perf / DWARF bug - is this something to do with the new DWARF format?

[Richard W.M. Jones]

https://bugzilla.redhat.com/show_bug.cgi?id=1963865

I can't get stack traces using --call-graph=dwarf information working
in Rawhide at the moment.  It seems as if perf doesn't understand the
new debuginfo information.

I find this whole area to be incredibly confusing and opaque.  For
example, how do I find out what dwarf version was used to generate the
debuginfo and what version perf understands?

But my main question is: Is there some simple change to perf that is
needed to fix this?  Or is it user error?

Rich.

[Patrick O'Callaghan]

On Mon, 2021-05-24 at 10:32 +0100, Richard W.M. Jones wrote:
> https://bugzilla.redhat.com/show_bug.cgi?id=1963865
>
> I can't get stack traces using --call-graph=dwarf information working
> in Rawhide at the moment.  It seems as if perf doesn't understand the
> new debuginfo information.
>
> I find this whole area to be incredibly confusing and opaque.  For
> example, how do I find out what dwarf version was used to generate
> the
> debuginfo and what version perf understands?
>
> But my main question is: Is there some simple change to perf that is
> needed to fix this?  Or is it user error?

Surely a question for the Test list?

poc