linux-kernel - Re: 2.6.23-mm1

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Message-Id: <20071014113914.7654759d.akpm@linux-foundation.org>
Date:	Sun, 14 Oct 2007 11:39:14 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	"Torsten Kaiser" <just.for.lkml@...glemail.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: 2.6.23-mm1

On Sun, 14 Oct 2007 13:54:26 +0200 "Torsten Kaiser" <just.for.lkml@...glemail.com> wrote:

> > The page-owner code can pinpoint a leak source.  See
> > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.23/2.6.23-mm1/broken-out/page-owner-tracking-leak-detector.patch
> >
> > Enable CONFIG_DEBUG_SLAB_LEAK, check out /proc/slab_allocators
> 
> Did that. The output of /proc/page_owner is ~350Mb, gzipped still ~7Mb.
> 
> Taking only the first line from each stackdump it shows the following counts:
>
> ...
>
>  354042 [0xffffffff80266373] mempool_alloc+83

This one is suspicious.  Can you find the whole record for it?

The other info shows a tremendous memory leak, not via slab.  Looks like
someone is running alloc_pages() directly and isnb't giving them back.

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