Synopsis: Removal of usb serial Device with session (eg tip) attached panics system Responsible-Changed-From-To: freebsd-usb->kib Responsible-Changed-By: kib Responsible-Changed-When: Wed Apr 2 10:00:04 UTC 2008 Responsible-Changed-Why: Take. http://www.freebsd.org/cgi/query-pr.cgi?pr=122287