From: Mel Gorman <mgorman@suse.de>
To: Dave Hansen <dave@sr71.net>
Cc: LKML <linux-kernel@vger.kernel.org>,
Linux-MM <linux-mm@kvack.org>,
Andrew Morton <akpm@linux-foundation.org>,
Johannes Weiner <hannes@cmpxchg.org>,
Shaohua Li <shli@kernel.org>,
Anton Vorontsov <anton.vorontsov@linaro.org>,
Minchan Kim <minchan@kernel.org>
Subject: Re: mmotm-2013-05-22: Bad page state
Date: Wed, 29 May 2013 10:15:30 +0100 [thread overview]
Message-ID: <20130529091530.GA29426@suse.de> (raw)
In-Reply-To: <51A526D9.3020803@sr71.net>
On Tue, May 28, 2013 at 02:51:21PM -0700, Dave Hansen wrote:
> I was rebasing my mapping->radix_tree lock batching patches on top of
> Mel's stuff. It looks like something is jumping the gun and freeing a
> page before it has been written out. Somebody probably did an extra
> put_page() or something.
>
> I'm running 3.10.0-rc2-mm1-00322-g8d4c612 from
>
> git://git.cmpxchg.org/linux-mmotm.git
>
> This is pretty reproducible. I'll go try and test plain 3.10-rc2 next
> to make sure it's not coming from Linus's stuff.
>
Patch 1 from the follow-up series "mm: vmscan: Block kswapd if it is
encountering pages under writeback -fix"
The rest of that follow-up series needs further work and I'm still
working on it but patch 1 is what fixes this particular problem.
Changelog says why.
--
Mel Gorman
SUSE Labs
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WARNING: multiple messages have this Message-ID (diff)
From: Mel Gorman <mgorman@suse.de>
To: Dave Hansen <dave@sr71.net>
Cc: LKML <linux-kernel@vger.kernel.org>,
Linux-MM <linux-mm@kvack.org>,
Andrew Morton <akpm@linux-foundation.org>,
Johannes Weiner <hannes@cmpxchg.org>,
Shaohua Li <shli@kernel.org>,
Anton Vorontsov <anton.vorontsov@linaro.org>,
Minchan Kim <minchan@kernel.org>
Subject: Re: mmotm-2013-05-22: Bad page state
Date: Wed, 29 May 2013 10:15:30 +0100 [thread overview]
Message-ID: <20130529091530.GA29426@suse.de> (raw)
In-Reply-To: <51A526D9.3020803@sr71.net>
On Tue, May 28, 2013 at 02:51:21PM -0700, Dave Hansen wrote:
> I was rebasing my mapping->radix_tree lock batching patches on top of
> Mel's stuff. It looks like something is jumping the gun and freeing a
> page before it has been written out. Somebody probably did an extra
> put_page() or something.
>
> I'm running 3.10.0-rc2-mm1-00322-g8d4c612 from
>
> git://git.cmpxchg.org/linux-mmotm.git
>
> This is pretty reproducible. I'll go try and test plain 3.10-rc2 next
> to make sure it's not coming from Linus's stuff.
>
Patch 1 from the follow-up series "mm: vmscan: Block kswapd if it is
encountering pages under writeback -fix"
The rest of that follow-up series needs further work and I'm still
working on it but patch 1 is what fixes this particular problem.
Changelog says why.
--
Mel Gorman
SUSE Labs
next prev parent reply other threads:[~2013-05-29 9:15 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-28 21:51 mmotm-2013-05-22: Bad page state Dave Hansen
2013-05-28 21:51 ` Dave Hansen
2013-05-28 21:53 ` Dave Hansen
2013-05-28 21:53 ` Dave Hansen
2013-05-29 9:15 ` Mel Gorman [this message]
2013-05-29 9:15 ` Mel Gorman
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