linux-kernel - Re: [PATCH] mm,page_alloc: PF_WQ_WORKER threads must sleep at should_reclaim

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Message-ID: <alpine.DEB.2.21.1808231544001.150774@chino.kir.corp.google.com>
Date:   Thu, 23 Aug 2018 15:45:45 -0700 (PDT)
From:   David Rientjes <rientjes@...gle.com>
To:     Tetsuo Handa <penguin-kernel@...ove.sakura.ne.jp>
cc:     Michal Hocko <mhocko@...nel.org>, Tejun Heo <tj@...nel.org>,
        Roman Gushchin <guro@...com>,
        Johannes Weiner <hannes@...xchg.org>,
        Vladimir Davydov <vdavydov.dev@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        linux-mm <linux-mm@...ck.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] mm,page_alloc: PF_WQ_WORKER threads must sleep at
 should_reclaim_retry().

On Fri, 24 Aug 2018, Tetsuo Handa wrote:

> > For those of us who are tracking CVE-2016-10723 which has peristently been 
> > labeled as "disputed" and with no clear indication of what patches address 
> > it, I am assuming that commit 9bfe5ded054b ("mm, oom: remove sleep from 
> > under oom_lock") and this patch are the intended mitigations?
> > 
> > A list of SHA1s for merged fixed and links to proposed patches to address 
> > this issue would be appreciated.
> > 
> 
> Commit 9bfe5ded054b ("mm, oom: remove sleep from under oom_lock") is a
> mitigation for CVE-2016-10723.
> 
> "[PATCH] mm,page_alloc: PF_WQ_WORKER threads must sleep at
> should_reclaim_retry()." is independent from CVE-2016-10723.
> 

Thanks, Tetsuo.  Should commit af5679fbc669 ("mm, oom: remove oom_lock 
from oom_reaper") also be added to the list for CVE-2016-10723?