From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Laight Subject: RE: [PATCH 04/18] csum_and_copy_..._user(): pass 0xffffffff instead of 0 as initial sum Date: Wed, 22 Jul 2020 09:45:23 +0000 Message-ID: <773d830b89814ab8a92dc892ec6e65e2@AcuMS.aculab.com> References: <20200721202425.GA2786714@ZenIV.linux.org.uk> <20200721202549.4150745-1-viro@ZenIV.linux.org.uk> <20200721202549.4150745-4-viro@ZenIV.linux.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 Return-path: Received: from eu-smtp-delivery-151.mimecast.com ([207.82.80.151]:25919 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729025AbgGVJp1 (ORCPT ); Wed, 22 Jul 2020 05:45:27 -0400 In-Reply-To: Content-Language: en-US Sender: linux-arch-owner@vger.kernel.org List-ID: To: 'Linus Torvalds' , Al Viro Cc: Linux Kernel Mailing List , linux-arch RnJvbTogTGludXMgVG9ydmFsZHMNCj4gU2VudDogMjEgSnVseSAyMDIwIDIxOjU1DQo+IE9uIFR1 ZSwgSnVsIDIxLCAyMDIwIGF0IDE6MjUgUE0gQWwgVmlybyA8dmlyb0B6ZW5pdi5saW51eC5vcmcu dWs+IHdyb3RlOg0KPiA+DQo+ID4gUHJlcGFyYXRpb24gZm9yIHRoZSBjaGFuZ2Ugb2YgY2FsbGlu ZyBjb252ZW50aW9uczsgcmlnaHQgbm93IGFsbA0KPiA+IGNhbGxlcnMgcGFzcyAwIGFzIGluaXRp YWwgc3VtLiAgUGFzc2luZyAweGZmZmZmZmZmIGluc3RlYWQgeWllbGRzDQo+ID4gdGhlIHZhbHVl cyBjb21wYXJhYmxlIG1vZCAweGZmZmYgYW5kIGd1YXJhbnRlZXMgdGhhdCAwIHdpbGwgbm90DQo+ ID4gYmUgcmV0dXJuZWQgb24gc3VjY2Vzcy4NCj4gDQo+IFRoaXMgc2VlbXMgZGFuZ2Vyb3VzIHRv IG1lLg0KPiANCj4gTWF5YmUgc29tZSBpbXBsZW1lbnRhdGlvbiBkZXBlbmRzIG9uIHRoZSBmYWN0 IHRoYXQgdGhleSBhY3R1YWxseSBkbw0KPiB0aGUgY3N1bSAxNiBiaXRzIGF0IGEgdGltZSwgYW5k IG5ldmVyIHNlZSBhbiBvdmVyZmxvdyBpbiAiaW50IiwNCj4gYmVjYXVzZSB0aGV5IGtlZXAgZm9s ZGluZyB0aGluZ3MuDQo+IA0KPiBZb3Ugbm93IGJyZWFrIHRoYXQgYXNzdW1wdGlvbiwgYW5kIGdp dmUgaXQgYW4gaW5pdGlhbCB2YWx1ZSB0aGF0IHRoZQ0KPiBjc3VtIGNvZGUgaXRzZWxmIHdvdWxk IG5ldmVyIGdlbmVyYXRlLCBhbmQgd291bGRuJ3QgaGFuZGxlIHJpZ2h0Lg0KPiANCj4gQnV0IEkg ZGlkbid0IGNoZWNrLiBNYXliZSB3ZSBkb24ndCBoYXZlIGFueXRoaW5nIHRoYXQgc3R1cGlkIGlu IHRoZSBrZXJuZWwuDQoNCkl0IGlzbid0IG5lY2Vzc2FyaWx5IHN0dXBpZCA6LSkNCkEgNjRiaXQg c3VtIGNhbiBiZSByZWR1Y2VkIHRvIDE2Yml0cyB1c2luZyBzaGlmdHMgYW5kIGFkZHMNCihhcyB1 cyB1c3VhbGx5IGRvbmUpIG9mIHVzaW5nICdzdW0gJSAweGZmZmYnLg0KUHJvdmlkZWQgdGhlIGNv bXBpbGVyIHVzZXMgJ211bHRpcGx5IGJ5IHJlY2lwcm9jYWwnIHRoZSBjb2RlDQppc24ndCB0aGF0 IGJhZCAtIGl0IG1pZ2h0IGV2ZW4gYmUgZGlmZmljdWx0IHRvIHNheSB3aGljaCBpcyBmYXN0ZXIu DQpIb3dldmVyIHRoYXQgbWFrZXMgdGhlIG91dHB1dCBkb21haW4gMC4uZmZmZSBub3QgMS4uZmZm Zi4NCg0KVGhlIGNoZWNrc3VtIGdlbmVyYXRpb24gY29kZSByZWFsbHkgbmVlZHMgdG8ga25vdyB3 aGljaCBpcyB1c2VkLg0KU28gaXQgaXMgYmVzdCBuZXZlciB0byB1c2UgdGhlICUgdmVyc2lvbi4N CklmIHRoZSBzdW0gaXMga25vd24gdG8gYmUgMS4uMHhmZmZmIHRoZW4gYWZ0ZXIgaW52ZXJzaW9u IGl0IGlzDQowLi5mZmZlIGJ1dCB0aGUgcmVxdWlyZWQgZG9tYWluIGlzIDEuLmZmZmYuDQpUaGlz IGNhbiBiZSBmaXhlZCBieSBhZGRpbmcgMSAtIHByb3ZpZGVkIGEgY29tcGVuc2F0aW5nIDEgaXMN CmFkZGVkIGluIGJlZm9yZSB0aGUgaW52ZXJzaW9uLg0KVGhlIGVhc3kgcGxhY2UgdG8gZG8gdGhp cyBpcyB0byBmZWVkIDEgKG5vdCAwIG9yIH4wKSBpbnRvIHRoZQ0KZmlyc3QgY2hlY2tzdW0gYmxv Y2suDQoNCglEYXZpZA0KDQotDQpSZWdpc3RlcmVkIEFkZHJlc3MgTGFrZXNpZGUsIEJyYW1sZXkg Um9hZCwgTW91bnQgRmFybSwgTWlsdG9uIEtleW5lcywgTUsxIDFQVCwgVUsNClJlZ2lzdHJhdGlv biBObzogMTM5NzM4NiAoV2FsZXMpDQo=