diff --git a/kernel/resource.c b/kernel/resource.c
index 3ae2f56cc79defc5bdfa7f69f2736f89a2fcea0e..2f1a85c23e8bd91ba24cf2d2ae8de08de38f87cc 100644
--- a/kernel/resource.c
+++ b/kernel/resource.c
@@ -214,6 +214,12 @@ static int __release_resource(struct resource *old, bool release_child)
 {
 	struct resource *tmp, **p, *chd;
 
+	if (!old->parent) {
+		WARN(old->sibling, "sibling but no parent");
+		if (old->sibling)
+			return -EINVAL;
+		return 0;
+	}
 	p = &old->parent->child;
 	for (;;) {
 		tmp = *p;