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-rw-r--r--tools/lib/bpf/libbpf.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 0c794f7fc050..97073d649c1a 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -742,6 +742,24 @@ bpf_object__init_maps(struct bpf_object *obj)
return 0;
}
+static bool section_have_execinstr(struct bpf_object *obj, int idx)
+{
+ Elf_Scn *scn;
+ GElf_Shdr sh;
+
+ scn = elf_getscn(obj->efile.elf, idx);
+ if (!scn)
+ return false;
+
+ if (gelf_getshdr(scn, &sh) != &sh)
+ return false;
+
+ if (sh.sh_flags & SHF_EXECINSTR)
+ return true;
+
+ return false;
+}
+
static int bpf_object__elf_collect(struct bpf_object *obj)
{
Elf *elf = obj->efile.elf;
@@ -825,6 +843,14 @@ static int bpf_object__elf_collect(struct bpf_object *obj)
} else if (sh.sh_type == SHT_REL) {
void *reloc = obj->efile.reloc;
int nr_reloc = obj->efile.nr_reloc + 1;
+ int sec = sh.sh_info; /* points to other section */
+
+ /* Only do relo for section with exec instructions */
+ if (!section_have_execinstr(obj, sec)) {
+ pr_debug("skip relo %s(%d) for section(%d)\n",
+ name, idx, sec);
+ continue;
+ }
reloc = realloc(reloc,
sizeof(*obj->efile.reloc) * nr_reloc);

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