panic: uvm_fault_unwire_locked: address not in map
Starting stack trace...
panic(ffffffff828fff9d) at panic+0x159 sys/kern/subr_prf.c:229
uvm_fault_unwire_locked(fffffd806956d978,20000000,20001000) at uvm_fault_unwire_locked+0x331 sys/uvm/uvm_fault.c:1663
uvm_fault_unwire(fffffd806956d978,20000000,20001000) at uvm_fault_unwire+0x43 sys/uvm/uvm_fault.c:1623
sys_sysctl(ffff80002a6b2d00,ffff800037897670,ffff8000378975c0) at sys_sysctl+0x236 sys/kern/kern_sysctl.c:259
syscall(ffff800037897670) at syscall+0x72a sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xf26002cd580, count: 251
End of stack trace.
syncing disks...24 6  done

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 9c8ab089-5fb3-144b-a4ba-2e178800b25c
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 0x000f27f0: 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 3.65
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