From: Steve French <smfrench@gmail.com>
Date: Sat, 26 Sep 2015 14:48:58 +0000 (-0500)
Subject: [SMB3] Missing null tcon check
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=ff9f84b7d79ddccab4c293c9d3e289f95ae594f7;p=linux-beck.git

[SMB3] Missing null tcon check

Pointed out by Dan Carpenter via smatch code analysis tool

CC: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Steve French <steve.french@primarydata.com>
---

diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index ce83e2edbe0a..597a417ba94d 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -922,7 +922,7 @@ SMB2_tcon(const unsigned int xid, struct cifs_ses *ses, const char *tree,
 	if (tcon && tcon->bad_network_name)
 		return -ENOENT;
 
-	if ((tcon->seal) &&
+	if ((tcon && tcon->seal) &&
 	    ((ses->server->capabilities & SMB2_GLOBAL_CAP_ENCRYPTION) == 0)) {
 		cifs_dbg(VFS, "encryption requested but no server support");
 		return -EOPNOTSUPP;