Re: [PATCHv2] mm: introduce NR_BAD_PAGES and track them via kmemleak

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On Wed, Sep 21, 2022 at 11:17:26AM +0800, zhaoyang.huang wrote:
> From: Zhaoyang Huang <zhaoyang.huang@xxxxxxxxxx>
> 
> Bad pages could be introduced by extra reference among high order pages or compound
> tail pages which cause the pages failed go back to allocator and leaved as orphan
> pages. Booking them down and tracking them via kmemleak.
> 
> Signed-off-by: Zhaoyang Huang <zhaoyang.huang@xxxxxxxxxx>

As I commented previously, I don't understand what bad pages have to do
with kmemleak. Well, you could argue they are memory leaks but kmemleaks
are about logical (software) errors rather than hardware issues.

-- 
Catalin




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