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-2451 Lustre <p>The recovery-small test 24b hung due to the following soft lockup issue on client:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>18:45:08:Lustre: DEBUG MARKER: == recovery-small test 24b: test dirty page discard due to client eviction == 18:45:02 (1354934702) 18:45:08:Lustre: DEBUG MARKER: cancel_lru_locks osc start 18:45:08:Lustre: DEBUG MARKER: cancel_lru_locks osc stop 18:45:08:LustreError: 11-0: an error occurred while communicating with 10.10.4.151@tcp. The ost_write operation failed with -107 18:45:08:LustreError: 167-0: This client was evicted by lustre-OST0000; in progress operations using this service will fail. 18:45:09:Lustre: 20511:0:(llite_lib.c:2285:ll_dirty_page_discard_warn()) dirty page discard: 10.10.4.150@tcp:/lustre/fid: [0x200000401:0x42:0x0]//d0.recovery-small/d24/f24b-1 may get corrupted (rc -4) 18:45:09:LustreError: 20511:0:(client.c:1060:ptlrpc_import_delay_req()) @@@ IMP_INVALID req@ffff88007b678c00 x1420751262452328/t0(0) o4-&gt;lustre-OST0000-osc-ffff88007b271800@10.10.4.151@tcp:6/4 lens 456/416 e 0 to 0 dl 0 ref 2 fl Rpc:/0/ffffffff rc 0/-1 18:46:20:BUG: soft lockup - CPU#0 stuck for 67s! [ll_imp_inval:4791] 18:46:20:Modules linked in: lustre(U) mgc(U) lov(U) osc(U) mdc(U) lmv(U) fid(U) fld(U) lquota(U) ptlrpc(U) obdclass(U) lvfs(U) ksocklnd(U) lnet(U) libcfs(U) nfs fscache nfsd lockd nfs_acl auth_rpcgss exportfs autofs4 sunrpc ib_ipoib rdma_ucm ib_ucm ib_uverbs ib_umad rdma_cm ib_cm iw_cm ib_addr ipv6 ib_sa ib_mad ib_core microcode virtio_balloon 8139too 8139cp mii i2c_piix4 i2c_core ext3 jbd mbcache virtio_blk virtio_pci virtio_ring virtio pata_acpi ata_generic ata_piix dm_mirror dm_region_hash dm_log dm_mod [last unloaded: libcfs] 18:46:22:CPU 0 18:46:22:Modules linked in: lustre(U) mgc(U) lov(U) osc(U) mdc(U) lmv(U) fid(U) fld(U) lquota(U) ptlrpc(U) obdclass(U) lvfs(U) ksocklnd(U) lnet(U) libcfs(U) nfs fscache nfsd lockd nfs_acl auth_rpcgss exportfs autofs4 sunrpc ib_ipoib rdma_ucm ib_ucm ib_uverbs ib_umad rdma_cm ib_cm iw_cm ib_addr ipv6 ib_sa ib_mad ib_core microcode virtio_balloon 8139too 8139cp mii i2c_piix4 i2c_core ext3 jbd mbcache virtio_blk virtio_pci virtio_ring virtio pata_acpi ata_generic ata_piix dm_mirror dm_region_hash dm_log dm_mod [last unloaded: libcfs] 18:46:22: 18:46:22:Pid: 4791, comm: ll_imp_inval Not tainted 2.6.32-279.14.1.el6.x86_64 #1 Red Hat KVM 18:46:22:RIP: 0010:[&lt;ffffffff8150098e&gt;] [&lt;ffffffff8150098e&gt;] _spin_lock+0x1e/0x30 18:46:22:RSP: 0018:ffff88007b60de00 EFLAGS: 00000206 18:46:22:RAX: 0000000000000001 RBX: ffff88007b60de00 RCX: 0000000000000000 18:46:22:RDX: 0000000000000000 RSI: ffffffffa04dfce6 RDI: ffff88007c616734 18:46:22:RBP: ffffffff8100bc0e R08: 00000000ffffff0a R09: 0000000000000000 18:46:23:R10: 000000000000000f R11: 000000000000000f R12: 0000000000000010 18:46:23:R13: ffffffffa0848ef1 R14: ffff88007b60ddc0 R15: 0000000000000000 18:46:24:FS: 00007f65fc14a700(0000) GS:ffff880002200000(0000) knlGS:0000000000000000 18:46:24:CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b 18:46:24:CR2: 000000000208b3c0 CR3: 000000003796c000 CR4: 00000000000006f0 18:46:24:DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 18:46:24:DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 18:46:24:Process ll_imp_inval (pid: 4791, threadinfo ffff88007b60c000, task ffff88007b90b500) 18:46:24:Stack: 18:46:24: ffff88007b60de60 ffffffffa090dead 0000000000000010 ffff880000808003 18:46:24:&lt;d&gt; ffff88007b60de30 000000018109252c ffff88007b60de60 ffff880076109800 18:46:24:&lt;d&gt; ffff88007c616138 ffffffff00000100 ebc0de0100000000 0000000000004e1a 18:46:24:Call Trace: 18:46:25: [&lt;ffffffffa090dead&gt;] ? osc_import_event+0x3ad/0x1470 [osc] 18:46:25: [&lt;ffffffffa0687b01&gt;] ? ptlrpc_invalidate_import+0x2d1/0x910 [ptlrpc] 18:46:25: [&lt;ffffffff810602c0&gt;] ? default_wake_function+0x0/0x20 18:46:25: [&lt;ffffffff811abaef&gt;] ? unshare_fs_struct+0x5f/0xb0 18:46:25: [&lt;ffffffffa0688360&gt;] ? ptlrpc_invalidate_import_thread+0x0/0x2f0 [ptlrpc] 18:46:25: [&lt;ffffffffa06883af&gt;] ? ptlrpc_invalidate_import_thread+0x4f/0x2f0 [ptlrpc] 18:46:25: [&lt;ffffffff8100c14a&gt;] ? child_rip+0xa/0x20 18:46:25: [&lt;ffffffffa0688360&gt;] ? ptlrpc_invalidate_import_thread+0x0/0x2f0 [ptlrpc] 18:46:25: [&lt;ffffffffa0688360&gt;] ? ptlrpc_invalidate_import_thread+0x0/0x2f0 [ptlrpc] 18:46:25: [&lt;ffffffff8100c140&gt;] ? child_rip+0x0/0x20 18:46:26:Code: 00 00 00 01 74 05 e8 62 e0 d7 ff c9 c3 55 48 89 e5 0f 1f 44 00 00 b8 00 00 01 00 3e 0f c1 07 0f b7 d0 c1 e8 10 39 c2 74 0e f3 90 &lt;0f&gt; 1f 44 00 00 83 3f 00 75 f4 eb df c9 c3 0f 1f 40 00 55 48 89 18:46:26:Call Trace: 18:46:26: [&lt;ffffffffa090dead&gt;] ? osc_import_event+0x3ad/0x1470 [osc] 18:46:26: [&lt;ffffffffa0687b01&gt;] ? ptlrpc_invalidate_import+0x2d1/0x910 [ptlrpc] 18:46:26: [&lt;ffffffff810602c0&gt;] ? default_wake_function+0x0/0x20 18:46:26: [&lt;ffffffff811abaef&gt;] ? unshare_fs_struct+0x5f/0xb0 18:46:26: [&lt;ffffffffa0688360&gt;] ? ptlrpc_invalidate_import_thread+0x0/0x2f0 [ptlrpc] 18:46:26: [&lt;ffffffffa06883af&gt;] ? ptlrpc_invalidate_import_thread+0x4f/0x2f0 [ptlrpc] 18:46:26: [&lt;ffffffff8100c14a&gt;] ? child_rip+0xa/0x20 18:46:27: [&lt;ffffffffa0688360&gt;] ? ptlrpc_invalidate_import_thread+0x0/0x2f0 [ptlrpc] 18:46:27: [&lt;ffffffffa0688360&gt;] ? ptlrpc_invalidate_import_thread+0x0/0x2f0 [ptlrpc] 18:46:27: [&lt;ffffffff8100c140&gt;] ? child_rip+0x0/0x20 </pre> </div></div> <p>Maloo report: <a href="https://maloo.whamcloud.com/test_sets/1d70d272-41da-11e2-adcf-52540035b04c" class="external-link" target="_blank" rel="nofollow noopener">https://maloo.whamcloud.com/test_sets/1d70d272-41da-11e2-adcf-52540035b04c</a></p> Lustre Branch: b2_1<br/> Lustre Build: <a href="http://build.whamcloud.com/job/lustre-b2_1/148">http://build.whamcloud.com/job/lustre-b2_1/148</a><br/> Distro/Arch: RHEL6.3/x86_64 (kernel version: 2.6.32-279.14.1.el6)<br/> Network: TCP (1GigE)<br/> LU-2451

recovery-small test_24b: BUG: soft lockup - CPU#0 stuck for 67s! [ll_imp_inval:4791]

Bug Blocker Resolved Duplicate Niu Yawei Jian Yu Mon, 10 Dec 2012 09:43:41 +0000 Tue, 22 Dec 2015 02:53:19 +0000 Tue, 22 Dec 2015 02:53:19 +0000 Lustre 2.1.4 0 6 <p>Probaly someone was holding the cl_loi_list_lock for too long time and caused the soft lockup, unfortunately, there isn't any debuglog and full stack trace on client.</p> <p>The test_24b is a new added test, so it's hard to say if it was a standing problem or caused by recent commits.</p> <p>liang has fixed a similar issue but not sure if it's landed. BTW, this may not be loi_list_lock because otherwise debug info would be printed.</p> <p>I think you were mentioning the <a href="https://jira.whamcloud.com/browse/LU-2263" title="CPU Soft Lockups due to many threads spinning on import lock on Sequoia IO nodes" class="issue-link" data-issue-key="LU-2263"><del>LU-2263</del></a> &amp; <a href="https://jira.whamcloud.com/browse/LU-2327" title="Clients stuck in mount" class="issue-link" data-issue-key="LU-2327"><del>LU-2327</del></a>, they are not fixed yet.</p> <p>Looks CLIENT_OBD_LIST_LOCK_DEBUG isn't enabled by default in b2_1, let's enable it to see if we can capture any useful log.</p> <p>enable CLIENT_OBD_LIST_LOCK_DEBUG by default: <a href="http://review.whamcloud.com/4806" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/4806</a></p> <p>This bug only happened once on b2_1, maybe we should lower the priority and see if it can be reproduced in the futhure (hopefully, with debug log and full stack trace).</p> <p>Lustre Tag: v2_1_4_RC1<br/> Distro/Arch: RHEL6.3/x86_64</p> <p>The same issue occurred again:<br/> <a href="https://maloo.whamcloud.com/test_sets/670ac2da-4829-11e2-a406-52540035b04c" class="external-link" target="_blank" rel="nofollow noopener">https://maloo.whamcloud.com/test_sets/670ac2da-4829-11e2-a406-52540035b04c</a></p> <p>RHEL6.3/x86_64 (2.3.0 Server + 2.1.4 Client):<br/> <a href="https://maloo.whamcloud.com/test_sets/bd3b0534-486f-11e2-8cdc-52540035b04c" class="external-link" target="_blank" rel="nofollow noopener">https://maloo.whamcloud.com/test_sets/bd3b0534-486f-11e2-8cdc-52540035b04c</a></p> <p>will fix it in <a href="https://jira.whamcloud.com/browse/LU-2505" title="lfsck: BUG: soft lockup - CPU#0 stuck for 67s! [umount:22194]" class="issue-link" data-issue-key="LU-2505"><del>LU-2505</del></a>.</p> <p>it still makes sense to land the patch 4806 so it will be easier to find out this kind of issue</p> <blockquote><p>enable CLIENT_OBD_LIST_LOCK_DEBUG by default: <a href="http://review.whamcloud.com/4806" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/4806</a></p></blockquote> <p>Testing on patch Set 2 build <a href="http://build.whamcloud.com/job/lustre-reviews/11215/" class="external-link" target="_blank" rel="nofollow noopener">http://build.whamcloud.com/job/lustre-reviews/11215/</a> failed.</p> <p>After running recovery-small test 24a and 24b, removing the test directories failed and unmounting client hung.</p> <p>Console log on the client showed that:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>Lustre: DEBUG MARKER: /usr/sbin/lctl mark == recovery-small test 24b: test dirty page discard due to client eviction == 22:23:00 \(1355898180\) Lustre: DEBUG MARKER: == recovery-small test 24b: test dirty page discard due to client eviction == 22:23:00 (1355898180) Lustre: DEBUG MARKER: cancel_lru_locks osc start Lustre: DEBUG MARKER: cancel_lru_locks osc stop LustreError: 11-0: an error occurred while communicating with 10.10.4.209@tcp. The ost_write operation failed with -107 Lustre: lustre-OST0000-osc-ffff8800740c6000: Connection to lustre-OST0000 (at 10.10.4.209@tcp) was lost; in progress operations using this service will wait for recovery to complete LustreError: 167-0: This client was evicted by lustre-OST0000; in progress operations using this service will fail. Lustre: 5975:0:(llite_lib.c:2287:ll_dirty_page_discard_warn()) dirty page discard: 10.10.4.208@tcp:/lustre/fid: [0x200000400:0x9:0x0]//d0.recovery-small/d24/f24b-1 may get corrupted (rc -4) LustreError: 5975:0:(client.c:1060:ptlrpc_import_delay_req()) @@@ IMP_INVALID req@ffff8800745a1400 x1421761918796156/t0(0) o4-&gt;lustre-OST0000-osc-ffff8800740c6000@10.10.4.209@tcp:6/4 lens 456/416 e 0 to 0 dl 0 ref 2 fl Rpc:/0/ffffffff rc 0/-1 Lustre: ll_imp_inval:11228: lock ffff8800745b8738 was acquired by &lt;ptlrpcd-brw:5975:brw_interpret:2299&gt; for 5 seconds. Lustre: ====== for process holding the lock ===== Pid: 5975, comm: ptlrpcd-brw Call Trace: [&lt;ffffffff8106244a&gt;] __cond_resched+0x2a/0x40 [&lt;ffffffff814fea60&gt;] _cond_resched+0x30/0x40 [&lt;ffffffff811272e5&gt;] __alloc_pages_nodemask+0x165/0x940 [&lt;ffffffffa03ad831&gt;] ? libcfs_debug_vmsg2+0x4e1/0xb60 [libcfs] [&lt;ffffffff8115c7ea&gt;] alloc_pages_current+0xaa/0x110 [&lt;ffffffff8112572e&gt;] __get_free_pages+0xe/0x50 [&lt;ffffffffa093b252&gt;] ll_dirty_page_discard_warn+0x42/0x220 [lustre] [&lt;ffffffffa03adef1&gt;] ? libcfs_debug_msg+0x41/0x50 [libcfs] [&lt;ffffffffa0938d6b&gt;] ? ll_queue_done_writing+0xfb/0x300 [lustre] [&lt;ffffffffa0978dec&gt;] vvp_page_completion_common+0xcc/0xf0 [lustre] [&lt;ffffffffa0978e5b&gt;] vvp_page_completion_write_common+0x4b/0x60 [lustre] [&lt;ffffffffa097982e&gt;] vvp_page_completion_write+0x10e/0x230 [lustre] [&lt;ffffffffa04f937f&gt;] cl_page_completion+0xff/0x690 [obdclass] [&lt;ffffffffa0790c92&gt;] osc_completion+0x162/0x3d0 [osc] [&lt;ffffffffa0774904&gt;] osc_ap_completion+0x134/0x330 [osc] [&lt;ffffffffa0787e71&gt;] brw_interpret+0x6e1/0x12d0 [osc] [&lt;ffffffffa0648a2b&gt;] ? ptlrpc_unregister_bulk+0x1fb/0xae0 [ptlrpc] [&lt;ffffffffa0641d4b&gt;] ptlrpc_check_set+0x29b/0x1b00 [ptlrpc] [&lt;ffffffffa03adef1&gt;] ? libcfs_debug_msg+0x41/0x50 [libcfs] [&lt;ffffffffa0672fd0&gt;] ptlrpcd_check+0x1a0/0x230 [ptlrpc] [&lt;ffffffffa067326e&gt;] ptlrpcd+0x20e/0x370 [ptlrpc] [&lt;ffffffff810602c0&gt;] ? default_wake_function+0x0/0x20 [&lt;ffffffffa0673060&gt;] ? ptlrpcd+0x0/0x370 [ptlrpc] [&lt;ffffffff8100c14a&gt;] child_rip+0xa/0x20 [&lt;ffffffffa0673060&gt;] ? ptlrpcd+0x0/0x370 [ptlrpc] [&lt;ffffffffa0673060&gt;] ? ptlrpcd+0x0/0x370 [ptlrpc] [&lt;ffffffff8100c140&gt;] ? child_rip+0x0/0x20 Lustre: ====== for current process ===== Pid: 11228, comm: ll_imp_inval Call Trace: [&lt;ffffffffa03a27f5&gt;] libcfs_debug_dumpstack+0x55/0x80 [libcfs] [&lt;ffffffffa0784d4f&gt;] osc_import_event+0x55f/0x1cc0 [osc] [&lt;ffffffffa066dc49&gt;] ptlrpc_invalidate_import+0x2a9/0x8d0 [ptlrpc] [&lt;ffffffff810602c0&gt;] ? default_wake_function+0x0/0x20 [&lt;ffffffff811abaef&gt;] ? unshare_fs_struct+0x5f/0xb0 [&lt;ffffffffa066e490&gt;] ? ptlrpc_invalidate_import_thread+0x0/0x2f0 [ptlrpc] [&lt;ffffffffa066e4df&gt;] ptlrpc_invalidate_import_thread+0x4f/0x2f0 [ptlrpc] [&lt;ffffffff8100c14a&gt;] child_rip+0xa/0x20 [&lt;ffffffffa066e490&gt;] ? ptlrpc_invalidate_import_thread+0x0/0x2f0 [ptlrpc] [&lt;ffffffffa066e490&gt;] ? ptlrpc_invalidate_import_thread+0x0/0x2f0 [ptlrpc] [&lt;ffffffff8100c140&gt;] ? child_rip+0x0/0x20 Lustre: ====== end ======= Lustre: 5975:0:(llite_lib.c:2287:ll_dirty_page_discard_warn()) dirty page discard: 10.10.4.208@tcp:/lustre/fid: [0x200000400:0xa:0x0]//d0.recovery-small/d24/f24b-2 may get corrupted (rc -108) LustreError: 5977:0:(client.c:1060:ptlrpc_import_delay_req()) @@@ IMP_INVALID req@ffff88007d243800 x1421761918796168/t0(0) o101-&gt;lustre-OST0000-osc-ffff8800740c6000@10.10.4.209@tcp:28/4 lens 296/352 e 0 to 0 dl 0 ref 1 fl Rpc:/0/ffffffff rc 0/-1 Lustre: DEBUG MARKER: df /mnt/lustre; uname -n &gt;&gt; /mnt/lustre/recon LustreError: 11297:0:(namei.c:1128:ll_objects_destroy()) obd destroy objid 0xb error -5 Lustre: DEBUG MARKER: lctl set_param -n fail_loc=0 2&gt;/dev/null || true Lustre: DEBUG MARKER: /usr/sbin/lctl mark == recovery-small recovery-small.sh test complete, duration 65 sec == 22:23:07 \(1355898187\) Lustre: DEBUG MARKER: == recovery-small recovery-small.sh test complete, duration 65 sec == 22:23:07 (1355898187) LustreError: 11636:0:(namei.c:1128:ll_objects_destroy()) obd destroy objid 0x5 error -5 Lustre: DEBUG MARKER: /usr/sbin/lctl mark recovery-small : @@@@@@ FAIL: remove sub-test dirs failed Lustre: DEBUG MARKER: recovery-small : @@@@@@ FAIL: remove sub-test dirs failed Lustre: DEBUG MARKER: /usr/sbin/lctl dk &gt; /home/yujian/test_logs/2012-12-18/221902/recovery-small..debug_log.$(hostname -s).1355898187.log; dmesg &gt; /home/yujian/test_logs/2012-12-18/221902/recovery-small..dmesg.$(hostname -s).1355898187.log Lustre: DEBUG MARKER: running=$(grep -c /mnt/lustre' ' /proc/mounts); if [ $running -ne 0 ] ; then echo Stopping client $(hostname) /mnt/lustre opts:; lsof -t /mnt/lustre || need_kill=no; if [ x != x -a x$need_kill != xno ]; then pids=$(lsof -t /mnt/lustre | sort -u); INFO: task ll_imp_inval:11228 blocked for more than 120 seconds. "echo 0 &gt; /proc/sys/kernel/hung_task_timeout_secs" disables this message. ll_imp_inval D 0000000000000000 0 11228 2 0x00000080 ffff880073f91d20 0000000000000046 ffffffffa079ccdc 0000000000000000 ffff880073f91d90 000000008106c04f ffffffffa07ab370 ffff88007d2f9449 ffff88007433dab8 ffff880073f91fd8 000000000000fb88 ffff88007433dab8 Call Trace: [&lt;ffffffff814fee92&gt;] schedule_timeout+0x192/0x2e0 [&lt;ffffffff8107e1c0&gt;] ? process_timeout+0x0/0x10 [&lt;ffffffffa03a35ff&gt;] cfs_pause+0x1f/0x30 [libcfs] [&lt;ffffffffa0784dad&gt;] osc_import_event+0x5bd/0x1cc0 [osc] [&lt;ffffffffa066dc49&gt;] ptlrpc_invalidate_import+0x2a9/0x8d0 [ptlrpc] [&lt;ffffffff810602c0&gt;] ? default_wake_function+0x0/0x20 [&lt;ffffffff811abaef&gt;] ? unshare_fs_struct+0x5f/0xb0 [&lt;ffffffffa066e490&gt;] ? ptlrpc_invalidate_import_thread+0x0/0x2f0 [ptlrpc] [&lt;ffffffffa066e4df&gt;] ptlrpc_invalidate_import_thread+0x4f/0x2f0 [ptlrpc] [&lt;ffffffff8100c14a&gt;] child_rip+0xa/0x20 [&lt;ffffffffa066e490&gt;] ? ptlrpc_invalidate_import_thread+0x0/0x2f0 [ptlrpc] [&lt;ffffffffa066e490&gt;] ? ptlrpc_invalidate_import_thread+0x0/0x2f0 [ptlrpc] [&lt;ffffffff8100c140&gt;] ? child_rip+0x0/0x20 </pre> </div></div> <p>Hi, Yujian, did you try the fix by Jingshan in <a href="https://jira.whamcloud.com/browse/LU-2505" title="lfsck: BUG: soft lockup - CPU#0 stuck for 67s! [umount:22194]" class="issue-link" data-issue-key="LU-2505"><del>LU-2505</del></a>? I think this should be duplicated with <a href="https://jira.whamcloud.com/browse/LU-2505" title="lfsck: BUG: soft lockup - CPU#0 stuck for 67s! [umount:22194]" class="issue-link" data-issue-key="LU-2505"><del>LU-2505</del></a>.</p> <p>bq Hi, Yujian, did you try the fix by Jingshan in <a href="https://jira.whamcloud.com/browse/LU-2505" title="lfsck: BUG: soft lockup - CPU#0 stuck for 67s! [umount:22194]" class="issue-link" data-issue-key="LU-2505"><del>LU-2505</del></a>? I think this should be duplicated with <a href="https://jira.whamcloud.com/browse/LU-2505" title="lfsck: BUG: soft lockup - CPU#0 stuck for 67s! [umount:22194]" class="issue-link" data-issue-key="LU-2505"><del>LU-2505</del></a>.</p> <p>Yes, I just finished verifying the patch of <a href="http://review.whamcloud.com/4866" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/4866</a> for <a href="https://jira.whamcloud.com/browse/LU-2505" title="lfsck: BUG: soft lockup - CPU#0 stuck for 67s! [umount:22194]" class="issue-link" data-issue-key="LU-2505"><del>LU-2505</del></a>. Both recovery-small test 24 and lfsck passed:<br/> <a href="https://maloo.whamcloud.com/test_sets/20b2cac6-49b4-11e2-bef8-52540035b04c" class="external-link" target="_blank" rel="nofollow noopener">https://maloo.whamcloud.com/test_sets/20b2cac6-49b4-11e2-bef8-52540035b04c</a><br/> <a href="https://maloo.whamcloud.com/test_sets/24c38b8c-49b4-11e2-bef8-52540035b04c" class="external-link" target="_blank" rel="nofollow noopener">https://maloo.whamcloud.com/test_sets/24c38b8c-49b4-11e2-bef8-52540035b04c</a></p> <p>Duplicate of <a href="https://jira.whamcloud.com/browse/LU-2505" title="lfsck: BUG: soft lockup - CPU#0 stuck for 67s! [umount:22194]" class="issue-link" data-issue-key="LU-2505"><del>LU-2505</del></a>.</p> <p>reopen the ticket because I want to land patch 4806.</p> <p>Should <a href="http://review.whamcloud.com/4806" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/4806</a> be abandoned and this patch be closed?</p> Duplicate LU-2505 Development Rank 1|hzvdhj: Rank (Obsolete) 5791 Severity