On Wed 26-08-20 21:16:28, xunlei wrote: [...] > oom_reaper also can't get scheduled because of 1-cpu, and the mutex > uses might_sleep() which is noop in case of "CONFIG_PREEMPT_VOLUNTARY is > not set" I mentioned in the commit log. OK, I see. I have clearly missed the 1cpu configuration. Sorry about that. Thanks for bearing with me. -- Michal Hocko SUSE Labs