4.14-stable review patch. If anyone has any objections, please let me know.
------------------ From: Andrey Konovalov <[email protected]> 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. [[email protected]: remove redundant #ifdef CONFIG_KASAN check] Link: http://lkml.kernel.org/r/c79aa31a2a2790f6131ed607c58b0dd45dd62a6c.1523967959.git.andreyk...@google.com Link: http://lkml.kernel.org/r/4ad725cc903f8534f8c8a60f0daade5e3d674f8d.1523554166.git.andreyk...@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]> Cc: Sodagudi Prasad <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- include/linux/compiler-clang.h | 3 +++ 1 file changed, 3 insertions(+) --- a/include/linux/compiler-clang.h +++ b/include/linux/compiler-clang.h @@ -17,6 +17,9 @@ */ #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
