Messages in this thread Patch in this message | | | From | Walter Wu <> | Subject | [PATCH v2 1/2] mm/page_ext: support to record the last stack of page | Date | Mon, 9 Sep 2019 16:53:39 +0800 |
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KASAN will record last stack of page in order to help programmer to see memory corruption caused by page.
What is difference between page_owner and our patch? page_owner records alloc stack of page, but our patch is to record last stack(it may be alloc or free stack of page).
Signed-off-by: Walter Wu <walter-zh.wu@mediatek.com> --- mm/page_ext.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/mm/page_ext.c b/mm/page_ext.c index 5f5769c7db3b..7ca33dcd9ffa 100644 --- a/mm/page_ext.c +++ b/mm/page_ext.c @@ -65,6 +65,9 @@ static struct page_ext_operations *page_ext_ops[] = { #if defined(CONFIG_IDLE_PAGE_TRACKING) && !defined(CONFIG_64BIT) &page_idle_ops, #endif +#ifdef CONFIG_KASAN + &page_stack_ops, +#endif }; static unsigned long total_usage; -- 2.18.0
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