bpf: fix return in load_bpf_file
The function load_bpf_file ignores the return value of
load_and_attach(), so even if load_and_attach() returns an error,
load_bpf_file() will return 0.
Now, load_bpf_file() can call load_and_attach() multiple times and some
can succeed and some could fail. I think the correct behavor is to
return error on the first failed load_and_attach().
v2: Added missing SOB
Signed-off-by: Lawrence Brakmo <brakmo@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/samples/bpf/bpf_load.c b/samples/bpf/bpf_load.c
index a4be7cf..899f403 100644
--- a/samples/bpf/bpf_load.c
+++ b/samples/bpf/bpf_load.c
@@ -567,8 +567,12 @@ static int do_load_bpf_file(const char *path, fixup_map_cb fixup_map)
memcmp(shname, "perf_event", 10) == 0 ||
memcmp(shname, "socket", 6) == 0 ||
memcmp(shname, "cgroup/", 7) == 0 ||
- memcmp(shname, "sockops", 7) == 0)
- load_and_attach(shname, data->d_buf, data->d_size);
+ memcmp(shname, "sockops", 7) == 0) {
+ ret = load_and_attach(shname, data->d_buf,
+ data->d_size);
+ if (ret != 0)
+ goto done;
+ }
}
ret = 0;