------------[ cut here ]------------
WARNING: CPU: 1 PID: 68 at fs/direct-io.c:293 dio_complete+0x641/0x7e0 fs/direct-io.c:293
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 68 Comm: kworker/1:1 Not tainted 4.14.105+ #28
Workqueue: dio/sda1 dio_aio_complete_work
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0xb9/0x10e lib/dump_stack.c:53
 panic+0x1d9/0x3c2 kernel/panic.c:182
 __warn.cold+0x2f/0x3b kernel/panic.c:546
Kernel Offset: 0x4200000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
Rebooting in 86400 seconds..