patch-2.3.99-pre3 linux/kernel/ptrace.c

• Lines: 12
• Date: Tue Mar 21 11:01:25 2000
• Orig file: v2.3.99-pre2/linux/kernel/ptrace.c
• Orig date: Sun Feb 13 19:29:04 2000

diff -u --recursive --new-file v2.3.99-pre2/linux/kernel/ptrace.c linux/kernel/ptrace.c
@@ -44,9 +44,9 @@
 	mapnr = pte_pagenr(*pgtable);
 	if (write && (!pte_write(*pgtable) || !pte_dirty(*pgtable)))
 		goto fault_in_page;
-	if (mapnr >= max_mapnr)
-		return 0;
 	page = mem_map + mapnr;
+	if ((mapnr >= max_mapnr) || PageReserved(page))
+		return 0;
 	flush_cache_page(vma, addr);
 
 	if (write) {