linux-kernel - Re: 3.0-rc3: WARNING: at fs/fs-writeback.c:356 writeback_single

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Message-ID: <20110619135618.GA4545@localhost>
Date:	Sun, 19 Jun 2011 21:56:18 +0800
From:	Wu Fengguang <fengguang.wu@...el.com>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc:	Meelis Roos <mroos@...ux.ee>,
	Linux Kernel list <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
	Christoph Hellwig <hch@...radead.org>,
	Andi Kleen <ak@...ux.intel.com>
Subject: Re: 3.0-rc3: WARNING: at fs/fs-writeback.c:356
 writeback_single_inode+0x3e/0x18f()

On Sun, Jun 19, 2011 at 07:07:18AM +0800, Benjamin Herrenschmidt wrote:
> On Sun, 2011-06-19 at 01:33 +0800, Wu Fengguang wrote:
> > Hi Benjamin,
> > 
> > On Wed, Jun 15, 2011 at 02:42:56PM +1000, Benjamin Herrenschmidt wrote:
> > > On Tue, 2011-06-14 at 12:15 +0300, Meelis Roos wrote:
> > > > Tested 3.0-rc3 on my PC (2 PATA disks, single duron CPU). Got several of 
> > > > these in dmesg:
> > > 
> > > Same here on a powerpc64 machine while doing a fresh debian install
> > > (while the installer's installing the packages), -rc3 as well.
> > 
> > Do you have some clue that this bug show up in between 3.0-rc1 and
> > 3.0-rc3, or between 2.6.39 and 3.0-rc3?
> 
> No idea. I just noticed that as I was re-installing debian on a machine
> (to track down another problem actually).
> 
> Maybe Meelis has more data.

OK, thanks.

Andi/Meelis, what's your kconfig? Hope that can give me more better
opportunity to reproduce the bug.

Thanks,
Fengguang
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