PID: 38     TASK: ffff9af4c13827c0  CPU: 1   COMMAND: "kworker/u8:3"
 #0 [ffffb7eac0dabc80] machine_kexec at ffffffff8c8850a3
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/arch/x86/kernel/machine_kexec_64.c: 417
 #1 [ffffb7eac0dabcd8] __crash_kexec at ffffffff8ca3e5ba
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/kernel/kexec_core.c: 955
 #2 [ffffb7eac0dabd98] panic at ffffffff8c9199d8
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/kernel/panic.c: 230
 #3 [ffffb7eac0dabe18] lbug_with_loc.cold.4 at ffffffffc0801d24 [libcfs]
    /home/green/git/lustre-release/lnet/libcfs/debug.c: 530
 #4 [ffffb7eac0dabe20] target_destroy_export at ffffffffc0ea0b5e [ptlrpc]
    /home/green/git/lustre-release/lustre/ptlrpc/../ldlm/ldlm_lib.c: 1800
 #5 [ffffb7eac0dabe40] ofd_destroy_export at ffffffffc1d94d1b [ofd]
    /home/green/git/lustre-release/include/uapi/linux/lustre/lustre_user.h: 1465
 #6 [ffffb7eac0dabe60] class_export_destroy at ffffffffc09f8394 [obdclass]
    /home/green/git/lustre-release/lustre/include/obd_class.h: 1027
 #7 [ffffb7eac0dabe80] obd_zombie_exp_cull at ffffffffc09f8996 [obdclass]
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/./include/linux/compiler.h: 339
 #8 [ffffb7eac0dabe88] process_one_work at ffffffff8c94b8e8
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/kernel/workqueue.c: 2384
 #9 [ffffb7eac0dabed0] worker_thread at ffffffff8c94c526
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/./include/linux/compiler.h: 339
#10 [ffffb7eac0dabf10] kthread at ffffffff8c957041
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/kernel/kthread.c: 364
#11 [ffffb7eac0dabf50] ret_from_fork at ffffffff8d8001ff
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/arch/x86/entry/entry_64.S: 330