Comment 3 for bug 1784535

This also affects linux-kvm for Cosmic, which has the quota modules built in:

$ git grep CONFIG_QUOTA debian.kvm/
debian.kvm/config/config.common.ubuntu:CONFIG_QUOTA=y
debian.kvm/config/config.common.ubuntu:CONFIG_QUOTACTL=y
debian.kvm/config/config.common.ubuntu:CONFIG_QUOTACTL_COMPAT=y
debian.kvm/config/config.common.ubuntu:# CONFIG_QUOTA_DEBUG is not set
debian.kvm/config/config.common.ubuntu:# CONFIG_QUOTA_NETLINK_INTERFACE is not set
debian.kvm/config/config.common.ubuntu:CONFIG_QUOTA_TREE=m

ADT log:
https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-cosmic/cosmic/amd64/l/linux-kvm/20190116_115856_432e7@/log.gz