uvm_fault(0xfffff9806d45e5d8, 0xf, 0, 1) -> e
fatal page fault in supervisor mode
trap type 6 code 0 rip ffffffff821c0f88 cs 8 rflags 10246 cr2 f cpl 0 rsp ffff80002b541500
gsbase 0xffffffff838f5ff0  kgsbase 0x0
panic: trap type 6, code=0, pc=ffffffff821c0f88
Starting stack trace...
panic(ffffffff834bc629) at panic+0x1ba sys/kern/subr_prf.c:229
kerntrap(ffff80002b541450) at kerntrap+0x2fb
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
ktrops(ffff80002a7494f8,ffffffffffffffff,0,80000538,fffff9806fbc3a70,fffff98007ffd3a8) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:728 [inline]
ktrops(ffff80002a7494f8,ffffffffffffffff,0,80000538,fffff9806fbc3a70,fffff98007ffd3a8) at ktrops+0x58 sys/kern/kern_ktrace.c:571
doktrace(fffff9806fbc3a70,4,538,0,ffff80002a7494f8) at doktrace+0x6bd ktrsetchildren sys/kern/kern_ktrace.c:596 [inline]
doktrace(fffff9806fbc3a70,4,538,0,ffff80002a7494f8) at doktrace+0x6bd sys/kern/kern_ktrace.c:518
sys_ktrace(ffff80002a7494f8,ffff80002b541860,ffff80002b5417b0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:559
syscall(ffff80002b541860) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80002b541860) at syscall+0x962 sys/arch/amd64/amd64/trap.c:791
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x9798e364810, count: 249
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 016acda6-80d9-6675-f1e2-930bbf0c87d3
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>