fedora debug symbols BTF extraction: not implemented

[rafaeldtinoco]

After doing minor adjustments to btfhub code for fedor release, I'm getting:

2023/03/09 02:06:01 SKIP: 5.0.9-301.fc30.x86_64.btf.tar.xz exists
2023/03/09 02:06:01 DEBUG: end pkg kernel-debuginfo-5.0.9-301.fc30.x86_64 (1/1)
2023/03/09 02:06:01 DEBUG: start pkg kernel-debuginfo-4.13.9-300.fc27.x86_64 (1/2)
2023/03/09 02:06:01 SKIP: 4.13.9-300.fc27.x86_64.btf.tar.xz exists
2023/03/09 02:06:01 DEBUG: end pkg kernel-debuginfo-4.13.9-300.fc27.x86_64 (1/2)
2023/03/09 02:06:01 DEBUG: start pkg kernel-debuginfo-4.18.19-100.fc27.x86_64 (2/2)
2023/03/09 02:06:01 DEBUG: downloading kernel-debuginfo-4.18.19-100.fc27.x86_64
2023/03/09 02:06:28 DEBUG: finished downloading kernel-debuginfo-4.18.19-100.fc27.x86_64 in 26.532340464s
2023/03/09 02:06:28 DEBUG: extracting vmlinux from /home/rafaeldtinoco/work/ebpf/btfhub/archive/fedora/27/x86_64/4.18.19-100.fc27.x86_64.rpm
2023/03/09 02:06:28 ERROR: kernel-debuginfo-4.18.19-100.fc27.x86_64: extracting vmlinux from /home/rafaeldtinoco/work/ebpf/btfhub/archive/fedora/27/x86_64/vmlinux-4.18.19-100.fc27.x86_64: not implemented

2023/03/09 02:09:21 DEBUG: finished downloading kernel-debuginfo-4.11.12-100.fc24.x86_64 in 3m20.22025926s
2023/03/09 02:09:21 DEBUG: extracting vmlinux from /home/rafaeldtinoco/work/ebpf/btfhub/archive/fedora/24/x86_64/4.11.12-100.fc24.x86_64.rpm
2023/03/09 02:09:21 ERROR: kernel-debuginfo-4.11.12-100.fc24.x86_64: extracting vmlinux from /home/rafaeldtinoco/work/ebpf/btfhub/archive/fedora/24/x86_64/vmlinux-4.11.12-100.fc24.x86_64: not implemented
2023/03/09 02:09:56 DEBUG: finished downloading kernel-debuginfo-4.13.16-100.fc25.x86_64 in 3m54.863718228s
2023/03/09 02:09:56 DEBUG: extracting vmlinux from /home/rafaeldtinoco/work/ebpf/btfhub/archive/fedora/25/x86_64/4.13.16-100.fc25.x86_64.rpm
2023/03/09 02:09:56 ERROR: kernel-debuginfo-4.13.16-100.fc25.x86_64: extracting vmlinux from /home/rafaeldtinoco/work/ebpf/btfhub/archive/fedora/25/x86_64/vmlinux-4.13.16-100.fc25.x86_64: not implemented
2023/03/09 02:10:06 DEBUG: finished downloading kernel-debuginfo-4.16.11-100.fc26.x86_64 in 4m5.097627896s
2023/03/09 02:10:06 DEBUG: extracting vmlinux from /home/rafaeldtinoco/work/ebpf/btfhub/archive/fedora/26/x86_64/4.16.11-100.fc26.x86_64.rpm
2023/03/09 02:10:06 ERROR: kernel-debuginfo-4.16.11-100.fc26.x86_64: extracting vmlinux from /home/rafaeldtinoco/work/ebpf/btfhub/archive/fedora/26/x86_64/vmlinux-4.16.11-100.fc26.x86_64: not implemented

The fedora ExtractKernel() method is named Exctract() only.