On Tue, Jun 12, 2018 at 02:00:11PM +0200, Daniel Lezcano wrote:
> +static void __idle_injection_wakeup(struct idle_injection_device *ii_dev)
> +{
> + struct idle_injection_thread *iit;
> + struct cpumask tmp;
> + unsigned int cpu;
> +
> + cpumask_and(&tmp, ii_dev->cpumask, cpu_online_mask);You should not be having a cpumask on the stack. Those things can be ginormous.

