Hi When I enable CONFIG_DEBUG_INFO_BTF I get the following error in the BTFIDS stage FAILED unresolved symbol udp6_sock I cross compile for arm64. My .config is attached. I managed to reproduce the problem on v5.9 and v5.10. Plus 5.11-rc1. Have you seen this before? I couldn't find a specific report about this problem. Let me know if you need more info. Thanks -- Qais Yousef