Re: [PATCH] sched: CPU hotplug race vs. set_cpus_allowed()

[Ingo Molnar]

* Kirill Korotaev <dev@xxxxxxxxxx> wrote:

> Looks like there is a race between set_cpus_allowed() and 
> move_task_off_dead_cpu(). __migrate_task() doesn't report any err 
> code, so task can be left on its runqueue if its cpus_allowed mask 
> changed so that dest_cpu is not longer a possible target. Also, 
> chaning cpus_allowed mask requires rq->lock being held.
> 
> Signed-Off-By: Kirill Korotaev <dev@xxxxxxxxxx>

good one!

Acked-by: Ingo Molnar <mingo@xxxxxxx>

	Ingo
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