From: Michal Hocko <mhocko@kernel.org>
To: Ross Zwisler <zwisler@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Mel Gorman <mgorman@suse.de>,
Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>,
David Rientjes <rientjes@google.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Oleg Nesterov <oleg@redhat.com>, Hugh Dickins <hughd@google.com>,
Andrea Argangeli <andrea@kernel.org>,
Rik van Riel <riel@redhat.com>,
linux-mm@kvack.org, LKML <linux-kernel@vger.kernel.org>,
Ross Zwisler <ross.zwisler@linux.intel.com>
Subject: Re: [PATCH 1/2] mm, oom: introduce oom reaper
Date: Fri, 25 Dec 2015 12:44:29 +0100 [thread overview]
Message-ID: <20151225114428.GC6754@dhcp22.suse.cz> (raw)
In-Reply-To: <20151225113537.GA6754@dhcp22.suse.cz>
On Fri 25-12-15 12:35:37, Michal Hocko wrote:
[...]
> Thanks I will try to reproduce early next year. But so far I think this
> is just a general issue of MADV_DONTNEED vs. truncate and oom_reaper is
> just lucky to trigger it. There shouldn't be anything oom_reaper
> specific here. Maybe there is some additional locking missing?
Hmm, scratch that. I think Tetsuo has nailed it. It seems like
the missing initialization of details structure during unmap
is the culprit. So there most probably was on OOM killing
invoked. It is just a side effect of the patch and missing
http://marc.info/?l=linux-mm&m=145068666428057 follow up fix.
--
Michal Hocko
SUSE Labs
WARNING: multiple messages have this Message-ID (diff)
From: Michal Hocko <mhocko@kernel.org>
To: Ross Zwisler <zwisler@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Mel Gorman <mgorman@suse.de>,
Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>,
David Rientjes <rientjes@google.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Oleg Nesterov <oleg@redhat.com>, Hugh Dickins <hughd@google.com>,
Andrea Argangeli <andrea@kernel.org>,
Rik van Riel <riel@redhat.com>,
linux-mm@kvack.org, LKML <linux-kernel@vger.kernel.org>,
Ross Zwisler <ross.zwisler@linux.intel.com>
Subject: Re: [PATCH 1/2] mm, oom: introduce oom reaper
Date: Fri, 25 Dec 2015 12:44:29 +0100 [thread overview]
Message-ID: <20151225114428.GC6754@dhcp22.suse.cz> (raw)
In-Reply-To: <20151225113537.GA6754@dhcp22.suse.cz>
On Fri 25-12-15 12:35:37, Michal Hocko wrote:
[...]
> Thanks I will try to reproduce early next year. But so far I think this
> is just a general issue of MADV_DONTNEED vs. truncate and oom_reaper is
> just lucky to trigger it. There shouldn't be anything oom_reaper
> specific here. Maybe there is some additional locking missing?
Hmm, scratch that. I think Tetsuo has nailed it. It seems like
the missing initialization of details structure during unmap
is the culprit. So there most probably was on OOM killing
invoked. It is just a side effect of the patch and missing
http://marc.info/?l=linux-mm&m=145068666428057 follow up fix.
--
Michal Hocko
SUSE Labs
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next prev parent reply other threads:[~2015-12-25 11:44 UTC|newest]
Thread overview: 78+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-15 18:36 [PATCH 1/2] mm, oom: introduce oom reaper Michal Hocko
2015-12-15 18:36 ` Michal Hocko
2015-12-17 0:50 ` Andrew Morton
2015-12-17 0:50 ` Andrew Morton
2015-12-17 13:02 ` Michal Hocko
2015-12-17 13:02 ` Michal Hocko
2015-12-17 19:55 ` Linus Torvalds
2015-12-17 19:55 ` Linus Torvalds
2015-12-17 20:00 ` Andrew Morton
2015-12-17 20:00 ` Andrew Morton
2015-12-18 11:54 ` Michal Hocko
2015-12-18 11:54 ` Michal Hocko
2015-12-18 21:14 ` Andrew Morton
2015-12-18 21:14 ` Andrew Morton
2015-12-21 8:38 ` Michal Hocko
2015-12-21 8:38 ` Michal Hocko
2015-12-17 21:13 ` Andrew Morton
2015-12-17 21:13 ` Andrew Morton
2015-12-18 12:11 ` Michal Hocko
2015-12-18 12:11 ` Michal Hocko
2015-12-18 12:10 ` Tetsuo Handa
2015-12-18 12:10 ` Tetsuo Handa
2015-12-20 7:14 ` Tetsuo Handa
2015-12-20 7:14 ` Tetsuo Handa
2015-12-18 0:15 ` Andrew Morton
2015-12-18 0:15 ` Andrew Morton
2015-12-18 11:48 ` Michal Hocko
2015-12-18 11:48 ` Michal Hocko
2015-12-21 20:38 ` Paul Gortmaker
2015-12-21 20:38 ` Paul Gortmaker
2016-01-06 9:10 ` Michal Hocko
2016-01-06 9:10 ` Michal Hocko
2016-01-06 14:26 ` Paul Gortmaker
2016-01-06 14:26 ` Paul Gortmaker
2016-01-06 15:00 ` Michal Hocko
2016-01-06 15:00 ` Michal Hocko
2015-12-23 23:00 ` Ross Zwisler
2015-12-23 23:00 ` Ross Zwisler
2015-12-24 9:47 ` Michal Hocko
2015-12-24 9:47 ` Michal Hocko
2015-12-24 11:06 ` Tetsuo Handa
2015-12-24 11:06 ` Tetsuo Handa
2015-12-24 20:39 ` Ross Zwisler
2015-12-24 20:39 ` Ross Zwisler
2015-12-25 11:41 ` Michal Hocko
2015-12-25 11:41 ` Michal Hocko
2015-12-24 20:44 ` Ross Zwisler
2015-12-24 20:44 ` Ross Zwisler
2015-12-25 11:35 ` Michal Hocko
2015-12-25 11:35 ` Michal Hocko
2015-12-25 11:44 ` Michal Hocko [this message]
2015-12-25 11:44 ` Michal Hocko
2016-01-06 15:42 [PATCH 0/2 -mm] oom reaper v4 Michal Hocko
2016-01-06 15:42 ` [PATCH 1/2] mm, oom: introduce oom reaper Michal Hocko
2016-01-06 15:42 ` Michal Hocko
2016-01-07 11:23 ` Tetsuo Handa
2016-01-07 11:23 ` Tetsuo Handa
2016-01-07 12:30 ` Michal Hocko
2016-01-07 12:30 ` Michal Hocko
2016-01-11 22:54 ` Andrew Morton
2016-01-11 22:54 ` Andrew Morton
2016-01-12 8:16 ` Michal Hocko
2016-01-12 8:16 ` Michal Hocko
2016-01-28 1:28 ` David Rientjes
2016-01-28 1:28 ` David Rientjes
2016-01-28 21:42 ` Michal Hocko
2016-01-28 21:42 ` Michal Hocko
2016-02-02 3:02 ` David Rientjes
2016-02-02 3:02 ` David Rientjes
2016-02-02 8:57 ` Michal Hocko
2016-02-02 8:57 ` Michal Hocko
2016-02-02 11:48 ` Tetsuo Handa
2016-02-02 11:48 ` Tetsuo Handa
2016-02-02 22:55 ` David Rientjes
2016-02-02 22:55 ` David Rientjes
2016-02-02 22:51 ` David Rientjes
2016-02-02 22:51 ` David Rientjes
2016-02-03 10:31 ` Tetsuo Handa
2016-02-03 10:31 ` Tetsuo Handa
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