K 10
svn:author
V 3
kib
K 8
svn:date
V 27
2020-01-30T19:34:37.506747Z
K 7
svn:log
V 418
Fix a bug in r357199.

Around a generic call to null_nodeget(), there is nothing that would
prevent the unmount of the nullfs mp until we process to the
insmntque1() point.  Calculate the VV_ROOT flag after insmntque1() to
not access mp->mnt_data before we have an exclusively locked vnode
from this mount point on the mp vnode list.

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

END