Subject: Re: [RFC] macvlan: add tap device backend

From: Arnd Bergmann <[email-masked]>
Date: Mon, 14 Dec 2009 16:40:13 +0100

On Monday 14 December 2009, Patrick McHardy wrote:
> > +     classdev = device_create(macvtap_class, &dev->dev, devt,
> > +                              dev, "tap%d", dev->ifindex);
> > +     if (IS_ERR(classdev)) {
> > +             err = PTR_ERR(classdev);
> > +             macvtap_del_queues(dev);
> > +             macvlan_dellink(dev, NULL);
> 
> I think this may cause a double free since macvlan_dellink() will
> free the device and rtnl_newlink() will free it again on error.

Ah, right. I've changed this part a few times now, but I think introduced
the same bug again in the current version. I'll send out what I have now
if you want to take another look.

	Arnd