openwrtv3/target/linux/generic/patches-4.4/653-disable_netlink_trim.patch
Hauke Mehrtens 88b125e9a4 kernel: update kernel 4.4 to 4.4.56
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
2017-03-26 12:23:12 +02:00

27 lines
613 B
Diff

--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -1187,24 +1187,7 @@ void netlink_detachskb(struct sock *sk,
static struct sk_buff *netlink_trim(struct sk_buff *skb, gfp_t allocation)
{
- int delta;
-
WARN_ON(skb->sk != NULL);
- delta = skb->end - skb->tail;
- if (is_vmalloc_addr(skb->head) || delta * 2 < skb->truesize)
- return skb;
-
- if (skb_shared(skb)) {
- struct sk_buff *nskb = skb_clone(skb, allocation);
- if (!nskb)
- return skb;
- consume_skb(skb);
- skb = nskb;
- }
-
- if (!pskb_expand_head(skb, 0, -delta, allocation))
- skb->truesize -= delta;
-
return skb;
}