On Sun, Aug 4, 2013 at 3:07 AM, David Miller <davem@xxxxxxxxxxxxx> wrote:
> From: Oliver Neukum <oneukum@xxxxxxx>
> Date: Sat, 03 Aug 2013 07:56:53 +0200
>
>> On Sat, 2013-08-03 at 10:46 +0800, Ming Lei wrote:
>>
>>> @@ -1268,10 +1298,14 @@ netdev_tx_t usbnet_start_xmit (struct sk_buff *skb,
>>> entry = (struct skb_data *) skb->cb;
>>> entry->urb = urb;
>>> entry->dev = dev;
>>> - entry->length = length;
>>>
>>> usb_fill_bulk_urb (urb, dev->udev, dev->out,
>>> skb->data, skb->len, tx_complete, skb);
>>> + if (dev->can_dma_sg) {
>>> + if (build_dma_sg(skb, urb) < 0)
>>> + goto drop;
>>
>> Where do you free urb->sg?
>
> Indeed, this appears to leak.
>
> The devio.c code in the USB layer takes care to manage freeing of
> the urb->sg, so this usbnet code will have to as well.
Hamm, kfree(urb->sg) is removed carelessly in v1, sorry for that.
Will fix it in -v2.
Thanks,
--
Ming Lei
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