| From | Greg Kroah-Hartman <> | Subject | [PATCH 3.10 19/62] ipv6: fix illegal mac_header comparison on 32bit | Date | Mon, 13 Jan 2014 16:26:44 -0800 |
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3.10-stable review patch. If anyone has any objections, please let me know.
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From: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- include/linux/skbuff.h | 5 +++++ net/ipv6/udp_offload.c | 2 +- 2 files changed, 6 insertions(+), 1 deletion(-)
--- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -1741,6 +1741,11 @@ static inline void skb_set_mac_header(st } #endif /* NET_SKBUFF_DATA_USES_OFFSET */ +static inline void skb_pop_mac_header(struct sk_buff *skb) +{ + skb->mac_header = skb->network_header; +} + static inline void skb_probe_transport_header(struct sk_buff *skb, const int offset_hint) { --- a/net/ipv6/udp_offload.c +++ b/net/ipv6/udp_offload.c @@ -85,7 +85,7 @@ static struct sk_buff *udp6_ufo_fragment /* Check if there is enough headroom to insert fragment header. */ tnl_hlen = skb_tnl_header_len(skb); - if (skb->mac_header < (tnl_hlen + frag_hdr_sz)) { + if (skb_mac_header(skb) < skb->head + tnl_hlen + frag_hdr_sz) { if (gso_pskb_expand_head(skb, tnl_hlen + frag_hdr_sz)) goto out; }
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