Received: by 2002:a05:6358:d09b:b0:dc:cd0c:909e with SMTP id jc27csp219027rwb; Wed, 9 Nov 2022 01:14:35 -0800 (PST) X-Google-Smtp-Source: AMsMyM68Om0FpQ4euFzTVJSS/h1+4y1pMve2HekF9PMwVumE8WMfcRGzZx/1fywnWjuzQb2eG4Ra X-Received: by 2002:a17:902:be18:b0:178:b9c9:97b8 with SMTP id r24-20020a170902be1800b00178b9c997b8mr58451897pls.38.1667985274999; Wed, 09 Nov 2022 01:14:34 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1667985274; cv=none; d=google.com; s=arc-20160816; b=T4sTGr9SCB3zIFdejlmglJrr00sQSmyuC5N/bfhwZFLD27Xh8knssIYZuQ+ExSHwgz gHlt1cnP3Iy22DbxbO8k/0B9C+9PwYtaOTVgk7YOONeDCiq4uLiyr6QTUAtXzmBufPm6 p48v1RHc+yQ5LeOFLRcG5R469YGlGDzW5ie6Ybog60q6XOjJVvFY/B8HlJHZKObiiYgM ZtHR2zMUhJIEbTjAsBCAah8EEltc2SIIl7VPzbJU8KpXZ+w+3KpedGCsM13kpZ7W5Mqy 2vETxyiER4SsMRz8CKJg8G0K4nVxmoRKIdtu+56HojF3NTaFiSkCv1MjSVfAa5N9ryq6 O5Mg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:content-language :mime-version:accept-language:in-reply-to:references:message-id:date :thread-index:thread-topic:subject:cc:to:from; bh=UM5eJp6aoaGNzD3MyIoVDKXB6eAskYrc2e7ibyIWzO4=; b=wZsRnOhZZRTv+JphTt2Tqpdhh0qvTBkcKFUQfmrGohew+9h8VVvJc85BH8pLYpf9Hl bNEPLZYksrAQGG/9JHK0UNozFqp+VyTJaZBhqoc2KjGRxxtImbcZhqYIXtjFRxnxLWUR p0vKcsHARfdqNsVQjcrxv+K3/8mk5Vhx0ZiD3Q8+4Xoz9z0Vh2slqhpJk/Ad82h7fX5J 3ZrH9HGTDH0FXOuzV/7Yay7D+badQ63/qM08VXuUPQe6VJe4vk3xQji98VlHoIiMzY8e KcBfJjEGCxiXJHQerRhFZNEXdhMbI4xJDQ+elKEGSqAoELjNqTsDfb/yOw7jwYao2GRX rTsQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=aculab.com Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id i8-20020a1709026ac800b00183d1436ef0si16106007plt.33.2022.11.09.01.14.23; Wed, 09 Nov 2022 01:14:34 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=aculab.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230229AbiKIJEn (ORCPT + 93 others); Wed, 9 Nov 2022 04:04:43 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41986 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230212AbiKIJEm (ORCPT ); Wed, 9 Nov 2022 04:04:42 -0500 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 C3DC51A20D for ; Wed, 9 Nov 2022 01:04:40 -0800 (PST) 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-56-F6hqTQPdMNuxkLz7d09ESQ-1; Wed, 09 Nov 2022 09:04:37 +0000 X-MC-Unique: F6hqTQPdMNuxkLz7d09ESQ-1 Received: from AcuMS.Aculab.com (10.202.163.6) by AcuMS.aculab.com (10.202.163.6) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Wed, 9 Nov 2022 09:04:36 +0000 Received: from AcuMS.Aculab.com ([::1]) by AcuMS.aculab.com ([::1]) with mapi id 15.00.1497.042; Wed, 9 Nov 2022 09:04:36 +0000 From: David Laight To: 'Jann Horn' CC: Kees Cook , "linux-hardening@vger.kernel.org" , "kernel-hardening@lists.openwall.com" , Greg KH , Linus Torvalds , Seth Jenkins , "Eric W . Biederman" , "Andy Lutomirski" , "linux-kernel@vger.kernel.org" Subject: RE: [PATCH] exit: Put an upper limit on how often we can oops Thread-Topic: [PATCH] exit: Put an upper limit on how often we can oops Thread-Index: AQHY8uVtJeqm4QnZJEegjt8nfpQUG640wW1QgABcZ4CAAS8xAA== Date: Wed, 9 Nov 2022 09:04:36 +0000 Message-ID: References: <20221107201317.324457-1-jannh@google.com> <3e2f7e2cb4f6451a9ef5d0fb9e1f6080@AcuMS.aculab.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 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 X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org RnJvbTogSmFubiBIb3JuDQo+IFNlbnQ6IDA4IE5vdmVtYmVyIDIwMjIgMTQ6NTMNCj4gDQo+IE9u IFR1ZSwgTm92IDgsIDIwMjIgYXQgMTA6MjYgQU0gRGF2aWQgTGFpZ2h0IDxEYXZpZC5MYWlnaHRA YWN1bGFiLmNvbT4gd3JvdGU6DQo+ID4gPiBNYW55IExpbnV4IHN5c3RlbXMgYXJlIGNvbmZpZ3Vy ZWQgdG8gbm90IHBhbmljIG9uIG9vcHM7IGJ1dCBhbGxvd2luZyBhbg0KPiA+ID4gYXR0YWNrZXIg dG8gb29wcyB0aGUgc3lzdGVtICoqcmVhbGx5Kiogb2Z0ZW4gY2FuIG1ha2UgZXZlbiBidWdzIHRo YXQgbG9vaw0KPiA+ID4gY29tcGxldGVseSB1bmV4cGxvaXRhYmxlIGV4cGxvaXRhYmxlIChsaWtl IE5VTEwgZGVyZWZlcmVuY2VzIGFuZCBzdWNoKSBpZg0KPiA+ID4gZWFjaCBjcmFzaCBlbGV2YXRl cyBhIHJlZmNvdW50IGJ5IG9uZSBvciBhIGxvY2sgaXMgdGFrZW4gaW4gcmVhZCBtb2RlLCBhbmQN Cj4gPiA+IHRoaXMgY2F1c2VzIGEgY291bnRlciB0byBldmVudHVhbGx5IG92ZXJmbG93Lg0KPiA+ ID4NCj4gPiA+IFRoZSBtb3N0IGludGVyZXN0aW5nIGNvdW50ZXJzIGZvciB0aGlzIGFyZSAzMiBi aXRzIHdpZGUgKGxpa2Ugb3Blbi1jb2RlZA0KPiA+ID4gcmVmY291bnRzIHRoYXQgZG9uJ3QgdXNl IHJlZmNvdW50X3QpLiAoVGhlIGxkc2VtIHJlYWRlciBjb3VudCBvbiAzMi1iaXQNCj4gPiA+IHBs YXRmb3JtcyBpcyBqdXN0IDE2IGJpdHMsIGJ1dCBwcm9iYWJseSBub2JvZHkgY2FyZXMgYWJvdXQg MzItYml0IHBsYXRmb3Jtcw0KPiA+ID4gdGhhdCBtdWNoIG5vd2FkYXlzLikNCj4gPiA+DQo+ID4g PiBTbyBsZXQncyBwYW5pYyB0aGUgc3lzdGVtIGlmIHRoZSBrZXJuZWwgaXMgY29uc3RhbnRseSBv b3BzaW5nLg0KPiA+DQo+ID4gSSB0aGluayB5b3UgYXJlIHByZXR0eSBtdWNoIGd1YXJhbnRlZWQg dG8gcnVuIG91dCBvZiBtZW1vcnkNCj4gPiAob3IgYXQgbGVhc3QgS1ZBKSBiZWZvcmUgYW55IDMy Yml0IGNvdW50ZXIgd3JhcHMuDQo+IA0KPiBOb3QgaWYgeW91IHJlcGVhdGVkbHkgdGFrZSBhIHJl ZmVyZW5jZSBhbmQgdGhlbiBvb3BzIHdpdGhvdXQgZHJvcHBpbmcNCj4gdGhlIHJlZmVyZW5jZSwg YW5kIHRoZSBvb3BzIHBhdGggY2xlYW5zIHVwIGFsbCB0aGUgcmVzb3VyY2VzIHRoYXQgd2VyZQ0K PiBhbGxvY2F0ZWQgZm9yIHRoZSBjcmFzaGluZyB0YXNrcy4gSW4gdGhhdCBjYXNlLCBlYWNoIG9v cHMgaW5jcmVtZW50cw0KPiB0aGUgcmVmZXJlbmNlIGNvdW50IGJ5IDEgd2l0aG91dCBjYXVzaW5n IG1lbW9yeSBhbGxvY2F0aW9uLg0KDQpJJ2QgaGF2ZSB0aG91Z2h0IHRoYXQgdGhlIGtlcm5lbCBz dGFjayBhbmQgcHJvY2VzcyBhcmVhcyBjb3VsZG4ndA0KYmUgZnJlZWQgYmVjYXVzZSB0aGV5IG1p Z2h0IGNvbnRhaW4gJ2xpdmUgZGF0YScuDQpUaGVyZSBpcyBhbHNvIHRoZSBtdWNoIHNtYWxsZXIg cGlkX3Qgc3RydWN0dXJlLg0KDQpPZiBjb3Vyc2UgSSBtaWdodCBiZSB3cm9uZy4uLg0KQnV0IEkn bSBzdXJlIC9wcm9jL3BpZC9zdGFjayBpcyB2YWxpZCBmb3IgYW4gb29wc2VkIHByb2Nlc3MuDQoN CglEYXZpZA0KDQotDQpSZWdpc3RlcmVkIEFkZHJlc3MgTGFrZXNpZGUsIEJyYW1sZXkgUm9hZCwg TW91bnQgRmFybSwgTWlsdG9uIEtleW5lcywgTUsxIDFQVCwgVUsNClJlZ2lzdHJhdGlvbiBObzog MTM5NzM4NiAoV2FsZXMpDQo=