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From: Phillip Potter <phil@philpotter.co.uk>
To: davem@davemloft.net
Cc: kuba@kernel.org, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org, edumazet@google.com
Subject: [PATCH] net: geneve: modify IP header check in geneve6_xmit_skb
Date: Thu, 22 Apr 2021 00:11:00 +0100	[thread overview]
Message-ID: <20210421231100.7467-1-phil@philpotter.co.uk> (raw)

Modify the check in geneve6_xmit_skb to use the size of a struct iphdr
rather than struct ipv6hdr. This fixes two kernel selftest failures
introduced by commit 6628ddfec758
("net: geneve: check skb is large enough for IPv4/IPv6 header"), without
diminishing the fix provided by that commit.

Reported-by: kernel test robot <oliver.sang@intel.com>
Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
---
 drivers/net/geneve.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/geneve.c b/drivers/net/geneve.c
index 42f31c681846..a57a5e6f614f 100644
--- a/drivers/net/geneve.c
+++ b/drivers/net/geneve.c
@@ -988,7 +988,7 @@ static int geneve6_xmit_skb(struct sk_buff *skb, struct net_device *dev,
 	__be16 sport;
 	int err;
 
-	if (!pskb_network_may_pull(skb, sizeof(struct ipv6hdr)))
+	if (!pskb_network_may_pull(skb, sizeof(struct iphdr)))
 		return -EINVAL;
 
 	sport = udp_flow_src_port(geneve->net, skb, 1, USHRT_MAX, true);
-- 
2.30.2


             reply	other threads:[~2021-04-21 23:11 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-21 23:11 Phillip Potter [this message]
2021-04-22  0:39 ` [PATCH] net: geneve: modify IP header check in geneve6_xmit_skb Florian Westphal
2021-04-22  0:56   ` Phillip Potter
2021-04-22 16:03   ` Sabrina Dubroca
2021-04-22 16:52     ` Eric Dumazet
2021-04-22 17:18       ` Sabrina Dubroca
2021-04-22 21:03         ` Phillip Potter
2021-04-22  6:43 ` Eric Dumazet
2021-04-22 20:58   ` Phillip Potter

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