linux-kernel - [PATCH V2] ALSA: usb-audio: US16x08: Initialize array before use

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Message-Id: <20241229060240.1642-1-tanyaagarwal25699@gmail.com>
Date: Sun, 29 Dec 2024 11:32:42 +0530
From: Tanya Agarwal <tanyaagarwal25699@...il.com>
To: perex@...ex.cz,
	tiwai@...e.com
Cc: onkel@...aair.de,
	Markus.Elfring@....de,
	linux-sound@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	skhan@...uxfoundation.org,
	anupnewsmail@...il.com,
	tanyaagarwal25699@...il.com
Subject: [PATCH V2] ALSA: usb-audio: US16x08: Initialize array before use

From: Tanya Agarwal <tanyaagarwal25699@...il.com>

Initialize meter_urb array before use in mixer_us16x08.c.

CID 1410197: (#1 of 1): Uninitialized scalar variable (UNINIT)
uninit_use_in_call: Using uninitialized value *meter_urb when
calling get_meter_levels_from_urb.

Coverity Link:
https://scan7.scan.coverity.com/#/project-view/52849/11354?selectedIssue=1410197

Fixes: d2bb390a2081 ("ALSA: usb-audio: Tascam US-16x08 DSP mixer quirk")
Signed-off-by: Tanya Agarwal <tanyaagarwal25699@...il.com>
---
Changes in V2:
- Updated commit text
- Link to V1: https://lore.kernel.org/all/20241228070317.2956-1-tanyaagarwal25699@gmail.com
---
 sound/usb/mixer_us16x08.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/usb/mixer_us16x08.c b/sound/usb/mixer_us16x08.c
index 6eb7d93b358d..20ac32635f1f 100644
--- a/sound/usb/mixer_us16x08.c
+++ b/sound/usb/mixer_us16x08.c
@@ -687,7 +687,7 @@ static int snd_us16x08_meter_get(struct snd_kcontrol *kcontrol,
 	struct usb_mixer_elem_info *elem = kcontrol->private_data;
 	struct snd_usb_audio *chip = elem->head.mixer->chip;
 	struct snd_us16x08_meter_store *store = elem->private_data;
-	u8 meter_urb[64];
+	u8 meter_urb[64] = {0};
 
 	switch (kcontrol->private_value) {
 	case 0: {
-- 
2.39.5