/usr/lib/x86_64-linux-gnu/libpapi.so is in libpapi-dev 5.3.0-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libpapi.so.5.3.0.0
/usr/lib/x86_64-linux-gnu/libpapi.so.5.3.0.0