The patch titled
Subject: kasan: add compiler support for clang
has been added to the -mm tree. Its filename is
kasan-add-compiler-support-for-clang.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/kasan-add-compiler-support-for-clang.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/kasan-add-compiler-support-for-clang.patch
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------------------------------------------------------
From: Paul Lawrence <paullawrence@xxxxxxxxxx>
Subject: kasan: add compiler support for clang
Patch series "kasan: support alloca, LLVM", v4.
This patch (of 5):
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.
Link: http://lkml.kernel.org/r/20171204191735.132544-2-paullawrence@xxxxxxxxxx
Signed-off-by: Greg Hackmann <ghackmann@xxxxxxxxxx>
Signed-off-by: Paul Lawrence <paullawrence@xxxxxxxxxx>
Acked-by: Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx>
Cc: Alexander Potapenko <glider@xxxxxxxxxx>
Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Cc: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
Cc: Matthias Kaehlcke <mka@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/compiler-clang.h | 8 ++++++++
1 file changed, 8 insertions(+)
diff -puN include/linux/compiler-clang.h~kasan-add-compiler-support-for-clang include/linux/compiler-clang.h
--- a/include/linux/compiler-clang.h~kasan-add-compiler-support-for-clang
+++ a/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
_
Patches currently in -mm which might be from paullawrence@xxxxxxxxxx are
kasan-add-compiler-support-for-clang.patch
kasan-support-alloca-poisoning.patch
kasan-add-tests-for-alloca-poisoning.patch
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