I was running `xen-create-image` when it failed near the end trying to `umount` the `/tmp/SoMeThInG/proc` mount that it had created. `findmnt` showed me that it was mounted on itself, as was `/proc`!
I got it unmounted with `--lazy`. I'm guessing that the Xen script was merely copying what it saw; the question remaining then is: Why would /proc have been mounted on itself? Anyone seen this before?
