Subject: Re: 2.6.35-rc2-git1 - include/linux/cgroup.h:534 invoked rcu_dereference_check() without protection!

From: Peter Zijlstra <[email-masked]>
Date: Wed, 09 Jun 2010 20:15:11 +0200

On Wed, 2010-06-09 at 19:57 +0200, Peter Zijlstra wrote:
> +       /*
> +        * We're not in the pid-hash yet so no cgroup attach races, and the
> +        * cgroup is pinned by the parent running this.
> +        *
> +        * Silence PROVE_RCU.
> +        */ 

Hum,.. not sure that's actually true though, the parent itself is still
susceptible to races afaict..