systemd version the issue has been seen with

239

Used distribution

ubuntu 18.10

Expected behaviour you didn't see

systems should have parsed the mount directory as /tmp/foo\rbar

Unexpected behaviour you saw

systemd apparently parsed mountinfo data as /tmp/foo, representing inexistent mount point.

Steps to reproduce the problem

mkdir "$(echo -e foo\\rbar)"
sudo mount -t tmpfs tmpfs foo^Mbar/
systemctl list-units | grep tmp-foo.mount