linux-hardening - [PATCH v7 0/8] fortify: Add Clang support

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Date:   Tue,  8 Feb 2022 14:53:42 -0800
From:   Kees Cook <keescook@...omium.org>
To:     Kees Cook <keescook@...omium.org>
Cc:     Miguel Ojeda <ojeda@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Nathan Chancellor <nathan@...nel.org>,
        George Burgess IV <gbiv@...gle.com>,
        linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org,
        llvm@...ts.linux.dev
Subject: [PATCH v7 0/8] fortify: Add Clang support

Hi,

This is the updated series for getting Clang to work with
CONFIG_FORTIFY_SOURCE. We went around a few times since v6 on dealing
with -ffreestanding (thank you Nick for figuring out the root cause),
and are dropping X86_32 support until the associated Clang bug is fixed.

I also split up the last patch, since it was doing a bunch of separate
changes, which seemed better as separate patches.

Thanks!

-Kees

v1: https://lore.kernel.org/linux-hardening/20210727205855.411487-61-keescook@chromium.org/
v2: https://lore.kernel.org/linux-hardening/20210818060533.3569517-64-keescook@chromium.org/
v3: https://lore.kernel.org/linux-hardening/20211213223331.135412-18-keescook@chromium.org/
v4: https://lore.kernel.org/linux-hardening/20220130182204.420775-1-keescook@chromium.org/
v5: https://lore.kernel.org/linux-hardening/20220202003033.704951-1-keescook@chromium.org/
v6: https://lore.kernel.org/linux-hardening/20220203173307.1033257-1-keescook@chromium.org/
v7:
 - split last patch into separate logical change patches
 - drop X86_32 support for now


Kees Cook (8):
  fortify: Replace open-coded __gnu_inline attribute
  Compiler Attributes: Add __pass_object_size for Clang
  Compiler Attributes: Add __overloadable for Clang
  Compiler Attributes: Add __diagnose_as for Clang
  fortify: Make pointer arguments const
  fortify: Use __diagnose_as() for better diagnostic coverage
  fortify: Make sure strlen() may still be used as a constant expression
  fortify: Add Clang support

 include/linux/compiler_attributes.h | 39 +++++++++++++++++++
 include/linux/fortify-string.h      | 58 +++++++++++++++++++++--------
 security/Kconfig                    |  5 ++-
 3 files changed, 85 insertions(+), 17 deletions(-)

-- 
2.30.2