unlabeled_t types for files

[Anamitra Dutta Majumdar]

We have been recently seeing some denials related to one of our files I  ramfs

The audit2allow shows as follows

allow mount_t unlabeled_t:filesystem relabelfrom;
 Our product is based on RHEL6 . We did not see this in the RHEL5 version of our product.

Why would there be files of type unlabeled_t  on the system  with the move to RHEL6?

Thanks,
Anamitra