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From: Cong Wang <xiyou.wangcong@gmail.com>
Date: Thu, 22 Jun 2017 15:53:18 -0700
Message-ID: <CAM_iQpW-UHTHErQtoWt0gdYkna3aOFxzfLuudFzP=nvDrpLHZQ@mail.gmail.com>
Subject: Re: [PATCH] mm,page_alloc: Serialize warn_alloc() if schedulable.
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Sender: owner-linux-mm@kvack.org
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To: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Cc: Michal Hocko <mhocko@suse.com>, Andrew Morton <akpm@linux-foundation.org>, linux-mm@kvack.org, dave.hansen@intel.com, Johannes Weiner <hannes@cmpxchg.org>, Mel Gorman <mgorman@suse.de>, vbabka@suse.cz

On Thu, Jun 22, 2017 at 3:35 AM, Tetsuo Handa
<penguin-kernel@i-love.sakura.ne.jp> wrote:
> Cong Wang wrote:
>> On Sun, Jun 4, 2017 at 1:58 AM, Tetsuo Handa
>> <penguin-kernel@i-love.sakura.ne.jp> wrote:
>> > You can retry with my kmallocwd patch shown bottom. An example output is
>> > at http://I-love.SAKURA.ne.jp/tmp/sample-serial.log .
>> >
>> > Of course, kmallocwd can gather only basic information. You might need to
>> > gather more information by e.g. enabling tracepoints after analyzing basic
>> > information.
>>
>> Sure, since it is a debugging patch we definitely can try it.
>>
>> >
>> > Below is kmallocwd patch backpoated for 4.9.30 kernel from
>> > http://lkml.kernel.org/r/1495331504-12480-1-git-send-email-penguin-kernel@I-love.SAKURA.ne.jp .
>> > Documentation/malloc-watchdog.txt part is stripped in order to reduce lines.
>>
>> Will do. But can't guarantee that we can reproduce it. ;)
>>
>
> Did you get a chance to try reproducing it?

Not yet, I plan to apply your patch to our next kernel release but it
doesn't happen yet. ;) I will let you know if I have any update.

Thanks.

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