/lib/modules/3.19.0-51-generic/vdso/ is in linux-image-3.19.0-51-generic 3.19.0-51.58~14.04.1.
This file is owned by root:root, with mode 0o755.
..
/lib/modules/3.19.0-51-generic/vdso/.build-id/
/lib/modules/3.19.0-51-generic/vdso/.build-id/1c/
/lib/modules/3.19.0-51-generic/vdso/.build-id/1c/362b1c6f84235e2334c75f10eb08b730873364.debug
/lib/modules/3.19.0-51-generic/vdso/.build-id/1c/d43f26b026de5e58530c53a1419f8754af5cbb.debug
/lib/modules/3.19.0-51-generic/vdso/.build-id/88/
/lib/modules/3.19.0-51-generic/vdso/.build-id/88/a39d7efa6ab664628a352787a46041049b3560.debug
/lib/modules/3.19.0-51-generic/vdso/.build-id/b8/
/lib/modules/3.19.0-51-generic/vdso/.build-id/b8/f6071e41f9b45b5ae104e93af799ae3d6fb26f.debug
/lib/modules/3.19.0-51-generic/vdso/.build-id/f2/
/lib/modules/3.19.0-51-generic/vdso/.build-id/f2/eab7772b2e329764288fec84128b98bf7f4111.debug
/lib/modules/3.19.0-51-generic/vdso/vdso32-int80.so
/lib/modules/3.19.0-51-generic/vdso/vdso32-syscall.so
/lib/modules/3.19.0-51-generic/vdso/vdso32-sysenter.so
/lib/modules/3.19.0-51-generic/vdso/vdso64.so
/lib/modules/3.19.0-51-generic/vdso/vdsox32.so