/usr/lib/openhpi/libslave.so is in openhpi-plugin-slave 3.6.1-3.1build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/openhpi/libslave.so.3.6.1
/usr/lib/openhpi/libslave.so.3.6.1