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net: bridge: fix multicast-to-unicast with fraglist GSO

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[ Upstream commit 59c878cbcdd80ed39315573b3511d0acfd3501b5 ]

Calling skb_copy on a SKB_GSO_FRAGLIST skb is not valid, since it returns
an invalid linearized skb. This code only needs to change the ethernet
header, so pskb_copy is the right function to call here.

Fixes: 6db6f0eae6 ("bridge: multicast to unicast")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Acked-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Felix Fietkau
2024-04-27 20:24:18 +02:00
committed by Greg Kroah-Hartman
parent e005d6754e
commit cd37a5a08c
1 changed files with 1 additions and 1 deletions
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2
net/bridge/br_forward.c
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@@ -261,7 +261,7 @@ static void maybe_deliver_addr(struct net_bridge_port *p, struct sk_buff *skb,
if (skb->dev == p->dev && ether_addr_equal(src, addr)) if (skb->dev == p->dev && ether_addr_equal(src, addr))
return; return;
skb = skb_copy(skb, GFP_ATOMIC); skb = pskb_copy(skb, GFP_ATOMIC);
if (!skb) { if (!skb) {
DEV_STATS_INC(dev, tx_dropped); DEV_STATS_INC(dev, tx_dropped);
return; return;