[ 3.5.y.z extended stable ] Patch "target: Release se_cmd when LUN lookup fails for TMR" has been added to staging queue

[Herton Ronaldo Krzesinski]

This is a note to let you know that I have just added a patch titled

    target: Release se_cmd when LUN lookup fails for TMR

to the linux-3.5.y-queue branch of the 3.5.y.z extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.5.y-queue

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.5.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Herton

------

>From 03027f72cf19f4d510459e3bbf1b18eae61d32a5 Mon Sep 17 00:00:00 2001
From: Roland Dreier <roland at purestorage.com>
Date: Wed, 2 Jan 2013 12:47:59 -0800
Subject: [PATCH] target: Release se_cmd when LUN lookup fails for TMR

commit 5a3b6fc0092c5f8dee7820064ee54d2631d48573 upstream.

When transport_lookup_tmr_lun() fails and we return a task management
response from target_complete_tmr_failure(), we need to call
transport_cmd_check_stop_to_fabric() to release the last ref to the
cmd after calling se_tfo->queue_tm_rsp(), or else we will never remove
the failed TMR from the session command list (and we'll end up waiting
forever when trying to tear down the session).

(nab: Fix minor compile breakage)

Signed-off-by: Roland Dreier <roland at purestorage.com>
Signed-off-by: Nicholas Bellinger <nab at linux-iscsi.org>
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski at canonical.com>
---
 drivers/target/target_core_transport.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index d6c73e8..047f49a 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -1614,6 +1614,8 @@ static void target_complete_tmr_failure(struct work_struct *work)

 	se_cmd->se_tmr_req->response = TMR_LUN_DOES_NOT_EXIST;
 	se_cmd->se_tfo->queue_tm_rsp(se_cmd);
+
+	transport_cmd_check_stop_to_fabric(se_cmd);
 }

 /**
--
1.7.9.5