Should have included this in the post.
I remember reading somewhere that there are processes in place for a patent submitter to deprecate a patent and forcefully render its content public domain. Am I remembering incorrectly? If not, then that would surely be a sign of goodwill as it would render the given content unpatentable.
Unfortunately I can't check this but your logic is correct only if the unit price charged by the electricity company is the same as that which they return to the customer in the case where the customer produced more electricity than they used.
The exploit maps 0x00000000 to userspace using pulseaudio, this prevents the segfault.
It isn't easy being the parent of a six-year-old. However, it's a pretty small price to pay for having somebody around the house who understands computers.