On Tue, 27 Sep 2022 08:56:52 -0700, Keith Busch wrote:
> From: Keith Busch <kbusch@xxxxxxxxxx>
>
> The hctx's run_work may be racing with the elevator switch when
> reinitializing hardware queues. The queue is merely frozen in this
> context, but that only prevents requests from allocating and doesn't
> stop the hctx work from running. The work may get an elevator pointer
> that's being torn down, and can result in use-after-free errors and
> kernel panics (example below). Use the quiesced elevator switch instead,
> and make the previous one static since it is now only used locally.
>
> [...]
Applied, thanks!
[1/1] blk-mq: use quiesced elevator switch when reinitializing queues
commit: 8237c01f1696bc53c470493bf1fe092a107648a6
Best regards,
--
Jens Axboe
