panic: trap type 6, code=10, pc=0
Starting stack trace...
panic(ffffffff8330b0d5) at panic+0x1ba sys/kern/subr_prf.c:229
kerntrap(ffff80002e18a800) at kerntrap+0x28b sys/arch/amd64/amd64/trap.c:327
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
0(ffffffff837df690,fffffd806682df00,fa9d965e71b1a87c,0,fffffd806682df00,2b4) at 0
softclock_process_kclock_timeout(fffffd806682df00,0) at softclock_process_kclock_timeout+0x2a7 sys/kern/kern_timeout.c:725
softclock(0) at softclock+0x199 sys/kern/kern_timeout.c:778
softintr_dispatch(0) at softintr_dispatch+0xfe sys/kern/kern_softintr.c:87
dosoftint(0) at dosoftint+0x48 sys/arch/amd64/amd64/intr.c:840
Xsoftclock() at Xsoftclock+0x27
x86_bus_space_io_read_4(b008,0) at x86_bus_space_io_read_4+0x37 sys/arch/amd64/amd64/bus_space.c:666
acpitimer_delay(3e8) at acpitimer_delay+0x192 acpitimer_read sys/dev/acpi/acpitimer.c:142 [inline]
acpitimer_delay(3e8) at acpitimer_delay+0x192 sys/dev/acpi/acpitimer.c:125
pckbc_poll_cmd1(ffff800000306c00,0,ffff80002e18ac40) at pckbc_poll_cmd1+0x341 pckbc_poll_data1 sys/dev/ic/pckbc.c:148 [inline]
pckbc_poll_cmd1(ffff800000306c00,0,ffff80002e18ac40) at pckbc_poll_cmd1+0x341 sys/dev/ic/pckbc.c:620
pckbc_poll_cmd(ffff800000306c00,0,ffff80002e18acff,1,0,0,3223938c0ea76ca3) at pckbc_poll_cmd+0x12a sys/dev/ic/pckbc.c:692
pckbd_enable(ffff80000006a600,1) at pckbd_enable+0x107 sys/dev/pckbc/pckbd.c:502
wskbd_do_open(ffff800000b08a00,ffff800000b08a50) at wskbd_do_open+0xf5 wskbd_enable sys/dev/wscons/wskbd.c:814 [inline]
wskbd_do_open(ffff800000b08a00,ffff800000b08a50) at wskbd_do_open+0xf5 sys/dev/wscons/wskbd.c:890
wskbdopen(4300,10001,2000,ffff80003a536540) at wskbdopen+0x1d2 sys/dev/wscons/wskbd.c:872
spec_open(ffff80002e18ae48) at spec_open+0x2e9 sys/kern/spec_vnops.c:150
VOP_OPEN(fffffd80760c8440,10001,fffffd8007bfb270,ffff80003a536540) at VOP_OPEN+0x82 sys/kern/vfs_vops.c:138
vn_open(ffff80002e18b098,10001,0) at vn_open+0x708 sys/kern/vfs_vnops.c:177
doopenat(ffff80003a536540,ffffff9c,200000000000,10000,0,ffff80002e18b240) at doopenat+0x31d sys/kern/vfs_syscalls.c:1137
syscall(ffff80002e18b2f0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80002e18b2f0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x71e441d39e0, count: 235
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 0fee9609-1d66-d0cb-3385-b9d53e0469ef
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 0x000f2820: 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 $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