Panic in stable/11 (amd64) @r303903: page fault while in kernel mode

[Adrian Chadd]

Just pop open the crashdump and "print *ifp" in the last stack frame
before trap.


-a


On 11 August 2016 at 16:42, David Wolfskill <david at catwhisker.org> wrote:
> On Thu, Aug 11, 2016 at 04:37:26PM -0700, Adrian Chadd wrote:
>> Eep. Is this anotehr case where there's a race and ifp is NULL or the
>> ll pointer for ifp is NULL or use-after-free'd?
>
> I don't know, but it's the only panic of a similar nature I've seen --
> though since on any given day, I'm usually running FreeBSD freshly-built
> that morning, "trends" might be a little more difficult to determine.
>
>> I remember bumping into these here and there because we don't seem to
>> have a well defined lifecycle for lladdr access. ;(
>
> Well, you're quite welcome to grab the crash data & poke around, or tell
> me where to look, and I'll do so.....
>
>> ...
>> >> Gory details (both "normal" and gzipped, and including the crash
>> >> dump and crashinfo) are in
>> >> <http://www.catwhisker.org/~david/FreeBSD/stable_11/2016.08.10/>.
>> ...
>
> Peace,
> david
> --
> David H. Wolfskill                              david at catwhisker.org
> Those who would murder in the name of God or prophet are blasphemous cowards.
>
> See http://www.catwhisker.org/~david/publickey.gpg for my public key.