This is a note to let you know that I've just added the patch titled
block: kyber: fix domain token leak during requeue
to the 4.14-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:
block-kyber-fix-domain-token-leak-during-requeue.patch
and it can be found in the queue-4.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From ba989a01469d027861e55c8f1121edadef757797 Mon Sep 17 00:00:00 2001
From: Ming Lei <ming.lei@xxxxxxxxxx>
Date: Fri, 23 Feb 2018 23:36:57 +0800
Subject: block: kyber: fix domain token leak during requeue
From: Ming Lei <ming.lei@xxxxxxxxxx>
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@xxxxxxxxxx>
Cc: Omar Sandoval <osandov@xxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Reviewed-by: Bart Van Assche <bart.vanassche@xxxxxxx>
Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxx>
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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,
Patches currently in stable-queue which might be from ming.lei@xxxxxxxxxx are
queue-4.14/block-kyber-fix-domain-token-leak-during-requeue.patch