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Patch "net: lwtunnel: Handle lwtunnel_fill_encap failure" has been added to the 4.9-stable tree

PATCH [email protected] 1 participant 1 message Feb 1, 2017

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This is a note to let you know that I've just added the patch titled

net: lwtunnel: Handle lwtunnel_fill_encap failure

to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
net-lwtunnel-handle-lwtunnel_fill_encap-failure.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

Quoted 1 line

From foo@baz Wed Feb 1 08:50:24 CET 2017

From: David Ahern <[email protected]>
Date: Wed, 11 Jan 2017 14:29:54 -0800
Subject: net: lwtunnel: Handle lwtunnel_fill_encap failure

From: David Ahern <[email protected]>

[ Upstream commit ea7a80858f57d8878b1499ea0f1b8a635cc48de7 ]

Handle failure in lwtunnel_fill_encap adding attributes to skb.

Fixes 571e722676fe ("ipv4: support for fib route lwtunnel encap attributes")
Fixes 19e42e451506 ("ipv6: support for fib route lwtunnel encap attributes")
Signed-off-by David Ahern <[email protected]>
Signed-off-by David S. Miller <[email protected]>
Signed-off-by Greg Kroah-Hartman <[email protected]>
---
 net/ipv4/fib_semantics.c |   11 +++++++----
 net/ipv6/route.c         |    3 ++-
 2 files changed, 9 insertions(+), 5 deletions(-)
net/ipv4/fib_semantics.c +7 -4
@@ -1278,8 +1278,9 @@ int fib_dump_info(struct sk_buff *skb, u
 		    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) {

@@ -1315,8 +1316,10 @@ int fib_dump_info(struct sk_buff *skb, u
 			    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);
net/ipv6/route.c +2 -1
@@ -3306,7 +3306,8 @@ 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;

Patches currently in stable-queue which might be from [email protected] are

queue-4.9/net-lwtunnel-handle-lwtunnel_fill_encap-failure.patch queue-4.9/lwtunnel-fix-autoload-of-lwt-modules.patch queue-4.9/net-ipv4-fix-table-id-in-getroute-response.patch queue-4.9/net-mpls-fix-multipath-selection-for-lsr-use-case.patch