On 06/30, Oleg Nesterov wrote: > > But let me send some cleanups first. Plus I believe I found another > stop_machine bug, see the last patch. So I hope these changes make > sense in any case.
The last patch fixes the bug, I think. Say, stop_one_cpu(X) can race with _cpu_down(X)->stop_machine() so that the kernel will crash if this CPU X becomes online again. The window after cpu_stopper_thread() returns and before smpboot_thread() calls ->park() is tiny, but still this is possible afaics. Oleg. -- 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/
