kern/58258: Panic in knote_drop()

[Olivier Houchard]

Synopsis: Panic in knote_drop()

Responsible-Changed-From-To: freebsd-bugs->cognet
Responsible-Changed-By: cognet
Responsible-Changed-When: Mon Nov 3 17:29:09 PST 2003
Responsible-Changed-Why: 
I believe my last commit fixes this, so close the PR.

http://www.freebsd.org/cgi/query-pr.cgi?pr=58258