On 4/23/21 2:01 PM, Bart Van Assche wrote:
> hctx->tags->rqs[] must be cleared before releasing a request tag because
> otherwise clearing that pointer races with the following assignment in
> blk_mq_get_driver_tag():
>
> rcu_assign_pointer(hctx->tags->rqs[rq->tag], rq);
Looks good to me. Applied, and added:
Fixes: 5ba3f5a6ca7e ("blk-mq: Fix races between iterating over requests and freeing requests")
which was missing.
--
Jens Axboe
