On Thu, 19 Dec 2024 19:52:58 +0000, Pavel Begunkov wrote:
> task works can be executed after the task has gone through io_uring
> termination, whether it's the final task_work run or the fallback path.
> In this case, task work will fined ->io_wq being already killed and
> null'ed, which is a problem if it then tries to forward the request to
> io_queue_iowq(). Make io_queue_iowq() to fail requests in this case.
>
> Note that it also checks PF_KTHREAD, because the user can first close
> a DEFER_TASKRUN ring and shortly after kill the task, in which case
> ->iowq check would race.
>
> [...]
Applied, thanks!
[1/1] io_uring: check if iowq is kileed before queuing
commit: dbd2ca9367eb19bc5e269b8c58b0b1514ada9156
Best regards,
--
Jens Axboe
