FBSD 9.2 RC crashes running as virtualbox host

[Warren Block]

On Sat, 17 Aug 2013, Kevin Oberman wrote:

> I built my new kernel and installed it, then rebooted before rebuilding
> virtualbox-ose-kmod. Then I rebooted once again (which I think I forgot to
> do the first time).  Then I started my VM and it was fine. There are three
> kernel modules and I find it easier to reboot than to unload and reload all
> three. I've also sometimes had "odd" behavior and the occasional panic when
> unloading and reloading kernel modules. I am now running r254456 and all is
> well.

That could be why I've had no problems.  I generally only have vboxdrv 
loaded.