Commit 19c5d84f authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Jens Axboe
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blk-mq: idle all hardware contexts before freeing a queue 



Without this we can leak the active_queues reference if a command is
freed while it is considered active.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarJens Axboe <axboe@fb.com>
parent c22d9d8a

block/blk-mq.c

+1 −0
Original line number Diff line number Diff line
@@ -1844,6 +1844,7 @@ void blk_mq_free_queue(struct request_queue *q) 
	blk_mq_del_queue_tag_set(q);



	queue_for_each_hw_ctx(q, hctx, i) {

		blk_mq_tag_idle(hctx);

		kfree(hctx->ctxs);

		blk_mq_unregister_cpu_notifier(&hctx->cpu_notifier);

		if (q->mq_ops->exit_hctx)