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ospf6d: Fix for crash when non area 0 network entered first

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When a user specifies a non area 0 network in an ospf6d
config the daemon could crash.

Ticket: CM-9134
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
This commit is contained in:
Donald Sharp 2016-02-23 18:47:55 -05:00
parent 2dbe016e4b
commit a807d96e7c
1 changed files with 8 additions and 0 deletions
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8
ospf6d/ospf6_abr.c
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@ -984,6 +984,14 @@ ospf6_abr_examin_brouter (u_int32_t router_id)
else else
oa = listgetdata(listhead(ospf6->area_list)); oa = listgetdata(listhead(ospf6->area_list));
/*
* It is possible to designate a non backbone
* area first. If that is the case safely
* fall out of this function.
*/
if (oa == NULL)
return;
type = htons (OSPF6_LSTYPE_INTER_ROUTER); type = htons (OSPF6_LSTYPE_INTER_ROUTER);
for (lsa = ospf6_lsdb_type_router_head (type, router_id, oa->lsdb); lsa; for (lsa = ospf6_lsdb_type_router_head (type, router_id, oa->lsdb); lsa;
lsa = ospf6_lsdb_type_router_next (type, router_id, lsa)) lsa = ospf6_lsdb_type_router_next (type, router_id, lsa))