Hello, Please consider including mainline commit da362b09e42ee0bcaf0356afee6078b4f324baff in the next v3.13.y-ckt release. It was included in the mainline tree as of v3.19-rc1. It has been tested and confirmed to resolve http://bugs.launchpad.net/bugs/1541313 . commit da362b09e42ee0bcaf0356afee6078b4f324baff Author: Eric W. Biederman <ebiederm@xxxxxxxxxxxx> Date: Tue Oct 7 12:19:53 2014 -0700 umount: Do not allow unmounting rootfs. Sincerely, Joseph Salisbury -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html