login: [ 100.4284012] fatal integer divide fault in supervisor mode
[ 100.4284012] trap type 8 code 0 rip 0xffffffff80fac0c4 cs 0x8 rflags 0x10246 cr2 0x7f7fffee5f98 ilevel 0x8 rsp 0xffffa4016dabfd40
[ 100.4284012] curlwp 0xffffa4000de018a0 pid 0.5 lowest kstack 0xffffa4016dab82c0
[ 100.4284012] panic: trap
[ 100.4284012] cpu0: Begin traceback...
[ 100.4284012] vpanic() at netbsd:vpanic+0x214
[ 100.4284012] snprintf() at netbsd:snprintf
[ 100.4284012] startlwp() at netbsd:startlwp
[ 100.4284012] alltraps() at netbsd:alltraps+0xb2
[ 100.4284012] callout_softclock() at netbsd:callout_softclock+0x237
[ 100.4284012] softint_dispatch() at netbsd:softint_dispatch+0x23e
[ 100.4284012] DDB lost frame for netbsd:Xsoftintr+0x5a, trying 0xffffa4016dabfff0
[ 100.4284012] Xsoftintr() at netbsd:Xsoftintr+0x5a
[ 100.4284012] --- interrupt ---
[ 100.4284012] 0:
[ 100.4284012] cpu0: End traceback...

[ 100.4284012] dumping to dev 4,1 (offset=0, size=0): not possible
[ 100.4284012] rebooting...
SeaBIOS (version 1.8.2-20190122_225043-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 0x000f29c0: 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