/usr/lib/python2.7/dist-packages/pypy/sandbox/rpython/tool/killsubprocess.py is in python-pypy.sandbox 2.2.1+dfsg-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/pypy/sandbox/rpython/tool/../../../../../../../share/pyshared/pypy/sandbox/rpython/tool/killsubprocess.py