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ALSA: caiaq: Fix stray URB at probe error path 

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@kernel.org>
Reviewed-by: Johan Hovold <johan@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2017-10-11 16:39:02 +02:00
parent 7110599884
commit 99fee50824
1 changed files with 9 additions and 3 deletions
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12
sound/usb/caiaq/device.c
View File

@ -469,10 +469,12 @@ static int init_card(struct snd_usb_caiaqdev *cdev)
err = snd_usb_caiaq_send_command(cdev, EP1_CMD_GET_DEVICE_INFO, NULL, 0);
if (err)
return err;
goto err_kill_urb;
if (!wait_event_timeout(cdev->ep1_wait_queue, cdev->spec_received, HZ))
return -ENODEV;
if (!wait_event_timeout(cdev->ep1_wait_queue, cdev->spec_received, HZ)) {
err = -ENODEV;
goto err_kill_urb;
}
usb_string(usb_dev, usb_dev->descriptor.iManufacturer,
cdev->vendor_name, CAIAQ_USB_STR_LEN);
@ -507,6 +509,10 @@ static int init_card(struct snd_usb_caiaqdev *cdev)
setup_card(cdev);
return 0;
err_kill_urb:
usb_kill_urb(&cdev->ep1_in_urb);
return err;
}
static int snd_probe(struct usb_interface *intf,