Re: 3.10.16 cgroup css_set_lock deadlock

2013-11-15 Thread Tejun Heo
Hello, On Fri, Nov 15, 2013 at 09:53:14AM -0500, Don Morris wrote: > Are we getting some other thread from while_each_task() > repeatedly keeping us in the loop? Or is there something > else going on? The gut instinct is that calling something > like while_each_task() on an exiting thread would ei

Re: 3.10.16 cgroup css_set_lock deadlock

2013-11-15 Thread Don Morris
On 11/15/2013 03:19 AM, Tejun Heo wrote: > On Thu, Nov 14, 2013 at 05:25:29PM -0600, Shawn Bohrer wrote: >> In trying to reproduce the cgroup_mutex deadlock I reported earlier >> in https://lkml.org/lkml/2013/11/11/574 I believe I encountered a >> different issue that I'm also unable to understand.

Re: 3.10.16 cgroup css_set_lock deadlock

2013-11-15 Thread Tejun Heo
On Thu, Nov 14, 2013 at 05:25:29PM -0600, Shawn Bohrer wrote: > In trying to reproduce the cgroup_mutex deadlock I reported earlier > in https://lkml.org/lkml/2013/11/11/574 I believe I encountered a > different issue that I'm also unable to understand. This machine > started out reporting some sof