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From: Kees Cook <keescook@chromium.org>
To: John Dias <joaodias@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>,
	LKML <linux-kernel@vger.kernel.org>,
	Ingo Molnar <mingo@redhat.com>,
	Arnaldo Carvalho de Melo <acme@kernel.org>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Min Chong <mchong@google.com>
Subject: Re: [PATCH] perf: protect group_leader from races that cause ctx
Date: Mon, 9 Jan 2017 15:16:58 -0800	[thread overview]
Message-ID: <CAGXu5jKhgD=kKsC=hUM7uMBG8zzoD4UfTZ0YAkkcn+54TU+RSQ@mail.gmail.com> (raw)
In-Reply-To: <CA+njcd30PbC=V=rcWwNOGE1FKxfb5=Fq6_q++Pkh58HgZ98BnQ@mail.gmail.com>

On Sat, Jan 7, 2017 at 8:29 AM, John Dias <joaodias@google.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

  reply	other threads:[~2017-01-09 23:17 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-01-05 23:14 Kees Cook
2017-01-06  9:32 ` Peter Zijlstra
2017-01-06 13:14   ` Peter Zijlstra
2017-01-06 20:39     ` Kees Cook
2017-01-07 16:29       ` John Dias
2017-01-09 23:16         ` Kees Cook [this message]
2017-01-10  8:46       ` Peter Zijlstra
2017-01-10 10:16       ` Ingo Molnar
2017-01-10 23:54         ` Kees Cook
2017-01-14 12:28     ` [tip:perf/urgent] perf/core: Fix concurrent sys_perf_event_open() vs. 'move_group' race tip-bot for Peter Zijlstra

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