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Howlett" Cc: Bert Karwatzki , Andrew Morton , linux-mm@kvack.org Subject: Re: [PATCH v2 00/15] Avoid MAP_FIXED gap exposure Date: Wed, 3 Jul 2024 16:30:39 +0200 Message-ID: <20240703143041.18446-1-spasswolf@web.de> X-Mailer: git-send-email 2.45.2 In-Reply-To: tjanbvfr5s5pzroocqqv7hm2ppz4mmxeds2rlm5qdk6uikjugb@suq5tkjmlxl3 References: MIME-Version: 1.0 X-Provags-ID: V03:K1:2utcF1TFiSN4GW2cH8iotTp+pKCNAQqKDPjtwwSddyqLm8QbILR kJOApNSomwHycXoZ+4hd8LzDYlK4CO3YW3rHFNXgME1Azx0tJATDyqC5ZUunLplpcfDGlG4 6duJ7RhbjjT27Sq61qn1L0xnhd7vkcTazzyyWEobSsxk+tpnCfFT7DwWbHgbsdWlFx0TmHb K46ZwE3BCOjNwiWHB8URg== UI-OutboundReport: notjunk:1;M01:P0:LoIKUKgDlPk=;MeuWD+2dg2ejFmPeoOcfJGNPaHN aW3JMg0bLQ6iZWrORJIJhjNdVNoaV21OdHGup0I+XJrEcFYnZm+35Yb6i834Iz6AZofqZaA87 /5LmnqbB3uXCc2XOmOaT8IF4Pijn9QNS8pMRBCO+MOBCxfJpWpjjthpf+4bVV4Le6KGzkNWIk AstNV/zQ8inVZoywDko7QTzEXA7ny0lK7VSz4bnscP1MdsXjkStxO2MeisUvix+oxsSCoxqUI puecqM6Eh6jt+q9J2HIpa9DS0ZMbWrbYrgJ2R4bmvy6O+kEDvsWoM6AlINWOUNLwHX19WfxRM JIDcOVhahkxbB0c5RkxZCiJfJJlLDSnxCizsq4+e5GPBu0zWOSoAj4d59cj8XYeeLDGUi8xEW K1mg5YKcVwEkJj8uEyTYwyNCUx3x6Kf7B5V5VC2ONpBtDXuVochs37bqEZU95qdGDq5k+toFN BQCswWiygY5Rt3yPFwciXeEflL9aABLI7u2vcSFn/0U8txDPa7NGxh/egLjPGKDo/PhKL7lHW j8lrp/VKu2sez2HlfQt3zQjzqSd1rPfEcNC2t962iCc2nOzOFxBBWT8xMSlwfujPz8Rv75ILK kfGaKAr7GLUlJS8860CnPiK2ghxC4nzXGpuy19Di0u2Rch4zgl34WBYlt+cT//t+5e8LP2oSm 6nk2y9S8Uzv9ikRRR1H5KqZrfKCZ5UuCkMZNxfMpGS5K5qRVKu2oWU+tQ1Jw98wEYVKblotBM dUyRGu6y/xsznSI8Wf99BHotYPkemo7njrbuBoO/2CfIp6p3ZZqsvfVXVhhnH3rHt2HcRqFMk pQFTaVvMZ4gB6y5YL+GrHBGrSQP0kP91Pq8U0foAVVLz4= X-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 78648C000A X-Stat-Signature: chsw9y69i5hjxk1w3nyy141j8kk43gex X-HE-Tag: 1720017046-766737 X-HE-Meta: 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 IChqErRn 4i2qIjA9hU+FCEnOA4xsdQvRxnhW+/ZXm5kVvoX3APrkh517L3PxfW+Bhulpx4iSn455D+Cd1c9YOOhpZH49UWthFEn3BhDetl+1qjooCapvL0G91beId46O+JeouamMlhZZkadvwedTA/R1DPGXSCFx4QioZeXSpoE30lgTkKGIbvU8lIIHyu+8pHJOv9NWDTaFfPC2m832ZPi7MC1vptNX8JOcWrgrQhWtfJnoDug8QvzU9bUmaf2jtDZkFjkbgwE+M X-Bogosity: Ham, tests=bogofilter, spamicity=0.038040, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: > Thanks. Is this the first error printed in the kern.log? Yes. Uptime was about an hour when it occurred. > It could very likely be me, but I don't know how the count would have > errors so late in the process life cycle - do you have > CONFIG_DEBUG_VM_MAPLE_TREE enabled? This would check the count against > the tree on modifications and would narrow down where things could have > gone wrong. Unfortunately, the panicking kernel was compiled without CONFIG_DEBUG_VM_MAPLE_TREE. After the error I recompiled it with that option enabled. This kernel is running for about 3 hours without the error reappearing. Bert Karwatzki