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[148.163.156.1]) by mx.google.com with ESMTPS id c8si24252096pfn.208.2019.06.04.06.39.38 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 04 Jun 2019 06:39:38 -0700 (PDT) Received-SPF: neutral (google.com: 148.163.156.1 is neither permitted nor denied by best guess record for domain of sachinp@linux.vnet.ibm.com) client-ip=148.163.156.1; Authentication-Results: mx.google.com; spf=neutral (google.com: 148.163.156.1 is neither permitted nor denied by best guess record for domain of sachinp@linux.vnet.ibm.com) smtp.mailfrom=sachinp@linux.vnet.ibm.com; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=ibm.com Received: from pps.filterd (m0098409.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x54DYPdM122474 for ; Tue, 4 Jun 2019 09:39:37 -0400 Received: from e06smtp01.uk.ibm.com (e06smtp01.uk.ibm.com [195.75.94.97]) by mx0a-001b2d01.pphosted.com with ESMTP id 2swq74evyn-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Tue, 04 Jun 2019 09:39:36 -0400 Received: from localhost by e06smtp01.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Tue, 4 Jun 2019 14:39:29 +0100 Received: from d06av26.portsmouth.uk.ibm.com (d06av26.portsmouth.uk.ibm.com [9.149.105.62]) by b06cxnps4075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x54DdS7J50987256 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 4 Jun 2019 13:39:28 GMT Received: from d06av26.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id AF048AE04D; Tue, 4 Jun 2019 13:39:28 +0000 (GMT) Received: from d06av26.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 69768AE056; Tue, 4 Jun 2019 13:39:27 +0000 (GMT) Received: from [9.102.21.242] (unknown [9.102.21.242]) by d06av26.portsmouth.uk.ibm.com (Postfix) with ESMTP; Tue, 4 Jun 2019 13:39:27 +0000 (GMT) Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 12.4 \(3445.104.11\)) Subject: Re: [POWERPC][next-20190603] Boot failure : Kernel BUG at mm/vmalloc.c:470 From: Sachin Sant In-Reply-To: <20190604202918.17a1e466@canb.auug.org.au> Date: Tue, 4 Jun 2019 19:09:26 +0530 Cc: linuxppc-dev@lists.ozlabs.org, linux-next@vger.kernel.org, linux-mm@kvack.org, "Uladzislau Rezki (Sony)" , linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable References: <9F9C0085-F8A4-4B66-802B-382119E34DF5@linux.vnet.ibm.com> <20190604202918.17a1e466@canb.auug.org.au> To: Stephen Rothwell X-Mailer: Apple Mail (2.3445.104.11) X-TM-AS-GCONF: 00 x-cbid: 19060413-4275-0000-0000-0000033C9377 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19060413-4276-0000-0000-0000384CA27D Message-Id: <88ADCAAE-4F1A-49FE-A454-BBAB12A88C70@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-06-04_09:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=854 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1906040092 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: > On 04-Jun-2019, at 3:59 PM, Stephen Rothwell = wrote: >=20 > Hi Sachin, >=20 > On Tue, 4 Jun 2019 14:45:43 +0530 Sachin Sant = wrote: >>=20 >> While booting linux-next [next-20190603] on a POWER9 LPAR following >> BUG is encountered and the boot fails. >>=20 >> If I revert the following 2 patches I no longer see this BUG message >>=20 >> 07031d37b2f9 ( mm/vmalloc.c: switch to WARN_ON() and move it under = unlink_va() ) >> 728e0fbf263e ( mm/vmalloc.c: get rid of one single unlink_va() when = merge ) >=20 > This latter patch has been fixed in today's linux-next =E2=80=A6 Thanks Stephen.=20 With today=E2=80=99s next (20190604) I no longer see this issue. Thanks -Sachin=