rcu_preempt self-detected stall on CPU from 4.5-rc3, since 3.17

From: Ross Green
Date: Tue Feb 09 2016 - 05:12:09 EST


Continued testing with the latest linux-4.5-rc3 release.

Please find attached a copy of traces from dmesg:

There is a lot more debug and trace data so hopefully this will shed
some light on what might be happening here.

My testing remains run a series of simple benchmarks, let that run to
completion and then leave the system idle away with just a few daemons
running.

the self detected stalls in this instance turned up after a days run time.
There were NO heavy artificial computational loads on the machine.



Regards,

Ross Green

Attachment: dmesg-4.5-rc3
Description: Binary data