uvm_fault(0xffffffff83624b80, 0xffffffff00008d08, 0, 1) -> e
fatal page fault in supervisor mode
trap type 6 code 0 rip ffffffff8281ef76 cs 8 rflags 10246 cr2 ffffffff00008d08 cpl 0 rsp ffff80002db780b0
gsbase 0xffffffff834deff0  kgsbase 0x0
panic: trap type 6, code=0, pc=ffffffff8281ef76
Starting stack trace...
panic(ffffffff82feb7c0) at panic+0x1d0 sys/kern/subr_prf.c:229
kerntrap(ffff80002db78000) at kerntrap+0x29b sys/arch/amd64/amd64/trap.c:327
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
witness_checkorder(ffff800001401e18,9,0) at witness_checkorder+0x266 sys/kern/subr_witness.c:794
mtx_enter(ffff800001401e08) at mtx_enter+0x47 sys/kern/kern_lock.c:238
klist_mutex_lock(ffff800001401e08) at klist_mutex_lock+0x32 sys/kern/kern_event.c:2352
klist_invalidate(ffff800001401ec8) at klist_invalidate+0xef klist_lock sys/kern/kern_event.c:2317 [inline]
klist_invalidate(ffff800001401ec8) at klist_invalidate+0xef sys/kern/kern_event.c:2283
bpfsdetach(ffff8000013dd380) at bpfsdetach+0x12f sys/net/bpf.c:1800
bpfdetach(ffff800001298800) at bpfdetach+0xa6
if_detach(ffff800001298800) at if_detach+0x14f sys/net/if.c:1193
tun_clone_destroy(ffff800001298800) at tun_clone_destroy+0x2d6 sys/net/if_tun.c:338
if_clone_destroy(ffff80002db784a0) at if_clone_destroy+0x1d7 sys/net/if.c:1382
ifioctl(ffff8000013e1cc0,80206979,ffff80002db784a0,ffff8000ffff31d8) at ifioctl+0x5c5
sys_ioctl(ffff8000ffff31d8,ffff80002db78680,ffff80002db785d0) at sys_ioctl+0x67c
syscall(ffff80002db78680) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline]
syscall(ffff80002db78680) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xe1288014a30, count: 241
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 43b93b83-f320-801a-a1ee-23eab263a335
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 0x000f27c0: 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