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Date: Wed, 29 Jul 2020 21:59:02 -0300 From: Rodrigo Madera <rodrigo.madera@...il.com> To: hch@....de Cc: christian.brauner@...ntu.com, linux-kernel@...r.kernel.org Subject: Re: bpfilter logging write errors in dmesg Christoph, I see the same issue on my AMD 3990x using v5.8rc7: [ 10.229424] bpfilter: Loaded bpfilter_umh pid 1906 [ 10.229467] Started bpfilter [ 10.229538] pos invalid: -131326014643272 [ 10.229539] bpfilter: write fail -22 [ 10.229603] pos invalid: -2127991714 [ 10.229604] bpfilter: write fail -22 [ 10.232222] bpfilter: Loaded bpfilter_umh pid 1908 [ 10.232292] Started bpfilter [ 10.232355] pos invalid: -131322530713744 [ 10.232357] bpfilter: write fail -22 [ 10.232389] pos invalid: -2127991714 [ 10.232390] bpfilter: write fail -22 [ 10.233986] bpfilter: Loaded bpfilter_umh pid 1911 [ 10.234056] Started bpfilter [ 10.234898] pos invalid: -2127991714 [ 10.234900] bpfilter: write fail -22 [ 10.234907] pos invalid: -2127991714 [ 10.234908] bpfilter: write fail -22 [ 10.235797] bpfilter: Loaded bpfilter_umh pid 1914 [ 10.235871] Started bpfilter [ 10.235928] pos invalid: -2127991714 [ 10.235929] bpfilter: write fail -22 [ 10.235936] pos invalid: -2127991714 [ 10.235936] bpfilter: write fail -22 [ 10.236834] bpfilter: Loaded bpfilter_umh pid 1916 [ 10.236897] Started bpfilter [ 10.236955] pos invalid: -2127991714 [ 10.236957] bpfilter: write fail -22 [ 10.236963] pos invalid: -2127991714 [ 10.236964] bpfilter: write fail -22 [ 10.237801] bpfilter: Loaded bpfilter_umh pid 1918 [ 10.237856] Started bpfilter [ 10.238463] pos invalid: -2127991714 [ 10.238465] bpfilter: write fail -22 [ 10.238487] pos invalid: -2127991714 [ 10.238488] bpfilter: write fail -22 [ 10.239232] bpfilter: Loaded bpfilter_umh pid 1921 [ 10.239293] Started bpfilter [ 10.239341] pos invalid: -131323777967304 [ 10.239342] bpfilter: write fail -22 [ 10.239362] pos invalid: -2127991714 [ 10.239363] bpfilter: write fail -22 [ 10.240024] bpfilter: Loaded bpfilter_umh pid 1923 [ 10.240084] Started bpfilter [ 10.240136] pos invalid: -131322329686184 [ 10.240137] bpfilter: write fail -22 [ 10.240158] pos invalid: -2127991714 [ 10.240159] bpfilter: write fail -22 [ 10.240822] bpfilter: Loaded bpfilter_umh pid 1925 [ 10.240885] Started bpfilter [ 10.240933] pos invalid: -131323778001336 [ 10.240935] bpfilter: write fail -22 [ 10.240955] pos invalid: -2127991714 [ 10.240955] bpfilter: write fail -22 [ 10.241625] bpfilter: Loaded bpfilter_umh pid 1927 [ 10.241685] Started bpfilter [ 10.241732] pos invalid: -131323135926520 [ 10.241733] bpfilter: write fail -22 [ 10.241754] pos invalid: -2127991714 [ 10.241754] bpfilter: write fail -22 [ 10.242411] bpfilter: Loaded bpfilter_umh pid 1929 [ 10.242472] Started bpfilter [ 10.242521] pos invalid: -131322329867000 [ 10.242522] bpfilter: write fail -22 [ 10.242544] pos invalid: -2127991714 [ 10.242545] bpfilter: write fail -22 [ 10.243204] bpfilter: Loaded bpfilter_umh pid 1931 [ 10.243267] Started bpfilter [ 10.243314] pos invalid: -131322329851800 [ 10.243315] bpfilter: write fail -22 [ 10.243335] pos invalid: -2127991714 [ 10.243335] bpfilter: write fail -22 [ 10.244014] bpfilter: Loaded bpfilter_umh pid 1933 [ 10.244079] Started bpfilter [ 10.244127] pos invalid: -131322329834712 [ 10.244128] bpfilter: write fail -22 [ 10.244148] pos invalid: -2127991714 [ 10.244148] bpfilter: write fail -22 [ 10.244809] bpfilter: Loaded bpfilter_umh pid 1935 [ 10.244875] Started bpfilter [ 10.244923] pos invalid: -131323135845432 [ 10.244924] bpfilter: write fail -22 [ 10.244944] pos invalid: -2127991714 [ 10.244944] bpfilter: write fail -22 [ 10.245613] bpfilter: Loaded bpfilter_umh pid 1937 [ 10.245677] Started bpfilter [ 10.245724] pos invalid: -131323135831656 [ 10.245725] bpfilter: write fail -22 [ 10.245753] pos invalid: -2127991714 [ 10.245753] bpfilter: write fail -22 [ 10.246426] bpfilter: Loaded bpfilter_umh pid 1939 [ 10.246489] Started bpfilter [ 10.246536] pos invalid: -131323135812112 [ 10.246537] bpfilter: write fail -22 [ 10.246557] pos invalid: -2127991714 [ 10.246557] bpfilter: write fail -22 [ 10.247221] bpfilter: Loaded bpfilter_umh pid 1941 [ 10.247283] Started bpfilter [ 10.247332] pos invalid: -131323135799288 [ 10.247333] bpfilter: write fail -22 [ 10.247353] pos invalid: -2127991714 [ 10.247354] bpfilter: write fail -22 [ 10.248028] bpfilter: Loaded bpfilter_umh pid 1943 [ 10.248093] Started bpfilter [ 10.248141] pos invalid: -131322329819936 [ 10.248142] bpfilter: write fail -22 [ 10.248162] pos invalid: -2127991714 [ 10.248163] bpfilter: write fail -22 [ 11.683140] bpfilter: Loaded bpfilter_umh pid 1997 [ 11.683214] Started bpfilter [ 11.683279] pos invalid: -131322964802512 [ 11.683281] bpfilter: write fail -22 [ 11.683325] pos invalid: -2127991714 [ 11.683326] bpfilter: write fail -22 [ 11.685772] bpfilter: Loaded bpfilter_umh pid 1999 [ 11.685853] Started bpfilter [ 11.685961] pos invalid: -131323223158688 [ 11.685964] bpfilter: write fail -22 [ 11.686032] pos invalid: -2127991714 [ 11.686033] bpfilter: write fail -22 [ 11.687562] bpfilter: Loaded bpfilter_umh pid 2002 [ 11.687623] Started bpfilter [ 11.688581] pos invalid: -2127991714 [ 11.688584] bpfilter: write fail -22 [ 11.688592] pos invalid: -2127991714 [ 11.688593] bpfilter: write fail -22 [ 11.689646] bpfilter: Loaded bpfilter_umh pid 2005 [ 11.689731] Started bpfilter [ 11.689911] pos invalid: -2127991714 [ 11.689913] bpfilter: write fail -22 [ 11.689922] pos invalid: -2127991714 [ 11.689923] bpfilter: write fail -22 [ 11.690982] bpfilter: Loaded bpfilter_umh pid 2007 [ 11.691047] Started bpfilter [ 11.691151] pos invalid: -2127991714 [ 11.691154] bpfilter: write fail -22 [ 11.691162] pos invalid: -2127991714 [ 11.691163] bpfilter: write fail -22 [ 11.692329] bpfilter: Loaded bpfilter_umh pid 2009 [ 11.692407] Started bpfilter [ 11.693206] pos invalid: -2127991714 [ 11.693208] bpfilter: write fail -22 [ 11.693250] pos invalid: -2127991714 [ 11.693251] bpfilter: write fail -22 [ 11.694309] bpfilter: Loaded bpfilter_umh pid 2012 [ 11.694369] Started bpfilter [ 11.694470] pos invalid: -131324827355584 [ 11.694472] bpfilter: write fail -22 [ 11.694519] pos invalid: -2127991714 [ 11.694520] bpfilter: write fail -22 [ 11.695513] bpfilter: Loaded bpfilter_umh pid 2014 [ 11.695573] Started bpfilter [ 11.695669] pos invalid: -131324827335488 [ 11.695672] bpfilter: write fail -22 [ 11.695707] pos invalid: -2127991714 [ 11.695708] bpfilter: write fail -22 [ 11.696594] bpfilter: Loaded bpfilter_umh pid 2016 [ 11.696667] Started bpfilter [ 11.696822] pos invalid: -131322940756688 [ 11.696824] bpfilter: write fail -22 [ 11.696876] pos invalid: -2127991714 [ 11.696877] bpfilter: write fail -22 [ 11.697871] bpfilter: Loaded bpfilter_umh pid 2018 [ 11.697941] Started bpfilter [ 11.698039] pos invalid: -131323134120976 [ 11.698042] bpfilter: write fail -22 [ 11.698079] pos invalid: -2127991714 [ 11.698080] bpfilter: write fail -22 [ 11.698964] bpfilter: Loaded bpfilter_umh pid 2020 [ 11.699041] Started bpfilter [ 11.699137] pos invalid: -131323134075224 [ 11.699140] bpfilter: write fail -22 [ 11.699197] pos invalid: -2127991714 [ 11.699198] bpfilter: write fail -22 [ 11.700053] bpfilter: Loaded bpfilter_umh pid 2022 [ 11.700123] Started bpfilter [ 11.700233] pos invalid: -131326994695872 [ 11.700236] bpfilter: write fail -22 [ 11.700291] pos invalid: -2127991714 [ 11.700292] bpfilter: write fail -22 [ 11.701246] bpfilter: Loaded bpfilter_umh pid 2024 [ 11.701307] Started bpfilter [ 11.701401] pos invalid: -131324827369352 [ 11.701403] bpfilter: write fail -22 [ 11.701439] pos invalid: -2127991714 [ 11.701440] bpfilter: write fail -22 [ 11.702315] bpfilter: Loaded bpfilter_umh pid 2026 [ 11.702389] Started bpfilter [ 11.702484] pos invalid: -131322939518040 [ 11.702487] bpfilter: write fail -22 [ 11.702522] pos invalid: -2127991714 [ 11.702523] bpfilter: write fail -22 [ 11.703348] bpfilter: Loaded bpfilter_umh pid 2028 [ 11.703423] Started bpfilter [ 11.703535] pos invalid: -131322939469856 [ 11.703538] bpfilter: write fail -22 [ 11.703573] pos invalid: -2127991714 [ 11.703574] bpfilter: write fail -22 [ 11.704497] bpfilter: Loaded bpfilter_umh pid 2030 [ 11.704572] Started bpfilter [ 11.704666] pos invalid: -131322939428640 [ 11.704668] bpfilter: write fail -22 [ 11.704718] pos invalid: -2127991714 [ 11.704719] bpfilter: write fail -22 [ 11.705536] bpfilter: Loaded bpfilter_umh pid 2032 [ 11.705605] Started bpfilter [ 11.705700] pos invalid: -131322939385792 [ 11.705702] bpfilter: write fail -22 [ 11.705738] pos invalid: -2127991714 [ 11.705739] bpfilter: write fail -22 [ 11.706598] bpfilter: Loaded bpfilter_umh pid 2034 [ 11.706666] Started bpfilter [ 11.706740] pos invalid: -131322939340512 [ 11.706741] bpfilter: write fail -22 [ 11.706768] pos invalid: -2127991714 [ 11.706768] bpfilter: write fail -22 [ 13.141791] bpfilter: Loaded bpfilter_umh pid 2086 [ 13.141840] Started bpfilter [ 13.141919] pos invalid: -131323223055336 [ 13.141920] bpfilter: write fail -22 [ 13.141983] pos invalid: -2127991714 [ 13.141984] bpfilter: write fail -22 [ 13.144245] bpfilter: Loaded bpfilter_umh pid 2088 [ 13.144312] Started bpfilter [ 13.144418] pos invalid: -131340777111464 [ 13.144420] bpfilter: write fail -22 [ 13.144457] pos invalid: -2127991714 [ 13.144458] bpfilter: write fail -22 [ 13.145931] bpfilter: Loaded bpfilter_umh pid 2091 [ 13.146005] Started bpfilter [ 13.146859] pos invalid: -2127991714 [ 13.146861] bpfilter: write fail -22 [ 13.146869] pos invalid: -2127991714 [ 13.146870] bpfilter: write fail -22 [ 13.147936] bpfilter: Loaded bpfilter_umh pid 2094 [ 13.148012] Started bpfilter [ 13.148142] pos invalid: -2127991714 [ 13.148144] bpfilter: write fail -22 [ 13.148152] pos invalid: -2127991714 [ 13.148153] bpfilter: write fail -22 [ 13.149176] bpfilter: Loaded bpfilter_umh pid 2096 [ 13.149249] Started bpfilter [ 13.149375] pos invalid: -2127991714 [ 13.149377] bpfilter: write fail -22 [ 13.149385] pos invalid: -2127991714 [ 13.149386] bpfilter: write fail -22 [ 13.150281] bpfilter: Loaded bpfilter_umh pid 2098 [ 13.150338] Started bpfilter [ 13.151152] pos invalid: -2127991714 [ 13.151154] bpfilter: write fail -22 [ 13.151181] pos invalid: -2127991714 [ 13.151182] bpfilter: write fail -22 [ 13.151976] bpfilter: Loaded bpfilter_umh pid 2101 [ 13.152039] Started bpfilter [ 13.152138] pos invalid: -131327007189936 [ 13.152140] bpfilter: write fail -22 [ 13.152177] pos invalid: -2127991714 [ 13.152178] bpfilter: write fail -22 [ 13.153016] bpfilter: Loaded bpfilter_umh pid 2103 [ 13.153090] Started bpfilter [ 13.153193] pos invalid: -131322273461040 [ 13.153196] bpfilter: write fail -22 [ 13.153238] pos invalid: -2127991714 [ 13.153239] bpfilter: write fail -22 [ 13.154129] bpfilter: Loaded bpfilter_umh pid 2105 [ 13.154207] Started bpfilter [ 13.154318] pos invalid: -131322273403824 [ 13.154320] bpfilter: write fail -22 [ 13.154363] pos invalid: -2127991714 [ 13.154364] bpfilter: write fail -22 [ 13.155105] bpfilter: Loaded bpfilter_umh pid 2107 [ 13.155178] Started bpfilter [ 13.155276] pos invalid: -131340782823592 [ 13.155279] bpfilter: write fail -22 [ 13.155313] pos invalid: -2127991714 [ 13.155314] bpfilter: write fail -22 [ 13.156060] bpfilter: Loaded bpfilter_umh pid 2109 [ 13.156140] Started bpfilter [ 13.156221] pos invalid: -131340782780136 [ 13.156223] bpfilter: write fail -22 [ 13.156271] pos invalid: -2127991714 [ 13.156272] bpfilter: write fail -22 [ 13.157018] bpfilter: Loaded bpfilter_umh pid 2111 [ 13.157089] Started bpfilter [ 13.157198] pos invalid: -131323223027832 [ 13.157200] bpfilter: write fail -22 [ 13.157265] pos invalid: -2127991714 [ 13.157266] bpfilter: write fail -22 [ 13.158051] bpfilter: Loaded bpfilter_umh pid 2113 [ 13.158138] Started bpfilter [ 13.158249] pos invalid: -131322419105776 [ 13.158252] bpfilter: write fail -22 [ 13.158307] pos invalid: -2127991714 [ 13.158308] bpfilter: write fail -22 [ 13.159041] bpfilter: Loaded bpfilter_umh pid 2115 [ 13.159113] Started bpfilter [ 13.159208] pos invalid: -131323223046528 [ 13.159210] bpfilter: write fail -22 [ 13.159245] pos invalid: -2127991714 [ 13.159246] bpfilter: write fail -22 [ 13.159991] bpfilter: Loaded bpfilter_umh pid 2117 [ 13.160085] Started bpfilter [ 13.160181] pos invalid: -131324280863928 [ 13.160184] bpfilter: write fail -22 [ 13.160241] pos invalid: -2127991714 [ 13.160242] bpfilter: write fail -22 [ 13.160999] bpfilter: Loaded bpfilter_umh pid 2119 [ 13.161074] Started bpfilter [ 13.161156] pos invalid: -131322939045512 [ 13.161158] bpfilter: write fail -22 [ 13.161195] pos invalid: -2127991714 [ 13.161195] bpfilter: write fail -22 [ 13.161931] bpfilter: Loaded bpfilter_umh pid 2121 [ 13.162004] Started bpfilter [ 13.162101] pos invalid: -131323079063632 [ 13.162103] bpfilter: write fail -22 [ 13.162139] pos invalid: -2127991714 [ 13.162140] bpfilter: write fail -22 [ 13.162886] bpfilter: Loaded bpfilter_umh pid 2123 [ 13.162956] Started bpfilter [ 13.163053] pos invalid: -131340782774864 [ 13.163055] bpfilter: write fail -22 [ 13.163091] pos invalid: -2127991714 [ 13.163092] bpfilter: write fail -22 After that, the bpfilter output rests. If I try to start docker, then new bpfilter errors as the ones above are printed again, with increasing PIDs and similar pseudo-random-looking positions. I have not tested with other bpfilter-using programs. Let me know if my system has any information that might help in this matter. Best regards, Madera
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