linux-kernel - Re: [lkp] [oom_reaper] df1e2f5663: EIP: [<81e30134>] mmput

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Date:	Wed, 1 Jun 2016 21:55:22 +1000
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Michal Hocko <mhocko@...nel.org>
Cc:	kernel test robot <xiaolong.ye@...el.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>,
	LKML <linux-kernel@...r.kernel.org>, lkp@...org
Subject: Re: [lkp] [oom_reaper] df1e2f5663: EIP: [<81e30134>]
 mmput_async+0x9/0x6b SS:ESP 0068:819a5e78

Hi Michal,

On Wed, 1 Jun 2016 10:55:49 +0200 Michal Hocko <mhocko@...nel.org> wrote:
>
> $ git show df1e2f56632ddf17186f7036a3bd809d3aed8fd8
> fatal: bad object df1e2f56632ddf17186f7036a3bd809d3aed8fd8
> 
> But a collegue of mine has it and
> $ git describe --contains df1e2f56632ddf17186f7036a3bd809d3aed8fd8
> next-20160527~2^2~53
> 
> But my tree doesn't seem to have this tag
> $ git show next-20160527
> fatal: ambiguous argument 'next-20160527': unknown revision or path not in the working tree.

OK, that makes sense then.  But the "git show" error message could be a
bit better (something like "bad object", I guess).

> So it seemed to be in linux-next but it is not in next-20160601. It is
> in the Linus tree as e2fe14564d33 ("oom_reaper: close race with exiting
> task") reachable from next-20160527.

So when it hit Linus' tree, I would have removed it from my copy of
mmotm and, of course, its SHA will have changed since Andrew sends his
stuff as patches.

-- 
Cheers,
Stephen Rothwell