From: Jeremy Kerr
> Sent: 15 June 2020 03:55
While you are looking as this driver you might want to worry
about what it sets skp->truesize to.
> --- a/drivers/net/usb/ax88179_178a.c
> +++ b/drivers/net/usb/ax88179_178a.c
> @@ -1414,10 +1414,10 @@ static int ax88179_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
> }
>
> if (pkt_cnt == 0) {
> - /* Skip IP alignment psudo header */
> - skb_pull(skb, 2);
> skb->len = pkt_len;
> - skb_set_tail_pointer(skb, pkt_len);
> + /* Skip IP alignment pseudo header */
> + skb_pull(skb, 2);
> + skb_set_tail_pointer(skb, skb->len);
> skb->truesize = pkt_len + sizeof(struct sk_buff);
IIRC the memory allocated to the packet is likely to be over 64k.
David
-
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