tracing/dynevent: Fix a memory leak in an error handling path

We must free 'argv' before returning, as already done in all the other
paths of this function.

Link: https://lkml.kernel.org/r/21e3594ccd7fc88c5c162c98450409190f304327.1618136448.git.christophe.jaillet@wanadoo.fr
Fixes: a6294f64c964 ("tracing/dynevent: Delegate parsing to create function")
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

diff --git a/kernel/trace/trace_dynevent.c b/kernel/trace/trace_dynevent.c
index dc971a68dda4e59913c3af213b2dd4e717b84f99..e57cc0870892cea04cbc939e387056ed8ed96ef2 100644 (file)
--- a/kernel/trace/trace_dynevent.c
+++ b/kernel/trace/trace_dynevent.c
@@ -63,8 +63,10 @@ int dyn_event_release(const char *raw_command, struct dyn_event_operations *type
                event = p + 1;
                *p = '\0';
        }
-       if (event[0] == '\0')
-               return -EINVAL;
+       if (event[0] == '\0') {
+               ret = -EINVAL;
+               goto out;
+       }
 
        mutex_lock(&event_mutex);
        for_each_dyn_event_safe(pos, n) {