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 imbrenda@linux.vnet.ibm.com

mm/ksm.c | 7 +++++++ 1 file changed, 7 insertions(+)

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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.

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