On Tue, Nov 5, 2013 at 5:27 PM, David Rientjes <rientjes@google.com> wrote:

> On Tue, 5 Nov 2013, Luigi Semenzato wrote:
>
> > It's not enough to hold a reference to the task struct, because it can
> > still be taken out of the circular list of threads.  The RCU
> > assumptions don't hold in that case.
> >
>
> Could you please post a proper bug report that isolates this at the cause?
>

We've been running into this issue on Chrome OS. crbug.com/256326 has
additional
details.  The issue manifests itself as a soft lockup.

The kernel we've been seeing this on is 3.8.

We have a pretty consistent repro currently.  Happy to try out other
suggestions
for a fix.


>
> Thanks.
>



-- 
Sameer