linux-kernel - Re: [64/66] Phonet: disable network namespace support

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Date:	Fri, 22 Oct 2010 22:22:33 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	Rémi Denis-Courmont 
	<remi.denis-courmont@...ia.com>, Greg KH <gregkh@...e.de>
Cc:	linux-kernel@...r.kernel.org, stable@...nel.org,
	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	"David S. Miller" <davem@...emloft.net>
Subject: Re: [64/66] Phonet: disable network namespace support

On Fri, 2010-10-22 at 11:35 -0700, Greg KH wrote:
> 2.6.32-stable review patch.  If anyone has any objections, please let us know.
> 
> ------------------
> 
> From: Rémi Denis-Courmont <remi.denis-courmont@...ia.com>
> 
> [Solved differently upstream]
> 
> Network namespace in the Phonet socket stack causes an OOPS when a
> namespace is destroyed. This occurs as the loopback exit_net handler is
> called after the Phonet exit_net handler, and re-enters the Phonet
> stack. I cannot think of any nice way to fix this in kernel <= 2.6.32.
> 
> For lack of a better solution, disable namespace support completely.
> If you need that, upgrade to a newer kernel.
[...]

I've had one report today that the bug is still reproducible in the
current Debian kernel, which includes this change.  Rémi, how have you
tested this fix?

Ben.

-- 
Ben Hutchings
Once a job is fouled up, anything done to improve it makes it worse.

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