panic: trap type 6, code=10, pc=3c729
Starting stack trace...
panic(ffffffff828519d0) at panic+0x16f sys/kern/subr_prf.c:229
kerntrap(ffff80002c6bada0) 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(ffff80002c6bb078,ffff80002c6bb0f0,0) at rt_clone+0x7d sys/net/route.c:383
rtalloc(ffff80002c6bb0f0,1,0) at rtalloc+0x89 rt_match sys/net/route.c:360 [inline]
rtalloc(ffff80002c6bb0f0,1,0) at rtalloc+0x89 sys/net/route.c:489
icmp_reflect(fffffd806f093300,0,0) at icmp_reflect+0x1ca sys/netinet/ip_icmp.c:740
icmp_error(fffffd8070240100,3,3,0,0) at icmp_error+0x61 sys/netinet/ip_icmp.c:300
pf_test_rule(ffff80002c6bb388,ffff80002c6bb480,ffff80002c6bb488,ffff80002c6bb470,ffff80002c6bb460,2) at pf_test_rule+0x924
pf_test(2,1,ffff800000deb000,ffff80002c6bb5f8) at pf_test+0x194f sys/net/pf.c:7680
ip_input_if(ffff80002c6bb5f8,ffff80002c6bb604,ffff800035957000,0,ffff800000deb000) at ip_input_if+0x133 sys/netinet/ip_input.c:457
ipv4_input(ffff800000deb000,fffffd806d40bb00) at ipv4_input+0x47 sys/netinet/ip_input.c:327
ether_input(ffff800000deb000,fffffd806d40bb00) at ether_input+0x525
tun_dev_write(5d06,ffff80002c6bb978,ffff800035957000,2) at tun_dev_write+0x209 sys/net/if_tun.c:914
spec_write(ffff80002c6bb7d0) at spec_write+0xe1 sys/kern/spec_vnops.c:302
VOP_WRITE(fffffd806787ecd8,ffff80002c6bb978,11,fffffd807f7d7820) at VOP_WRITE+0xc3 sys/kern/vfs_vops.c:245
vn_write(fffffd806b655440,ffff80002c6bb978,0) at vn_write+0x15c sys/kern/vfs_vnops.c:408
dofilewritev(ffff80002a21e560,c8,ffff80002c6bb978,0,ffff80002c6bba30) at dofilewritev+0x1a9 sys/kern/sys_generic.c:375
sys_write(ffff80002a21e560,ffff80002c6bbae0,ffff80002c6bba30) at sys_write+0x87 sys/kern/sys_generic.c:295
syscall(ffff80002c6bbae0) at syscall+0x8cf mi_syscall sys/sys/syscall_mi.h:180 [inline]
syscall(ffff80002c6bbae0) at syscall+0x8cf sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x6cda07dbdb0, count: 236
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 50375c3b-e826-8a7e-06ca-b163c863336b
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 $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