linux-kernel - Re: [PATCH 1/1] veth: don't free priv->status until dev->destructor (v2)

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Message-ID: <20090724124614.6acc5054@nehalam>
Date:	Fri, 24 Jul 2009 12:46:14 -0700
From:	Stephen Hemminger <shemminger@...tta.com>
To:	"Serge E. Hallyn" <serue@...ibm.com>
Cc:	Linux Containers <containers@...ts.osdl.org>,
	Sachin Sant <sachinp@...ibm.com>,
	netdev <netdev@...r.kernel.org>,
	David Miller <davem@...emloft.net>, matthltc@...ibm.com,
	lkml <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/1] veth: don't free priv->status until dev->destructor
 (v2)

On Fri, 26 Jun 2009 11:24:18 -0500
"Serge E. Hallyn" <serue@...ibm.com> wrote:

> Based on the commit msg on ae0e8e82205c903978a79ebf5e31c670b61fa5b4, it looks

>  	ether_setup(dev);
> @@ -306,7 +320,7 @@ static void veth_setup(struct net_device *dev)
>  	dev->netdev_ops = &veth_netdev_ops;
>  	dev->ethtool_ops = &veth_ethtool_ops;
>  	dev->features |= NETIF_F_LLTX;
> -	dev->destructor = free_netdev;
> +	dev->destructor = veth_dev_free;
>

This is still going to oops if sysfs statistics referenced
after module unload because module is unloaded (code is gone)
and veth_dev_free no longer exists.

I'll respin the original patch (using free_netdev) and fix
the statistics complaint.
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