netlink: don't orphan skb in netlink_trim()
Netlink doesn't account skbs to the sending socket, so the there's no
need to orphan the skb before trimming it.
Removing the skb_orphan() call is required for mmap'ed netlink, which uses
a netlink specific skb destructor that must not be invoked before the
final freeing of the skb.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 978a61f..26779c2 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -851,7 +851,7 @@
{
int delta;
- skb_orphan(skb);
+ WARN_ON(skb->sk != NULL);
delta = skb->end - skb->tail;
if (delta * 2 < skb->truesize)