linux-kernel - Re: [PATCH v1] perf report: Fix owner error when reading perf.data

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Message-ID: <20151001091031.GA6543@gmail.com>
Date:	Thu, 1 Oct 2015 11:10:31 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	Taeung Song <treeze.taeung@...il.com>
Cc:	Arnaldo Carvalho de Melo <acme@...nel.org>,
	linux-kernel@...r.kernel.org, jolsa@...hat.com,
	namhyung@...nel.org, Ingo Molnar <mingo@...hat.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [PATCH v1] perf report: Fix owner error when reading perf.data


* Taeung Song <treeze.taeung@...il.com> wrote:

> If perf.data file is owned by some user,
> it can't be read even if current user is root.

That's intentional: to keep a malicious local user from passing a perf.data to 
root who does 'perf report' accidentally or in the wrong directory.

root can copy or chown it to himself - or we could add some --really-force flag 
for that.

Thanks,

	Ingo
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