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9.4.14

940014

05-12-2023

[LU-7055] osd_ost_fini calls sleeping function under rwlock https://jira.whamcloud.com/browse/LU-7055 Lustre <p>I was hitting "BUG: rwlock wrong CPU on CPU#6, umount/19930" sort of message frequently lately and I found at least one of the abusers.</p> <p>It seems osd_ost_fini calls into osd_seq_free() under write lock, which in turn calls into dput that might sleep which is a no-no.</p> LU-7055

osd_ost_fini calls sleeping function under rwlock

Bug Major Resolved Fixed Emoly Liu Oleg Drokin Fri, 28 Aug 2015 01:56:14 +0000 Mon, 11 Apr 2016 04:37:52 +0000 Mon, 11 Apr 2016 04:28:10 +0000 Lustre 2.9.0 0 7 <p>Hi Emoly,<br/> Can you look into this failure?<br/> Thanks.<br/> Joe</p> <p>The same issue.</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>BUG: rwlock wrong CPU on CPU#2, umount/14990, ffff8800891aa748 (Tainted: G W --------------- ) Pid: 14990, comm: umount Tainted: G W --------------- 2.6.32 #1 Call Trace: [<ffffffff812a728a>] ? rwlock_bug+0x6a/0x70 [<ffffffff812a72fb>] ? _raw_write_unlock+0x6b/0x80 [<ffffffff8154892b>] ? _write_unlock+0x2b/0x40 [<ffffffffa0e22529>] ? osd_obj_map_fini+0x229/0x4b0 [osd_ldiskfs] [<ffffffffa0e0913c>] ? osd_device_fini+0x13c/0x190 [osd_ldiskfs] [<ffffffffa0788573>] ? class_cleanup+0x583/0xd40 [obdclass] [<ffffffffa07663ac>] ? class_name2dev+0x7c/0xe0 [obdclass] [<ffffffffa078a29a>] ? class_process_config+0x156a/0x1ad0 [obdclass] [<ffffffffa0782dfc>] ? lustre_cfg_new+0x16c/0x6e0 [obdclass] [<ffffffffa0782f63>] ? lustre_cfg_new+0x2d3/0x6e0 [obdclass] [<ffffffffa078a979>] ? class_manual_cleanup+0x179/0x6e0 [obdclass] [<ffffffffa0764360>] ? class_export_put+0x110/0x2d0 [obdclass] [<ffffffffa0e0b394>] ? osd_obd_disconnect+0x174/0x1e0 [osd_ldiskfs] [<ffffffffa078ceab>] ? lustre_put_lsi+0x1ab/0xeb0 [obdclass] [<ffffffffa0794f18>] ? lustre_common_put_super+0x5c8/0xbe0 [obdclass] [<ffffffffa07c396d>] ? server_put_super+0x1bd/0xed0 [obdclass] [<ffffffff8119880b>] ? generic_shutdown_super+0x5b/0xe0 [<ffffffff811988f6>] ? kill_anon_super+0x16/0x60 [<ffffffff8119908f>] ? deactivate_super+0x4f/0x80 [<ffffffffa078c7b6>] ? lustre_kill_super+0x36/0x60 [obdclass] [<ffffffff81199097>] ? deactivate_super+0x57/0x80 [<ffffffff811b88cf>] ? mntput_no_expire+0xbf/0x110 [<ffffffff811b943b>] ? sys_umount+0x7b/0x3a0 [<ffffffff8100b0b2>] ? system_call_fastpath+0x16/0x1b </pre> </div></div> <p>Emoly Liu (emoly.liu@intel.com) uploaded a new patch: <a href="http://review.whamcloud.com/19189" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/19189</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-7055" title="osd_ost_fini calls sleeping function under rwlock" class="issue-link" data-issue-key="LU-7055"><del>LU-7055</del></a> osd: move dput() out of osd_ost_fini()'s rwlock<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: c179250f146670543bc0c28aac7a5ee363ae2fd9</p> <p>Oleg Drokin (oleg.drokin@intel.com) merged in patch <a href="http://review.whamcloud.com/19189/" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/19189/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-7055" title="osd_ost_fini calls sleeping function under rwlock" class="issue-link" data-issue-key="LU-7055"><del>LU-7055</del></a> osd: move dput() out of osd_ost_fini()'s rwlock<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: <br/> Commit: ae70c9e898b8230f26f659bfd85665230ea49720</p> <p>This patch has landed to 2.9.</p> Development Rank 1|hzxljz: Rank (Obsolete) 9223372036854775807 Severity