diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 55cc0e67a02e..f252fb71a933 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -5108,6 +5108,9 @@ __ftrace_match_addr(struct ftrace_hash *hash, unsigned long ip, int remove) return -ENOENT; free_hash_entry(hash, entry); return 0; + } else if (__ftrace_lookup_ip(hash, ip) != NULL) { + /* Already exists */ + return 0; } return add_hash_entry(hash, ip);