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=-0.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 E5214C2BA2B for ; Tue, 7 Apr 2020 15:36:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B6F1D20768 for ; Tue, 7 Apr 2020 15:36:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=yahoo.ca header.i=@yahoo.ca header.b="LuiZA/a8" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729284AbgDGPgs (ORCPT ); Tue, 7 Apr 2020 11:36:48 -0400 Received: from sonic313-19.consmr.mail.gq1.yahoo.com ([98.137.65.82]:43881 "EHLO sonic313-19.consmr.mail.gq1.yahoo.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728917AbgDGPgs (ORCPT ); Tue, 7 Apr 2020 11:36:48 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.ca; s=s2048; t=1586273807; bh=DRcjw4RWlx/WffnvzoKrFTQcWvavqs2gXoWOXywXOCk=; h=Date:From:Subject:To:Cc:References:In-Reply-To:From:Subject; b=LuiZA/a8J4tRv8OVyXpyrJG3TSZ8cWvWlv0C8Hb7y2zk+OODgV2AEqCDG7eze/O7WeQ+PFtabVgv4k0/GjnJxWiEvPxQ9DwLmvlerAkqcBzQBU1u70H2oDTPovXKlqpU3lGGtlmRqOxurDoFu3pN95CSJpeodeHwHRy7bESmwphTdYTqvgfT+z2BLQPluu5lM4ML+3XBLr3O6U+TE2ibBz4/wbOO9OkMls+TohZU1H/rHEn85kLlX/Nt45+bttpCfWOuVLT0skXbPABJ3gaGmpgEJe78Czd3dJDuhGYIob05zGAR+ohb62P6S5scKbOYKyJbMQP2u8xvUU6gYjFYqA== X-YMail-OSG: ZZge5_4VM1kR52e0GUo2fNzjRFaCBHWfxv3eFEqMjiW_9RaNaQc0GXkvJCJiqIE blLtaswVknj.HLQ0tq50cqppuya9hxO4FMYBbwvzGBP.G.1PPbNwr9QGozst0N7RxnXEQztLPS4U OZECCg.DlMptgSP8YIx5uHu9nxLOW2fGdvHSj8bVLOL7aeyYHkAlShHyGkLFrKf_rh1PhsjSPWeh Z9B01Xeh3TcsGQyGNw1Twjb8bVbjwJ7kwCfUm7Rk7LunS8r0stFudDfsKWj1epUigHejRKjnivrq iZErCkyY8ofZxWYSszvlmCdg40JharWeEPQe.LNAuLETD8JRdg2DRCbf125WKyQFGtqSN9oUwv9r dehtJYhYwg8PU1pV91yrfp8bQRPBgeIV6Plyrtj6IIYLox0EdKZlyG9e5EuVy5PLJRaWAZs0dbKB ENHl4qzBtTgpRuIAbBRtEHKb8MOWW58uKYJVp681a7UBW4zIdThVI8ZhzIc.MMLT2AC42HZaGRU1 fCFgslw0pIF3ENIj2aUveZgqe_0hFT7EPyT2VSHbAc7NnaU8Lh7fHUV5ee6bUsMN06aIyoiEAWCS MUMD9UsHbd351IsRXRaXVzJOGvh9MsdaLtGgIQRxYYetjboypwjlG9CrqJzOncoLKrOVtFR_G70H 3yhvEJ3OUGXkGeMek4LUUfoyK_.IC0vbBUe.bn_A2yGIx4lhX1fsUc87l_VOrAm0sU3WQpM1945Q CjmkIBFjePN2atP1kIvJYfdJEnR0EnkVtwNOLy88bz_bLM1vSG8MACf2gYwygY6aaA3wQm4reNGx K01we4heQm1bV1hj6WfOdhGjglVO0SDKc_hEn44tuQQ3ahSMx5km_iFfVt2zy4V5VC.itVHKvUuQ wYnlCGxj6BDNTbpOzarAkWhJhvN1zgeiWvKXmyAH42yQ6PcFjZZc6NcKtf7QiDRw8FNziHcPV343 bmF.oZlF7zbDfEjicxH9BUHmJLoqFZ63G9q3bLk5Wn46t8wegXSMGlIDa.pXUe6DMsXb_oBOsGvW Gen_7eZ4vVRHgMgXzS02.VvbmROcQzVuXEp0Dh7igqbqvCWMXfm5MQq4X2D2anGxK9tpL_3LNBDQ UmlAIXTVRIMPX0VIIDW17OsaNxC4LIy2FQnpVpswgy8XThGlQgNvHpRfTIrN8spsim4LvK5enMN. 4YfvUu1s6bsY18FYwTXkyckVX1kZ8Omar5erlWhLXn25WrNROGO7wbkIBUUu8aXeHv2eF2BuDrG8 eDF.AppJEZsPCbWwrYRrznjUJK_O_RDbdPIB.8sqcFzstQhEpMWcFni4j.LY_O1YTlHvkWMBTLN6 A.WCHw50Nhut4OOKQhIfNc1mR2TxklNTq4DO1TbKgu0qoDLYd_0kjMujgMEbbNSrvuaE9DWZd2.C lKXXUpniCGnMLktTt43mSyiRV4A-- Received: from sonic.gate.mail.ne1.yahoo.com by sonic313.consmr.mail.gq1.yahoo.com with HTTP; Tue, 7 Apr 2020 15:36:47 +0000 Received: by smtp427.mail.ne1.yahoo.com (Oath Hermes SMTP Server) with ESMTPA ID 8d3a3a4d22c2dc4e05ca5abcebba6325; Tue, 07 Apr 2020 15:36:42 +0000 (UTC) Date: Tue, 07 Apr 2020 11:36:39 -0400 From: "Alex Xu (Hello71)" Subject: Re: Bad rss-counter state from drm/ttm, drm/vmwgfx: Support huge TTM pagefaults To: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Thomas =?iso-8859-1?q?Hellstr=F6m?= "(VMware)" Cc: Andrew Morton , Christian =?iso-8859-1?b?S/ZuaWc=?= , Dan Williams , =?iso-8859-1?b?Suly9G1l?= Glisse , "Kirill A. Shutemov" , linux-graphics-maintainer@vmware.com, Michal Hocko , pv-drivers@vmware.com, Ralph Campbell , Roland Scheidegger , "Matthew Wilcox (Oracle)" References: <1586138158.v5u7myprlp.none.ref@localhost> <1586138158.v5u7myprlp.none@localhost> <0b12b28c-5f42-b56b-ea79-6e3d1052b332@shipmail.org> <1586219716.1a3fyi6lh5.none@localhost> <37624a1f-8e6b-fe9c-8e0e-a9139e1bbe18@shipmail.org> In-Reply-To: <37624a1f-8e6b-fe9c-8e0e-a9139e1bbe18@shipmail.org> MIME-Version: 1.0 Message-Id: <1586273767.0q72rozj3x.none@localhost> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Mailer: WebService/1.1.15620 hermes Apache-HttpAsyncClient/4.1.4 (Java/11.0.6) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Excerpts from Thomas Hellstr=C3=B6m (VMware)'s message of April 7, 2020 7:2= 6 am: > On 4/7/20 2:38 AM, Alex Xu (Hello71) wrote: >> Excerpts from Thomas Hellstr=C3=B6m (VMware)'s message of April 6, 2020 = 5:04 pm: >>> Hi, >>> >>> On 4/6/20 9:51 PM, Alex Xu (Hello71) wrote: >>>> Using 314b658 with amdgpu, starting sway and firefox causes "BUG: Bad >>>> rss-counter state" and "BUG: non-zero pgtables_bytes on freeing mm" to >>>> start filling dmesg, and then closing programs causes more BUGs and >>>> hangs, and then everything grinds to a halt (can't start more programs= , >>>> can't even reboot through systemd). >>>> >>>> Using master and reverting that branch up to that point fixes the >>>> problem. >>>> >>>> I'm using a Ryzen 1600 and AMD Radeon RX 480 on an ASRock B450 Pro4 >>>> board with IOMMU enabled. >>> If you could try the attached patch, that'd be great! >>> >>> Thanks, >>> >>> Thomas >>> >> Yeah, that works too. Kernel config sent off-list. >> >> Regards, >> Alex. >=20 > Thanks. Do you want me to add your >=20 > Reported-by: and Tested-by: To this patch? >=20 > /Thomas >=20 >=20 Sure. Shouldn't we fix it properly though?