uvm_fault(0xfffffd806c1ac5d8, 0x0, 0, 1) -> e
fatal page fault in supervisor mode
trap type 6 code 0 rip ffffffff816fad68 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80003bd40b80
gsbase 0xffffffff83835ff0  kgsbase 0x0
panic: trap type 6, code=0, pc=ffffffff816fad68
Starting stack trace...
panic(ffffffff8338d993) at panic+0x1ba sys/kern/subr_prf.c:229
kerntrap(ffff80003bd40ad0) at kerntrap+0x2fb
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
dt_ioctl_record_stop(ffff800001595a80) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593
dtioctl(21e5f,80044403,ffff80003bd40e10,1,ffff80002a8be2e0) at dtioctl+0x516 sys/dev/dt/dt_dev.c:325
VOP_IOCTL(fffffd806a9ca2d0,80044403,ffff80003bd40e10,1,fffffd8007bfb6e8,ffff80002a8be2e0) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd805fc698f8,80044403,ffff80003bd40e10,ffff80002a8be2e0) at vn_ioctl+0xea sys/kern/vfs_vnops.c:531
sys_ioctl(ffff80002a8be2e0,ffff80003bd40fe0,ffff80003bd40f30) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1
syscall(ffff80003bd40fe0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003bd40fe0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:765
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x232eb03fde0, 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 e4c28bce-9379-8bb2-f2c8-a7cf484f58e0
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 $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