On Tue 09-07-13 15:19:21, azurIt wrote: [...] > Now i realized that i forgot to remove UID from that cgroup before > trying to remove it, so cgroup cannot be removed anyway (we are using > third party cgroup called cgroup-uid from Andrea Righi, which is able > to associate all user's processes with target cgroup). Look here for > cgroup-uid patch: > https://www.develer.com/~arighi/linux/patches/cgroup-uid/cgroup-uid-v8.patch > > ANYWAY, i'm 101% sure that 'tasks' file was empty and 'under_oom' was > permanently '1'. This is really strange. Could you post the whole diff against stable tree you are using (except for grsecurity stuff and the above cgroup-uid patch)? Btw. the bellow patch might help us to point to the exit path which leaves wait_on_memcg without mem_cgroup_oom_synchronize: --- diff --git a/kernel/exit.c b/kernel/exit.c index e6e01b9..ad472e0 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -895,6 +895,7 @@ NORET_TYPE void do_exit(long code) profile_task_exit(tsk); + WARN_ON(current->memcg_oom.wait_on_memcg); WARN_ON(blk_needs_flush_plug(tsk)); if (unlikely(in_interrupt())) -- Michal Hocko SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe cgroups" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
