--- linux-2.6.28/mm/bootmem.c.orig	2009-01-05 20:42:12.000000000 +0530
+++ linux-2.6.28/mm/bootmem.c	2009-01-05 20:43:53.000000000 +0530
@@ -375,10 +375,14 @@ int __init reserve_bootmem_node(pg_data_
 				 unsigned long size, int flags)
 {
 	unsigned long start, end;
+	bootmem_data_t *bdata = pgdat->bdata;
 
 	start = PFN_DOWN(physaddr);
 	end = PFN_UP(physaddr + size);
 
+	if (end > bdata->node_low_pfn)
+		end = bdata->node_low_pfn;
+
 	return mark_bootmem_node(pgdat->bdata, start, end, 1, flags);
 }