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Merge pull request #2513 from pacovn/Coverity_1455334_et_al_Dereference_null_return_value

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eigrpd: null check (Coverity 1455334 and 4 alike)
This commit is contained in:
Quentin Young 2018-06-21 14:34:56 -04:00 committed by GitHub
commit 132880ad0a
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 20 additions and 5 deletions
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8
eigrpd/eigrp_fsm.c
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@ -486,6 +486,7 @@ int eigrp_fsm_event_q_fcn(struct eigrp_fsm_action_message *msg)
int eigrp_fsm_event_keep_state(struct eigrp_fsm_action_message *msg)
{
struct eigrp *eigrp;
struct eigrp_prefix_entry *prefix = msg->prefix;
struct eigrp_nexthop_entry *ne = listnode_head(prefix->entries);
@ -498,9 +499,10 @@ int eigrp_fsm_event_keep_state(struct eigrp_fsm_action_message *msg)
if (msg->packet_type == EIGRP_OPC_QUERY)
eigrp_send_reply(msg->adv_router, prefix);
prefix->req_action |= EIGRP_FSM_NEED_UPDATE;
listnode_add(
(eigrp_lookup())->topology_changes_internalIPV4,
prefix);
eigrp = eigrp_lookup();
assert(eigrp);
listnode_add(eigrp->topology_changes_internalIPV4,
prefix);
}
eigrp_topology_update_node_flags(prefix);
eigrp_update_routing_table(prefix);

3
eigrpd/eigrp_interface.c
View File

@ -336,6 +336,9 @@ void eigrp_if_free(struct eigrp_interface *ei, int source)
struct eigrp_prefix_entry *pe;
struct eigrp *eigrp = eigrp_lookup();
if (!eigrp)
return;
if (source == INTERFACE_DOWN_BY_VTY) {
THREAD_OFF(ei->t_hello);
eigrp_hello_send(ei, EIGRP_HELLO_GRACEFUL_SHUTDOWN, NULL);

14
eigrpd/eigrp_topology.c
View File

@ -182,6 +182,9 @@ void eigrp_prefix_entry_delete(struct route_table *table,
struct eigrp *eigrp = eigrp_lookup();
struct route_node *rn;
if (!eigrp)
return;
rn = route_node_lookup(table, pe->destination);
if (!rn)
return;
@ -426,6 +429,9 @@ void eigrp_topology_update_all_node_flags(struct eigrp *eigrp)
struct eigrp_prefix_entry *pe;
struct route_node *rn;
if (!eigrp)
return;
for (rn = route_top(eigrp->topology_table); rn; rn = route_next(rn)) {
pe = rn->info;
@ -471,11 +477,15 @@ void eigrp_topology_update_node_flags(struct eigrp_prefix_entry *dest)
void eigrp_update_routing_table(struct eigrp_prefix_entry *prefix)
{
struct eigrp *eigrp = eigrp_lookup();
struct list *successors =
eigrp_topology_get_successor_max(prefix, eigrp->max_paths);
struct list *successors;
struct listnode *node;
struct eigrp_nexthop_entry *entry;
if (!eigrp)
return;
successors = eigrp_topology_get_successor_max(prefix, eigrp->max_paths);
if (successors) {
eigrp_zebra_route_add(prefix->destination, successors);
for (ALL_LIST_ELEMENTS_RO(successors, node, entry))