From 57e4c21583a9fa4c9d34fa8263930c3a1d5c6cd9 Mon Sep 17 00:00:00 2001
From: Igor Ryzhov <iryzhov@nfware.com>
Date: Tue, 31 Aug 2021 13:41:40 +0300
Subject: [PATCH] ospfd: correctly cleanup spf data

ospf_spf_cleanup frees the data so we need to reset the stale pointers.

Fixes #9523.

Signed-off-by: Igor Ryzhov <iryzhov@nfware.com>
---
 ospfd/ospf_spf.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/ospfd/ospf_spf.c b/ospfd/ospf_spf.c
index 6a51440266e..8b4d55984c8 100644
--- a/ospfd/ospf_spf.c
+++ b/ospfd/ospf_spf.c
@@ -1781,6 +1781,9 @@ void ospf_spf_calculate_area(struct ospf *ospf, struct ospf_area *area,
 				    ospf->ti_lfa_protection_type);
 
 	ospf_spf_cleanup(area->spf, area->spf_vertex_list);
+
+	area->spf = NULL;
+	area->spf_vertex_list = NULL;
 }
 
 void ospf_spf_calculate_areas(struct ospf *ospf, struct route_table *new_table,