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Date: Wed, 03 Aug 2016 08:53:21 -0400
From: Daniel Micay <>
To:, Kees Cook <>
Cc: Peter Zijlstra <>, Jeff Vander Stoep
 <>,  Ingo Molnar <>, Arnaldo Carvalho de
 Melo <>, Alexander Shishkin
 <>, ""
 <>, LKML <>, Jonathan
 Corbet <>, "Eric W. Biederman" <>
Subject: Re: Re: [PATCH 1/2] security, perf: allow
 further restriction of perf_event_open

Having this in Yama would also make it probable that there would be a
security-centric default. It would end up wiping out unprivileged perf
events access on distributions using Yama for ptrace_scope unless they
make the explicit decision to disable it. Having the perf subsystem
extend the existing perf_event_paranoid sysctl leaves the control over
the upstream default in the hands of the perf subsystem, not LSMs.
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