From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-it0-f65.google.com ([209.85.214.65]:37551 "EHLO mail-it0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751500AbdLAVg7 (ORCPT ); Fri, 1 Dec 2017 16:36:59 -0500 Received: by mail-it0-f65.google.com with SMTP id d137so3979795itc.2 for ; Fri, 01 Dec 2017 13:36:59 -0800 (PST) From: Paul Lawrence Subject: [PATCH v3 1/5] kasan: add compiler support for clang Date: Fri, 1 Dec 2017 13:36:39 -0800 Message-Id: <20171201213643.2506-2-paullawrence@google.com> In-Reply-To: <20171201213643.2506-1-paullawrence@google.com> References: <20171201213643.2506-1-paullawrence@google.com> Sender: linux-kbuild-owner@vger.kernel.org List-ID: To: Andrey Ryabinin , Alexander Potapenko , Dmitry Vyukov , Masahiro Yamada 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 , Paul Lawrence 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 Signed-off-by: Paul Lawrence --- include/linux/compiler-clang.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/linux/compiler-clang.h b/include/linux/compiler-clang.h index 3b609edffa8f..d02a4df3f473 100644 --- a/include/linux/compiler-clang.h +++ b/include/linux/compiler-clang.h @@ -19,3 +19,11 @@ #define randomized_struct_fields_start struct { #define randomized_struct_fields_end }; + +/* 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 -- 2.15.0.531.g2ccb3012c9-goog