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| Started by | Greg Hackmann <ghackmann@google.com> |
|---|---|
| First post | 2017-07-07 00:10 +0200 |
| Last post | 2017-07-10 10:50 +0200 |
| Articles | 2 — 2 participants |
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[PATCH 4/4] kasan: add compiler support for clang Greg Hackmann <ghackmann@google.com> - 2017-07-07 00:10 +0200
Re: [PATCH 4/4] kasan: add compiler support for clang Dmitry Vyukov <dvyukov@google.com> - 2017-07-10 10:50 +0200
| From | Greg Hackmann <ghackmann@google.com> |
|---|---|
| Date | 2017-07-07 00:10 +0200 |
| Subject | [PATCH 4/4] kasan: add compiler support for clang |
| Message-ID | <u0n8e-3bI-17@gated-at.bofh.it> |
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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| From | Dmitry Vyukov <dvyukov@google.com> |
|---|---|
| Date | 2017-07-10 10:50 +0200 |
| Message-ID | <u1Cyd-2Hm-3@gated-at.bofh.it> |
| In reply to | #1682749 |
On Fri, Jul 7, 2017 at 12:01 AM, Greg Hackmann <ghackmann@google.com> wrote: > 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 Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
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