/lib/modules/3.16.0-51-generic/vdso/ is in linux-image-3.16.0-51-generic 3.16.0-51.69~14.04.1.
This file is owned by root:root, with mode 0o755.
..
/lib/modules/3.16.0-51-generic/vdso/.build-id/
/lib/modules/3.16.0-51-generic/vdso/.build-id/27/
/lib/modules/3.16.0-51-generic/vdso/.build-id/27/0fbd805984d30ba7d6e782f646be45481e932d.debug
/lib/modules/3.16.0-51-generic/vdso/.build-id/35/
/lib/modules/3.16.0-51-generic/vdso/.build-id/35/368306c63ab0f70f851583b4949b5232a8f6de.debug
/lib/modules/3.16.0-51-generic/vdso/.build-id/7b/
/lib/modules/3.16.0-51-generic/vdso/.build-id/7b/c8876cc2344338b53a5992c31164f02f844f0a.debug
/lib/modules/3.16.0-51-generic/vdso/.build-id/7e/
/lib/modules/3.16.0-51-generic/vdso/.build-id/7e/aa732b55e58abb19722740f25d5a56640f9a42.debug
/lib/modules/3.16.0-51-generic/vdso/.build-id/9b/
/lib/modules/3.16.0-51-generic/vdso/.build-id/9b/0047f4e802e884fd4f1d4bf694b50d617cba2c.debug
/lib/modules/3.16.0-51-generic/vdso/vdso32-int80.so
/lib/modules/3.16.0-51-generic/vdso/vdso32-syscall.so
/lib/modules/3.16.0-51-generic/vdso/vdso32-sysenter.so
/lib/modules/3.16.0-51-generic/vdso/vdso64.so
/lib/modules/3.16.0-51-generic/vdso/vdsox32.so