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[media] igorplugusb: fix leaks in error path

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Since rc_allocate_device() uses kmalloc, it can returns NULL,
so need to check,  otherwise, NULL derefenrece can happen.

Reported-by: Insu Yun <wuninsu@gmail.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Sean Young 2016-02-19 12:33:53 -02:00 committed by Mauro Carvalho Chehab
parent 050b6c98b4
commit a40973ff10
1 changed files with 12 additions and 5 deletions
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17
drivers/media/rc/igorplugusb.c
View file

@ -152,7 +152,7 @@ static int igorplugusb_probe(struct usb_interface *intf,
struct usb_endpoint_descriptor *ep;
struct igorplugusb *ir;
struct rc_dev *rc;
int ret;
int ret = -ENOMEM;
udev = interface_to_usbdev(intf);
idesc = intf->cur_altsetting;
@ -182,7 +182,7 @@ static int igorplugusb_probe(struct usb_interface *intf,
ir->urb = usb_alloc_urb(0, GFP_KERNEL);
if (!ir->urb)
return -ENOMEM;
goto fail;
usb_fill_control_urb(ir->urb, udev,
usb_rcvctrlpipe(udev, 0), (uint8_t *)&ir->request,
@ -191,6 +191,9 @@ static int igorplugusb_probe(struct usb_interface *intf,
usb_make_path(udev, ir->phys, sizeof(ir->phys));
rc = rc_allocate_device();
if (!rc)
goto fail;
rc->input_name = DRIVER_DESC;
rc->input_phys = ir->phys;
usb_to_input_id(udev, &rc->input_id);
@ -214,9 +217,7 @@ static int igorplugusb_probe(struct usb_interface *intf,
ret = rc_register_device(rc);
if (ret) {
dev_err(&intf->dev, "failed to register rc device: %d", ret);
rc_free_device(rc);
usb_free_urb(ir->urb);
return ret;
goto fail;
}
usb_set_intfdata(intf, ir);
@ -224,6 +225,12 @@ static int igorplugusb_probe(struct usb_interface *intf,
igorplugusb_cmd(ir, SET_INFRABUFFER_EMPTY);
return 0;
fail:
rc_free_device(ir->rc);
usb_free_urb(ir->urb);
del_timer(&ir->timer);
return ret;
}
static void igorplugusb_disconnect(struct usb_interface *intf)