uvm_fault(0xfffffd8008592cf0, 0x58, 0, 1) -> e
fatal page fault in supervisor mode
trap type 6 code 0 rip ffffffff813fbf75 cs 8 rflags 10246 cr2 58 cpl 0 rsp ffff80002229ebc0
gsbase 0xffffffff82808ff0  kgsbase 0x0
panic: trap type 6, code=0, pc=ffffffff813fbf75
Starting stack trace...
panic(ffffffff82454cd0) at panic+0x16b sys/kern/subr_prf.c:233
kerntrap(ffff80002229eb10) at kerntrap+0x1c7 sys/arch/amd64/amd64/trap.c:313
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
rtm_output(ffff800000bb2f00,ffff80002229ed08,ffff80002229ec68,8,0) at rtm_output+0x3d5 sys/net/rtsock.c:1035
route_output(fffffd806a206d00,fffffd806e2b35b8,0,0) at route_output+0x6b8 sys/net/rtsock.c:864
route_usrreq(fffffd806e2b35b8,9,fffffd806a206d00,0,0,ffff800021270d28) at route_usrreq+0x391 sys/net/rtsock.c:283
sosend(fffffd806e2b35b8,0,ffff80002229ef10,0,0,0) at sosend+0x671 sys/kern/uipc_socket.c:573
sendit(ffff800021270d28,3,ffff80002229eff0,0,ffff80002229f0d0) at sendit+0x589 sys/kern/uipc_syscalls.c:653
sys_sendto(ffff800021270d28,ffff80002229f088,ffff80002229f0d0) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:520
syscall(ffff80002229f150) at syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff80002229f150) at syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x9b87d540150, count: 246
End of stack trace.

dump to dev 4,1 not possible
rpebaonioct:i nkeg.r.n.e
l diagnostic assertionSeaBIOS (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 003a59b7-54eb-38ca-1cfb-72bc238e03e5
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 0x000f2430: 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 3.53
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