Commit 62376025 authored Mar 27, 2018 by Colin Ian King Committed by Takashi Iwai Mar 27, 2018

ALSA: usb-audio: fix memory leak on cval



With the current exit return path of the ctl_info allocation failure
cval is not being freed resulting in a memory leak. Fix this by kfree'ing
it on the return.

Detected by CoverityScan, CID#1466878 ("Resource Leak")

Fixes: 21e9b3e9 ("ALSA: usb-audio: fix uac control query argument")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

parent f6d297df

sound/usb/mixer.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -1365,8 +1365,10 @@ static void build_feature_ctl(struct mixer_build state, void raw_desc,
		cval->cmask = ctl_mask;

		ctl_info = get_feature_control_info(control);
		if (!ctl_info)
		if (!ctl_info) {
		kfree(cval);
		return;
		}
		if (state->mixer->protocol == UAC_VERSION_1)
		cval->val_type = ctl_info->type;
		else /* UAC_VERSION_2 */