--- linux-2.6.17.11.orig/kernel/module.c	2006-08-23 21:16:33.000000000 +0000
+++ linux-2.6.17.11/kernel/module.c	2006-09-22 05:19:03.000000000 +0000
@@ -998,6 +998,12 @@
 {
 	int err;
 
+	if (!module_subsys.kset.subsys) {
+		printk(KERN_ERR "%s: module_subsys not initialized\n",
+		       mod->name);
+		err = -EINVAL;
+		goto out;
+	}
 	memset(&mod->mkobj.kobj, 0, sizeof(mod->mkobj.kobj));
 	err = kobject_set_name(&mod->mkobj.kobj, "%s", mod->name);
 	if (err)