libbpf: fix error code returned on corrupted ELF

All of libbpf errors are negative, except this one. Fix it.

Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 60ec9694923a7a2dc1f6d3d9f500a1820f46a907..9f421206d3e7bf0471d80e8df16f1663f3527a7e 100644 (file)
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -1221,7 +1221,7 @@ static int bpf_object__elf_collect(struct bpf_object *obj, int flags)
 
        if (!obj->efile.strtabidx || obj->efile.strtabidx >= idx) {
                pr_warning("Corrupted ELF file: index of strtab invalid\n");
-               return LIBBPF_ERRNO__FORMAT;
+               return -LIBBPF_ERRNO__FORMAT;
        }
        if (btf_data) {
                obj->btf = btf__new(btf_data->d_buf, btf_data->d_size);