smb3: fix corrupt path in subdirs on smb311 with posix

Signed-off-by: Steve French <stfrench@microsoft.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/fs/cifs/smb2misc.c b/fs/cifs/smb2misc.c
index 0de87ca33e2e..3ff7cec2da81 100644
--- a/fs/cifs/smb2misc.c
+++ b/fs/cifs/smb2misc.c
@@ -454,7 +454,8 @@ cifs_convert_path_to_utf16(const char *from, struct cifs_sb_info *cifs_sb)
 #ifdef CONFIG_CIFS_SMB311
         /* SMB311 POSIX extensions paths do not include leading slash */
         else if (cifs_sb_master_tlink(cifs_sb) &&
-                 cifs_sb_master_tcon(cifs_sb)->posix_extensions) {
+                 cifs_sb_master_tcon(cifs_sb)->posix_extensions &&
+                 (from[0] == '/')) {
                 start_of_path = from + 1;
         }
 #endif /* 311 */