On Tue, Jul 17, 2018 at 09:30:17AM -0700, Isaac J. Manjarres wrote: > After cpu_stop_queue_two_works() queues the cpu_stop works > for the stopper threads, it releases the locks held for > both threads, which enables preemption, which allows the > following race condition to occur: Does not apply because an earlier version is already applied. https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/kernel/stop_machine.c?id=9fb8d5dc4b649dd190e1af4ead670753e71bf907 if there still is a problem, please send a new patch that describes the remaining problem.