panic: trap type 6, code=10, pc=3c729
Starting stack trace...
panic(ffffffff82850168) at panic+0x16f sys/kern/subr_prf.c:229
kerntrap(ffff80002a227a00) at kerntrap+0x1d7 sys/arch/amd64/amd64/trap.c:327
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
acpi_pdirpa() at acpi_pdirpa+0x2859a
rt_clone(ffff80002a227cd8,fffffd8076f28230,0) at rt_clone+0x7d sys/net/route.c:383
route_mpath(fffffd8076f28218,fffffd8068c43a24,0,0) at route_mpath+0x112 rt_match sys/net/route.c:360 [inline]
route_mpath(fffffd8076f28218,fffffd8068c43a24,0,0) at route_mpath+0x112 rtalloc_mpath sys/net/route.c:476 [inline]
route_mpath(fffffd8076f28218,fffffd8068c43a24,0,0) at route_mpath+0x112 sys/net/route.c:255
in_pcbselsrc(ffff80002a227dc8,fffffd8068c43a20,fffffd8076f281a0) at in_pcbselsrc+0x1b7 sys/netinet/in_pcb.c:975
in_pcbconnect(fffffd8076f281a0,fffffd8068c43a00) at in_pcbconnect+0xe8 sys/netinet/in_pcb.c:523
udp_connect(ffff800010fdf758,fffffd8068c43a00) at udp_connect+0xa4 sys/netinet/udp_usrreq.c:1196
sys_connect(ffff80002e4bc800,ffff80002a227fc0,ffff80002a227f10) at sys_connect+0x239 sys/kern/uipc_syscalls.c:422
syscall(ffff80002a227fc0) at syscall+0x8cf mi_syscall sys/sys/syscall_mi.h:180 [inline]
syscall(ffff80002a227fc0) at syscall+0x8cf sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x8c79bbe5d90, 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 2c48b237-609e-0a7d-d6ca-08d70f46a694
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 0x000f27f0: 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 $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