PID: 9909 TASK: ffff8800b6498000 CPU: 0 COMMAND: "umount" #0 [ffff8800a804f5b8] machine_kexec at ffffffff810613ae /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/arch/x86/kernel/machine_kexec_64.c: 343 #1 [ffff8800a804f618] __crash_kexec at ffffffff811160a2 /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/kernel/kexec_core.c: 897 #2 [ffff8800a804f6e8] crash_kexec at ffffffff81116190 /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/./arch/x86/include/asm/atomic.h: 37 #3 [ffff8800a804f700] oops_end at ffffffff817eb798 /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/arch/x86/kernel/dumpstack.c: 201 #4 [ffff8800a804f728] no_context at ffffffff810708c4 /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/arch/x86/mm/fault.c: 770 #5 [ffff8800a804f778] __bad_area_nosemaphore at ffffffff81070b92 /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/arch/x86/mm/fault.c: 852 #6 [ffff8800a804f7c8] bad_area_nosemaphore at ffffffff81070cb4 /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/arch/x86/mm/fault.c: 859 #7 [ffff8800a804f7d8] __do_page_fault at ffffffff817ee7d8 /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/arch/x86/mm/fault.c: 1359 #8 [ffff8800a804f840] trace_do_page_fault at ffffffff817eea76 /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/arch/x86/mm/fault.c: 1396 #9 [ffff8800a804f880] do_async_page_fault at ffffffff817edfe2 /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/arch/x86/kernel/kvm.c: 289 #10 [ffff8800a804f8a0] async_page_fault at ffffffff817ea7a8 /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/arch/x86/kernel/entry_64.S: 1432 [exception RIP: xas_free_nodes+184] RIP: ffffffffa016df58 RSP: ffff8800a804f950 RFLAGS: 00010083 RAX: 0000000000002710 RBX: ffff880136ef66c8 RCX: 0000000000000023 RDX: ffff880136ef5930 RSI: ffff880136ef66e0 RDI: 0000000000000046 RBP: ffff8800a804f978 R8: 0000000000000000 R9: 77b0000000000000 R10: 00000000af0c2d01 R11: ffff8800af0c2f80 R12: 000000000000002a R13: 0000000000000000 R14: ffff880136ef56d0 R15: ffff8800a804f988 ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018 /home/green/git/lustre-release/libcfs/libcfs/linux/xarray.c: 583 #11 [ffff8800a804f980] xa_destroy at ffffffffa016f26f [libcfs] /home/green/git/lustre-release/libcfs/libcfs/linux/xarray.c: 2016 #12 [ffff8800a804f9e0] osc_quota_cleanup at ffffffffa08814c5 [osc] /home/green/git/lustre-release/lustre/osc/osc_quota.c: 185 #13 [ffff8800a804f9f0] osc_cleanup_common at ffffffffa0862f1f [osc] /home/green/git/lustre-release/lustre/osc/osc_request.c: 3877 #14 [ffff8800a804fa10] class_free_dev at ffffffffa02e88f9 [obdclass] /home/green/git/lustre-release/libcfs/include/libcfs/libcfs_debug.h: 155 #15 [ffff8800a804fa80] class_export_put at ffffffffa02e8ff0 [obdclass] /home/green/git/lustre-release/lustre/obdclass/genops.c: 1000 #16 [ffff8800a804faa0] class_unlink_export at ffffffffa02eac15 [obdclass] /home/green/git/lustre-release/lustre/obdclass/genops.c: 1161 #17 [ffff8800a804fac8] class_decref_free at ffffffffa030016e [obdclass] /home/green/git/lustre-release/lustre/obdclass/obd_config.c: 950 #18 [ffff8800a804fad8] class_decref at ffffffffa0300ad8 [obdclass] /home/green/git/lustre-release/lustre/obdclass/obd_config.c: 959 #19 [ffff8800a804faf0] class_detach at ffffffffa0300ee1 [obdclass] /home/green/git/lustre-release/lustre/obdclass/obd_config.c: 817 #20 [ffff8800a804fb10] class_process_config at ffffffffa0308b9b [obdclass] /home/green/git/lustre-release/libcfs/include/libcfs/libcfs_debug.h: 155 #21 [ffff8800a804fbc0] class_manual_cleanup at ffffffffa0309f00 [obdclass] /home/green/git/lustre-release/lustre/obdclass/obd_config.c: 2365 #22 [ffff8800a804fc70] lov_tgts_putref at ffffffffa08f7955 [lov] /home/green/git/lustre-release/lustre/lov/lov_obd.c: 100 #23 [ffff8800a804fcd0] lov_disconnect at ffffffffa08fc927 [lov] /home/green/git/lustre-release/lustre/lov/lov_obd.c: 340 #24 [ffff8800a804fcf8] obd_connect.constprop.58 at ffffffffa0e82b46 [lustre] /home/green/git/lustre-release/libcfs/include/libcfs/libcfs_debug.h: 155 #25 [ffff8800a804fd18] ll_put_super at ffffffffa0e8bf6c [lustre] /home/green/git/lustre-release/lustre/llite/llite_lib.c: 935 #26 [ffff8800a804fe40] generic_shutdown_super at ffffffff812476ca /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/fs/super.c: 401 #27 [ffff8800a804fe60] kill_anon_super at ffffffff81247ac2 /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/fs/super.c: 961 #28 [ffff8800a804fe78] lustre_kill_super at ffffffffa0eba56b [lustre] /home/green/git/lustre-release/lustre/llite/super25.c: 212 #29 [ffff8800a804fe90] deactivate_locked_super at ffffffff81247ec9 /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/fs/super.c: 277 #30 [ffff8800a804feb0] deactivate_super at ffffffff81248616 /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/fs/super.c: 298 #31 [ffff8800a804fec8] cleanup_mnt at ffffffff81268b1f /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/fs/namespace.c: 1172 #32 [ffff8800a804fee0] __cleanup_mnt at ffffffff81268bb2 /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/fs/namespace.c: 1179 #33 [ffff8800a804fef0] task_work_run at ffffffff810b69b5 /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/kernel/task_work.c: 89 #34 [ffff8800a804ff30] do_notify_resume at ffffffff8102ccb2 /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/include/linux/tracehook.h: 196 #35 [ffff8800a804ff50] int_signal at ffffffff817f4363 /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/arch/x86/kernel/entry_64.S: 701 RIP: 00007f19b9af1ba7 RSP: 00007ffc60cb3e68 RFLAGS: 00000246 RAX: 0000000000000000 RBX: 000056052c451040 RCX: ffffffffffffffff RDX: 0000000000000001 RSI: 0000000000000000 RDI: 000056052c4527d0 RBP: 000056052c4527d0 R8: 0000000000000000 R9: 000000000000000c R10: 00007ffc60cb3a30 R11: 0000000000000246 R12: 00007f19ba66fd78 R13: 0000000000000000 R14: 000056052c4528d0 R15: 000056052c451040 ORIG_RAX: 00000000000000a6 CS: 0033 SS: 002b