target/linux/generic/patches-3.18/653-disable_netlink_trim.patch

   1 --- a/net/netlink/af_netlink.c
   2 +++ b/net/netlink/af_netlink.c
   3 @@ -1715,27 +1715,7 @@ void netlink_detachskb(struct sock *sk,
   4
   5  static struct sk_buff *netlink_trim(struct sk_buff *skb, gfp_t allocation)
   6  {
   7 -       int delta;
   8 -
   9         WARN_ON(skb->sk != NULL);
  10 -       if (netlink_skb_is_mmaped(skb))
  11 -               return skb;
  12 -
  13 -       delta = skb->end - skb->tail;
  14 -       if (is_vmalloc_addr(skb->head) || delta * 2 < skb->truesize)
  15 -               return skb;
  16 -
  17 -       if (skb_shared(skb)) {
  18 -               struct sk_buff *nskb = skb_clone(skb, allocation);
  19 -               if (!nskb)
  20 -                       return skb;
  21 -               consume_skb(skb);
  22 -               skb = nskb;
  23 -       }
  24 -
  25 -       if (!pskb_expand_head(skb, 0, -delta, allocation))
  26 -               skb->truesize -= delta;
  27 -
  28         return skb;
  29  }
  30