The following commit looks suspicious. I don't know where I can find a patch:
overlayfs: allow with shiftfs as underlay https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1846272
The following commit looks suspicious. I don't know where I can find a patch:
overlayfs: allow with shiftfs as underlay /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/1846272
https:/