commit 084606befb45507e9241b5555f86196fe08530f6
author John Lo <loj@cisco.com> Tue Jun 19 15:27:48 2018 -0400
committer Dave Barach <openvpp@barachs.net> Tue Jun 19 21:26:10 2018 +0000
tree 25982dd871832335b2f62159657c3b3b31e361f2
parent 7e607a73898b81c21a24038a2350fdda3b1c67ff

Check get packet template allocation failure (VPP-1321)

After calling vlib_packet_template_get_packet(), make sure
packet buffer is allocated before using it.

Change-Id: Idb5199f4e2c9596137b2101e502d611f474a6ffe
Signed-off-by: John Lo <loj@cisco.com>

src/vnet/ip/ip6_forward.c

diff --git a/src/vnet/ip/ip6_forward.c b/src/vnet/ip/ip6_forward.c
index 5ea7d8d..cf1011f 100644
--- a/src/vnet/ip/ip6_forward.c
+++ b/src/vnet/ip/ip6_forward.c
@@ -1476,6 +1476,8 @@
     vlib_packet_template_get_packet (vm,
 				     &im->discover_neighbor_packet_template,
 				     &bi);
+  if (!h)
+    return clib_error_return (0, "ICMP6 NS packet allocation failed");
 
   hi = vnet_get_sup_hw_interface (vnm, sw_if_index);