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[73.252.184.5]) by smtp.gmail.com with ESMTPSA id t6sm5463968pgu.23.2019.08.02.14.25.17 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 02 Aug 2019 14:25:18 -0700 (PDT) Subject: Re: [Bug 204407] New: Bad page state in process Xorg To: Andrew Morton Cc: bugzilla-daemon@bugzilla.kernel.org, Christian Koenig , Huang Rui , David Airlie , Daniel Vetter , dri-devel@lists.freedesktop.org, linux-mm@kvack.org References: <20190802132306.e945f4420bc2dcddd8d34f75@linux-foundation.org> From: Petr Vandrovec Message-ID: Date: Fri, 2 Aug 2019 14:25:14 -0700 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 PostboxApp/7.0.0b3 MIME-Version: 1.0 In-Reply-To: <20190802132306.e945f4420bc2dcddd8d34f75@linux-foundation.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit 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: Andrew Morton wrote on 8/2/2019 1:23 PM: > (switched to email. Please respond via emailed reply-to-all, not via the > bugzilla web interface). > > On Thu, 01 Aug 2019 22:34:16 +0000 bugzilla-daemon@bugzilla.kernel.org wrote: > >> [259701.549382] Code: 10 e9 67 ff ff ff 0f 1f 44 00 00 48 8b 15 b1 6c 0c 00 f7 >> d8 64 89 02 48 c7 c0 ff ff ff ff e9 6b ff ff ff b8 0b 00 00 00 0f 05 <48> 3d 01 >> f0 ff ff 73 01 c3 48 8b 0d 89 6c 0c 00 f7 d8 64 89 01 48 >> [259701.549382] RSP: 002b:00007ffe529db138 EFLAGS: 00000206 ORIG_RAX: >> 000000000000000b >> [259701.549382] RAX: ffffffffffffffda RBX: 0000564a5eabce70 RCX: >> 00007f504d0ec1d7 >> [259701.549382] RDX: 00007ffe529db140 RSI: 0000000000400000 RDI: >> 00007f5044b65000 >> [259701.549382] RBP: 0000564a5eafe460 R08: 000000000000000b R09: >> 000000010283e000 >> [259701.549382] R10: 0000000000000001 R11: 0000000000000206 R12: >> 0000564a5e475b08 >> [259701.549382] R13: 0000564a5e475c80 R14: 00007ffe529db190 R15: >> 0000000000000c80 >> [259701.707238] Disabling lock debugging due to kernel taint > > I assume the above is misbehaviour in the DRM code? Most probably. When I switched back to 5.2, crashes were gone, but log was filled with 11 millions of messages complaining about alloc_contig_range problems: [22042.108043] alloc_contig_range: [106f118, 106f119) PFNs busy [22042.114400] alloc_contig_range: [106f11c, 106f11d) PFNs busy [22042.120787] alloc_contig_range: [106f11d, 106f11e) PFNs busy [22047.093057] alloc_contig_range: 47963 callbacks suppressed [22047.093058] alloc_contig_range: [106f117, 106f118) PFNs busy [22047.105576] alloc_contig_range: [106f118, 106f119) PFNs busy [22047.111937] alloc_contig_range: [106f11c, 106f11d) PFNs busy [22047.118329] alloc_contig_range: [106f11d, 106f11e) PFNs busy In total there is 9735 messages logged individually, and 11 million suppressed: petr-dev3:~$ dmesg | grep alloc_contig.*PFNs | wc -l 9735 petr-dev3:~$ expr `echo \`dmesg | grep alloc_contig.*callbacks | cut -d' ' -f3\` | sed -e 's/ / + /'g` 11333722 So it could be my problems are caused by new Xorg driver. After I disabled CMA system is stable on 5.2. I did not try 5.3-rc2 yet. Petr