From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Serge E. Hallyn" Subject: Re: [2.6.30-git21] Network Namespace test failure Date: Wed, 24 Jun 2009 09:00:56 -0500 Message-ID: <20090624140056.GA11912@us.ibm.com> References: <4A422F1E.3050208@in.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: netdev , serue@linux.vnet.ibm.com, David Miller , matthltc@us.ibm.com To: Sachin Sant Return-path: Received: from e33.co.us.ibm.com ([32.97.110.151]:56867 "EHLO e33.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751301AbZFXOJZ (ORCPT ); Wed, 24 Jun 2009 10:09:25 -0400 Received: from d03relay03.boulder.ibm.com (d03relay03.boulder.ibm.com [9.17.195.228]) by e33.co.us.ibm.com (8.13.1/8.13.1) with ESMTP id n5OE7LfV021318 for ; Wed, 24 Jun 2009 08:07:21 -0600 Received: from d03av02.boulder.ibm.com (d03av02.boulder.ibm.com [9.17.195.168]) by d03relay03.boulder.ibm.com (8.13.8/8.13.8/NCO v9.2) with ESMTP id n5OE9Nm3078844 for ; Wed, 24 Jun 2009 08:09:23 -0600 Received: from d03av02.boulder.ibm.com (loopback [127.0.0.1]) by d03av02.boulder.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id n5OE9J2e028331 for ; Wed, 24 Jun 2009 08:09:19 -0600 Content-Disposition: inline In-Reply-To: <4A422F1E.3050208@in.ibm.com> Sender: netdev-owner@vger.kernel.org List-ID: Quoting Sachin Sant (sachinp@in.ibm.com): > While executing Newtork namespace tests from LTP[1] May release, > the machine crashed with following o/p. This is a PowerPC > blade(Power 6) ... > The corresponding c code (veth_xmit) is: > > 9cc: 3b 44 06 00 addi r26,r4,1536 > > cpu = smp_processor_id(); > stats = per_cpu_ptr(priv->stats, cpu); > 9d0: 79 6b 1f 24 rldicr r11,r11,3,60 > 9d4: 7d 4a 50 f8 not r10,r10 > rcv_stats = per_cpu_ptr(rcv_priv->stats, cpu); > 9d8: e9 3a 00 08 ld r9,8(r26) > priv = netdev_priv(dev); > rcv = priv->peer; > rcv_priv = netdev_priv(rcv); > > cpu = smp_processor_id(); > stats = per_cpu_ptr(priv->stats, cpu); > 9dc: 7f 8b 50 2a ldx r28,r11,r10 > rcv_stats = per_cpu_ptr(rcv_priv->stats, cpu); > ^^^^^ PC points to this instruction ^^^^^ > > I haven't tried these tests earlier so not sure if this > is a new problem or not. Let me know if there is any > other information you would like. Precise kernel version and .config? thanks, -serge