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