https://www.theverge.com/circuitbreaker/2017/11/28/16712510/google-pixel-2-reboot-fix-coming

Google’s Pixel 2 and Pixel 2 XL phones haven’t had the smoothest of launches, with screen issues, quality control problems, and audio bugs in some units. Fortunately, Pixel 2 and Pixel 2 XL users will have one less thing to worry about soon, as Google has announced that it has identified a problem causing the phones to randomly reboot. It will be issuing a fix “in the coming weeks,” according to Android Police. That could come either bundled as part of a monthly security update (which sometimes include Pixel fixes) or a future Android software release.

The bug was reported on both Pixel 2 and Pixel 2 XL devices, and according to various forum threads, it resulted in the phones rebooting seemingly at random. So, if you’ve been experiencing this on your own devices, at least you can take solace in the fact that Google has figured out what’s wrong and will be fixing it soon.