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| author |   Andrii Nakryiko <andrii@kernel.org> | 2022-04-08 11:14:23 -0700 |
|---|---|---|
| committer |   Daniel Borkmann <daniel@iogearbox.net> | 2022-04-08 22:24:15 +0200 |
| commit | e89d57d938c8fa80c457982154ed6110804814fe (patch) | |
| tree | a5a6b8b62931835354fc3ad34e1348a35895e5e5 /tools/testing/selftests/bpf/prog_tests | |
| parent | samples, bpf: Move routes monitor in xdp_router_ipv4 in a dedicated thread (diff) | |
| download | wireguard-linux-e89d57d938c8fa80c457982154ed6110804814fe.tar.xz wireguard-linux-e89d57d938c8fa80c457982154ed6110804814fe.zip | |
libbpf: Don't error out on CO-RE relos for overriden weak subprogs
During BPF static linking, all the ELF relocations and .BTF.ext
information (including CO-RE relocations) are preserved for __weak
subprograms that were logically overriden by either previous weak
subprogram instance or by corresponding "strong" (non-weak) subprogram.
This is just how native user-space linkers work, nothing new.
But libbpf is over-zealous when processing CO-RE relocation to error out
when CO-RE relocation belonging to such eliminated weak subprogram is
encountered. Instead of erroring out on this expected situation, log
debug-level message and skip the relocation.
Fixes: db2b8b06423c ("libbpf: Support CO-RE relocations for multi-prog sections")
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20220408181425.2287230-2-andrii@kernel.org
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests')
0 files changed, 0 insertions, 0 deletions