linux-kernel - Re: [PATCH] ring-buffer: Fix a oob in __rb_map

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Message-ID: <20241218093344.37c1dff8@gandalf.local.home>
Date: Wed, 18 Dec 2024 09:33:44 -0500
From: Steven Rostedt <rostedt@...dmis.org>
To: Vincent Donnefort <vdonnefort@...gle.com>
Cc: Edward Adam Davis <eadavis@...com>, linux-kernel@...r.kernel.org,
 linux-trace-kernel@...r.kernel.org, mathieu.desnoyers@...icios.com,
 mhiramat@...nel.org, syzbot+345e4443a21200874b18@...kaller.appspotmail.com,
 syzkaller-bugs@...glegroups.com, Jeongjun Park <aha310510@...il.com>,
 david@...hat.com
Subject: Re: [PATCH] ring-buffer: Fix a oob in __rb_map_vma

On Wed, 18 Dec 2024 14:31:31 +0000
Vincent Donnefort <vdonnefort@...gle.com> wrote:

> Aside, there's a selftest to check for the overflow of subbufs with the
> mapping... but of course it didn't test with offset > nr_subbufs.
> 
> Do you think it is worth to extend it to cover this case? I'm happy to do a
> quick patch.

Yes, it should check that case.

Thanks,

-- Steve