Re: Is add-symbol-files broken on 64bit? (Need help!!!)

Michael Snyder
2008-07-20T23:37:50Z

I have a vague recollection to the effect that kernel modules
can be debugged in somewhat the same manner as shared libraries,
but a quick google search didn't turn up anything very useful.

Never done it myself, don't know anything more specific than that.

On Fri, 2008-07-18 at 01:02 -0700, Neo Jia wrote:
> Sorry, re-send with plain-text.
>
> Thanks,
> Neo
>
> On Fri, Jul 18, 2008 at 1:00 AM, Neo Jia <neojia@gmail.com> wrote:
> >
> > hi,
> >
> > I am using the gdb to debug Linux kernel module on x86-64 bit with a patched kernel (kgdb). Everything works fine for the kernel itself, I can break on any functions, and see the sources. But, I can't break on the symbols in the kernel module after it is loaded. I used the "add-symbol-files" to add the sections for that loadable module.
> >
> > The same setup works fine for 32bit and I even can see the symbols/sources by running gdb directly against the 64bit .ko file.
> >
> > Any suggestions? I am struggling with this question for a long time.
> >
> > Thanks,
> > Neo
> >
> > --
> > I would remember that if researchers were not ambitious
> > probably today we haven't the technology we are using!