I'm having the same problem under the 3.11 RC1 kernel. Attached is the results.
** Attachment added: "terminal session" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1200817/+attachment/3739664/+files/linux-3.11-log.txt ** Tags added: kernel-bug-exists-upstream -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1200817 Title: UDF filesystem shows negative disk space used in df command To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1200817/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs