[PATCH] ppc64: poison initmem
Poison initmem after we free it so we catch use after free issues.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/ppc64/mm/init.c b/arch/ppc64/mm/init.c
index b3b1e9c..a14ab87 100644
--- a/arch/ppc64/mm/init.c
+++ b/arch/ppc64/mm/init.c
@@ -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);