I was testing an installer of my systems, with this i created a lot of files, then deleted them to test again. After a while i noticed that the free space was above the limit.
fs.getFreeSpace(".")should return 1.000.000 instead of 1.000.004.
Not sure how to re-produce this successfully, but a way to do this is to create/write and delete a lot of files in a short time.
Here (http://imgur.com/a/q7pYz) are two screenshots, the first includes the bug and the second works as exspected. (And no, my Command Computers do not magicly have 4 bytes more to use)
This bug is nothing big (who cares about 4 bytes), but it might be exploited in some way.
Edited by Wergat, 21 May 2016 - 12:02 AM.