linux-kernel - Re: [PATCH 2/3] perf: Use CAP_SYS_ADMIN with perf_event

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Message-ID: <20190716084744.GB22317@krava>
Date:   Tue, 16 Jul 2019 10:47:44 +0200
From:   Jiri Olsa <jolsa@...hat.com>
To:     Igor Lubashev <ilubashe@...mai.com>
Cc:     linux-kernel@...r.kernel.org,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        linux-arm-kernel@...ts.infradead.org,
        James Morris <jmorris@...ei.org>
Subject: Re: [PATCH 2/3] perf: Use CAP_SYS_ADMIN with perf_event_paranoid
 checks

On Tue, Jul 02, 2019 at 08:10:04PM -0400, Igor Lubashev wrote:
> The kernel is using CAP_SYS_ADMIN instead of euid==0 to override
> perf_event_paranoid check. Make perf do the same.

I see another geteuid check in __cmd_ftrace,
perhaps we should cover this one as well

jirka