panic: trap type 6, code=10, pc=0
Starting stack trace...
panic(ffffffff82839803) at panic+0x159 sys/kern/subr_prf.c:229
kerntrap(ffff80002a6a71a0) at kerntrap+0x1c7 sys/arch/amd64/amd64/trap.c:327
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
0(b,ffff80002a6a7370,83,ffff80002a6a7418,0,b) at 0
rt_match(fffffd8067e207d8,0,1,0) at rt_match+0xcd rt_clone sys/net/route.c:338 [inline]
rt_match(fffffd8067e207d8,0,1,0) at rt_match+0xcd sys/net/route.c:313
in_pcbselsrc(fffffd807f02a9f8,ffff80002a6a7568,fffffd8067e20748) at in_pcbselsrc+0x1d9 sys/netinet/in_pcb.c:986
rip_output(fffffd807f02a900,fffffd806bac35f8,ffff80002a6a7568,2f4) at rip_output+0x217 sys/netinet/raw_ip.c:306
rip_send(fffffd806bac35f8,fffffd807f02a900,0,0) at rip_send+0xe3 sys/netinet/raw_ip.c:650
sosend(fffffd806bac35f8,0,ffff80002a6a77f0,0,0,0) at sosend+0x66d
dofilewritev(ffff80002a65c020,3,ffff80002a6a77f0,0,ffff80002a6a78b0) at dofilewritev+0x1a0 sys/kern/sys_generic.c:375
sys_writev(ffff80002a65c020,ffff80002a6a7960,ffff80002a6a78b0) at sys_writev+0xab sys/kern/sys_generic.c:322
syscall(ffff80002a6a7960) at syscall+0x751 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xc6798b403c0, 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 6a63e308-43db-2955-5bd8-f45d251cdfc1
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 0x000f28a0: 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 3.65
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