From: Greg Hackmann <ghackmann@google.com>
To: Andrey Ryabinin <aryabinin@virtuozzo.com>,
Alexander Potapenko <glider@google.com>,
Dmitry Vyukov <dvyukov@google.com>,
Masahiro Yamada <yamada.masahiro@socionext.com>,
Michal Marek <mmarek@suse.com>
Cc: linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com,
linux-mm@kvack.org, linux-kbuild@vger.kernel.org,
Matthias Kaehlcke <mka@chromium.org>,
Michael Davidson <md@google.com>,
Greg Hackmann <ghackmann@google.com>
Subject: [PATCH 4/4] kasan: add compiler support for clang
Date: Thu, 6 Jul 2017 15:01:14 -0700 [thread overview]
Message-ID: <20170706220114.142438-5-ghackmann@google.com> (raw)
In-Reply-To: <20170706220114.142438-1-ghackmann@google.com>
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 <ghackmann@google.com>
---
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
--
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next prev parent reply other threads:[~2017-07-06 22:01 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-06 22:01 [PATCH 0/4] kasan: add clang support Greg Hackmann
2017-07-06 22:01 ` [PATCH 1/4] kasan: support alloca() poisoning Greg Hackmann
2017-07-07 0:09 ` Greg Hackmann
2017-07-10 8:44 ` Dmitry Vyukov
2017-07-13 22:40 ` Greg Hackmann
2017-07-14 6:13 ` Dmitry Vyukov
2017-07-10 10:30 ` Andrey Ryabinin
2017-07-13 22:49 ` Greg Hackmann
2017-07-14 16:52 ` Andrey Ryabinin
2017-07-06 22:01 ` [PATCH 2/4] kasan: added functions for unpoisoning stack variables Greg Hackmann
2017-07-10 8:46 ` Dmitry Vyukov
2017-07-10 10:31 ` Andrey Ryabinin
2017-07-06 22:01 ` [PATCH 3/4] kasan: support LLVM-style asan parameters Greg Hackmann
2017-07-10 8:47 ` Dmitry Vyukov
2017-07-06 22:01 ` Greg Hackmann [this message]
2017-07-10 8:48 ` [PATCH 4/4] kasan: add compiler support for clang Dmitry Vyukov
2017-07-10 10:34 ` Andrey Ryabinin
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