summaryrefslogtreecommitdiff
path: root/include/linux/kasan-checks.h
diff options
context:
space:
mode:
authorDmitry Vyukov <dvyukov@google.com>2017-06-22 17:14:17 +0300
committerIngo Molnar <mingo@kernel.org>2017-07-26 14:08:54 +0300
commitf06e8c584fa0d05312c11ea66194f3d2efb93c21 (patch)
tree6abbbbf95b2443bed4d23745b8b75ee4e39e334d /include/linux/kasan-checks.h
parent25547b6b085d8e81e0f67ec6da98342c2b1548d2 (diff)
downloadlinux-f06e8c584fa0d05312c11ea66194f3d2efb93c21.tar.xz
kasan: Allow kasan_check_read/write() to accept pointers to volatiles
Currently kasan_check_read/write() accept 'const void*', make them accept 'const volatile void*'. This is required for instrumentation of atomic operations and there is just no reason to not allow that. Signed-off-by: Dmitry Vyukov <dvyukov@google.com> Reviewed-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Acked-by: Mark Rutland <mark.rutland@arm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: kasan-dev@googlegroups.com Cc: linux-mm@kvack.org Cc: will.deacon@arm.com Link: http://lkml.kernel.org/r/33e5ec275c1ee89299245b2ebbccd63709c6021f.1498140838.git.dvyukov@google.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/kasan-checks.h')
-rw-r--r--include/linux/kasan-checks.h10
1 files changed, 6 insertions, 4 deletions
diff --git a/include/linux/kasan-checks.h b/include/linux/kasan-checks.h
index b7f8aced7870..41960fecf783 100644
--- a/include/linux/kasan-checks.h
+++ b/include/linux/kasan-checks.h
@@ -2,11 +2,13 @@
#define _LINUX_KASAN_CHECKS_H
#ifdef CONFIG_KASAN
-void kasan_check_read(const void *p, unsigned int size);
-void kasan_check_write(const void *p, unsigned int size);
+void kasan_check_read(const volatile void *p, unsigned int size);
+void kasan_check_write(const volatile void *p, unsigned int size);
#else
-static inline void kasan_check_read(const void *p, unsigned int size) { }
-static inline void kasan_check_write(const void *p, unsigned int size) { }
+static inline void kasan_check_read(const volatile void *p, unsigned int size)
+{ }
+static inline void kasan_check_write(const volatile void *p, unsigned int size)
+{ }
#endif
#endif