panic: trap type 6, code=10, pc=e9779
Starting stack trace...
panic(ffffffff82fb0cb1) at panic+0x1ba sys/kern/subr_prf.c:229
kerntrap(ffff8000327e6810) at kerntrap+0x28b sys/arch/amd64/amd64/trap.c:327
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
acpi_pdirpa() at acpi_pdirpa+0xd55ea
rt_match(ffff8000327e6be0,ffff8000327e6bfc,1,0) at rt_match+0xf0 rt_clone sys/net/route.c:383 [inline]
rt_match(ffff8000327e6be0,ffff8000327e6bfc,1,0) at rt_match+0xf0 sys/net/route.c:358
route_mpath(ffff8000327e6bc8,fffffd8061c4e1f0,fffffd8061c4e1ec,0) at route_mpath+0xb8 sys/net/route.c:255
in_ouraddr(fffffd8061c4e100,ffff8000015a7000,ffff8000327e6bc8,0) at in_ouraddr+0xc2
ip_input_if(ffff8000327e6cb8,ffff8000327e6cc4,ffff80002d5d4000,0,ffff8000015a7000) at ip_input_if+0x3dd sys/netinet/ip_input.c:508
ipv4_input(ffff8000015a7000,fffffd8061c4e100) at ipv4_input+0x50 sys/netinet/ip_input.c:337
ether_input(ffff8000015a7000,fffffd8061c4e100) at ether_input+0x6e4
tun_dev_write(5d01,ffff8000327e7038,ffff80002d5d4000,2) at tun_dev_write+0x301 sys/net/if_tun.c:914
spec_write(ffff8000327e6e90) at spec_write+0x117 sys/kern/spec_vnops.c:302
VOP_WRITE(fffffd8059c60c00,ffff8000327e7038,11,fffffd807f7d72d8) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245
vn_write(fffffd806c190978,ffff8000327e7038,0) at vn_write+0x1c3 sys/kern/vfs_vnops.c:408
dofilewritev(ffff80003764d468,c8,ffff8000327e7038,0,ffff8000327e70f0) at dofilewritev+0x23c sys/kern/sys_generic.c:380
sys_write(ffff80003764d468,ffff8000327e71a0,ffff8000327e70f0) at sys_write+0xa2 sys/kern/sys_generic.c:300
syscall(ffff8000327e71a0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x8ce22a43b20, count: 239
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 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 $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