https://jira.whamcloud.com This file is an XML representation of an issue en-us 9.4.14 940014 05-12-2023 https://jira.whamcloud.com/browse/LU-13388 Lustre <div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent"> <pre class="code-java"> [1646646.422771] RIP: 0010:[&lt;ffffffffc139b847&gt;] [&lt;ffffffffc139b847&gt;] lod_obj_for_each_stripe+0xf7/0x2d0 [lod] [1646646.435082] RSP: 0018:ffff880f9abe3a10 EFLAGS: 00010206 [1646646.442587] RAX: 5a5a5a5a5a5a5a5a RBX: 0000000000000001 RCX: 0000000000000003 [1646646.452116] RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff8807b7128308 [1646646.461625] RBP: ffff880f9abe3a50 R08: 0000000000000000 R09: 0000000000000000 [1646646.471118] R10: 000000000000000e R11: ffff880ff2b35800 R12: 0000000000000000 [1646646.480600] R13: ffff88077e4d8a18 R14: ffff880f9abd8800 R15: ffff880f9abe3a68 [1646646.490067] FS: 0000000000000000(0000) GS:ffff88101d980000(0000) knlGS:0000000000000000 [1646646.500607] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [1646646.508522] CR2: 0000000000838024 CR3: 0000000001a0a000 CR4: 00000000000607e0 [1646646.517983] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [1646646.527407] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [1646646.536812] Call Trace: [1646646.540971] [&lt;ffffffffc139d93f&gt;] lod_declare_attr_set+0x3af/0x690 [lod] [1646646.549874] [&lt;ffffffffc138c520&gt;] ? lod_gen_component_id+0x1b0/0x1b0 [lod] [1646646.558963] [&lt;ffffffffc1420d2b&gt;] mdd_attr_set+0x70b/0xda0 [mdd] [1646646.567096] [&lt;ffffffffc0e2e532&gt;] ? lustre_msg_get_versions+0x22/0xf0 [ptlrpc] [1646646.576549] [&lt;ffffffffc1286000&gt;] ? mdt_fail_write+0x180/0x190 [mdt] [1646646.585006] [&lt;ffffffffc128e9fa&gt;] mdt_attr_set+0x1ea/0x770 [mdt] [1646646.593098] [&lt;ffffffffc0eba9a3&gt;] ? tgt_fmd_put+0x23/0x130 [ptlrpc] [1646646.601430] [&lt;ffffffffc128f879&gt;] mdt_reint_setattr+0x679/0xe90 [mdt] [1646646.609937] [&lt;ffffffffc127f302&gt;] ? ucred_set_audit_enabled.isra.14+0x22/0x60 [mdt] [1646646.619786] [&lt;ffffffffc1293ba3&gt;] mdt_reint_rec+0x83/0x210 [mdt] [1646646.627770] [&lt;ffffffffc126f3d3&gt;] mdt_reint_internal+0x703/0xae0 [mdt] [1646646.636319] [&lt;ffffffffc127a637&gt;] mdt_reint+0x67/0x140 [mdt] [1646646.643904] [&lt;ffffffffc0e9beaa&gt;] tgt_request_handle+0x97a/0x15d0 [ptlrpc] [1646646.652814] [&lt;ffffffffc09d3fd7&gt;] ? libcfs_debug_msg+0x57/0x80 [libcfs] [1646646.661438] [&lt;ffffffffc0e3d996&gt;] ptlrpc_server_handle_request+0x256/0xb10 [ptlrpc] [1646646.671219] [&lt;ffffffff810c0bd4&gt;] ? __wake_up+0x44/0x50 [1646646.678282] [&lt;ffffffffc0e4156c&gt;] ptlrpc_main+0xbcc/0x1510 [ptlrpc] [1646646.686498] [&lt;ffffffffc0e409a0&gt;] ? ptlrpc_register_service+0x1010/0x1010 [ptlrpc] [1646646.696123] [&lt;ffffffff810b4031&gt;] kthread+0xd1/0xe0 [1646646.702722] [&lt;ffffffff810b3f60&gt;] ? insert_kthread_work+0x40/0x40 [1646646.710671] [&lt;ffffffff816c455d&gt;] ret_from_fork+0x5d/0xb0 [1646646.717822] [&lt;ffffffff810b3f60&gt;] ? insert_kthread_work+0x40/0x40 [1646646.725727] Code: 0f 85 60 01 00 00 49 83 7f 08 00 74 57 66 41 83 7e 24 00 0f 84 b7 01 00 00 31 db 66 0f 1f 84 00 00 00 00 00 49 8b 46 68 48 63 d3 &lt;48&gt; 8b 14 d0 48 85 d2 74 22 4c 89 3c 24 41 89 d9 49 8b 47 08 45 [1646646.749510] RIP [&lt;ffffffffc139b847&gt;] lod_obj_for_each_stripe+0xf7/0x2d0 [lod] </pre> </div></div> LU-13388

racer crash: general protection fault: 0000 RIP: lod_obj_for_each_stripe+0xf7/0x2d0 [lod]

Improvement Minor Resolved Fixed Vitaly Fertman Vitaly Fertman Wed, 25 Mar 2020 12:47:19 +0000 Mon, 24 Jan 2022 09:56:42 +0000 Fri, 1 May 2020 05:02:12 +0000 Lustre 2.14.0 0 2 <p>1 thread is doing setattr, and takes the update ibit lock (optionally +lookup and perm bits)<br/> another thread is doing layout_change and takes the layout ibit lock.<br/> the layout change may lead to changing the component amount in the object with SEL, and therefore the 1st thread becomes unprotected.<br/> previous operations like component add/del (mdt_reint_setxattr) take update ibit lock, so had no problems.<br/> the layout_change need to take an update ibit lock as well where applicable</p> <p>Vitaly Fertman (vitaly.fertman@hpe.com) uploaded a new patch: <a href="https://review.whamcloud.com/38069" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/38069</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-13388" title="racer crash: general protection fault: 0000 RIP: lod_obj_for_each_stripe+0xf7/0x2d0 [lod]" class="issue-link" data-issue-key="LU-13388"><del>LU-13388</del></a> lod: unprotected access to component entries<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: 4045b4490c753659ad779ed772a9807b3d201291</p> <p>Oleg Drokin (green@whamcloud.com) merged in patch <a href="https://review.whamcloud.com/38069/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/38069/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-13388" title="racer crash: general protection fault: 0000 RIP: lod_obj_for_each_stripe+0xf7/0x2d0 [lod]" class="issue-link" data-issue-key="LU-13388"><del>LU-13388</del></a> lod: unprotected access to component entries<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: <br/> Commit: 6e2c8ef7267694125d87cfc8232dc36034de8b01</p> <p>Landed for 2.14</p> <p>"Etienne AUJAMES &lt;eaujames@ddn.com&gt;" uploaded a new patch: <a href="https://review.whamcloud.com/46280" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/46280</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-13388" title="racer crash: general protection fault: 0000 RIP: lod_obj_for_each_stripe+0xf7/0x2d0 [lod]" class="issue-link" data-issue-key="LU-13388"><del>LU-13388</del></a> lod: unprotected access to component entries<br/> Project: fs/lustre-release<br/> Branch: b2_12<br/> Current Patch Set: 1<br/> Commit: 8941a00c81daf7a2436ec2ecb802fb3ad7463876</p> Development Rank 1|i00wav: Rank (Obsolete) 9223372036854775807