locking/atomic, asm-generic: Add KASAN instrumentation to atomic operations

KASAN uses compiler instrumentation to intercept all memory accesses. But it does
not see memory accesses done in assembly code. One notable user of assembly code
is atomic operations. Frequently, for example, an atomic reference decrement is
the last access to an object and a good candidate for a racy use-after-free.

Add manual KASAN checks to atomic operations.

Signed-off-by: Dmitry Vyukov <[email protected]>
Cc: Andrew Morton <[email protected]>,
Cc: Andrey Ryabinin <[email protected]>,
Cc: Linus Torvalds <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Will Deacon <[email protected]>,
Cc: [email protected]
Cc: [email protected]
Link: http://lkml.kernel.org/r/2fa6e7f0210fd20fe404e5b67e6e9213af2b69a1.1517246437.git.dvyukov@google.com
Signed-off-by: Ingo Molnar <[email protected]>

0 files changed, 0 insertions, 0 deletions