panic: trap type 6, code=10, pc=3c729
Starting stack trace...
panic(ffffffff82852b9b) at panic+0x16f sys/kern/subr_prf.c:229
kerntrap(ffff8000371a57d0) 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(ffff8000371a5aa8,ffff8000371a5ba0,0) at rt_clone+0x7d sys/net/route.c:383
route_mpath(ffff8000371a5b88,fffffd806f955770,fffffd806f95576c,0) at route_mpath+0x112 rt_match sys/net/route.c:360 [inline]
route_mpath(ffff8000371a5b88,fffffd806f955770,fffffd806f95576c,0) at route_mpath+0x112 rtalloc_mpath sys/net/route.c:476 [inline]
route_mpath(ffff8000371a5b88,fffffd806f955770,fffffd806f95576c,0) at route_mpath+0x112 sys/net/route.c:255
in_ouraddr(fffffd806e31d200,ffff800000e13000,ffff8000371a5b88) at in_ouraddr+0x98 sys/netinet/ip_input.c:830
ip_input_if(ffff8000371a5c78,ffff8000371a5c84,ffff80002eadd000,0,ffff800000e13000) at ip_input_if+0x28e sys/netinet/ip_input.c:486
ipv4_input(ffff800000e13000,fffffd806e31d200) at ipv4_input+0x47 sys/netinet/ip_input.c:327
ether_input(ffff800000e13000,fffffd806e31d200) at ether_input+0x525
tun_dev_write(5d04,ffff8000371a5ff8,ffff80002eadd000,2) at tun_dev_write+0x209 sys/net/if_tun.c:914
spec_write(ffff8000371a5e50) at spec_write+0xe1 sys/kern/spec_vnops.c:302
VOP_WRITE(fffffd8070f1da78,ffff8000371a5ff8,11,fffffd807f7d7888) at VOP_WRITE+0xc3 sys/kern/vfs_vops.c:245
vn_write(fffffd80695bcc00,ffff8000371a5ff8,0) at vn_write+0x15c sys/kern/vfs_vnops.c:408
dofilewritev(ffff8000ffff7c50,c8,ffff8000371a5ff8,0,ffff8000371a60b0) at dofilewritev+0x1a9 sys/kern/sys_generic.c:375
sys_write(ffff8000ffff7c50,ffff8000371a6160,ffff8000371a60b0) at sys_write+0x87 sys/kern/sys_generic.c:295
syscall(ffff8000371a6160) at syscall+0x8cf mi_syscall sys/sys/syscall_mi.h:180 [inline]
syscall(ffff8000371a6160) at syscall+0x8cf sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x95b2bdfc390, 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 f8e08a03-81bc-3227-53c0-939594373760
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