| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.4 028/117] ALSA: usb-audio: avoid freeing umidi object twice | Date | Sun, 14 Feb 2016 14:21:05 -0800 |
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4.4-stable review patch. If anyone has any objections, please let me know.
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From: Andrey Konovalov <andreyknvl@gmail.com>
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 <andreyknvl@gmail.com> Acked-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- 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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