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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8DEEBC25B4E for ; Tue, 24 Jan 2023 19:38:12 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 01F306B0071; Tue, 24 Jan 2023 14:38:12 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id EEAAA6B0072; Tue, 24 Jan 2023 14:38:11 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id D8BFC6B0073; Tue, 24 Jan 2023 14:38:11 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id C03D36B0071 for ; Tue, 24 Jan 2023 14:38:11 -0500 (EST) Received: from smtpin14.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay01.hostedemail.com (Postfix) with ESMTP id 97C511C64B2 for ; Tue, 24 Jan 2023 19:38:11 +0000 (UTC) X-FDA: 80390703582.14.9E2D173 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by imf18.hostedemail.com (Postfix) with ESMTP id BEE441C0023 for ; Tue, 24 Jan 2023 19:38:09 +0000 (UTC) Authentication-Results: imf18.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=mGX2BR1N; spf=pass (imf18.hostedemail.com: domain of ebiggers@kernel.org designates 139.178.84.217 as permitted sender) smtp.mailfrom=ebiggers@kernel.org; dmarc=pass (policy=none) header.from=kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1674589089; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=HBXM1E6oDfju2EWBGoS3zfXb4H4GcGq2UjIVuFOpppQ=; b=6zfvSR2aLFoCsO57ALRVApvxTMHUKvWskeQkqIDl5a5NYqe9ta+snCM7RTmYkH75MWdDc8 ApRKIMhYMdtquDuklc4WEQ+HE+YrEX63j8QvAdmri6RIed2WW9N/2aSDfcZjxXxJA6kEc3 iHTa4PhfxVhmAygVaCSSwM25P3NMKOM= ARC-Authentication-Results: i=1; imf18.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=mGX2BR1N; spf=pass (imf18.hostedemail.com: domain of ebiggers@kernel.org designates 139.178.84.217 as permitted sender) smtp.mailfrom=ebiggers@kernel.org; dmarc=pass (policy=none) header.from=kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1674589089; a=rsa-sha256; cv=none; b=jZDCgg0RoOPOGeQ9HMvPWiAS6CiAcj5BPtxh/Q1vByeVG5Xwi98Fjbj7mMtvJIG6v7sXJB VfWP37vXPOcrjz30ZCYZlvzDWZSli6NHjuQFb7wHZoTpRyVR7MfeKUFpGeRjgD7OtOyS7B qA3qlR8Dzo+W0DJipAJxlK1LrIWeD5k= Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id E05D261323; Tue, 24 Jan 2023 19:38:08 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 076E3C433EF; Tue, 24 Jan 2023 19:38:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1674589088; bh=xskT3KnwkyFLprec2IlaRirgxO1LovXoHkpjNb/gJ1Y=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=mGX2BR1NivoX64yXLnw2GadSQj6oZ6MwDKQwi+whK2XwKu78q1Z84/Q0KH3l1ndiu WRCLU4yC5YkBglzZ3/XdB7pPzqwmSDz8F8REbFFMNCUcknKIQ+q0ZO582QMFJnMVm+ 328BmjttvgFGtxPDt3bB1+WD+JBtu4xTIt5P1ZzQAJCFvI1tsjCmP8DSrp9c3EW9hW OvCIMCkMkH91ZyZGL4sj/irS0GnbFfmjUDpAnMM8nRmJI073Ie9H2ER3cqWhjHI/hc 8J5xZW2Quh7v4+zXbLYfEzD6UQxWyEhYbQrm4IaqHq+E1dBZgzuqXY/a7DonF21GA2 wVQvXA6Culsaw== Date: Tue, 24 Jan 2023 11:38:05 -0800 From: Eric Biggers To: Kees Cook Cc: Seth Jenkins , SeongJae Park , Jann Horn , Luis Chamberlain , Greg KH , Linus Torvalds , Andy Lutomirski , Andrew Morton , tangmeng , "Guilherme G. Piccoli" , Tiezhu Yang , Sebastian Andrzej Siewior , "Eric W. Biederman" , Arnd Bergmann , Dmitry Vyukov , Peter Zijlstra , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Ben Segall , Daniel Bristot de Oliveira , Valentin Schneider , Andrey Ryabinin , Alexander Potapenko , Andrey Konovalov , Vincenzo Frascino , David Gow , "Paul E. McKenney" , Jonathan Corbet , Baolin Wang , "Jason A. Donenfeld" , Huang Ying , Anton Vorontsov , Mauro Carvalho Chehab , Laurent Dufour , Rob Herring , linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, linux-mm@kvack.org, linux-doc@vger.kernel.org, linux-hardening@vger.kernel.org Subject: Re: [PATCH v3 2/6] exit: Put an upper limit on how often we can oops Message-ID: References: <20221117234328.594699-2-keescook@chromium.org> <20230119201023.4003-1-sj@kernel.org> <202301191627.FC1E24ED5@keescook> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Stat-Signature: k141qo3kqneqnw6dz5d7fkkjzr1ezbm6 X-Rspam-User: X-Rspamd-Queue-Id: BEE441C0023 X-Rspamd-Server: rspam06 X-HE-Tag: 1674589089-52083 X-HE-Meta: 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 Od9Njn1v dJWenOWmJKr/MqxxsDIcaXyDqOFcUrX/U1wk5dx4pnuBOzhbFZCSgwEr5MQvnndCeyYDDi0/L91anf1AjXGTzF9mVhJWIRkcxNsbSC2RUOEC73zz9dLksa94e+fXddbr6g4ElJpnEghKSYx6bKSEcTV24mZ7A8Q4TkpV8UfNPY6u2rqa6/u95n9n9sF23aeyQyiNP2E9TxX6tBiA2/uHe8w6wzVMFkJlyL//VKnnJn+jZJb0foXaf8SfGw5bhNZ1lK4OUEZkS84Dg1reSK0ZZoZj8IBnS5HQ476kkci9d6KCyWFXRpOCgiBt2JItnAVV66egcG3SJayK1PPQMxGaHC+qBv77r73OPvNf0aD9OVb9mvCDEn6TFUwSrJzvHDMCBd0SLkAzgum75QlecxVGbQs3fJdaZ1ZZR8BQVaQ8iIQZa7U+XtHuGT2tL0yCnAT36sbYqA1dlTRBZTyWmRyXF1pvvnQ== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Tue, Jan 24, 2023 at 10:54:57AM -0800, Eric Biggers wrote: > On Thu, Jan 19, 2023 at 04:28:42PM -0800, Kees Cook wrote: > > On Thu, Jan 19, 2023 at 03:19:21PM -0500, Seth Jenkins wrote: > > > > Do you have a plan to backport this into upstream LTS kernels? > > > > > > As I understand, the answer is "hopefully yes" with the big > > > presumption that all stakeholders are on board for the change. There > > > is *definitely* a plan to *submit* backports to the stable trees, but > > > ofc it will require some approvals. > > > > I've asked for at least v6.1.x (it's a clean cherry-pick). Earlier > > kernels will need some non-trivial backporting. Is there anyone that > > would be interested in stepping up to do that? > > > > https://lore.kernel.org/lkml/202301191532.AEEC765@keescook > > > > I've sent out a backport to 5.15: > https://lore.kernel.org/stable/20230124185110.143857-1-ebiggers@kernel.org/T/#t Also 5.10, which wasn't too hard after doing 5.15: https://lore.kernel.org/stable/20230124193004.206841-1-ebiggers@kernel.org/T/#t - Eric