linux-kernel - Re: [PATCH] perf: protect group_leader from races that cause ctx

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Message-ID: <CAGXu5jKhgD=kKsC=hUM7uMBG8zzoD4UfTZ0YAkkcn+54TU+RSQ@mail.gmail.com>
Date:   Mon, 9 Jan 2017 15:16:58 -0800
From:   Kees Cook <keescook@...omium.org>
To:     John Dias <joaodias@...gle.com>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Min Chong <mchong@...gle.com>
Subject: Re: [PATCH] perf: protect group_leader from races that cause ctx

On Sat, Jan 7, 2017 at 8:29 AM, John Dias <joaodias@...gle.com> wrote:
>> John, are you able to test this solution? IIUC, you've got a reproducer handy?
>
> Yes, I tested against two reproducers. Both were fixed by this solution.

Great! Thanks for testing this.

> Thanks to Kees and Peter for your patience on this.

Peter, can you push your patch into the tree with the adjusted
Reported-by and Cc: stable (and maybe add Tested-by from John)?

Thanks again for working on it!

-Kees

-- 
Kees Cook
Nexus Security