diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 6200a6fe10e3b0eb9b0027c086a3d1f0cdaea81b..f9821a3374e9dd4b81ed0f7cfe8c436d7a58b4c5 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -4338,6 +4338,11 @@ register_ftrace_function_probe(char *glob, struct trace_array *tr,
 	old_hash = *orig_hash;
 	hash = alloc_and_copy_ftrace_hash(FTRACE_HASH_DEFAULT_BITS, old_hash);
 
+	if (!hash) {
+		ret = -ENOMEM;
+		goto out;
+	}
+
 	ret = ftrace_match_records(hash, glob, strlen(glob));
 
 	/* Nothing found? */