4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Andrey Konovalov <[email protected]>

commit 07d86ca93db7e5cdf4743564d98292042ec21af7 upstream.

The 'umidi' object will be free'd on the error path by snd_usbmidi_free()
when tearing down the rawmidi interface. So we shouldn't try to free it
in snd_usbmidi_create() after having registered the rawmidi interface.

Found by KASAN.

Signed-off-by: Andrey Konovalov <[email protected]>
Acked-by: Clemens Ladisch <[email protected]>
Signed-off-by: Takashi Iwai <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

---
 sound/usb/midi.c |    1 -
 1 file changed, 1 deletion(-)

--- a/sound/usb/midi.c
+++ b/sound/usb/midi.c
@@ -2454,7 +2454,6 @@ int snd_usbmidi_create(struct snd_card *
        else
                err = snd_usbmidi_create_endpoints(umidi, endpoints);
        if (err < 0) {
-               snd_usbmidi_free(umidi);
                return err;
        }
 


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