[CIFS] Fix oops when negotiating lanman and no password specified

Pointed out by Guenter Kukkukk

Signed-of-by: Steve French <sfrench@us.ibm.com>
(cherry picked from bbf33d512da608c7221fec42b56b9ef89c25a5ee commit)

diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
index a89efaf78a266ef2d7a4c01d8f5876c5969504dc..4bc250b2d9fc19aa27aea309b900b186b95a2602 100644 (file)
--- a/fs/cifs/cifsencrypt.c
+++ b/fs/cifs/cifsencrypt.c
@@ -277,7 +277,8 @@ void calc_lanman_hash(struct cifsSesInfo * ses, char * lnm_session_key)
                return;
 
        memset(password_with_pad, 0, CIFS_ENCPWD_SIZE);
-       strncpy(password_with_pad, ses->password, CIFS_ENCPWD_SIZE);
+       if(ses->password)
+               strncpy(password_with_pad, ses->password, CIFS_ENCPWD_SIZE);
 
        if((ses->server->secMode & SECMODE_PW_ENCRYPT) == 0)
                if(extended_security & CIFSSEC_MAY_PLNTXT) {