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Commit 5cd5d7c4 authored by Clemens Ladisch's avatar Clemens Ladisch Committed by Takashi Iwai
Browse files

ALSA: usb-audio: fix rate_list memory leak 



The array of sample rates is reallocated every time when opening
the PCM device, but was freed only once when unplugging the device.

Reported-by: default avatar"Alexander E. Patrakov" <patrakov@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: default avatarClemens Ladisch <clemens@ladisch.de>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent adcc70b2

sound/usb/pcm.c

+3 −0
Original line number Diff line number Diff line
@@ -788,6 +788,9 @@ static int snd_usb_pcm_check_knot(struct snd_pcm_runtime *runtime, 
	int count = 0, needs_knot = 0;

	int err;



	kfree(subs->rate_list.list);

	subs->rate_list.list = NULL;



	list_for_each_entry(fp, &subs->fmt_list, list) {

		if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS)

			return 0;