Essentially you have a busy box, these errors are more common on gen3 devices running 6.7.2. It can also happen on boxes running HF5 or less, where the superq process may coredump several times. Rebooting the device will certainly free up the swap, however if any of the previous issues are true then it will most likely come back.
You may want to consider calling into support to determine the most likely cause.
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