uvm_fault(0xfffffd80681565e8, 0x0, 0, 1) -> e
fatal page fault in supervisor mode
trap type 6 code 0 rip ffffffff8190e738 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80003c500f30
gsbase 0xffffffff837efff0  kgsbase 0x0
panic: trap type 6, code=0, pc=ffffffff8190e738
Starting stack trace...
panic(ffffffff833a4fb8) at panic+0x1d0 sys/kern/subr_prf.c:229
kerntrap(ffff80003c500e80) at kerntrap+0x30b
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
dt_ioctl_record_stop(ffff800001481000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586
dtioctl(11e5f,80044403,ffff80003c5011c0,1,ffff8000ffffc008) at dtioctl+0x536 sys/dev/dt/dt_dev.c:318
VOP_IOCTL(fffffd80600ca058,80044403,ffff80003c5011c0,1,fffffd80097fb478,ffff8000ffffc008) at VOP_IOCTL+0xac sys/kern/vfs_vops.c:264
vn_ioctl(fffffd80653fcad8,80044403,ffff80003c5011c0,ffff8000ffffc008) at vn_ioctl+0xf8 sys/kern/vfs_vnops.c:531
sys_ioctl(ffff8000ffffc008,ffff80003c5013a0,ffff80003c5012f0) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1
syscall(ffff80003c5013a0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c5013a0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x4b866e33c80, count: 247
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 dc1537e2-3f8b-09d0-7a97-ada6c38139e5
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 0x000f2820: 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