linux-kernel - Re: 4.1.28: memory leak introduced by "mm/swap.c: flush lru pvecs on compound page arrival"

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Message-ID: <BLUPR0501MB208230C3CCB7AC91F4E91B0087340@BLUPR0501MB2082.namprd05.prod.outlook.com>
Date:	Sat, 16 Jul 2016 17:29:59 +0000
From:	Jens Rottmann <jens.rottmann@...inktech.com>
To:	Minchan Kim <minchan@...nel.org>
CC:	Lukasz Odzioba <lukasz.odzioba@...el.com>,
	Sasha Levin <sasha.levin@...cle.com>,
	"stable@...r.kernel.org" <stable@...r.kernel.org>,
	Michal Hocko <mhocko@...e.com>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Mikulas Patocka" <mpatocka@...hat.com>
Subject: Re: 4.1.28: memory leak introduced by "mm/swap.c: flush lru pvecs on
 compound page arrival"

Hi Minchan (& all),

Minchan Kim wrote:
> [...] found __lru_cache_add has a bug. [...]
[-]     if (!pagevec_space(pvec) || PageCompound(page))
[+]     if (!pagevec_add(pvec, page) || PageCompound(page))

Confirm that did plug the leak, thanks!

Also I just saw this was known already:
https://marc.info/?l=linux-kernel&m=146858368215856
Sorry for not noticing earlier, I did search for "4.1.28 memory leak", but not for "memleak".

Many thanks,
Jens