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From: Dan Moulding <dan@danm.net>
To: sam@gentoo.org
Cc: dan@danm.net, linux-hardening@vger.kernel.org,
	linux-kernel@vger.kernel.org, stable@vger.kernel.org,
	toralf.foerster@gmx.de
Subject: Re: 6.5.13 regression: BUG: kernel NULL pointer dereference, address: 0000000000000020
Date: Tue, 28 Nov 2023 15:48:16 -0700	[thread overview]
Message-ID: <20231128224816.6563-1-dan@danm.net> (raw)
In-Reply-To: <87jzq1lflc.fsf@gentoo.org>

Thanks, Sam. Yes it does look like that's the same issue.

I applied that patch to v6.6.3 instead of reverting the change to the
randomize_layout plugin and the problem also goes away with the patch
applied.

In that thread with the patch, Gustavo does mention that many other
zero-length arrays, besides this one in struct neighbor, were found in
the kernel source. But a quick (and possibly imperfect) grepping seems
to show that struct neighbor was the only one used with
__randomize_layout. So, I *think* it might be the only one that could
cause a problem with the recent change to the randomize_layout plugin.

-- Dan

  reply	other threads:[~2023-11-28 22:58 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-11-28 20:29 6.5.13 regression: BUG: kernel NULL pointer dereference, address: 0000000000000020 Toralf Förster
2023-11-28 21:30 ` dan
2023-11-28 21:42   ` Sam James
2023-11-28 21:42     ` Sam James
2023-11-28 22:48     ` Dan Moulding [this message]
2023-11-29 18:59       ` Gustavo A. R. Silva

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