diff options
| author | Andrey Konovalov <andreyknvl@google.com> | 2018-04-20 14:55:52 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-08-15 18:14:42 +0200 |
| commit | 50bed434ad9c0d1d41a4b617935ac28c3fc778b8 (patch) | |
| tree | 57ce30c68bf92eccb68d4b179a343d9d0304e7ae /include/linux/compiler-clang.h | |
| parent | 2106b21a8a59acd74cf5e473f71e75fdf03e3b99 (diff) | |
kasan: add no_sanitize attribute for clang builds
commit 12c8f25a016dff69ee284aa3338bebfd2cfcba33 upstream.
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.
[andreyknvl@google.com: 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 <andreyknvl@google.com>
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Cc: Andrey Konovalov <andreyknvl@google.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Paul Lawrence <paullawrence@google.com>
Cc: Sandipan Das <sandipan@linux.vnet.ibm.com>
Cc: Kees Cook <keescook@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Sodagudi Prasad <psodagud@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/compiler-clang.h')
| -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 01225b0059b1..21c88a7ac23b 100644 --- a/include/linux/compiler-clang.h +++ b/include/linux/compiler-clang.h @@ -16,6 +16,9 @@ */ #define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__) +#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 |