On Tue, Nov 5, 2013 at 5:27 PM, David Rientjes <rientjes@xxxxxxxxxx> wrote:
On Tue, 5 Nov 2013, Luigi Semenzato wrote:Could you please post a proper bug report that isolates this at the cause?
> 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.
>
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