Re: can't see kernel module (e.g. e1000.ko) symbols in opreport even with --image-path set right

[William C. <wc...@re...>]

david hughes wrote:
> I'm using oprofile with FC4 (2.6.17-1.2141FC4smp) and having trouble
> profiling kernel modules.
> 
> It seems like all the samples within the module are assigned to just
> one function (usually the module initialization function), even when I
> use --image-path to point oprofile to the module directory (if I don't
> do this I get (no symbols) which makes sense).  vmlinux symbols
> samples are reported and appear to be correct.
> 
> This happens with my own kernel module, as well as with others like
> the standard e1000 module.
> 
> I get the same behavior with the oprofile that comes as part of the
> FC4 distribution (0.8) and with version 0.9.2  compiled from source.
> 
> There must be something I'm doing wrong.  Any pointers would be much
> appreciated.
> 
> Thanks, David

This sounds like a problem reported earlier by John Levon. There is a bugzilla 
entry for it, "The kernel modules have bogus addresses for text (code) section".

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=218563

-Will