K 10
svn:author
V 3
jhb
K 8
svn:date
V 27
2020-01-08T18:59:23.395891Z
K 7
svn:log
V 394
Add a reference count to cryptodev sessions.

This prevents use-after-free races with crypto requests (which may
sleep) and CIOCFSESSION as well as races from current CIOCFSESSION
requests.

admbugs:	949
Reported by:	Yuval Kanarenstein <yuvalk@ssd-disclosure.com>
Reviewed by:	cem
MFC after:	1 week
Sponsored by:	Chelsio Communications
Differential Revision:	https://reviews.freebsd.org/D23077

END