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From: Seiji A. <sei...@hd...> - 2013-03-15 15:43:14
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Thank you for giving me the feedback. > > So it appears the problem occurs because the other CPUs are not offlined correctly, and still have pending work which may generate > wakeup IPIs to them? Right. > > The fix would be to either offline them properly - or, if we don't want to do that to keep panicking simple, why do we mark them > offline? They aren't really offline in a proper way. To offline cpus properly, it should be done with threads like stop_machine(). But I don't think it is reasonable to kick the threads in panic case. Therefore, I will make a patch keeping cpus online. Also, to inform a panicked cpu that other cpus stopped surely, I will introduce a new cpu_mask like cpu_stopped_mask. Seiji |