linux-kernel - Re: [RFC v2 2/3] procfs: add hidepid= and gid= mount options

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Message-ID: <20111208192143.GB9794@albatros>
Date:	Thu, 8 Dec 2011 23:21:43 +0400
From:	Vasiliy Kulikov <segoon@...nwall.com>
To:	Hugh Dickins <hughd@...gle.com>
Cc:	kernel-hardening@...ts.openwall.com,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org,
	Alexey Dobriyan <adobriyan@...il.com>,
	Al Viro <viro@...iv.linux.org.uk>,
	"H. Peter Anvin" <hpa@...or.com>, Greg KH <greg@...ah.com>,
	Theodore Tso <tytso@....edu>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	James Morris <jmorris@...ei.org>,
	Oleg Nesterov <oleg@...hat.com>
Subject: Re: [RFC v2 2/3] procfs: add hidepid= and gid= mount options

Hi Hugh,

On Mon, Dec 05, 2011 at 14:55 -0800, Hugh Dickins wrote:
> On Sat, 19 Nov 2011, Vasiliy Kulikov wrote:
> > This patch adds support of mount options to restrict access to
> > /proc/PID/ directories.  The default backward-compatible "relaxed"
> > behaviour is left untouched.
> 
> This patch, in 3.2.0-rc3-next-20111202, leaks tasks: watch
> while :; do ps; grep KernelStack /proc/meminfo; sleep 1; done

Thank you very much for the report!

Unfortunately, I have no time to look at it now, will try to debug the
issue these weekends.

Thanks,

-- 
Vasiliy Kulikov
http://www.openwall.com - bringing security into open computing environments
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