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Date:   Thu, 5 Apr 2018 15:50:02 +0200
From:   Greg KH <greg@kroah.com>
To:     Claudio Imbrenda <imbrenda@linux.vnet.ibm.com>
Cc:     linux-kernel@vger.kernel.org, akpm@linux-foundation.org,
        aarcange@redhat.com, minchan@kernel.org,
        kirill.shutemov@linux.intel.com, linux-mm@kvack.org,
        hughd@google.com, borntraeger@de.ibm.com,
        gerald.schaefer@de.ibm.com, stable@vger.kernel.org
Subject: Re: [PATCH v1 1/1] mm/ksm: fix inconsistent accounting of zero pages
Message-ID: <20180405135002.GA23486@kroah.com>
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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 <imbrenda@linux.vnet.ibm.com>
> ---
>  mm/ksm.c | 7 +++++++
>  1 file changed, 7 insertions(+)

<formletter>

This is not the correct way to submit patches for inclusion in the
stable kernel tree.  Please read:
    https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
for how to do this properly.

</formletter>