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From: Michal Hocko <mhocko@kernel.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Andrea Argangeli <andrea@kernel.org>,
	"Kirill A. Shutemov" <kirill@shutemov.name>,
	Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>,
	Oleg Nesterov <oleg@redhat.com>,
	Wenwei Tao <wenwei.tww@alibaba-inc.com>,
	linux-mm@kvack.org, LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 0/2] mm, oom: fix oom_reaper fallouts
Date: Tue, 15 Aug 2017 14:29:16 +0200	[thread overview]
Message-ID: <20170815122915.GF29067@dhcp22.suse.cz> (raw)
In-Reply-To: <20170807113839.16695-1-mhocko@kernel.org>

On Mon 07-08-17 13:38:37, Michal Hocko wrote:
> Hi,
> there are two issues this patch series attempts to fix. First one is
> something that has been broken since MMF_UNSTABLE flag introduction
> and I guess we should backport it stable trees (patch 1). The other
> issue has been brought up by Wenwei Tao and Tetsuo Handa has created
> a test case to trigger it very reliably. I am not yet sure this is a
> stable material because the test case is rather artificial. If there is
> a demand for the stable backport I will prepare it, of course, though.
> 
> I hope I've done the second patch correctly but I would definitely
> appreciate some more eyes on it. Hence CCing Andrea and Kirill. My
> previous attempt with some more context was posted here
> http://lkml.kernel.org/r/20170803135902.31977-1-mhocko@kernel.org
> 
> My testing didn't show anything unusual with these two applied on top of
> the mmotm tree.

unless anybody object can we have this merged? Whether to push this to
the stable tree is still questionable because it requires a rather
artificial workload to trigger the issue but if others think it would be
better to have it backported I will prepare backports for all relevant
stable trees.
-- 
Michal Hocko
SUSE Labs

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      parent reply	other threads:[~2017-08-15 12:29 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-08-07 11:38 Michal Hocko
2017-08-07 11:38 ` [PATCH 1/2] mm: fix double mmap_sem unlock on MMF_UNSTABLE enforced SIGBUS Michal Hocko
2017-08-15  0:49   ` David Rientjes
2017-08-07 11:38 ` [PATCH 2/2] mm, oom: fix potential data corruption when oom_reaper races with writer Michal Hocko
2017-08-08 17:48   ` Andrea Arcangeli
2017-08-08 23:35     ` Tetsuo Handa
2017-08-09 18:36       ` Andrea Arcangeli
2017-08-10  8:21     ` Michal Hocko
2017-08-10 13:33       ` Michal Hocko
2017-08-11  2:28   ` Tetsuo Handa
2017-08-11  7:09     ` Michal Hocko
2017-08-11  7:54       ` Tetsuo Handa
2017-08-11 10:22         ` Andrea Arcangeli
2017-08-11 10:42           ` Andrea Arcangeli
2017-08-11 11:53             ` Tetsuo Handa
2017-08-11 12:08         ` Michal Hocko
2017-08-11 15:46           ` Tetsuo Handa
2017-08-14 13:59             ` Michal Hocko
2017-08-14 22:51               ` Tetsuo Handa
2017-08-15  6:55                 ` Michal Hocko
2017-08-15  8:41                 ` Michal Hocko
2017-08-15 10:06                   ` Tetsuo Handa
2017-08-15 12:26                     ` Michal Hocko
2017-08-15 12:58                       ` Tetsuo Handa
2017-08-17 13:58                         ` Michal Hocko
2017-08-15  5:30               ` Tetsuo Handa
2017-08-07 13:28 ` [PATCH 0/2] mm, oom: fix oom_reaper fallouts Tetsuo Handa
2017-08-07 14:04   ` Michal Hocko
2017-08-07 15:23     ` Tetsuo Handa
2017-08-15 12:29 ` Michal Hocko [this message]

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