This is a note to let you know that I've just added the patch titled
blk-mq: Avoid that request queue removal can trigger list corruption
to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: blk-mq-avoid-that-request-queue-removal-can-trigger-list-corruption.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@vger.kernel.org know about it.
From foo@baz Tue Dec 12 10:32:42 CET 2017
From: Bart Van Assche bart.vanassche@wdc.com Date: Wed, 8 Nov 2017 10:23:45 -0800 Subject: blk-mq: Avoid that request queue removal can trigger list corruption
From: Bart Van Assche bart.vanassche@wdc.com
[ Upstream commit aba7afc5671c23beade64d10caf86e24a9105dab ]
Avoid that removal of a request queue sporadically triggers the following warning:
list_del corruption. next->prev should be ffff8807d649b970, but was 6b6b6b6b6b6b6b6b WARNING: CPU: 3 PID: 342 at lib/list_debug.c:56 __list_del_entry_valid+0x92/0xa0 Call Trace: process_one_work+0x11b/0x660 worker_thread+0x3d/0x3b0 kthread+0x129/0x140 ret_from_fork+0x27/0x40
Signed-off-by: Bart Van Assche bart.vanassche@wdc.com Cc: Christoph Hellwig hch@lst.de Cc: Hannes Reinecke hare@suse.com Cc: Johannes Thumshirn jthumshirn@suse.de Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Sasha Levin alexander.levin@verizon.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- block/blk-core.c | 1 + 1 file changed, 1 insertion(+)
--- a/block/blk-core.c +++ b/block/blk-core.c @@ -339,6 +339,7 @@ void blk_sync_queue(struct request_queue struct blk_mq_hw_ctx *hctx; int i;
+ cancel_delayed_work_sync(&q->requeue_work); queue_for_each_hw_ctx(q, hctx, i) cancel_delayed_work_sync(&hctx->run_work); } else {
Patches currently in stable-queue which might be from bart.vanassche@wdc.com are
queue-4.14/blk-mq-avoid-that-request-queue-removal-can-trigger-list-corruption.patch