Debugging Beyond Visual Studio – WinDbg

时间:2022-05-23 00:57:44
Getting started with WinDbg:

1. Download the Debugging Tools for Windows from the Microsoft website

We recommend you install WinDbg Preview as it offers more modern visuals, faster windows, a full-fledged scripting experience, built with extensible debugger data model front and center.

Debugging Beyond Visual Studio – WinDbg

2. When clicking Download from the Microsoft Store, a prompt will appear, select “Get”

Debugging Beyond Visual Studio – WinDbg

3. Windows will start the download and installation process. A prompt will confirm installation status.

Debugging Beyond Visual Studio – WinDbg

4. Select to “Pin to Start,” close windows by clicking “X” on the top right of Window.

Debugging Beyond Visual Studio – WinDbg

5. Set the Windows Symbol Server path in File > Settings > Symbol path (see example below)

Debugging Beyond Visual Studio – WinDbg

6. Go to your Start menu, select the WinDbg Preview to launch the application

7. The WinDbg initial view

Debugging Beyond Visual Studio – WinDbg

8. What is the difference between User Mode-Debugging and Kernel-Mode Debugging?

In User mode debugging, the code normally delegates to the system API’s to access hardware or memory. You typically are debugging a single executable, which is separated from other executables by the OS. Typical scenario is to isolate memory or application hang issues on Win32 desktop applications. In User mode, the debugger is running on the same system as the code being debugged.

In Kernel mode debugging, the code normally has unrestricted access to the hardware. Typical scenario is driver code developed for hardware devices. When debugging in Kernel mode you typically use two different systems. One system runs the code that is being debugged, and another runs the debugger, usually connected with a cable. Click here for additional information on Kernel mode debugging.

9. Advantages of WinDbg:

  • Extensive numbers of commands and extensions.
  • A useful tool to help understand OS and software running on the system being debugged.
  • Lightweight and can be used in production as it has no dependency, only require an executable (.exe) to run.
  • A useful tool to help isolate User or Kernel mode code that's difficult to troubleshoot on Windows.

10. Common User mode debugging commands:

.hh (Open WinDbg’s help)

Debugging Beyond Visual Studio – WinDbg

Vertaget (Get the version of the target computer)

Debugging Beyond Visual Studio – WinDbg

Symbol Path (Display or set symbol search path)

Debugging Beyond Visual Studio – WinDbg

Version (Dump version info of debugger and loaded extension DLLs)

Debugging Beyond Visual Studio – WinDbg

!ext.help(General extensions)

Debugging Beyond Visual Studio – WinDbg

!analyze -v (Display information about the current exception or bug check; verbose)

Debugging Beyond Visual Studio – WinDbg

11. Common Kernel mode debugging commands:

!analyze

Debugging Beyond Visual Studio – WinDbg

!error (plus error code, e.g. “!error c0000005)

Debugging Beyond Visual Studio – WinDbg

12. Useful links:

Debugging Using WinDbg Preview:

https://docs.microsoft.com/en-us/windows-hardware/drivers/debugger/debugging-using-windbg-preview

Getting Started with WinDbg Microsoft Docs:

https://docs.microsoft.com/en-us/windows-hardware/drivers/debugger/getting-started-with-windbg

Common WinDbg Commands:

http://windbg.info/doc/1-common-cmds.html

Elementary User-Mode Debugging:

https://microsoft.sharepoint.com/teams/bidpwiki/Pages1/Elementary%20User-Mode%20Debug.aspx