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authorClemens Ladisch <clemens@ladisch.de>2012-05-18 18:00:43 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-06-10 00:33:01 +0900
commita6923156ec0556f79a8ec5deb40d1aa929184b21 (patch)
treebbcc7aea67a910160b3e6828824a1cd3b7352c95 /sound
parent08bbb19de6601c4205419ad3c30b730693919b07 (diff)
ALSA: usb-audio: fix rate_list memory leak
commit 5cd5d7c44990658df6ab49f6253c39617c53b03d upstream. 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: "Alexander E. Patrakov" <patrakov@gmail.com> Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'sound')
-rw-r--r--sound/usb/pcm.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c
index b8dcbf407bbb..506c0fa679f6 100644
--- a/sound/usb/pcm.c
+++ b/sound/usb/pcm.c
@@ -670,6 +670,9 @@ 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;