PID: 38     TASK: ffff926481384f80  CPU: 3   COMMAND: "kworker/u8:3"
 #0 [ffffbc3300dabc80] machine_kexec at ffffffffb14850a3
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/arch/x86/kernel/machine_kexec_64.c: 417
 #1 [ffffbc3300dabcd8] __crash_kexec at ffffffffb163e5ba
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/kernel/kexec_core.c: 955
 #2 [ffffbc3300dabd98] panic at ffffffffb15199d8
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/kernel/panic.c: 230
 #3 [ffffbc3300dabe18] lbug_with_loc.cold.4 at ffffffffc0780d24 [libcfs]
    /home/green/git/lustre-release/lnet/libcfs/debug.c: 530
 #4 [ffffbc3300dabe20] target_destroy_export at ffffffffc174eb5e [ptlrpc]
    /home/green/git/lustre-release/lustre/ptlrpc/../ldlm/ldlm_lib.c: 1800
 #5 [ffffbc3300dabe40] ofd_destroy_export at ffffffffc2478d1b [ofd]
    /home/green/git/lustre-release/include/uapi/linux/lustre/lustre_user.h: 1465
 #6 [ffffbc3300dabe60] class_export_destroy at ffffffffc12a6394 [obdclass]
    /home/green/git/lustre-release/lustre/include/obd_class.h: 1027
 #7 [ffffbc3300dabe80] obd_zombie_exp_cull at ffffffffc12a6996 [obdclass]
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/./include/linux/compiler.h: 339
 #8 [ffffbc3300dabe88] process_one_work at ffffffffb154b8e8
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/kernel/workqueue.c: 2384
 #9 [ffffbc3300dabed0] worker_thread at ffffffffb154c526
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/./include/linux/compiler.h: 339
#10 [ffffbc3300dabf10] kthread at ffffffffb1557041
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/kernel/kthread.c: 364
#11 [ffffbc3300dabf50] ret_from_fork at ffffffffb24001ff
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/arch/x86/entry/entry_64.S: 330