target/linux/generic/pending-6.1/681-net-bridge-fix-multicast-to-unicast-with-fraglist-GS.patch

   1 From: Felix Fietkau <nbd@nbd.name>
   2 Date: Sat, 27 Apr 2024 18:54:25 +0200
   3 Subject: [PATCH] net: bridge: fix multicast-to-unicast with fraglist GSO
   4
   5 Calling skb_copy on a SKB_GSO_FRAGLIST skb is not valid, since it returns
   6 an invalid linearized skb. This code only needs to change the ethernet
   7 header, so pskb_copy is the right function to call here.
   8
   9 Fixes: 6db6f0eae605 ("bridge: multicast to unicast")
  10 Signed-off-by: Felix Fietkau <nbd@nbd.name>
  11 ---
  12
  13 --- a/net/bridge/br_forward.c
  14 +++ b/net/bridge/br_forward.c
  15 @@ -261,7 +261,7 @@ static void maybe_deliver_addr(struct ne
  16         if (skb->dev == p->dev && ether_addr_equal(src, addr))
  17                 return;
  18
  19 -       skb = skb_copy(skb, GFP_ATOMIC);
  20 +       skb = pskb_copy(skb, GFP_ATOMIC);
  21         if (!skb) {
  22                 DEV_STATS_INC(dev, tx_dropped);
  23                 return;