linux-kernel - Re: ext4 lockdep trace (3.1.0rc3)

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Date:	Tue, 30 Aug 2011 08:30:43 -0400
From:	Josh Boyer <jwboyer@...il.com>
To:	Dave Jones <davej@...hat.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>, tytso@....edu,
	adilger.kernel@...ger.ca
Subject: Re: ext4 lockdep trace (3.1.0rc3)

On Mon, Aug 29, 2011 at 4:54 PM, Dave Jones <davej@...hat.com> wrote:
> On Mon, Aug 29, 2011 at 04:48:30PM -0400, Dave Jones wrote:
>  > On Fri, Aug 26, 2011 at 05:49:30PM -0400, Dave Jones wrote:
>  >  > just hit this while building a kernel.  Laptop wedged for a few seconds
>  >  > during the final link, and this was in the log when it unwedged.
>  >
>  > I still see this in rc4, and can reproduce it reliably every time I build.
>  > It only started happening in the last week.  I don't see any ext4 or vfs commits
>  > within a few days of that, so I'm not sure why it only just begun
>  > (I do daily builds, and the 26th was the first time I saw it appear)
>  >
>  > Given the lack of obvious commits in that timeframe, I'm not sure a bisect is
>  > going to be particularly fruitful. It might just be that my IO patterns changed ?
>
> also a second variant with a different trace.

That one has been reported for a while.  See RH bug 732572

josh
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