netdev - Re: [PATCH net-2.6.25][NETNS]: Fix race between put_net() and netlink_kernel

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Message-Id: <20080130.193128.136832319.davem@davemloft.net>
Date:	Wed, 30 Jan 2008 19:31:28 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	xemul@...nvz.org
Cc:	den@...nvz.org, netdev@...r.kernel.org, devel@...nvz.org,
	adobriyan@...nvz.org
Subject: Re: [PATCH net-2.6.25][NETNS]: Fix race between put_net() and
 netlink_kernel_create().

From: Pavel Emelyanov <xemul@...nvz.org>
Date: Thu, 24 Jan 2008 16:15:13 +0300

> The comment about "race free view of the set of network 
> namespaces" was a bit hasty. Look (there even can be only 
> one CPU, as discovered by Alexey Dobriyan and Denis Lunev):
 ...
> Instead, I propose to crate the socket inside an init_net
> namespace and then re-attach it to the desired one right
> after the socket is created.
> 
> After doing this, we also have to be careful on error paths
> not to drop the reference on the namespace, we didn't get
> the one on.
> 
> Signed-off-by: Pavel Emelyanov <xemul@...nvz.org>
> Acked-by: Denis Lunev <den@...nvz.org>

Applied, thanks.
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