This is a note to let you know that I've just added the patch titled
[SCSI] scsi_dh_alua: fix deadlock in stpg_endio
to the 2.6.38-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:
scsi_dh_alua-fix-deadlock-in-stpg_endio.patch
and it can be found in the queue-2.6.38 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From ed0f36bc5719b25659b637f80ceea85494b84502 Mon Sep 17 00:00:00 2001
From: Joseph Gruher <[email protected]>
Date: Wed, 5 Jan 2011 16:00:21 -0500
Subject: [SCSI] scsi_dh_alua: fix deadlock in stpg_endio
From: Joseph Gruher <[email protected]>
commit ed0f36bc5719b25659b637f80ceea85494b84502 upstream.
The use of blk_execute_rq_nowait() implies __blk_put_request() is needed
in stpg_endio() rather than blk_put_request() -- blk_finish_request() is
called with queue lock already held.
Signed-off-by: Joseph Gruher <[email protected]>
Signed-off-by: Ilgu Hong <[email protected]>
Signed-off-by: Mike Snitzer <[email protected]>
Signed-off-by: James Bottomley <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/scsi/device_handler/scsi_dh_alua.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/scsi/device_handler/scsi_dh_alua.c
+++ b/drivers/scsi/device_handler/scsi_dh_alua.c
@@ -285,7 +285,8 @@ static void stpg_endio(struct request *r
print_alua_state(h->state));
}
done:
- blk_put_request(req);
+ req->end_io_data = NULL;
+ __blk_put_request(req->q, req);
if (h->callback_fn) {
h->callback_fn(h->callback_data, err);
h->callback_fn = h->callback_data = NULL;
Patches currently in stable-queue which might be from [email protected]
are
queue-2.6.38/scsi_dh_alua-fix-deadlock-in-stpg_endio.patch
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