Steve French 43d2e0fbc6 cifs: fix incorrect check for null pointer in header_assemble
commit 9ed38fd4a15417cac83967360cf20b853bfab9b6 upstream.

Although very unlikely that the tlink pointer would be null in this case,
get_next_mid function can in theory return null (but not an error)
so need to check for null (not for IS_ERR, which can not be returned
here).

Address warning:

        fs/smbfs_client/connect.c:2392 cifs_match_super()
        warn: 'tlink' isn't an ERR_PTR

Pointed out by Dan Carpenter via smatch code analysis tool

CC: stable@vger.kernel.org
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-10-06 15:31:10 +02:00
..
2020-10-29 09:54:59 +01:00
2016-10-13 19:48:11 -05:00
2020-11-05 11:08:44 +01:00
2018-06-01 09:14:30 -05:00
2021-03-24 11:07:39 +01:00
2019-10-05 13:10:12 +02:00