On Thu, 17 Aug 2023 22:17:51 +0800, Ming Lei wrote:

When blkg is removed from q->blkg_list from blkg_free_workfn(), queue_lock
has to be held, otherwise, all kinds of bugs(list corruption, hard lockup,
..) can be triggered from blkg_destroy_all().

Applied, thanks!

[1/1] blk-cgroup: hold queue_lock when removing blkg->q_node
      commit: 94254d59c0d22ecf9fdd1a18dd03652fc6be19e5

Best regards,
-- 
Jens Axboe