From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8012DC54E8D for ; Tue, 12 May 2020 14:27:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 524DC20746 for ; Tue, 12 May 2020 14:27:09 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="oR2pbgNY" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730345AbgELO1J (ORCPT ); Tue, 12 May 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X-Received: by 2002:a67:f4ce:: with SMTP id s14mr13366669vsn.99.1589293626847; Tue, 12 May 2020 07:27:06 -0700 (PDT) MIME-Version: 1.0 References: <5e955017351005f2cc4c0210f401935203de8496c56cb76f53547d435f502803.dsterba@suse.com> <29b671353fff0d745e2e99d420585c1f25fab107dd63b8e1a812c384875575b8.dsterba@suse.com> In-Reply-To: <29b671353fff0d745e2e99d420585c1f25fab107dd63b8e1a812c384875575b8.dsterba@suse.com> Reply-To: fdmanana@gmail.com From: Filipe Manana Date: Tue, 12 May 2020 15:26:55 +0100 Message-ID: Subject: Re: Bug 5.7-rc: write-time leaf corruption detected To: David Sterba Cc: linux-btrfs Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org On Tue, May 12, 2020 at 3:19 PM David Sterba wrote: > > Happened once in a VM, defaul mkfs/mount options. > > generic/457 [05:40:52][17606.984360] run fstests generic/457 = at 2020-05-04 05:40:52 > [17607.625840] BTRFS: device fsid ae51523a-71e7-4730-9097-faeca36779be de= vid 1 transid 5 /dev/vdb scanned by mkfs.btrfs (27036) > [17607.664903] BTRFS info (device vdb): disk space caching is enabled > [17607.667422] BTRFS info (device vdb): has skinny extents > [17607.669552] BTRFS info (device vdb): flagging fs with big metadata fea= ture > [17607.681613] BTRFS info (device vdb): checking UUID tree > [17607.921588] BTRFS: device fsid 16238d8a-1af3-4fa1-b3bc-fd6f04469192 de= vid 1 transid 5 /dev/mapper/logwrites-test scanned by mkfs.btrfs (27101) > [17607.948085] BTRFS info (device dm-0): turning on sync discard > [17607.952647] BTRFS info (device dm-0): disk space caching is enabled > [17607.955088] BTRFS info (device dm-0): has skinny extents > [17607.956924] BTRFS info (device dm-0): flagging fs with big metadata fe= ature > [17607.966128] BTRFS info (device dm-0): checking UUID tree > [17608.092098] BTRFS critical (device dm-0): corrupt leaf: root=3D1844674= 4073709551610 block=3D30949376 slot=3D104, csum end range (13807616) goes b= eyond the start range (13717504) of the next csum item > [17608.098129] BTRFS info (device dm-0): leaf 30949376 gen 6 total ptrs 1= 21 free space 6325 owner 18446744073709551610 > [17608.102727] BTRFS info (device dm-0): refs 2 lock (w:0 r:0 bw:0 br:0 s= w:0 sr:0) lock_owner 0 current 27162 > [17608.106426] item 0 key (257 1 0) itemoff 16123 itemsize 160 > [17608.108766] inode generation 6 size 262144 mode 100600 > [17608.110947] item 1 key (257 12 256) itemoff 16103 itemsize 20 > [17608.112698] item 2 key (257 108 0) itemoff 16050 itemsize 53 > [17608.114568] extent data disk bytenr 13631488 nr 262144 > [17608.116352] extent data offset 0 nr 262144 ram 262144 > [17608.118082] item 3 key (258 1 0) itemoff 15890 itemsize 160 > [17608.119920] inode generation 6 size 262144 mode 100600 > [17608.121605] item 4 key (258 12 256) itemoff 15871 itemsize 19 > [17608.123293] item 5 key (258 108 0) itemoff 15818 itemsize 53 > [17608.125212] extent data disk bytenr 13905920 nr 4096 > [17608.126851] extent data offset 0 nr 4096 ram 4096 > [17608.128342] item 6 key (258 108 4096) itemoff 15765 itemsize 53 > [17608.130106] extent data disk bytenr 13631488 nr 262144 > [17608.131774] extent data offset 0 nr 4096 ram 262144 > [17608.133330] item 7 key (258 108 8192) itemoff 15712 itemsize 53 > [17608.135151] extent data disk bytenr 13631488 nr 262144 > [17608.136680] extent data offset 8192 nr 8192 ram 262144 > [17608.137931] item 8 key (258 108 16384) itemoff 15659 itemsize 53 > [17608.139257] extent data disk bytenr 13631488 nr 262144 > [17608.140939] extent data offset 204800 nr 16384 ram 262144 > [17608.142255] item 9 key (258 108 32768) itemoff 15606 itemsize 53 > [17608.143941] extent data disk bytenr 13910016 nr 28672 > [17608.145576] extent data offset 0 nr 28672 ram 28672 > [17608.147165] item 10 key (258 108 61440) itemoff 15553 itemsize 53 > [17608.148964] extent data disk bytenr 13631488 nr 262144 > [17608.150563] extent data offset 249856 nr 8192 ram 262144 > [17608.152204] item 11 key (258 108 69632) itemoff 15500 itemsize 53 > [17608.153974] extent data disk bytenr 13631488 nr 262144 > [17608.155588] extent data offset 69632 nr 126976 ram 262144 > [17608.157099] item 12 key (258 108 196608) itemoff 15447 itemsize 53 > [17608.158698] extent data disk bytenr 13938688 nr 4096 > [17608.160123] extent data offset 0 nr 4096 ram 4096 > [17608.161300] item 13 key (258 108 200704) itemoff 15394 itemsize 53 > [17608.162597] extent data disk bytenr 0 nr 0 > [17608.164057] extent data offset 0 nr 28672 ram 28672 > [17608.165782] item 14 key (258 108 229376) itemoff 15341 itemsize 53 > [17608.167691] extent data disk bytenr 13942784 nr 4096 > [17608.169259] extent data offset 0 nr 4096 ram 4096 > [17608.170821] item 15 key (258 108 233472) itemoff 15288 itemsize 53 > [17608.172687] extent data disk bytenr 13631488 nr 262144 > [17608.174310] extent data offset 233472 nr 12288 ram 262144 > [17608.175993] item 16 key (258 108 245760) itemoff 15235 itemsize 53 > [17608.177821] extent data disk bytenr 13946880 nr 16384 > [17608.179440] extent data offset 0 nr 16384 ram 16384 > [17608.181043] item 17 key (259 1 0) itemoff 15075 itemsize 160 > [17608.182796] inode generation 6 size 262144 mode 100600 > [17608.184424] item 18 key (259 12 256) itemoff 15056 itemsize 19 > [17608.186085] item 19 key (259 108 0) itemoff 15003 itemsize 53 > [17608.187859] extent data disk bytenr 13975552 nr 4096 > [17608.189525] extent data offset 0 nr 4096 ram 4096 > [17608.191074] item 20 key (259 108 4096) itemoff 14950 itemsize 53 > [17608.192816] extent data disk bytenr 13631488 nr 262144 > [17608.194464] extent data offset 0 nr 4096 ram 262144 > [17608.196206] item 21 key (259 108 8192) itemoff 14897 itemsize 53 > [17608.198212] extent data disk bytenr 13631488 nr 262144 > [17608.200048] extent data offset 8192 nr 106496 ram 262144 > [17608.201684] item 22 key (259 108 114688) itemoff 14844 itemsize 53 > [17608.203659] extent data disk bytenr 14217216 nr 49152 > [17608.205398] extent data offset 0 nr 49152 ram 49152 > [17608.207126] item 23 key (259 108 163840) itemoff 14791 itemsize 53 > [17608.209019] extent data disk bytenr 13631488 nr 262144 > [17608.210736] extent data offset 163840 nr 98304 ram 262144 > [17608.212371] item 24 key (261 1 0) itemoff 14631 itemsize 160 > [17608.222944] inode generation 6 size 262144 mode 100600 > [17608.224637] item 25 key (261 12 256) itemoff 14612 itemsize 19 > [17608.226400] item 26 key (261 108 0) itemoff 14559 itemsize 53 > [17608.228169] extent data disk bytenr 14123008 nr 4096 > [17608.229794] extent data offset 0 nr 4096 ram 4096 > [17608.231292] item 27 key (261 108 4096) itemoff 14506 itemsize 53 > [17608.233203] extent data disk bytenr 13631488 nr 262144 > [17608.234794] extent data offset 0 nr 4096 ram 262144 > [17608.236362] item 28 key (261 108 8192) itemoff 14453 itemsize 53 > [17608.238102] extent data disk bytenr 13631488 nr 262144 > [17608.239782] extent data offset 8192 nr 16384 ram 262144 > [17608.241587] item 29 key (261 108 24576) itemoff 14400 itemsize 53 > [17608.243431] extent data disk bytenr 13631488 nr 262144 > [17608.245176] extent data offset 212992 nr 36864 ram 262144 > [17608.246991] item 30 key (261 108 61440) itemoff 14347 itemsize 53 > [17608.248868] extent data disk bytenr 13631488 nr 262144 > [17608.250456] extent data offset 61440 nr 114688 ram 262144 > [17608.252333] item 31 key (261 108 176128) itemoff 14294 itemsize 53 > [17608.254343] extent data disk bytenr 14135296 nr 61440 > [17608.256131] extent data offset 0 nr 61440 ram 61440 > [17608.257857] item 32 key (261 108 237568) itemoff 14241 itemsize 53 > [17608.259864] extent data disk bytenr 13631488 nr 262144 > [17608.261484] extent data offset 237568 nr 24576 ram 262144 > [17608.263134] item 33 key (262 1 0) itemoff 14081 itemsize 160 > [17608.264865] inode generation 6 size 178311 mode 100600 > [17608.266625] item 34 key (262 12 256) itemoff 14062 itemsize 19 > [17608.268551] item 35 key (262 108 0) itemoff 14009 itemsize 53 > [17608.270363] extent data disk bytenr 14196736 nr 4096 > [17608.272019] extent data offset 0 nr 4096 ram 4096 > [17608.273505] item 36 key (262 108 4096) itemoff 13956 itemsize 53 > [17608.275387] extent data disk bytenr 13631488 nr 262144 > [17608.277125] extent data offset 0 nr 4096 ram 262144 > [17608.278780] item 37 key (262 108 8192) itemoff 13903 itemsize 53 > [17608.280507] extent data disk bytenr 13631488 nr 262144 > [17608.282163] extent data offset 8192 nr 106496 ram 262144 > [17608.283866] item 38 key (262 108 114688) itemoff 13850 itemsize 53 > [17608.285727] extent data disk bytenr 14200832 nr 4096 > [17608.287264] extent data offset 0 nr 4096 ram 4096 > [17608.288719] item 39 key (262 108 118784) itemoff 13797 itemsize 53 > [17608.290696] extent data disk bytenr 0 nr 0 > [17608.292237] extent data offset 0 nr 49152 ram 49152 > [17608.293667] item 40 key (262 108 167936) itemoff 13744 itemsize 53 > [17608.295436] extent data disk bytenr 14209024 nr 4096 > [17608.297051] extent data offset 0 nr 4096 ram 4096 > [17608.298583] item 41 key (262 108 172032) itemoff 13691 itemsize 53 > [17608.300573] extent data disk bytenr 13631488 nr 262144 > [17608.302323] extent data offset 172032 nr 8192 ram 262144 > [17608.304112] item 42 key (263 1 0) itemoff 13531 itemsize 160 > [17608.305810] inode generation 6 size 262144 mode 100600 > [17608.307444] item 43 key (263 12 256) itemoff 13512 itemsize 19 > [17608.309108] item 44 key (263 108 0) itemoff 13459 itemsize 53 > [17608.310760] extent data disk bytenr 14266368 nr 4096 > [17608.312269] extent data offset 0 nr 4096 ram 4096 > [17608.313883] item 45 key (263 108 4096) itemoff 13406 itemsize 53 > [17608.315659] extent data disk bytenr 13631488 nr 262144 > [17608.317133] extent data offset 0 nr 4096 ram 262144 > [17608.318691] item 46 key (263 108 8192) itemoff 13353 itemsize 53 > [17608.320417] extent data disk bytenr 13631488 nr 262144 > [17608.321851] extent data offset 8192 nr 81920 ram 262144 > [17608.323351] item 47 key (263 108 90112) itemoff 13300 itemsize 53 > [17608.325222] extent data disk bytenr 14319616 nr 4096 > [17608.326968] extent data offset 0 nr 4096 ram 4096 > [17608.328583] item 48 key (263 108 94208) itemoff 13247 itemsize 53 > [17608.330364] extent data disk bytenr 0 nr 0 > [17608.331708] extent data offset 0 nr 45056 ram 45056 > [17608.333200] item 49 key (263 108 139264) itemoff 13194 itemsize 53 > [17608.334979] extent data disk bytenr 14323712 nr 4096 > [17608.336570] extent data offset 0 nr 4096 ram 4096 > [17608.338023] item 50 key (263 108 143360) itemoff 13141 itemsize 53 > [17608.340091] extent data disk bytenr 13631488 nr 262144 > [17608.341746] extent data offset 143360 nr 8192 ram 262144 > [17608.343400] item 51 key (263 108 151552) itemoff 13088 itemsize 53 > [17608.345228] extent data disk bytenr 14327808 nr 61440 > [17608.346924] extent data offset 0 nr 61440 ram 61440 > [17608.348626] item 52 key (263 108 212992) itemoff 13035 itemsize 53 > [17608.350371] extent data disk bytenr 14270464 nr 49152 > [17608.351985] extent data offset 0 nr 49152 ram 49152 > [17608.353542] item 53 key (264 1 0) itemoff 12875 itemsize 160 > [17608.355125] inode generation 6 size 247974 mode 100600 > [17608.356813] item 54 key (264 12 256) itemoff 12856 itemsize 19 > [17608.358539] item 55 key (264 108 0) itemoff 12803 itemsize 53 > [17608.360340] extent data disk bytenr 14471168 nr 4096 > [17608.361935] extent data offset 0 nr 4096 ram 4096 > [17608.363426] item 56 key (264 108 4096) itemoff 12750 itemsize 53 > [17608.365224] extent data disk bytenr 13631488 nr 262144 > [17608.366836] extent data offset 0 nr 4096 ram 262144 > [17608.368439] item 57 key (264 108 8192) itemoff 12697 itemsize 53 > [17608.370226] extent data disk bytenr 13631488 nr 262144 > [17608.371714] extent data offset 8192 nr 8192 ram 262144 > [17608.373157] item 58 key (264 108 16384) itemoff 12644 itemsize 53 > [17608.374820] extent data disk bytenr 14483456 nr 4096 > [17608.376495] extent data offset 0 nr 4096 ram 4096 > [17608.378014] item 59 key (264 108 20480) itemoff 12591 itemsize 53 > [17608.379882] extent data disk bytenr 0 nr 0 > [17608.381425] extent data offset 0 nr 20480 ram 20480 > [17608.383188] item 60 key (264 108 40960) itemoff 12538 itemsize 53 > [17608.385037] extent data disk bytenr 14487552 nr 4096 > [17608.386644] extent data offset 0 nr 4096 ram 4096 > [17608.388191] item 61 key (264 108 45056) itemoff 12485 itemsize 53 > [17608.390035] extent data disk bytenr 13631488 nr 262144 > [17608.391634] extent data offset 45056 nr 20480 ram 262144 > [17608.393440] item 62 key (264 108 65536) itemoff 12432 itemsize 53 > [17608.395464] extent data disk bytenr 14475264 nr 4096 > [17608.397179] extent data offset 0 nr 4096 ram 4096 > [17608.398675] item 63 key (264 108 69632) itemoff 12379 itemsize 53 > [17608.400412] extent data disk bytenr 0 nr 0 > [17608.401843] extent data offset 0 nr 28672 ram 49152 > [17608.403409] item 64 key (264 108 98304) itemoff 12326 itemsize 53 > [17608.405389] extent data disk bytenr 14491648 nr 20480 > [17608.407111] extent data offset 0 nr 8192 ram 20480 > [17608.408795] item 65 key (264 108 106496) itemoff 12273 itemsize 53 > [17608.410757] extent data disk bytenr 14561280 nr 53248 > [17608.412483] extent data offset 0 nr 53248 ram 53248 > [17608.414166] item 66 key (264 108 159744) itemoff 12220 itemsize 53 > [17608.416164] extent data disk bytenr 13631488 nr 262144 > [17608.417897] extent data offset 159744 nr 16384 ram 262144 > [17608.419677] item 67 key (264 108 176128) itemoff 12167 itemsize 53 > [17608.421598] extent data disk bytenr 13631488 nr 262144 > [17608.423313] extent data offset 237568 nr 4096 ram 262144 > [17608.425051] item 68 key (264 108 180224) itemoff 12114 itemsize 53 > [17608.427009] extent data disk bytenr 13631488 nr 262144 > [17608.428787] extent data offset 180224 nr 45056 ram 262144 > [17608.430588] item 69 key (264 108 225280) itemoff 12061 itemsize 53 > [17608.432457] extent data disk bytenr 14614528 nr 16384 > [17608.434122] extent data offset 0 nr 16384 ram 16384 > [17608.435663] item 70 key (264 108 241664) itemoff 12008 itemsize 53 > [17608.437520] extent data disk bytenr 13631488 nr 262144 > [17608.439160] extent data offset 241664 nr 8192 ram 262144 > [17608.440869] item 71 key (265 1 0) itemoff 11848 itemsize 160 > [17608.442586] inode generation 6 size 193781 mode 100600 > [17608.444197] item 72 key (265 12 256) itemoff 11829 itemsize 19 > [17608.446043] item 73 key (265 108 0) itemoff 11776 itemsize 53 > [17608.447726] extent data disk bytenr 14524416 nr 4096 > [17608.449507] extent data offset 0 nr 4096 ram 4096 > [17608.451142] item 74 key (265 108 4096) itemoff 11723 itemsize 53 > [17608.452883] extent data disk bytenr 13631488 nr 262144 > [17608.454517] extent data offset 0 nr 4096 ram 262144 > [17608.456136] item 75 key (265 108 8192) itemoff 11670 itemsize 53 > [17608.458065] extent data disk bytenr 13631488 nr 262144 > [17608.459732] extent data offset 8192 nr 110592 ram 262144 > [17608.461260] item 76 key (265 108 118784) itemoff 11617 itemsize 53 > [17608.462918] extent data disk bytenr 14528512 nr 28672 > [17608.464562] extent data offset 0 nr 28672 ram 28672 > [17608.466204] item 77 key (265 108 147456) itemoff 11564 itemsize 53 > [17608.468161] extent data disk bytenr 0 nr 0 > [17608.469631] extent data offset 8192 nr 4096 ram 12288 > [17608.471331] item 78 key (265 108 151552) itemoff 11511 itemsize 53 > [17608.473363] extent data disk bytenr 14557184 nr 4096 > [17608.474920] extent data offset 0 nr 4096 ram 4096 > [17608.476499] item 79 key (265 108 155648) itemoff 11458 itemsize 53 > [17608.478306] extent data disk bytenr 13631488 nr 262144 > [17608.479921] extent data offset 155648 nr 40960 ram 262144 > [17608.481652] item 80 key (266 1 0) itemoff 11298 itemsize 160 > [17608.483268] inode generation 6 size 262144 mode 100600 > [17608.484849] item 81 key (266 12 256) itemoff 11279 itemsize 19 > [17608.486489] item 82 key (266 108 0) itemoff 11226 itemsize 53 > [17608.488298] extent data disk bytenr 14712832 nr 4096 > [17608.489866] extent data offset 0 nr 4096 ram 4096 > [17608.491399] item 83 key (266 108 4096) itemoff 11173 itemsize 53 > [17608.493255] extent data disk bytenr 13631488 nr 262144 > [17608.494898] extent data offset 0 nr 4096 ram 262144 > [17608.496504] item 84 key (266 108 8192) itemoff 11120 itemsize 53 > [17608.498434] extent data disk bytenr 13631488 nr 262144 > [17608.500033] extent data offset 8192 nr 73728 ram 262144 > [17608.501619] item 85 key (266 108 81920) itemoff 11067 itemsize 53 > [17608.503455] extent data disk bytenr 14741504 nr 4096 > [17608.505086] extent data offset 0 nr 4096 ram 4096 > [17608.506648] item 86 key (266 108 86016) itemoff 11014 itemsize 53 > [17608.508346] extent data disk bytenr 13631488 nr 262144 > [17608.509862] extent data offset 86016 nr 28672 ram 262144 > [17608.511645] item 87 key (266 108 114688) itemoff 10961 itemsize 53 > [17608.513620] extent data disk bytenr 13631488 nr 262144 > [17608.515403] extent data offset 36864 nr 28672 ram 262144 > [17608.517234] item 88 key (266 108 143360) itemoff 10908 itemsize 53 > [17608.519248] extent data disk bytenr 13631488 nr 262144 > [17608.520976] extent data offset 143360 nr 16384 ram 262144 > [17608.522635] item 89 key (266 108 159744) itemoff 10855 itemsize 53 > [17608.524583] extent data disk bytenr 14745600 nr 12288 > [17608.526254] extent data offset 0 nr 12288 ram 12288 > [17608.527858] item 90 key (266 108 172032) itemoff 10802 itemsize 53 > [17608.538634] extent data disk bytenr 13631488 nr 262144 > [17608.540392] extent data offset 172032 nr 36864 ram 262144 > [17608.542156] item 91 key (266 108 208896) itemoff 10749 itemsize 53 > [17608.544104] extent data disk bytenr 14716928 nr 4096 > [17608.545664] extent data offset 0 nr 4096 ram 4096 > [17608.547207] item 92 key (266 108 212992) itemoff 10696 itemsize 53 > [17608.549038] extent data disk bytenr 0 nr 0 > [17608.550440] extent data offset 0 nr 32768 ram 32768 > [17608.552056] item 93 key (266 108 245760) itemoff 10643 itemsize 53 > [17608.553997] extent data disk bytenr 14721024 nr 4096 > [17608.555578] extent data offset 0 nr 4096 ram 4096 > [17608.557113] item 94 key (266 108 249856) itemoff 10590 itemsize 53 > [17608.558861] extent data disk bytenr 14688256 nr 24576 > [17608.560439] extent data offset 12288 nr 12288 ram 24576 > [17608.562137] item 95 key (267 1 0) itemoff 10430 itemsize 160 > [17608.563756] inode generation 6 size 262144 mode 100600 > [17608.565261] item 96 key (267 12 256) itemoff 10411 itemsize 19 > [17608.566912] item 97 key (267 108 0) itemoff 10358 itemsize 53 > [17608.568715] extent data disk bytenr 14737408 nr 4096 > [17608.570283] extent data offset 0 nr 4096 ram 4096 > [17608.571810] item 98 key (267 108 4096) itemoff 10305 itemsize 53 > [17608.573502] extent data disk bytenr 13631488 nr 262144 > [17608.575033] extent data offset 0 nr 4096 ram 262144 > [17608.576507] item 99 key (267 108 8192) itemoff 10252 itemsize 53 > [17608.578416] extent data disk bytenr 13631488 nr 262144 > [17608.581054] extent data offset 8192 nr 167936 ram 262144 > [17608.583613] item 100 key (267 108 176128) itemoff 10199 itemsize 53 > [17608.585846] extent data disk bytenr 13631488 nr 262144 > [17608.587883] extent data offset 188416 nr 4096 ram 262144 > [17608.590034] item 101 key (267 108 180224) itemoff 10146 itemsize 53 > [17608.592397] extent data disk bytenr 13631488 nr 262144 > [17608.594415] extent data offset 180224 nr 81920 ram 262144 > [17608.595941] item 102 key (18446744073709551606 128 13631488) itemoff = 10142 itemsize 4 > [17608.598465] item 103 key (18446744073709551606 128 13635584) itemoff = 10082 itemsize 60 > [17608.601262] item 104 key (18446744073709551606 128 13697024) itemoff = 9974 itemsize 108 > [17608.604090] item 105 key (18446744073709551606 128 13717504) itemoff = 9946 itemsize 28 > [17608.606573] item 106 key (18446744073709551606 128 13774848) itemoff = 9930 itemsize 16 > [17608.609125] item 107 key (18446744073709551606 128 13803520) itemoff = 9842 itemsize 88 > [17608.611709] item 108 key (18446744073709551606 128 13905920) itemoff = 9786 itemsize 56 > [17608.614269] item 109 key (18446744073709551606 128 13975552) itemoff = 9782 itemsize 4 > [17608.616992] item 110 key (18446744073709551606 128 14123008) itemoff = 9778 itemsize 4 > [17608.619523] item 111 key (18446744073709551606 128 14135296) itemoff = 9710 itemsize 68 > [17608.622144] item 112 key (18446744073709551606 128 14209024) itemoff = 9706 itemsize 4 > [17608.624841] item 113 key (18446744073709551606 128 14217216) itemoff = 9538 itemsize 168 > [17608.627409] item 114 key (18446744073709551606 128 14471168) itemoff = 9530 itemsize 8 > [17608.630034] item 115 key (18446744073709551606 128 14479360) itemoff = 9510 itemsize 20 > [17608.632681] item 116 key (18446744073709551606 128 14499840) itemoff = 9498 itemsize 12 > [17608.635448] item 117 key (18446744073709551606 128 14524416) itemoff = 9394 itemsize 104 > [17608.638122] item 118 key (18446744073709551606 128 14700544) itemoff = 9382 itemsize 12 > [17608.640633] item 119 key (18446744073709551606 128 14712832) itemoff = 9370 itemsize 12 > [17608.643227] item 120 key (18446744073709551606 128 14737408) itemoff = 9350 itemsize 20 > [17608.645834] BTRFS error (device dm-0): block=3D30949376 write time tre= e block corruption detected > [17608.648714] ------------[ cut here ]------------ > [17608.650272] WARNING: CPU: 2 PID: 27162 at fs/btrfs/disk-io.c:537 btree= _csum_one_bio+0x297/0x2a0 [btrfs] > [17608.652972] Modules linked in: dm_snapshot dm_thin_pool dm_persistent_= data dm_bio_prison dm_bufio dm_log_writes dm_flakey dm_mod dax btrfs blake2= b_generic libcrc32c crc32c_intel xor zstd_decompress zstd_compress xxhash l= zo_compress lzo_decompress raid6_pq loop [last unloaded: scsi_debug] > [17608.660683] CPU: 2 PID: 27162 Comm: fsx Tainted: G L 5.= 7.0-rc3-default+ #1094 > [17608.663520] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIO= S rel-1.12.0-59-gc9ba527-rebuilt.opensuse.org 04/01/2014 > [17608.667102] RIP: 0010:btree_csum_one_bio+0x297/0x2a0 [btrfs] > [17608.668919] Code: bc fd ff ff e8 aa e7 f0 c2 31 f6 48 89 3c 24 e8 ff 7= b ff ff 48 8b 3c 24 48 c7 c6 78 75 25 c0 48 8b 17 4c 89 e7 e8 84 bc 0b 00 <= 0f> 0b e9 8f fd ff ff 66 90 0f 1f 44 00 00 48 89 f7 e9 53 fd ff ff > [17608.674610] RSP: 0018:ffffafbb81e978b8 EFLAGS: 00010292 > [17608.676299] RAX: 0000000000000000 RBX: ffff94287f810f00 RCX: 000000000= 0000001 > [17608.678260] RDX: 0000000000000000 RSI: ffffffff83109fc2 RDI: ffffffff8= 310a096 > [17608.680484] RBP: 0000000000000001 R08: 0000000000000000 R09: 000000000= 0000000 > [17608.682645] R10: 0000000000000000 R11: 0000000000008ca0 R12: ffff94285= f298000 > [17608.684681] R13: ffff94274100bd30 R14: 0000000000000000 R15: 00000000f= fffff8b > [17608.686659] FS: 00007f3479617b80(0000) GS:ffff94287ba00000(0000) knlG= S:0000000000000000 > [17608.689240] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [17608.691150] CR2: 0000000000466000 CR3: 000000010227f001 CR4: 000000000= 0160ee0 > [17608.693354] Call Trace: > [17608.694341] btree_submit_bio_hook+0x74/0xc0 [btrfs] > [17608.696162] submit_one_bio+0x2b/0x40 [btrfs] > [17608.698391] btree_write_cache_pages+0x373/0x440 [btrfs] > [17608.700085] ? lock_acquire+0xa3/0x400 > [17608.701257] ? __filemap_fdatawrite_range+0xad/0x110 > [17608.702736] do_writepages+0x40/0xe0 > [17608.703953] ? do_raw_spin_unlock+0x4b/0xc0 > [17608.705290] ? _raw_spin_unlock+0x1f/0x30 > [17608.706571] ? wbc_attach_and_unlock_inode+0x194/0x2a0 > [17608.708167] __filemap_fdatawrite_range+0xce/0x110 > [17608.709679] btrfs_write_marked_extents+0x68/0x160 [btrfs] > [17608.711384] btrfs_sync_log+0x1a8/0xd40 [btrfs] > [17608.712892] ? btrfs_log_inode+0x370/0xe20 [btrfs] > [17608.714459] ? lock_acquire+0xa3/0x400 > [17608.715803] ? lockref_put_or_lock+0x9/0x30 > [17608.717115] ? dput+0x20/0x490 > [17608.718172] ? dput+0x20/0x490 > [17608.719271] ? do_raw_spin_unlock+0x4b/0xc0 > [17608.720639] ? _raw_spin_unlock+0x1f/0x30 > [17608.722002] btrfs_sync_file+0x335/0x490 [btrfs] > [17608.723610] __x64_sys_msync+0x19e/0x200 > [17608.724924] do_syscall_64+0x50/0x210 > [17608.726143] entry_SYSCALL_64_after_hwframe+0x49/0xb3 > [17608.727719] RIP: 0033:0x7f34797f2743 > [17608.729030] Code: 64 89 02 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 0= 0 00 00 00 66 90 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 1a 00 00 00 0f 05 <= 48> 3d 00 f0 ff ff 77 55 c3 0f 1f 40 00 48 83 ec 28 89 54 24 1c 48 > [17608.734572] RSP: 002b:00007ffe84f11858 EFLAGS: 00000246 ORIG_RAX: 0000= 00000000001a > [17608.736913] RAX: ffffffffffffffda RBX: 00000000000008c8 RCX: 00007f347= 97f2743 > [17608.738902] RDX: 0000000000000004 RSI: 000000000000293f RDI: 00007f347= 9814000 > [17608.740949] RBP: 00000000000278c8 R08: 000000000000001f R09: 00007f347= 9814900 > [17608.742896] R10: fffffffffffffd0c R11: 0000000000000246 R12: 000000000= 0002077 > [17608.744810] R13: 000000000000293f R14: 00007f3479814000 R15: 000000000= 0000000 > [17608.746764] irq event stamp: 0 > [17608.747948] hardirqs last enabled at (0): [<0000000000000000>] 0x0 > [17608.749754] hardirqs last disabled at (0): [] copy_p= rocess+0x67b/0x1b00 > [17608.752428] softirqs last enabled at (0): [] copy_p= rocess+0x67b/0x1b00 > [17608.754935] softirqs last disabled at (0): [<0000000000000000>] 0x0 > [17608.756871] ---[ end trace ddba49bd36651725 ]--- > [17608.758590] BTRFS: error (device dm-0) in btrfs_sync_log:3089: errno= =3D-5 IO failure This is due to concurrent fsyncs against files with shared extents. Not a new issue, but it's now easier to detect since I added the check in tree-checker for csum items with overlapping ranges. Before that it just happened silently. Besides the transaction abort, due to the tree-checker failure detection, it can also cause a more annoying BUG_ON() during fsync: [ 3566.138145] BTRFS critical (device dm-0): slot 81 key (18446744073709551606 128 13635584) new key (18446744073709551606 128 13635584) [ 3566.140427] BTRFS info (device dm-0): leaf 30949376 gen 7 total ptrs 98 free space 8527 owner 18446744073709551610 [ 3566.142673] BTRFS info (device dm-0): refs 4 lock (w:1 r:0 bw:0 br:0 sw:1 sr:0) lock_owner 13473 current 13473 [ 3566.144562] item 0 key (257 1 0) itemoff 16123 itemsize 160 [ 3566.145656] inode generation 7 size 262144 mode 100600 .... [ 3566.336479] ------------[ cut here ]------------ [ 3566.337054] kernel BUG at fs/btrfs/ctree.c:3153! [ 3566.337654] invalid opcode: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC PTI [ 3566.338449] CPU: 1 PID: 13473 Comm: fsx Not tainted 5.6.0-rc7-btrfs-next-58 #1 [ 3566.339359] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 3566.340820] RIP: 0010:btrfs_set_item_key_safe+0x1ea/0x270 [btrfs] [ 3566.341570] Code: 0f b6 47 08 41 ff 77 09 48 89 e9 89 da 48 c7 c6 d8 9d 8b c0 50 41 ff 37 48 8b 7c 24 28 e8 41 d9 0e 00 4c 89 e7 e8 76 53 01 00 <0f> 0b 48 c7 c7 e0 20 92 c0 e8 78 2a 2a f6 41 0f b6 47 08 41 ff 77 [ 3566.343869] RSP: 0018:ffff95e3889179d0 EFLAGS: 00010282 [ 3566.344513] RAX: 0000000000000000 RBX: 0000000000000051 RCX: 00000000000= 00000 [ 3566.345389] RDX: 0000000000000000 RSI: ffffffffb7763988 RDI: 00000000000= 00001 [ 3566.346265] RBP: fffffffffffffff6 R08: 0000000000000000 R09: 00000000000= 00001 [ 3566.347162] R10: 00000000000009ef R11: 0000000000000000 R12: ffff8912a8b= a5a08 [ 3566.348037] R13: ffff95e388917a06 R14: ffff89138dcf68c8 R15: ffff95e3889= 17ace [ 3566.348911] FS: 00007fe587084e80(0000) GS:ffff8913baa00000(0000) knlGS:0000000000000000 [ 3566.349902] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 3566.350636] CR2: 00007fe587091000 CR3: 0000000126dac005 CR4: 00000000003= 606e0 [ 3566.351514] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 00000000000= 00000 [ 3566.352387] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 00000000000= 00400 [ 3566.353420] Call Trace: [ 3566.353807] btrfs_del_csums+0x2f4/0x540 [btrfs] [ 3566.354512] copy_items+0x4b5/0x560 [btrfs] [ 3566.355151] btrfs_log_inode+0x910/0xf90 [btrfs] [ 3566.355853] btrfs_log_inode_parent+0x2a0/0xe40 [btrfs] [ 3566.356639] ? dget_parent+0x5/0x370 [ 3566.357183] btrfs_log_dentry_safe+0x4a/0x70 [btrfs] [ 3566.357925] btrfs_sync_file+0x42b/0x4d0 [btrfs] [ 3566.358629] __x64_sys_msync+0x199/0x200 [ 3566.359214] do_syscall_64+0x5c/0x280 [ 3566.359764] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 3566.360504] RIP: 0033:0x7fe586c65760 I've had this on my todo list for a while and a simple idea about how to fix it but haven't tried it yet. I'll see if I try it soon. --=20 Filipe David Manana, =E2=80=9CWhether you think you can, or you think you can't =E2=80=94 you're= right.=E2=80=9D