Fatal trap 12: page fault on Acer Chromebook 720 (peppy)

[Konstantin Belousov]

On Wed, Aug 15, 2018 at 12:51:06AM +0200, Michael Gmelin wrote:
> Reviving this old thread, since I just updated to r337818 and a similar
> problem is happening again. Since the fix in r334799 (review
> https://reviews.freebsd.org/D15675) (mp_)machdep.c have been touched,
> so maybe this is related
> (https://svnweb.freebsd.org/base?view=revision&revision=334799).
> 
> Please see the screenshot of the panic below:
> https://gist.github.com/grembo/78d0f2a100dd4f16775b85a118769658
> 
> This is me not digging any deeper, hoping that this is something
> obvious. Please let me know if you need more input.

I do not see how recent mp_machdep.c changes could affect this.
Can you try newest kernel but old loader ?