[update] 更新了udb.ko, 好了。应该是随机带的ndb的bug。

depmod也运行了。 用了网站上提供的nbd代码，重新编译个ndb.ko来替换，效果更差。 lsmod显示ko已经加载了。但是用nanodebug，能断住，但连ndb都连不上。

Nano Debugger (NDB) 1.0.258
Starting...
Starting KD session type=usb3,proto=dcid,ipc=open,opt=rxs

Microsoft (R) Windows Debugger Version 10.0.17763.132 AMD64
Copyright (c) Microsoft Corporation. All rights reserved.

All logic CPU threads detected: 1000 1001 1002 1003
Switched to processor 0, its device id is 0x1000
Kernel Debugger connection established
Failed to find NDB marker in target memory after scanning 5 pages from base ffffffffff5fe000
ReadSysPara failed with 0x80004005.
If you are debugging Linux kernel, please make sure ndb.ko is loaded.
It can be loaded by: sudo modprobe ndb
Debug API version does not match system version
64-bit machine not using 64-bit API
Debugger data list address is NULL
Connected to eXDI Device 0 x64 target at (Fri Jun 26 16:07:59.989 2020 (UTC + 8:00)), ptr64 TRUE
Symbol search path is: srv*
Executable search path is:
Unable to create shared user data image
Failed to find NDB marker in target memory after scanning 5 pages from base ffffffffff5fe000
ReadSysPara failed with 0x80004005.
If you are debugging Linux kernel, please make sure ndb.ko is loaded.
It can be loaded by: sudo modprobe ndb
eXDI Device Kernel Version 0 UP Free x64
Machine Name:
Primary image base = 0x00000000`00000000 Loaded module list = 0x00000000`00000000
System Uptime: not available
Failed to find NDB marker in target memory after scanning 5 pages from base ffffffffff5fe000
ReadSysPara failed with 0x80004005.
If you are debugging Linux kernel, please make sure ndb.ko is loaded.
It can be loaded by: sudo modprobe ndb
ffffffff`81a36897 65488b0425005c0100 mov rax,qword ptr gs:[15C00h]
lm
start end module name
g
Switched to processor 0, its device id is 0x1000
Failed to find NDB marker in target memory after scanning 5 pages from base ffffffffff5fe000
ReadSysPara failed with 0x80004005.
If you are debugging Linux kernel, please make sure ndb.ko is loaded.
It can be loaded by: sudo modprobe ndb
ffffffff`81a36897 65488b0425005c0100 mov rax,qword ptr gs:[15C00h]
kv
Failed to find NDB marker in target memory after scanning 5 pages from base ffffffffff5fe000
ReadSysPara failed with 0x80004005.
If you are debugging Linux kernel, please make sure ndb.ko is loaded.
It can be loaded by: sudo modprobe ndb
Could not fetch any stack frames
k
Failed to find NDB marker in target memory after scanning 5 pages from base ffffffffff5fe000
ReadSysPara failed with 0x80004005.
If you are debugging Linux kernel, please make sure ndb.ko is loaded.
It can be loaded by: sudo modprobe ndb
Could not fetch any stack frames
k
Failed to find NDB marker in target memory after scanning 5 pages from base ffffffffff5fe000
ReadSysPara failed with 0x80004005.
If you are debugging Linux kernel, please make sure ndb.ko is loaded.
It can be loaded by: sudo modprobe ndb
Could not fetch any stack frames
kv
Failed to find NDB marker in target memory after scanning 5 pages from base ffffffffff5fe000
ReadSysPara failed with 0x80004005.
If you are debugging Linux kernel, please make sure ndb.ko is loaded.
It can be loaded by: sudo modprobe ndb
Could not fetch any stack frames
g

看了下kernel log，有错

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