Messages in this thread | | | Subject | Re: [PATCH v2 1/2] mm/page_ext: support to record the last stack of page | From | Vlastimil Babka <> | Date | Mon, 9 Sep 2019 14:59:12 +0200 |
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On 9/9/19 10:53 AM, Walter Wu wrote: > 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>
There's no point in separating this from patch 2 (and as David pointed out, doesn't compile).
> --- > 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; >
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