linux-kernel - [PATCH 44/74] target: Release se_cmd when LUN lookup fails for TMR

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Date:	Thu, 24 Jan 2013 01:26:56 -0200
From:	Herton Ronaldo Krzesinski <herton.krzesinski@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Roland Dreier <roland@...estorage.com>,
	Nicholas Bellinger <nab@...ux-iscsi.org>,
	Herton Ronaldo Krzesinski <herton.krzesinski@...onical.com>
Subject: [PATCH 44/74] target: Release se_cmd when LUN lookup fails for TMR

3.5.7.4 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Roland Dreier <roland@...estorage.com>

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@...estorage.com>
Signed-off-by: Nicholas Bellinger <nab@...ux-iscsi.org>
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@...onical.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

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