Debugging Windows Kernel with two VirtualBox hosts

Question

1.9k views Asked by daisy At 03 September 2013 at 10:45

I'm running Linux, and I have two Windows 7 machine setup in VirtualBox.

Now I'm trying to use the first machine to debug the second one.

So I configured the same host pipe for the two machines,

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In the debugger machine, I launches windbg that waiting for inputs on COM1:

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And on the debugee machine, I enabled debug mode and reboot,

C:\Users\XX>bcdedit /dbgsettings
debugtype               Serial
debugport               1
baudrate                115200

But they don't seem to know each other, just blindly waiting.

Anything wrong? Or was it just impossible to achieve.

There are 1 answers

**Yan Vugenfirer** · Accepted Answer · 2013-09-03 21:38:52

Uncheck "Create Pipe" on one of the VMs (for best practice it should be a debugger target). For serial port redirection one VM acts as a server (the one that creates the pipe) and other acts as a client.
Use some terminal application to check that you can pass the data between the VMs using com port. And only then setup kernel debugger.