Re: [PATCH] lib/scatterlist: Hook sg_kmalloc into kmemleak (v2)

From: Catalin Marinas
Date: Wed Jul 28 2010 - 17:33:05 EST

On Tue, 2010-07-27 at 09:44 +0100, Chris Wilson wrote:
> kmemleak ignores page_alloc() and so believes the final sub-page
> allocation using the plain kmalloc is decoupled and lost. This leads to
> lots of false-positives with code that uses scatterlists.
> The options seem to be either to tell kmemleak that the kmalloc is not
> leaked or to notify kmemleak of the page allocations. The danger of the
> first approach is that we may hide a real leak, so choose the latter
> approach (of which I am not sure of the downsides).
> v2: Added comments on the suggestion of Catalin.
> Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>

Thanks. The patch looks good. I'll place it in my kmemleak branch and
send it to Linus together with other kmemleak patches (hopefully I won't
miss the merging window as I'm going on holiday for a week).


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