bpf: Print section name when hitting non ld64 issue

It's useful to be able to tell which section is being processed in the
ELF when this error is triggered, so print that detail.

Signed-off-by: Joe Stringer <joe@wand.net.nz>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>

diff --git a/lib/bpf.c b/lib/bpf.c
index 2db151e4dd3c4cc23a09a8e1c90c960337b9b77f..c38d92d877594c3fd01e5665bf2143a04558a811 100644 (file)
--- a/lib/bpf.c
+++ b/lib/bpf.c
@@ -2039,6 +2039,7 @@ static int bpf_apply_relo_data(struct bpf_elf_ctx *ctx,
                    insns[ioff].code != (BPF_LD | BPF_IMM | BPF_DW)) {
                        fprintf(stderr, "ELF contains relo data for non ld64 instruction at offset %u! Compiler bug?!\n",
                                ioff);
+                       fprintf(stderr, " - Current section: %s\n", data_relo->sec_name);
                        if (ioff < num_insns &&
                            insns[ioff].code == (BPF_JMP | BPF_CALL))
                                fprintf(stderr, " - Try to annotate functions with always_inline attribute!\n");