[  46.1610309] fatal page fault in supervisor mode
[  46.1610309] trap type 6 code 0 rip 0xffffffff80fd637c cs 0x8 rflags 0x10287 cr2 0xffff900000000000 ilevel 0 rsp 0xffffb9016efcfc88
[  46.1772533] curlwp 0xffffb90012fd3580 pid 584.2 lowest kstack 0xffffb9016efc82c0
[  46.1848143] panic: trap
[  46.1848143] cpu0: Begin traceback...
[  46.1908433] vpanic() at netbsd:vpanic+0x214
[  46.1983120] snprintf() at netbsd:snprintf
[  46.2083181] startlwp() at netbsd:startlwp
[  46.2183237] alltraps() at netbsd:alltraps+0xad
[  46.2283304] shm_delete_mapping() at netbsd:shm_delete_mapping+0x7f
[  46.2383334] sys_shmat() at netbsd:sys_shmat+0x4cd
[  46.2483392] sys___syscall() at netbsd:sys___syscall+0xe2
[  46.2583484] syscall() at netbsd:syscall+0x348
[  46.2685095] --- syscall (number 198) ---
[  46.2685095] 708fc7c3f4aa:
[  46.2685095] cpu0: End traceback...

[  46.2809327] dumping to dev 4,1 (offset=0, size=0): not possible
[  46.2809327] rebooting...
SeaBIOS (version 1.8.2-20190308_060531-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 0x000f29d0: 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