K 10
svn:author
V 5
markj
K 8
svn:date
V 27
2018-11-24T16:58:34.458627Z
K 7
svn:log
V 494
Ensure that knotes do not get registered when KQ_CLOSING is set.

KQ_CLOSING is set before draining the knotes associated with a kqueue,
so we must ensure that new knotes are not added after that point.  In
particular, some kernel facilities may register for events on behalf
of a userspace process and race with a close of the kqueue.

PR:		228858
Reviewed by:	kib
Tested by:	pho
MFC after:	3 days
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D18316

END