tree 359383086b15aa2d27e543d51865886d51d2bb23
parent b787f68c36d49bb1d9236f403813641efa74a031
author Eric W. Biederman <ebiederm@xmission.com> 1431121010 -0500
committer Eric W. Biederman <ebiederm@xmission.com> 1431190550 -0500

mnt: Fix fs_fully_visible to verify the root directory is visible

This fixes a dumb bug in fs_fully_visible that allows proc or sys to
be mounted if there is a bind mount of part of /proc/ or /sys/ visible.

Cc: stable@vger.kernel.org
Reported-by: Eric Windisch <ewindisch@docker.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>