netdev - [PATCH net-next] udp: expand SKB_DROP_REASON_UDP

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250306183101.817063-1-edumazet@google.com>
Date: Thu,  6 Mar 2025 18:31:01 +0000
From: Eric Dumazet <edumazet@...gle.com>
To: "David S . Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, 
	Paolo Abeni <pabeni@...hat.com>
Cc: Willem de Bruijn <willemb@...gle.com>, David Ahern <dsahern@...nel.org>, 
	Simon Horman <horms@...nel.org>, netdev@...r.kernel.org, eric.dumazet@...il.com, 
	Eric Dumazet <edumazet@...gle.com>
Subject: [PATCH net-next] udp: expand SKB_DROP_REASON_UDP_CSUM use

Use SKB_DROP_REASON_UDP_CSUM in __first_packet_length()
and udp_read_skb() when dropping a packet because of
a wrong UDP checksum.

Signed-off-by: Eric Dumazet <edumazet@...gle.com>
---
 net/ipv4/udp.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 17c7736d8349433ad2d4cbcc9414b2f8112610af..39c3adf333b5f02ca53f768c918c75f2fc7f93ac 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1848,7 +1848,7 @@ static struct sk_buff *__first_packet_length(struct sock *sk,
 			atomic_inc(&sk->sk_drops);
 			__skb_unlink(skb, rcvq);
 			*total += skb->truesize;
-			kfree_skb(skb);
+			kfree_skb_reason(skb, SKB_DROP_REASON_UDP_CSUM);
 		} else {
 			udp_skb_csum_unnecessary_set(skb);
 			break;
@@ -2002,7 +2002,7 @@ int udp_read_skb(struct sock *sk, skb_read_actor_t recv_actor)
 		__UDP_INC_STATS(net, UDP_MIB_CSUMERRORS, is_udplite);
 		__UDP_INC_STATS(net, UDP_MIB_INERRORS, is_udplite);
 		atomic_inc(&sk->sk_drops);
-		kfree_skb(skb);
+		kfree_skb_reason(skb, SKB_DROP_REASON_UDP_CSUM);
 		goto try_again;
 	}
 
-- 
2.49.0.rc0.332.g42c0ae87b1-goog