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 9E0B9C433EF for ; Wed, 25 May 2022 13:47:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240403AbiEYNrY (ORCPT ); Wed, 25 May 2022 09:47:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45372 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229779AbiEYNrU (ORCPT ); Wed, 25 May 2022 09:47:20 -0400 Received: from mail-ed1-x532.google.com (mail-ed1-x532.google.com [IPv6:2a00:1450:4864:20::532]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EF0802CE24 for ; Wed, 25 May 2022 06:47:19 -0700 (PDT) Received: by mail-ed1-x532.google.com with SMTP id t26so2014060edt.0 for ; Wed, 25 May 2022 06:47:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=message-id:subject:from:to:date:content-transfer-encoding :user-agent:mime-version; bh=BQI0MM9mGzf2vAfQtbRgaX49I/EIbgEv06vyRUHl5E4=; b=LGoqhAUBF/M58vXaLWQVnCAAvoVqjcyqxOHhMPHMNVr0GfGjsYkt9IUzmhyT4Ud8U1 FyupkHT7Ayck+WnVEZ8DBRiEn6DYxqa31UogXejlPOUQnYy5vICwLmjD4RYAxeUisIzF BXQ5WSYY58aU+MGve4LRrvO94G6F9Sajh2OGwE4L5IAaFdyoK2bE8evvoUMOikjpSmLj VPmbdFJrOmwheFIKtDYY9CPYhTqdVFc4agfDkWv5EgGPotzw+eOdYqhstZWcLw0ii2HO TgeAWMsSyRD8S5Urxdpb+9A/DlX4ywIlm7Izux0BqrfYcEWvtTe7Ti9PF3mxGgqafPTj hA7g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:subject:from:to:date :content-transfer-encoding:user-agent:mime-version; bh=BQI0MM9mGzf2vAfQtbRgaX49I/EIbgEv06vyRUHl5E4=; b=U85lBFmU86eODDM8eYswQWLJnI7UhG+bIBwPDBoWLAt5Yv/rXPHpzb7oIrorPOebgZ OlBiUlaVDF/raJyG92qR3/pfRUPAwwilkcs1DSxD9eRru244QWYMI9KAK0EPwGx50azw UoKED0zwh9CHkAFw1lQgu45U/88cFrPmocofPhE7YNJpklcHdkOK5f9R8PYoMhEso7u1 vvDOSI92BPTGKCGrAp79fevFoTCKBqv6zwh8JIjX12T2cPg+oJHeptKu8ISyo89YpQNx f9LYzHFNLAo99NFuTyebfjFBXpa/YssaoYBRhRlh4ejOG12yKt3UbttjVrxZOrLwU+Zg PYXg== X-Gm-Message-State: AOAM530EnMSvw1kpPAoDj2Se4oS9Cj6UuScvb873l7Ym7gYTwMWWK1nm 9cxO5WLhOcwpapFxXSArFCJ1WypadCE= X-Google-Smtp-Source: ABdhPJxbbDjdk9sI19QAfQ7/M8zWGloGRQrACk4Naqhv932foFGAHCEWb3/sdJ3TS+3vgGy78yDZEA== X-Received: by 2002:a05:6402:1150:b0:42a:9dbf:8860 with SMTP id g16-20020a056402115000b0042a9dbf8860mr34497063edw.350.1653486438481; Wed, 25 May 2022 06:47:18 -0700 (PDT) Received: from [192.168.11.132] (193-226-240-62.pool.digikabel.hu. [193.226.240.62]) by smtp.gmail.com with ESMTPSA id q14-20020a50c34e000000b0042ba8658d1csm1476932edb.73.2022.05.25.06.47.16 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 25 May 2022 06:47:17 -0700 (PDT) Message-ID: <090267988a08ee969140a9593ece6bf10efdadad.camel@gmail.com> Subject: Intel GPU memory corruption From: =?ISO-8859-1?Q?Baltaz=E1r?= Radics To: linux-kernel@vger.kernel.org Date: Wed, 25 May 2022 15:47:16 +0200 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.44.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello! I have a Lenovo Thinkpad T460 with an integrated `Intel Corporation Skylake GT2 [HD Graphics 520]` GPU. Whenever there's intensive usage of it, after a while I experience memory corruption. Under normal usage, this results in random programs segfaulting for example. I have done several memory tests, including the Lenovo hardware diagnostics included with my BIOS and the userspace utility `memtester` as well. When the GPU is not used, no tests have found any issues, so I'm fairly certain my actual RAM sticks are fine. However, when I run e.g. `vkmark` or `mpv` alongside `memtester`, it will report issues after one or two loops. During the time I ran it, all failures happened at the same offset. Based on this, I suspect the video driver is the culprit somehow, but I'm still not entirely certain it's not a hardware issue. If anyone has ideas on how to track this down, I'd be happy to do some tests.