On Sat, Aug 01, 2015 at 12:57:18PM +0200, Oleg Nesterov wrote: > > > + if (stop_work_pending(stopper1) != stop_work_pending(stopper2)) > > > + goto unlock; > > > > You could DoS/false positive this by running stop_one_cpu() in a loop, > > and thereby 'always' having work pending on one but not the other. > > IIRC no. I am pretty sure stop_one_cpu() doesn't use stopper->stop_work, > only stop_machine() does.
Urgh, I missed you were testing the cpu_stopper::stop_work not the cpu_stopper::works list. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
