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Subject: Re: [GIT PULL rcu/next] RCU commits for 3.1
From: Peter Zijlstra <peterz@infradead.org>
To: paulmck@linux.vnet.ibm.com
Cc: Stephane Eranian <eranian@google.com>, Li Zefan <lizf@cn.fujitsu.com>,
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        Paul Turner <pjt@google.com>
Date: Mon, 07 Nov 2011 18:11:06 +0100
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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().