There's a bug with ext4 on the new 4.7 kernel -- rare but it happened
here on an ext4 mountpoint (/home /dev/md1 ext4 rw,relatime,data=ordered)
when a new file is created, the "create time" is not properly set.(2014
was written as the create year instead of 2016)
it occured today after I updated to 4.7 so I can only assume it has
something to do with it..
my system here has "mdadm" containers, and perhaps it's possible a set
of conditions allowed this rarity to occur.