Messages in this thread | | | From | Kees Cook <> | Subject | [PATCH 0/4 v5] fortify: Add Clang support | Date | Tue, 1 Feb 2022 16:30:29 -0800 |
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Hi,
So, after looking at v4 at little longer I decided that it is just too invasive. After spending time researching the primary issue that needed to be worked around (__builtin_object_size(p, 1) not working from inlines), I got some help from gbiv to use some Clang-specific attributes to get the same effect.
I think the result is much less invasive, and it even lets us easily expand size verification coverage into non-inlines if we ever want to.
Please take a look. :)
-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: - rewritten to use Clang attributes
Kees Cook (4): Compiler Attributes: Add Clang's __pass_object_size Compiler Attributes: Add __overloadable Compiler Attributes: Add __diagnose_as fortify: Add Clang support
include/linux/compiler_attributes.h | 29 ++++++++++++++++ include/linux/fortify-string.h | 52 ++++++++++++++++++++--------- security/Kconfig | 2 +- 3 files changed, 67 insertions(+), 16 deletions(-)
-- 2.30.2
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