libbpf: Fix error handling in btf__distill_base()

Coverity points out that after calling btf__new_empty_split() the wrong
value is checked for error.

Fixes: 58e185a0dc35 ("libbpf: Add btf__distill_base() creating split BTF with distilled base BTF")
Reported-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alan Maguire <alan.maguire@oracle.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20240629100058.2866763-1-alan.maguire@oracle.com

diff --git a/tools/lib/bpf/btf.c b/tools/lib/bpf/btf.c
index cd5dd66..32c00db 100644 (file)
--- a/tools/lib/bpf/btf.c
+++ b/tools/lib/bpf/btf.c
@@ -5431,7 +5431,7 @@ int btf__distill_base(const struct btf *src_btf, struct btf **new_base_btf,
         * BTF available.
         */
        new_split = btf__new_empty_split(new_base);
-       if (!new_split_btf) {
+       if (!new_split) {
                err = -errno;
                goto done;
        }