On Tue, 2014-05-27 at 15:52 -0400, Steven Rostedt wrote:
> As Peter Zijlstra told me, we have the following path:
>
> do_exit()
> exit_itimers()
> itimer_delete()
> spin_lock_irqsave(&timer->it_lock, &flags);
> timer_delete_hook(timer);
> kc->timer_del(timer) := posix_cpu_timer_del()
> put_task_struct()
> __put_task_struct()
> task_numa_free()
> spin_lock(&grp->lock);
>
>
> Which means that task_numa_free() can be called with interrupts
> disabled, which means that we should not be using spin_lock_irq() but
> spin_lock_irqsave() instead. Otherwise we are enabling interrupts while
> holding an interrupt unsafe lock!
>
> Link:
> http://lkml.kernel.org/r/[email protected]
>
> Signed-off-by: Steven Rostedt <[email protected]>
> ---
Your patch was mangled it seems...
Fixes: 60e69eed85bb ("sched/numa: Fix task_numa_free() lockdep splat")
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