Re: Question about memory leak detector giving false positivereport for net/core/flow.c

From: Catalin Marinas
Date: Thu Sep 29 2011 - 10:22:15 EST


On Thu, Sep 29, 2011 at 03:08:47PM +0100, Christoph Lameter wrote:
> On Wed, 28 Sep 2011, Catalin Marinas wrote:
>
> > I tried this but it's tricky. The problem is that the percpu pointer
> > returned by alloc_percpu() does not directly point to the per-cpu chunks
> > and kmemleak would report most percpu allocations as leaks. So far the
> > workaround is to simply mark the alloc_percpu() objects as never leaking
> > and at least we avoid false positives in other areas. See the patch
> > below (note that you have to increase the CONFIG_KMEMLEAK_EARLY_LOG_SIZE
> > as there are many alloc_percpu() calls before kmemleak is fully
> > initialised):
>
> Seems that kernel.org is out and so tejon wont be seeing these.

That's ok, I don't aim this at the upcoming merging window. I don't have
an alternative email address for him.

--
Catalin
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