Re: [PATCH] blk-mq: fix tags UAF when shrink nr_hw_queues

[Jens Axboe]

On Fri, 08 Sep 2023 08:57:02 +0800, chengming.zhou@xxxxxxxxx wrote:
> When nr_hw_queues shrink, we free the excess tags before realloc
> hw_ctxs for each queue, during that we may need to access those
> tags, like blk_mq_tag_idle(hctx) will access queue shared tags.
> 
> So slab-use-after-free caused and reported by KASAN. Fix it by
> moving the releasing of excess tags to the end.
> 
> [...]

Applied, thanks!

[1/1] blk-mq: fix tags UAF when shrink nr_hw_queues
      (no commit info)

Best regards,
-- 
Jens Axboe