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 DC79BC4332F for ; Thu, 3 Nov 2022 12:54:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230471AbiKCMyL (ORCPT ); Thu, 3 Nov 2022 08:54:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38810 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229539AbiKCMyJ (ORCPT ); Thu, 3 Nov 2022 08:54:09 -0400 Received: from wp530.webpack.hosteurope.de (wp530.webpack.hosteurope.de [80.237.130.52]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2D55C21AC for ; Thu, 3 Nov 2022 05:54:08 -0700 (PDT) Received: from [2a02:8108:963f:de38:eca4:7d19:f9a2:22c5]; authenticated by wp530.webpack.hosteurope.de running ExIM with esmtpsa (TLS1.3:ECDHE_RSA_AES_128_GCM_SHA256:128) id 1oqZjR-0007WA-Ov; Thu, 03 Nov 2022 13:54:06 +0100 Message-ID: <2c6b195b-287c-c5de-8e22-72aed337af39@leemhuis.info> Date: Thu, 3 Nov 2022 13:54:04 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.4.0 Subject: Re: [REGRESSION 6.0.x / 6.1.x] NULL dereferencing at tracing #forregzbot Content-Language: en-US, de-DE Cc: linux-kernel@vger.kernel.org References: <87h6zklb6n.wl-tiwai@suse.de> To: regressions@lists.linux.dev From: Thorsten Leemhuis In-Reply-To: <87h6zklb6n.wl-tiwai@suse.de> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-bounce-key: webpack.hosteurope.de;regressions@leemhuis.info;1667480048;cde84bfd; X-HE-SMSGID: 1oqZjR-0007WA-Ov Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org [Note: this mail is primarily send for documentation purposes and/or for regzbot, my Linux kernel regression tracking bot. That's why I removed most or all folks from the list of recipients, but left any that looked like a mailing lists. These mails usually contain '#forregzbot' in the subject, to make them easy to spot and filter out.] On 31.10.22 08:11, Takashi Iwai wrote: > > we've got a bug report indicating the NULL dereference at the recent > tracing changes, showing at the start of KDE. The details including > the dmesg are found at: > https://bugzilla.opensuse.org/show_bug.cgi?id=1204705 > > It was reported at first for 6.0.3, and confirmed that the problem > persists with 6.1-rc, too. > > The culprit seems to be the commit > f3ddb74ad0790030c9592229fb14d8c451f4e9a8 > tracing: Wake up ring buffer waiters on closing of the file > and reverting it seems fixing the problem. > > Could you take a look? Just adding this to the tracking: #regzbot introduced f3ddb74ad07 ^ https://bugzilla.opensuse.org/show_bug.cgi?id=1204705 #regzbot title NULL dereferencing at tracing #regzbot ignore-activity #regzbot monitor: https://lore.kernel.org/all/20221101191009.1e7378c8@rorschach.local.home/ Ciao, Thorsten