netdev - Re: [PATCH] 6lowpan: fix lockdep splats

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Message-Id: <20140210.175156.1760225535255103785.davem@davemloft.net>
Date:	Mon, 10 Feb 2014 17:51:56 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	alex.aring@...il.com, netdev@...r.kernel.org
Subject: Re: [PATCH] 6lowpan: fix lockdep splats

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Mon, 10 Feb 2014 11:42:35 -0800

> From: Eric Dumazet <edumazet@...gle.com>
> 
> When a device ndo_start_xmit() calls again dev_queue_xmit(),
> lockdep can complain because dev_queue_xmit() is re-entered and the
> spinlocks protecting tx queues share a common lockdep class.
> 
> Same issue was fixed for bonding/l2tp/ppp in commits 
> 
> 0daa2303028a6 ("[PATCH] bonding: lockdep annotation")
> 49ee49202b4ac ("bonding: set qdisc_tx_busylock to avoid LOCKDEP splat")
> 23d3b8bfb8eb2 ("net: qdisc busylock needs lockdep annotations ")
> 303c07db487be ("ppp: set qdisc_tx_busylock to avoid LOCKDEP splat ")
> 
> Reported-by: Alexander Aring <alex.aring@...il.com>
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> Tested-by: Alexander Aring <alex.aring@...il.com>

Applied, thanks Eric.
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