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

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Message-ID: <alpine.LSU.2.00.1112051451470.3938@sister.anvils>
Date:	Mon, 5 Dec 2011 14:55:32 -0800 (PST)
From:	Hugh Dickins <hughd@...gle.com>
To:	Vasiliy Kulikov <segooon@...il.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

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

Hugh
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