linux-kernel - [PATCH v5 0/6] ubsan: Split out bounds checker

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Date:   Thu, 27 Feb 2020 11:35:10 -0800
From:   Kees Cook <keescook@...omium.org>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Kees Cook <keescook@...omium.org>,
        Andrey Ryabinin <aryabinin@...tuozzo.com>,
        Elena Petrova <lenaptr@...gle.com>,
        Andrey Konovalov <andreyknvl@...gle.com>,
        Alexander Potapenko <glider@...gle.com>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        Arnd Bergmann <arnd@...db.de>,
        Ard Biesheuvel <ard.biesheuvel@...aro.org>,
        kasan-dev@...glegroups.com, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, kernel-hardening@...ts.openwall.com,
        syzkaller@...glegroups.com
Subject: [PATCH v5 0/6] ubsan: Split out bounds checker

Argh, v4 missed uncommitted changes. v5 brown paper bag release! :)

This splits out the bounds checker so it can be individually used. This
is enabled in Android and hopefully for syzbot. Includes LKDTM tests for
behavioral corner-cases (beyond just the bounds checker), and adjusts
ubsan and kasan slightly for correct panic handling.

-Kees

v5:
 - _actually_ use hyphenated bug class names (andreyknvl)
v4: https://lore.kernel.org/lkml/20200227184921.30215-1-keescook@chromium.org
v3: https://lore.kernel.org/lkml/20200116012321.26254-1-keescook@chromium.org
v2: https://lore.kernel.org/lkml/20191121181519.28637-1-keescook@chromium.org
v1: https://lore.kernel.org/lkml/20191120010636.27368-1-keescook@chromium.org


Kees Cook (6):
  ubsan: Add trap instrumentation option
  ubsan: Split "bounds" checker from other options
  lkdtm/bugs: Add arithmetic overflow and array bounds checks
  ubsan: Check panic_on_warn
  kasan: Unset panic_on_warn before calling panic()
  ubsan: Include bug type in report header

 drivers/misc/lkdtm/bugs.c  | 75 ++++++++++++++++++++++++++++++++++++++
 drivers/misc/lkdtm/core.c  |  3 ++
 drivers/misc/lkdtm/lkdtm.h |  3 ++
 lib/Kconfig.ubsan          | 49 +++++++++++++++++++++----
 lib/Makefile               |  2 +
 lib/ubsan.c                | 47 +++++++++++++-----------
 mm/kasan/report.c          | 10 ++++-
 scripts/Makefile.ubsan     | 16 ++++++--
 8 files changed, 172 insertions(+), 33 deletions(-)

-- 
2.20.1