cifs: leak on mount if we share superblock

cifs_sb and nls end up leaked...

Acked-by: Pavel Shilovsky <piastryyy@gmail.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 2 insertions, 0 deletions

diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 8f7451f3c8e6..4162ee45d043 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -701,6 +701,8 @@ cifs_do_mount(struct file_system_type *fs_type,
 
         if (sb->s_fs_info) {
                 cFYI(1, "Use existing superblock");
+                unload_nls(cifs_sb->local_nls);
+                kfree(cifs_sb);
                 goto out_shared;
         }