From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 07EDCC433DF for ; Tue, 13 Oct 2020 11:13:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ABEC921548 for ; Tue, 13 Oct 2020 11:13:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388471AbgJMLM7 (ORCPT ); Tue, 13 Oct 2020 07:12:59 -0400 Received: from eu-smtp-delivery-151.mimecast.com ([185.58.86.151]:59340 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727457AbgJMLM7 (ORCPT ); Tue, 13 Oct 2020 07:12:59 -0400 Received: from AcuMS.aculab.com (156.67.243.126 [156.67.243.126]) (Using TLS) by relay.mimecast.com with ESMTP id uk-mta-59-t8cDFw9jPqqR0wly0Oe9Jg-1; Tue, 13 Oct 2020 12:12:54 +0100 X-MC-Unique: t8cDFw9jPqqR0wly0Oe9Jg-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; Tue, 13 Oct 2020 12:12:54 +0100 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; Tue, 13 Oct 2020 12:12:54 +0100 From: David Laight To: 'harshal chaudhari' , Sudip Mukherjee , Greg KH CC: linux-kernel , Arnd Bergmann Subject: RE: [PATCH] char: ppdev: check if ioctl argument is present and valid Thread-Topic: [PATCH] char: ppdev: check if ioctl argument is present and valid Thread-Index: AQHWoT91EN0LvzjofE2muVvqxptK+6mVYKwQ Date: Tue, 13 Oct 2020 11:12:54 +0000 Message-ID: <0eb6f48d05624c8abaf00ae1bd4d88a9@AcuMS.aculab.com> References: <20201008182713.2764-1-harshalchau04@gmail.com> <20201009045734.GA112189@kroah.com> In-Reply-To: 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 RnJvbTogaGFyc2hhbCBjaGF1ZGhhcmkNCj4gU2VudDogMTMgT2N0b2JlciAyMDIwIDEwOjAxDQo+ IA0KPiBPbiBTYXQsIE9jdCAxMCwgMjAyMCBhdCAyOjQxIFBNIFN1ZGlwIE11a2hlcmplZQ0KPiA8 c3VkaXBtLm11a2hlcmplZUBnbWFpbC5jb20+IHdyb3RlOg0KPiA+DQo+ID4gT24gU2F0LCBPY3Qg MTAsIDIwMjAgYXQgMTowOCBBTSBTdWRpcCBNdWtoZXJqZWUNCj4gPiA8c3VkaXBtLm11a2hlcmpl ZUBnbWFpbC5jb20+IHdyb3RlOg0KPiA+ID4NCj4gPiA+IE9uIEZyaSwgT2N0IDksIDIwMjAgYXQg NTo1NyBBTSBHcmVnIEtIIDxncmVna2hAbGludXhmb3VuZGF0aW9uLm9yZz4gd3JvdGU6DQo+ID4g PiA+DQo+ID4gPiA+IE9uIFRodSwgT2N0IDA4LCAyMDIwIGF0IDExOjU3OjEzUE0gKzA1MzAsIEhh cnNoYWwgQ2hhdWRoYXJpIHdyb3RlOg0KPiA+ID4gPiA+IENoZWNraW5nIHRoZSBhcmd1bWVudCBw YXNzZWQgdG8gdGhlIGlvY3RsIGlzIHZhbGlkDQo+ID4gPiA+ID4gb3Igbm90LiBpZiBub3QgdGhl biByZXR1cm4gLUVJTlZBTC4NCj4gPiA+ID4NCj4gPiA+ID4gQWxvbmcgdGhlIHRoZSBjb21tZW50 cyB0aGF0IEFybmQgbWFkZSwgdGhpcyBpcyBub3QgdGhlIGNvcnJlY3QgdmFsdWUgdG8NCj4gPiA+ ID4gYmUgcmV0dXJuaW5nIGZyb20gYW4gaW9jdGwgd2hlbiB5b3UgZG9uJ3QgcGFzcyBpbiB0aGUg Y29ycmVjdCBjb21tYW5kLg0KPiANCj4gVGhhbmtzIEdyZWcgZm9yIHRoZSBjb21tZW50LiBpIGFt IGNoZWNraW5nIHdpdGggdmFsdWUNCj4gLUVGQVVMVCBub3csIGkgd2lsbCBnZXQgYmFjayB0byB5 b3Ugd2l0aCBjaGFuZ2VzIGFzIGNvbnNpZGVyYXRpb24NCj4gb2YgQXJuZCBjb21tZW50cy4NCj4g DQo+ID4gPiA+IEFuZCBpdCBkb2Vzbid0IG1hdGNoIHdoYXQgeW91ciBwYXRjaCBzYXlzLCBwbGVh c2UgYmUgY29uc2lzdGVudC4NCj4gDQo+IEkganVzdCB3YW50IHRvIHBlcmZvcm0gdGhlIEFyZ3Vt ZW50IGNoZWNrIGhlcmUgb25seS4gIGJhY2sgdGhlbiBpDQo+IHdhcyB0cnlpbmcgd2l0aCBhY2Nl c3Nfb2soKSBhcyB3ZWxsLCBidXQgYWNjZXNzX29rKCkgcmV0dXJuIHN1Y2Nlc3MNCj4gZXZlbiBp ZiBpIHBhc3NlZCBhIE5VTEwgcG9pbnRlci4gc28gdGhhdCdzIHdoeSBpIHJlbW92ZWQgaXQgZnJv bSBoZXJlLg0KDQpXaHkgYm90aGVyLg0KWW91IGhhdmUgdG8gY2hlY2sgdGhlIGNvcHlfZnJvbV91 c2VyKCkgd2hhdGV2ZXIgZWxzZSB5b3UgbWlnaHQgaGF2ZQ0KY2hlY2tlZCBlYXJsaWVkLg0KU28g d2h5IG9wdGltaXNlIGZvciB0aGUgZXJyb3IgY2FzZSB0aGF0IG5ldmVyIGhhcHBlbnMuDQoNCglE YXZpZA0KDQotDQpSZWdpc3RlcmVkIEFkZHJlc3MgTGFrZXNpZGUsIEJyYW1sZXkgUm9hZCwgTW91 bnQgRmFybSwgTWlsdG9uIEtleW5lcywgTUsxIDFQVCwgVUsNClJlZ2lzdHJhdGlvbiBObzogMTM5 NzM4NiAoV2FsZXMpDQo=