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authorRichard Alpe <richard.alpe@ericsson.com>2016-03-03 14:20:40 +0100
committerDavid S. Miller <davem@davemloft.net>2016-03-06 22:54:56 -0500
commit9b3009604b8e305c32125530a3cbcc57d88f3bc1 (patch)
treed5c275e3324846d9ff7ca120150c521c6d786feb /net/tipc
parent962d8cdc3133435aed2928637f73e272128a326c (diff)
downloadlinux-9b3009604b8e305c32125530a3cbcc57d88f3bc1.tar.bz2
tipc: add net device to skb before UDP xmit
Prior to this patch enabling a IPv4 UDP bearer caused a null pointer dereference in iptunnel_xmit_stats(), when it tried to dereference the net device from the skb. To resolve this we now point the skb device to the net device resolved from the routing table. Fixes: 039f50629b7f (ip_tunnel: Move stats update to iptunnel_xmit()) Signed-off-by: Richard Alpe <richard.alpe@ericsson.com> Acked-by: Jon Maloy <jon.maloy@ericsson.com> Reviewed-by: Erik Hugne <erik.hugne@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc')
-rw-r--r--net/tipc/udp_media.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/net/tipc/udp_media.c b/net/tipc/udp_media.c
index d63a911e7fe2..f22a5bb169c9 100644
--- a/net/tipc/udp_media.c
+++ b/net/tipc/udp_media.c
@@ -181,6 +181,8 @@ static int tipc_udp_send_msg(struct net *net, struct sk_buff *skb,
err = PTR_ERR(rt);
goto tx_error;
}
+
+ skb->dev = rt->dst.dev;
ttl = ip4_dst_hoplimit(&rt->dst);
udp_tunnel_xmit_skb(rt, ub->ubsock->sk, skb, src->ipv4.s_addr,
dst->ipv4.s_addr, 0, ttl, 0, src->udp_port,