uvm_fault(0xfffffd807914d310, 0x4, 0, 1) -> e
fatal page fault in supervisor mode
trap type 6 code 0 rip ffffffff81c35e8f cs 8 rflags 10246 cr2 4 cpl 0 rsp ffff800022d42010
gsbase 0xffffffff8295bff0  kgsbase 0x0
panic: trap type 6, code=0, pc=ffffffff81c35e8f
Starting stack trace...
panic(ffffffff825a1021) at panic+0x16b sys/kern/subr_prf.c:229
kerntrap(ffff800022d41f60) at kerntrap+0x1c7 sys/arch/amd64/amd64/trap.c:327
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
igmp_leavegroup(ffff800000c9cb40,ffff800000689000) at igmp_leavegroup+0xaf sys/netinet/igmp.c:512
in_delmulti(ffff800000c9cb40) at in_delmulti+0xd4 sys/netinet/in.c:927
ip_freemoptions(ffff800000d5a220) at ip_freemoptions+0x4d sys/netinet/ip_output.c:1770
in_pcbdetach(fffffd807bc07310) at in_pcbdetach+0x93 sys/netinet/in_pcb.c:591
udp_detach(fffffd806fbb57b8) at udp_detach+0x3b sys/netinet/udp_usrreq.c:1113
soclose(fffffd806fbb57b8,0) at soclose+0x253 pru_detach sys/sys/protosw.h:278 [inline]
soclose(fffffd806fbb57b8,0) at soclose+0x253 sys/kern/uipc_socket.c:389
soo_close(fffffd806bbf4900,ffff800021258a80) at soo_close+0x40
fdrop(fffffd806bbf4900,ffff800021258a80) at fdrop+0xc7 sys/kern/kern_descrip.c:1274
closef(fffffd806bbf4900,ffff800021258a80) at closef+0x11c sys/kern/kern_descrip.c:1258
fdfree(ffff800021258a80) at fdfree+0xe4 sys/kern/kern_descrip.c:1190
exit1(ffff800021258a80,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:196
sys_exit(ffff800021258a80,ffff800022d423b0,ffff800022d42400) at sys_exit+0x16 sys/kern/kern_exit.c:89
syscall(ffff800022d42480) at syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline]
syscall(ffff800022d42480) at syscall+0x438 sys/arch/amd64/amd64/trap.c:599
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffff3b8a0, count: 240
End of stack trace.

dump to dev 4,1 not possible
rpaebnico: okteirnnge.l. .d
iagnostic asserSeaBIOS (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 68bf758f-d7e1-83a6-91e2-c70932eb46bc
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 0x000f2480: 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 3.55
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