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authorAnton Blanchard <anton@samba.org>2005-09-06 12:05:26 +1000
committerPaul Mackerras <paulus@samba.org>2005-09-06 16:07:53 +1000
commit4721e2214b5fd6eca48caea76afb1bad3148930f (patch)
treed4212c465fb10a71022c755700a77bcf8b47af37
parent2f4cf721eb2ff23b60af2932fd9fa4026f2a1164 (diff)
downloadop-kernel-dev-4721e2214b5fd6eca48caea76afb1bad3148930f.zip
op-kernel-dev-4721e2214b5fd6eca48caea76afb1bad3148930f.tar.gz
[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>
-rw-r--r--arch/ppc64/mm/init.c1
1 files changed, 1 insertions, 0 deletions
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 @@ void free_initmem(void)
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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