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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 426CDC43334 for ; Mon, 13 Jun 2022 23:42:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233046AbiFMXmQ (ORCPT ); Mon, 13 Jun 2022 19:42:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43552 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236267AbiFMXmJ (ORCPT ); Mon, 13 Jun 2022 19:42:09 -0400 Received: from mail-pj1-x102e.google.com (mail-pj1-x102e.google.com [IPv6:2607:f8b0:4864:20::102e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1A7EF31DF5 for ; Mon, 13 Jun 2022 16:42:09 -0700 (PDT) Received: by mail-pj1-x102e.google.com with SMTP id k12-20020a17090a404c00b001eaabc1fe5dso4392580pjg.1 for ; Mon, 13 Jun 2022 16:42:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=date:from:to:cc:subject:message-id:mime-version:content-disposition :in-reply-to; bh=bmrcJZovwOahuZ1zD4ESe7f2j1QrpBL8ylumdbuHvxM=; b=JpnraQXZnpUfWzMpojVP52aPPWRi1HOd/1ci9yX3oG34IdnyRRtTH7R4p0qPi/umoK c2++crrRW/6CTVRFlcca0rJ2mpjmDSkzpqlkaqvCy0ijyX4xrhjcYn0uDteDgQhczafU Z7QswHZXgnS+JX5EIrmk7HPkPMOq3+md/E5D8= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:mime-version :content-disposition:in-reply-to; bh=bmrcJZovwOahuZ1zD4ESe7f2j1QrpBL8ylumdbuHvxM=; b=NfVz9dOCBbCX6hedlEeBJA5WXaefUASGqluvpe4cEIyDPYuuYmUN/SBuL/D1FXt9F1 Xchsm1ZlYJWLoJRa1NbcLj3m1JHlJOHURPPz7ronrDL7jZE3SD+6Ifk5HFZsDzrH9WDe 3ACW0bhWhDrki1zs9N7lGo/hX8Zp3noHyDpNaJkaHV+Ff1lXOA2NXWrc9HKVN4f4ex9Y 33wSSSvXC0Yt1YHWio/0EAHdb6Gz7j0x6JyfKFiSHr6+G3krUP37B4bWvGnQci6o5VDI yqQFPfXsf1V1WdQeQCiMSyLskhs8HjGhdJSyOfpLblAEtLK4A7xkWFu/IfCSdpCaSEVm DNNA== X-Gm-Message-State: AJIora9ldOkvNBZbUzQg9t6K0qpoB11qfsk/pcXsH1bDyVHSP9tWZHoH sum0V9dBihCUiYp9UCUTDcoTeQ== X-Google-Smtp-Source: AGRyM1vNtmO+ZaBmD09AkfcwSGSZqhC7FRvmhR4OAGa46dyO/rvDxYq3/5shTCS837L83KdspeVQaw== X-Received: by 2002:a17:903:120b:b0:168:98a9:221f with SMTP id l11-20020a170903120b00b0016898a9221fmr1445911plh.48.1655163728548; Mon, 13 Jun 2022 16:42:08 -0700 (PDT) Received: from www.outflux.net (smtp.outflux.net. [198.145.64.163]) by smtp.gmail.com with ESMTPSA id b13-20020a6541cd000000b003c25dfd7372sm6225255pgq.26.2022.06.13.16.42.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 13 Jun 2022 16:42:08 -0700 (PDT) Date: Mon, 13 Jun 2022 16:42:07 -0700 From: Kees Cook To: "Paul E. McKenney" Cc: "Zhang, Qiang1" , "Eric W. Biederman" , syzbot , "brauner@kernel.org" , "keescook@chromium.org" , "linux-kernel@vger.kernel.org" , "syzkaller-bugs@googlegroups.com" Subject: Re: [syzbot] WARNING in exit_tasks_rcu_finish Message-ID: <202206131639.DBA0A8D@keescook> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220613233753.GK1790663@paulmck-ThinkPad-P17-Gen-1> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jun 13, 2022 at 10:36:07AM -0700, syzbot wrote: > Hello, > > syzbot has tested the proposed patch and the reproducer did not trigger any issue: > > Reported-and-tested-by: syzbot+9bb26e7c5e8e4fa7e641@syzkaller.appspotmail.com Looks like the patch solved the reproducer. :) > Tested on: > > commit: 6d0c8068 Add linux-next specific files for 20220610 > git tree: git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git next-20220610 > console output: https://syzkaller.appspot.com/x/log.txt?x=12d068eff00000 > kernel config: https://syzkaller.appspot.com/x/.config?x=a30d6e3e814e5931 > dashboard link: https://syzkaller.appspot.com/bug?extid=9bb26e7c5e8e4fa7e641 > compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 > patch: https://syzkaller.appspot.com/x/patch.diff?x=147f47c8080000 > > Note: testing is done by a robot and is best-effort only. You can see the dashboard link above for testing details... -- Kees Cook