rpi5-kernel: can't run eBPF tools due to missing BTF debug info

[kdrag0n]

Is this a new report?

Yes

System Info

Void 6.6.42_1 aarch64 Unknown notuptodate rrnFFF

Package(s) Affected

rpi5-kernel-6.6.42_1

Does a report exist for this bug with the project's home (upstream) and/or another distro?

No response

Expected behaviour

execsnoop and other eBPF tracing tools from bcc-tools run successfully.

Actual behaviour

execsnoop doesn't start because the kernel is missing BTF debug info, which is required for eBPF CO-RE:

libbpf: kernel BTF is missing at '/sys/kernel/btf/vmlinux', was CONFIG_DEBUG_INFO_BTF enabled?
libbpf: failed to find valid kernel BTF
modprobe: FATAL: Module kheaders not found in directory /lib/modules/6.6.42_1
Unable to find kernel headers. Try rebuilding kernel with CONFIG_IKHEADERS=m (module) or installing the kernel development package for your running kernel version.
chdir(/lib/modules/6.6.42_1/build): No such file or directory
Traceback (most recent call last):
  File "/usr/bin/execsnoop", line 272, in <module>
    b = BPF(text=bpf_text)
        ^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/site-packages/bcc/__init__.py", line 480, in __init__
    raise Exception("Failed to compile BPF module %s" % (src_file or "<text>"))
Exception: Failed to compile BPF module <text>

Steps to reproduce

1. xbps-install bcc-tools
2. execsnoop