linux-kernel - Re: 2.6.39-rc6-mmotm0506 - another lockdep splat (networking this time)

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Message-Id: <20110509.205851.189693332.davem@davemloft.net>
Date:	Mon, 09 May 2011 20:58:51 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	Valdis.Kletnieks@...edu, akpm@...ux-foundation.org,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: 2.6.39-rc6-mmotm0506 - another lockdep splat (networking this
 time)

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Tue, 10 May 2011 05:47:51 +0200

> [PATCH net-next-2.6] net: fix two lockdep splats
> 
> Commit e67f88dd12f6 (net: dont hold rtnl mutex during netlink dump
> callbacks) switched rtnl protection to RCU, but we forgot to adjust two
> rcu_dereference() lockdep annotations :
> 
> inet_get_link_af_size() or inet_fill_link_af() might be called with
> rcu_read_lock or rtnl held, so use rcu_dereference_rtnl()
> instead of rtnl_dereference()
> 
> Reported-by: Valdis Kletnieks <Valdis.Kletnieks@...edu>
> Signed-off-by: Eric Dumazet <eric.dumazet@...il.com>

Applied, thanks everyone.
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