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From: "Serge E. Hallyn" <serge-A9i7LUbDfNHQT0dZR+AlfA@public.gmane.org>
To: Matt Helsley <matthltc-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
Cc: Venkatesh Pallipadi
	<venki-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>,
	linux-s390-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	Peter Zijlstra
	<a.p.zijlstra-/NLkJaSkS4VmR6Xm/wNWPw@public.gmane.org>,
	Shailabh Nagar
	<nagar1234-xthvdsQ13ZrQT0dZR+AlfA@public.gmane.org>,
	John stultz <johnstul-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>,
	containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
	Heiko Carstens
	<heiko.carstens-tA70FqPdS9bQT0dZR+AlfA@public.gmane.org>,
	Oleg Nesterov <oleg-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	Balbir Singh
	<balbir-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>,
	Thomas Gleixner <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>,
	Martin Schwidefsky
	<schwidefsky-tA70FqPdS9bQT0dZR+AlfA@public.gmane.org>,
	Andrew Morton
	<akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>,
	holzheu-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org,
	Ingo Molnar <mingo-X9Un+BFzKDI@public.gmane.org>,
	Suresh Siddha
	<suresh.b.siddha-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Subject: Re: [RFC][PATCH 00/10] taskstats: Enhancements for precise accounting
Date: Sat, 25 Sep 2010 13:19:28 -0500	[thread overview]
Message-ID: <20100925181928.GA19611@hallyn.com> (raw)
In-Reply-To: <20100923221139.GI23839-52DBMbEzqgQ/wnmkkaCWp/UQ3DHhIser@public.gmane.org>

Quoting Matt Helsley (matthltc-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org):
> I don't think even "root" can see/use pids outside its namespace (without

Just to be clear on this, you're right in what you say, but if a task in a child
pidns still has access to the /proc mount of the parent pidns, then it can see
the pids in there, and get information from them, i.e. /proc/pid/maps.  So
in that sense, some people could misinterpret "see/use pids" and think you
weren't right.

-serge

  parent reply	other threads:[~2010-09-25 18:19 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <1285249681.1837.28.camel@holzheu-laptop>
2010-09-23 20:11 ` [RFC][PATCH 00/10] taskstats: Enhancements for precise accounting Andrew Morton
     [not found]   ` <20100923131136.356075f4.akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2010-09-23 22:11     ` Matt Helsley
2010-09-24  9:10     ` Michael Holzheu
     [not found]   ` <20100923221139.GI23839@count0.beaverton.ibm.com>
     [not found]     ` <20100923221139.GI23839-52DBMbEzqgQ/wnmkkaCWp/UQ3DHhIser@public.gmane.org>
2010-09-24 12:39       ` Michael Holzheu
2010-09-25 18:19       ` Serge E. Hallyn [this message]
     [not found]   ` <1285319415.2179.116.camel@holzheu-laptop>
2010-09-24 18:50     ` Andrew Morton
     [not found]       ` <20100924115002.fcb4385a.akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2010-09-27  9:18         ` Michael Holzheu
     [not found]       ` <1285579127.2116.62.camel@holzheu-laptop>
2010-09-27 20:02         ` Andrew Morton
     [not found]         ` <20100927130256.5d9a3db8.akpm@linux-foundation.org>
     [not found]           ` <20100927130256.5d9a3db8.akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2010-09-28  8:17             ` Balbir Singh
2010-09-27 10:49     ` Balbir Singh

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