diff options
| author |   Matthew Smith <mgsmith@netgate.com> | 2022-08-19 19:54:40 +0000 |
|---|---|---|
| committer |   Neale Ranns <neale@graphiant.com> | 2022-08-23 22:12:58 +0000 |
| commit | 9cd37fb28ce03b22a741e2be31250790b11182e0 (patch) | |
| tree | b21a1ab08c8a44f0206291a145ada6288d096017 /src/plugins/linux-cp | |
| parent | 1a1c59d1a20ce834ee2296e9b12321410bbabac9 (diff) | |
linux-cp: handle AF_BRIDGE neighbors
Type: improvement
VPP crashes when a linux-cp tap is added to a bridge on the host system
because rtnl_neigh_get_dst() returns NULL for the neighbor message that
is sent by the kernel.
Check for NULL before trying to use the address from a neighbor in a
netlink message.
Signed-off-by: Matthew Smith <mgsmith@netgate.com>
Change-Id: I8a683d815a09620df9c0cc76e18df39828428e2c
Signed-off-by: Matthew Smith <mgsmith@netgate.com>
Diffstat (limited to 'src/plugins/linux-cp')
| -rw-r--r-- | src/plugins/linux-cp/lcp_router.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/src/plugins/linux-cp/lcp_router.c b/src/plugins/linux-cp/lcp_router.c index acf0a034be0..04a6ba05a89 100644 --- a/src/plugins/linux-cp/lcp_router.c +++ b/src/plugins/linux-cp/lcp_router.c @@ -710,8 +710,11 @@ lcp_router_neigh_del (struct rtnl_neigh *rn) { ip_address_t nh; int rv; + struct nl_addr *rna; - lcp_router_mk_addr (rtnl_neigh_get_dst (rn), &nh); + if ((rna = rtnl_neigh_get_dst (rn)) == NULL) + return; + lcp_router_mk_addr (rna, &nh); if (ip46_address_is_multicast (&ip_addr_46 (&nh))) { @@ -759,8 +762,11 @@ lcp_router_neigh_add (struct rtnl_neigh *rn) struct nl_addr *ll; ip_address_t nh; int state; + struct nl_addr *rna; - lcp_router_mk_addr (rtnl_neigh_get_dst (rn), &nh); + if ((rna = rtnl_neigh_get_dst (rn)) == NULL) + return; + lcp_router_mk_addr (rna, &nh); if (ip46_address_is_multicast (&ip_addr_46 (&nh))) { |