/usr/share/doc/linux-tools-3.13.0-33-lowlatency/changelog.Debian.gz is in linux-tools-3.13.0-33-lowlatency 3.13.0-33.58.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/linux-tools-3.13.0-33-lowlatency/../linux-tools-3.13.0-33/changelog.Debian.gz