[ 173.8588246] fatal integer divide fault in supervisor mode
[ 173.8588246] trap type 8 code 0 rip 0xffffffff80f06af4 cs 0x8 rflags 0x10246 cr2 0x62d151 ilevel 0x8 rsp 0xffffb6016dabfd40
[ 173.8588246] curlwp 0xffffb6000de018a0 pid 0.5 lowest kstack 0xffffb6016dab82c0
[ 173.8588246] panic: trap
[ 173.8588246] cpu0: Begin traceback...
[ 173.8588246] vpanic() at netbsd:vpanic+0x214
[ 173.8588246] snprintf() at netbsd:snprintf
[ 173.8588246] startlwp() at netbsd:startlwp
[ 173.8588246] alltraps() at netbsd:alltraps+0xb2
[ 173.8588246] callout_softclock() at netbsd:callout_softclock+0x237
[ 173.8588246] softint_dispatch() at netbsd:softint_dispatch+0x23e
[ 173.8588246] DDB lost frame for netbsd:Xsoftintr+0x5a, trying 0xffffb6016dabfff0
[ 173.8588246] Xsoftintr() at netbsd:Xsoftintr+0x5a
[ 173.8588246] --- interrupt ---
[ 173.8588246] 0:
[ 173.8588246] cpu0: End traceback...

[ 173.8588246] dumping to dev 4,1 (offset=0, size=0): not possible
[ 173.8588246] rebooting...
SeaBIOS (version 1.8.2-20190204_181744-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