locked_folio(struct address_space *mapping,
 	struct cifs_credits credits_on_stack;
 	struct cifs_credits *credits = &credits_on_stack;
 	struct cifsFileInfo *cfile = NULL;
-	unsigned int xid, wsize, len;
-	loff_t i_size = i_size_read(inode);
-	size_t max_len;
+	unsigned long long i_size = i_size_read(inode), max_len;
+	unsigned int xid, wsize;
+	size_t len = folio_size(folio);
 	long count = wbc->nr_to_write;
 	int rc;
 
 	/* The folio should be locked, dirty and not undergoing writeback. */
-	if (folio_start_writeback(folio))
-		WARN_ON(1);
+	if (!folio_clear_dirty_for_io(folio))
+		WARN_ON_ONCE(1);
+	folio_start_writeback(folio);
 
 	count -= folio_nr_pages(folio);
-	len = folio_size(folio);
 
 	xid = get_xid();
 	server = cifs_pick_channel(cifs_sb_master_tcon(cifs_sb)->ses);
@@ -2779,9 +2786,10 @@ static ssize_t cifs_write_back_from_locked_folio(struct address_space *mapping,
 	wdata->server = server;
 	cfile = NULL;
 
-	/* Find all consecutive lockable dirty pages, stopping when we find a
-	 * page that is not immediately lockable, is not dirty or is missing,
-	 * or we reach the end of the range.
+	/* Find all consecutive lockable dirty pages that have contiguous
+	 * written regions, stopping when we find a page that is not
+	 * immediately lockable, is not dirty or is missing, or we reach the
+	 * end of the range.
 	 */
 	if (start < i_size) {
 		/* Trim the write to the EOF; the extra data is ignored.  Also
@@ -2801,19 +2809,18 @@ static ssize_t cifs_write_back_from_locked_folio(struct address_space *mapping,
 			max_pages -= folio_nr_pages(folio);
 
 			if (max_pages > 0)
-				cifs_extend_writeback(mapping, &count, start,
+				cifs_extend_writeback(mapping, xas, &count, start,
 						      max_pages, max_len, &len);
 		}
-		len = min_t(loff_t, len, max_len);
 	}
-
-	wdata->bytes = len;
+	len = min_t(unsigned long long, len, i_size - start);
 
 	/* We now have a contiguous set of dirty pages, each with writeback
 	 * set; the first page is still locked at this point, but all the rest
 	 * have been unlocked.
 	 */
 	folio_unlock(folio);
+	wdata->bytes = len;
 
 	if (start < i_size) {
 		iov_iter_xarray(&wdata->iter, ITER_SOURCE, &mapping->i_pages,
@@ -2864,102 +2871,118 @@ err_xid:
 /*
  * write a region of pages back to the server
  */
-static int cifs_writepages_region(struct address_space *mapping,
-				  struct writeback_control *wbc,
-				  loff_t start, loff_t end, loff_t *_next)
+static ssize_t cifs_writepages_begin(struct address_space *mapping,
+				     struct writeback_control *wbc,
+				     struct xa_state *xas,
+				     unsigned long long *_start,
+				     unsigned long long end)
 {
-	struct folio_batch fbatch;
+	struct folio *folio;
+	unsigned long long start = *_start;
+	ssize_t ret;
 	int skips = 0;
 
-	folio_batch_init(&fbatch);
-	do {
-		int nr;
-		pgoff_t index = start / PAGE_SIZE;
+search_again:
+	/* Find the first dirty page. */
+	rcu_read_lock();
 
-		nr = filemap_get_folios_tag(mapping, &index, end / PAGE_SIZE,
-					    PAGECACHE_TAG_DIRTY, &fbatch);
-		if (!nr)
+	for (;;) {
+		folio = xas_find_marked(xas, end / PAGE_SIZE, PAGECACHE_TAG_DIRTY);
+		if (xas_retry(xas, folio) || xa_is_value(folio))
+			continue;
+		if (!folio)
 			break;
 
-		for (int i = 0; i < nr; i++) {
-			ssize_t ret;
-			struct folio *folio = fbatch.folios[i];
+		if (!folio_try_get_rcu(folio)) {
+			xas_reset(xas);
+			continue;
+		}
 
-redo_folio:
-			start = folio_pos(folio); /* May regress with THPs */
+		if (unlikely(folio != xas_reload(xas))) {
+			folio_put(folio);
+			xas_reset(xas);
+			continue;
+		}
 
-			/* At this point we hold neither the i_pages lock nor the
-			 * page lock: the page may be truncated or invalidated
-			 * (changing page->mapping to NULL), or even swizzled
-			 * back from swapper_space to tmpfs file mapping
-			 */
-			if (wbc->sync_mode != WB_SYNC_NONE) {
-				ret = folio_lock_killable(folio);
-				if (ret < 0)
-					goto write_error;
-			} else {
-				if (!folio_trylock(folio))
-					goto skip_write;
-			}
+		xas_pause(xas);
+		break;
+	}
+	rcu_read_unlock();
+	if (!folio)
+		return 0;
 
-			if (folio_mapping(folio) != mapping ||
-			    !folio_test_dirty(folio)) {
-				start += folio_size(folio);
-				folio_unlock(folio);
-				continue;
-			}
+	start = folio_pos(folio); /* May regress with THPs */
 
-			if (folio_test_writeback(folio) ||
-			    folio_test_fscache(folio)) {
-				folio_unlock(folio);
-				if (wbc->sync_mode == WB_SYNC_NONE)
-					goto skip_write;
+	/* At this point we hold neither the i_pages lock nor the page lock:
+	 * the page may be truncated or invalidated (changing page->mapping to
+	 * NULL), or even swizzled back from swapper_space to tmpfs file
+	 * mapping
+	 */
+lock_again:
+	if (wbc->sync_mode != WB_SYNC_NONE) {
+		ret = folio_lock_killable(folio);
+		if (ret < 0)
+			return ret;
+	} else {
+		if (!folio_trylock(folio))
+			goto search_again;
+	}
+
+	if (folio->mapping != mapping ||
+	    !folio_test_dirty(folio)) {
+		start += folio_size(folio);
+		folio_unlock(folio);
+		goto search_again;
+	}
 
-				folio_wait_writeback(folio);
+	if (folio_test_writeback(folio) ||
+	    folio_test_fscache(folio)) {
+		folio_unlock(folio);
+		if (wbc->sync_mode != WB_SYNC_NONE) {
+			folio_wait_writeback(folio);
 #ifdef CONFIG_CIFS_FSCACHE
-				folio_wait_fscache(folio);
+			folio_wait_fscache(folio);
 #endif
-				goto redo_folio;
-			}
-
-			if (!folio_clear_dirty_for_io(folio))
-				/* We hold the page lock - it should've been dirty. */
-				WARN_ON(1);
-
-			ret = cifs_write_back_from_locked_folio(mapping, wbc, folio, start, end);
-			if (ret < 0)
-				goto write_error;
-
-			start += ret;
-			continue;
-
-write_error:
-			folio_batch_release(&fbatch);
-			*_next = start;
-			return ret;
+			goto lock_again;
+		}
 
-skip_write:
-			/*
-			 * Too many skipped writes, or need to reschedule?
-			 * Treat it as a write error without an error code.
-			 */
+		start += folio_size(folio);
+		if (wbc->sync_mode == WB_SYNC_NONE) {
 			if (skips >= 5 || need_resched()) {
 				ret = 0;
-				goto write_error;
+				goto out;
 			}
-
-			/* Otherwise, just skip that folio and go on to the next */
 			skips++;
-			start += folio_size(folio);
-			continue;
 		}
+		goto search_again;
+	}
 
-		folio_batch_release(&fbatch);		
-		cond_resched();
-	} while (wbc->nr_to_write > 0);
+	ret = cifs_write_back_from_locked_folio(mapping, wbc, xas, folio, start, end);
+out:
+	if (ret > 0)
+		*_start = start + ret;
+	return ret;
+}
 
-	*_next = start;
-	return 0;
+/*
+ * Write a region of pages back to the server
+ */
+static int cifs_writepages_region(struct address_space *mapping,
+				  struct writeback_control *wbc,
+				  unsigned long long *_start,
+				  unsigned long long end)
+{
+	ssize_t ret;
+
+	XA_STATE(xas, &mapping->i_pages, *_start / PAGE_SIZE);
+
+	do {
+		ret = cifs_writepages_begin(mapping, wbc, &xas, _start, end);
+		if (ret > 0 && wbc->nr_to_write > 0)
+			cond_resched();
+	} while (ret > 0 && wbc->nr_to_write > 0);
+
+	return ret > 0 ? 0 : ret;
 }
 
 /*
@@ -2968,7 +2991,7 @@ skip_write:
 static int cifs_writepages(struct address_space *mapping,
 			   struct writeback_control *wbc)
 {
-	loff_t start, next;
+	loff_t start, end;
 	int ret;
 
 	/* We have to be careful as we can end up racing with setattr()
@@ -2976,28 +2999,34 @@ static int cifs_writepages(struct address_space *mapping,
 	 * to prevent it.
 	 */
 
-	if (wbc->range_cyclic) {
+	if (wbc->range_cyclic && mapping->writeback_index) {
 		start = mapping->writeback_index * PAGE_SIZE;
-		ret = cifs_writepages_region(mapping, wbc, start, LLONG_MAX, &next);
-		if (ret == 0) {
-			mapping->writeback_index = next / PAGE_SIZE;
-			if (start > 0 && wbc->nr_to_write > 0) {
-				ret = cifs_writepages_region(mapping, wbc, 0,
-							     start, &next);
-				if (ret == 0)
-					mapping->writeback_index =
-						next / PAGE_SIZE;
-			}
+		ret = cifs_writepages_region(mapping, wbc, &start, LLONG_MAX);
+		if (ret < 0)
+			goto out;
+
+		if (wbc->nr_to_write <= 0) {
+			mapping->writeback_index = start / PAGE_SIZE;
+			goto out;
 		}
+
+		start = 0;
+		end = mapping->writeback_index * PAGE_SIZE;
+		mapping->writeback_index = 0;
+		ret = cifs_writepages_region(mapping, wbc, &start, end);
+		if (ret == 0)
+			mapping->writeback_index = start / PAGE_SIZE;
 	} else if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX) {
-		ret = cifs_writepages_region(mapping, wbc, 0, LLONG_MAX, &next);
+		start = 0;
+		ret = cifs_writepages_region(mapping, wbc, &start, LLONG_MAX);
 		if (wbc->nr_to_write > 0 && ret == 0)
-			mapping->writeback_index = next / PAGE_SIZE;
+			mapping->writeback_index = start / PAGE_SIZE;
 	} else {
-		ret = cifs_writepages_region(mapping, wbc,
-					     wbc->range_start, wbc->range_end, &next);
+		start = wbc->range_start;
+		ret = cifs_writepages_region(mapping, wbc, &start, wbc->range_end);
 	}
 
+out:
 	return ret;
 }
 
@@ -4737,12 +4766,14 @@ static int is_inode_writable(struct cifsInodeInfo *cifs_inode)
    refreshing the inode only on increases in the file size
    but this is tricky to do without racing with writebehind
    page caching in the current Linux kernel design */
-bool is_size_safe_to_change(struct cifsInodeInfo *cifsInode, __u64 end_of_file)
+bool is_size_safe_to_change(struct cifsInodeInfo *cifsInode, __u64 end_of_file,
+			    bool from_readdir)
 {
 	if (!cifsInode)
 		return true;
 
-	if (is_inode_writable(cifsInode)) {
+	if (is_inode_writable(cifsInode) ||
+		((cifsInode->oplock & CIFS_CACHE_RW_FLG) != 0 && from_readdir)) {
 		/* This inode is open for write at least once */
 		struct cifs_sb_info *cifs_sb;
 
diff --git a/fs/smb/client/fs_context.c b/fs/smb/client/fs_context.c
index 6ecbf48d0f..e4a6b240d2 100644
--- a/fs/smb/client/fs_context.c
+++ b/fs/smb/client/fs_context.c
@@ -771,7 +771,7 @@ static void smb3_fs_context_free(struct fs_context *fc)
  */
 static int smb3_verify_reconfigure_ctx(struct fs_context *fc,
 				       struct smb3_fs_context *new_ctx,
-				       struct smb3_fs_context *old_ctx)
+				       struct smb3_fs_context *old_ctx, bool need_recon)
 {
 	if (new_ctx->posix_paths != old_ctx->posix_paths) {
 		cifs_errorf(fc, "can not change posixpaths during remount\n");
@@ -797,8 +797,15 @@ static int smb3_verify_reconfigure_ctx(struct fs_context *fc,
 	}
 	if (new_ctx->password &&
 	    (!old_ctx->password || strcmp(new_ctx->password, old_ctx->password))) {
-		cifs_errorf(fc, "can not change password during remount\n");
-		return -EINVAL;
+		if (need_recon == false) {
+			cifs_errorf(fc,
+				    "can not change password of active session during remount\n");
+			return -EINVAL;
+		} else if (old_ctx->sectype == Kerberos) {
+			cifs_errorf(fc,
+				    "can not change password for Kerberos via remount\n");
+			return -EINVAL;
+		}
 	}
 	if (new_ctx->domainname &&
 	    (!old_ctx->domainname || strcmp(new_ctx->domainname, old_ctx->domainname))) {
@@ -842,9 +849,14 @@ static int smb3_reconfigure(struct fs_context *fc)
 	struct smb3_fs_context *ctx = smb3_fc2context(fc);
 	struct dentry *root = fc->root;
 	struct cifs_sb_info *cifs_sb = CIFS_SB(root->d_sb);
+	struct cifs_ses *ses = cifs_sb_master_tcon(cifs_sb)->ses;
+	bool need_recon = false;
 	int rc;
 
-	rc = smb3_verify_reconfigure_ctx(fc, ctx, cifs_sb->ctx);
+	if (ses->expired_pwd)
+		need_recon = true;
+
+	rc = smb3_verify_reconfigure_ctx(fc, ctx, cifs_sb->ctx, need_recon);
 	if (rc)
 		return rc;
 
@@ -857,7 +869,12 @@ static int smb3_reconfigure(struct fs_context *fc)
 	STEAL_STRING(cifs_sb, ctx, UNC);
 	STEAL_STRING(cifs_sb, ctx, source);
 	STEAL_STRING(cifs_sb, ctx, username);
-	STEAL_STRING_SENSITIVE(cifs_sb, ctx, password);
+	if (need_recon == false)
+		STEAL_STRING_SENSITIVE(cifs_sb, ctx, password);
+	else  {
+		kfree_sensitive(ses->password);
+		ses->password = kstrdup(ctx->password, GFP_KERNEL);
+	}
 	STEAL_STRING(cifs_sb, ctx, domainname);
 	STEAL_STRING(cifs_sb, ctx, nodename);
 	STEAL_STRING(cifs_sb, ctx, iocharset);
diff --git a/fs/smb/client/inode.c b/fs/smb/client/inode.c
index eb54e48937..cb9e719e67 100644
--- a/fs/smb/client/inode.c
+++ b/fs/smb/client/inode.c
@@ -147,7 +147,8 @@ cifs_nlink_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr)
 
 /* populate an inode with info from a cifs_fattr struct */
 int
-cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr)
+cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr,
+		    bool from_readdir)
 {
 	struct cifsInodeInfo *cifs_i = CIFS_I(inode);
 	struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
@@ -182,6 +183,7 @@ cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr)
 		inode->i_mode = fattr->cf_mode;
 
 	cifs_i->cifsAttrs = fattr->cf_cifsattrs;
+	cifs_i->reparse_tag = fattr->cf_cifstag;
 
 	if (fattr->cf_flags & CIFS_FATTR_NEED_REVAL)
 		cifs_i->time = 0;
@@ -198,7 +200,7 @@ cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr)
 	 * Can't safely change the file size here if the client is writing to
 	 * it due to potential races.
 	 */
-	if (is_size_safe_to_change(cifs_i, fattr->cf_eof)) {
+	if (is_size_safe_to_change(cifs_i, fattr->cf_eof, from_readdir)) {
 		i_size_write(inode, fattr->cf_eof);
 
 		/*
@@ -209,7 +211,7 @@ cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr)
 		inode->i_blocks = (512 - 1 + fattr->cf_bytes) >> 9;
 	}
 
-	if (S_ISLNK(fattr->cf_mode)) {
+	if (S_ISLNK(fattr->cf_mode) && fattr->cf_symlink_target) {
 		kfree(cifs_i->symlink_target);
 		cifs_i->symlink_target = fattr->cf_symlink_target;
 		fattr->cf_symlink_target = NULL;
@@ -367,7 +369,7 @@ static int update_inode_info(struct super_block *sb,
 		CIFS_I(*inode)->time = 0; /* force reval */
 		return -ESTALE;
 	}
-	return cifs_fattr_to_inode(*inode, fattr);
+	return cifs_fattr_to_inode(*inode, fattr, false);
 }
 
 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
@@ -402,7 +404,7 @@ cifs_get_file_info_unix(struct file *filp)
 	} else
 		goto cifs_gfiunix_out;
 
-	rc = cifs_fattr_to_inode(inode, &fattr);
+	rc = cifs_fattr_to_inode(inode, &fattr, false);
 
 cifs_gfiunix_out:
 	free_xid(xid);
@@ -927,7 +929,7 @@ cifs_get_file_info(struct file *filp)
 	fattr.cf_uniqueid = CIFS_I(inode)->uniqueid;
 	fattr.cf_flags |= CIFS_FATTR_NEED_REVAL;
 	/* if filetype is different, return error */
-	rc = cifs_fattr_to_inode(inode, &fattr);
+	rc = cifs_fattr_to_inode(inode, &fattr, false);
 cgfi_exit:
 	cifs_free_open_info(&data);
 	free_xid(xid);
@@ -1103,6 +1105,7 @@ static int reparse_info_to_fattr(struct cifs_open_info_data *data,
 
 	cifs_open_info_to_fattr(fattr, data, sb);
 out:
+	fattr->cf_cifstag = data->reparse.tag;
 	free_rsp_buf(rsp_buftype, rsp_iov.iov_base);
 	return rc;
 }
@@ -1465,7 +1468,7 @@ retry_iget5_locked:
 		}
 
 		/* can't fail - see cifs_find_inode() */
-		cifs_fattr_to_inode(inode, fattr);
+		cifs_fattr_to_inode(inode, fattr, false);
 		if (sb->s_flags & SB_NOATIME)
 			inode->i_flags |= S_NOATIME | S_NOCMTIME;
 		if (inode->i_state & I_NEW) {
diff --git a/fs/smb/client/readdir.c b/fs/smb/client/readdir.c
index e23cd216bf..56033e4e4b 100644
--- a/fs/smb/client/readdir.c
+++ b/fs/smb/client/readdir.c
@@ -56,6 +56,23 @@ static inline void dump_cifs_file_struct(struct file *file, char *label)
 #endif /* DEBUG2 */
 
 /*
+ * Match a reparse point inode if reparse tag and ctime haven't changed.
+ *
+ * Windows Server updates ctime of reparse points when their data have changed.
+ * The server doesn't allow changing reparse tags from existing reparse points,
+ * though it's worth checking.
+ */
+static inline bool reparse_inode_match(struct inode *inode,
+				       struct cifs_fattr *fattr)
+{
+	struct timespec64 ctime = inode_get_ctime(inode);
+
+	return (CIFS_I(inode)->cifsAttrs & ATTR_REPARSE) &&
+		CIFS_I(inode)->reparse_tag == fattr->cf_cifstag &&
+		timespec64_equal(&ctime, &fattr->cf_ctime);
+}
+
+/*
  * Attempt to preload the dcache with the results from the FIND_FIRST/NEXT
  *
  * Find the dentry that matches "name". If there isn't one, create one. If it's
@@ -71,6 +88,7 @@ cifs_prime_dcache(struct dentry *parent, struct qstr *name,
 	struct super_block *sb = parent->d_sb;
 	struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
 	DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
+	int rc;
 
 	cifs_dbg(FYI, "%s: for %s\n", __func__, name->name);
 
@@ -82,9 +100,11 @@ cifs_prime_dcache(struct dentry *parent, struct qstr *name,
 		 * We'll end up doing an on the wire call either way and
 		 * this spares us an invalidation.
 		 */
-		if (fattr->cf_flags & CIFS_FATTR_NEED_REVAL)
-			return;
 retry:
+		if ((fattr->cf_cifsattrs & ATTR_REPARSE) ||
+		    (fattr->cf_flags & CIFS_FATTR_NEED_REVAL))
+			return;
+
 		dentry = d_alloc_parallel(parent, name, &wq);
 	}
 	if (IS_ERR(dentry))
@@ -104,12 +124,34 @@ retry:
 			if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM))
 				fattr->cf_uniqueid = CIFS_I(inode)->uniqueid;
 
-			/* update inode in place
-			 * if both i_ino and i_mode didn't change */
-			if (CIFS_I(inode)->uniqueid == fattr->cf_uniqueid &&
-			    cifs_fattr_to_inode(inode, fattr) == 0) {
-				dput(dentry);
-				return;
+			/*
+			 * Update inode in place if both i_ino and i_mode didn't
+			 * change.
+			 */
+			if (CIFS_I(inode)->uniqueid == fattr->cf_uniqueid) {
+				/*
+				 * Query dir responses don't provide enough
+				 * information about reparse points other than
+				 * their reparse tags.  Save an invalidation by
+				 * not clobbering the existing mode, size and
+				 * symlink target (if any) when reparse tag and
+				 * ctime haven't changed.
+				 */
+				rc = 0;
+				if (fattr->cf_cifsattrs & ATTR_REPARSE) {
+					if (likely(reparse_inode_match(inode, fattr))) {
+						fattr->cf_mode = inode->i_mode;
+						fattr->cf_eof = CIFS_I(inode)->server_eof;
+						fattr->cf_symlink_target = NULL;
+					} else {
+						CIFS_I(inode)->time = 0;
+						rc = -ESTALE;
+					}
+				}
+				if (!rc && !cifs_fattr_to_inode(inode, fattr, true)) {
+					dput(dentry);
+					return;
+				}
 			}
 		}
 		d_invalidate(dentry);
@@ -127,29 +169,6 @@ retry:
 	dput(dentry);
 }
 
-static bool reparse_file_needs_reval(const struct cifs_fattr *fattr)
-{
-	if (!(fattr->cf_cifsattrs & ATTR_REPARSE))
-		return false;
-	/*
-	 * The DFS tags should be only intepreted by server side as per
-	 * MS-FSCC 2.1.2.1, but let's include them anyway.
-	 *
-	 * Besides, if cf_cifstag is unset (0), then we still need it to be
-	 * revalidated to know exactly what reparse point it is.
-	 */
-	switch (fattr->cf_cifstag) {
-	case IO_REPARSE_TAG_DFS:
-	case IO_REPARSE_TAG_DFSR:
-	case IO_REPARSE_TAG_SYMLINK:
-	case IO_REPARSE_TAG_NFS:
-	case IO_REPARSE_TAG_MOUNT_POINT:
-	case 0:
-		return true;
-	}
-	return false;
-}
-
 static void
 cifs_fill_common_info(struct cifs_fattr *fattr, struct cifs_sb_info *cifs_sb)
 {
@@ -181,14 +200,6 @@ cifs_fill_common_info(struct cifs_fattr *fattr, struct cifs_sb_info *cifs_sb)
 	}
 
 out_reparse:
-	/*
-	 * We need to revalidate it further to make a decision about whether it
-	 * is a symbolic link, DFS referral or a reparse point with a direct
-	 * access like junctions, deduplicated files, NFS symlinks.
-	 */
-	if (reparse_file_needs_reval(fattr))
-		fattr->cf_flags |= CIFS_FATTR_NEED_REVAL;
-
 	/* non-unix readdir doesn't provide nlink */
 	fattr->cf_flags |= CIFS_FATTR_UNKNOWN_NLINK;
 
@@ -269,9 +280,6 @@ cifs_posix_to_fattr(struct cifs_fattr *fattr, struct smb2_posix_info *info,
 		fattr->cf_dtype = DT_REG;
 	}
 
-	if (reparse_file_needs_reval(fattr))
-		fattr->cf_flags |= CIFS_FATTR_NEED_REVAL;
-
 	sid_to_id(cifs_sb, &parsed.owner, fattr, SIDOWNER);
 	sid_to_id(cifs_sb, &parsed.group, fattr, SIDGROUP);
 }
@@ -333,38 +341,6 @@ cifs_std_info_to_fattr(struct cifs_fattr *fattr, FIND_FILE_STANDARD_INFO *info,
 	cifs_fill_common_info(fattr, cifs_sb);
 }
 
-/* BB eventually need to add the following helper function to
-      resolve NT_STATUS_STOPPED_ON_SYMLINK return code when
-      we try to do FindFirst on (NTFS) directory symlinks */
-/*
-int get_symlink_reparse_path(char *full_path, struct cifs_sb_info *cifs_sb,
-			     unsigned int xid)
-{
-	__u16 fid;
-	int len;
-	int oplock = 0;
-	int rc;
-	struct cifs_tcon *ptcon = cifs_sb_tcon(cifs_sb);
-	char *tmpbuffer;
-
-	rc = CIFSSMBOpen(xid, ptcon, full_path, FILE_OPEN, GENERIC_READ,
-			OPEN_REPARSE_POINT, &fid, &oplock, NULL,
-			cifs_sb->local_nls,
-			cifs_remap(cifs_sb);
-	if (!rc) {
-		tmpbuffer = kmalloc(maxpath);
-		rc = CIFSSMBQueryReparseLinkInfo(xid, ptcon, full_path,
-				tmpbuffer,
-				maxpath -1,
-				fid,
-				cifs_sb->local_nls);
-		if (CIFSSMBClose(xid, ptcon, fid)) {
-			cifs_dbg(FYI, "Error closing temporary reparsepoint open\n");
-		}
-	}
-}
- */
-
 static int
 _initiate_cifs_search(const unsigned int xid, struct file *file,
 		     const char *full_path)
@@ -433,13 +409,10 @@ ffirst_retry:
 					  &cifsFile->fid, search_flags,
 					  &cifsFile->srch_inf);
 
-	if (rc == 0)
+	if (rc == 0) {
 		cifsFile->invalidHandle = false;
-	/* BB add following call to handle readdir on new NTFS symlink errors
-	else if STATUS_STOPPED_ON_SYMLINK
-		call get_symlink_reparse_path and retry with new path */
-	else if ((rc == -EOPNOTSUPP) &&
-		(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM)) {
+	} else if ((rc == -EOPNOTSUPP) &&
+		   (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM)) {
 		cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_SERVER_INUM;
 		goto ffirst_retry;
 	}
diff --git a/fs/smb/client/sess.c b/fs/smb/client/sess.c
index 94c5d50aa3..5de32640f0 100644
--- a/fs/smb/client/sess.c
+++ b/fs/smb/client/sess.c
@@ -230,7 +230,7 @@ int cifs_try_adding_channels(struct cifs_ses *ses)
 		spin_lock(&ses->iface_lock);
 		if (!ses->iface_count) {
 			spin_unlock(&ses->iface_lock);
-			cifs_dbg(VFS, "server %s does not advertise interfaces\n",
+			cifs_dbg(ONCE, "server %s does not advertise interfaces\n",
 				      ses->server->hostname);
 			break;
 		}
@@ -361,10 +361,9 @@ done:
 
 /*
  * update the iface for the channel if necessary.
- * will return 0 when iface is updated, 1 if removed, 2 otherwise
  * Must be called with chan_lock held.
  */
-int
+void
 cifs_chan_update_iface(struct cifs_ses *ses, struct TCP_Server_Info *server)
 {
 	unsigned int chan_index;
@@ -373,20 +372,19 @@ cifs_chan_update_iface(struct cifs_ses *ses, struct TCP_Server_Info *server)
 	struct cifs_server_iface *old_iface = NULL;
 	struct cifs_server_iface *last_iface = NULL;
 	struct sockaddr_storage ss;
-	int rc = 0;
 
 	spin_lock(&ses->chan_lock);
 	chan_index = cifs_ses_get_chan_index(ses, server);
 	if (chan_index == CIFS_INVAL_CHAN_INDEX) {
 		spin_unlock(&ses->chan_lock);
-		return 0;
+		return;
 	}
 
 	if (ses->chans[chan_index].iface) {
 		old_iface = ses->chans[chan_index].iface;
 		if (old_iface->is_active) {
 			spin_unlock(&ses->chan_lock);
-			return 1;
+			return;
 		}
 	}
 	spin_unlock(&ses->chan_lock);
@@ -398,8 +396,8 @@ cifs_chan_update_iface(struct cifs_ses *ses, struct TCP_Server_Info *server)
 	spin_lock(&ses->iface_lock);
 	if (!ses->iface_count) {
 		spin_unlock(&ses->iface_lock);
-		cifs_dbg(VFS, "server %s does not advertise interfaces\n", ses->server->hostname);
-		return 0;
+		cifs_dbg(ONCE, "server %s does not advertise interfaces\n", ses->server->hostname);
+		return;
 	}
 
 	last_iface = list_last_entry(&ses->iface_list, struct cifs_server_iface,
@@ -439,7 +437,6 @@ cifs_chan_update_iface(struct cifs_ses *ses, struct TCP_Server_Info *server)
 	}
 
 	if (list_entry_is_head(iface, &ses->iface_list, iface_head)) {
-		rc = 1;
 		iface = NULL;
 		cifs_dbg(FYI, "unable to find a suitable iface\n");
 	}
@@ -454,7 +451,7 @@ cifs_chan_update_iface(struct cifs_ses *ses, struct TCP_Server_Info *server)
 		}
 
 		spin_unlock(&ses->iface_lock);
-		return 0;
+		return;
 	}
 
 	/* now drop the ref to the current iface */
@@ -472,28 +469,24 @@ cifs_chan_update_iface(struct cifs_ses *ses, struct TCP_Server_Info *server)
 		kref_put(&old_iface->refcount, release_iface);
 	} else if (!chan_index) {
 		/* special case: update interface for primary channel */
-		if (iface) {
-			cifs_dbg(FYI, "referencing primary channel iface: %pIS\n",
-				 &iface->sockaddr);
-			iface->num_channels++;
-			iface->weight_fulfilled++;
-		}
+		cifs_dbg(FYI, "referencing primary channel iface: %pIS\n",
+			 &iface->sockaddr);
+		iface->num_channels++;
+		iface->weight_fulfilled++;
 	}
 	spin_unlock(&ses->iface_lock);
 
-	if (iface) {
-		spin_lock(&ses->chan_lock);
-		chan_index = cifs_ses_get_chan_index(ses, server);
-		if (chan_index == CIFS_INVAL_CHAN_INDEX) {
-			spin_unlock(&ses->chan_lock);
-			return 0;
-		}
-
-		ses->chans[chan_index].iface = iface;
+	spin_lock(&ses->chan_lock);
+	chan_index = cifs_ses_get_chan_index(ses, server);
+	if (chan_index == CIFS_INVAL_CHAN_INDEX) {
 		spin_unlock(&ses->chan_lock);
+		return;
 	}
 
-	return rc;
+	ses->chans[chan_index].iface = iface;
+	spin_unlock(&ses->chan_lock);
+
+	return;
 }
 
 /*
diff --git a/fs/smb/client/smb2ops.c b/fs/smb/client/smb2ops.c
index ba734395b0..4852afe392 100644
--- a/fs/smb/client/smb2ops.c
+++ b/fs/smb/client/smb2ops.c
@@ -5429,6 +5429,7 @@ struct smb_version_operations smb30_operations = {
 	.tree_connect = SMB2_tcon,
 	.tree_disconnect = SMB2_tdis,
 	.qfs_tcon = smb3_qfs_tcon,
+	.query_server_interfaces = SMB3_request_interfaces,
 	.is_path_accessible = smb2_is_path_accessible,
 	.can_echo = smb2_can_echo,
 	.echo = SMB2_echo,
@@ -5543,6 +5544,7 @@ struct smb_version_operations smb311_operations = {
 	.tree_connect = SMB2_tcon,
 	.tree_disconnect = SMB2_tdis,
 	.qfs_tcon = smb3_qfs_tcon,
+	.query_server_interfaces = SMB3_request_interfaces,
 	.is_path_accessible = smb2_is_path_accessible,
 	.can_echo = smb2_can_echo,
 	.echo = SMB2_echo,
diff --git a/fs/smb/client/smb2pdu.c b/fs/smb/client/smb2pdu.c
index 9d34a55fdb..4d7d0bdf7a 100644
--- a/fs/smb/client/smb2pdu.c
+++ b/fs/smb/client/smb2pdu.c
@@ -409,14 +409,15 @@ skip_sess_setup:
 	spin_unlock(&ses->ses_lock);
 
 	if (!rc &&
-	    (server->capabilities & SMB2_GLOBAL_CAP_MULTI_CHANNEL)) {
+	    (server->capabilities & SMB2_GLOBAL_CAP_MULTI_CHANNEL) &&
+	    server->ops->query_server_interfaces) {
 		mutex_unlock(&ses->session_mutex);
 
 		/*
 		 * query server network interfaces, in case they change
 		 */
 		xid = get_xid();
-		rc = SMB3_request_interfaces(xid, tcon, false);
+		rc = server->ops->query_server_interfaces(xid, tcon, false);
 		free_xid(xid);
 
 		if (rc == -EOPNOTSUPP && ses->chan_count > 1) {
@@ -1536,6 +1537,11 @@ SMB2_sess_sendreceive(struct SMB2_sess_data *sess_data)
 			    &sess_data->buf0_type,
 			    CIFS_LOG_ERROR | CIFS_SESS_OP, &rsp_iov);
 	cifs_small_buf_release(sess_data->iov[0].iov_base);
+	if (rc == 0)
+		sess_data->ses->expired_pwd = false;
+	else if ((rc == -EACCES) || (rc == -EKEYEXPIRED) || (rc == -EKEYREVOKED))
+		sess_data->ses->expired_pwd = true;
+
 	memcpy(&sess_data->iov[0], &rsp_iov, sizeof(struct kvec));
 
 	return rc;
diff --git a/fs/smb/server/smb2misc.c b/fs/smb/server/smb2misc.c
index 03dded29a9..727cb49926 100644
--- a/fs/smb/server/smb2misc.c
+++ b/fs/smb/server/smb2misc.c
@@ -101,13 +101,17 @@ static int smb2_get_data_area_len(unsigned int *off, unsigned int *len,
 		*len = le16_to_cpu(((struct smb2_sess_setup_req *)hdr)->SecurityBufferLength);
 		break;
 	case SMB2_TREE_CONNECT:
-		*off = le16_to_cpu(((struct smb2_tree_connect_req *)hdr)->PathOffset);
+		*off = max_t(unsigned short int,
+			     le16_to_cpu(((struct smb2_tree_connect_req *)hdr)->PathOffset),
+			     offsetof(struct smb2_tree_connect_req, Buffer));
 		*len = le16_to_cpu(((struct smb2_tree_connect_req *)hdr)->PathLength);
 		break;
 	case SMB2_CREATE:
 	{
 		unsigned short int name_off =
-			le16_to_cpu(((struct smb2_create_req *)hdr)->NameOffset);
+			max_t(unsigned short int,
+			      le16_to_cpu(((struct smb2_create_req *)hdr)->NameOffset),
+			      offsetof(struct smb2_create_req, Buffer));
 		unsigned short int name_len =
 			le16_to_cpu(((struct smb2_create_req *)hdr)->NameLength);
 
@@ -128,11 +132,15 @@ static int smb2_get_data_area_len(unsigned int *off, unsigned int *len,
 		break;
 	}
 	case SMB2_QUERY_INFO:
-		*off = le16_to_cpu(((struct smb2_query_info_req *)hdr)->InputBufferOffset);
+		*off = max_t(unsigned int,
+			     le16_to_cpu(((struct smb2_query_info_req *)hdr)->InputBufferOffset),
+			     offsetof(struct smb2_query_info_req, Buffer));
 		*len = le32_to_cpu(((struct smb2_query_info_req *)hdr)->InputBufferLength);
 		break;
 	case SMB2_SET_INFO:
-		*off = le16_to_cpu(((struct smb2_set_info_req *)hdr)->BufferOffset);
+		*off = max_t(unsigned int,
+			     le16_to_cpu(((struct smb2_set_info_req *)hdr)->BufferOffset),
+			     offsetof(struct smb2_set_info_req, Buffer));
 		*len = le32_to_cpu(((struct smb2_set_info_req *)hdr)->BufferLength);
 		break;
 	case SMB2_READ:
@@ -142,7 +150,7 @@ static int smb2_get_data_area_len(unsigned int *off, unsigned int *len,
 	case SMB2_WRITE:
 		if (((struct smb2_write_req *)hdr)->DataOffset ||
 		    ((struct smb2_write_req *)hdr)->Length) {
-			*off = max_t(unsigned int,
+			*off = max_t(unsigned short int,
 				     le16_to_cpu(((struct smb2_write_req *)hdr)->DataOffset),
 				     offsetof(struct smb2_write_req, Buffer));
 			*len = le32_to_cpu(((struct smb2_write_req *)hdr)->Length);
@@ -153,7 +161,9 @@ static int smb2_get_data_area_len(unsigned int *off, unsigned int *len,
 		*len = le16_to_cpu(((struct smb2_write_req *)hdr)->WriteChannelInfoLength);
 		break;
 	case SMB2_QUERY_DIRECTORY:
-		*off = le16_to_cpu(((struct smb2_query_directory_req *)hdr)->FileNameOffset);
+		*off = max_t(unsigned short int,
+			     le16_to_cpu(((struct smb2_query_directory_req *)hdr)->FileNameOffset),
+			     offsetof(struct smb2_query_directory_req, Buffer));
 		*len = le16_to_cpu(((struct smb2_query_directory_req *)hdr)->FileNameLength);
 		break;
 	case SMB2_LOCK:
@@ -168,7 +178,9 @@ static int smb2_get_data_area_len(unsigned int *off, unsigned int *len,
 		break;
 	}
 	case SMB2_IOCTL:
-		*off = le32_to_cpu(((struct smb2_ioctl_req *)hdr)->InputOffset);
+		*off = max_t(unsigned int,
+			     le32_to_cpu(((struct smb2_ioctl_req *)hdr)->InputOffset),
+			     offsetof(struct smb2_ioctl_req, Buffer));
 		*len = le32_to_cpu(((struct smb2_ioctl_req *)hdr)->InputCount);
 		break;
 	default:
diff --git a/fs/smb/server/smb2pdu.c b/fs/smb/server/smb2pdu.c
index 0c97d3c860..88db6e207e 100644
--- a/fs/smb/server/smb2pdu.c
+++ b/fs/smb/server/smb2pdu.c
@@ -1951,7 +1951,7 @@ int smb2_tree_connect(struct ksmbd_work *work)
 
 	WORK_BUFFERS(work, req, rsp);
 
-	treename = smb_strndup_from_utf16(req->Buffer,
+	treename = smb_strndup_from_utf16((char *)req + le16_to_cpu(req->PathOffset),
 					  le16_to_cpu(req->PathLength), true,
 					  conn->local_nls);
 	if (IS_ERR(treename)) {
@@ -2704,7 +2704,7 @@ int smb2_open(struct ksmbd_work *work)
 			goto err_out2;
 		}
 
-		name = smb2_get_name(req->Buffer,
+		name = smb2_get_name((char *)req + le16_to_cpu(req->NameOffset),
 				     le16_to_cpu(req->NameLength),
 				     work->conn->local_nls);
 		if (IS_ERR(name)) {
@@ -3828,11 +3828,16 @@ static int process_query_dir_entries(struct smb2_query_dir_private *priv)
 		}
 
 		ksmbd_kstat.kstat = &kstat;
-		if (priv->info_level != FILE_NAMES_INFORMATION)
-			ksmbd_vfs_fill_dentry_attrs(priv->work,
-						    idmap,
-						    dent,
-						    &ksmbd_kstat);
+		if (priv->info_level != FILE_NAMES_INFORMATION) {
+			rc = ksmbd_vfs_fill_dentry_attrs(priv->work,
+							 idmap,
+							 dent,
+							 &ksmbd_kstat);
+			if (rc) {
+				dput(dent);
+				continue;
+			}
+		}
 
 		rc = smb2_populate_readdir_entry(priv->work->conn,
 						 priv->info_level,
@@ -4075,7 +4080,7 @@ int smb2_query_dir(struct ksmbd_work *work)
 	}
 
 	srch_flag = req->Flags;
-	srch_ptr = smb_strndup_from_utf16(req->Buffer,
+	srch_ptr = smb_strndup_from_utf16((char *)req + le16_to_cpu(req->FileNameOffset),
 					  le16_to_cpu(req->FileNameLength), 1,
 					  conn->local_nls);
 	if (IS_ERR(srch_ptr)) {
@@ -4335,7 +4340,8 @@ static int smb2_get_ea(struct ksmbd_work *work, struct ksmbd_file *fp,
 		    sizeof(struct smb2_ea_info_req))
 			return -EINVAL;
 
-		ea_req = (struct smb2_ea_info_req *)req->Buffer;
+		ea_req = (struct smb2_ea_info_req *)((char *)req +
+						     le16_to_cpu(req->InputBufferOffset));
 	} else {
 		/* need to send all EAs, if no specific EA is requested*/
 		if (le32_to_cpu(req->Flags) & SL_RETURN_SINGLE_ENTRY)
@@ -4480,6 +4486,7 @@ static int get_file_basic_info(struct smb2_query_info_rsp *rsp,
 	struct smb2_file_basic_info *basic_info;
 	struct kstat stat;
 	u64 time;
+	int ret;
 
 	if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) {
 		pr_err("no right to read the attributes : 0x%x\n",
@@ -4487,9 +4494,12 @@ static int get_file_basic_info(struct smb2_query_info_rsp *rsp,
 		return -EACCES;
 	}
 
+	ret = vfs_getattr(&fp->filp->f_path, &stat, STATX_BASIC_STATS,
+			  AT_STATX_SYNC_AS_STAT);
+	if (ret)
+		return ret;
+
 	basic_info = (struct smb2_file_basic_info *)rsp->Buffer;
-	generic_fillattr(file_mnt_idmap(fp->filp), STATX_BASIC_STATS,
-			 file_inode(fp->filp), &stat);
 	basic_info->CreationTime = cpu_to_le64(fp->create_time);
 	time = ksmbd_UnixTimeToNT(stat.atime);
 	basic_info->LastAccessTime = cpu_to_le64(time);
@@ -4504,27 +4514,31 @@ static int get_file_basic_info(struct smb2_query_info_rsp *rsp,
 	return 0;
 }
 
-static void get_file_standard_info(struct smb2_query_info_rsp *rsp,
-				   struct ksmbd_file *fp, void *rsp_org)
+static int get_file_standard_info(struct smb2_query_info_rsp *rsp,
+				  struct ksmbd_file *fp, void *rsp_org)
 {
 	struct smb2_file_standard_info *sinfo;
 	unsigned int delete_pending;
-	struct inode *inode;
 	struct kstat stat;
+	int ret;
 
-	inode = file_inode(fp->filp);
-	generic_fillattr(file_mnt_idmap(fp->filp), STATX_BASIC_STATS, inode, &stat);
+	ret = vfs_getattr(&fp->filp->f_path, &stat, STATX_BASIC_STATS,
+			  AT_STATX_SYNC_AS_STAT);
+	if (ret)
+		return ret;
 
 	sinfo = (struct smb2_file_standard_info *)rsp->Buffer;
 	delete_pending = ksmbd_inode_pending_delete(fp);
 
-	sinfo->AllocationSize = cpu_to_le64(inode->i_blocks << 9);
+	sinfo->AllocationSize = cpu_to_le64(stat.blocks << 9);
 	sinfo->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size);
 	sinfo->NumberOfLinks = cpu_to_le32(get_nlink(&stat) - delete_pending);
 	sinfo->DeletePending = delete_pending;
 	sinfo->Directory = S_ISDIR(stat.mode) ? 1 : 0;
 	rsp->OutputBufferLength =
 		cpu_to_le32(sizeof(struct smb2_file_standard_info));
+
+	return 0;
 }
 
 static void get_file_alignment_info(struct smb2_query_info_rsp *rsp,
@@ -4546,11 +4560,11 @@ static int get_file_all_info(struct ksmbd_work *work,
 	struct ksmbd_conn *conn = work->conn;
 	struct smb2_file_all_info *file_info;
 	unsigned int delete_pending;
-	struct inode *inode;
 	struct kstat stat;
 	int conv_len;
 	char *filename;
 	u64 time;
+	int ret;
 
 	if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) {
 		ksmbd_debug(SMB, "no right to read the attributes : 0x%x\n",
@@ -4562,8 +4576,10 @@ static int get_file_all_info(struct ksmbd_work *work,
 	if (IS_ERR(filename))
 		return PTR_ERR(filename);
 
-	inode = file_inode(fp->filp);
-	generic_fillattr(file_mnt_idmap(fp->filp), STATX_BASIC_STATS, inode, &stat);
+	ret = vfs_getattr(&fp->filp->f_path, &stat, STATX_BASIC_STATS,
+			  AT_STATX_SYNC_AS_STAT);
+	if (ret)
+		return ret;
 
 	ksmbd_debug(SMB, "filename = %s\n", filename);
 	delete_pending = ksmbd_inode_pending_delete(fp);
@@ -4579,7 +4595,7 @@ static int get_file_all_info(struct ksmbd_work *work,
 	file_info->Attributes = fp->f_ci->m_fattr;
 	file_info->Pad1 = 0;
 	file_info->AllocationSize =
-		cpu_to_le64(inode->i_blocks << 9);
+		cpu_to_le64(stat.blocks << 9);
 	file_info->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size);
 	file_info->NumberOfLinks =
 			cpu_to_le32(get_nlink(&stat) - delete_pending);
@@ -4623,10 +4639,10 @@ static void get_file_alternate_info(struct ksmbd_work *work,
 		cpu_to_le32(sizeof(struct smb2_file_alt_name_info) + conv_len);
 }
 
-static void get_file_stream_info(struct ksmbd_work *work,
-				 struct smb2_query_info_rsp *rsp,
-				 struct ksmbd_file *fp,
-				 void *rsp_org)
+static int get_file_stream_info(struct ksmbd_work *work,
+				struct smb2_query_info_rsp *rsp,
+				struct ksmbd_file *fp,
+				void *rsp_org)
 {
 	struct ksmbd_conn *conn = work->conn;
 	struct smb2_file_stream_info *file_info;
@@ -4637,9 +4653,13 @@ static void get_file_stream_info(struct ksmbd_work *work,
 	int nbytes = 0, streamlen, stream_name_len, next, idx = 0;
 	int buf_free_len;
 	struct smb2_query_info_req *req = ksmbd_req_buf_next(work);
+	int ret;
+
+	ret = vfs_getattr(&fp->filp->f_path, &stat, STATX_BASIC_STATS,
+			  AT_STATX_SYNC_AS_STAT);
+	if (ret)
+		return ret;
 
-	generic_fillattr(file_mnt_idmap(fp->filp), STATX_BASIC_STATS,
-			 file_inode(fp->filp), &stat);
 	file_info = (struct smb2_file_stream_info *)rsp->Buffer;
 
 	buf_free_len =
@@ -4720,29 +4740,37 @@ out:
 	kvfree(xattr_list);
 
 	rsp->OutputBufferLength = cpu_to_le32(nbytes);
+
+	return 0;
 }
 
-static void get_file_internal_info(struct smb2_query_info_rsp *rsp,
-				   struct ksmbd_file *fp, void *rsp_org)
+static int get_file_internal_info(struct smb2_query_info_rsp *rsp,
+				  struct ksmbd_file *fp, void *rsp_org)
 {
 	struct smb2_file_internal_info *file_info;
 	struct kstat stat;
+	int ret;
+
+	ret = vfs_getattr(&fp->filp->f_path, &stat, STATX_BASIC_STATS,
+			  AT_STATX_SYNC_AS_STAT);
+	if (ret)
+		return ret;
 
-	generic_fillattr(file_mnt_idmap(fp->filp), STATX_BASIC_STATS,
-			 file_inode(fp->filp), &stat);
 	file_info = (struct smb2_file_internal_info *)rsp->Buffer;
 	file_info->IndexNumber = cpu_to_le64(stat.ino);
 	rsp->OutputBufferLength =
 		cpu_to_le32(sizeof(struct smb2_file_internal_info));
+
+	return 0;
 }
 
 static int get_file_network_open_info(struct smb2_query_info_rsp *rsp,
 				      struct ksmbd_file *fp, void *rsp_org)
 {
 	struct smb2_file_ntwrk_info *file_info;
-	struct inode *inode;
 	struct kstat stat;
 	u64 time;
+	int ret;
 
 	if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) {
 		pr_err("no right to read the attributes : 0x%x\n",
@@ -4750,10 +4778,12 @@ static int get_file_network_open_info(struct smb2_query_info_rsp *rsp,
 		return -EACCES;
 	}
 
-	file_info = (struct smb2_file_ntwrk_info *)rsp->Buffer;
+	ret = vfs_getattr(&fp->filp->f_path, &stat, STATX_BASIC_STATS,
+			  AT_STATX_SYNC_AS_STAT);
+	if (ret)
+		return ret;
 
-	inode = file_inode(fp->filp);
-	generic_fillattr(file_mnt_idmap(fp->filp), STATX_BASIC_STATS, inode, &stat);
+	file_info = (struct smb2_file_ntwrk_info *)rsp->Buffer;
 
 	file_info->CreationTime = cpu_to_le64(fp->create_time);
 	time = ksmbd_UnixTimeToNT(stat.atime);
@@ -4763,8 +4793,7 @@ static int get_file_network_open_info(struct smb2_query_info_rsp *rsp,
 	time = ksmbd_UnixTimeToNT(stat.ctime);
 	file_info->ChangeTime = cpu_to_le64(time);
 	file_info->Attributes = fp->f_ci->m_fattr;
-	file_info->AllocationSize =
-		cpu_to_le64(inode->i_blocks << 9);
+	file_info->AllocationSize = cpu_to_le64(stat.blocks << 9);
 	file_info->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size);
 	file_info->Reserved = cpu_to_le32(0);
 	rsp->OutputBufferLength =
@@ -4804,14 +4833,17 @@ static void get_file_mode_info(struct smb2_query_info_rsp *rsp,
 		cpu_to_le32(sizeof(struct smb2_file_mode_info));
 }
 
-static void get_file_compression_info(struct smb2_query_info_rsp *rsp,
-				      struct ksmbd_file *fp, void *rsp_org)
+static int get_file_compression_info(struct smb2_query_info_rsp *rsp,
+				     struct ksmbd_file *fp, void *rsp_org)
 {
 	struct smb2_file_comp_info *file_info;
 	struct kstat stat;
+	int ret;
 
-	generic_fillattr(file_mnt_idmap(fp->filp), STATX_BASIC_STATS,
-			 file_inode(fp->filp), &stat);
+	ret = vfs_getattr(&fp->filp->f_path, &stat, STATX_BASIC_STATS,
+			  AT_STATX_SYNC_AS_STAT);
+	if (ret)
+		return ret;
 
 	file_info = (struct smb2_file_comp_info *)rsp->Buffer;
 	file_info->CompressedFileSize = cpu_to_le64(stat.blocks << 9);
@@ -4823,6 +4855,8 @@ static void get_file_compression_info(struct smb2_query_info_rsp *rsp,
 
 	rsp->OutputBufferLength =
 		cpu_to_le32(sizeof(struct smb2_file_comp_info));
+
+	return 0;
 }
 
 static int get_file_attribute_tag_info(struct smb2_query_info_rsp *rsp,
@@ -4844,7 +4878,7 @@ static int get_file_attribute_tag_info(struct smb2_query_info_rsp *rsp,
 	return 0;
 }
 
-static void find_file_posix_info(struct smb2_query_info_rsp *rsp,
+static int find_file_posix_info(struct smb2_query_info_rsp *rsp,
 				struct ksmbd_file *fp, void *rsp_org)
 {
 	struct smb311_posix_qinfo *file_info;
@@ -4852,24 +4886,31 @@ static void find_file_posix_info(struct smb2_query_info_rsp *rsp,
 	struct mnt_idmap *idmap = file_mnt_idmap(fp->filp);
 	vfsuid_t vfsuid = i_uid_into_vfsuid(idmap, inode);
 	vfsgid_t vfsgid = i_gid_into_vfsgid(idmap, inode);
+	struct kstat stat;
 	u64 time;
 	int out_buf_len = sizeof(struct smb311_posix_qinfo) + 32;
+	int ret;
+
+	ret = vfs_getattr(&fp->filp->f_path, &stat, STATX_BASIC_STATS,
+			  AT_STATX_SYNC_AS_STAT);
+	if (ret)
+		return ret;
 
 	file_info = (struct smb311_posix_qinfo *)rsp->Buffer;
 	file_info->CreationTime = cpu_to_le64(fp->create_time);
-	time = ksmbd_UnixTimeToNT(inode_get_atime(inode));
+	time = ksmbd_UnixTimeToNT(stat.atime);
 	file_info->LastAccessTime = cpu_to_le64(time);
-	time = ksmbd_UnixTimeToNT(inode_get_mtime(inode));
+	time = ksmbd_UnixTimeToNT(stat.mtime);
 	file_info->LastWriteTime = cpu_to_le64(time);
-	time = ksmbd_UnixTimeToNT(inode_get_ctime(inode));
+	time = ksmbd_UnixTimeToNT(stat.ctime);
 	file_info->ChangeTime = cpu_to_le64(time);
 	file_info->DosAttributes = fp->f_ci->m_fattr;
-	file_info->Inode = cpu_to_le64(inode->i_ino);
-	file_info->EndOfFile = cpu_to_le64(inode->i_size);
-	file_info->AllocationSize = cpu_to_le64(inode->i_blocks << 9);
-	file_info->HardLinks = cpu_to_le32(inode->i_nlink);
-	file_info->Mode = cpu_to_le32(inode->i_mode & 0777);
-	file_info->DeviceId = cpu_to_le32(inode->i_rdev);
+	file_info->Inode = cpu_to_le64(stat.ino);
+	file_info->EndOfFile = cpu_to_le64(stat.size);
+	file_info->AllocationSize = cpu_to_le64(stat.blocks << 9);
+	file_info->HardLinks = cpu_to_le32(stat.nlink);
+	file_info->Mode = cpu_to_le32(stat.mode & 0777);
+	file_info->DeviceId = cpu_to_le32(stat.rdev);
 
 	/*
 	 * Sids(32) contain two sids(Domain sid(16), UNIX group sid(16)).
@@ -4882,6 +4923,8 @@ static void find_file_posix_info(struct smb2_query_info_rsp *rsp,
 		  SIDUNIX_GROUP, (struct smb_sid *)&file_info->Sids[16]);
 
 	rsp->OutputBufferLength = cpu_to_le32(out_buf_len);
+
+	return 0;
 }
 
 static int smb2_get_info_file(struct ksmbd_work *work,
@@ -4930,7 +4973,7 @@ static int smb2_get_info_file(struct ksmbd_work *work,
 		break;
 
 	case FILE_STANDARD_INFORMATION:
-		get_file_standard_info(rsp, fp, work->response_buf);
+		rc = get_file_standard_info(rsp, fp, work->response_buf);
 		break;
 
 	case FILE_ALIGNMENT_INFORMATION:
@@ -4946,11 +4989,11 @@ static int smb2_get_info_file(struct ksmbd_work *work,
 		break;
 
 	case FILE_STREAM_INFORMATION:
-		get_file_stream_info(work, rsp, fp, work->response_buf);
+		rc = get_file_stream_info(work, rsp, fp, work->response_buf);
 		break;
 
 	case FILE_INTERNAL_INFORMATION:
-		get_file_internal_info(rsp, fp, work->response_buf);
+		rc = get_file_internal_info(rsp, fp, work->response_buf);
 		break;
 
 	case FILE_NETWORK_OPEN_INFORMATION:
@@ -4974,7 +5017,7 @@ static int smb2_get_info_file(struct ksmbd_work *work,
 		break;
 
 	case FILE_COMPRESSION_INFORMATION:
-		get_file_compression_info(rsp, fp, work->response_buf);
+		rc = get_file_compression_info(rsp, fp, work->response_buf);
 		break;
 
 	case FILE_ATTRIBUTE_TAG_INFORMATION:
@@ -4985,7 +5028,7 @@ static int smb2_get_info_file(struct ksmbd_work *work,
 			pr_err("client doesn't negotiate with SMB3.1.1 POSIX Extensions\n");
 			rc = -EOPNOTSUPP;
 		} else {
-			find_file_posix_info(rsp, fp, work->response_buf);
+			rc = find_file_posix_info(rsp, fp, work->response_buf);
 		}
 		break;
 	default:
@@ -5398,7 +5441,6 @@ int smb2_close(struct ksmbd_work *work)
 	struct smb2_close_rsp *rsp;
 	struct ksmbd_conn *conn = work->conn;
 	struct ksmbd_file *fp;
-	struct inode *inode;
 	u64 time;
 	int err = 0;
 
@@ -5453,24 +5495,33 @@ int smb2_close(struct ksmbd_work *work)
 	rsp->Reserved = 0;
 
 	if (req->Flags == SMB2_CLOSE_FLAG_POSTQUERY_ATTRIB) {
+		struct kstat stat;
+		int ret;
+
 		fp = ksmbd_lookup_fd_fast(work, volatile_id);
 		if (!fp) {
 			err = -ENOENT;
 			goto out;
 		}
 
-		inode = file_inode(fp->filp);
+		ret = vfs_getattr(&fp->filp->f_path, &stat, STATX_BASIC_STATS,
+				  AT_STATX_SYNC_AS_STAT);
+		if (ret) {
+			ksmbd_fd_put(work, fp);
+			goto out;
+		}
+
 		rsp->Flags = SMB2_CLOSE_FLAG_POSTQUERY_ATTRIB;
-		rsp->AllocationSize = S_ISDIR(inode->i_mode) ? 0 :
-			cpu_to_le64(inode->i_blocks << 9);
-		rsp->EndOfFile = cpu_to_le64(inode->i_size);
+		rsp->AllocationSize = S_ISDIR(stat.mode) ? 0 :
+			cpu_to_le64(stat.blocks << 9);
+		rsp->EndOfFile = cpu_to_le64(stat.size);
 		rsp->Attributes = fp->f_ci->m_fattr;
 		rsp->CreationTime = cpu_to_le64(fp->create_time);
-		time = ksmbd_UnixTimeToNT(inode_get_atime(inode));
+		time = ksmbd_UnixTimeToNT(stat.atime);
 		rsp->LastAccessTime = cpu_to_le64(time);
-		time = ksmbd_UnixTimeToNT(inode_get_mtime(inode));
+		time = ksmbd_UnixTimeToNT(stat.mtime);
 		rsp->LastWriteTime = cpu_to_le64(time);
-		time = ksmbd_UnixTimeToNT(inode_get_ctime(inode));
+		time = ksmbd_UnixTimeToNT(stat.ctime);
 		rsp->ChangeTime = cpu_to_le64(time);
 		ksmbd_fd_put(work, fp);
 	} else {
@@ -5759,15 +5810,21 @@ static int set_file_allocation_info(struct ksmbd_work *work,
 
 	loff_t alloc_blks;
 	struct inode *inode;
+	struct kstat stat;
 	int rc;
 
 	if (!(fp->daccess & FILE_WRITE_DATA_LE))
 		return -EACCES;
 
+	rc = vfs_getattr(&fp->filp->f_path, &stat, STATX_BASIC_STATS,
+			 AT_STATX_SYNC_AS_STAT);
+	if (rc)
+		return rc;
+
 	alloc_blks = (le64_to_cpu(file_alloc_info->AllocationSize) + 511) >> 9;
 	inode = file_inode(fp->filp);
 
-	if (alloc_blks > inode->i_blocks) {
+	if (alloc_blks > stat.blocks) {
 		smb_break_all_levII_oplock(work, fp, 1);
 		rc = vfs_fallocate(fp->filp, FALLOC_FL_KEEP_SIZE, 0,
 				   alloc_blks * 512);
@@ -5775,7 +5832,7 @@ static int set_file_allocation_info(struct ksmbd_work *work,
 			pr_err("vfs_fallocate is failed : %d\n", rc);
 			return rc;
 		}
-	} else if (alloc_blks < inode->i_blocks) {
+	} else if (alloc_blks < stat.blocks) {
 		loff_t size;
 
 		/*
@@ -5930,6 +5987,7 @@ static int smb2_set_info_file(struct ksmbd_work *work, struct ksmbd_file *fp,
 			      struct ksmbd_share_config *share)
 {
 	unsigned int buf_len = le32_to_cpu(req->BufferLength);
+	char *buffer = (char *)req + le16_to_cpu(req->BufferOffset);
 
 	switch (req->FileInfoClass) {
 	case FILE_BASIC_INFORMATION:
@@ -5937,7 +5995,7 @@ static int smb2_set_info_file(struct ksmbd_work *work, struct ksmbd_file *fp,
 		if (buf_len < sizeof(struct smb2_file_basic_info))
 			return -EINVAL;
 
-		return set_file_basic_info(fp, (struct smb2_file_basic_info *)req->Buffer, share);
+		return set_file_basic_info(fp, (struct smb2_file_basic_info *)buffer, share);
 	}
 	case FILE_ALLOCATION_INFORMATION:
 	{
@@ -5945,7 +6003,7 @@ static int smb2_set_info_file(struct ksmbd_work *work, struct ksmbd_file *fp,
 			return -EINVAL;
 
 		return set_file_allocation_info(work, fp,
-						(struct smb2_file_alloc_info *)req->Buffer);
+						(struct smb2_file_alloc_info *)buffer);
 	}
 	case FILE_END_OF_FILE_INFORMATION:
 	{
@@ -5953,7 +6011,7 @@ static int smb2_set_info_file(struct ksmbd_work *work, struct ksmbd_file *fp,
 			return -EINVAL;
 
 		return set_end_of_file_info(work, fp,
-					    (struct smb2_file_eof_info *)req->Buffer);
+					    (struct smb2_file_eof_info *)buffer);
 	}
 	case FILE_RENAME_INFORMATION:
 	{
@@ -5961,7 +6019,7 @@ static int smb2_set_info_file(struct ksmbd_work *work, struct ksmbd_file *fp,
 			return -EINVAL;
 
 		return set_rename_info(work, fp,
-				       (struct smb2_file_rename_info *)req->Buffer,
+				       (struct smb2_file_rename_info *)buffer,
 				       buf_len);
 	}
 	case FILE_LINK_INFORMATION:
@@ -5970,7 +6028,7 @@ static int smb2_set_info_file(struct ksmbd_work *work, struct ksmbd_file *fp,
 			return -EINVAL;
 
 		return smb2_create_link(work, work->tcon->share_conf,
-					(struct smb2_file_link_info *)req->Buffer,
+					(struct smb2_file_link_info *)buffer,
 					buf_len, fp->filp,
 					work->conn->local_nls);
 	}
@@ -5980,7 +6038,7 @@ static int smb2_set_info_file(struct ksmbd_work *work, struct ksmbd_file *fp,
 			return -EINVAL;
 
 		return set_file_disposition_info(fp,
-						 (struct smb2_file_disposition_info *)req->Buffer);
+						 (struct smb2_file_disposition_info *)buffer);
 	}
 	case FILE_FULL_EA_INFORMATION:
 	{
@@ -5993,7 +6051,7 @@ static int smb2_set_info_file(struct ksmbd_work *work, struct ksmbd_file *fp,
 		if (buf_len < sizeof(struct smb2_ea_info))
 			return -EINVAL;
 
-		return smb2_set_ea((struct smb2_ea_info *)req->Buffer,
+		return smb2_set_ea((struct smb2_ea_info *)buffer,
 				   buf_len, &fp->filp->f_path, true);
 	}
 	case FILE_POSITION_INFORMATION:
@@ -6001,14 +6059,14 @@ static int smb2_set_info_file(struct ksmbd_work *work, struct ksmbd_file *fp,
 		if (buf_len < sizeof(struct smb2_file_pos_info))
 			return -EINVAL;
 
-		return set_file_position_info(fp, (struct smb2_file_pos_info *)req->Buffer);
+		return set_file_position_info(fp, (struct smb2_file_pos_info *)buffer);
 	}
 	case FILE_MODE_INFORMATION:
 	{
 		if (buf_len < sizeof(struct smb2_file_mode_info))
 			return -EINVAL;
 
-		return set_file_mode_info(fp, (struct smb2_file_mode_info *)req->Buffer);
+		return set_file_mode_info(fp, (struct smb2_file_mode_info *)buffer);
 	}
 	}
 
@@ -6089,7 +6147,7 @@ int smb2_set_info(struct ksmbd_work *work)
 		}
 		rc = smb2_set_info_sec(fp,
 				       le32_to_cpu(req->AdditionalInformation),
-				       req->Buffer,
+				       (char *)req + le16_to_cpu(req->BufferOffset),
 				       le32_to_cpu(req->BufferLength));
 		ksmbd_revert_fsids(work);
 		break;
@@ -7535,7 +7593,7 @@ static int fsctl_pipe_transceive(struct ksmbd_work *work, u64 id,
 				 struct smb2_ioctl_rsp *rsp)
 {
 	struct ksmbd_rpc_command *rpc_resp;
-	char *data_buf = (char *)&req->Buffer[0];
+	char *data_buf = (char *)req + le32_to_cpu(req->InputOffset);
 	int nbytes = 0;
 
 	rpc_resp = ksmbd_rpc_ioctl(work->sess, id, data_buf,
@@ -7648,6 +7706,7 @@ int smb2_ioctl(struct ksmbd_work *work)
 	u64 id = KSMBD_NO_FID;
 	struct ksmbd_conn *conn = work->conn;
 	int ret = 0;
+	char *buffer;
 
 	if (work->next_smb2_rcv_hdr_off) {
 		req = ksmbd_req_buf_next(work);
@@ -7670,6 +7729,8 @@ int smb2_ioctl(struct ksmbd_work *work)
 		goto out;
 	}
 
+	buffer = (char *)req + le32_to_cpu(req->InputOffset);
+
 	cnt_code = le32_to_cpu(req->CtlCode);
 	ret = smb2_calc_max_out_buf_len(work, 48,
 					le32_to_cpu(req->MaxOutputResponse));
@@ -7727,7 +7788,7 @@ int smb2_ioctl(struct ksmbd_work *work)
 		}
 
 		ret = fsctl_validate_negotiate_info(conn,
-			(struct validate_negotiate_info_req *)&req->Buffer[0],
+			(struct validate_negotiate_info_req *)buffer,
 			(struct validate_negotiate_info_rsp *)&rsp->Buffer[0],
 			in_buf_len);
 		if (ret < 0)
@@ -7780,7 +7841,7 @@ int smb2_ioctl(struct ksmbd_work *work)
 		rsp->VolatileFileId = req->VolatileFileId;
 		rsp->PersistentFileId = req->PersistentFileId;
 		fsctl_copychunk(work,
-				(struct copychunk_ioctl_req *)&req->Buffer[0],
+				(struct copychunk_ioctl_req *)buffer,
 				le32_to_cpu(req->CtlCode),
 				le32_to_cpu(req->InputCount),
 				req->VolatileFileId,
@@ -7793,8 +7854,7 @@ int smb2_ioctl(struct ksmbd_work *work)
 			goto out;
 		}
 
-		ret = fsctl_set_sparse(work, id,
-				       (struct file_sparse *)&req->Buffer[0]);
+		ret = fsctl_set_sparse(work, id, (struct file_sparse *)buffer);
 		if (ret < 0)
 			goto out;
 		break;
@@ -7817,7 +7877,7 @@ int smb2_ioctl(struct ksmbd_work *work)
 		}
 
 		zero_data =
-			(struct file_zero_data_information *)&req->Buffer[0];
+			(struct file_zero_data_information *)buffer;
 
 		off = le64_to_cpu(zero_data->FileOffset);
 		bfz = le64_to_cpu(zero_data->BeyondFinalZero);
@@ -7848,7 +7908,7 @@ int smb2_ioctl(struct ksmbd_work *work)
 		}
 
 		ret = fsctl_query_allocated_ranges(work, id,
-			(struct file_allocated_range_buffer *)&req->Buffer[0],
+			(struct file_allocated_range_buffer *)buffer,
 			(struct file_allocated_range_buffer *)&rsp->Buffer[0],
 			out_buf_len /
 			sizeof(struct file_allocated_range_buffer), &nbytes);
@@ -7892,7 +7952,7 @@ int smb2_ioctl(struct ksmbd_work *work)
 			goto out;
 		}
 
-		dup_ext = (struct duplicate_extents_to_file *)&req->Buffer[0];
+		dup_ext = (struct duplicate_extents_to_file *)buffer;
 
 		fp_in = ksmbd_lookup_fd_slow(work, dup_ext->VolatileFileHandle,
 					     dup_ext->PersistentFileHandle);
diff --git a/fs/smb/server/smb_common.c b/fs/smb/server/smb_common.c
index 7c98bf6997..fcaf373cc0 100644
--- a/fs/smb/server/smb_common.c
+++ b/fs/smb/server/smb_common.c
@@ -457,10 +457,13 @@ int ksmbd_populate_dot_dotdot_entries(struct ksmbd_work *work, int info_level,
 			}
 
 			ksmbd_kstat.kstat = &kstat;
-			ksmbd_vfs_fill_dentry_attrs(work,
-						    idmap,
-						    dentry,
-						    &ksmbd_kstat);
+			rc = ksmbd_vfs_fill_dentry_attrs(work,
+							 idmap,
+							 dentry,
+							 &ksmbd_kstat);
+			if (rc)
+				break;
+
 			rc = fn(conn, info_level, d_info, &ksmbd_kstat);
 			if (rc)
 				break;
diff --git a/fs/smb/server/vfs.c b/fs/smb/server/vfs.c
index 4277750a6d..a8936aba77 100644
--- a/fs/smb/server/vfs.c
+++ b/fs/smb/server/vfs.c
@@ -1669,11 +1669,19 @@ int ksmbd_vfs_fill_dentry_attrs(struct ksmbd_work *work,
 				struct dentry *dentry,
 				struct ksmbd_kstat *ksmbd_kstat)
 {
+	struct ksmbd_share_config *share_conf = work->tcon->share_conf;
 	u64 time;
 	int rc;
+	struct path path = {
+		.mnt = share_conf->vfs_path.mnt,
+		.dentry = dentry,
+	};
 
-	generic_fillattr(idmap, STATX_BASIC_STATS, d_inode(dentry),
-			 ksmbd_kstat->kstat);
+	rc = vfs_getattr(&path, ksmbd_kstat->kstat,
+			 STATX_BASIC_STATS | STATX_BTIME,
+			 AT_STATX_SYNC_AS_STAT);
+	if (rc)
+		return rc;
 
 	time = ksmbd_UnixTimeToNT(ksmbd_kstat->kstat->ctime);
 	ksmbd_kstat->create_time = time;