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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C0362C433EF for ; Wed, 10 Nov 2021 09:08:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A65E3610CF for ; Wed, 10 Nov 2021 09:08:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230338AbhKJJLm (ORCPT ); Wed, 10 Nov 2021 04:11:42 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53118 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229931AbhKJJLl (ORCPT ); Wed, 10 Nov 2021 04:11:41 -0500 Received: from mail-wm1-x32e.google.com (mail-wm1-x32e.google.com [IPv6:2a00:1450:4864:20::32e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BC571C061764 for ; Wed, 10 Nov 2021 01:08:53 -0800 (PST) Received: by mail-wm1-x32e.google.com with SMTP id b2-20020a1c8002000000b0032fb900951eso4011414wmd.4 for ; Wed, 10 Nov 2021 01:08:53 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=teTpbIWMqP19cYw1tGp6eE48hT4P1O4XsJC6/1SCuq0=; b=J1B8gY57c0HGSQTVBkK6Wzx/tQUfOa65/KSM1dz8AKNHKnU6TxbE3rw0JQ3MpW0PNa ZhFiBhiDuJROo+fwg1YojPwLAgmoMwn/5JKM/u5Gmsfx75nn3QVytYdbw9rx8sGWQzI5 45u3M3MLM6+GGsiOymi13U2U5D7kOZVR253Xp0M0hn77LxNaCM+T/Qq7nC8MVvBwrwhh sYvPAx53VBKeJ3bcWQxdRfUhhkujxGQLoYk7NgdSM5A+I6/0xsGI5mHIWNV9KmOqwjDf JcSuQG8qSVKVBzBkLi0mx0zmV1RTKDvh7Ne3wZKqp6Pr6WfisdCOTtlg42lBOh7IIAW9 jgfA== 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:references :mime-version:content-disposition:in-reply-to:user-agent; bh=teTpbIWMqP19cYw1tGp6eE48hT4P1O4XsJC6/1SCuq0=; b=g9RyhwPRzcMlUUYdkLw3yh4+ZqNJEsJB8O3yjJzolcvQ+/kDQ1RBx3/GaK+xsOlVYa efwqOtR9RbDgOxc6V0K+hvGVHR9/0gkYgKu23iGIsJzeGC4SCbMWh1gpyZijjYlPcuoY zOG1O9VIQHoIP04oLOUxgDQvVlBtVfiTwqJWoPz66Fq+owO9YMKTtKgqfIHxnnE2lYYg hwnVE0+zBNdr2uI8avZN24rVh3dhdFfJ3L0Rzb34ydzHHPJO3vsYl1GiXM3l2rotjF9t V1NZmpzD09iZsl/v1Eh349o29Af9YybxMoFSbzljcCQm7xfTgsPCFPcq9MNF3WFT6wnE Ctnw== X-Gm-Message-State: AOAM531wSI0h+odjt5phjwq0YeUh5Z2YXh7CFPdPNiugUDXAI9AErOGa tKzd/P8iCbky3IfQX9XI+G00YCM90v6oNA== X-Google-Smtp-Source: ABdhPJyMi57au9h9/Aqfcx+Azuam1ghDXSU0NgI1nzqrK8fT3t+0fOnhaTCeKd+cjqC8JDoz9UEblw== X-Received: by 2002:a7b:c155:: with SMTP id z21mr14390600wmi.107.1636535332123; Wed, 10 Nov 2021 01:08:52 -0800 (PST) Received: from elver.google.com ([2a00:79e0:15:13:5b79:8e57:35c2:52]) by smtp.gmail.com with ESMTPSA id x21sm4942772wmc.14.2021.11.10.01.08.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 10 Nov 2021 01:08:51 -0800 (PST) Date: Wed, 10 Nov 2021 10:08:45 +0100 From: Marco Elver To: Russell King - ARM Linux admin Cc: Mark Rutland , Dmitry Vyukov , syzbot , Arnd Bergmann , Linux ARM , Alexandre Chartre , LKML , Masami Hiramatsu , Peter Zijlstra , syzkaller-bugs , Thomas Gleixner Subject: Re: [syzbot] upstream boot error: WARNING in __context_tracking_enter Message-ID: References: <0000000000004f14c105bde08f75@google.com> <20210319101043.GU1463@shell.armlinux.org.uk> <20210322172241.GB80352@C02TD0UTHF1T.local> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/2.0.5 (2021-01-21) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Apr 13, 2021 at 07:14AM +0200, Dmitry Vyukov wrote: [...] > Hi Russell, > > Does Mark's comment make sense to you? > lockdep_assert_preemption_disabled() also checks "&& > this_cpu_read(hardirqs_enabled)", so is it that we also need hardirq's > disabled around user_enter/exit? > This issue currently prevents ARM boot on syzbot. We've disabled lockdep on syzbot's arm32 instance now as that instance had been dead since March: https://github.com/google/syzkaller/commit/be386ae8800e02b4a9a3239c9565e9d40e253c84 It's running again. There may be an influx of new bugs. Thanks, -- Marco