linux-kernel - [PATCH 5.19 1143/1157] raw: fix a typo in raw_icmp

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Message-Id: <20220815180526.207784512@linuxfoundation.org>
Date:   Mon, 15 Aug 2022 20:08:19 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, John Sperbeck <jsperbeck@...gle.com>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH 5.19 1143/1157] raw: fix a typo in raw_icmp_error()

From: Eric Dumazet <edumazet@...gle.com>

commit 97a4d46b1516250d640c1ae0c9e7129d160d6a1c upstream.

I accidentally broke IPv4 traceroute, by swapping iph->saddr
and iph->daddr.

Probably because raw_icmp_error() and raw_v4_input()
use different order for iph->saddr and iph->daddr.

Fixes: ba44f8182ec2 ("raw: use more conventional iterators")
Reported-by: John Sperbeck <jsperbeck@...gle.com>
Signed-off-by: Eric Dumazet <edumazet@...gle.com>
Link: https://lore.kernel.org/r/20220623193540.2851799-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 net/ipv4/raw.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -278,7 +278,7 @@ void raw_icmp_error(struct sk_buff *skb,
 	hlist_nulls_for_each_entry(sk, hnode, hlist, sk_nulls_node) {
 		iph = (const struct iphdr *)skb->data;
 		if (!raw_v4_match(net, sk, iph->protocol,
-				  iph->saddr, iph->daddr, dif, sdif))
+				  iph->daddr, iph->saddr, dif, sdif))
 			continue;
 		raw_err(sk, skb, info);
 	}