panic: trap type 6, code=10, pc=3c729
Starting stack trace...
panic(ffffffff82850168) at panic+0x16f sys/kern/subr_prf.c:229
kerntrap(ffff80003230a750) 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(ffff80003230aa28,ffff80003230ab20,0) at rt_clone+0x7d sys/net/route.c:383
route_mpath(ffff80003230ab08,fffffd806d02ff30,fffffd806d02ff2c,0) at route_mpath+0x112 rt_match sys/net/route.c:360 [inline]
route_mpath(ffff80003230ab08,fffffd806d02ff30,fffffd806d02ff2c,0) at route_mpath+0x112 rtalloc_mpath sys/net/route.c:476 [inline]
route_mpath(ffff80003230ab08,fffffd806d02ff30,fffffd806d02ff2c,0) at route_mpath+0x112 sys/net/route.c:255
in_ouraddr(fffffd806fdddc00,ffff800000dec000,ffff80003230ab08) at in_ouraddr+0x98 sys/netinet/ip_input.c:830
ip_input_if(ffff80003230abf8,ffff80003230ac04,ffff800036376000,0,ffff800000dec000) at ip_input_if+0x28e sys/netinet/ip_input.c:486
ipv4_input(ffff800000dec000,fffffd806fdddc00) at ipv4_input+0x47 sys/netinet/ip_input.c:327
ether_input(ffff800000dec000,fffffd806fdddc00) at ether_input+0x525
tun_dev_write(5d07,ffff80003230af78,ffff800036376000,2) at tun_dev_write+0x209 sys/net/if_tun.c:914
spec_write(ffff80003230add0) at spec_write+0xe1 sys/kern/spec_vnops.c:302
VOP_WRITE(fffffd805b5b6210,ffff80003230af78,11,fffffd807f7d7820) at VOP_WRITE+0xc3 sys/kern/vfs_vops.c:245
vn_write(fffffd806792e4d0,ffff80003230af78,0) at vn_write+0x15c sys/kern/vfs_vnops.c:408
dofilewritev(ffff80002a1fe2b0,c8,ffff80003230af78,0,ffff80003230b030) at dofilewritev+0x1a9 sys/kern/sys_generic.c:375
sys_write(ffff80002a1fe2b0,ffff80003230b0e0,ffff80003230b030) at sys_write+0x87 sys/kern/sys_generic.c:295
syscall(ffff80003230b0e0) at syscall+0x8cf mi_syscall sys/sys/syscall_mi.h:180 [inline]
syscall(ffff80003230b0e0) at syscall+0x8cf sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x780194422f0, 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 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 $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