panic: trap type 6, code=10, pc=0
Starting stack trace...
panic(ffffffff8347cd58) at panic+0x1d0 sys/kern/subr_prf.c:229
kerntrap(ffff80002a1d2050) at kerntrap+0x30b
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
0(ffffffff83950e98,fffffd8062d72f08,e0b629fc79ca9a74,0,fffffd8062d72f08,28b) at 0
softclock_process_kclock_timeout(fffffd8062d72f08,0) at softclock_process_kclock_timeout+0x2a7 sys/kern/kern_timeout.c:729
softclock(0) at softclock+0x179 sys/kern/kern_timeout.c:782
softintr_dispatch(0) at softintr_dispatch+0x13b sys/kern/kern_softintr.c:84
dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
acpicpu_idle() at acpicpu_idle+0x457 sys/dev/acpi/acpicpu_x86.c:1224
sched_idle(ffffffff8391cff0) at sched_idle+0x391 sys/kern/kern_sched.c:191
end trace frame: 0x0, count: 246
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 389fa873-dfcb-7256-506e-5266d86d0b3b
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 0x000f26c0: 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