linux-kernel - Re: [PATCH] bugfix oom kill init lead panic

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Message-ID: <alpine.DEB.2.10.1512011540550.23632@chino.kir.corp.google.com>
Date:	Tue, 1 Dec 2015 15:41:36 -0800 (PST)
From:	David Rientjes <rientjes@...gle.com>
To:	chenjie6@...wei.com
cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	David.Woodhouse@...el.com, zhihui.gao@...wei.com,
	lizefan@...wei.com, akpm@...ux-foundation.org,
	stable@...r.kernel.org
Subject: Re: [PATCH] bugfix oom kill init lead panic

On Mon, 30 Nov 2015, chenjie6@...wei.com wrote:

> From: chenjie <chenjie6@...wei.com>
> 
> when oom happened we can see:
> Out of memory: Kill process 9134 (init) score 3 or sacrifice child                  
> Killed process 9134 (init) total-vm:1868kB, anon-rss:84kB, file-rss:572kB
> Kill process 1 (init) sharing same memory
> ...
> Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000009
> 
> That's because:
> 	the busybox init will vfork a process,oom_kill_process found
> the init not the children,their mm is the same when vfork.
> 
> Cc: <stable@...r.kernel.org>
> Signed-off-by: Chen Jie <chenjie6@...wei.com>

Acked-by: David Rientjes <rientjes@...gle.com>
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