Pulling the latest changes of libbpf and compiling my application with it, I see the following error: ../libbpf/src//root/usr/include/bpf/bpf_helpers.h:99:10: error: unknown register name 'r0' in asm : "r0", "r1", "r2", "r3", "r4", "r5"); The commit which introduced this change is: 80c7838600d39891f274e2f7508b95a75e4227c1 I'm not sure if I'm doing something wrong (missing include?), or this is a genuine error Yaniv