From: Paul Lawrence <paullawrence@xxxxxxxxxx> Subject: kasan: add compiler support for clang Patch series "kasan: support alloca, LLVM", v4. This patch (of 5): 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. Link: http://lkml.kernel.org/r/20171204191735.132544-2-paullawrence@xxxxxxxxxx Signed-off-by: Greg Hackmann <ghackmann@xxxxxxxxxx> Signed-off-by: Paul Lawrence <paullawrence@xxxxxxxxxx> Acked-by: Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx> Cc: Alexander Potapenko <glider@xxxxxxxxxx> Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx> Cc: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx> Cc: Matthias Kaehlcke <mka@xxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- include/linux/compiler-clang.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff -puN include/linux/compiler-clang.h~kasan-add-compiler-support-for-clang include/linux/compiler-clang.h --- a/include/linux/compiler-clang.h~kasan-add-compiler-support-for-clang +++ a/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 _ -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
