Messages in this thread Patch in this message | | | From | Paul Lawrence <> | Subject | [PATCH v2 5/5] kasan: add compiler support for clang | Date | Wed, 29 Nov 2017 13:50:50 -0800 |
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For now we can hard-code ASAN ABI level 5, since historical clang builds can't build the kernel anyway. We also need to emulate gcc's __SANITIZE_ADDRESS__ flag, or memset() calls won't be instrumented.
Signed-off-by: Greg Hackmann <ghackmann@google.com> Signed-off-by: Paul Lawrence <paullawrence@google.com>
--- include/linux/compiler-clang.h | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/include/linux/compiler-clang.h b/include/linux/compiler-clang.h index 3b609edffa8f..d02a4df3f473 100644 --- a/include/linux/compiler-clang.h +++ b/include/linux/compiler-clang.h @@ -19,3 +19,11 @@ #define randomized_struct_fields_start struct { #define randomized_struct_fields_end }; + +/* all clang versions usable with the kernel support KASAN ABI version 5 */ +#define KASAN_ABI_VERSION 5 + +/* emulate gcc's __SANITIZE_ADDRESS__ flag */ +#if __has_feature(address_sanitizer) +#define __SANITIZE_ADDRESS__ +#endif -- 2.15.0.531.g2ccb3012c9-goog
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