From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-it0-f70.google.com (mail-it0-f70.google.com [209.85.214.70]) by kanga.kvack.org (Postfix) with ESMTP id 1C4866B2A41 for ; Thu, 23 Aug 2018 09:14:14 -0400 (EDT) Received: by mail-it0-f70.google.com with SMTP id r19-v6so5214058itc.4 for ; Thu, 23 Aug 2018 06:14:14 -0700 (PDT) Received: from NAM02-SN1-obe.outbound.protection.outlook.com (mail-sn1nam02on0134.outbound.protection.outlook.com. [104.47.36.134]) by mx.google.com with ESMTPS id b2-v6si3339108itg.7.2018.08.23.06.14.12 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 23 Aug 2018 06:14:12 -0700 (PDT) From: Pasha Tatashin Subject: Re: A crash on ARM64 in move_freepages_block due to uninitialized pages in reserved memory Date: Thu, 23 Aug 2018 13:14:10 +0000 Message-ID: References: <20180821104418.GA16611@dhcp22.suse.cz> <20180823111024.GC29735@dhcp22.suse.cz> <20180823112359.GE29735@dhcp22.suse.cz> <777276b8-9cd6-da4b-d1d9-c60f96a58122@microsoft.com> In-Reply-To: <777276b8-9cd6-da4b-d1d9-c60f96a58122@microsoft.com> Content-Language: en-US Content-Type: text/plain; charset="utf-8" Content-ID: <106B54EF74AA60458DBFF1B3637A8479@namprd21.prod.outlook.com> Content-Transfer-Encoding: base64 MIME-Version: 1.0 Sender: owner-linux-mm@kvack.org List-ID: To: Michal Hocko , Mikulas Patocka Cc: James Morse , Catalin Marinas , Will Deacon , "linux-arm-kernel@lists.infradead.org" , "linux-mm@kvack.org" DQoNCk9uIDgvMjMvMTggOToxMyBBTSwgUGF2ZWwgVGF0YXNoaW4gd3JvdGU6DQo+IE9uIDgvMjMv MTggNzoyMyBBTSwgTWljaGFsIEhvY2tvIHdyb3RlOg0KPj4gT24gVGh1IDIzLTA4LTE4IDA3OjE2 OjM0LCBNaWt1bGFzIFBhdG9ja2Egd3JvdGU6DQo+Pj4NCj4+Pg0KPj4+IE9uIFRodSwgMjMgQXVn IDIwMTgsIE1pY2hhbCBIb2NrbyB3cm90ZToNCj4+Pg0KPj4+PiBPbiBUaHUgMjMtMDgtMTggMDc6 MDI6MzcsIE1pa3VsYXMgUGF0b2NrYSB3cm90ZToNCj4+Pj4gWy4uLl0NCj4+Pj4+IFRoaXMgY3Jh c2ggaXMgbm90IGZyb20gLUVOT0VOVC4gSXQgY3Jhc2hlcyBiZWNhdXNlIHBhZ2UtPmNvbXBvdW5k X2hlYWQgaXMgDQo+Pj4+PiAweGZmZmZmZmZmZmZmZmZmZmYgKHNlZSBiZWxvdykuDQo+Pj4+Pg0K Pj4+Pj4gSWYgSSBlbmFibGUgQ09ORklHX0RFQlVHX1ZNLCBJIGFsc28gZ2V0IFZNX0JVRy4NCj4+ Pj4NCj4+Pj4gVGhpcyBzbWVsbHMgbGlrZSB0aGUgc3RydWN0IHBhZ2UgaXMgbm90IGluaXRpYWxp emVkIHByb3Blcmx5LiBIb3cgaXMNCj4+Pj4gdGhpcyBtZW1vcnkgcmFuZ2UgYWRkZWQ/IEkgbWVh biBpcyBpdCBicm91Z2h0IHVwIGJ5IHRoZSBtZW1vcnkgaG90cGx1Zw0KPj4+PiBvciBkdXJpbmcg dGhlIGJvb3Q/DQo+IA0KPiBJIGJlbGlldmUgaXQgaXMgZHVlIHRvIHVuaW5pdGlhbGl6ZWQgc3Ry dWN0IHBhZ2VzLiBNaWt1bGFzLCBjb3VsZCB5b3UNCj4gcGxlYXNlIHByb3ZpZGUgY29uZmlnIGZp bGUsIGFuZCBhbHNvIHRoZSBmdWxsIGNvbnNvbGUgb3V0cHV0Lg0KPiANCj4gUGxlYXNlIG1ha2Ug c3VyZSB0aGF0IHlvdSBoYXZlOg0KPiBDT05GSUdfREVCVUdfVk09eQ0KPiBDT05GSUdfQVJDSF9I QVNfREVCVUdfVklSVFVBTD15DQoNCkkgbWVhbnQ6DQpDT05GSUdfREVCVUdfVk09eQ0KQ09ORklH X0RFQlVHX1ZNX1BHRkxBR1M9eQ0KDQo+IA0KPiBJIHdvbmRlciB3aGF0IGtpbmQgb2Ygc3RydWN0 IHBhZ2UgbWVtb3J5IGxheW91dCBpcyB1c2VkLCBhbmQgYWxzbyBpZg0KPiBkZWZlcnJlZCBzdHJ1 Y3QgcGFnZXMgYXJlIGVuYWJsZWQgb3Igbm90Lg0KPiANCj4gSGF2ZSB5b3UgdHJpZWQgYmlzZWN0 aW5nIHRoZSBwcm9ibGVtPw0KPiANCj4gVGhhbmsgeW91LA0KPiBQYXZlbA0KPiA=