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Red Hat Bugzilla – Attachment 149859 Details for
Bug 213289
[DLM] gfs umount hung, message size too big
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Breakdown of midcomm's buffer
badlkbmsgs.txt (text/plain), 18.96 KB, created by
Robert Peterson
on 2007-03-12 20:21:29 UTC
(
hide
)
Description:
Breakdown of midcomm's buffer
Filename:
MIME Type:
Creator:
Robert Peterson
Created:
2007-03-12 20:21:29 UTC
Size:
18.96 KB
patch
obsolete
>dlm: bobs_gfs: remove fr 2 none >dlm: message size 8224 (bob: 0x2020) from 2 too big, buf len 5080 (bob: 0x13d8) >c9c70000 00000000 00000000 00000000 8DBED3CA [................] >c9c70010 00000000 00000000 00000000 00000000 [................] >c9c70020 00000000 00000000 00000000 00000000 [................] >c9c70030 00000000 00000000 00000000 00000000 [................] >c9c70040 20202020 20202035 20202020 20202020 [ 5 ] >c9c70050 20203335 65303464 ># l=x70 /01 00000300 01000800 [ 35e04d........] >c9c70060 02000000 70000100 0C000000 00000000 [....p...........] >c9c70070 00000000 00000000 00000000 00000000 [................] >c9c70080 00000000 00000000 00000000 00000000 [................] >c9c70090 00000000 9FEAC5A8 00000000 00000000 [................] >c9c700a0 00000000 00000000 00000000 00000000 [................] >c9c700b0 20202020 20202035 20202020 20202020 [ 5 ] >c9c700c0 20203336 65313531 ># l=x70 /01 00000300 01000800 [ 36e151........] >c9c700d0 02000000 70000100 0C000000 00000000 [....p...........] >c9c700e0 00000000 00000000 00000000 00000000 [................] >c9c700f0 00000000 00000000 00000000 00000000 [................] >c9c70100 00000000 A04BF8A2 00000000 00000000 [.....K..........] >c9c70110 00000000 00000000 00000000 00000000 [................] >c9c70120 20202020 20202035 20202020 20202020 [ 5 ] >c9c70130 20203336 65313964 ># l=x70 /01 00000300 01000800 [ 36e19d........] >c9c70140 02000000 70000100 0C000000 00000000 [....p...........] >c9c70150 00000000 00000000 00000000 00000000 [................] >c9c70160 00000000 00000000 00000000 00000000 [................] >c9c70170 00000000 A084E0E7 00000000 00000000 [................] >c9c70180 00000000 00000000 00000000 00000000 [................] >c9c70190 20202020 20202035 20202020 20202020 [ 5 ] >c9c701a0 20203338 64646463 ># l=x70 /01 00000300 01000800 [ 38dddc........] >c9c701b0 02000000 70000100 0C000000 00000000 [....p...........] >c9c701c0 00000000 00000000 00000000 00000000 [................] >c9c701d0 00000000 00000000 00000000 00000000 [................] >c9c701e0 00000000 A1C20371 00000000 00000000 [.......q........] >c9c701f0 00000000 00000000 00000000 00000000 [................] >c9c70200 20202020 20202035 20202020 20202020 [ 5 ] >c9c70210 20203338 64653035 ># l=x70 /01 00000300 01000800 [ 38de05........] >c9c70220 02000000 70000100 0C000000 00000000 [....p...........] >c9c70230 00000000 00000000 00000000 00000000 [................] >c9c70240 00000000 00000000 00000000 00000000 [................] >c9c70250 00000000 A1F0371F 00000000 00000000 [......7.........] >c9c70260 00000000 00000000 00000000 00000000 [................] >c9c70270 20202020 20202035 20202020 20202020 [ 5 ] >c9c70280 20203337 64663165 ># l=x70 /01 00000300 01000800 [ 37df1e........] >c9c70290 02000000 70000100 0C000000 00000000 [....p...........] >c9c702a0 00000000 00000000 00000000 00000000 [................] >c9c702b0 00000000 00000000 00000000 00000000 [................] >c9c702c0 00000000 A24353EA 00000000 00000000 [.....CS.........] >c9c702d0 00000000 00000000 00000000 00000000 [................] >c9c702e0 20202020 20202035 20202020 20202020 [ 5 ] >c9c702f0 20203336 65316134 ># l=x70 /01 00000300 01000800 [ 36e1a4........] >c9c70300 02000000 70000100 0C000000 00000000 [....p...........] >c9c70310 00000000 00000000 00000000 00000000 [................] >c9c70320 00000000 00000000 00000000 00000000 [................] >c9c70330 00000000 A38DC1EB 00000000 00000000 [................] >c9c70340 00000000 00000000 00000000 00000000 [................] >c9c70350 20202020 20202035 20202020 20202020 [ 5 ] >c9c70360 20203338 64653461 ># l=x70 /01 00000300 01000800 [ 38de4a........] >c9c70370 02000000 70000100 0C000000 00000000 [....p...........] >c9c70380 00000000 00000000 00000000 00000000 [................] >c9c70390 00000000 00000000 00000000 00000000 [................] >c9c703a0 00000000 A495AB0B 00000000 00000000 [................] >c9c703b0 00000000 00000000 00000000 00000000 [................] >c9c703c0 20202020 20202035 20202020 20202020 [ 5 ] >c9c703d0 20203363 64616262 ># l=x70 /01 00000300 01000800 [ 3cdabb........] >c9c703e0 02000000 70000100 0C000000 00000000 [....p...........] >c9c703f0 00000000 00000000 00000000 00000000 [................] >c9c70400 00000000 00000000 00000000 00000000 [................] >c9c70410 00000000 A4118BDF 00000000 00000000 [................] >c9c70420 00000000 00000000 00000000 00000000 [................] >c9c70430 20202020 20202035 20202020 20202020 [ 5 ] >c9c70440 20203335 65313238 ># l=x70 /01 00000300 01000800 [ 35e128........] >c9c70450 02000000 70000100 0C000000 00000000 [....p...........] >c9c70460 00000000 00000000 00000000 00000000 [................] >c9c70470 00000000 00000000 00000000 00000000 [................] >c9c70480 00000000 00000000 20202020 20202035 [........ 5] >c9c70490 20202020 20202020 20203334 65303362 [ 34e03b] > > > >(suspected buffer wrap) > > > ># l=0x70 /01 m_type=0x0000000c=DLM_MSG_REMOVE >c9c704a0 00000300 01000800 02000000 70000100 [............p...] >c9c704b0 0C000000 00000000 00000000 00000000 [................] >c9c704c0 00000000 00000000 00000000 00000000 [................] >c9c704d0 00000000 00000000 00000000 92A38654 [...............T] >c9c704e0 00000000 00000000 00000000 00000000 [................] >c9c704f0 00000000 00000000 20202020 20202035 [........ 5] >c9c70500 20202020 20202020 20203430 64386262 [ 40d8bb] ># l=0x70 /01 m_type=0x0000000c=DLM_MSG_REMOVE >c9c70510 00000300 01000800 02000000 70000100 [............p...] >c9c70520 0C000000 00000000 00000000 00000000 [................] >c9c70530 00000000 00000000 00000000 00000000 [................] >c9c70540 00000000 00000000 00000000 927A50A8 [.............zP.] >c9c70550 00000000 00000000 00000000 00000000 [................] >c9c70560 00000000 00000000 20202020 20202035 [........ 5] >c9c70570 20202020 20202020 20203338 64646337 [ 38ddc7] ># l=0x70 /01 m_type=0x0000000c=DLM_MSG_REMOVE >c9c70580 00000300 01000800 02000000 70000100 [............p...] >c9c70590 0C000000 00000000 00000000 00000000 [................] >c9c705a0 00000000 00000000 00000000 00000000 [................] >c9c705b0 00000000 00000000 00000000 93C6AEF5 [................] >c9c705c0 00000000 00000000 00000000 00000000 [................] >c9c705d0 00000000 00000000 20202020 20202035 [........ 5] >c9c705e0 20202020 20202020 20203363 64633630 [ 3cdc60] ># l=0x70 /01 m_type=0x0000000c=DLM_MSG_REMOVE >c9c705f0 00000300 01000800 02000000 70000100 [............p...] >c9c70600 0C000000 00000000 00000000 00000000 [................] >c9c70610 00000000 00000000 00000000 00000000 [................] >c9c70620 00000000 00000000 00000000 95BB7F61 [...............a] >c9c70630 00000000 00000000 00000000 00000000 [................] >c9c70640 00000000 00000000 20202020 20202035 [........ 5] >c9c70650 20202020 20202020 20203436 64343930 [ 46d490] ># l=0x70 /01 m_type=0x0000000c=DLM_MSG_REMOVE >c9c70660 00000300 01000800 02000000 70000100 [............p...] >c9c70670 0C000000 00000000 00000000 00000000 [................] >c9c70680 00000000 00000000 00000000 00000000 [................] >c9c70690 00000000 00000000 00000000 95E68F06 [................] >c9c706a0 00000000 00000000 00000000 00000000 [................] >c9c706b0 00000000 00000000 20202020 20202035 [........ 5] >c9c706c0 20202020 20202020 20203333 66363731 [ 33f671] ># l=0x70 /01 m_type=0x0000000c=DLM_MSG_REMOVE >c9c706d0 00000300 01000800 02000000 70000100 [............p...] >c9c706e0 0C000000 00000000 00000000 00000000 [................] >c9c706f0 00000000 00000000 00000000 00000000 [................] >c9c70700 00000000 00000000 00000000 96603BC0 [.............`;.] >c9c70710 00000000 00000000 00000000 00000000 [................] >c9c70720 00000000 00000000 20202020 20202035 [........ 5] >c9c70730 20202020 20202020 20203431 64373933 [ 41d793] ># l=0x70 /01 m_type=0x0000000c=DLM_MSG_REMOVE >c9c70740 00000300 01000800 02000000 70000100 [............p...] >c9c70750 0C000000 00000000 00000000 00000000 [................] >c9c70760 00000000 00000000 00000000 00000000 [................] >c9c70770 00000000 00000000 00000000 96A27340 [..............s@] >c9c70780 00000000 00000000 00000000 00000000 [................] >c9c70790 00000000 00000000 20202020 20202035 [........ 5] >c9c707a0 20202020 20202020 20203335 65313562 [ 35e15b] ># l=0x70 /01 m_type=0x0000000c=DLM_MSG_REMOVE >c9c707b0 00000300 01000800 02000000 70000100 [............p...] >c9c707c0 0C000000 00000000 00000000 00000000 [................] >c9c707d0 00000000 00000000 00000000 00000000 [................] >c9c707e0 00000000 00000000 00000000 96C100E3 [................] >c9c707f0 00000000 00000000 00000000 00000000 [................] >c9c70800 00000000 00000000 20202020 20202035 [........ 5] >c9c70810 20202020 20202020 20203361 64633761 [ 3adc7a] ># l=0x70 /01 m_type=0x0000000c=DLM_MSG_REMOVE >c9c70820 00000300 01000800 02000000 70000100 [............p...] >c9c70830 0C000000 00000000 00000000 00000000 [................] >c9c70840 00000000 00000000 00000000 00000000 [................] >c9c70850 00000000 00000000 00000000 964530C8 [.............E0.] >c9c70860 00000000 00000000 00000000 00000000 [................] >c9c70870 00000000 00000000 20202020 20202035 [........ 5] >c9c70880 20202020 20202020 20203339 64656665 [ 39defe] ># l=0x70 /01 m_type=0x0000000c=DLM_MSG_REMOVE >c9c70890 00000300 01000800 02000000 70000100 [............p...] >c9c708a0 0C000000 00000000 00000000 00000000 [................] >c9c708b0 00000000 00000000 00000000 00000000 [................] >c9c708c0 00000000 00000000 00000000 97155012 [..............P.] >c9c708d0 00000000 00000000 00000000 00000000 [................] >c9c708e0 00000000 00000000 20202020 20202035 [........ 5] >c9c708f0 20202020 20202020 20203338 64643839 [ 38dd89] ># l=0x70 /01 m_type=0x0000000c=DLM_MSG_REMOVE >c9c70900 00000300 01000800 02000000 70000100 [............p...] >c9c70910 0C000000 00000000 00000000 00000000 [................] >c9c70920 00000000 00000000 00000000 00000000 [................] >c9c70930 00000000 00000000 00000000 97942C06 [..............,.] >c9c70940 00000000 00000000 00000000 00000000 [................] >c9c70950 00000000 00000000 20202020 20202035 [........ 5] >c9c70960 20202020 20202020 20203335 65306135 [ 35e0a5] ># l=0x70 /01 m_type=0x0000000c=DLM_MSG_REMOVE >c9c70970 00000300 01000800 02000000 70000100 [............p...] >c9c70980 0C000000 00000000 00000000 00000000 [................] >c9c70990 00000000 00000000 00000000 00000000 [................] >c9c709a0 00000000 00000000 00000000 98E1D2F8 [................] >c9c709b0 00000000 00000000 00000000 00000000 [................] >c9c709c0 00000000 00000000 20202020 20202035 [........ 5] >c9c709d0 20202020 20202020 20203338 64653232 [ 38de22] ># l=0x70 /01 m_type=0x0000000c=DLM_MSG_REMOVE >c9c709e0 00000300 01000800 02000000 70000100 [............p...] >c9c709f0 0C000000 00000000 00000000 00000000 [................] >c9c70a00 00000000 00000000 00000000 00000000 [................] >c9c70a10 00000000 00000000 00000000 98159A04 [................] >c9c70a20 00000000 00000000 00000000 00000000 [................] >c9c70a30 00000000 00000000 20202020 20202035 [........ 5] >c9c70a40 20202020 20202020 20203431 64376337 [ 41d7c7] ># l=0x70 /01 m_type=0x0000000c=DLM_MSG_REMOVE >c9c70a50 00000300 01000800 02000000 70000100 [............p...] >c9c70a60 0C000000 00000000 00000000 00000000 [................] >c9c70a70 00000000 00000000 00000000 00000000 [................] >c9c70a80 00000000 00000000 00000000 985933EF [.............Y3.] >c9c70a90 00000000 00000000 00000000 00000000 [................] >c9c70aa0 00000000 00000000 20202020 20202035 [........ 5] >c9c70ab0 20202020 20202020 20203363 64623830 [ 3cdb80] ># l=0x70 /01 m_type=0x0000000c=DLM_MSG_REMOVE >c9c70ac0 00000300 01000800 02000000 70000100 [............p...] >c9c70ad0 0C000000 00000000 00000000 00000000 [................] >c9c70ae0 00000000 00000000 00000000 00000000 [................] >c9c70af0 00000000 00000000 00000000 9996B4FB [................] >c9c70b00 00000000 00000000 00000000 00000000 [................] >c9c70b10 00000000 00000000 20202020 20202035 [........ 5] >c9c70b20 20202020 20202020 20203337 64653533 [ 37de53] ># l=0x70 /01 m_type=0x0000000c=DLM_MSG_REMOVE >c9c70b30 00000300 01000800 02000000 70000100 [............p...] >c9c70b40 0C000000 00000000 00000000 00000000 [................] >c9c70b50 00000000 00000000 00000000 00000000 [................] >c9c70b60 00000000 00000000 00000000 996BE8D9 [.............k..] >c9c70b70 00000000 00000000 00000000 00000000 [................] >c9c70b80 00000000 00000000 20202020 20202035 [........ 5] >c9c70b90 20202020 20202020 20203337 65303362 [ 37e03b] ># l=0x70 /01 m_type=0x0000000c=DLM_MSG_REMOVE >c9c70ba0 00000300 01000800 02000000 70000100 [............p...] >c9c70bb0 0C000000 00000000 00000000 00000000 [................] >c9c70bc0 00000000 00000000 00000000 00000000 [................] >c9c70bd0 00000000 00000000 00000000 9BA9AEF8 [................] >c9c70be0 00000000 00000000 00000000 00000000 [................] >c9c70bf0 00000000 00000000 20202020 20202035 [........ 5] >c9c70c00 20202020 20202020 20203361 64626630 [ 3adbf0] ># l=0x70 /01 m_type=0x0000000c=DLM_MSG_REMOVE >c9c70c10 00000300 01000800 02000000 70000100 [............p...] >c9c70c20 0C000000 00000000 00000000 00000000 [................] >c9c70c30 00000000 00000000 00000000 00000000 [................] >c9c70c40 00000000 00000000 00000000 9BEAFCCE [................] >c9c70c50 00000000 00000000 00000000 00000000 [................] >c9c70c60 00000000 00000000 20202020 20202035 [........ 5] >c9c70c70 20202020 20202020 20203335 65313038 [ 35e108] ># l=0x70 /01 m_type=0x0000000c=DLM_MSG_REMOVE >c9c70c80 00000300 01000800 02000000 70000100 [............p...] >c9c70c90 0C000000 00000000 00000000 00000000 [................] >c9c70ca0 00000000 00000000 00000000 00000000 [................] >c9c70cb0 00000000 00000000 00000000 9DC9D316 [................] >c9c70cc0 00000000 00000000 00000000 00000000 [................] >c9c70cd0 00000000 00000000 20202020 20202035 [........ 5] >c9c70ce0 20202020 20202020 20203334 65303765 [ 34e07e] ># l=0x70 /01 m_type=0x0000000c=DLM_MSG_REMOVE >c9c70cf0 00000300 01000800 02000000 70000100 [............p...] >c9c70d00 0C000000 00000000 00000000 00000000 [................] >c9c70d10 00000000 00000000 00000000 00000000 [................] >c9c70d20 00000000 00000000 00000000 9E55C887 [.............U..] >c9c70d30 00000000 00000000 00000000 00000000 [................] >c9c70d40 00000000 00000000 20202020 20202035 [........ 5] >c9c70d50 20202020 20202020 20203334 65323335 [ 34e235] ># l=0x70 /01 m_type=0x0000000c=DLM_MSG_REMOVE >c9c70d60 00000300 01000800 02000000 70000100 [............p...] >c9c70d70 0C000000 00000000 00000000 00000000 [................] >c9c70d80 00000000 00000000 00000000 00000000 [................] >c9c70d90 00000000 00000000 00000000 9E2AC5E4 [.............*..] >c9c70da0 00000000 00000000 00000000 00000000 [................] >c9c70db0 00000000 00000000 20202020 20202035 [........ 5] >c9c70dc0 20202020 20202020 20203337 64663363 [ 37df3c] ># l=0x70 /01 m_type=0x0000000c=DLM_MSG_REMOVE >c9c70dd0 00000300 01000800 02000000 70000100 [............p...] >c9c70de0 0C000000 00000000 00000000 00000000 [................] >c9c70df0 00000000 00000000 00000000 00000000 [................] >c9c70e00 00000000 00000000 00000000 9EE66116 [..............a.] >c9c70e10 00000000 00000000 00000000 00000000 [................] >c9c70e20 00000000 00000000 20202020 20202035 [........ 5] >c9c70e30 20202020 20202020 20203334 65323232 [ 34e222] ># l=0x70 /01 m_type=0x0000000c=DLM_MSG_REMOVE >c9c70e40 00000300 01000800 02000000 70000100 [............p...] >c9c70e50 0C000000 00000000 00000000 00000000 [................] >c9c70e60 00000000 00000000 00000000 00000000 [................] >c9c70e70 00000000 00000000 00000000 9E1EB3D8 [................] >c9c70e80 00000000 00000000 00000000 00000000 [................] >c9c70e90 00000000 00000000 20202020 20202035 [........ 5] >c9c70ea0 20202020 20202020 20203363 64633538 [ 3cdc58] ># l=0x70 /01 m_type=0x0000000c=DLM_MSG_REMOVE >c9c70eb0 00000300 01000800 02000000 70000100 [............p...] >c9c70ec0 0C000000 00000000 00000000 00000000 [................] >c9c70ed0 00000000 00000000 00000000 00000000 [................] >c9c70ee0 00000000 00000000 00000000 9E269AFA [.............&..] >c9c70ef0 00000000 00000000 00000000 00000000 [................] >c9c70f00 00000000 00000000 20202020 20202035 [........ 5] >c9c70f10 20202020 20202020 20203333 66363566 [ 33f65f] ># l=0x70 /01 m_type=0x0000000c=DLM_MSG_REMOVE >c9c70f20 00000300 01000800 02000000 70000100 [............p...] >c9c70f30 0C000000 00000000 00000000 00000000 [................] >c9c70f40 00000000 00000000 00000000 00000000 [................] >c9c70f50 00000000 00000000 00000000 9F2D5DB3 [.............-].] >c9c70f60 00000000 00000000 00000000 00000000 [................] >c9c70f70 00000000 00000000 20202020 20202035 [........ 5] >c9c70f80 20202020 20202020 20203334 65313037 [ 34e107] ># l=0x70 /01 m_type=0x0000000c=DLM_MSG_REMOVE >c9c70f90 00000300 01000800 02000000 70000100 [............p...] >c9c70fa0 0C000000 00000000 00000000 00000000 [................] >c9c70fb0 00000000 00000000 00000000 00000000 [................] >c9c70fc0 00000000 00000000 00000000 9FC5570B [..............W.] > > >--------------------------------------------------------------- >Probable starting point: > > >c9c70fd0 00000300 01000800 02000000 70000100 [............p...] >c9c70fe0 0C000000 00000000 00000000 00000000 [................] >c9c70ff0 00000000 00000000 00000000 00000000 [................] >dlm: got connection from 2 > > >Since the invalid length reported is 8224, which is 0x2020, >the most logical conclusion, based on this buffer, is that the >midcomms was asked to start processing messages starting with >this last entry. If you take this buffer, add its length of >0x70 to the buffer, wrap it around, you'll get an "entry" >that has an invalid length of 0x2020. If you choose any of >the other messages as a starting point, you won't get message >corruption that corresponds to a length of 0x2020. >Here's the start of the buffer again: > >c9c70000 00000000 00000000 00000000 8DBED3CA [................] >c9c70010 00000000 00000000 00000000 00000000 [................] >c9c70020 00000000 00000000 00000000 00000000 [................] >c9c70030 00000000 00000000 00000000 00000000 [................] >c9c70040 20202020 20202035 20202020 20202020 [ 5 ] >c9c70050 20203335 65303464 ># l=x70 /01 00000300 01000800 [ 35e04d........] > >This looks like the buffer wrap added 8 extra bytes.
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bug 213289
: 149859 |
149917
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149929