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 X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A773EC43381 for ; Mon, 25 Mar 2019 17:06:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7FEC22087C for ; Mon, 25 Mar 2019 17:06:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729855AbfCYRGn (ORCPT ); Mon, 25 Mar 2019 13:06:43 -0400 Received: from mail-pg1-f169.google.com ([209.85.215.169]:41084 "EHLO mail-pg1-f169.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725788AbfCYRGm (ORCPT ); Mon, 25 Mar 2019 13:06:42 -0400 Received: by mail-pg1-f169.google.com with SMTP id f6so2751406pgs.8 for ; Mon, 25 Mar 2019 10:06:42 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:message-id:subject:from:to:date:in-reply-to :references:mime-version:content-transfer-encoding; bh=fWhNXj7mjR8mFLQV/1Glm1I/PJqTr/Gcv0wbi/sDLNM=; b=c9UA1ORguWq3mlMEZ0x4D71Zn2p+M1875ngiNHUdkmu0vVHwY/xSAlBvwAI2A9QMcg u2glEdtkWHYNyfVfCWyn3tZQMDX68Y5QKvRDqtqdgji0fTxcvFS3BXro+ufFD2irFHex M+o4YOwra/540sK5b5lUtdm/3AH34Qs3dBAo/rXv5HIuPPhmFm7hruXcNnGx6TPojEjV yFOhFshyoyOQNEONP+RnZ1K5DwLsHG1Hx59zJys2DfLFUKDzEPaSwE6jA3K+neXvVzgz 7XN/CS+o5rm7tlXCu4XtLT0Z21nHSEvl5OS7F7s6dqjZszMM5ObGwglwds1uYPycmR5b vbKg== X-Gm-Message-State: APjAAAVbpQaI7CjVj2wWX4VCSLJtjTwOrnqs5dTcZ7DeJUIYJEjyfWzi skommPGQIGRkEgef4Jkl1eTAQQ1Uoj8= X-Google-Smtp-Source: APXvYqzj0AbalQUUhtSKk1yS3Oo3kPyPa8EoNHu2oHfyaju342nH2NSIBuQzCLCKPP6ZDwtGWjmo8Q== X-Received: by 2002:a65:5b44:: with SMTP id y4mr7010965pgr.446.1553533602174; Mon, 25 Mar 2019 10:06:42 -0700 (PDT) Received: from ?IPv6:2620:15c:2cd:203:5cdc:422c:7b28:ebb5? ([2620:15c:2cd:203:5cdc:422c:7b28:ebb5]) by smtp.gmail.com with ESMTPSA id k10sm25977930pgj.11.2019.03.25.10.06.40 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Mon, 25 Mar 2019 10:06:41 -0700 (PDT) Message-ID: <1553533600.118779.12.camel@acm.org> Subject: Re: "cat /proc/lockdep" after "rmmod " when !debug_locks will crash the system From: Bart Van Assche To: shenghui , peterz@infradead.org, mingo@redhat.com, will.deacon@arm.com, linux-kernel@vger.kernel.org Date: Mon, 25 Mar 2019 10:06:40 -0700 In-Reply-To: <5c98a345.1c69fb81.21300.0be5SMTPIN_ADDED_BROKEN@mx.google.com> References: <5c98a345.1c69fb81.21300.0be5SMTPIN_ADDED_BROKEN@mx.google.com> Content-Type: text/plain; charset="UTF-7" X-Mailer: Evolution 3.26.2-1 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2019-03-25 at 17:45 +-0800, shenghui wrote: +AD4 I installed virtualbox-5.2.24 on my system (x86 32) and on bootup I got some warning: +AD4 --------------------- +AD4 1251 +AFs 42.640869+AF0 DEBUG+AF8-LOCKS+AF8-WARN+AF8-ON(+ACE-current-+AD4-hardirqs+AF8-enabled) +AD4 1252 +AFs 42.640880+AF0 WARNING: CPU: 0 PID: 841 at kernel/locking/lockdep.c:4132 check+AF8-flags.part.45+-0x9e/0x190 +AD4 ... Hi Shenghui, That warning should have been followed by a call trace. Please share that call trace. Thanks, Bart.