[PATCH bpf-next] libbpf: fix memory leak in attach_tp for target-less tracepoint program

[Andrii Nakryiko <andrii@kernel.org>]

Fix sec_name memory leak if user defines target-less SEC("tp").

Fixes: 9af8efc45eb1 ("libbpf: Allow "incomplete" basic tracing SEC() definitions")
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
---
 tools/lib/bpf/libbpf.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 9aae886cbabf..ef7f302e542f 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -11592,16 +11592,16 @@ static int attach_tp(const struct bpf_program *prog, long cookie, struct bpf_lin
 {
 	char *sec_name, *tp_cat, *tp_name;
 
-	sec_name = strdup(prog->sec_name);
-	if (!sec_name)
-		return -ENOMEM;
-
 	*link = NULL;
 
 	/* no auto-attach for SEC("tp") or SEC("tracepoint") */
 	if (strcmp(prog->sec_name, "tp") == 0 || strcmp(prog->sec_name, "tracepoint") == 0)
 		return 0;
 
+	sec_name = strdup(prog->sec_name);
+	if (!sec_name)
+		return -ENOMEM;
+
 	/* extract "tp/<category>/<name>" or "tracepoint/<category>/<name>" */
 	if (str_has_pfx(prog->sec_name, "tp/"))
 		tp_cat = sec_name + sizeof("tp/") - 1;
-- 
2.30.2