linux-kernel - Re: MPTSAS problems in 2.6.26-rc2-mm1

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Message-Id: <1211986063.3445.18.camel@localhost.localdomain>
Date:	Wed, 28 May 2008 09:47:43 -0500
From:	James Bottomley <James.Bottomley@...senPartnership.com>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	balbir@...ux.vnet.ibm.com, linux-scsi@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux kernel mailing list <linux-kernel@...r.kernel.org>,
	Greg KH <greg@...ah.com>
Subject: Re: MPTSAS problems in 2.6.26-rc2-mm1

On Wed, 2008-05-28 at 11:45 +0200, Peter Zijlstra wrote:
> On Wed, 2008-05-28 at 15:11 +0530, Balbir Singh wrote:
> > I have 2.6.26-rc2-mm1 with Rik's splitvm patches. While booting the kernel, I
> > ran into the following. I searched my email quickly to see that no one else has
> > reported this problem. Lockdep seems to be complaining about the same lock being
> > held at the same location (the message is a bit confusing to me).
> 
> looks like device_add() recursing - most likely with a different device
> though.

This is another instance of a problem being caused by semaphore to mutex
conversion in struct class;

There's another thread on this here:

http://marc.info/?t=121074904600001

James



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