PID: 8      TASK: ffff9f5541220000  CPU: 1   COMMAND: "kworker/u8:0"
 #0 [ffffb55e00c97c80] machine_kexec at ffffffff89a850a3
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/arch/x86/kernel/machine_kexec_64.c: 417
 #1 [ffffb55e00c97cd8] __crash_kexec at ffffffff89c3e5ba
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/kernel/kexec_core.c: 955
 #2 [ffffb55e00c97d98] panic at ffffffff89b199d8
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/kernel/panic.c: 230
 #3 [ffffb55e00c97e18] lbug_with_loc.cold.4 at ffffffffc0768d24 [libcfs]
    /home/green/git/lustre-release/lnet/libcfs/debug.c: 530
 #4 [ffffb55e00c97e20] target_destroy_export at ffffffffc0e07b5e [ptlrpc]
    /home/green/git/lustre-release/lustre/ptlrpc/../ldlm/ldlm_lib.c: 1800
 #5 [ffffb55e00c97e40] ofd_destroy_export at ffffffffc1ce6d1b [ofd]
    /home/green/git/lustre-release/include/uapi/linux/lustre/lustre_user.h: 1465
 #6 [ffffb55e00c97e60] class_export_destroy at ffffffffc095f394 [obdclass]
    /home/green/git/lustre-release/lustre/include/obd_class.h: 1027
 #7 [ffffb55e00c97e80] obd_zombie_exp_cull at ffffffffc095f996 [obdclass]
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/./include/linux/compiler.h: 339
 #8 [ffffb55e00c97e88] process_one_work at ffffffff89b4b8e8
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/kernel/workqueue.c: 2384
 #9 [ffffb55e00c97ed0] worker_thread at ffffffff89b4c526
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/./include/linux/compiler.h: 339
#10 [ffffb55e00c97f10] kthread at ffffffff89b57041
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/kernel/kthread.c: 364
#11 [ffffb55e00c97f50] ret_from_fork at ffffffff8aa001ff
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/arch/x86/entry/entry_64.S: 330