SMB3: Warn user if trying to sign connection that authenticated as guest

It can be confusing if user ends up authenticated as guest but they requested signing (server will return error validating signed packets) so add log message for this. Signed-off-by: Steve French <[email protected]> Reviewed-by: Ronnie Sahlberg <[email protected]> CC: Stable <[email protected]>
thoughtpolice · Sep 20, 2017 · c721c38 · c721c38
1 parent 590d08d
commit c721c38
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
@@ -1176,6 +1176,8 @@ SMB2_sess_setup(const unsigned int xid, struct cifs_ses *ses,
 	while (sess_data->func)
 		sess_data->func(sess_data);
 
+	if ((ses->session_flags & SMB2_SESSION_FLAG_IS_GUEST) && (ses->sign))
+		cifs_dbg(VFS, "signing requested but authenticated as guest\n");
 	rc = sess_data->result;
 out:
 	kfree(sess_data);