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 3A378C001B2 for ; Thu, 22 Dec 2022 12:31:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235347AbiLVMbS (ORCPT ); Thu, 22 Dec 2022 07:31:18 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54412 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230301AbiLVMbP (ORCPT ); Thu, 22 Dec 2022 07:31:15 -0500 Received: from wp530.webpack.hosteurope.de (wp530.webpack.hosteurope.de [80.237.130.52]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AA093A47A for ; Thu, 22 Dec 2022 04:31:13 -0800 (PST) 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 1p8KjA-0002nv-4B; Thu, 22 Dec 2022 13:31:12 +0100 Message-ID: <28c5c38b-de13-b2b5-0ffa-8a08d96391df@leemhuis.info> Date: Thu, 22 Dec 2022 13:31:11 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.5.1 Subject: Re: [6.2][regression] looks like commit aab9cf7b6954136f4339136a1a7fc0602a2c4d8b leads to use-after-free and random computer hangs Content-Language: en-US, de-DE To: Mikhail Gavrilov , =?UTF-8?Q?Christian_K=c3=b6nig?= , amd-gfx list , =?UTF-8?Q?Christian_K=c3=b6nig?= , Linux List Kernel Mailing , dri-devel , luben.tuikov@amd.com, "regressions@lists.linux.dev" References: From: Thorsten Leemhuis In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-bounce-key: webpack.hosteurope.de;regressions@leemhuis.info;1671712273;4f67854b; X-HE-SMSGID: 1p8KjA-0002nv-4B Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, this is your Linux kernel regression tracker. On 18.12.22 14:28, Mikhail Gavrilov wrote: > > The kernel 6.2 preparation cycle has begun. > And after the kernel was updated on my Fedora Rawhide I started > receiving use-after-free errors with complete computer hangs. > At least a good reproducer of this behaviour is launch of the game > "Marvel's Avengers". > > The backtrace of the issue looks like: > [...] Thx for your report. I'm not one of the developers for this area of the kernel, but to my untrained eyes it looks like this patch might fix your problem: https://lore.kernel.org/all/20221219104718.21677-1-christian.koenig@amd.com/ Anyway, to be sure the issue doesn't fall through the cracks unnoticed, I'm adding it to regzbot, my Linux kernel regression tracking bot: #regzbot ^introduced aab9cf7b695413 #regzbot title drm: amdgpu: use-after-free and random computer hangs #regzbot monitor: https://lore.kernel.org/all/20221219104718.21677-1-christian.koenig@amd.com/ #regzbot fix: drm/amdgpu: grab extra fence reference for drm_sched_job_add_dependency #regzbot ignore-activity Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat) P.S.: As the Linux kernel's regression tracker I deal with a lot of reports and sometimes miss something important when writing mails like this. If that's the case here, don't hesitate to tell me in a public reply, it's in everyone's interest to set the public record straight.