K 10
svn:author
V 4
wulf
K 8
svn:date
V 27
2020-07-14T21:56:59.967458Z
K 7
svn:log
V 234
linuxkpi: Ignore NULL pointers passed to string parameter of kstr(n)dup

That follows Linux and fixes related drm-kmod-5.3 panic.

Reviewed by:	imp, hselasky
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D25657

END