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Date: Wed, 7 Sep 2011 15:23:01 +0400
From: Vasiliy Kulikov <>
To: Tejun Heo <>
Cc: Cyrill Gorcunov <>,
	Andrew Morton <>,
	"Kirill A. Shutemov" <>,,,, Nathan Lynch <>,,
	Oren Laadan <>,
	Daniel Lezcano <>,
	Glauber Costa <>,
	James Bottomley <>,
	Alexey Dobriyan <>,
	Al Viro <>,
	Pavel Emelyanov <>
Subject: Re: [patch 2/2] fs, proc: Introduce the /proc/<pid>/map_files/
 directory v6


On Wed, Sep 07, 2011 at 02:33 +0900, Tejun Heo wrote:
> On Tue, Sep 06, 2011 at 09:29:52PM +0400, Vasiliy Kulikov wrote:
> > I agree with you.  I don't think that showing system-global debug
> > information to all users by default is the right thing.  But some people
> > doesn't agree with this point of view:
> > 
> >
> Yeap, I know there are two sides of the discussion but if one takes
> the position that hiding such global debug info is more harmful, it's
> only crazier to hide such information from each individual users of
> the said global facility.  So, let's just forget about information
> leak via freeing or not freeing here.  It's the wrong battle field.

Andrew, are you OK with closing the hole with pid_no_revalidate()
and 0600 /proc/slabinfo?  If so, I feel I have to start this discussion
with people participating in the discussion above: Theodore, Dan, Linus, etc.


Vasiliy Kulikov - bringing security into open computing environments

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