From mboxrd@z Thu Jan 1 00:00:00 1970 From: Balbir Singh Subject: Re: MPTSAS problems in 2.6.26-rc2-mm1 Date: Wed, 28 May 2008 20:26:27 +0530 Message-ID: <483D729B.1000706@linux.vnet.ibm.com> References: <483D28C5.4060406@linux.vnet.ibm.com> <1211967958.12349.65.camel@twins> <1211986063.3445.18.camel@localhost.localdomain> Reply-To: balbir@linux.vnet.ibm.com Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from E23SMTP02.au.ibm.com ([202.81.18.163]:58180 "EHLO e23smtp02.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751198AbYE1O5i (ORCPT ); Wed, 28 May 2008 10:57:38 -0400 In-Reply-To: <1211986063.3445.18.camel@localhost.localdomain> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: James Bottomley Cc: Peter Zijlstra , linux-scsi@vger.kernel.org, Andrew Morton , linux kernel mailing list , Greg KH James Bottomley wrote: > 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 Thanks for pointer, it does indeed look like a variant of the same problem -- Warm Regards, Balbir Singh Linux Technology Center IBM, ISTL