uvm_fault(0xffffef006d9b08b0, 0x70, 0, 1) -> e
fatal page fault in supervisor mode
trap type 6 code 0 rip ffffffff816cead8 cs 8 rflags 10246 cr2 70 cpl 0 rsp ffff8000388df9e0
gsbase 0xffffffff83970ff0  kgsbase 0x0
panic: trap type 6, code=0, pc=ffffffff816cead8
Starting stack trace...
panic(ffffffff834b7279) at panic+0x1ba sys/kern/subr_prf.c:229
kerntrap(ffff8000388df930) at kerntrap+0x2fb
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
dovutimens(ffff80003c995258,ffffef006cf23978,ffff8000388dfaf0) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691
sys_futimens(ffff80003c995258,ffff8000388dfc30,ffff8000388dfb80) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2767
syscall(ffff8000388dfc30) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff8000388dfc30) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xedbbd35ee30, count: 250
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 860ebdd0-427f-2be6-5726-fd56b385017a
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 0x000f2600: 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>