diff options
| author | Andrey Konovalov <[email protected]> | 2018-04-20 14:55:52 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2018-04-20 17:18:35 -0700 |
| commit | 12c8f25a016dff69ee284aa3338bebfd2cfcba33 (patch) | |
| tree | 3a4f916140a2aad77b9d6ccb9bfe975d7eb91608 | |
| parent | c5157b76869ba98c3a99a1982396437464e131a6 (diff) | |
kasan: add no_sanitize attribute for clang builds
KASAN uses the __no_sanitize_address macro to disable instrumentation of
particular functions. Right now it's defined only for GCC build, which
causes false positives when clang is used.
This patch adds a definition for clang.
Note, that clang's revision 329612 or higher is required.
[[email protected]: remove redundant #ifdef CONFIG_KASAN check]
Link: http://lkml.kernel.org/r/c79aa31a2a2790f6131ed607c58b0dd45dd62a6c.1523967959.git.andreyknvl@google.com
Link: http://lkml.kernel.org/r/4ad725cc903f8534f8c8a60f0daade5e3d674f8d.1523554166.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <[email protected]>
Acked-by: Andrey Ryabinin <[email protected]>
Cc: Alexander Potapenko <[email protected]>
Cc: Dmitry Vyukov <[email protected]>
Cc: David Rientjes <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: David Woodhouse <[email protected]>
Cc: Andrey Konovalov <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Paul Lawrence <[email protected]>
Cc: Sandipan Das <[email protected]>
Cc: Kees Cook <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
| -rw-r--r-- | include/linux/compiler-clang.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/compiler-clang.h b/include/linux/compiler-clang.h index ceb96ecab96e..7d98e263e048 100644 --- a/include/linux/compiler-clang.h +++ b/include/linux/compiler-clang.h @@ -25,6 +25,9 @@ #define __SANITIZE_ADDRESS__ #endif +#undef __no_sanitize_address +#define __no_sanitize_address __attribute__((no_sanitize("address"))) + /* Clang doesn't have a way to turn it off per-function, yet. */ #ifdef __noretpoline #undef __noretpoline |