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 6149CC61D97 for ; Tue, 24 Jan 2023 23:10:03 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id BF6CD6B0074; Tue, 24 Jan 2023 18:10:02 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id BA6AB6B0075; Tue, 24 Jan 2023 18:10:02 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id A6EE16B0078; Tue, 24 Jan 2023 18:10:02 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0013.hostedemail.com [216.40.44.13]) by kanga.kvack.org (Postfix) with ESMTP id 983E06B0074 for ; Tue, 24 Jan 2023 18:10:02 -0500 (EST) Received: from smtpin20.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay10.hostedemail.com (Postfix) with ESMTP id 71C27C0B0D for ; Tue, 24 Jan 2023 23:10:02 +0000 (UTC) X-FDA: 80391237444.20.2F2DD9B Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by imf08.hostedemail.com (Postfix) with ESMTP id 909B416000A for ; Tue, 24 Jan 2023 23:10:00 +0000 (UTC) Authentication-Results: imf08.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=pcdTUIPN; spf=pass (imf08.hostedemail.com: domain of kees@kernel.org designates 145.40.68.75 as permitted sender) smtp.mailfrom=kees@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=1674601800; 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:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=wGkrTvwbUrvsMXFde+BwpUrtWLtdKcEhQ4ZYux9Jo2Y=; b=PyvdweIwf8su0w+c7TQTmlxnTaOVA4wfq1Cr3c55S2md+MhBNCZ55R9s/PahqbRNNTQrUO MbZUvWcqEVg4IJmEXat/yheKRsQ4lDUjYahHXMgrjF7gm6zzl8J6LLeth9KVHqchtDrJ1O IRwzgMITgwoaTGusyEavH2WyZpVeNKQ= ARC-Authentication-Results: i=1; imf08.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=pcdTUIPN; spf=pass (imf08.hostedemail.com: domain of kees@kernel.org designates 145.40.68.75 as permitted sender) smtp.mailfrom=kees@kernel.org; dmarc=pass (policy=none) header.from=kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1674601800; a=rsa-sha256; cv=none; b=1I6saIjaTUUOEwHPHejEzPmhJiVljmxPZAGHyc2ZfVx6w4H9j5COvsLpPAazmR+kxRlwQc +uhtiy86EfF3I3YQ1xPmrzE60bPuPSgV/YsnIaXZ4Jy1mqo11vLl/2vrdhu6qfosdJXqp0 IdaBpHCH+9OUT95UwXZV01AET8lQdAc= 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 ams.source.kernel.org (Postfix) with ESMTPS id 13912B81683; Tue, 24 Jan 2023 23:09:59 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9BC5FC433D2; Tue, 24 Jan 2023 23:09:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1674601797; bh=wGkrTvwbUrvsMXFde+BwpUrtWLtdKcEhQ4ZYux9Jo2Y=; h=Date:From:To:CC:Subject:In-Reply-To:References:From; b=pcdTUIPNx9Zu3k5T2uBy9ivkf/HvJ+OXoumhCiDjxtptmUFkCNHKn1X6bX3cPeDR5 4+5zqBl2Z25nNzxSXZ3AWBQ/ApnSOT3W4OOppBX+CVlIaETHASWqyuEUgFWADAfSo4 jbpVzVejtO92IaMfszWqPu65zpGEhfXZ0efNQNuDqC4Tz+lGUPUbYVfgihnP98sMrT GmptyJ/kOLHqRp+NANz+76X8pPYBUV/T34zp+S848L74Feg4ONFcu00DXh9ED9t+m8 KsxJ26FUqSY/e5ZxgHvNXWwieONWLcV8ZevkV7Q+dRp7fXCZmvPAttHGB9aUJEgUJ1 JISFOnWySeBzw== Date: Tue, 24 Jan 2023 15:09:51 -0800 From: Kees Cook To: Eric Biggers , 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 User-Agent: K-9 Mail for Android In-Reply-To: References: <20221117234328.594699-2-keescook@chromium.org> <20230119201023.4003-1-sj@kernel.org> <202301191627.FC1E24ED5@keescook> Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 909B416000A X-Rspam-User: X-Stat-Signature: 7goxpk1aqfti3k76g6p6g1rrir7s9ojq X-HE-Tag: 1674601800-388545 X-HE-Meta: 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 UZadR7eg 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 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 January 24, 2023 11:38:05 AM PST, Eric Biggers w= rote: >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? >> > >=20 >> > > As I understand, the answer is "hopefully yes" with the big >> > > presumption that all stakeholders are on board for the change=2E Th= ere >> > > is *definitely* a plan to *submit* backports to the stable trees, b= ut >> > > ofc it will require some approvals=2E >> >=20 >> > I've asked for at least v6=2E1=2Ex (it's a clean cherry-pick)=2E Earl= ier >> > kernels will need some non-trivial backporting=2E Is there anyone tha= t >> > would be interested in stepping up to do that? >> >=20 >> > https://lore=2Ekernel=2Eorg/lkml/202301191532=2EAEEC765@keescook >> >=20 >>=20 >> I've sent out a backport to 5=2E15: >> https://lore=2Ekernel=2Eorg/stable/20230124185110=2E143857-1-ebiggers@k= ernel=2Eorg/T/#t > >Also 5=2E10, which wasn't too hard after doing 5=2E15: >https://lore=2Ekernel=2Eorg/stable/20230124193004=2E206841-1-ebiggers@ker= nel=2Eorg/T/#t Oh excellent! Thank you very much! -Kees --=20 Kees Cook