On 6/21/19 6:06 AM, Stephen Bates wrote: > Hi > >> I hit the following BUG when testing fio's t/io_uring test on a null >> block device > > I confirmed the same BUG occurs on 5.2-rc5. I also managed to hit a > similar bug if I use the io_uring engine in fio but only when the > hipri engine option is enabled. Can't seem to reproduce this, but from your description, seems to be specific to polled IO. Do you have any options set for null_blk? Can you send your kernel .config as well? -- Jens Axboe
