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| author | Phillip Potter <phil@philpotter.co.uk> | 2021-04-23 00:49:45 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-14 10:50:16 +0200 |
| commit | 9a51e36ebf433adf59c051bec33f5aa54640bb4d (patch) | |
| tree | df735ff224347fb02070f14674da7f34878e6e4e | |
| parent | 8d903ac08c9b479421410d5f641b018274ec97a2 (diff) | |
| download | linux-9a51e36ebf433adf59c051bec33f5aa54640bb4d.tar.gz linux-9a51e36ebf433adf59c051bec33f5aa54640bb4d.tar.bz2 linux-9a51e36ebf433adf59c051bec33f5aa54640bb4d.zip | |
net: geneve: modify IP header check in geneve6_xmit_skb and geneve_xmit_skb
[ Upstream commit d13f048dd40e8577260cd43faea8ec9b77520197 ]
Modify the header size check in geneve6_xmit_skb and geneve_xmit_skb
to use pskb_inet_may_pull rather than pskb_network_may_pull. This fixes
two kernel selftest failures introduced by the commit introducing the
checks:
IPv4 over geneve6: PMTU exceptions
IPv4 over geneve6: PMTU exceptions - nexthop objects
It does this by correctly accounting for the fact that IPv4 packets may
transit over geneve IPv6 tunnels (and vice versa), and still fixes the
uninit-value bug fixed by the original commit.
Reported-by: kernel test robot <oliver.sang@intel.com>
Fixes: 6628ddfec758 ("net: geneve: check skb is large enough for IPv4/IPv6 header")
Suggested-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Acked-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/net/geneve.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/geneve.c b/drivers/net/geneve.c index 040edc6fc560..0d8eb4a1dc2f 100644 --- a/drivers/net/geneve.c +++ b/drivers/net/geneve.c @@ -891,7 +891,7 @@ static int geneve_xmit_skb(struct sk_buff *skb, struct net_device *dev, __be16 sport; int err; - if (!pskb_network_may_pull(skb, sizeof(struct iphdr))) + if (!pskb_inet_may_pull(skb)) return -EINVAL; sport = udp_flow_src_port(geneve->net, skb, 1, USHRT_MAX, true); @@ -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_inet_may_pull(skb)) return -EINVAL; sport = udp_flow_src_port(geneve->net, skb, 1, USHRT_MAX, true); |