I've succeeded to reproduce the behaviour described by this ticket. One shall perform the following steps to reproduce it:
```
# unshare -m
# echo foo > foo; touch bar baz quux
# mount -B foo bar
# mount -B bar baz
# grep foo /proc/self/mountinfo
56 38 8:7 /tmp/foo /tmp/bar ...
57 38 8:7 /tmp/foo /tmp/baz ...
I've succeeded to reproduce the behaviour described by this ticket. One shall perform the following steps to reproduce it: mountinfo
```
# unshare -m
# echo foo > foo; touch bar baz quux
# mount -B foo bar
# mount -B bar baz
# grep foo /proc/self/
56 38 8:7 /tmp/foo /tmp/bar ...
57 38 8:7 /tmp/foo /tmp/baz ...
# rm foo mountinfo
# grep foo /proc/self/
56 38 8:7 /tmp/foo//deleted /tmp/bar ...
57 38 8:7 /tmp/foo//deleted /tmp/baz ...
```