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Date:   Thu, 5 Apr 2018 15:50:02 +0200
From:   Greg KH <>
To:     Claudio Imbrenda <>
Subject: Re: [PATCH v1 1/1] mm/ksm: fix inconsistent accounting of zero pages

On Thu, Apr 05, 2018 at 02:27:54PM +0200, Claudio Imbrenda wrote:
> When using KSM with use_zero_pages, we replace anonymous pages
> containing only zeroes with actual zero pages, which are not anonymous.
> We need to do proper accounting of the mm counters, otherwise we will
> get wrong values in /proc and a BUG message in dmesg when tearing down
> the mm.
> Fixes: e86c59b1b1 ("mm/ksm: improve deduplication of zero pages with colouring")
> Signed-off-by: Claudio Imbrenda <>
> ---
>  mm/ksm.c | 7 +++++++
>  1 file changed, 7 insertions(+)


This is not the correct way to submit patches for inclusion in the
stable kernel tree.  Please read:
for how to do this properly.


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