From 5144f8a8dfd7b3681f0a2b5bf599a210b2315018 Mon Sep 17 00:00:00 2001 From: Marco Elver Date: Thu, 4 Jun 2020 07:58:11 +0200 Subject: compiler_types.h: Add __no_sanitize_{address,undefined} to noinstr Adds the portable definitions for __no_sanitize_address, and __no_sanitize_undefined, and subsequently changes noinstr to use the attributes to disable instrumentation via KASAN or UBSAN. Reported-by: syzbot+dc1fa714cb070b184db5@syzkaller.appspotmail.com Signed-off-by: Marco Elver Signed-off-by: Peter Zijlstra (Intel) Acked-by: Miguel Ojeda Link: https://lore.kernel.org/lkml/000000000000d2474c05a6c938fe@google.com/ --- include/linux/compiler-clang.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux/compiler-clang.h') diff --git a/include/linux/compiler-clang.h b/include/linux/compiler-clang.h index ee37256ec8bd..5e55302e3bf6 100644 --- a/include/linux/compiler-clang.h +++ b/include/linux/compiler-clang.h @@ -33,6 +33,14 @@ #define __no_sanitize_thread #endif +#if __has_feature(undefined_behavior_sanitizer) +/* GCC does not have __SANITIZE_UNDEFINED__ */ +#define __no_sanitize_undefined \ + __attribute__((no_sanitize("undefined"))) +#else +#define __no_sanitize_undefined +#endif + /* * Not all versions of clang implement the the type-generic versions * of the builtin overflow checkers. Fortunately, clang implements -- cgit