Re: [PATCH 0/2] Expose kallsyms data in vmcoreinfo note

Andrew Morton
2022-06-13T22:14:27Z

On Mon, 13 Jun 2022 14:59:44 -0700 Stephen Brennan <stephen.s.brennan@oracle.com> wrote:

> >> Related discussion around the BTF side of this:
> >> https://lore.kernel.org/bpf/586a6288-704a-f7a7-b256-e18a675927df@oracle.com/T/#u
> >>
> >> Some work-in-progress branches using this feature:
> >> https://github.com/brenns10/dwarves/tree/remove_percpu_restriction_1
> >> https://github.com/brenns10/drgn/tree/kallsyms_plus_btf
> >
> > What's the story on using gdb with this?
>
> There is no story with GDB as of yet. I was already familiar with the
> code of drgn when I started down this path, so that's what I used. Drgn
> happens to have a very extensible type system which made it quite simple
> to do. I'd love to see support for doing this with GDB, and might look
> into the feasibility of it, but it's not on my roadmap right now.

Naive question - could some standalone tool take this kallsyms-based
info, combine it with a core image and create a minimally-dwarfified
file which any debugger can munch on?