On 6/9/21 12:30 AM, Ming Lei wrote:
> tagset can't be used after blk_cleanup_queue() is returned because
> freeing tagset usually follows blk_clenup_queue(). Commit d97e594c5166
> ("blk-mq: Use request queue-wide tags for tagset-wide sbitmap") adds
> check on q->tag_set->flags in blk_mq_exit_sched(), and causes
> use-after-free.
>
> Fixes it by using hctx->flags.
Applied, thanks.
--
Jens Axboe
