On 6/17/21 4:39 PM, Ming Lei wrote: > On Thu, Jun 17, 2021 at 10:56:53AM -0600, Jens Axboe wrote: >> On 6/17/21 10:48 AM, Jens Axboe wrote: >>> On 6/17/21 5:17 AM, Ming Lei wrote: >>>> Hello, >>>> >>>> fio hangs when running the test[1], and doesn't observe this issue >>>> when running a >>>> such single job test. >>>> >>>> v5.12 is good, both v5.13-rc3 and the latest v5.13-rc6 are bad. >>>> >>>> >>>> [1] fio test script and log >>>> + fio --bs=4k --ioengine=io_uring --fixedbufs --registerfiles --hipri >>>> --iodepth=64 --iodepth_batch_submit=16 >>>> --iodepth_batch_complete_min=16 --filename=/dev/nvme0n1 --direct=1 >>>> --runtime=20 --numjobs=4 --rw=randread >>>> --name=test --group_reporting >>>> >>>> test: (g=0): rw=randread, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) >>>> 4096B-4096B, ioengine=io_uring, iodepth=64 >>>> ... >>>> fio-3.25 >>>> Starting 4 processes >>>> fio: filehash.c:64: __lookup_file_hash: Assertion `f->fd != -1' failed. >>>> fio: pid=1122, got signal=6 >>>> ^Cbs: 3 (f=0): [f(1),r(1),K(1),r(1)][63.6%][eta 00m:20s] >>> >>> Funky, would it be possible to bisect this? I'll see if I can reproduce. >> >> Actually, this looks like a fio bug, that assert is a bit too trigger >> happy. Current -git should work, please test and see if things work. >> I believe it's just kernel timing that causes this, not a kernel issue. > > Yeah, current -git does work, thanks the fix! Thanks for checking! -- Jens Axboe
