scsi: qla4xxx: fix a potential NULL pointer dereference
authorKangjie Lu <kjlu@umn.edu>
Thu, 14 Mar 2019 06:30:59 +0000 (01:30 -0500)
committerMartin K. Petersen <martin.petersen@oracle.com>
Tue, 26 Mar 2019 02:24:30 +0000 (22:24 -0400)
In case iscsi_lookup_endpoint fails, the fix returns -EINVAL to avoid NULL
pointer dereference.

Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Acked-by: Manish Rangankar <mrangankar@marvell.com>
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
drivers/scsi/qla4xxx/ql4_os.c

index 16a18d5d856f91725b33e25df042eb21bba8c20a..6e4f4931ae175f806731d2fcb1fbb4ba655cc885 100644 (file)
@@ -3203,6 +3203,8 @@ static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
        if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
                return -EINVAL;
        ep = iscsi_lookup_endpoint(transport_fd);
+       if (!ep)
+               return -EINVAL;
        conn = cls_conn->dd_data;
        qla_conn = conn->dd_data;
        qla_conn->qla_ep = ep->dd_data;