io_u->flags & IO_U_F_FLIGHT failed errors when using libaio

[Lakshmi]

Hi Jens,
   I have a job file that looks like below and it keeps giving errors
like attached in screen shot. I am using fio-2.2.4

cmd="$FIO --name=test  --group_reporting=1 --ioengine=libaio
--invalidate=1 --iodepth=32 --bs=4K --filename=/dev/sde --rw=randread
--direct=1 --buffered=0 --time_based --runtime=300 --numjobs=64"

Any idea what is causing this?

Thanks
LD