FAILED: patch "[PATCH] iscsi-target: Fix panic when adding second TCP connection to" failed to apply to 3.14-stable tree

The patch below does not apply to the 3.14-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From: Feng Li <[email protected]>
Date: Tue, 12 Jul 2016 06:15:44 +0800
Subject: [PATCH] iscsi-target: Fix panic when adding second TCP connection to
iSCSI session

In MC/S scenario, the conn->sess has been set NULL in iscsi_login_non_zero_tsih_s1 when the second connection comes here, then kernel panic.

The conn->sess will be assigned in iscsi_login_non_zero_tsih_s2. So we should check whether it's NULL before calling.

index b5212f0f9571..adf419fa4291 100644
@@ -1371,8 +1371,9 @@ static int __iscsi_target_login_thread(struct iscsi_np *np)
 	}
 	login->zero_tsih = zero_tsih;
 
-	conn->sess->se_sess->sup_prot_ops =
-		conn->conn_transport->iscsit_get_sup_prot_ops(conn);
+	if (conn->sess)
+		conn->sess->se_sess->sup_prot_ops =
+			conn->conn_transport->iscsit_get_sup_prot_ops(conn);
 
 	tpg = conn->tpg;
 	if (!tpg) {