Re: error to run systemtap in an ARM platform

[Da Zheng <zhengda1936 at gmail dot com>]

On 07/25/11 10:16, William Cohen wrote:
> On 07/23/2011 06:55 PM, Zheng Da wrote:
> > Hello,
> >
> > I'm still trying to fix the problem.
> > semantic error: failed to retrieve return value location for vfs_write
> > (/build/tegra2_seaboard/tmp/portage/sys-kernel/chromeos-kernel-9999/work/chromeos-kernel-9999/fs/read_write.c):
> > identifier '$return' at read-write.stp:7:6
> >          source: 	if ($return>  0) {
> >                  	    ^
> > I'm pretty sure CONFIG_DEBUG_INFO is enabled, and in
> > /build/tegra2_seaboard/tmp/portage/sys-kernel/chromeos-kernel-9999/work/chromeos-kernel-9999/build/tegra2_seaboard,
> > a binary file vmlinux is 57MB. It should contain the debug information.
> >
> > (cr) zhengda@zdpc
> > /build/tegra2_seaboard/tmp/portage/sys-kernel/chromeos-kernel-9999/work/chromeos-k
> > ernel-9999/build/tegra2_seaboard $ ls -l vmlinux
> > -rwxr-xr-x 1 zhengda portage 59419805 Jul 22 20:55 vmlinux
> >
> > How does systemtap use the debug information? When it compiles the
> > script, does it need to read the debug information from the kernel
> > image? or it needs to read the .obj files of the kernel?
> > Any ideas how to debug the problem?
> >
> > Thanks,
> > Da
> I wonder if this might be Bug 440059 - Missing return value locations support for ARM in elfutils backend
>
> https://bugzilla.redhat.com/show_bug.cgi?id=440059
>
> How old is the version of elfutils you are using?
Problem is solved. I used a latest version of elfutils, and systemtap 
can compile the script now.

Thanks,
Da