Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756969AbYGHKz6 (ORCPT ); Tue, 8 Jul 2008 06:55:58 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754442AbYGHKzs (ORCPT ); Tue, 8 Jul 2008 06:55:48 -0400 Received: from ausmtp04.au.ibm.com ([202.81.18.152]:56581 "EHLO ausmtp04.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754190AbYGHKzq (ORCPT ); Tue, 8 Jul 2008 06:55:46 -0400 Message-ID: <487345E9.8090505@linux.vnet.ibm.com> Date: Tue, 08 Jul 2008 16:18:09 +0530 From: Kamalesh Babulal User-Agent: Thunderbird 1.5.0.14ubu (X11/20080505) MIME-Version: 1.0 To: James Bottomley CC: David Teigland , Stephen Rothwell , linux-next@vger.kernel.org, LKML , linux-scsi@vger.kernel.org, Eric.Moore@lsi.com, Andy Whitcroft Subject: Re: [BUG] linux-next: Tree for March 25 kernel oops, when loading mpt fusion driver - regression References: <20080325175224.3ee62b09.sfr@canb.auug.org.au> <47E9F0B0.4060006@linux.vnet.ibm.com> <20080626203857.GB3815@redhat.com> <1215372215.4197.28.camel@localhost.localdomain> <487279C9.2010802@linux.vnet.ibm.com> <1215462321.3274.34.camel@localhost.localdomain> In-Reply-To: <1215462321.3274.34.camel@localhost.localdomain> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3006 Lines: 80 James Bottomley wrote: > On Tue, 2008-07-08 at 01:47 +0530, Kamalesh Babulal wrote: >> James Bottomley wrote: >>> On Thu, 2008-06-26 at 15:38 -0500, David Teigland wrote: >>>> On Wed, Mar 26, 2008 at 12:14:00PM +0530, Kamalesh Babulal wrote: >>>>> Hi Stephen, >>>>> >>>>> Kernel bug is hit while booting up the next-20080325 kernel with MPT >>>>> Fusion driver built in.This was reported previously for the >>>>> next-20080320 kernel >>>>> http://marc.info/?l=linux-next&m=120601013920868&w=2 >>>> Hi, did you ever get this fixed? I've been having the same problem, >>>> http://marc.info/?l=linux-scsi&m=121061780821823&w=4 >>>> still exists on 2.6.26-rc8 for me, >>>> >>>> Loading scsi_transport_spi.ko module >>>> Loading mptscsih.ko module >>>> Loading mptspi.ko module >>>> Fusion MPT SPI Host driver 3.04.06 >>>> ACPI: PCI Interrupt 0000:86:01.0[A] -> GSI 32 (level, low) -> IRQ 32 >>>> mptbase: ioc0: Initiating bringup >>>> ioc0: LSI53C1030 B2: Capabilities={Initiator,Target} >>>> mptbase: ioc0: PCI-MSI enabled >>> I speculate that this might be related to the problem. The fusion >>> driver was recently flipped to default to MSI enable (previously it had >>> disabled them). Could you boot it with the fusion module parameter >>> >>> mpt_msi_enable=0 >>> >>> if it actually boots that will be a good confirmation that MSI is to >>> blame. >>> >>>> mptbase: ioc0: Initiating recovery >>> This I suspect is because of a lost interrupt. >>> >>>> BUG: unable to handle kernel NULL pointer dereference at 0000000000000948 >>> And this one looks to be a second bug: The MSI fault path is actually >>> causing this oops. >>> >>> James >>> >> Hi James, >> >> Kernel Bug is still reproducible with 2.6.26-rc9-git1 kernel, I tried booting with mpt_msi_enable=0 >> as boot paramenter, but the call trace remains the same >> >> oading mptbase.ko module[ 6.766853] Fusion MPT base driver 3.04.06 >> >> [ 6.783482] Copyright (c) 1999-2007 LSI Corporation >> Loading mptscsih.ko module >> Loading mptspi.ko module >> [ 6.813157] Fusion MPT SPI Host driver 3.04.06 >> [ 6.827369] ACPI: PCI Interrupt 0000:01:01.0[A] -> GSI 22 (level, low) -> IRQ 22 >> [ 6.850624] mptbase: ioc0: Initiating bringup >> [ 6.985601] ioc0: LSI53C1030 B2: Capabilities={Initiator} >> [ 7.002711] mptbase: ioc0: PCI-MSI enabled > ^^^^^^^^^^^^^^^ > > If you had successfully specified mpt_msi_enable=0 this line wouldn't > appear. > > My best guess is that you incorrectly specified it as a kernel command > line parameter rather than a module parameter. > > James > Hi James, Sorry my fault :(, the kernel bug is not reproducible after disabling it. -- Thanks & Regards, Kamalesh Babulal, Linux Technology Center, IBM, ISTL. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/