netdev - Re: linux-next: zillions of lockdep whinges in include/net/sock.h:1408

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Date:	Thu, 21 Apr 2016 09:42:12 +0200
From:	Hannes Frederic Sowa <hannes@...essinduktion.org>
To:	Valdis Kletnieks <Valdis.Kletnieks@...edu>,
	"David S. Miller" <davem@...emloft.net>
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: linux-next: zillions of lockdep whinges in include/net/sock.h:1408

Hi,

On Thu, Apr 21, 2016, at 02:30, Valdis Kletnieks wrote:
> linux-next 20160420 is whining at an incredible rate - in 20 minutes of
> uptime, I piled up some 41,000 hits from all over the place (cleaned up
> to skip the CPU and PID so the list isn't quite so long):

Thanks for the report. Can you give me some more details:

Is this an nfs socket? Do you by accident know if this socket went
through xs_reclassify_socket at any point? We do hold the appropriate
locks at that point but I fear that the lockdep reinitialization
confused lockdep.

Thanks,
Hannes