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27 lines
1000 B
Diff
27 lines
1000 B
Diff
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From 32412565c27d63e15f25e76d86ee04c29b201b96 Mon Sep 17 00:00:00 2001
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From: Felix Fietkau <nbd@nbd.name>
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Date: Mon, 19 Aug 2024 15:20:42 +0200
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Subject: [PATCH] udp: fix receiving fraglist GSO packets
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When assembling fraglist GSO packets, udp4_gro_complete does not set
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skb->csum_start, which makes the extra validation in __udp_gso_segment fail.
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Fixes: 89add40066f9 ("net: drop bad gso csum_start and offset in virtio_net_hdr")
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Signed-off-by: Felix Fietkau <nbd@nbd.name>
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---
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net/ipv4/udp_offload.c | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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--- a/net/ipv4/udp_offload.c
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+++ b/net/ipv4/udp_offload.c
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@@ -279,7 +279,8 @@ struct sk_buff *__udp_gso_segment(struct
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return ERR_PTR(-EINVAL);
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if (unlikely(skb_checksum_start(gso_skb) !=
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- skb_transport_header(gso_skb)))
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+ skb_transport_header(gso_skb) &&
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+ !(skb_shinfo(gso_skb)->gso_type & SKB_GSO_FRAGLIST)))
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return ERR_PTR(-EINVAL);
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/* We don't know if egress device can segment and checksum the packet
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