/usr/lib/linux-tools/4.4.0-1015-kvm/perf is in linux-tools-4.4.0-1015-kvm 4.4.0-1015.20.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/linux-tools/4.4.0-1015-kvm/../../linux-kvm-tools-4.4.0-1015/perf