This file is indexed.

/usr/lib/linux-tools/4.4.0-42-lowlatency/perf is in linux-tools-4.4.0-42-lowlatency 4.4.0-42.62~14.04.1.

This file is owned by root:root, with mode 0o777.

It is a symlink to /usr/lib/linux-tools/4.4.0-42-lowlatency/../../linux-lts-xenial-tools-4.4.0-42/perf