--- driver/dtrace_linux.c.orig	2009-12-22 20:33:02.239383000 +0000
+++ driver/dtrace_linux.c	2009-12-22 20:35:01.870196000 +0000
@@ -1450,7 +1450,15 @@
 //		printk("yy: pmd=%lx\n", *pmd);
 		return 0;
 	}
-	pte = pte_offset_kernel(pmd, addr);
+
+	if (pmd_large(*pmd)) 
+                pte = (pte_t *)pmd;
+        else 
+                pte = pte_offset_kernel(pmd, addr);
+
+        if (pte_none(*pte))
+                return 0;
+
 	if (dump_tree) {
 		printk("yy -- begin\n");
 		print_pte((pte_t *) pgd, 0);