linux-hardening - Re: [PATCH next v2 0/6] exit: Put an upper limit on how often we can oops

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Date:   Wed, 9 Nov 2022 13:16:50 -0800
From:   Luis Chamberlain <mcgrof@...nel.org>
To:     Kees Cook <keescook@...omium.org>
Cc:     Jann Horn <jannh@...gle.com>, Greg KH <gregkh@...uxfoundation.org>,
        Linus Torvalds <torvalds@...uxfoundation.org>,
        Seth Jenkins <sethjenkins@...gle.com>,
        Andy Lutomirski <luto@...nel.org>,
        Petr Mladek <pmladek@...e.com>,
        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>, Marco Elver <elver@...gle.com>,
        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>, Mel Gorman <mgorman@...e.de>,
        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 next v2 0/6] exit: Put an upper limit on how often we can
 oops

On Wed, Nov 09, 2022 at 12:00:43PM -0800, Kees Cook wrote:
> Hi,
> 
> This builds on Jann's v1 patch[1]. Changes in v2:
> - move sysctl into kernel/exit.c (where it belongs)
> - expand Documentation slightly
> 
> New stuff in v2:
> - expose oops_count to sysfs
> - consolidate panic_on_warn usage
> - introduce warn_limit
> - expose warn_count to sysfs
> 
> [1] https://lore.kernel.org/lkml/20221107201317.324457-1-jannh@google.com
> 
> Jann Horn (1):
>   exit: Put an upper limit on how often we can oops
> 
> Kees Cook (5):
>   panic: Separate sysctl logic from CONFIG_SMP
>   exit: Expose "oops_count" to sysfs
>   panic: Consolidate open-coded panic_on_warn checks
>   panic: Introduce warn_limit
>   panic: Expose "warn_count" to sysfs

For all:

Reviewed-by: Luis Chamberlain <mcgrof@...nel.org>

  Luis