Fix the issue accidentally discovered during libbpf USDT support testing. Libbpf overzealously complained about CO-RE relocations belonging to the code of a __weak subprog that got overriden by another instance of that function. Fix the issue fixed, return back to __weak __hidden annotation for USDT BPF-side APIs. And add CO-RE relos to linked_funcs selftest to ensure such combo keeps working going forward. Andrii Nakryiko (3): libbpf: don't error out on CO-RE relos for overriden weak subprogs libbpf: use weak hidden modifier for USDT BPF-side API functions selftests/bpf: add CO-RE relos into linked_funcs selftests tools/lib/bpf/libbpf.c | 15 +++++++++++---- tools/lib/bpf/usdt.bpf.h | 6 +++--- tools/testing/selftests/bpf/progs/linked_funcs1.c | 8 ++++++++ tools/testing/selftests/bpf/progs/linked_funcs2.c | 8 ++++++++ 4 files changed, 30 insertions(+), 7 deletions(-) -- 2.30.2
