From: Tyler Hicks <tyhicks@linux.vnet.ibm.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-fsdevel@vger.kernel.org,
bugzilla-daemon@bugzilla.kernel.org,
bugme-daemon@bugzilla.kernel.org,
Miklos Szeredi <miklos@szeredi.hu>,
"Rafael J. Wysocki" <rjw@sisk.pl>,
baryluk@smp.if.uj.edu.pl
Subject: Re: [Bugme-new] [Bug 34732] New: BUG: unable to handle kernel NULL pointer dereference at 00000020
Date: Mon, 9 May 2011 16:48:45 -0500 [thread overview]
Message-ID: <20110509214844.GA26532@boyd.l.tihix.com> (raw)
In-Reply-To: <20110509120707.f46b15e9.akpm@linux-foundation.org>
On Mon May 09, 2011 at 12:07:07PM -0700, Andrew Morton <akpm@linux-foundation.org> wrote:
> I assume this is a post-2.6.38 regression.
>
> I can't begin to think what might cause this. Is it reproducible?
I'd bet on e7c0a167860620bd2938366896964f729ddaeaaa
eCryptfs uses lookup_one_len() to lookup lower files, which means that
the lower filesystem's d_revalidate() can get a NULL nameidata pointer.
That commit dropped the check on nd before dereferencing it.
Tyler
next prev parent reply other threads:[~2011-05-09 21:48 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <bug-34732-10286@https.bugzilla.kernel.org/>
2011-05-09 19:07 ` [Bugme-new] [Bug 34732] New: BUG: unable to handle kernel NULL pointer dereference at 00000020 Andrew Morton
2011-05-09 21:48 ` Tyler Hicks [this message]
2011-05-10 15:53 ` Miklos Szeredi
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