core: fix oneshot service resource control

Oneshot services's cgroup is removed when the service
exits. An assert is hit otherwise.

diff --git a/src/core/manager.c b/src/core/manager.c
index 3dffbe259bd863f5c77afa66f0b341d2bf9431c5..e7a3a2a193179f01def2633ebfd9edfc75039905 100644 (file)
--- a/src/core/manager.c
+++ b/src/core/manager.c
@@ -2542,7 +2542,8 @@ void manager_check_finished(Manager *m) {
         }
 
         SET_FOREACH(u, m->startup_units, i)
-                cgroup_context_apply(unit_get_cgroup_context(u), unit_get_cgroup_mask(u), u->cgroup_path, manager_state(m));
+                if (u->cgroup_path)
+                        cgroup_context_apply(unit_get_cgroup_context(u), unit_get_cgroup_mask(u), u->cgroup_path, manager_state(m));
 
         bus_manager_send_finished(m, firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec);