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 66087C25B4E for ; Tue, 24 Jan 2023 18:55:00 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id E1EA96B0071; Tue, 24 Jan 2023 13:54:59 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id DA7A46B0072; Tue, 24 Jan 2023 13:54:59 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id C20D36B0073; Tue, 24 Jan 2023 13:54:59 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id AF3926B0071 for ; Tue, 24 Jan 2023 13:54:59 -0500 (EST) Received: from smtpin24.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay09.hostedemail.com (Postfix) with ESMTP id 887D380C81 for ; Tue, 24 Jan 2023 18:54:59 +0000 (UTC) X-FDA: 80390594718.24.D886A13 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by imf24.hostedemail.com (Postfix) with ESMTP id C6F44180008 for ; Tue, 24 Jan 2023 18:54:57 +0000 (UTC) Authentication-Results: imf24.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=gmPyaiPn; spf=pass (imf24.hostedemail.com: domain of ebiggers@kernel.org designates 145.40.68.75 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=1674586497; a=rsa-sha256; cv=none; b=0rVMISHJ2dvD3MDzQgXnQQr36mYnTc2aS2JADsgDahkqmIFu+xTXbCpVF1ZTWiEppu+NFq EBPmv7H/7bqAnV5QL99dnO9iWGdzlp1hkCf5ZwObUesrbwPjgO6Z2eF7ZLp159/K/9pC3m 3M6BKi0pReinsE1UxmnX+Jf7zVGeCOA= ARC-Authentication-Results: i=1; imf24.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=gmPyaiPn; spf=pass (imf24.hostedemail.com: domain of ebiggers@kernel.org designates 145.40.68.75 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=1674586497; 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=GS3tJAOW2p690w/lXKS5wIkZfj1/Anmtrbk9hi00lI8=; b=LWoFpq8anjuWUYfuY5UawcwBJu0GY8IX+QFeB1keQubWmQEXGvv6bYN5kZXXWfxt+/oTGA gwogFmiNPgasCEzIevVgVBa50ZoGxa4IQ+Q0EADGXmXAlW1hEQpU35dnPJtQeRZUDwZp9g 4CY6SEtG0qBqbowPoa0DYShfiLobCng= 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 64AB5B81614; Tue, 24 Jan 2023 18:54:56 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B5028C433D2; Tue, 24 Jan 2023 18:54:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1674586495; bh=MEzZz9+HOHVNR7Bkq5XrQ/SBBmaakkmss3qzTf2TNZw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=gmPyaiPnt/H87eU/VBtDq/6qVd1mbRv3pxiHPKmahI3Cqnnb5pLlUG/WC7MrJ+Ff2 CiyHASE5tK56vbjHJgjK5V8Y2dkHuNfAg0ga8XpaFUzQf9YlqDshIkPE0Km9oHDFzd nTVERbE6q7QBWozxyhpTOvLxfNYZACWzR9CDa8kPXpCQdfOMobZICOGUsUHCN85abf qekPI3dQGHmC+07SfCoqjg3whkMzh9BRQqfLvQSx1n/mopAiRardm7QNgfAy365usi d4BdCubH60QwPs2yPUBf7Xbia2zgnU1P9FU6PEBH3fhgSWpyAaKcyrDznhIwNKV3Y/ 8aRzs9234ATYA== Date: Tue, 24 Jan 2023 10:54:44 -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: <202301191627.FC1E24ED5@keescook> X-Rspam-User: X-Rspamd-Queue-Id: C6F44180008 X-Rspamd-Server: rspam01 X-Stat-Signature: n11jne5535ch6jzaywpd6ady3h87gh1j X-HE-Tag: 1674586497-73677 X-HE-Meta: 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 hK7KBBqV gJ8P+an2PW+wqKJVLqTOcCTVxQAWsTQP4UGUVbCBYvJlisMwftMxloVG7YO/FO6WSqbs8Q5ohflcm7d+t9oDBGLPaQhBhyhFY0YoGgqFiUn/xNCV5w44W7tBnQynm6qTorlFhsgjgz+/Qoj0vE7P5zf7zxL3sIAc/tXqhEB0FGBcoWXSnAasEsBrlPLKPpSCUjPBVo6i/PYYEMks8xUOKRyliUKa+Nv2Vw/KQ4QWvZmK/LtCBeA53I/9RzddJAxCo2sxCjCyDnYgCxmnsHrvsUQ0KHt7nNRlSkjpdoyPS2pmthaLijICJFt7VkyGvemGb7jYrNz2hYufnpLPr8rYE/L+lOMviydgfBswemgn1SDmdSrP2sO2F6hnHJxUOPM60R+UHkE9/lahSTOra+RKYOoJ2Pe83Zy7CGdq/vKkxcVxpUR4WFVYA7ugq5V8xtq/hhOFDbZJAUzN+HdA6ow+Eg6/XDQ== 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 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 - Eric