[PATCH bpf] tools: bpf: handle NULL return in bpf_prog_load_xattr()

[Jakub Kicinski]

bpf_object__open() can return error pointer as well as NULL.
Fix error handling in bpf_prog_load_xattr() (and indirectly
bpf_prog_load()).

Fixes: 6f6d33f3b3d0 ("bpf: selftests add sockmap tests")
Signed-off-by: Jakub Kicinski <jakub.kicin...@netronome.com>
Reviewed-by: Quentin Monnet <quentin.mon...@netronome.com>
---
 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 5922443063f0..0f9f06df49bc 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -2035,7 +2035,7 @@ int bpf_prog_load_xattr(const struct bpf_prog_load_attr 
*attr,
                return -EINVAL;
 
        obj = bpf_object__open(attr->file);
-       if (IS_ERR(obj))
+       if (IS_ERR_OR_NULL(obj))
                return -ENOENT;
 
        bpf_object__for_each_program(prog, obj) {
-- 
2.17.0