Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752917AbdGFWCM (ORCPT ); Thu, 6 Jul 2017 18:02:12 -0400 Received: from mail-pf0-f179.google.com ([209.85.192.179]:32945 "EHLO mail-pf0-f179.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752812AbdGFWBq (ORCPT ); Thu, 6 Jul 2017 18:01:46 -0400 From: Greg Hackmann To: Andrey Ryabinin , Alexander Potapenko , Dmitry Vyukov , Masahiro Yamada , Michal Marek Cc: linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, linux-mm@kvack.org, linux-kbuild@vger.kernel.org, Matthias Kaehlcke , Michael Davidson , Greg Hackmann Subject: [PATCH 4/4] kasan: add compiler support for clang Date: Thu, 6 Jul 2017 15:01:14 -0700 Message-Id: <20170706220114.142438-5-ghackmann@google.com> X-Mailer: git-send-email 2.13.2.725.g09c95d1e9-goog In-Reply-To: <20170706220114.142438-1-ghackmann@google.com> References: <20170706220114.142438-1-ghackmann@google.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 896 Lines: 29 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. Signed-off-by: Greg Hackmann --- include/linux/compiler-clang.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/include/linux/compiler-clang.h b/include/linux/compiler-clang.h index d614c5ea1b5e..8153f793b22a 100644 --- a/include/linux/compiler-clang.h +++ b/include/linux/compiler-clang.h @@ -23,3 +23,13 @@ */ #undef inline #define inline inline __attribute__((unused)) notrace + +/* 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 -- 2.13.2.725.g09c95d1e9-goog