uvm_fault(0xfffffd8067428458, 0x4, 0, 1) -> e
fatal page fault in supervisor mode
trap type 6 code 0 rip ffffffff8128bb3f cs 8 rflags 10246 cr2 4 cpl 0 rsp ffff800027bc6b40
gsbase 0xffff800020dd8ff0  kgsbase 0x0
panic: trap type 6, code=0, pc=ffffffff8128bb3f
Starting stack trace...
panic(ffffffff8259d4b1) at panic+0x16b sys/kern/subr_prf.c:229
kerntrap(ffff800027bc6a90) at kerntrap+0x1c7 sys/arch/amd64/amd64/trap.c:327
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
igmp_leavegroup(ffff800000c11e40,ffff800000689000) at igmp_leavegroup+0xaf sys/netinet/igmp.c:512
in_delmulti(ffff800000c11e40) at in_delmulti+0xd4 sys/netinet/in.c:934
ip_freemoptions(ffff8000006c6670) at ip_freemoptions+0x4d sys/netinet/ip_output.c:1770
in_pcbdetach(fffffd805a02c480) at in_pcbdetach+0x93 sys/netinet/in_pcb.c:591
tcp_close(ffff800000bce918) at tcp_close+0x13d sys/netinet/tcp_subr.c:534
tcp_detach(fffffd806fb555d0) at tcp_detach+0x67 sys/netinet/tcp_usrreq.c:534
soclose(fffffd806fb555d0,0) at soclose+0x253 pru_detach sys/sys/protosw.h:281 [inline]
soclose(fffffd806fb555d0,0) at soclose+0x253 sys/kern/uipc_socket.c:389
soo_close(fffffd806be7b0b0,ffff800021317268) at soo_close+0x40
fdrop(fffffd806be7b0b0,ffff800021317268) at fdrop+0xc7 sys/kern/kern_descrip.c:1274
closef(fffffd806be7b0b0,ffff800021317268) at closef+0x11c sys/kern/kern_descrip.c:1258
fdfree(ffff800021317268) at fdfree+0xe4 sys/kern/kern_descrip.c:1190
exit1(ffff800021317268,0,0,3) at exit1+0x37d sys/kern/kern_exit.c:196
single_thread_check_locked(ffff800021317268,0,0) at single_thread_check_locked+0x227 sys/kern/kern_sig.c:2016
userret(ffff800021317268) at userret+0x236 single_thread_check sys/kern/kern_sig.c:2054 [inline]
userret(ffff800021317268) at userret+0x236 sys/kern/kern_sig.c:2004
syscall(ffff800027bc70d0) at syscall+0x579 mi_syscall_return sys/sys/syscall_mi.h:128 [inline]
syscall(ffff800027bc70d0) at syscall+0x579 sys/arch/amd64/amd64/trap.c:620
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7fffffad30, count: 238
End of stack trace.

dump to dev 4,1 not possible
rpeabnoiotic:ng k..e.r
nel diagnostiSeaBIOS (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 bbcbd082-acfd-33d1-ec83-4c20355829bb
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