This was fixed in kernel 4.20 so users of more recent distros are unaffected, and we'll see if we can deploy a workaround to help users of older systems.
https://github.com/torvalds/linux/commit/1d8ca3be86ebc6a38dad8236f45c7a9c61681e78
It is interesting though that we find ourselves working around a bug we did not introduce triggered by code we do not control. 5/6