panic: trap type 6, code=10, pc=e9779
Starting stack trace...
panic(ffffffff82fde0d1) at panic+0x1d0 sys/kern/subr_prf.c:229
kerntrap(ffff8000371e4230) at kerntrap+0x29b sys/arch/amd64/amd64/trap.c:327
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
acpi_pdirpa() at acpi_pdirpa+0xd55ea
rt_clone(ffff8000371e4508,fffffd8064aaec60,0) at rt_clone+0x98 sys/net/route.c:383
route_mpath(fffffd8064aaec48,fffffd806cc7a124,0,0) at route_mpath+0x170 rt_match sys/net/route.c:360 [inline]
route_mpath(fffffd8064aaec48,fffffd806cc7a124,0,0) at route_mpath+0x170 rtalloc_mpath sys/net/route.c:476 [inline]
route_mpath(fffffd8064aaec48,fffffd806cc7a124,0,0) at route_mpath+0x170 sys/net/route.c:255
in_pcbselsrc(ffff8000371e4628,fffffd806cc7a120,fffffd8064aaebd0) at in_pcbselsrc+0x250
udp_output(fffffd8064aaebd0,fffffd807d8f0200,fffffd806cc7a100,0) at udp_output+0x789 sys/netinet/udp_usrreq.c:1017
sosend(ffff800001406fc0,fffffd806cc7a100,ffff8000371e4788,0,0,2) at sosend+0xa40
sendit(ffff8000371fb6f0,3,ffff8000371e4900,2,ffff8000371e49c0) at sendit+0x721 sys/kern/uipc_syscalls.c:786
sys_sendmsg(ffff8000371fb6f0,ffff8000371e4a70,ffff8000371e49c0) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:604
syscall(ffff8000371e4a70) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff8000371e4a70) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xe52701eb3f0, count: 244
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 43b93b83-f320-801a-a1ee-23eab263a335
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 0x000f27c0: 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