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Merge pull request #5066 from ak503/libfrr_crash

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zebra: if_is_loopback_or_vrf crash if if_lookup_by_index return NULL
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Donald Sharp 2019-09-26 19:32:41 -04:00 committed by GitHub
commit 5c256b572c
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1 changed files with 8 additions and 4 deletions
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12
zebra/zebra_rib.c
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@ -1046,14 +1046,18 @@ static struct route_entry *rib_choose_best(struct route_entry *current,
struct nexthop *nexthop = NULL;
for (ALL_NEXTHOPS(alternate->ng, nexthop)) {
if (if_is_loopback_or_vrf(if_lookup_by_index(
nexthop->ifindex, alternate->vrf_id)))
struct interface *ifp = if_lookup_by_index(
nexthop->ifindex, alternate->vrf_id);
if (ifp && if_is_loopback_or_vrf(ifp))
return alternate;
}
for (ALL_NEXTHOPS(current->ng, nexthop)) {
if (if_is_loopback_or_vrf(if_lookup_by_index(
nexthop->ifindex, current->vrf_id)))
struct interface *ifp = if_lookup_by_index(
nexthop->ifindex, current->vrf_id);
if (ifp && if_is_loopback_or_vrf(ifp))
return current;
}