diff --git a/kernel/sched.c b/kernel/sched.c
index 3cb94fa..213cad5 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -7767,7 +7767,7 @@
 		ndoms_cur = 0;
 		doms_new = &fallback_doms;
 		cpus_andnot(doms_new[0], cpu_online_map, cpu_isolated_map);
-		dattr_new = NULL;
+		WARN_ON_ONCE(dattr_new);
 	}
 
 	/* Build new domains */