Comment 3 for bug 1836971

I installed 4.15.0-56 from -proposed and ran some CPU stress tests and
everything was stable and no problems detected.

The kernel was also installed onto a few machines from the production hadoop
cluster which experienced extremely high cpu load, and the kernel is stable, with
no CPU lockups in sight.

Since this is also an upstream -stable patch, and we have good test results from
the hadoop cluster which was suffering the issue, I am happy to mark this as
verified.