[  31.6002559] fatal integer divide fault in supervisor mode
[  31.6002559] trap type 8 code 0 rip 0xffffffff80ee4614 cs 0x8 rflags 0x10246 cr2 0x20000540 ilevel 0x8 rsp 0xffff98816dabfd40
[  31.6002559] curlwp 0xffff98800de018a0 pid 0.5 lowest kstack 0xffff98816dab82c0
[  31.6002559] panic: trap
[  31.6002559] cpu0: Begin traceback...
[  31.6002559] vpanic() at netbsd:vpanic+0x214
[  31.6002559] snprintf() at netbsd:snprintf
[  31.6002559] startlwp() at netbsd:startlwp
[  31.6002559] alltraps() at netbsd:alltraps+0xb2
[  31.6002559] callout_softclock() at netbsd:callout_softclock+0x237
[  31.6002559] softint_dispatch() at netbsd:softint_dispatch+0x23e
[  31.6002559] DDB lost frame for netbsd:Xsoftintr+0x5a, trying 0xffff98816dabfff0
[  31.6002559] Xsoftintr() at netbsd:Xsoftintr+0x5a
[  31.6002559] --- interrupt ---
[  31.6002559] 0:
[  31.6002559] cpu0: End traceback...

[  31.6002559] dumping to dev 4,1 (offset=0, size=0): not possible
[  31.6002559] rebooting...
SeaBIOS (version 1.8.2-20181029_212248-google)
Total RAM Size = 0x00000001e0000000 = 7680 MiB
CPUs found: 2     Max CPUs supported: 2
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 0x000f2a00: PCHS=0/0/0 translation=lba LCHS=520/128/63 s=4194304
Booting from Hard Disk 0...

>> NetBSD/x86 BIOS Boot, Revision 5.10 (Tue Jul 17 14:59:51 UTC 2018) (from NetBSD 8.0)
>> Memory: 639/3144640 k

     1. Boot normally
     2. Boot single user
     3. Disable ACPI
     4. Disable ACPI and SMP
     5. Drop to boot prompt