linux-hardening - [PATCH v3 0/5] fortify: Add KUnit tests for runtime overflows

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Date: Fri, 16 Feb 2024 20:48:23 -0800
From: Kees Cook <keescook@...omium.org>
To: linux-hardening@...r.kernel.org
Cc: Kees Cook <keescook@...omium.org>,
	Alexander Lobakin <aleksander.lobakin@...el.com>,
	Andy Shevchenko <andy@...nel.org>,
	Cezary Rojewski <cezary.rojewski@...el.com>,
	Puyou Lu <puyou.lu@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Brendan Higgins <brendan.higgins@...ux.dev>,
	David Gow <davidgow@...gle.com>,
	Nick Desaulniers <ndesaulniers@...gle.com>,
	linux-kernel@...r.kernel.org,
	kunit-dev@...glegroups.com
Subject: [PATCH v3 0/5] fortify: Add KUnit tests for runtime overflows

Hi,

This series is the rest of the v2 series that was half landed last year,
and finally introduces KUnit runtime testing of the CONFIG_FORTIFY_SOURCE
APIs. Additionally FORTIFY failure messages are improved to give more
context about read/write and sizes.

-Kees

v3
 - rebase (goodbye strlcpy)
 - avoid extra macros for replacing fortify_panic() (nick)
 - generally clean up macro usage
 - avoid build warnings when testing known overflow conditions
v2 https://lore.kernel.org/all/20230407192717.636137-10-keescook@chromium.org/
v1 https://lore.kernel.org/lkml/20230405235832.never.487-kees@kernel.org/

Kees Cook (5):
  fortify: Split reporting and avoid passing string pointer
  fortify: Allow KUnit test to build without FORTIFY
  fortify: Provide KUnit counters for failure testing
  fortify: Add KUnit tests for runtime overflows
  fortify: Improve buffer overflow reporting

 arch/arm/boot/compressed/misc.c |   2 +-
 arch/x86/boot/compressed/misc.c |   2 +-
 include/linux/fortify-string.h  | 100 +++--
 lib/Kconfig.debug               |   2 +-
 lib/Makefile                    |   1 +
 lib/fortify_kunit.c             | 662 +++++++++++++++++++++++++++++++-
 lib/string_helpers.c            |  26 +-
 tools/objtool/noreturns.h       |   2 +-
 8 files changed, 761 insertions(+), 36 deletions(-)

-- 
2.34.1