Hi. I have exactly the same problem. Installed winterbreak on my paperwhite 2. It started to generate dump files. The problem was partly resolved by creating those 2 empty files in the root. But Kindle is still creating indexer_dump files every minute or two. I tried to switch to airplane mode. Didn't help. It's draining battery a lot and my home screen is very messy. Any way to fix that?
https://file.io/rFr79wl2VtBJ