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Merge pull request #5076 from ak503/libfrr_crash_7_2

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7.2: zebra: if_is_loopback_or_vrf crash if if_lookup_by_index return …
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Donald Sharp 2019-10-02 10:13:24 -04:00 committed by GitHub
commit 8309f3f3da
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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;
}