Re: rcu_preempt self-detected stall on CPU from 4.4-rc4, since 3.17

[Peter Zijlstra]

On Fri, Dec 11, 2015 at 10:17:33PM +1100, Ross Green wrote:
> I have been getting these stalls in kernels going back to 3.17.
> 
> This stall occurs usually under light load but often requires several
> days to show itself. I have not found any simple way to trigger the
> stall. Indeed heavy workloads seems not to show the fault.
> 
> Anyone have any thoughts here?

see lkml.kernel.org/r/564F3DCA.1080907@xxxxxxx
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