netdev - Re: deadlock in ipv6?

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Message-ID: <20140425073325.GA7050@order.stressinduktion.org>
Date:	Fri, 25 Apr 2014 09:33:25 +0200
From:	Hannes Frederic Sowa <hannes@...essinduktion.org>
To:	Alex Shi <alex.shi@...aro.org>
Cc:	John Stultz <john.stultz@...aro.org>,
	"naresh.kamboju@...aro.org Kamboju" <naresh.kamboju@...aro.org>,
	davem@...emloft.net, netdev@...r.kernel.org,
	Mark Brown <broonie@...aro.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...nel.org>
Subject: Re: deadlock in ipv6?

On Fri, Apr 25, 2014 at 03:05:52PM +0800, Alex Shi wrote:
> [   18.624755]        CPU0
> 
> [   18.627349]        ----
> 
> [   18.629943]   lock(&addrconf_stats->syncp.seq);
> 
> [   18.634735]   <Interrupt>
> 
> [   18.637512]     lock(&addrconf_stats->syncp.seq);
> 

Stable kernel should already carry a fix for this, 43a43b6040165f7
("ipv6: some ipv6 statistic counters failed to disable bh"). Could you give it
a try?

Bye,

  Hannes

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