Fatal trap 9 when rebooting after installkernel on VirtualBox VM

[Yasuhiro KIMURA]

From: Yasuhiro KIMURA <yasu at utahime.org>
Subject: Fatal trap 9 when rebooting after installkernel on VirtualBox VM
Date: Sun, 02 Sep 2018 23:51:45 +0900 (JST)

> I'm tracking head with VirtualBox VM. Everytime new snapshot is
> released I update to same revision. So buildworld, buildkernel and
> installkernel always completes sucsessfully. But when rebooting system
> always crashes with 'Fatal trap 9: general protection fault while in
> kernel mode' message. And I closed VM window and restart VM, new
> kernel start up without any problem.
> https://www.utahime.org/FreeBSD/VirtualBox_FreeBSD_12.0-ALPHA3.png
> This is a screenshot of latest update (ALPHA3 -> ALPHA4).
> Does anyone else experienced it?

I submitted this problem to bugzilla.

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=231430

Screenshots when updateing to ALPHA5, ALPHA6 and ALPHA7 are also
attached. According to the advice of Mark Johnston (markj at freebsd.org)
they include output of 'bt' command.

Just FYI.

---
Yasuhiro KIMURA