/lib/modules/3.19.0-61-generic/vdso/ is in linux-image-3.19.0-61-generic 3.19.0-61.69~14.04.1.
This file is owned by root:root, with mode 0o755.
..
/lib/modules/3.19.0-61-generic/vdso/.build-id/
/lib/modules/3.19.0-61-generic/vdso/.build-id/0a/
/lib/modules/3.19.0-61-generic/vdso/.build-id/0a/d49f59a2f1aeb2a50e5b30202de57ca08d21dd.debug
/lib/modules/3.19.0-61-generic/vdso/.build-id/5f/
/lib/modules/3.19.0-61-generic/vdso/.build-id/5f/9df8067f5a447d1ca7f9f36fa23d0409f7aecd.debug
/lib/modules/3.19.0-61-generic/vdso/.build-id/89/
/lib/modules/3.19.0-61-generic/vdso/.build-id/89/5c2b1febcee9a15005cd9fa7f410d6b73e1a1a.debug
/lib/modules/3.19.0-61-generic/vdso/.build-id/8d/
/lib/modules/3.19.0-61-generic/vdso/.build-id/8d/06f60166075a647d5096eb4e061eabf4c84716.debug
/lib/modules/3.19.0-61-generic/vdso/.build-id/9c/
/lib/modules/3.19.0-61-generic/vdso/.build-id/9c/978752483db5abe9d30a6ecb527336981eb3ad.debug
/lib/modules/3.19.0-61-generic/vdso/vdso32-int80.so
/lib/modules/3.19.0-61-generic/vdso/vdso32-syscall.so
/lib/modules/3.19.0-61-generic/vdso/vdso32-sysenter.so
/lib/modules/3.19.0-61-generic/vdso/vdso64.so
/lib/modules/3.19.0-61-generic/vdso/vdsox32.so