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Date:	Sat, 27 Jan 2007 12:01:46 +1100
From:	Herbert Xu <>
To:	David Miller <>
Subject: Re: + oops-in-drivers-net-shaperc.patch added to -mm tree

On Sat, Jan 27, 2007 at 11:45:05AM +1100, Herbert Xu wrote:
> David Miller <> wrote:
> > 
> > Shaper is actually OK.  None of these hardware header callbacks
> > should be invoked if the device is down.  Yet, this is what is
> > accidently being allowed in the AF_PACKET socket layer.
> Hmm, what if the device goes down after the check?

In fact, the shaper device doesn't even seem to take a ref count of
the device it has attached to.  So that device can go away at any time.
What's more, there are drivers that can change hard_header at run-time

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