CIFS: Fix a memory leak when a lease break comes

This happens when we receive a lease break from a server, then
find an appropriate lease key in opened files and schedule the
oplock_break slow work. lw pointer isn't freed in this case.

Cc: <stable@vger.kernel.org>
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org>
Signed-off-by: Steve French <smfrench@gmail.com>

diff --git a/fs/cifs/smb2misc.c b/fs/cifs/smb2misc.c
index 6103359fb598b79f79523e4246c7e9874dcefab5..38c93c305c9ed345ed7bbf1c1d3b88a6697f3347 100644 (file)
--- a/fs/cifs/smb2misc.c
+++ b/fs/cifs/smb2misc.c
@@ -477,6 +477,7 @@ smb2_is_valid_lease_break(char *buffer, struct TCP_Server_Info *server)
 
                                queue_work(cifsiod_wq, &cfile->oplock_break);
 
+                               kfree(lw);
                                spin_unlock(&cifs_file_list_lock);
                                spin_unlock(&cifs_tcp_ses_lock);
                                return true;