linux-kernel - [PATCH v3 0/6] exit: Put an upper limit on how often we can oops

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Message-Id: <20221117233838.give.484-kees@kernel.org>
Date:   Thu, 17 Nov 2022 15:43:20 -0800
From:   Kees Cook <keescook@...omium.org>
To:     Jann Horn <jannh@...gle.com>
Cc:     Kees Cook <keescook@...omium.org>,
        Seth Jenkins <sethjenkins@...gle.com>,
        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>,
        Luis Chamberlain <mcgrof@...nel.org>,
        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: [PATCH v3 0/6] exit: Put an upper limit on how often we can oops

Hi,

This builds on Jann's v1 patch[1]. Changes in v3:
- fix #if/#ifdef confusion (Bill)
- rename from "reason" or "origin" and add it to the warn output (Marco)

v2: https://lore.kernel.org/lkml/20221109194404.gonna.558-kees@kernel.org/

Thanks,

-Kees

[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

 .../ABI/testing/sysfs-kernel-oops_count       |  6 ++
 .../ABI/testing/sysfs-kernel-warn_count       |  6 ++
 Documentation/admin-guide/sysctl/kernel.rst   | 17 ++++++
 MAINTAINERS                                   |  2 +
 include/linux/panic.h                         |  1 +
 kernel/exit.c                                 | 60 +++++++++++++++++++
 kernel/kcsan/report.c                         |  3 +-
 kernel/panic.c                                | 45 +++++++++++++-
 kernel/sched/core.c                           |  3 +-
 lib/ubsan.c                                   |  3 +-
 mm/kasan/report.c                             |  4 +-
 mm/kfence/report.c                            |  3 +-
 12 files changed, 140 insertions(+), 13 deletions(-)
 create mode 100644 Documentation/ABI/testing/sysfs-kernel-oops_count
 create mode 100644 Documentation/ABI/testing/sysfs-kernel-warn_count

-- 
2.34.1