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 A0077C38145 for ; Tue, 6 Sep 2022 10:51:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233952AbiIFKuq (ORCPT ); Tue, 6 Sep 2022 06:50:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46886 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239772AbiIFKtx (ORCPT ); Tue, 6 Sep 2022 06:49:53 -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 626CA7C53E for ; Tue, 6 Sep 2022 03:48:22 -0700 (PDT) Received: from AcuMS.aculab.com (156.67.243.121 [156.67.243.121]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id uk-mta-170--JVNHMPkOBmnvHtxzro39Q-1; Tue, 06 Sep 2022 11:48:17 +0100 X-MC-Unique: -JVNHMPkOBmnvHtxzro39Q-1 Received: from AcuMS.Aculab.com (10.202.163.6) by AcuMS.aculab.com (10.202.163.6) with Microsoft SMTP Server (TLS) id 15.0.1497.38; Tue, 6 Sep 2022 11:48:16 +0100 Received: from AcuMS.Aculab.com ([::1]) by AcuMS.aculab.com ([::1]) with mapi id 15.00.1497.040; Tue, 6 Sep 2022 11:48:16 +0100 From: David Laight To: 'Alexey Dobriyan' CC: "netdev@vger.kernel.org" , "stable@vger.kernel.org" , Eric Dumazet , "viro@zeniv.linux.org.uk" , "akpm@linux-foundation.org" Subject: RE: setns() affecting other threads in 5.10.132 and 6.0 Thread-Topic: setns() affecting other threads in 5.10.132 and 6.0 Thread-Index: AdjAZGr2bm2+BO9aR228APTLkn1hUgApqGgQAA6DpAAAJbwx0A== Date: Tue, 6 Sep 2022 10:48:16 +0000 Message-ID: <6204a74ef41a4463a790962d0409d0bc@AcuMS.aculab.com> References: 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: netdev@vger.kernel.org RnJvbTogQWxleGV5IERvYnJpeWFuDQo+IFNlbnQ6IDA1IFNlcHRlbWJlciAyMDIyIDE4OjMzDQo+ ID4gPiAtLS0tLU9yaWdpbmFsIE1lc3NhZ2UtLS0tLQ0KPiA+ID4gRnJvbTogRGF2aWQgTGFpZ2h0 IDxEYXZpZC5MYWlnaHRAQUNVTEFCLkNPTT4NCj4gPiA+IFNlbnQ6IDA0IFNlcHRlbWJlciAyMDIy IDE1OjA1DQo+ID4gPg0KPiA+ID4gU29tZXRpbWUgYWZ0ZXIgNS4xMC4xMDUgKDUuMTAuMTMyIGFu ZCA2LjApIHRoZXJlIGlzIGEgY2hhbmdlIHRoYXQNCj4gPiA+IG1ha2VzIHNldG5zKG9wZW4oIi9w cm9jLzEvbnMvbmV0IikpIGluIHRoZSBtYWluIHByb2Nlc3MgY2hhbmdlcw0KPiA+ID4gdGhlIGJl aGF2aW91ciBvZiBvdGhlciBwcm9jZXNzIHRocmVhZHMuDQo+IA0KPiBOb3QgYWdhaW4uLi4NCg0K SSd2ZSByZWFsaXNlZCB3aGF0IGlzIGdvaW5nIG9uLg0KSXQgcmVhbGx5IGlzbid0IG9idmlvdXMg YXQgYWxsLg0KUXVpdGUgcG9zc2libHkgdGhlIGxhc3QgY2hhbmdlIGRpZCBmaXggaXQgLSBldmVu IHRob3VnaA0KaXQgYnJva2Ugb3VyIGNvZGUuDQoNCi9wcm9jL25ldCBpcyBhIHN5bWxpbmsgdG8g L3Byb2Mvc2VsZi9uZXQuDQpCdXQgdGhhdCBpc24ndCB3aGF0IHRoZSBjb2RlIHdhbnRzIHRvIG9w ZW4uDQpXaGF0IGl0IG5lZWRzIGlzIC9wcm9jL3NlbGYvdGFzay9zZWxmL25ldC4NCkJ1dCB0aGVy ZSBpc24ndCBhICdzZWxmJyBpbiAvcHJvYy9zZWxmL3Rhc2suDQpXaGljaCBtYWtlcyBpdCBhbGwg YSBiaXQgdGVkaW91cyAoZXNwZWNpYWxseSB3aXRob3V0IGdldHRpZCgpIGluIGdsaWJjKS4NCihU aGlzIGlzIGEgYnVzeWJveC9idWlsZHJvb3Qgc3lzdGVtLCBtYXliZSBJIGNvdWxkIGFkZCBpdCEp DQoNCkknZCBwcm9iYWJseSBoYXZlIG5vdGljZWQgZWFybGllciBpZiB0aGUgL3Byb2MvbmV0DQpz eW1saW5rIGRpZG4ndCBleGlzdC4NCkkgZ3Vlc3MgdGhhdCBpcyBmb3IgY29tcGF0aWJpbGl0eSB3 aXRoIHByZS1uZXRucyBrZXJuZWxzLg0KDQoJRGF2aWQNCg0KLQ0KUmVnaXN0ZXJlZCBBZGRyZXNz IExha2VzaWRlLCBCcmFtbGV5IFJvYWQsIE1vdW50IEZhcm0sIE1pbHRvbiBLZXluZXMsIE1LMSAx UFQsIFVLDQpSZWdpc3RyYXRpb24gTm86IDEzOTczODYgKFdhbGVzKQ0K