On 9/1/23 9:13 AM, Jens Axboe wrote: > > On Fri, 01 Sep 2023 21:49:16 +0800, Ming Lei wrote: >> io_wq_put_and_exit() is called from do_exit(), but all FIXED_FILE requests >> in io_wq aren't canceled in io_uring_cancel_generic() called from do_exit(). >> Meantime io_wq IO code path may share resource with normal iopoll code >> path. >> >> So if any HIPRI request is submittd via io_wq, this request may not get resouce >> for moving on, given iopoll isn't possible in io_wq_put_and_exit(). >> >> [...] > > Applied, thanks! > > [1/1] io_uring: fix IO hang in io_wq_put_and_exit from do_exit() > commit: b484a40dc1f16edb58e5430105a021e1916e6f27 This causes a regression with the test/thread-exit.t test case, as it's canceling requests from other tasks as well. I will drop this patch for now. -- Jens Axboe
