PID: 12374 TASK: ffff88012b485550 CPU: 2 COMMAND: "umount" #0 [ffff8800a996b5e8] 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 [ffff8800a996b648] __crash_kexec at ffffffff811160a2 /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/kernel/kexec_core.c: 897 #2 [ffff8800a996b718] crash_kexec at ffffffff81116190 /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/./arch/x86/include/asm/atomic.h: 37 #3 [ffff8800a996b730] oops_end at ffffffff817eb798 /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/arch/x86/kernel/dumpstack.c: 201 #4 [ffff8800a996b758] no_context at ffffffff810708c4 /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/arch/x86/mm/fault.c: 770 #5 [ffff8800a996b7a8] __bad_area_nosemaphore at ffffffff81070b92 /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/arch/x86/mm/fault.c: 852 #6 [ffff8800a996b7f8] bad_area_nosemaphore at ffffffff81070cb4 /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/arch/x86/mm/fault.c: 859 #7 [ffff8800a996b808] __do_page_fault at ffffffff817ee7d8 /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/arch/x86/mm/fault.c: 1359 #8 [ffff8800a996b870] 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 [ffff8800a996b8b0] 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 [ffff8800a996b8d0] 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: ffffffffa018bf58 RSP: ffff8800a996b980 RFLAGS: 00010083 RAX: 0000000000002710 RBX: ffff8800b0a26910 RCX: 0000000000000005 RDX: ffff8800b0a26b70 RSI: ffff8800b0a26928 RDI: 0000000000000046 RBP: ffff8800a996b9a8 R8: 0000000000000000 R9: 5130000000000000 R10: 6633393161206563 R11: 61727420646e6520 R12: 0000000000000001 R13: 0000000000000000 R14: ffff8800b0aa06d8 R15: ffff8800a996b9b8 ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018 /home/green/git/lustre-release/libcfs/libcfs/linux/xarray.c: 583 #11 [ffff8800a996b9b0] xa_destroy at ffffffffa018d26f [libcfs] /home/green/git/lustre-release/libcfs/libcfs/linux/xarray.c: 2016 #12 [ffff8800a996ba10] osc_quota_cleanup at ffffffffa08a38a5 [osc] /home/green/git/lustre-release/lustre/osc/osc_quota.c: 185 #13 [ffff8800a996ba20] osc_cleanup_common at ffffffffa0884f1f [osc] /home/green/git/lustre-release/lustre/osc/osc_request.c: 3885 #14 [ffff8800a996ba40] class_free_dev at ffffffffa03068f9 [obdclass] /home/green/git/lustre-release/libcfs/include/libcfs/libcfs_debug.h: 155 #15 [ffff8800a996bab0] class_export_put at ffffffffa0306ff0 [obdclass] /home/green/git/lustre-release/lustre/obdclass/genops.c: 1000 #16 [ffff8800a996bad0] class_unlink_export at ffffffffa0308c15 [obdclass] /home/green/git/lustre-release/lustre/obdclass/genops.c: 1161 #17 [ffff8800a996baf8] class_decref_free at ffffffffa031e18e [obdclass] /home/green/git/lustre-release/lustre/obdclass/obd_config.c: 950 #18 [ffff8800a996bb08] class_decref at ffffffffa031eaf8 [obdclass] /home/green/git/lustre-release/lustre/obdclass/obd_config.c: 959 #19 [ffff8800a996bb20] class_detach at ffffffffa031ef01 [obdclass] /home/green/git/lustre-release/lustre/obdclass/obd_config.c: 817 #20 [ffff8800a996bb40] class_process_config at ffffffffa0326bbb [obdclass] /home/green/git/lustre-release/libcfs/include/libcfs/libcfs_debug.h: 155 #21 [ffff8800a996bbf0] class_manual_cleanup at ffffffffa0327f20 [obdclass] /home/green/git/lustre-release/lustre/obdclass/obd_config.c: 2365 #22 [ffff8800a996bca0] lov_tgts_putref at ffffffffa0919ed5 [lov] /home/green/git/lustre-release/lustre/lov/lov_obd.c: 100 #23 [ffff8800a996bd00] lov_disconnect at ffffffffa091eea7 [lov] /home/green/git/lustre-release/lustre/lov/lov_obd.c: 340 #24 [ffff8800a996bd28] obd_connect.constprop.59 at ffffffffa0eb9c96 [lustre] /home/green/git/lustre-release/libcfs/include/libcfs/libcfs_debug.h: 155 #25 [ffff8800a996bd48] ll_put_super at ffffffffa0ec30d7 [lustre] /home/green/git/lustre-release/lustre/llite/llite_lib.c: 935 #26 [ffff8800a996be40] generic_shutdown_super at ffffffff812476ca /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/fs/super.c: 401 #27 [ffff8800a996be60] kill_anon_super at ffffffff81247ac2 /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/fs/super.c: 961 #28 [ffff8800a996be78] lustre_kill_super at ffffffffa0ef188b [lustre] /home/green/git/lustre-release/lustre/llite/super25.c: 212 #29 [ffff8800a996be90] deactivate_locked_super at ffffffff81247ec9 /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/fs/super.c: 277 #30 [ffff8800a996beb0] deactivate_super at ffffffff81248616 /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/fs/super.c: 298 #31 [ffff8800a996bec8] cleanup_mnt at ffffffff81268b1f /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/fs/namespace.c: 1172 #32 [ffff8800a996bee0] __cleanup_mnt at ffffffff81268bb2 /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/fs/namespace.c: 1179 #33 [ffff8800a996bef0] task_work_run at ffffffff810b69b5 /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/kernel/task_work.c: 89 #34 [ffff8800a996bf30] do_notify_resume at ffffffff8102ccb2 /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/include/linux/tracehook.h: 196 #35 [ffff8800a996bf50] int_signal at ffffffff817f4363 /home/green/bk/linux-3.10.0-1160.59.1.el7-debug/arch/x86/kernel/entry_64.S: 701 RIP: 00007fbcf96f1ba7 RSP: 00007ffdab47d598 RFLAGS: 00000246 RAX: 0000000000000000 RBX: 00005626607c7040 RCX: ffffffffffffffff RDX: 0000000000000001 RSI: 0000000000000000 RDI: 00005626607c87d0 RBP: 00005626607c87d0 R8: 0000000000000000 R9: 000000000000000c R10: 00007ffdab47d160 R11: 0000000000000246 R12: 00007fbcfa26fd78 R13: 0000000000000000 R14: 00005626607c88d0 R15: 00005626607c7040 ORIG_RAX: 00000000000000a6 CS: 0033 SS: 002b