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 91BCDC433FE for ; Wed, 9 Nov 2022 21:17:46 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 35E136B0073; Wed, 9 Nov 2022 16:17:46 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 30EB86B0074; Wed, 9 Nov 2022 16:17:46 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 1FE168E0002; Wed, 9 Nov 2022 16:17:46 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0014.hostedemail.com [216.40.44.14]) by kanga.kvack.org (Postfix) with ESMTP id 1233F6B0073 for ; Wed, 9 Nov 2022 16:17:46 -0500 (EST) Received: from smtpin15.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay06.hostedemail.com (Postfix) with ESMTP id DE757AB5EB for ; Wed, 9 Nov 2022 21:17:45 +0000 (UTC) X-FDA: 80115165690.15.F9E2A00 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) by imf08.hostedemail.com (Postfix) with ESMTP id B6517160006 for ; Wed, 9 Nov 2022 21:17:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Sender:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=c2Wy125HjX2W7gqEInmUWaHL+2Vak7X60gZ/uKVxsSs=; b=yTyMtQVIIuXac7UW27SjuG9FjG FaNaEfZ1TQyT856V2r9PHoNMTj1OFga3j6sCeGL5vpTaladSMUcaUqlEh7FhPpGzmcgViQIE+XamI 57plJW0OSYsmvdILQmQY1Q/fNcPb2WEGHDp6RnEVFTvXds//du5ABC2lJNjVOqyXX1A704rNcdiHM aHhVDPBY7FMDBohK5yGY1VIjFtEWemGGKAC1JVcG84zgDMzQiZempRpkBc4NYYMUhbJvIIxVGGvfi XKzZ06LfYfF7ex2aqalbXQBI14ZikP4rfNEIAEAQmmt1pv0oSTTKxu6qp2CS1l45ct8nuw+AyhJWK KjxiEKAg==; Received: from mcgrof by bombadil.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1ossRG-00HMpa-89; Wed, 09 Nov 2022 21:16:50 +0000 Date: Wed, 9 Nov 2022 13:16:50 -0800 From: Luis Chamberlain To: Kees Cook Cc: Jann Horn , Greg KH , Linus Torvalds , Seth Jenkins , Andy Lutomirski , Petr Mladek , Andrew Morton , tangmeng , "Guilherme G. Piccoli" , Tiezhu Yang , Sebastian Andrzej Siewior , "Eric W. Biederman" , Arnd Bergmann , Marco Elver , Dmitry Vyukov , Peter Zijlstra , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Ben Segall , Mel Gorman , 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" , Eric Biggers , 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 next v2 0/6] exit: Put an upper limit on how often we can oops Message-ID: References: <20221109194404.gonna.558-kees@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20221109194404.gonna.558-kees@kernel.org> ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1668028665; a=rsa-sha256; cv=none; b=iHvd8QK4DCrjJkYLaT5CPIzK/HllsOOmTmen3mX7mbe25Lg3l+6F1l6JQ86XsosOl+mXaO qISV67mQQPz6NSPei5t64KFXPkS8woaS8Fy2PleIz72b2ot5UtWlIRQh9xAO14Pzkw12De H7Tn7K98G/+d0fH/VijO4mO8WM6+LdU= ARC-Authentication-Results: i=1; imf08.hostedemail.com; dkim=pass header.d=infradead.org header.s=bombadil.20210309 header.b=yTyMtQVI; dmarc=fail reason="No valid SPF, DKIM not aligned (relaxed)" header.from=kernel.org (policy=none); spf=none (imf08.hostedemail.com: domain of mcgrof@infradead.org has no SPF policy when checking 198.137.202.133) smtp.mailfrom=mcgrof@infradead.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1668028665; h=from:from:sender: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=c2Wy125HjX2W7gqEInmUWaHL+2Vak7X60gZ/uKVxsSs=; b=O+ZQ3xqoEzxAn02HCLuqMEa6R8RZyzZb1lpRAAtROtZj6/5FbMQkf356GBNu84pUo5feu/ nc6a+FhkfxgnU/yFxqP/+ulmOfPiZcY7Ck0RYmvL3SSzHCHFZo3IchOu6UQBPN+q5y32Lk G7LfYVBStz5OUIIxX3c5SZmV4ZrqJZw= X-Rspamd-Queue-Id: B6517160006 Authentication-Results: imf08.hostedemail.com; dkim=pass header.d=infradead.org header.s=bombadil.20210309 header.b=yTyMtQVI; dmarc=fail reason="No valid SPF, DKIM not aligned (relaxed)" header.from=kernel.org (policy=none); spf=none (imf08.hostedemail.com: domain of mcgrof@infradead.org has no SPF policy when checking 198.137.202.133) smtp.mailfrom=mcgrof@infradead.org X-Rspam-User: X-Rspamd-Server: rspam01 X-Stat-Signature: med9o9iqbafkhs6ien97mwooddpgcbqf X-HE-Tag: 1668028664-464931 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 Wed, Nov 09, 2022 at 12:00:43PM -0800, Kees Cook wrote: > Hi, > > This builds on Jann's v1 patch[1]. Changes in v2: > - move sysctl into kernel/exit.c (where it belongs) > - expand Documentation slightly > > New stuff in v2: > - expose oops_count to sysfs > - consolidate panic_on_warn usage > - introduce warn_limit > - expose warn_count to sysfs > > [1] https://lore.kernel.org/lkml/20221107201317.324457-1-jannh@google.com > > Jann Horn (1): > exit: Put an upper limit on how often we can oops > > Kees Cook (5): > panic: Separate sysctl logic from CONFIG_SMP > exit: Expose "oops_count" to sysfs > panic: Consolidate open-coded panic_on_warn checks > panic: Introduce warn_limit > panic: Expose "warn_count" to sysfs For all: Reviewed-by: Luis Chamberlain Luis