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a=rsa-sha256; c=relaxed/relaxed; d=yandex.ru; s=mail; t=1726072654; bh=89ITug00CE3vC6EVZDzJf7qAxAMCYRgDjzV+rnWdxnw=; h=Subject:Cc:To:From:Date:Message-ID; b=FVELdrJaSmfccgVJGQYXlLObgo3BvpmF/J0Zx6gzC5+bb8YSAHMgkseFKITRyHW5n itfqqy6yiu8Rxdto/RIvn7uwgzXs6coakPq2bMMJ/mPEn0ec0ldAHhnYqhqy1zOXHY xW5dKBPlnB+fVDpWAiaC9CNt4lvq97kbAThV5YtE= Message-ID: Date: Wed, 11 Sep 2024 19:37:33 +0300 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Content-Language: en-US To: linux-mm@kvack.org From: Dmitry Antipov Autocrypt: addr=dmantipov@yandex.ru; keydata= xsDNBGBYjL8BDAC1iFIjCNMSvYkyi04ln+5sTl5TCU9O5Ot/kaKKCstLq3TZ1zwsyeqF7S/q vBVSmkWHQaj80BlT/1m7BnFECMNV0M72+cTGfrX8edesMSzv/id+M+oe0adUeA07bBc2Rq2V YD88b1WgIkACQZVFCo+y7zXY64cZnf+NnI3jCPRfCKOFVwtj4OfkGZfcDAVAtxZCaksBpTHA tf24ay2PmV6q/QN+3IS9ZbHBs6maC1BQe6clFmpGMTvINJ032oN0Lm5ZkpNN+Xcp9393W34y v3aYT/OuT9eCbOxmjgMcXuERCMok72uqdhM8zkZlV85LRdW/Vy99u9gnu8Bm9UZrKTL94erm 0A9LSI/6BLa1Qzvgwkyd2h1r6f2MVmy71/csplvaDTAqlF/4iA4TS0icC0iXDyD+Oh3EfvgP iEc0OAnNps/SrDWUdZbJpLtxDrSl/jXEvFW7KkW5nfYoXzjfrdb89/m7o1HozGr1ArnsMhQC Uo/HlX4pPHWqEAFKJ5HEa/0AEQEAAc0kRG1pdHJ5IEFudGlwb3YgPGRtYW50aXBvdkB5YW5k ZXgucnU+wsEJBBMBCAAzFiEEgi6CDXNWvLfa6d7RtgcLSrzur7cFAmYEXUsCGwMFCwkIBwIG FQgJCgsCBRYCAwEAAAoJELYHC0q87q+3ghQL/10U/CvLStTGIgjRmux9wiSmGtBa/dUHqsp1 W+HhGrxkGvLheJ7KHiva3qBT++ROHZxpIlwIU4g1s6y3bqXqLFMMmfH1A+Ldqg1qCBj4zYPG lzgMp2Fjc+hD1oC7k7xqxemrMPstYQKPmA9VZo4w3+97vvnwDNO7iX3r0QFRc9u19MW36wq8 6Yq/EPTWneEDaWFIVPDvrtIOwsLJ4Bu8v2l+ejPNsEslBQv8YFKnWZHaH3o+9ccAcgpkWFJg Ztj7u1NmXQF2HdTVvYd2SdzuJTh3Zwm/n6Sw1czxGepbuUbHdXTkMCpJzhYy18M9vvDtcx67 10qEpJbe228ltWvaLYfHfiJQ5FlwqNU7uWYTKfaE+6Qs0fmHbX2Wlm6/Mp3YYL711v28b+lp 9FzPDFqVPfVm78KyjW6PcdFsKu40GNFo8gFW9e8D9vwZPJsUniQhnsGF+zBKPeHi/Sb0DtBt enocJIyYt/eAY2hGOOvRLDZbGxtOKbARRwY4id6MO4EuSs7AzQRgWIzAAQwAyZj14kk+OmXz TpV9tkUqDGDseykicFMrEE9JTdSO7fiEE4Al86IPhITKRCrjsBdQ5QnmYXcnr3/9i2RFI0Q7 Evp0gD242jAJYgnCMXQXvWdfC55HyppWazwybDiyufW/CV3gmiiiJtUj3d8r8q6laXMOGky3 7sRlv1UvjGyjwOxY6hBpB2oXdbpssqFOAgEw66zL54pazMOQ6g1fWmvQhUh0TpKjJZRGF/si b/ifBFHA/RQfAlP/jCsgnX57EOP3ALNwQqdsd5Nm1vxPqDOtKgo7e0qx3sNyk05FFR+f9px6 eDbjE3dYfsicZd+aUOpa35EuOPXS0MC4b8SnTB6OW+pmEu/wNzWJ0vvvxX8afgPglUQELheY +/bH25DnwBnWdlp45DZlz/LdancQdiRuCU77hC4fnntk2aClJh7L9Mh4J3QpBp3dh+vHyESF dWo5idUSNmWoPwLSYQ/evKynzeODU/afzOrDnUBEyyyPTknDxvBQZLv0q3vT0UiqcaL7ABEB AAHCwPYEGAEIACAWIQSCLoINc1a8t9rp3tG2BwtKvO6vtwUCZgRdSwIbDAAKCRC2BwtKvO6v t9sFC/9Ga7SI4CaIqfkye1EF7q3pe+DOr4NsdsDxnPiQuG39XmpmJdgNI139TqroU5VD7dyy 24YjLTH6uo0+dcj0oeAk5HEY7LvzQ8re6q/omOi3V0NVhezdgJdiTgL0ednRxRRwNDpXc2Zg kg76mm52BoJXC7Kd/l5QrdV8Gq5WJbLA9Kf0pTr1QEf44bVR0bajW+0Lgyb7w4zmaIagrIdZ fwuYZWso3Ah/yl6v1//KP2ppnG0d9FGgO9iz576KQZjsMmQOM7KYAbkVPkZ3lyRJnukrW6jC bdrQgBsPubep/g9Ulhkn45krX5vMbP3wp1mJSuNrACQFbpJW3t0Da4DfAFyTttltVntr/ljX 5TXWnMCmaYHDS/lP20obHMHW1MCItEYSIn0c5DaAIfD+IWAg8gn7n5NwrMj0iBrIVHBa5mRp KkzhwiUObL7NO2cnjzTQgAVUGt0MSN2YfJwmSWjKH6uppQ7bo4Z+ZEOToeBsl6waJnjCL38v A/UwwXBRuvydGV0= Cc: lvc-project@linuxtesting.org Subject: Debugging memory leak which depends on CPU topology Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: 8753AC0008 X-Stat-Signature: 96qoec4g3ifmkminhb4i9cxi517r84ec X-Rspam-User: X-HE-Tag: 1726072656-675150 X-HE-Meta: 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 564Mc9gs 62WXOPYqkwuY0XJl94/BUtwOOV7aRU3zt0zzVkox5poGmcGHjYe34TiLQScVXKLh0WdMTpYTYIogJmhYjKE1fGFcEDC04oS/lG6AJ2f+E3R4Vs9tgLxmgJxsSrW3Wpah5UO5pSchjucn9SBmCUY9xF/QWNvJWXqE/EqjbQcI48jEqTV/gL3fnzCJ7xKgAihr2ybptn5wg0rLkEe6r3JkIILwMF1FYHiSHd64uIJToXXyKd7ds0VK7L4DcMz9G2UX2MCalXOXBTfvZym7SmXKoeZAx5jkXxa9CLnIRYX18VxcTKMOW+GOhqGwPRkF9Eci2eeybwUGJ1PeyfYTdYPCOBPmy8wRVrnQajq66TocU3d8EQTNUVZdGTSbSbEOTa6i1TxD58NAoMQjXYawbdKDzoSAiIJJmp/zajAy6ih2vDmtaG9U= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000273, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hello, are there any hints for debugging kernel memory leak which seems depends on CPU topology? There is a syzbot reproducer which causes an OOM killer invocation nearly in a minute when running in a QEMU VM with '-m 8G -smp 4,sockets=4,cores=1' but not with '-m 8G -smp 8,sockets=4,cores=2'. To whom it may be interesting, the one is https://syzkaller.appspot.com/text?tag=ReproC&x=10b60342980000, and it produces an extremely high pressure on 'net_hotdata.skbuff_cache' and 'net_hotdata.skb_small_head_cache'. Thanks in advance, Dmitry