On 4/6/07, Srivatsa Vaddagiri <vatsa@xxxxxxxxxx> wrote: > On Fri, Apr 06, 2007 at 04:32:24PM -0700, menage@xxxxxxxxxx wrote: > > +static int attach_task(struct container *cont, struct task_struct *tsk) > > { > > [snip] > > > + task_lock(tsk); > > You need to check here if task state is PF_EXITING and fail with > -ESRCH if so? Otherwise we risk breaking refcount on > init_container_group. > Yes, I think you're right; I've now changed it to this in my tree: task_lock(tsk); if (tsk->flags & PF_EXITING) { task_unlock(tsk); put_container_group(newcg); return -ESRCH; } rcu_assign_pointer(tsk->containers, newcg); task_unlock(tsk); Thanks, Paul _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers