netdev - Re: [PATCH] net: fix a lockdep splat

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Message-ID: <1285220577.2380.72.camel@edumazet-laptop>
Date:	Thu, 23 Sep 2010 07:42:57 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Jarek Poplawski <jarkao2@...il.com>
Cc:	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>,
	David Miller <davem@...emloft.net>,
	linux-fsdevel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH] net: fix a lockdep splat

Le jeudi 23 septembre 2010 à 00:43 +0200, Eric Dumazet a écrit :

> 
> [PATCH v2] net: fix a lockdep splat
> 
...
> lockdep is not happy with this, as reported by Tetsuo Handa
> 
> It seems only way to deal with this is to use read_lock_bh(callbacklock)
> everywhere.
> 
> Thanks to Jarek for pointing a bug in my first attempt and suggesting
> this solution.
> 
> Reported-by: Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
> Signed-off-by: Eric Dumazet <eric.dumazet@...il.com>
> CC: Jarek Poplawski <jarkao2@...il.com>

Tested-by: Eric Dumazet <eric.dumazet@...il.com>

I tested it on my machine and could not reproduce the lockdep splat.



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