diff options
| author | Paul Lawrence <paullawrence@google.com> | 2018-02-07 02:36:03 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-02-07 05:32:42 +0300 |
| commit | 53a98ed73b848432a51631346b02049bb7fa039d (patch) | |
| tree | f923b316690f5fd0064f5e6a968acf82c33b1420 | |
| parent | 0e410e158e5baa1300bdf678cea4f4e0cf9d8b94 (diff) | |
| download | linux-53a98ed73b848432a51631346b02049bb7fa039d.tar.xz | |
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@google.com
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Signed-off-by: Paul Lawrence <paullawrence@google.com>
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | include/linux/compiler-clang.h | 8 |
1 files changed, 8 insertions, 0 deletions
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 |