diff -urN linux/mm/page_alloc.c linux-wli/mm/page_alloc.c
--- linux/mm/page_alloc.c	Sat Mar 16 00:08:43 2002
+++ linux-wli/mm/page_alloc.c	Sat Mar 16 00:09:24 2002
@@ -407,6 +407,8 @@
 	 * any data we would want to cache.
 	 */
 	zone = zonelist->zones;
+	if (*zone == NULL)
+		return;
 	min = 1UL << order;
 	for (;;) {
 		zone_t *z = *(zone++);