Re: Break point not hit while debugging linux kernel with kgdb

[Sergei Shtylyov]

Hello.

On 06/09/2012 10:23 PM, Anil Nair wrote:

> > Hi,

> > I tried to debug the linux kernel with kgdb (over serial port).

> The Maintainers would never recommend the use of a debugger, it
> results in poorly fixed patches.

   Yeah, KGDB was accepted into kernel exactly for more "poorly fixed patches" 
to appear. :-)

> > I have
> > configured the host and target machines and I am able to connect, step
> > in the kernel code. In gdb I gave "break usb_register_dev" and "break
> > usb_deregister_dev" and continued the execution (continue in gdb).
> > Once the desktop is up, I connected a USB device (first tried with USB
> > keyboard). Break point was not hit. I tried some more functions and
> > break points are never hit. What should I do for it? Am I missing
> > something?

> You have to use gdbserver

   gdbserver is only good for debugging the applications.

WBR, Sergei
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