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. -- Jens Axboe
