kern/176471: [xen] xn driver crash on detach

[linimon at FreeBSD.org]

Old Synopsis: xn driver crash on detach
New Synopsis: [xen] xn driver crash on detach

Responsible-Changed-From-To: freebsd-bugs->freebsd-xen
Responsible-Changed-By: linimon
Responsible-Changed-When: Wed Feb 27 14:54:25 UTC 2013
Responsible-Changed-Why: 
Over to maintainer(s).

http://www.freebsd.org/cgi/query-pr.cgi?pr=176471