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Thu, 7 Jan 2021 05:08:24 -0500 Received: from AcuMS.aculab.com (156.67.243.126 [156.67.243.126]) (Using TLS) by relay.mimecast.com with ESMTP id uk-mta-175-Vj4IkFWbMb6gbZ89vwsbFw-1; Thu, 07 Jan 2021 10:06:44 +0000 X-MC-Unique: Vj4IkFWbMb6gbZ89vwsbFw-1 Received: from AcuMS.Aculab.com (fd9f:af1c:a25b:0:43c:695e:880f:8750) by AcuMS.aculab.com (fd9f:af1c:a25b:0:43c:695e:880f:8750) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Thu, 7 Jan 2021 10:06:43 +0000 Received: from AcuMS.Aculab.com ([fe80::43c:695e:880f:8750]) by AcuMS.aculab.com ([fe80::43c:695e:880f:8750%12]) with mapi id 15.00.1347.000; Thu, 7 Jan 2021 10:06:43 +0000 From: David Laight To: 'Randy Dunlap' , Josh Poimboeuf , Alexander Viro CC: "linux-kernel@vger.kernel.org" , "Peter Zijlstra" Subject: RE: [PATCH] mm/uaccess: Use 'unsigned long' to placate UBSAN warnings, again Thread-Topic: [PATCH] mm/uaccess: Use 'unsigned long' to placate UBSAN warnings, again Thread-Index: AQHW2PwqxtfWuUwKYEWRf8eoCF4YMqocBqaw Date: Thu, 7 Jan 2021 10:06:43 +0000 Message-ID: References: <590998aa9cc50f431343f76cae72b2abf8ac1fdd.1608699683.git.jpoimboe@redhat.com> <6823854f-019f-f9db-7fd8-da8e7a0016d1@infradead.org> In-Reply-To: <6823854f-019f-f9db-7fd8-da8e7a0016d1@infradead.org> Accept-Language: en-GB, en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.202.205.107] MIME-Version: 1.0 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=C51A453 smtp.mailfrom=david.laight@aculab.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: aculab.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org RnJvbTogUmFuZHkgRHVubGFwDQo+IFNlbnQ6IDIzIERlY2VtYmVyIDIwMjAgMDc6MTkNCj4gDQo+ IE9uIDEyLzIyLzIwIDk6MDQgUE0sIEpvc2ggUG9pbWJvZXVmIHdyb3RlOg0KPiA+IEdDQyA3IGhh cyBhIGtub3duIGJ1ZyB3aGVyZSBVQlNBTiBpZ25vcmVzICctZndyYXB2JyBhbmQgZ2VuZXJhdGVz IGZhbHNlDQo+ID4gc2lnbmVkLW92ZXJmbG93LVVCIHdhcm5pbmdzLiAgVGhlIHR5cGUgbWlzbWF0 Y2ggYmV0d2VlbiAnaScgYW5kDQo+ID4gJ25yX3NlZ3MnIGluIGNvcHlfY29tcGF0X2lvdmVjX2Zy b21fdXNlcigpIGlzIGNhdXNpbmcgc3VjaCBhIHdhcm5pbmcsDQo+ID4gd2hpY2ggYWxzbyBoYXBw ZW5zIHRvIHZpb2xhdGUgdWFjY2VzcyBydWxlczoNCj4gPg0KPiA+ICAgbGliL2lvdl9pdGVyLm86 IHdhcm5pbmc6IG9ianRvb2w6IGlvdmVjX2Zyb21fdXNlcigpKzB4MjJkOiBjYWxsIHRvIF9fdWJz YW5faGFuZGxlX2FkZF9vdmVyZmxvdygpDQo+IHdpdGggVUFDQ0VTUyBlbmFibGVkDQo+ID4NCj4g PiBGaXggaXQgYnkgbWFraW5nIHRoZSB2YXJpYWJsZSB0eXBlcyBtYXRjaC4NCj4gPg0KPiA+IFRo aXMgaXMgc2ltaWxhciB0byBhIHByZXZpb3VzIGNvbW1pdDoNCj4gPg0KPiA+ICAgMjlkYTkzZmVh M2VhICgibW0vdWFjY2VzczogVXNlICd1bnNpZ25lZCBsb25nJyB0byBwbGFjYXRlIFVCU0FOIHdh cm5pbmdzIG9uIG9sZGVyIEdDQyB2ZXJzaW9ucyIpDQo+ID4NCj4gPiBSZXBvcnRlZC1ieTogUmFu ZHkgRHVubGFwIDxyZHVubGFwQGluZnJhZGVhZC5vcmc+DQo+ID4gU2lnbmVkLW9mZi1ieTogSm9z aCBQb2ltYm9ldWYgPGpwb2ltYm9lQHJlZGhhdC5jb20+DQo+IA0KPiBBbGwgZ29vZC4gVGhhbmtz Lg0KPiANCj4gQWNrZWQtYnk6IFJhbmR5IER1bmxhcCA8cmR1bmxhcEBpbmZyYWRlYWQub3JnPiAj IGJ1aWxkLXRlc3RlZA0KDQpGV0lXIEkndmUgdGVzdGVkIHRoZSBlcXVpdmFsZW50IGNoYW5nZSBs b2NhbGx5Lg0KSXQgZ2VuZXJhdGVzIHJhdGhlciBiZXR0ZXIgY29kZSBvbiBhbWQ2NC4NCihZb3Ug ZG9uJ3Qgd2FudCB0byBpbmRleCBhcnJheXMgd2l0aCAnaW50JyB1bmxlc3MgeW91IHJlYWxseSBo YXZlIHRvLikNClNvIHByb2JhYmx5Og0KDQpBY2tlZC1ieTogRGF2aWQgTGFpZ2h0IDxkYXZpZC5s YWlnaHRAYWN1bGFiLmNvbT4NCg0KCURhdmlkDQoNCj4gDQo+IA0KPiA+IC0tLQ0KPiA+ICBsaWIv aW92X2l0ZXIuYyB8IDMgKystDQo+ID4gIDEgZmlsZSBjaGFuZ2VkLCAyIGluc2VydGlvbnMoKyks IDEgZGVsZXRpb24oLSkNCj4gPg0KPiA+IGRpZmYgLS1naXQgYS9saWIvaW92X2l0ZXIuYyBiL2xp Yi9pb3ZfaXRlci5jDQo+ID4gaW5kZXggMTYzNTExMWM1YmQyLi4yZTZhNDJmNWQxZGYgMTAwNjQ0 DQo+ID4gLS0tIGEvbGliL2lvdl9pdGVyLmMNCj4gPiArKysgYi9saWIvaW92X2l0ZXIuYw0KPiA+ IEBAIC0xNjU2LDcgKzE2NTYsOCBAQCBzdGF0aWMgaW50IGNvcHlfY29tcGF0X2lvdmVjX2Zyb21f dXNlcihzdHJ1Y3QgaW92ZWMgKmlvdiwNCj4gPiAgew0KPiA+ICAJY29uc3Qgc3RydWN0IGNvbXBh dF9pb3ZlYyBfX3VzZXIgKnVpb3YgPQ0KPiA+ICAJCShjb25zdCBzdHJ1Y3QgY29tcGF0X2lvdmVj IF9fdXNlciAqKXV2ZWM7DQo+ID4gLQlpbnQgcmV0ID0gLUVGQVVMVCwgaTsNCj4gPiArCWludCBy ZXQgPSAtRUZBVUxUOw0KPiA+ICsJdW5zaWduZWQgbG9uZyBpOw0KPiA+DQo+ID4gIAlpZiAoIXVz ZXJfYWNjZXNzX2JlZ2luKHV2ZWMsIG5yX3NlZ3MgKiBzaXplb2YoKnV2ZWMpKSkNCj4gPiAgCQly ZXR1cm4gLUVGQVVMVDsNCj4gPg0KPiANCj4gDQo+IC0tDQo+IH5SYW5keQ0KDQotDQpSZWdpc3Rl cmVkIEFkZHJlc3MgTGFrZXNpZGUsIEJyYW1sZXkgUm9hZCwgTW91bnQgRmFybSwgTWlsdG9uIEtl eW5lcywgTUsxIDFQVCwgVUsNClJlZ2lzdHJhdGlvbiBObzogMTM5NzM4NiAoV2FsZXMpDQo=