Re: Summary of nightly tests 20060220

[William Cohen <wcohen at redhat dot com>]

Martin Hunt wrote:
> > FC5 i686 Linux 2.6.15-1.1948_FC5smp
> >
> > Stap translator summary of failed tests
> > buildok-seven.stp:
> > 	Unable to find identifier $type in function find_pid
> > 	Unable to find identifier $task in function detach_pid
>
>
> There don't appear to be significant changes in the sources to account
> for this. That makes it a likely gcc bug. 
>
> Can someone write up the proper procedure to use to report these? I
> think it should be on the web page.
>
> Martin

The problem appears only in certain kernels. Possible causes for this 
type of problem:

1) source code has changed so those variable/arguments don't exist
2) gcc tool chain not generating the proper debug information
3) stap is not finding them in the debugging information

Are there other possibilities or should this be finer grain resolution, 
e.g. elfutils vs stap translator? The procedure should make it clear 
which of the alternatives can be ruled out. Ideally, would like it to 
point to to which one is causing the problem.

-Will