From mboxrd@z Thu Jan  1 00:00:00 1970
From: Peter Zijlstra <peterz@infradead.org>
Subject: Re: [PATCH 06/15] kernel: convert perf_event_context.refcount from
 atomic_t to refcount_t
Date: Fri, 7 Jul 2017 11:27:45 +0200
Message-ID: <20170707092745.3bxg3omd5pbly6rd@hirez.programming.kicks-ass.net>
References: <1499418269-3686-1-git-send-email-elena.reshetova@intel.com>
 <1499418269-3686-7-git-send-email-elena.reshetova@intel.com>
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To: Elena Reshetova <elena.reshetova@intel.com>
Cc: linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, linux-audit@redhat.com, linux-fsdevel@vger.kernel.org, gregkh@linuxfoundation.org, viro@zeniv.linux.org.uk, tj@kernel.org, mingo@redhat.com, hannes@cmpxchg.org, lizefan@huawei.com, acme@kernel.org, alexander.shishkin@linux.intel.com, eparis@redhat.com, akpm@linux-foundation.org, arnd@arndb.de, luto@kernel.org, keescook@chromium.org, Hans Liljestrand <ishkamiel@gmail.com>, David Windsor <dwindsor@gmail.com>

On Fri, Jul 07, 2017 at 12:04:20PM +0300, Elena Reshetova wrote:
> refcount_t type and corresponding API should be
> used instead of atomic_t when the variable is used as
> a reference counter. This allows to avoid accidental
> refcounter overflows that might lead to use-after-free
> situations.
> 
> Signed-off-by: Elena Reshetova <elena.reshetova@intel.com>
> Signed-off-by: Hans Liljestrand <ishkamiel@gmail.com>
> Signed-off-by: Kees Cook <keescook@chromium.org>
> Signed-off-by: David Windsor <dwindsor@gmail.com>

That's an invalid SoB chain.. can't do anything with these patches.