panic: trap type 6, code=10, pc=0
Starting stack trace...
panic(ffffffff833a0d67) at panic+0x1ba sys/kern/subr_prf.c:229
kerntrap(ffff80002a732f50) at kerntrap+0x2fb
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
0(ffffffff83805cf0,fffffd806d06cf08,b2e3a6083c03dfc6,
0,fffffd806d06cf08,2aa) at 0
softclock_process_kclock_timeout(fffffd806d06cf08,0) at softclock_process_kclock_timeout+0x2a5 sys/kern/kern_timeout.c:729
softclock(0) at softclock+0x179 sys/kern/kern_timeout.c:782
softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87
dosoftint(0) at dosoftint+0x48 sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
acpicpu_idle() at acpicpu_idle+0x42e sys/dev/acpi/acpicpu_x86.c:1224
sched_idle(ffffffff8379eff0) at sched_idle+0x361 sys/kern/kern_sched.c:191
end trace frame: 0x0, count: 246
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 860ebdd0-427f-2be6-5726-fd56b385017a
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 0x000f26e0: 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> show registers
boot> show proc
boot> ps
boot> show all locks
boot> show malloc
boot> show all pools
boot> machine ddbcpu 0
machine: syntax error
boot> trace
boot> machine ddbcpu 1
machine: syntax error
boot> trace