Patch "iscsi-target: Fix panic when adding second TCP connection to iSCSI session" has been added to the 4.4-stable tree

Patch "iscsi-target: Fix panic when adding second TCP connection to iSCSI session" has been added to the 4.4-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    iscsi-target: Fix panic when adding second TCP connection to iSCSI session

to the 4.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     iscsi-target-fix-panic-when-adding-second-tcp-connection-to-iscsi-session.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 8abc718de6e9e52d8a6bfdb735060554aeae25e4 Mon Sep 17 00:00:00 2001
From: Feng Li <lifeng1519@gmail.com>
Date: Tue, 12 Jul 2016 06:15:44 +0800
Subject: iscsi-target: Fix panic when adding second TCP connection to iSCSI session

From: Feng Li <lifeng1519@gmail.com>

commit 8abc718de6e9e52d8a6bfdb735060554aeae25e4 upstream.

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.

Signed-off-by: Feng Li <lifeng1519@gmail.com>
Tested-by: Sumit Rai <sumit.rai@calsoftinc.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/target/iscsi/iscsi_target_login.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

--- a/drivers/target/iscsi/iscsi_target_login.c
+++ b/drivers/target/iscsi/iscsi_target_login.c
@@ -1357,8 +1357,9 @@ static int __iscsi_target_login_thread(s
 	}
 	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) {


Patches currently in stable-queue which might be from lifeng1519@gmail.com are

queue-4.4/iscsi-target-fix-panic-when-adding-second-tcp-connection-to-iscsi-session.patch