> Yep. Bug still not fixed in upstream. In our kernel I've plugged it with > this: > > --- a/kernel/sched/core.c > +++ b/kernel/sched/core.c > @@ -2808,8 +2808,9 @@ asmlinkage __visible void schedule_tail(struct > task_struct *prev) > balance_callback(rq); > preempt_enable(); > > - if (current->set_child_tid) > - put_user(task_pid_vnr(current), current->set_child_tid); > + if (current->set_child_tid && > + put_user(task_pid_vnr(current), current->set_child_tid)) > + force_sig(SIGSEGV, current); > } I just verified that with your patch there is no hung processes and I see processes getting SIGSEGV as expected. Thanks! -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>