From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sachin Sant Subject: Re: [Powerpc/SLQB] Next June 06 : BUG during scsi initialization Date: Fri, 12 Jun 2009 11:14:10 +0530 Message-ID: <4A31EB2A.9080003@in.ibm.com> References: <20090511161442.3e9d9cb9.sfr@canb.auug.org.au> <4A081002.4050802@in.ibm.com> <4A2909E8.6000507@in.ibm.com> <4A2D001E.5060802@in.ibm.com> <20090609141903.GE15219@wotan.suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from e23smtp05.au.ibm.com ([202.81.31.147]:37748 "EHLO e23smtp05.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751323AbZFLFoN (ORCPT ); Fri, 12 Jun 2009 01:44:13 -0400 Received: from d23relay01.au.ibm.com (d23relay01.au.ibm.com [202.81.31.243]) by e23smtp05.au.ibm.com (8.13.1/8.13.1) with ESMTP id n5C5g54t010965 for ; Fri, 12 Jun 2009 15:42:05 +1000 Received: from d23av03.au.ibm.com (d23av03.au.ibm.com [9.190.234.97]) by d23relay01.au.ibm.com (8.13.8/8.13.8/NCO v9.2) with ESMTP id n5C5iDIL422156 for ; Fri, 12 Jun 2009 15:44:14 +1000 Received: from d23av03.au.ibm.com (loopback [127.0.0.1]) by d23av03.au.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id n5C5iDrF010730 for ; Fri, 12 Jun 2009 15:44:13 +1000 In-Reply-To: <20090609141903.GE15219@wotan.suse.de> Sender: linux-next-owner@vger.kernel.org List-ID: To: Nick Piggin Cc: Pekka J Enberg , Stephen Rothwell , linux-next@vger.kernel.org, linuxppc-dev@ozlabs.org Nick Piggin wrote: > I can't really work it out. It seems to be the kmem_cache_cache which has > a problem, but there have already been lots of caches created and even > this samw cache_node already used right beforehand with no problem. > > Unless a CPU or node comes up or something right at this point or the > caller is scheduled onto a different CPU... oopses seem to all > have CPU#1, wheras boot CPU is probably #0 (these CPUs are node 0 > and memory is only on node 1 and 2 where there are no CPUs if I read > correctly). > > I still can't see the reason for the failure, but can you try this > patch please and show dmesg? I was able to boot yesterday's next (20090611) on this machine. Not sure what changed(may be because of merge with linus tree), but i can no longer recreate this issue with next 20090611. I was consistently able to recreate the problem till June 10th next tree. Thanks -Sachin -- --------------------------------- Sachin Sant IBM Linux Technology Center India Systems and Technology Labs Bangalore, India --------------------------------- From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ozlabs.org (ozlabs.org [203.10.76.45]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "mx.ozlabs.org", Issuer "CA Cert Signing Authority" (verified OK)) by bilbo.ozlabs.org (Postfix) with ESMTPS id C84BDB71C2 for ; Fri, 12 Jun 2009 15:44:15 +1000 (EST) Received: from e23smtp06.au.ibm.com (e23smtp06.au.ibm.com [202.81.31.148]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "e23smtp06.au.ibm.com", Issuer "Equifax" (verified OK)) by ozlabs.org (Postfix) with ESMTPS id A3317DDDA0 for ; Fri, 12 Jun 2009 15:44:15 +1000 (EST) Received: from d23relay01.au.ibm.com (d23relay01.au.ibm.com [202.81.31.243]) by e23smtp06.au.ibm.com (8.13.1/8.13.1) with ESMTP id n5C5i8xR011891 for ; Fri, 12 Jun 2009 15:44:08 +1000 Received: from d23av03.au.ibm.com (d23av03.au.ibm.com [9.190.234.97]) by d23relay01.au.ibm.com (8.13.8/8.13.8/NCO v9.2) with ESMTP id n5C5iD4g336260 for ; Fri, 12 Jun 2009 15:44:13 +1000 Received: from d23av03.au.ibm.com (loopback [127.0.0.1]) by d23av03.au.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id n5C5iDrB010730 for ; Fri, 12 Jun 2009 15:44:13 +1000 Message-ID: <4A31EB2A.9080003@in.ibm.com> Date: Fri, 12 Jun 2009 11:14:10 +0530 From: Sachin Sant MIME-Version: 1.0 To: Nick Piggin Subject: Re: [Powerpc/SLQB] Next June 06 : BUG during scsi initialization References: <20090511161442.3e9d9cb9.sfr@canb.auug.org.au> <4A081002.4050802@in.ibm.com> <4A2909E8.6000507@in.ibm.com> <4A2D001E.5060802@in.ibm.com> <20090609141903.GE15219@wotan.suse.de> In-Reply-To: <20090609141903.GE15219@wotan.suse.de> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Cc: Stephen Rothwell , Pekka J Enberg , linux-next@vger.kernel.org, linuxppc-dev@ozlabs.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Nick Piggin wrote: > I can't really work it out. It seems to be the kmem_cache_cache which has > a problem, but there have already been lots of caches created and even > this samw cache_node already used right beforehand with no problem. > > Unless a CPU or node comes up or something right at this point or the > caller is scheduled onto a different CPU... oopses seem to all > have CPU#1, wheras boot CPU is probably #0 (these CPUs are node 0 > and memory is only on node 1 and 2 where there are no CPUs if I read > correctly). > > I still can't see the reason for the failure, but can you try this > patch please and show dmesg? I was able to boot yesterday's next (20090611) on this machine. Not sure what changed(may be because of merge with linus tree), but i can no longer recreate this issue with next 20090611. I was consistently able to recreate the problem till June 10th next tree. Thanks -Sachin -- --------------------------------- Sachin Sant IBM Linux Technology Center India Systems and Technology Labs Bangalore, India ---------------------------------