panic: trap type 6, code=0, pc=ffffffff819b70e8
Starting stack trace...
panic(ffffffff833cff77) at panic+464
kerntrap(ffff80002a35e230) at kerntrap+779
alltraps_kern_meltdown() at alltraps_kern_meltdown+123
dt_ioctl_record_stop(ffff800001496000) at dt_ioctl_record_stop+264
dtclose(11e5f,81,2000,ffff800030feb4e0) at dtclose+265
spec_close(ffff80002a35e3e0) at spec_close+1126
VOP_CLOSE(fffffd805d237638,81,fffffd80097fd3a8,ffff800030feb4e0) at VOP_CLOSE+306
vn_closefile(fffffd806a3edb88,ffff800030feb4e0) at vn_closefile+299
fdrop(fffffd806a3edb88,ffff800030feb4e0) at fdrop+289
closef(fffffd806a3edb88,ffff800030feb4e0) at closef+402
fdfree(ffff800030feb4e0) at fdfree+278
exit1(ffff800030feb4e0,0,0,1) at exit1+1398
sys_exit(ffff800030feb4e0,ffff80002a35e750,ffff80002a35e6a0) at sys_exit+26
syscall(ffff80002a35e750) at syscall+2839
Xsyscall() at Xsyscall+296
end of kernel
end trace frame: 0x70483ca55d10, 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 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 0x000f26e0: 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 3.67
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