linux-hardening - Re: [PATCH v3 2/6] exit: Put an upper limit on how often we can oops

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Date:   Thu, 19 Jan 2023 16:28:42 -0800
From:   Kees Cook <keescook@...omium.org>
To:     Seth Jenkins <sethjenkins@...gle.com>
Cc:     SeongJae Park <sj@...nel.org>, Jann Horn <jannh@...gle.com>,
        Luis Chamberlain <mcgrof@...nel.org>,
        Greg KH <gregkh@...uxfoundation.org>,
        Linus Torvalds <torvalds@...uxfoundation.org>,
        Andy Lutomirski <luto@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        tangmeng <tangmeng@...ontech.com>,
        "Guilherme G. Piccoli" <gpiccoli@...lia.com>,
        Tiezhu Yang <yangtiezhu@...ngson.cn>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        "Eric W. Biederman" <ebiederm@...ssion.com>,
        Arnd Bergmann <arnd@...db.de>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Juri Lelli <juri.lelli@...hat.com>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Ben Segall <bsegall@...gle.com>,
        Daniel Bristot de Oliveira <bristot@...hat.com>,
        Valentin Schneider <vschneid@...hat.com>,
        Andrey Ryabinin <ryabinin.a.a@...il.com>,
        Alexander Potapenko <glider@...gle.com>,
        Andrey Konovalov <andreyknvl@...il.com>,
        Vincenzo Frascino <vincenzo.frascino@....com>,
        David Gow <davidgow@...gle.com>,
        "Paul E. McKenney" <paulmck@...nel.org>,
        Jonathan Corbet <corbet@....net>,
        Baolin Wang <baolin.wang@...ux.alibaba.com>,
        "Jason A. Donenfeld" <Jason@...c4.com>,
        Eric Biggers <ebiggers@...gle.com>,
        Huang Ying <ying.huang@...el.com>,
        Anton Vorontsov <anton@...msg.org>,
        Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        Laurent Dufour <ldufour@...ux.ibm.com>,
        Rob Herring <robh@...nel.org>, linux-kernel@...r.kernel.org,
        kasan-dev@...glegroups.com, linux-mm@...ck.org,
        linux-doc@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: Re: [PATCH v3 2/6] exit: Put an upper limit on how often we can oops

On Thu, Jan 19, 2023 at 03:19:21PM -0500, Seth Jenkins wrote:
> > Do you have a plan to backport this into upstream LTS kernels?
> 
> As I understand, the answer is "hopefully yes" with the big
> presumption that all stakeholders are on board for the change. There
> is *definitely* a plan to *submit* backports to the stable trees, but
> ofc it will require some approvals.

I've asked for at least v6.1.x (it's a clean cherry-pick). Earlier
kernels will need some non-trivial backporting. Is there anyone that
would be interested in stepping up to do that?

https://lore.kernel.org/lkml/202301191532.AEEC765@keescook

-Kees

-- 
Kees Cook