[DTrace-devel] Test that PASSes but should not

Kris Van Hees kris.van.hees at oracle.com
Thu Jul 24 21:00:27 UTC 2025


On Thu, Jul 24, 2025 at 04:54:19PM -0400, Eugene Loh wrote:
> On 7/24/25 14:57, Kris Van Hees wrote:
> 
> > On Thu, Jul 24, 2025 at 02:34:00PM -0400, Kris Van Hees wrote:
> > > On Thu, Jul 24, 2025 at 02:21:36PM -0400, Eugene Loh wrote:
> > > > And yet it has a .r file?
> > > Yes, the problem is less with the test and more with something going wrong with
> > > BTF handling causing the probe to not have a BTF ID and yet it is trying to
> > > load a program for it.  Attachment should not even be tried in that case.
> > > 
> > > Working out what is wrong and fixing.
> > Patch posted.  Was an issue with the BTF ID lookup code handling modules
> > whose BTF data didn't get initialized yet.
> 
> But how could it dump all that stuff and pass matching against a .r file?

No idea - my priority right now was fixing the issue that caused the BPF
verifier error report.  We can look at why it was deemed to PASS even with
that BPF verifer complaint - that is secondary.



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