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Message-ID: <CAGXu5j+CFmdPQd_u6=C6ew0Y-j6ihUN7yN1GpJO6V=x2_Q6kRA@mail.gmail.com>
Date: Thu, 28 Mar 2019 09:52:09 -0700
From: Kees Cook <keescook@...omium.org>
To: Joel Fernandes <joel@...lfernandes.org>
Cc: Jann Horn <jannh@...gle.com>, "Eric W. Biederman" <ebiederm@...ssion.com>,
LKML <linux-kernel@...r.kernel.org>,
Android Kernel Team <kernel-team@...roid.com>,
Kernel Hardening <kernel-hardening@...ts.openwall.com>,
Andrew Morton <akpm@...ux-foundation.org>, Matthew Wilcox <willy@...radead.org>,
Michal Hocko <mhocko@...e.com>, Oleg Nesterov <oleg@...hat.com>,
"Reshetova, Elena" <elena.reshetova@...el.com>
Subject: Re: [PATCH] Convert struct pid count to refcount_t
On Thu, Mar 28, 2019 at 7:37 AM Joel Fernandes <joel@...lfernandes.org> wrote:
> Kees can you describe more the race you had in mind?
I just didn't see any barriers, so it seemed racey to me.
> Also note to the on looker, the original patch I sent is not wrong, that
> still applies and is correct. We are just discussing here any possible issues
> with the *existing* code.
Correct. And akpm has (correctly) taken this for -mm.
--
Kees Cook
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