PID: 37     TASK: ffff995801348000  CPU: 3   COMMAND: "kworker/u8:2"
 #0 [ffffbb3580da3c78] machine_kexec at ffffffff8f2850a3
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/arch/x86/kernel/machine_kexec_64.c: 417
 #1 [ffffbb3580da3cd0] __crash_kexec at ffffffff8f43e5ba
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/kernel/kexec_core.c: 955
 #2 [ffffbb3580da3d90] panic at ffffffff8f3199d8
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/kernel/panic.c: 230
 #3 [ffffbb3580da3e20] tgt_client_free at ffffffffc0dc0615 [ptlrpc]
    /home/green/git/lustre-release/lustre/ptlrpc/../../lustre/target/tgt_lastrcvd.c: 457
 #4 [ffffbb3580da3e50] mdt_destroy_export at ffffffffc18c7d96 [mdt]
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/include/linux/compiler.h: 339
 #5 [ffffbb3580da3e60] class_export_destroy at ffffffffc08ef224 [obdclass]
    /home/green/git/lustre-release/lustre/include/obd_class.h: 1010
 #6 [ffffbb3580da3e80] obd_zombie_exp_cull at ffffffffc08ef866 [obdclass]
    /home/green/git/lustre-release/lustre/obdclass/genops.c: 1014
 #7 [ffffbb3580da3e88] process_one_work at ffffffff8f34b8e8
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/kernel/workqueue.c: 2384
 #8 [ffffbb3580da3ed0] worker_thread at ffffffff8f34c526
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/./include/linux/compiler.h: 339
 #9 [ffffbb3580da3f10] kthread at ffffffff8f357041
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/kernel/kthread.c: 364
#10 [ffffbb3580da3f50] ret_from_fork at ffffffff902001ff
    /home/green/bk/linux-4.18.0-553.58.1.el8_10-debug/arch/x86/entry/entry_64.S: 330