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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 7AA1EC43331 for ; Sun, 29 Mar 2020 12:09:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 53DC7206DB for ; Sun, 29 Mar 2020 12:09:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728178AbgC2MJW (ORCPT ); Sun, 29 Mar 2020 08:09:22 -0400 Received: from eu-smtp-delivery-151.mimecast.com ([207.82.80.151]:25506 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728160AbgC2MJV (ORCPT ); Sun, 29 Mar 2020 08:09:21 -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-232-Plif2OlMMmS4hBXoj5hg1A-1; Sun, 29 Mar 2020 13:09:17 +0100 X-MC-Unique: Plif2OlMMmS4hBXoj5hg1A-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; Sun, 29 Mar 2020 13:09:16 +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; Sun, 29 Mar 2020 13:09:16 +0100 From: David Laight To: 'Randy Dunlap' , Omar Kilani , "linux-kernel@vger.kernel.org" CC: Davidlohr Bueso Subject: RE: Weird issue with epoll and kernel >= 5.0 Thread-Topic: Weird issue with epoll and kernel >= 5.0 Thread-Index: AQHWBTYs4uAoSuVbY0K/kFw4ScJFNqhfeToQ Date: Sun, 29 Mar 2020 12:09:16 +0000 Message-ID: References: <34206eb5-1280-4aac-9a50-76f967646ca1@infradead.org> In-Reply-To: <34206eb5-1280-4aac-9a50-76f967646ca1@infradead.org> Accept-Language: en-GB, en-US Content-Language: 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-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org RnJvbTogUmFuZHkgRHVubGFwDQo+IFNlbnQ6IDI4IE1hcmNoIDIwMjAgMTk6MjINCi4uLg0KPiBU aGVyZSBoYXZlIGJlZW4gYXJvdW5kIDEwIGNoYW5nZXMgaW4gZnMvZXZlbnRwb2xsLmMgc2luY2Ug djUuMCB3YXMNCj4gcmVsZWFzZWQgaW4gTWFyY2gsIDIwMTksIHNvIGl0IHdvdWxkIGJlIGhlbHBm dWwgaWYgeW91IGNvdWxkIHRlc3QNCj4gdGhlIGxhdGVzdCBtYWlubGluZSBrZXJuZWwgdG8gc2Vl IGlmIHRoZSBwcm9ibGVtIGlzIHN0aWxsIHByZXNlbnQuDQoNCklzIHRoZXJlIGFueSBpbmZvIGFi b3V0IHRoZSBzY2VuYXJpb3MgdGhhdCB0aGUgZml4ZXMgYWZmZWN0Pw0KV2UndmUgYW4gYXBwbGlj YXRpb24gdGhhdCBjYW4gdXNlIGVwb2xsKCkgb3IgcG9sbCgpIGFuZCBJIHdvbmRlcg0KaWYgSSBz aG91bGQgbm90IGRlZmF1bHQgdG8gZXBvbGwoKSBvbiA1LjArIGtlcm5lbHMgdGhhdCBtaWdodCBi ZSBkb2RneS4NCg0KSXQgcmF0aGVyIGRlcGVuZHMgd2hldGhlciB3YWtldXBzIGp1c3QgZ2V0IGxv c3QgLSBidXQgdGhlIG5leHQNCnJ4IGRhdGEgd2lsbCB3YWtlIHRoaW5ncyB1cCwgb3Igd2hldGhl ciB0aGUgbGlua2VkIGxpc3RzIGdldA0KY29tcGxldGVseSBob3NlZCBhbmQgJ2FsbCBoZWxsJyBi cmVha3Mgb3V0IChvciBkb2Vzbid0KS4NCg0KSW4gb3VyIGNhc2UgdGhlcmUgaXMgb25seSBvbmUg cmVhZGVyIGFuZCB0aGUgZmQgYXJlIGFsbA0KVURQIHNvY2tldHMgKGFkZGVkIGFuZCByZW1vdmVk IHdoZW4gdGhlIHNvY2tldCBpcyBjcmVhdGVkL2Nsb3NlZCkuDQoNCglEYXZpZA0KDQotDQpSZWdp c3RlcmVkIEFkZHJlc3MgTGFrZXNpZGUsIEJyYW1sZXkgUm9hZCwgTW91bnQgRmFybSwgTWlsdG9u IEtleW5lcywgTUsxIDFQVCwgVUsNClJlZ2lzdHJhdGlvbiBObzogMTM5NzM4NiAoV2FsZXMpDQo=