[PATCH] ppc64: poison initmem
Anton Blanchard
anton at samba.org
Tue Sep 6 12:05:26 EST 2005
Poison initmem after we free it so we catch use after free issues.
Signed-off-by: Anton Blanchard <anton at samba.org>
Index: build/arch/ppc64/mm/init.c
===================================================================
--- build.orig/arch/ppc64/mm/init.c 2005-09-06 11:29:15.000000000 +1000
+++ build/arch/ppc64/mm/init.c 2005-09-06 11:29:36.000000000 +1000
@@ -392,6 +392,7 @@
addr = (unsigned long)__init_begin;
for (; addr < (unsigned long)__init_end; addr += PAGE_SIZE) {
+ memset((void *)addr, 0xcc, PAGE_SIZE);
ClearPageReserved(virt_to_page(addr));
set_page_count(virt_to_page(addr), 1);
free_page(addr);
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