panic: trap type 6, code=10, pc=0
Starting stack trace...
panic(ffffffff82faea47) at panic+0x1ba sys/kern/subr_prf.c:229
kerntrap(ffff8000374c8a70) at kerntrap+0x28b sys/arch/amd64/amd64/trap.c:327
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
0(b,ffff8000374c8c38,3,ffff8000374c8cd8,0,b) at 0
rt_match(fffffd806e82b330,0,1,0) at rt_match+0xf0 rt_clone sys/net/route.c:383 [inline]
rt_match(fffffd806e82b330,0,1,0) at rt_match+0xf0 sys/net/route.c:358
route_mpath(fffffd806e82b318,fffffd8072291324,0,0) at route_mpath+0xb8 sys/net/route.c:255
in_pcbselsrc(ffff8000374c8e28,fffffd8072291320,fffffd806e82b2a0) at in_pcbselsrc+0x250
in_pcbconnect(fffffd806e82b2a0,fffffd8072291300) at in_pcbconnect+0x11a sys/netinet/in_pcb.c:522
udp_connect(fffffd8071e9e7e8,fffffd8072291300) at udp_connect+0xe3 sys/netinet/udp_usrreq.c:1170
sys_connect(ffff80003761cf50,ffff8000374c9020,ffff8000374c8f70) at sys_connect+0x344 sys/kern/uipc_syscalls.c:422
syscall(ffff8000374c9020) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xea8287bdaf0, count: 245
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 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