bionic arm64 5.4.0-1077-azure cannot generate BTF

[brycekahle]

I'm recording this here for later investigation, but it seems this kernel has invalid DWARF data that pahole cannot generate BTF from:

[41] FWD (anon) Error emitting BTF type
Encountered error while encoding BTF.

Digging through the pahole/libbpf code, it seems a name is required for FWD types.

If you don't want me to record issues like this here, just let me know.

[brycekahle]

Happens for the same kernel in focal too

[rafaeldtinoco]

If you don't want me to record issues like this here, just let me know.

No, please, do open issues for broken kernels so others can find the issue if it occurs to them! Thanks!