linux-kernel - [PATCH] ALSA: scarlett2: Prevent leaking urb

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Message-Id: <20240521010352.1082164-1-nichen@iscas.ac.cn>
Date: Tue, 21 May 2024 09:03:52 +0800
From: Chen Ni <nichen@...as.ac.cn>
To: g@...vu,
	perex@...ex.cz,
	tiwai@...e.com
Cc: alsa-devel@...a-project.org,
	linux-sound@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Chen Ni <nichen@...as.ac.cn>
Subject: [PATCH] ALSA: scarlett2: Prevent leaking urb

In scarlett2_init_notify() if kmalloc() fails the allocated urb should
be released.

Signed-off-by: Chen Ni <nichen@...as.ac.cn>
---
 sound/usb/mixer_scarlett2.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/sound/usb/mixer_scarlett2.c b/sound/usb/mixer_scarlett2.c
index 1150cf104985..4cad6b2a0292 100644
--- a/sound/usb/mixer_scarlett2.c
+++ b/sound/usb/mixer_scarlett2.c
@@ -8637,9 +8637,10 @@ static int scarlett2_init_notify(struct usb_mixer_interface *mixer)
 		return -ENOMEM;
 
 	transfer_buffer = kmalloc(private->wMaxPacketSize, GFP_KERNEL);
-	if (!transfer_buffer)
+	if (!transfer_buffer) {
+		usb_free_urb(mixer->urb);
 		return -ENOMEM;
-
+	}
 	usb_fill_int_urb(mixer->urb, dev, pipe,
 			 transfer_buffer, private->wMaxPacketSize,
 			 scarlett2_notify, mixer, private->bInterval);
-- 
2.25.1