Copyright for kcmp.2:

Copyright (C) 2012, Cyrill Gorcunov <gorcunov@openvz.org>
and Copyright (C) 2012, Michael Kerrisk <mtk.manpages@gmail.com>

License for kcmp.2:

Permission is granted to make and distribute verbatim copies of this
manual provided the copyright notice and this permission notice are
preserved on all copies.

Permission is granted to copy and distribute modified versions of
this manual under the conditions for verbatim copying, provided that
the entire resulting derived work is distributed under the terms of
a permission notice identical to this one.

Since the Linux kernel and libraries are constantly changing, this
manual page may be incorrect or out-of-date.  The author(s) assume
no responsibility for errors or omissions, or for damages resulting
from the use of the information contained herein.  The author(s) may
not have taken the same level of care in the production of this
manual, which is licensed free of charge, as they might when working
professionally.

Formatted or processed versions of this manual, if unaccompanied by
the source, must acknowledge the copyright and authors of this work.