nullfs in 4.10

[Eirik Oeverby]

Hi,

Since upgrading to 4.10-ish (cvsup), nullfs (mount_null) causes my 
jailing host to panic and reboot very frequently. I've been using nullfs 
for about a year now, up until and including 4.9 and beyond, and I have 
never had problems with it. It has been heavily used, among other things 
to mount the host ports tree into all jails (10+), etc.

Anyone got any idea what's happening? Someone mentioned on -CURRENT that 
nullfs has been the victim of some pretty hefty bitrot lately, so 
perhaps that's the reason? In any case - in its current form it does not 
belong anywhere near a -STABLE release.

Wbr,
/Eirik