linux-kernel - Re: rcu_preempt detected stalls.

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Message-ID: <543DDD5E.9080602@oracle.com>
Date:	Tue, 14 Oct 2014 22:35:10 -0400
From:	Sasha Levin <sasha.levin@...cle.com>
To:	Dave Jones <davej@...hat.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	paulmck@...ux.vnet.ibm.com, htejun@...il.com
Subject: Re: rcu_preempt detected stalls.

On 10/13/2014 01:35 PM, Dave Jones wrote:
> oday in "rcu stall while fuzzing" news:
> 
> INFO: rcu_preempt detected stalls on CPUs/tasks:
> 	Tasks blocked on level-0 rcu_node (CPUs 0-3): P766 P646
> 	Tasks blocked on level-0 rcu_node (CPUs 0-3): P766 P646
> 	(detected by 0, t=6502 jiffies, g=75434, c=75433, q=0)

I've complained about RCU stalls couple days ago (in a different context)
on -next. I guess whatever causing them made it into Linus's tree?

https://lkml.org/lkml/2014/10/11/64


Thanks,
Sasha
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