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Date:      Thu, 11 Aug 2016 16:42:50 -0700
From:      David Wolfskill <david@catwhisker.org>
To:        Adrian Chadd <adrian.chadd@gmail.com>
Cc:        "stable@freebsd.org" <stable@freebsd.org>
Subject:   Re: Panic in stable/11 (amd64) @r303903: page fault while in kernel mode
Message-ID:  <20160811234250.GC1112@albert.catwhisker.org>
In-Reply-To: <CAJ-Vmon6Rak07ux%2BZX8ySnxkgn5Sv9Jtcus4SSv=J_sXTWQ%2BgQ@mail.gmail.com>
References:  <20160810165458.GB1112@albert.catwhisker.org> <570bda1e-d4d7-42dc-6037-7c321ba9e97d@FreeBSD.org> <CAJ-Vmon6Rak07ux%2BZX8ySnxkgn5Sv9Jtcus4SSv=J_sXTWQ%2BgQ@mail.gmail.com>

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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.....

> ...=20
> >> 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
--=20
David H. Wolfskill				david@catwhisker.org
Those who would murder in the name of God or prophet are blasphemous coward=
s.

See http://www.catwhisker.org/~david/publickey.gpg for my public key.

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