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bh=D0kbC6F7vVOkq6Rzvvsj1BprmGjj2NrtMTriJSxu1QI=; b=LcG44EXmnxZTB76SfFWaUq2sUVeXl+1mZHo0lM2wFqNRYAQJHN/HbOdOdyzWXHS5Re XPQnRz2SXjawOTtDSzpC5u1WU2ieBKtdai0fv4FXpTqRRC7qaPlWBd/+CnDgFhfuZgOZ Y3qfDbEMdxlFk1EzkLl1+a7c1Y2Za5s6DpromI+kSXN0f/tOesKGkmK6ZgHzwwi0PKkf Z3HPYfzUvjXt5zRFe5w9NMfM92Q13QF9WxB/bwbZN7qgVPSJUbTBR0+gjf92cwYSWHxw stNEcuF2oRPZhZtmH9aTErx1l+UQ/9trK73KD1Wan78uR0N7MzGXSkIVTxS5nCAD4q9q HmVQ== X-Gm-Message-State: APjAAAURGxOpKolxyyN/YUp13UZEbKDN+C3hE51kVU8jVcLqR092+Iav Xb6yp1SeBYRyMJ3PB0XHHA8= X-Google-Smtp-Source: APXvYqyCvPvn4Gs6NL8NdNRw0/8JH9Y8L8dex7TJJ8Xal2ZqZGu6YPzosZc3+zwG7oULya9WwUeUHw== X-Received: by 2002:a62:f208:: with SMTP id m8mr12957531pfh.108.1566001249601; Fri, 16 Aug 2019 17:20:49 -0700 (PDT) Received: from [10.1.192.154] ([66.170.99.95]) by smtp.gmail.com with ESMTPSA id a189sm8407228pfa.60.2019.08.16.17.20.47 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 16 Aug 2019 17:20:48 -0700 (PDT) Subject: Re: [Bug 204407] New: Bad page state in process Xorg To: Vlastimil Babka Cc: Matthew Wilcox , Qian Cai , Andrew Morton , bugzilla-daemon@bugzilla.kernel.org, Christian Koenig , Huang Rui , David Airlie , Daniel Vetter , dri-devel@lists.freedesktop.org, linux-mm@kvack.org, Joerg Roedel References: <20190802132306.e945f4420bc2dcddd8d34f75@linux-foundation.org> <20190802203344.GD5597@bombadil.infradead.org> <1564780650.11067.50.camel@lca.pw> <20190802225939.GE5597@bombadil.infradead.org> <45258da8-2ce7-68c2-1ba0-84f6c0e634b1@suse.cz> <0287aace-fec1-d2d1-370f-657e80477717@vandrovec.name> <6a45a9b1-81ad-72c4-8f06-5d2cd87278ef@suse.cz> From: Petr Vandrovec Message-ID: <83927e78-4882-5c14-58f6-cf6933024645@vandrovec.name> Date: Fri, 16 Aug 2019 17:20:45 -0700 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 PostboxApp/7.0.0b7 MIME-Version: 1.0 In-Reply-To: <6a45a9b1-81ad-72c4-8f06-5d2cd87278ef@suse.cz> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Vlastimil Babka wrote on 8/16/2019 5:47 AM: > On 8/15/19 9:13 PM, Petr Vandrovec wrote: >> With iommu=3Doff disks are visible, but USB keyboard (and other USB >> devices)=C2=A0does=C2=A0not=C2=A0work: >=20 > I've been told iommu=3Dsoft might help. Thanks. I've rebuilt kernel without IOMMU. Unfortunately I was not able to reproduce original problem with latest=20 kernel - neither with CMA nor without CMA. System seems stable as a rock= . This is the change on which I've tried to reproduce it with your=20 debugging patches: commit 41de59634046b19cd53a1983594a95135c656997 (HEAD -> master,=20 origin/master, origin/HEAD) Merge: e22a97a2a85d 1ee1119d184b Author: Linus Torvalds Date: Wed Aug 14 15:29:53 2019 -0700 Merge tag 'Wimplicit-fallthrough-5.3-rc5' of=20 git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux Petr