linux-kernel - [PATCH -mm 0/4] oom: linux has threads

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Message-ID: <20100402183057.GA31723@redhat.com>
Date:	Fri, 2 Apr 2010 20:30:57 +0200
From:	Oleg Nesterov <oleg@...hat.com>
To:	David Rientjes <rientjes@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc:	anfei <anfei.zhou@...il.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	nishimura@....nes.nec.co.jp,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Mel Gorman <mel@....ul.ie>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH -mm 0/4] oom: linux has threads

On 04/02, Oleg Nesterov wrote:
>
> Once again:
>
> 	void *memory_hog_thread(void *arg)
> 	{
> 		for (;;)
> 			malloc(A_LOT);
> 	}
>
> 	int main(void)
> 	{
> 		pthread_create(memory_hog_thread, ...);
> 		syscall(__NR_exit, 0);
> 	}
>
> Now, even if we fix PF_EXITING check, select_bad_process() will always
> ignore this process. The group leader has ->mm == NULL.

So. Please see the COMPLETELY UNTESTED patches I am sending. They need
your review, or feel free to redo these fixes. 4/4 is a bit off-topic.

Also, please note the "This patch is not enough" comment in 3/4.

Oleg.

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