linux-kernel - [PATCH v2 0/7] Clean up UBSAN Makefile

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Date:   Wed,  2 Dec 2020 16:44:30 -0800
From:   Kees Cook <keescook@...omium.org>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Kees Cook <keescook@...omium.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Ard Biesheuvel <ardb@...nel.org>,
        Arnd Bergmann <arnd@...db.de>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        Nathan Chancellor <natechancellor@...il.com>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Marco Elver <elver@...gle.com>,
        Randy Dunlap <rdunlap@...radead.org>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        George Popescu <georgepope@...roid.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Peter Oberparleiter <oberpar@...ux.ibm.com>,
        Andrey Ryabinin <aryabinin@...tuozzo.com>,
        clang-built-linux@...glegroups.com, linux-kbuild@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 0/7] Clean up UBSAN Makefile

Hi,

This series attempts to address the issues seen with UBSAN's object-size
sanitizer causing problems under GCC. In the process, the Kconfig and
Makefile are refactored to do all the cc-option calls in the Kconfig.
Additionally start to detangle -Wno-maybe-uninitialized, disable
UBSAN_TRAP under COMPILE_TEST for wider build coverage, and expand the
libusan tests.

Thanks!

-Kees

v2:
- Add reviewed/tested-bys (Nathan Chancellor)
- Reorganize -Wno-maybe-uninitialized changes
- Split up UBSAN_MISC features and document them
- Expand libubsan tests
v1: https://lore.kernel.org/lkml/20201002221527.177500-1-keescook@chromium.org/

Kees Cook (7):
  ubsan: Remove redundant -Wno-maybe-uninitialized
  ubsan: Move cc-option tests into Kconfig
  ubsan: Disable object-size sanitizer under GCC
  ubsan: Disable UBSAN_TRAP for all*config
  ubsan: Enable for all*config builds
  ubsan: Remove UBSAN_MISC in favor of individual options
  ubsan: Expand tests and reporting

 Documentation/dev-tools/ubsan.rst |   1 +
 lib/Kconfig.ubsan                 | 128 +++++++++++++++++++++++++-----
 lib/test_ubsan.c                  |  74 +++++++++++++++--
 scripts/Makefile.ubsan            |  49 ++++--------
 4 files changed, 188 insertions(+), 64 deletions(-)

-- 
2.25.1