From: Igor Ryzhov <iryzhov@nfware.com>
Date: Fri, 7 May 2021 14:52:41 +0000 (+0300)
Subject: ospf6d: fix crash when removing router from vrf that doesn't exist
X-Git-Tag: base_8.1~520^2~1
X-Git-Url: https://git.puffer.fish/?a=commitdiff_plain;h=c84bbb2ad04f04d0a2420c7aa36d7935c454972d;p=mirror%2Ffrr.git

ospf6d: fix crash when removing router from vrf that doesn't exist

`listgetdata(listhead(list))` crashes for an empty list.

Reproducible with:
```
router ospf6 vrf doesntexist
 default-information originate always
 exit
no router ospf6 vrf doesntexist
```

Signed-off-by: Igor Ryzhov <iryzhov@nfware.com>
---

diff --git a/ospf6d/ospf6_asbr.c b/ospf6d/ospf6_asbr.c
index 6981baba99..ccab39481e 100644
--- a/ospf6d/ospf6_asbr.c
+++ b/ospf6d/ospf6_asbr.c
@@ -579,7 +579,7 @@ void ospf6_asbr_lsa_remove(struct ospf6_lsa *lsa,
 	if (ospf6_is_router_abr(ospf6))
 		oa = ospf6->backbone;
 	else
-		oa = listgetdata(listhead(ospf6->area_list));
+		oa = listnode_head(ospf6->area_list);
 
 	if (oa == NULL)
 		return;