From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: LOCKDEP complaints in l2tp_xmit_skb()
Date: Thu, 28 Jun 2012 10:57:42 +0200
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References: <20120627111152.GA2531@raven>
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To: Tom Parkin <tparkin@katalix.com>,
	David Miller <davem@davemloft.net>
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On Thu, 2012-06-28 at 08:56 +0200, Eric Dumazet wrote:

> [PATCH] net: Qdisc busylock gets its own lockdep class
> 
> Tom Parkin reported following LOCKDEP splat :
..
> 
> Instruct lockdep that each Qdisc busylock is independant, or else
> bonding or various tunnels can trigger a splat.
> 
> Reported-by: Tom Parkin <tparkin@katalix.com>
> Signed-off-by: Eric Dumazet <edumazet@google.com>
> ---

I reproduced the bug using a bond0 device, adding a qdisc on it,
(one Qdisc on bond0, and a Qdisc on the slave too)

Problem with this patch is I have following message :

BUG: key ffff88..... not in .data!

No more LOCKDEP splat, but patch not good as is.