K 10
svn:author
V 3
kib
K 8
svn:date
V 27
2016-05-20T19:50:32.803243Z
K 7
svn:log
V 185
Check for overflow and return EINVAL if detected.  Backport this and
r300305 to i386.

PR:	209661
Reported and reviewed by:	cturt
Sponsored by:	The FreeBSD Foundation
MFC after:	3 days

END