fix NULL deref in jack driver

derselbst · derselbst · commit 7e627c575c61 · 2018-07-11T21:07:37.000+02:00
diff --git a/src/drivers/fluid_jack.c b/src/drivers/fluid_jack.c
@@ -658,6 +658,11 @@ fluid_jack_driver_process(jack_nframes_t nframes, void *arg)
     }
 
     audio_driver = fluid_atomic_pointer_get(&client->audio_driver);
+    if(audio_driver == NULL)
+    {
+        // shutting down
+        return FLUID_OK;
+    }
 
     if(audio_driver->callback == NULL && audio_driver->num_output_ports == 1 && audio_driver->num_fx_ports == 0)  /* i.e. audio.jack.multi=no */
     {

Original file line number	Diff line number	Diff line change
`@@ -658,6 +658,11 @@ fluid_jack_driver_process(jack_nframes_t nframes, void *arg)`
`658`	`658`	`}`
`659`	`659`
`660`	`660`	`audio_driver = fluid_atomic_pointer_get(&client->audio_driver);`
	`661`	`+ if(audio_driver == NULL)`
	`662`	`+ {`
	`663`	`+ // shutting down`
	`664`	`+ return FLUID_OK;`
	`665`	`+ }`
`661`	`666`
`662`	`667`	`if(audio_driver->callback == NULL && audio_driver->num_output_ports == 1 && audio_driver->num_fx_ports == 0) /* i.e. audio.jack.multi=no */`
`663`	`668`	`{`