PID: 36     TASK: ffffa0284134a7c0  CPU: 0   COMMAND: "kworker/u8:1"
 #0 [ffffbc8540d9bc78] machine_kexec at ffffffff8da850a3
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/arch/x86/kernel/machine_kexec_64.c: 417
 #1 [ffffbc8540d9bcd0] __crash_kexec at ffffffff8dc3e5ba
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/kernel/kexec_core.c: 955
 #2 [ffffbc8540d9bd90] panic at ffffffff8db199d8
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/kernel/panic.c: 230
 #3 [ffffbc8540d9be20] tgt_client_free at ffffffffc16ed5e5 [ptlrpc]
    /home/green/git/lustre-release/lustre/ptlrpc/../../lustre/target/tgt_lastrcvd.c: 457
 #4 [ffffbc8540d9be50] mdt_destroy_export at ffffffffc201dd96 [mdt]
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/include/linux/compiler.h: 339
 #5 [ffffbc8540d9be60] class_export_destroy at ffffffffc121e924 [obdclass]
    /home/green/git/lustre-release/lustre/include/obd_class.h: 1010
 #6 [ffffbc8540d9be80] obd_zombie_exp_cull at ffffffffc121ef66 [obdclass]
    /home/green/git/lustre-release/lustre/obdclass/genops.c: 1014
 #7 [ffffbc8540d9be88] process_one_work at ffffffff8db4b8e8
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/kernel/workqueue.c: 2384
 #8 [ffffbc8540d9bed0] worker_thread at ffffffff8db4c526
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/./include/linux/compiler.h: 339
 #9 [ffffbc8540d9bf10] kthread at ffffffff8db57041
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/kernel/kthread.c: 364
#10 [ffffbc8540d9bf50] ret_from_fork at ffffffff8ea001ff
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/arch/x86/entry/entry_64.S: 330