linux-kernel - [PATCH v3 0/6] ubsan: Split out bounds checker

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Message-Id: <20200116012321.26254-1-keescook@chromium.org>
Date:   Wed, 15 Jan 2020 17:23:15 -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>,
        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 v3 0/6] ubsan: Split out bounds checker

This splits out the bounds checker so it can be individually used. This
is expected to be 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

v3:
 - use UBSAN menuconfig (will)
 - clean up ubsan report titles (dvyukov)
 - fix ubsan/kasan "panic" handling
 - add Acks
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