[LU-12965] class_import_put()) ASSERTION( _v >= 0 && _v < 0x5a5a5a5a ) failed: value: 1515870810

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.14.0, Lustre 2.12.4
• Affects Version/s: Lustre 2.12.3
• Severity: 3
• Assignee: Dongyang Li
• Reporter: Dongyang Li

Description

client hit LASSERT during umount

2019-11-12 21:52:38 [448715.770987] LustreError: 77914:0:(genops.c:1272:class_import_put()) ASSERTION( __v >= 0 && __v
 < 0x5a5a5a5a ) failed: value: 1515870810
2019-11-12 21:52:38 [448715.784703] LustreError: 77914:0:(genops.c:1272:class_import_put()) LBUG
2019-11-12 21:52:38 [448715.792294] Pid: 77914, comm: umount 4.18.0-80.11.2.el8_0.x86_64 #1 SMP Tue Sep 24 11:32:19 UT
C 2019
2019-11-12 21:52:38 [448715.802973] Call Trace:
2019-11-12 21:52:38 [448715.806196]  libcfs_call_trace+0x86/0xc0 [libcfs]
2019-11-12 21:52:38 [448715.811911]  lbug_with_loc+0x43/0x80 [libcfs]
2019-11-12 21:52:38 [448715.817254]  class_import_put+0x269/0x2a0 [obdclass]
2019-11-12 21:52:38 [448715.823259]  osc_precleanup_common+0xad/0x270 [osc]
2019-11-12 21:52:38 [448715.829165]  osc_precleanup+0x23/0xb0 [osc]
2019-11-12 21:52:38 [448715.834311]  class_cleanup+0x341/0xb30 [obdclass]
2019-11-12 21:52:38 [448715.840026]  class_process_config+0x4a3/0x2780 [obdclass]
2019-11-12 21:52:38 [448715.846514]  class_manual_cleanup+0x44f/0x750 [obdclass]
2019-11-12 21:52:38 [448715.852899]  lov_tgts_putref+0x5b5/0xa00 [lov]
2019-11-12 21:52:38 [448715.858311]  lov_disconnect+0x9a/0x180 [lov]
2019-11-12 21:52:38 [448715.863532]  obd_disconnect+0xef/0x2b0 [lustre]
2019-11-12 21:52:38 [448715.869047]  ll_put_super+0x48d/0x7f0 [lustre]
2019-11-12 21:52:38 [448715.874459]  generic_shutdown_super+0x6c/0x100
2019-11-12 21:52:38 [448715.879864]  kill_anon_super+0xe/0x20
2019-11-12 21:52:38 [448715.884399]  deactivate_locked_super+0x34/0x70
2019-11-12 21:52:38 [448715.889813]  cleanup_mnt+0x3b/0x70
2019-11-12 21:52:38 [448715.894066]  task_work_run+0x8a/0xb0
2019-11-12 21:52:38 [448715.898511]  exit_to_usermode_loop+0xeb/0xf0
2019-11-12 21:52:38 [448715.903735]  do_syscall_64+0x182/0x1b0
2019-11-12 21:52:38 [448715.908376]  entry_SYSCALL_64_after_hwframe+0x65/0xca
2019-11-12 21:52:38 [448715.914471]  0xffffffffffffffff
2019-11-12 21:52:38 [448715.918428] Kernel panic - not syncing: LBUG
2019-11-12 21:52:38 [448715.923652] CPU: 54 PID: 77914 Comm: umount Tainted: G           OE    --------- -t - 4.18.0-8
0.11.2.el8_0.x86_64 #1