Merge pull request #3375 from brauner/2020-04-12/fixes

src/lxc/cgroups/cgfsng.c

@@ -2847,6 +2847,9 @@ __cgfsng_ops static bool cgfsng_setup_limits_legacy(struct cgroup_ops *ops,
 	if (!ops->hierarchies)
 		return ret_set_errno(false, EINVAL);
 
+	if (!pure_unified_layout(ops))
+		return log_warn_errno(true, EINVAL, "Ignoring legacy cgroup limits on pure cgroup2 system");
+
 	sorted_cgroup_settings = sort_cgroup_settings(cgroup_settings);
 	if (!sorted_cgroup_settings)
 		return false;