Please pick this fix for 4.4, 4.9, and 4.14 stable branches:
commit 7690e25302dc7d0cd42b349e746fe44b44a94f2b Author: Goldwyn Rodrigues rgoldwyn@suse.com Date: Sun Dec 3 21:14:12 2017 -0600
dm flakey: check for null arg_name in parse_features()
Ben.