On Sat, Feb 15, 2014 at 03:27:00PM +0100, Oleg Nesterov wrote: > 1. info->q can be already freed if SIGQUEUE_PREALLOC. > > Once get_signal_to_deliver() or any other caller drops ->siglock > another thread can do sys_timer_delete()->sigqueue_free(). How the devil would it find the sucker? It's off the list already. > 2. We need to move do_schedule_next_timer() from dequeue_signal() > here. > > Otherwise ->q can be reused/overwritten by the next send_sigqueue() > right affter ->siglock is dropped. Ditto. We rip them out of queue on collect_signal(); the only thing we do not do is actual __sigqueue_free(). _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
