/usr/ is in multipath-tools-boot 0.7.4-2ubuntu3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/
/usr/share/
/usr/share/bug/
/usr/share/bug/multipath-tools-boot/
/usr/share/bug/multipath-tools-boot/script
/usr/share/doc/multipath-tools-boot/
/usr/share/doc/multipath-tools-boot/copyright
/usr/share/initramfs-tools/
/usr/share/initramfs-tools/hooks/
/usr/share/initramfs-tools/hooks/multipath
/usr/share/initramfs-tools/scripts/
/usr/share/initramfs-tools/scripts/init-top/
/usr/share/initramfs-tools/scripts/init-top/multipath
/usr/share/initramfs-tools/scripts/local-bottom/
/usr/share/initramfs-tools/scripts/local-bottom/multipath
/usr/share/initramfs-tools/scripts/local-premount/
/usr/share/initramfs-tools/scripts/local-premount/multipath
/usr/share/lintian/
/usr/share/lintian/overrides/
/usr/share/lintian/overrides/multipath-tools-boot
/usr/share/doc/multipath-tools-boot/NEWS.Debian.gz
/usr/share/doc/multipath-tools-boot/changelog.Debian.gz