On 2014-07-22 22:59, scameron@beardog.cce.hp.com wrote:
>
> Hi Jens,
>
> I'm running into a crash with fio today, seems to be easily reproducible.
>
> [root@msablackburn saperf]# fio --version
> fio-2.1.11-2-g90811
>
> (top of current git tree.)
>
>
> [root@msablackburn saperf]# fio ./2drive_sdr_verify.fio
> 4_KiB_RR_drive_r: (g=0): rw=randwrite, bs=4K-4K/4K-4K/4K-4K, ioengine=libaio, iodepth=170
> 4_KiB_RR_drive_s: (g=0): rw=randwrite, bs=4K-4K/4K-4K/4K-4K, ioengine=libaio, iodepth=170
> fio-2.1.11-2-g90811
> Starting 2 threads
> fio: io_u.c:1315: __get_io_u: Assertion `io_u->flags & IO_U_F_FREE' failed.a 58m:59s]
> Aborted (core dumped)

Looks like there's a long standing race in the async verification. Does 
this patch fix it for you?

-- 
Jens Axboe