The instructions say:
For Andriod Marshmallow: lunch kvim-user-32
For Andriod Nougat: lunch kvim-user-64
Problem is solved. I added "user" on Android.mk and root was work on Marshmallow!
Are You used "userdebug" on your Vim_Marshmallow_Root_170121?
PS: I rebuild nougat after to added "user" on Android.mk. Root is work on Nougat too!!!