linux-kernel - Re: [GIT PULL rcu/next] RCU commits for 3.1

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Date:	Mon, 07 Nov 2011 18:11:06 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	paulmck@...ux.vnet.ibm.com
Cc:	Stephane Eranian <eranian@...gle.com>,
	Li Zefan <lizf@...fujitsu.com>, Ingo Molnar <mingo@...e.hu>,
	eric.dumazet@...il.com, shaohua.li@...el.com, ak@...ux.intel.com,
	mhocko@...e.cz, alex.shi@...el.com, efault@....de,
	linux-kernel@...r.kernel.org, Paul Turner <pjt@...gle.com>
Subject: Re: [GIT PULL rcu/next] RCU commits for 3.1

On Mon, 2011-11-07 at 08:56 -0800, Paul E. McKenney wrote:
> > > code has a problem.
> > 
> > yeah, task_struct is rcu-freed
> 
> But we are not in an RCU read-side critical section, otherwise the splat
> would not have happened.  Or did I miss a turn in the analysis roadmap
> above? 

I think cgroup code does get_task_struct()/put_task_struct().
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