[Bug libdw/22452] Failed to obtain CFI data for a OP_call_frame_CFA when looking for func entrypoc in an s390 kernel module

["brueckner at linux dot vnet.ibm.com" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=22452

--- Comment #3 from H. Brueckner <brueckner at linux dot vnet.ibm.com> ---
(In reply to Mark Wielaard from comment #1)

> One tricky issue here is the fact that kernel modules are ET_REL files
> that still need relocations applied (you can see there is also a
> .rela.eh_frame section). libdwfl can do simple relocations, but might not
> know about all relocation types used in an .eh_frame section (I haven't
> checked yet).

At least, I checked the reloc types for s390 (backends/s390_reloc.def) and the
list is complete wrt kernel modules.  Not sure if there is further work to be
done for non-simple relocations.

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