From: Andrey Ryabinin <aryabinin@virtuozzo.com>
To: Dmitry Vyukov <dvyukov@google.com>,
mark.rutland@arm.com, peterz@infradead.org, mingo@redhat.com,
will.deacon@arm.com, hpa@zytor.com
Cc: Andrew Morton <akpm@linux-foundation.org>,
kasan-dev@googlegroups.com, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, x86@kernel.org
Subject: Re: [PATCH v3 6/7] asm-generic: add KASAN instrumentation to atomic operations
Date: Fri, 16 Jun 2017 19:08:36 +0300 [thread overview]
Message-ID: <52c19a08-0aaa-8ed3-1bca-782bf9cfbe90@virtuozzo.com> (raw)
In-Reply-To: <116e9ee125e74b1fbb35244c845cec1a5ec89355.1496743523.git.dvyukov@google.com>
On 06/06/2017 01:11 PM, Dmitry Vyukov wrote:
> 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 <dvyukov@google.com>
> Cc: Mark Rutland <mark.rutland@arm.com>
> Cc: Peter Zijlstra <peterz@infradead.org>
> Cc: Will Deacon <will.deacon@arm.com>,
> Cc: Andrew Morton <akpm@linux-foundation.org>,
> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>,
> Cc: Ingo Molnar <mingo@redhat.com>,
> Cc: kasan-dev@googlegroups.com
> Cc: linux-mm@kvack.org
> Cc: linux-kernel@vger.kernel.org
> Cc: x86@kernel.org
> ---
Reviewed-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
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next prev parent reply other threads:[~2017-06-16 16:06 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <cover.1496743523.git.dvyukov@google.com>
2017-06-06 10:11 ` [PATCH v3 2/7] x86: use s64* for old arg of atomic64_try_cmpxchg() Dmitry Vyukov
2017-06-16 15:41 ` Andrey Ryabinin
2017-06-06 10:11 ` [PATCH v3 3/7] asm-generic: add atomic-instrumented.h Dmitry Vyukov
2017-06-16 15:43 ` Andrey Ryabinin
2017-06-06 10:11 ` [PATCH v3 4/7] x86: switch atomic.h to use atomic-instrumented.h Dmitry Vyukov
2017-06-16 15:54 ` Andrey Ryabinin
2017-06-17 9:16 ` Dmitry Vyukov
2017-06-06 10:11 ` [PATCH v3 5/7] kasan: allow kasan_check_read/write() to accept pointers to volatiles Dmitry Vyukov
2017-06-16 15:54 ` Andrey Ryabinin
2017-06-06 10:11 ` [PATCH v3 6/7] asm-generic: add KASAN instrumentation to atomic operations Dmitry Vyukov
2017-06-16 16:08 ` Andrey Ryabinin [this message]
2017-06-06 10:11 ` [PATCH v3 7/7] asm-generic, x86: add comments for atomic instrumentation Dmitry Vyukov
2017-06-16 16:29 ` Andrey Ryabinin
2017-06-17 9:21 ` Dmitry Vyukov
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