Andrew Pruski notes an important bugfix in SQL Server 2016 CU1:
SQL Server 2016 CU1 has been released and one thing I noticed was: –
FIX: Canceling a backup task crashes SQL Server 2014 or 2016
That’s pretty nasty, when I originally clicked on the link I was expecting to see detailed a pretty precise set of circumstances in which that bug can occur but no no, apparently not. Cancelling any backup task can lead to this happening.
Andrew then argues in favor of waiting for SPs before deploying new versions of software, having been burned on it in the past. I don’t agree with that philosophy; regardless, I recommend reading his post.