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-9224 Lustre <p>The failure is reported in the sanity test_802 as following:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre> [34652.466072] Turning device loop1 (0x700001) read-only [34652.466711] Lustre: lustre-OST0000-osd: set dev_rdonly on this device [34653.175764] LDISKFS-fs (loop2): file extents enabled, maximum tree depth=5 [34653.180480] LDISKFS-fs (loop2): mounted filesystem with ordered data mode. Opts: ,errors=remount-ro,no_mbcache,nodelalloc [34653.182471] Turning device loop2 (0x700002) read-only [34656.566184] Lustre: 22422:0:(client.c:2113:ptlrpc_expire_one_request()) @@@ Request sent has timed out for slow reply: [sent 1489746185/real 1489746185] req@ffff88004c56fc40 x1562110670363184/t0(0) o8-&gt;lustre-OST0001-osc-MDT0000@0@lo:28/4 lens 520/544 e 0 to 1 dl 1489746190 ref 1 fl Rpc:XN/0/ffffffff rc 0/-1 [34658.568693] LustreError: 3307:0:(lmv_obd.c:1395:lmv_statfs()) can't stat MDS #0 (lustre-MDT0000-mdc-ffff88002024c800), error -13 [34658.570580] BUG: unable to handle kernel paging request at ffff88007e6d6e10 [34658.571428] IP: [&lt;ffffffff81700f82&gt;] mutex_lock_nested+0xc2/0x3b0 [34658.572016] PGD 2e75067 PUD bcc1a067 PMD bca26067 PTE 800000007e6d6060 [34658.572635] Oops: 0002 [#1] SMP DEBUG_PAGEALLOC [34658.573208] Modules linked in: obdecho(OE) lustre(OE) ofd(OE) osp(OE) lod(OE) ost(OE) mdt(OE) mdd(OE) mgs(OE) osd_ldiskfs(OE) ldiskfs(OE) lquota(OE) lfsck(OE) mgc(OE) lov(OE) osc(OE) mdc(OE) lmv(OE) fid(OE) fld(OE) ptlrpc_gss(OE) ptlrpc(OE) obdclass(OE) ksocklnd(OE) lnet(OE) libcfs(OE) brd ext4 loop mbcache jbd2 rpcsec_gss_krb5 syscopyarea ata_generic sysfillrect pata_acpi sysimgblt ttm drm_kms_helper drm ata_piix i2c_piix4 pcspkr serio_raw virtio_console virtio_blk virtio_balloon i2c_core libata floppy nfsd ip_tables [last unloaded: obdecho] [34658.577701] CPU: 2 PID: 22422 Comm: ptlrpcd_rcv Tainted: G W OE ------------ 3.10.0-debug #1 [34658.578784] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [34658.579352] task: ffff8800ad87eac0 ti: ffff88006ae90000 task.ti: ffff88006ae90000 [34658.580395] RIP: 0010:[&lt;ffffffff81700f82&gt;] [&lt;ffffffff81700f82&gt;] mutex_lock_nested+0xc2/0x3b0 [34658.581479] RSP: 0018:ffff88006ae93a48 EFLAGS: 00010046 [34658.582032] RAX: 0000000000020000 RBX: ffff8800ad87eac0 RCX: 0000000000000000 [34658.582627] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000246 [34658.583219] RBP: ffff88006ae93ab8 R08: 0000000000000000 R09: 0000000000000000 [34658.583809] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8800ad87eac0 [34658.584423] R13: ffff88007e6d6e08 R14: ffff88007e6d6e10 R15: 0000000000000246 [34658.585012] FS: 0000000000000000(0000) GS:ffff8800bc700000(0000) knlGS:0000000000000000 [34658.586634] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [34658.587204] CR2: ffff88007e6d6e10 CR3: 00000000487fb000 CR4: 00000000000006e0 [34658.587796] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [34658.588386] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [34658.588972] Stack: [34658.589472] ffffffffa010b059 ffff880071feb000 ffff88006ae90000 ffff880071feb0d8 [34658.590546] ffff8800b0955c48 ffff88006ae93ad0 ffffffffa022fee7 0000000000000010 [34658.591620] 0000000006b1ecbe ffff8800ad87eac0 ffff88007e6d6e08 ffff880053b03c40 [34658.592692] Call Trace: [34658.593207] [&lt;ffffffffa010b059&gt;] ? seq_client_flush+0x59/0x170 [fid] [34658.593799] [&lt;ffffffffa022fee7&gt;] ? libcfs_debug_msg+0x57/0x80 [libcfs] [34658.594384] [&lt;ffffffffa010b059&gt;] seq_client_flush+0x59/0x170 [fid] [34658.594961] [&lt;ffffffff810b7ce0&gt;] ? wake_up_state+0x20/0x20 [34658.595534] [&lt;ffffffffa0783341&gt;] mdc_import_event+0x91/0xa00 [mdc] [34658.596149] [&lt;ffffffffa05d9b1d&gt;] ptlrpc_deactivate_and_unlock_import+0xdd/0x3e0 [ptlrpc] [34658.597244] [&lt;ffffffffa05ddc1e&gt;] ptlrpc_connect_interpret+0x4ae/0x26f0 [ptlrpc] [34658.598391] [&lt;ffffffffa05bb404&gt;] ? ptlrpc_unregister_bulk+0xc4/0x7c0 [ptlrpc] [34658.599529] [&lt;ffffffff817063f7&gt;] ? _raw_spin_unlock+0x27/0x40 [34658.600122] [&lt;ffffffffa05b3159&gt;] ? after_reply+0x9a9/0xf50 [ptlrpc] [34658.600730] [&lt;ffffffffa05b4728&gt;] ? ptlrpc_check_set.part.21+0x1028/0x1e80 [ptlrpc] [34658.601815] [&lt;ffffffffa05b3b77&gt;] ptlrpc_check_set.part.21+0x477/0x1e80 [ptlrpc] [34658.602866] [&lt;ffffffff81391dd7&gt;] ? debug_object_free+0x127/0x180 [34658.603439] [&lt;ffffffff81700989&gt;] ? schedule_timeout+0x179/0x2a0 [34658.604036] [&lt;ffffffffa05b55db&gt;] ptlrpc_check_set+0x5b/0xe0 [ptlrpc] [34658.604651] [&lt;ffffffffa05e138b&gt;] ptlrpcd_check+0x4bb/0x570 [ptlrpc] [34658.605262] [&lt;ffffffffa05e16fb&gt;] ptlrpcd+0x2bb/0x580 [ptlrpc] [34658.605834] [&lt;ffffffff810b7ce0&gt;] ? wake_up_state+0x20/0x20 [34658.606434] [&lt;ffffffffa05e1440&gt;] ? ptlrpcd_check+0x570/0x570 [ptlrpc] [34658.607018] [&lt;ffffffff810a2eda&gt;] kthread+0xea/0xf0 [34658.607574] [&lt;ffffffff810a2df0&gt;] ? kthread_create_on_node+0x140/0x140 [34658.608155] [&lt;ffffffff8170fbd8&gt;] ret_from_fork+0x58/0x90 [34658.608718] [&lt;ffffffff810a2df0&gt;] ? kthread_create_on_node+0x140/0x140 [34658.609297] Code: 41 f7 87 44 c0 ff ff 00 ff ff 07 0f 85 b8 02 00 00 9c 58 0f 1f 44 00 00 49 89 c7 fa 66 0f 1f 44 00 00 b8 00 00 02 00 4d 8d 75 08 &lt;f0&gt; 41 0f c1 45 08 89 c2 c1 ea 10 66 39 c2 89 d1 0f 85 69 02 00 [34658.611497] RIP [&lt;ffffffff81700f82&gt;] mutex_lock_nested+0xc2/0x3b0 [34658.612077] RSP &lt;ffff88006ae93a48&gt; [34658.612605] CR2: ffff88007e6d6e10 </pre> </div></div> LU-9224

race condition between client_fid_fini() and seq_client_flush()

Bug Major Resolved Fixed nasf nasf Sat, 18 Mar 2017 14:37:00 +0000 Thu, 30 Mar 2017 03:56:37 +0000 Thu, 30 Mar 2017 03:56:37 +0000 Lustre 2.10.0 0 3 <p>When client mount failure or umount, the client_fid_fini() will be called. At that time, the async connection failure will trigger seq_client_flush(). Unfortunately the parameter for seq_client_flush() may be released by client_fid_fini() by race</p> <p>Fan Yong (fan.yong@intel.com) uploaded a new patch: <a href="https://review.whamcloud.com/26079" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/26079</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-9224" title="race condition between client_fid_fini() and seq_client_flush()" class="issue-link" data-issue-key="LU-9224"><del>LU-9224</del></a> fid: race between client_fid_fini and seq_client_flush<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: d7959890967eaca7d0a6076622d5e2f3d015fa5d</p> <p>Oleg Drokin (oleg.drokin@intel.com) merged in patch <a href="https://review.whamcloud.com/26079/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/26079/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-9224" title="race condition between client_fid_fini() and seq_client_flush()" class="issue-link" data-issue-key="LU-9224"><del>LU-9224</del></a> fid: race between client_fid_fini and seq_client_flush<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: <br/> Commit: c0d30fc79be0788fca19bfa7e3b5048881195fc6</p> Development Rank 1|hzz7lb: Rank (Obsolete) 9223372036854775807 Severity