/usr/src/glibc/debian/patches/kfreebsd/ is in eglibc-source 2.19-0ubuntu6.
This file is owned by root:root, with mode 0o755.
..
/usr/src/glibc/debian/patches/kfreebsd/local-config_h_in.patch
/usr/src/glibc/debian/patches/kfreebsd/local-fbtl-depends.diff
/usr/src/glibc/debian/patches/kfreebsd/local-fbtl.diff
/usr/src/glibc/debian/patches/kfreebsd/local-getaddrinfo-freebsd-kernel.diff
/usr/src/glibc/debian/patches/kfreebsd/local-grantpt.diff
/usr/src/glibc/debian/patches/kfreebsd/local-initgroups-order.diff
/usr/src/glibc/debian/patches/kfreebsd/local-memusage_no_mremap.diff
/usr/src/glibc/debian/patches/kfreebsd/local-no-pldd.diff
/usr/src/glibc/debian/patches/kfreebsd/local-nscd-no-sockcloexec.diff
/usr/src/glibc/debian/patches/kfreebsd/local-nscd-nosendfile-fix.diff
/usr/src/glibc/debian/patches/kfreebsd/local-scripts.diff
/usr/src/glibc/debian/patches/kfreebsd/local-sys_queue_h.diff
/usr/src/glibc/debian/patches/kfreebsd/local-sysdeps.diff
/usr/src/glibc/debian/patches/kfreebsd/local-undef-glibc.diff
/usr/src/glibc/debian/patches/kfreebsd/submitted-auxv.diff
/usr/src/glibc/debian/patches/kfreebsd/submitted-waitid.diff