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net: lwtunnel: Handle lwtunnel_fill_encap failure

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[ Upstream commit ea7a80858f57d8878b1499ea0f1b8a635cc48de7 ]

Handle failure in lwtunnel_fill_encap adding attributes to skb.

Fixes: 571e722676 ("ipv4: support for fib route lwtunnel encap attributes")
Fixes: 19e42e4515 ("ipv6: support for fib route lwtunnel encap attributes")
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 2017-01-11 14:29:54 -08:00 • committed by Greg Kroah-Hartman
parent 290db2cd51
commit 2e84b8ce6f
2 changed files with 9 additions and 5 deletions
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11
net/ipv4/fib_semantics.c
View file

@ -1277,8 +1277,9 @@ int fib_dump_info(struct sk_buff *skb, u32 portid, u32 seq, int event,
nla_put_u32(skb, RTA_FLOW, fi->fib_nh[0].nh_tclassid))
goto nla_put_failure;
#endif
if (fi->fib_nh->nh_lwtstate)
lwtunnel_fill_encap(skb, fi->fib_nh->nh_lwtstate);
if (fi->fib_nh->nh_lwtstate &&
lwtunnel_fill_encap(skb, fi->fib_nh->nh_lwtstate) < 0)
goto nla_put_failure;
}
#ifdef CONFIG_IP_ROUTE_MULTIPATH
if (fi->fib_nhs > 1) {
@ -1314,8 +1315,10 @@ int fib_dump_info(struct sk_buff *skb, u32 portid, u32 seq, int event,
nla_put_u32(skb, RTA_FLOW, nh->nh_tclassid))
goto nla_put_failure;
#endif
if (nh->nh_lwtstate)
lwtunnel_fill_encap(skb, nh->nh_lwtstate);
if (nh->nh_lwtstate &&
lwtunnel_fill_encap(skb, nh->nh_lwtstate) < 0)
goto nla_put_failure;
/* length of rtnetlink header + attributes */
rtnh->rtnh_len = nlmsg_get_pos(skb) - (void *) rtnh;
} endfor_nexthops(fi);

3
net/ipv6/route.c
View file

@ -3196,7 +3196,8 @@ static int rt6_fill_node(struct net *net,
if (nla_put_u8(skb, RTA_PREF, IPV6_EXTRACT_PREF(rt->rt6i_flags)))
goto nla_put_failure;
lwtunnel_fill_encap(skb, rt->dst.lwtstate);
if (lwtunnel_fill_encap(skb, rt->dst.lwtstate) < 0)
goto nla_put_failure;
nlmsg_end(skb, nlh);
return 0;