From: Paul Lawrence <paullawrence@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>,
Paul Lawrence <paullawrence@google.com>
Subject: [PATCH v2 5/5] kasan: add compiler support for clang
Date: Wed, 29 Nov 2017 13:50:50 -0800 [thread overview]
Message-ID: <20171129215050.158653-6-paullawrence@google.com> (raw)
In-Reply-To: <20171129215050.158653-1-paullawrence@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>
Signed-off-by: Paul Lawrence <paullawrence@google.com>
---
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
--
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next prev parent reply other threads:[~2017-11-29 21:51 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-29 21:50 [PATCH v2 0/5] kasan: support alloca, LLVM Paul Lawrence
2017-11-29 21:50 ` [PATCH v2 1/5] kasan: support alloca() poisoning Paul Lawrence
2017-11-30 8:26 ` Dmitry Vyukov
2017-11-30 8:29 ` Dmitry Vyukov
2017-11-29 21:50 ` [PATCH v2 2/5] kasan: Add tests for alloca poisonong Paul Lawrence
2017-11-30 8:30 ` Dmitry Vyukov
2017-11-29 21:50 ` [PATCH v2 3/5] kasan: added functions for unpoisoning stack variables Paul Lawrence
2017-11-30 8:31 ` Dmitry Vyukov
2017-11-29 21:50 ` [PATCH v2 4/5] kasan: support LLVM-style asan parameters Paul Lawrence
2017-11-30 8:33 ` Dmitry Vyukov
2017-11-30 16:36 ` Andrey Ryabinin
2017-11-29 21:50 ` Paul Lawrence [this message]
2017-11-30 8:34 ` [PATCH v2 5/5] kasan: add compiler support for clang Dmitry Vyukov
2017-11-30 16:45 ` Andrey Ryabinin
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