panic: trap type 6, code=0, pc=ffffffff82dd3b08
Starting stack trace...
panic(ffffffff8347bfe2) at panic+0x1d0 sys/kern/subr_prf.c:229
kerntrap(ffff80002a2abde0) at kerntrap+0x30b
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
dovutimens(ffff8000fffee018,fffffd8070c4c540,ffff80002a2abfa0) at 
dovutimens+0x368
sys_futimens(ffff8000fffee018,ffff80002a2ac0f0,ffff80002a2ac040) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2847
syscall(ffff80002a2ac0f0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a2ac0f0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x92dd9a36490, count: 250
End of stack trace.

dump to dev 4,1 not possible
rebooting...
SeaBIOS (version 1.8.2-google)
Total RAM Size = 0x0000000080000000 = 2048 MiB
CPUs found: 2     Max CPUs supported: 2
SeaBIOS (version 1.8.2-google)
Machine UUID dc1537e2-3f8b-09d0-7a97-ada6c38139e5
found virtio-scsi at 0:3
virtio-scsi vendor='Google' product='PersistentDisk' rev='1' type=0 removable=0
virtio-scsi blksize=512 sectors=4194304 = 2048 MiB
drive 0x000f26c0: PCHS=0/0/0 translation=lba LCHS=520/128/63 s=4194304
Sending Seabios boot VM event.
Booting from Hard Disk 0...
>> OpenBSD/amd64 BOOT 3.67
boot> set $lines = 0
set: syntax error
boot> set $maxwidth = 0
set: syntax error
boot> show panic
boot: illegal argument panic
boot> trace
boot>