K 10
svn:author
V 3
kib
K 8
svn:date
V 27
2016-11-07T10:55:56.957204Z
K 7
svn:log
V 336
vn_fullpath1() checked VV_ROOT and then unreferenced
vp->v_mount->mnt_vnodecovered unlocked.  This allowed unmount to race.
Lock vnode after we noticed the VV_ROOT flag.  See comments for
explanation why unlocked check for the flag is considered safe.

Reported and tested by:	avg
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week

END