Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751396AbdISNiS (ORCPT ); Tue, 19 Sep 2017 09:38:18 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:39914 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1750972AbdISNiR (ORCPT ); Tue, 19 Sep 2017 09:38:17 -0400 Subject: Re: [linux-next][DLPAR CPU][Oops] Bad kernel stack pointer From: Abdul Haleem To: Rob Herring Cc: Stephen Rothwell , linux-kernel , linux-next , Paul Mackerras , linuxppc-dev Date: Tue, 19 Sep 2017 19:04:09 +0530 In-Reply-To: References: <1505729319.6990.5.camel@abdul.in.ibm.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.10.4-0ubuntu1 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 x-cbid: 17091913-0008-0000-0000-00000282CA68 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00007762; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000230; SDB=6.00919286; UDB=6.00461854; IPR=6.00699512; BA=6.00005598; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00017209; XFM=3.00000015; UTC=2017-09-19 13:34:16 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17091913-0009-0000-0000-000036C09F49 Message-Id: <1505828049.30180.3.camel@abdul.in.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-09-19_05:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1707230000 definitions=main-1709190193 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 779 Lines: 28 On Mon, 2017-09-18 at 07:44 -0500, Rob Herring wrote: > On Mon, Sep 18, 2017 at 5:08 AM, Abdul Haleem > wrote: > > Hi, > > > > Dynamic CPU remove operation resulted in Kernel Panic on today's > > next-20170915 kernel. > > > > Machine Type: Power 7 PowerVM LPAR > > Kernel : 4.13.0-next-20170915 > > I assume this is not something new to 9/15 -next nor only in -next > because you also reported that 4.13.0 broke. Can you provide some > details on what version worked? 4.12? [linux-next][DLPAR CPU][Oops] Bad kernel stack pointer [mainline][DLPAR][Oops] OF: ERROR: Bad of_node_put() on /cpus The above issues are not reproducible with 4.12.0 (mainline), it is broken with 4.13.0 and next. -- Regard's Abdul Haleem IBM Linux Technology Centre