bpf, btf: Fix return value of register_btf_id_dtor_kfuncs

The same as __register_btf_kfunc_id_set(), to let the modules with
stripped btf section loaded, this patch changes the return value of
register_btf_id_dtor_kfuncs() too from -ENOENT to 0 when btf is NULL.

Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
Link: https://lore.kernel.org/r/eab65586d7fb0e72f2707d3747c7d4a5d60c823f.1707373307.git.tanggeliang@kylinos.cn
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>

diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
index f7725cb6e564bff3768b87f717e6bcd81a08f9c9..16eb937eca462d66150fa11c3cbb0efa7f851b35 100644 (file)
--- a/kernel/bpf/btf.c
+++ b/kernel/bpf/btf.c
@@ -8219,10 +8219,8 @@ int register_btf_id_dtor_kfuncs(const struct btf_id_dtor_kfunc *dtors, u32 add_c
                        pr_err("missing vmlinux BTF, cannot register dtor kfuncs\n");
                        return -ENOENT;
                }
-               if (owner && IS_ENABLED(CONFIG_DEBUG_INFO_BTF_MODULES)) {
-                       pr_err("missing module BTF, cannot register dtor kfuncs\n");
-                       return -ENOENT;
-               }
+               if (owner && IS_ENABLED(CONFIG_DEBUG_INFO_BTF_MODULES))
+                       pr_warn("missing module BTF, cannot register dtor kfuncs\n");
                return 0;
        }
        if (IS_ERR(btf))