linux-kernel - Re: [RFC v6][PATCH 0/9] Kernel based checkpoint/restart

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Message-Id: <1224523032.1848.119.camel@nimitz>
Date:	Mon, 20 Oct 2008 10:17:12 -0700
From:	Dave Hansen <dave@...ux.vnet.ibm.com>
To:	David Newall <davidn@...idnewall.com>
Cc:	Peter Chubb <peterc@...ato.unsw.edu.au>,
	Oren Laadan <orenl@...columbia.edu>,
	Daniel Lezcano <dlezcano@...ibm.com>,
	Cedric Le Goater <clg@...ibm.com>, jeremy@...p.org,
	arnd@...db.de, containers@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Alexander Viro <viro@...iv.linux.org.uk>,
	"H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrey Mirkin <major@...nvz.org>
Subject: Re: [RFC v6][PATCH 0/9] Kernel based checkpoint/restart

On Fri, 2008-10-17 at 17:00 +1030, David Newall wrote:
> > The strace/gdb example is *really* hard; but for vfork, you just wait
> > until it's over. The interval between vfork and exec/exit should be
> > short enough not to affect the overall time for a checkpoint
> 
> A malicious user could trivially exploit that.

You mean a malicious user could prevent a checkpoint from occurring by
doing this?

There are going to be a lot of those for a long while. :)

-- Dave

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