panic: trap type 6, code=10, pc=3c729
Starting stack trace...
panic(ffffffff82826cc7) at panic+0x159 sys/kern/subr_prf.c:229
kerntrap(ffff8000377df1a0) at kerntrap+0x1c7 sys/arch/amd64/amd64/trap.c:327
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
acpi_pdirpa() at acpi_pdirpa+0x2859a
rt_match(ffff800000e6f288,0,1,0) at rt_match+0xc3 rt_clone sys/net/route.c:383 [inline]
rt_match(ffff800000e6f288,0,1,0) at rt_match+0xc3 sys/net/route.c:358
ifa_ifwithroute(fe101c33,ffff800000e6f260,ffff800000e6f288,0) at ifa_ifwithroute+0x10b sys/net/rtsock.c:1245
rtm_getifa(ffff8000377df5c8,0) at rtm_getifa+0x1ec
rtm_output(ffff800000e6f200,ffff8000377df670,ffff8000377df5c8,0,0) at rtm_output+0x586 sys/net/rtsock.c:955
route_output(fffffd805ea43000,fffffd8079b48a08) at route_output+0x6bb sys/net/rtsock.c:864
route_send(fffffd8079b48a08,fffffd805ea43000,0,0) at route_send+0x8f sys/net/rtsock.c:340
sosend(fffffd8079b48a08,0,ffff8000377df828,0,0,0) at sosend+0x663
sendit(ffff800032989750,7,ffff8000377df920,0,ffff8000377df9d0) at sendit+0x54c sys/kern/uipc_syscalls.c:786
sys_sendto(ffff800032989750,ffff8000377dfa80,ffff8000377df9d0) at sys_sendto+0x84 sys/kern/uipc_syscalls.c:564
syscall(ffff8000377dfa80) at syscall+0x72a sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x9c47a6f1fd0, count: 242
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 1f64d870-06f2-d8bf-7327-adc6877a2997
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