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Wed, 27 Jan 2021 11:19:03 GMT Received: from d06av25.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 6ED5811C04C; Wed, 27 Jan 2021 11:19:03 +0000 (GMT) Received: from d06av25.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id D837A11C04A; Wed, 27 Jan 2021 11:19:00 +0000 (GMT) Received: from linux.ibm.com (unknown [9.145.191.214]) by d06av25.portsmouth.uk.ibm.com (Postfix) with ESMTPS; Wed, 27 Jan 2021 11:19:00 +0000 (GMT) Date: Wed, 27 Jan 2021 13:18:58 +0200 From: Mike Rapoport To: =?utf-8?Q?=C5=81ukasz?= Majczak Cc: Andrew Morton , linux-mm@kvack.org, linux-kernel@vger.kernel.org, =?utf-8?B?UmFkb3PFgmF3?= Biernacki , Marcin Wojtas , Alex Levin , Guenter Roeck , Jesse Barnes , Chris Wilson , "Sarvela, Tomi P" Subject: Re: PROBLEM: Crash after mm: fix initialization of struct page for holes in memory layout Message-ID: <20210127111858.GA273567@linux.ibm.com> References: <20210127100454.GK196782@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.343,18.0.737 definitions=2021-01-27_04:2021-01-27,2021-01-27 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 priorityscore=1501 mlxlogscore=999 mlxscore=0 impostorscore=0 adultscore=0 clxscore=1015 suspectscore=0 spamscore=0 malwarescore=0 bulkscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2101270056 Content-Transfer-Encoding: quoted-printable 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 Wed, Jan 27, 2021 at 11:08:17AM +0100, =C5=81ukasz Majczak wrote: > Hi Mike, >=20 > Actually I have a serial console attached (via servo device), but > there is no output :( and also the reboot/crash is very fast/immediate > after power on. =20 If you boot with earlyprintk=3Dserial are there any messages? > Best regards > Lukasz >=20 > =C5=9Br., 27 sty 2021 o 11:05 Mike Rapoport napisa= =C5=82(a): > > > > Hi Lukasz, > > > > On Wed, Jan 27, 2021 at 10:22:29AM +0100, =C5=81ukasz Majczak wrote: > > > Crash after mm: fix initialization of struct page for holes in memo= ry layout > > > > > > Hi, > > > I was trying to run v5.11-rc5 on my Samsung Chromebook Pro (Carolin= e), > > > but I've noticed it has crashed - unfortunately it seems to happen = at > > > a very early stage - No output to the console nor to the screen, so= I > > > have started a bisect (between 5.11-rc4 - which works just find - a= nd > > > 5.11-rc5), > > > bisect results points to: > > > > > > d3921cb8be29 mm: fix initialization of struct page for holes in mem= ory layout > > > > > > Reproduction is just to build and load the kernel. > > > > > > If it will help any how I am attaching: > > > - /proc/cpuinfo (from healthy system): > > > https://gist.github.com/semihalf-majczak-lukasz/3517867bf39f07377c1= a785b64a97066 > > > - my .config file (for a broken system): > > > https://gist.github.com/semihalf-majczak-lukasz/584b329f1bf3e43b53e= fe8e18b5da33c > > > > > > If there is anything I could add/do/test to help fix this please le= t me know. > > > > Chris Wilson also reported boot failures on several Chromebooks: > > > > https://lore.kernel.org/lkml/161160687463.28991.354987542182281928@bu= ild.alporthouse.com > > > > I presume serial console is not an option, so if you could boot with > > earlyprintk=3Dvga and see if there is anything useful printed on the = screen > > it would be really helpful. > > > > > Best regards > > > Lukasz > > > > -- > > Sincerely yours, > > Mike. --=20 Sincerely yours, Mike.