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

Neo Jia
2008-07-21T01:53:56Z

The problem is that I can use the same way to debug 32bit env. Also, I
can see the debugging symbol and line numbers from the ko file.

Thanks,
Neo

On Sun, Jul 20, 2008 at 4:37 PM, Michael Snyder <msnyder@specifix.com> wrote:
> 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!
>>
>>
>>
>> --
>> I would remember that if researchers were not ambitious
>> probably today we haven't the technology we are using!