linux-kernel - Re: rcu: qs related lockup on boot

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Message-ID: <51E43EE2.6020602@oracle.com>
Date:	Mon, 15 Jul 2013 14:26:42 -0400
From:	Sasha Levin <sasha.levin@...cle.com>
To:	paulmck@...ux.vnet.ibm.com
CC:	dipankar@...ibm.com, LKML <linux-kernel@...r.kernel.org>,
	peterz@...radead.org
Subject: Re: rcu: qs related lockup on boot

On 07/12/2013 05:15 PM, Paul E. McKenney wrote:
> Might be we figured out a new way to deadlock RCU and the scheduler,
> but just in case you rediscovered an old way, could you please try this
> patch from Peter Zijlstra?
>
> http://www.mail-archive.com/linux-kernel@vger.kernel.org/msg464708.html
>
> If that doesn't help and you don't have lockdep enabled, could you
> please enable it?

I've been unable to reproduce it again with or without the patch.

I'll update when it shows up again.


Thanks,
Sasha
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