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Date: Wed, 7 Mar 2018 11:38:09 -0800
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Paolo Valente <paolo.valente@...aro.org>,
Omar Sandoval <osandov@...com>,
Bart Van Assche <bart.vanassche@....com>,
Ming Lei <ming.lei@...hat.com>, Jens Axboe <axboe@...nel.dk>
Subject: [PATCH 4.14 026/110] block: kyber: fix domain token leak during requeue
4.14-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ming Lei <ming.lei@...hat.com>
commit ba989a01469d027861e55c8f1121edadef757797 upstream.
When requeuing request, the domain token should have been freed
before re-inserting the request to io scheduler. Otherwise, the
assigned domain token will be leaked, and IO hang can be caused.
Cc: Paolo Valente <paolo.valente@...aro.org>
Cc: Omar Sandoval <osandov@...com>
Cc: stable@...r.kernel.org
Reviewed-by: Bart Van Assche <bart.vanassche@....com>
Signed-off-by: Ming Lei <ming.lei@...hat.com>
Signed-off-by: Jens Axboe <axboe@...nel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
block/kyber-iosched.c | 1 +
1 file changed, 1 insertion(+)
--- a/block/kyber-iosched.c
+++ b/block/kyber-iosched.c
@@ -814,6 +814,7 @@ static struct elevator_type kyber_sched
.limit_depth = kyber_limit_depth,
.prepare_request = kyber_prepare_request,
.finish_request = kyber_finish_request,
+ .requeue_request = kyber_finish_request,
.completed_request = kyber_completed_request,
.dispatch_request = kyber_dispatch_request,
.has_work = kyber_has_work,
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