[PATCH bpf-next 1/4] libbpf: fix potential NULL dereference when parsing ELF

[Andrii Nakryiko <andrii@xxxxxxxxxx>]

Fix if condition filtering empty ELF sections to prevent NULL
dereference.

Fixes: 47ea7417b074 ("libbpf: Skip empty sections in bpf_object__init_global_data_maps")
Signed-off-by: Andrii Nakryiko <andrii@xxxxxxxxxx>
---
 tools/lib/bpf/libbpf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index aa05a99b913d..5f0281e61437 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -1646,7 +1646,7 @@ static int bpf_object__init_global_data_maps(struct bpf_object *obj)
 		sec_desc = &obj->efile.secs[sec_idx];
 
 		/* Skip recognized sections with size 0. */
-		if (sec_desc->data && sec_desc->data->d_size == 0)
+		if (!sec_desc->data || sec_desc->data->d_size == 0)
 			continue;
 
 		switch (sec_desc->sec_type) {
-- 
2.30.2