On Sat, May 17, 2014 at 12:18:06AM +0800, Lai Jiangshan wrote: > so the scheduler/set_cpus_allowed_ptr()/cpu_active_mask should be the first > place to fix.
I'm not arguing about that, not to mention that this is userspace exposed and nobody protects that. But I was expecting kernel stuff that calls it on hotplug to be serialized thusly, but apparently not so.
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