netdev - Re: + oops-in-drivers-net-shaperc.patch added to -mm tree

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Message-Id: <20070126.191045.48529536.davem@davemloft.net>
Date:	Fri, 26 Jan 2007 19:10:45 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	herbert@...dor.apana.org.au
Cc:	linux-kernel@...r.kernel.org, akpm@...l.org, deweerdt@...e.fr,
	netdev@...r.kernel.org, frederik.deweerdt@...il.com,
	shemminger@...l.org
Subject: Re: + oops-in-drivers-net-shaperc.patch added to -mm tree

From: Herbert Xu <herbert@...dor.apana.org.au>
Date: Sat, 27 Jan 2007 11:45:05 +1100

> David Miller <davem@...emloft.net> 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?

For the shaper case it's OK, because once a shaper is
associated it's ->dev never goes back to NULL.

In general, yes it's a problem :-/
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