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| author | Dmitry Vyukov <dvyukov@google.com> | 2017-06-22 16:14:17 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-07-26 13:08:54 +0200 |
| commit | f06e8c584fa0d05312c11ea66194f3d2efb93c21 (patch) | |
| tree | 6abbbbf95b2443bed4d23745b8b75ee4e39e334d /mm/kasan | |
| parent | Merge branch 'WIP.locking/atomics' into locking/core (diff) | |
| download | linux-f06e8c584fa0d05312c11ea66194f3d2efb93c21.tar.xz linux-f06e8c584fa0d05312c11ea66194f3d2efb93c21.zip | |
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 'mm/kasan')
| -rw-r--r-- | mm/kasan/kasan.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/kasan/kasan.c b/mm/kasan/kasan.c index ca11bc4ce205..6f319fb81718 100644 --- a/mm/kasan/kasan.c +++ b/mm/kasan/kasan.c @@ -267,13 +267,13 @@ static void check_memory_region(unsigned long addr, check_memory_region_inline(addr, size, write, ret_ip); } -void kasan_check_read(const void *p, unsigned int size) +void kasan_check_read(const volatile void *p, unsigned int size) { check_memory_region((unsigned long)p, size, false, _RET_IP_); } EXPORT_SYMBOL(kasan_check_read); -void kasan_check_write(const void *p, unsigned int size) +void kasan_check_write(const volatile void *p, unsigned int size) { check_memory_region((unsigned long)p, size, true, _RET_IP_); } |