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net: icmp6_send should use dst dev to determine L3 domain

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commit 5d41ce29e3b91ef305f88d23f72b3359de329cec upstream.

icmp6_send is called in response to some event. The skb may not have
the device set (skb->dev is NULL), but it is expected to have a dst set.
Update icmp6_send to use the dst on the skb to determine L3 domain.

Fixes: ca254490c8dfd ("net: Add VRF support to IPv6 stack")
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
David Ahern 2016-11-03 16:17:26 -07:00 committed by Greg Kroah-Hartman
parent 720ef97e3c
commit 12003a72a1
1 changed files with 1 additions and 1 deletions
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net/ipv6/icmp.c
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@ -446,7 +446,7 @@ static void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info)
if (__ipv6_addr_needs_scope_id(addr_type))
iif = skb->dev->ifindex;
else
iif = l3mdev_master_ifindex(skb->dev);
iif = l3mdev_master_ifindex(skb_dst(skb)->dev);
/*
* Must not send error if the source does not uniquely