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Wed, 27 Jan 2021 10:04:59 +0000 (GMT) Received: from linux.ibm.com (unknown [9.145.68.25]) by d06av21.portsmouth.uk.ibm.com (Postfix) with ESMTPS id C4F1552050; Wed, 27 Jan 2021 10:04:57 +0000 (GMT) Date: Wed, 27 Jan 2021 12:04:54 +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: <20210127100454.GK196782@linux.ibm.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit 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_04:2021-01-26,2021-01-27 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 clxscore=1011 mlxlogscore=999 adultscore=0 priorityscore=1501 impostorscore=0 mlxscore=0 suspectscore=0 lowpriorityscore=0 phishscore=0 spamscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2101270053 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Lukasz, On Wed, Jan 27, 2021 at 10:22:29AM +0100, Łukasz Majczak wrote: > Crash after mm: fix initialization of struct page for holes in memory layout > > Hi, > I was trying to run v5.11-rc5 on my Samsung Chromebook Pro (Caroline), > 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 - and > 5.11-rc5), > bisect results points to: > > d3921cb8be29 mm: fix initialization of struct page for holes in memory 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/3517867bf39f07377c1a785b64a97066 > - my .config file (for a broken system): > https://gist.github.com/semihalf-majczak-lukasz/584b329f1bf3e43b53efe8e18b5da33c > > If there is anything I could add/do/test to help fix this please let me know. Chris Wilson also reported boot failures on several Chromebooks: https://lore.kernel.org/lkml/161160687463.28991.354987542182281928@build.alporthouse.com I presume serial console is not an option, so if you could boot with earlyprintk=vga and see if there is anything useful printed on the screen it would be really helpful. > Best regards > Lukasz -- Sincerely yours, Mike.