I've done a fresh install of Ubuntu 14.04 on a physical machine and a virtual machine and after the first reboot (and also at random times) on the screen I get a bad taint message for XFS and BTRFS modules.
I don't currently have any XFS or BTRFS FS's but would like to.
Can someone tell me what this means, if it is safe to use the system like this, and if there is a way to stop these error messages?