On 07/28, Paul E. McKenney wrote: > > On Thu, Jul 28, 2011 at 11:08:13AM +1000, NeilBrown wrote: > > > > I disagree. It also requires - by virtue of the use of while_each_thread() - > > that 'g' remains on the list that 't' is walking along. > > Doesn't the following code in the loop body deal with this possibilty? > > /* Exit if t or g was unhashed during refresh. */ > if (t->state == TASK_DEAD || g->state == TASK_DEAD) > goto unlock; This code is completely wrong even if while_each_thread() was fine. I sent the patch but it was ignored. [PATCH] fix the racy check_hung_uninterruptible_tasks()->rcu_lock_break() http://marc.info/?l=linux-kernel&m=127688790019041 Oleg. _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers
