blk-mq: Avoid that request queue removal can trigger list corruption
[ Upstream commit aba7afc567
]
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>
pull/10/head
parent
bd099ef951
commit
a4000d951e
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@ -339,6 +339,7 @@ void blk_sync_queue(struct request_queue *q)
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struct blk_mq_hw_ctx *hctx;
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int i;
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cancel_delayed_work_sync(&q->requeue_work);
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queue_for_each_hw_ctx(q, hctx, i)
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cancel_delayed_work_sync(&hctx->run_work);
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} else {
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