kasan: Allow kasan_check_read/write() to accept pointers to volatiles
authorDmitry Vyukov <dvyukov@google.com>
Thu, 22 Jun 2017 14:14:17 +0000 (16:14 +0200)
committerIngo Molnar <mingo@kernel.org>
Wed, 26 Jul 2017 11:08:54 +0000 (13:08 +0200)
commitf06e8c584fa0d05312c11ea66194f3d2efb93c21
tree6abbbbf95b2443bed4d23745b8b75ee4e39e334d
parent25547b6b085d8e81e0f67ec6da98342c2b1548d2
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>
include/linux/kasan-checks.h
mm/kasan/kasan.c