3.2.97-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Takashi Iwai <tiwai@xxxxxxx>
commit 99fee508245825765ff60155fed43f970ff83a8f upstream.
caiaq driver doesn't kill the URB properly at its error path during
the probe, which may lead to a use-after-free error later. This patch
addresses it.
Reported-by: Johan Hovold <johan@xxxxxxxxxx>
Reviewed-by: Johan Hovold <johan@xxxxxxxxxx>
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
[bwh: Backported to 3.2: s/cdev/dev/g]
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
sound/usb/caiaq/device.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
--- a/sound/usb/caiaq/device.c
+++ b/sound/usb/caiaq/device.c
@@ -440,10 +440,12 @@ static int __devinit init_card(struct sn
err = snd_usb_caiaq_send_command(dev, EP1_CMD_GET_DEVICE_INFO, NULL, 0);
if (err)
- return err;
+ goto err_kill_urb;
- if (!wait_event_timeout(dev->ep1_wait_queue, dev->spec_received, HZ))
- return -ENODEV;
+ if (!wait_event_timeout(dev->ep1_wait_queue, dev->spec_received, HZ)) {
+ err = -ENODEV;
+ goto err_kill_urb;
+ }
usb_string(usb_dev, usb_dev->descriptor.iManufacturer,
dev->vendor_name, CAIAQ_USB_STR_LEN);
@@ -479,6 +481,10 @@ static int __devinit init_card(struct sn
setup_card(dev);
return 0;
+
+ err_kill_urb:
+ usb_kill_urb(&dev->ep1_in_urb);
+ return err;
}
static int __devinit snd_probe(struct usb_interface *intf,