On Mon, 13 Dec 2021 21:55:27 +0900, Tetsuo Handa wrote:
> syzbot is reporting circular locking problem at __loop_clr_fd() [1], for
> commit 87579e9b7d8dc36e ("loop: use worker per cgroup instead of kworker")
> is calling destroy_workqueue() with disk->open_mutex held.
>
> This circular dependency cannot be broken unless we call __loop_clr_fd()
> without holding disk->open_mutex. Therefore, defer __loop_clr_fd() from
> lo_release() to a WQ context.
>
> [...]
Applied, thanks!
[1/1] loop: make autoclear operation asynchronous
commit: 322c4293ecc58110227b49d7e47ae37b9b03566f
Best regards,
--
Jens Axboe
