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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0DB5EE7D0AF for ; Thu, 21 Sep 2023 22:01:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230427AbjIUWBM (ORCPT ); Thu, 21 Sep 2023 18:01:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54004 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230317AbjIUWA4 (ORCPT ); Thu, 21 Sep 2023 18:00:56 -0400 Received: from eu-smtp-delivery-151.mimecast.com (eu-smtp-delivery-151.mimecast.com [185.58.85.151]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5BE4A2691 for ; Thu, 21 Sep 2023 14:57:45 -0700 (PDT) Received: from AcuMS.aculab.com (156.67.243.121 [156.67.243.121]) by relay.mimecast.com with ESMTP with both STARTTLS and AUTH (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id uk-mta-144-9yHIHy7UMl2pr0pfl-TvIA-1; Thu, 21 Sep 2023 22:57:27 +0100 X-MC-Unique: 9yHIHy7UMl2pr0pfl-TvIA-1 Received: from AcuMS.Aculab.com (10.202.163.4) by AcuMS.aculab.com (10.202.163.4) with Microsoft SMTP Server (TLS) id 15.0.1497.48; Thu, 21 Sep 2023 22:57:26 +0100 Received: from AcuMS.Aculab.com ([::1]) by AcuMS.aculab.com ([::1]) with mapi id 15.00.1497.048; Thu, 21 Sep 2023 22:57:26 +0100 From: David Laight To: 'Linus Torvalds' , Eric Biggers CC: "Jason A. Donenfeld" , "linux-kernel@vger.kernel.org" , "linux-crypto@vger.kernel.org" , Theodore Ts'o , "Dominik Brodowski" , Jann Horn Subject: RE: [RFC] Should writes to /dev/urandom immediately affect reads? Thread-Topic: [RFC] Should writes to /dev/urandom immediately affect reads? Thread-Index: AQHZ6/MdHsl+KD+hzUOipRl6ZArMFbAkCZmAgAADCACAAArEAIAAAxeAgAACfICAAbU2kA== Date: Thu, 21 Sep 2023 21:57:26 +0000 Message-ID: <4c5a6cd876d7499fa382ba74cd23cc08@AcuMS.aculab.com> References: <20230920060615.GA2739@sol.localdomain> <20230920193203.GA914@sol.localdomain> <20230920202126.GC914@sol.localdomain> 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 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-crypto@vger.kernel.org RnJvbTogTGludXMgVG9ydmFsZHMNCj4gU2VudDogMjAgU2VwdGVtYmVyIDIwMjMgMjE6NDENCj4g DQo+IE9uIFdlZCwgMjAgU2VwdCAyMDIzIGF0IDEzOjMyLCBMaW51cyBUb3J2YWxkcw0KPiA8dG9y dmFsZHNAbGludXgtZm91bmRhdGlvbi5vcmc+IHdyb3RlOg0KPiA+DQo+ID4gSXQgd2FzIHdoeSBJ IGFsc28gYXNrZWQgYWJvdXQgZW50cm9weS4gQmVjYXVzZSAqaWYqIHlvdSBhcmd1ZSB0aGF0IHRo ZQ0KPiA+IHVzZXItc3BhY2Ugd3JpdGUgY29udGFpbnMgZW50cm9weSwgdGhlbiB0aGF0IHdvdWxk IGJlIGEgcmVhc29uLg0KPiANCj4gVG8gY2xhcmlmeSAtIHRoZSBqaXR0ZXIgZW50cm9weSBxdWVz dGlvbiB3YXMgcmVsYXRlZCB0byB0aGF0IHNhbWUNCj4gYmFzaWMgaXNzdWU6IGlmIHRoaXMgd2Fz IG1lYW50IHRvIGJlIGEgd2F5IHRvIG1pdGlnYXRlIHRoZSBsYWNrIG9mDQo+IGppdHRlciBlbnRy b3B5IG9uIHNvbWUgcGxhdGZvcm0geW91IGNhcmUgYWJvdXQsIHRoYXQgd291bGQgYWdhaW4NCj4g cG9zc2libHkgYmUgYSByZWFzb24gdG8gY2FyZS4NCj4gDQo+IENvbnNpZGVyaW5nIHRoYXQgd2Ug YXBwYXJlbnRseSBoYXZlbid0IGNhcmVkIGZvciB0aGUgbGFzdCA3IHllYXJzLCBJJ20NCj4gc3Rp bGwgYSBiaXQgc3VycHJpc2VkLCBidXQgd2hhdGV2ZXIuDQo+IA0KPiBXaGF0IEkgKmRvbid0KiB3 YW50IGlzIGp1c3QgbW9yZSB2b29kb28gZGlzY3Vzc2lvbnMgYWJvdXQgL2Rldi8qcmFuZG9tDQo+ IGJlaGF2aW9yIHRoYXQgZG9lc24ndCBoYXZlIGEgdGVjaG5pY2FsIHJlYXNvbiBmb3IgaXQuDQoN ClRoaXMgbWlnaHQgYWxsIGJlIHJlbGF0ZWQgdG8gYW4gb25nb2luZyByZXBlYXQgb2YgdGhlICdo b3cgdG8gaW5pdGlhbGlzZQ0KL2Rldi91cmFuZG9tJyBvbiB0aGUgYnVzeWJveCBsaXN0Lg0KDQpT dWNoIHN5c3RlbXMgYXJlIG11Y2ggbW9yZSBsaWtlbHkgdG8gYmUgcnVubmluZyBjb21wbGV0ZWx5 IGppdHRlci1mcmVlDQpjcHUgdGhhdCBib290IGZyb20gZW1iZWRkZWQgc2VyaWFsIGZsYXNoIHdp dGggYWJzb2x1dGVseSBjb25zdGFudA0KYWNjZXNzIHRpbWVzLg0KVGhlIG9ubHkgd2F5IHlvdSBh cmUgZ29pbmcgdG8gZ2V0IGFueSBlbnRyb3B5IGVhcmx5IG9uIGlzIHRvIGhhdmUNCnNhdmVkIGl0 IGZyb20gdGhlIHByZXZpb3VzIGJvb3QuDQpJIGRvbid0IHRoaW5rIGl0IG1ha2VzIGFueSByZWFs IHNlbnNlIHNvIHNhdmUgaXQgdG9vIGVhcmx5IC0geW91IGp1c3QNCmVuZCB1cCB3aXRoIGFuIGVu Y29kZWQgJ2NvdW50IG9mIHRoZSBudW1iZXIgb2YgYm9vdHMnLg0KDQpBdCB0aGUgbW9tZW50IGl0 IGlzIHByZXR0eSBoYXJkIHRvIGFkZCB0aGUgc2F2ZWQgZW50cm9weS4NCkFuZCB5b3UgZG8gd2Fu dCBpdCB0byBiZSB1c2VkIGltbWVkaWF0ZWx5IC0gYmVjYXVzZSB3aGF0IHRoZQ0Ka2VybmVsIGhh cyBpdCBsaWtlbHkgdG8gYmUgcHJldHR5IGxpbWl0ZWQuDQoNCk5vdywgb25jZSB0aGUgc3RhcnR1 cCBzY3JpcHRzIGhhdmUgcnVuIHlvdSBtaWdodCBkZWNpZGUgdGhhdCBhbg0KaW1tZWRpYXRlIHJl aGFzaCBpc24ndCBuZWVkZWQuDQoNCglEYXZpZA0KDQotDQpSZWdpc3RlcmVkIEFkZHJlc3MgTGFr ZXNpZGUsIEJyYW1sZXkgUm9hZCwgTW91bnQgRmFybSwgTWlsdG9uIEtleW5lcywgTUsxIDFQVCwg VUsNClJlZ2lzdHJhdGlvbiBObzogMTM5NzM4NiAoV2FsZXMpDQo=