linux-kernel - Re: kernel BUG at mm/vmscan.c:1114

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Message-ID: <CAJn8CcF83cu3pYeVUH+F4Pao8jrnze-EVy_b-DnSUtN6HN_r2g@mail.gmail.com>
Date:	Wed, 3 Aug 2011 14:45:51 +0800
From:	Xiaotian Feng <xtfeng@...il.com>
To:	Mel Gorman <mgorman@...e.de>
Cc:	linux-mm@...ck.org, linux-kernel <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: kernel BUG at mm/vmscan.c:1114

On Tue, Aug 2, 2011 at 10:24 PM, Mel Gorman <mgorman@...e.de> wrote:
> On Tue, Aug 02, 2011 at 03:09:57PM +0800, Xiaotian Feng wrote:
>> Hi,
>>    I'm hitting the kernel BUG at mm/vmscan.c:1114 twice, each time I
>> was trying to build my kernel. The photo of crash screen and my config
>> is attached. Thanks.
>> Regards
>> Xiaotian
>
> I am obviously blind because in 3.0, I cannot see what BUG is at
> mm/vmscan.c:1114 :(. I see
>
> 1109:                   /*
> 1110:                    * If we don't have enough swap space, reclaiming of
> 1111:                    * anon page which don't already have a swap slot is
> 1112:                    * pointless.
> 1113:                    */
> 1114:                   if (nr_swap_pages <= 0 && PageAnon(cursor_page) &&
> 1115:                       !PageSwapCache(cursor_page))
> 1116:                           break;
> 1117:
> 1118:                   if (__isolate_lru_page(cursor_page, mode, file) == 0) {
> 1119:                           list_move(&cursor_page->lru, dst);
> 1120:                           mem_cgroup_del_lru(cursor_page);
>
> Is this 3.0 vanilla or are there some other patches applied?

No, I'm using fresh cloned upstream kernel, without any changes. Thanks.

>
> --
> Mel Gorman
> SUSE Labs
>
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