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. -- Jens Axboe