K 10
svn:author
V 6
emaste
K 8
svn:date
V 27
2017-01-16T20:34:42.054886Z
K 7
svn:log
V 364
disambiguate msleep KASSERT diagnostics

Previously "panic: msleep" could happen for a few different reasons.
Break the KASSERTs out into individual cases to identify the failing
condition. Found during the investigation that resulted in r308288.

Reviewed by:	kib, jhb
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D8604

END