fix segfault when a netdev disappears

new_link is NULL in the v2 callback for a DEL action
canonical · Dec 11, 2019 · 010f80e · 010f80e
1 parent ce784ff
commit 010f80e
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/probert/_rtnetlinkmodule.c b/probert/_rtnetlinkmodule.c
@@ -76,6 +76,10 @@ static void observe_link_change(
 	int is_vlan, ifindex;
 	unsigned int flags;
 
+	if (act == NL_ACT_DEL) {
+		link = old_link;
+	}
+
 	is_vlan = rtnl_link_is_vlan(link);
 	ifindex = rtnl_link_get_ifindex(link);
 	flags = rtnl_link_get_flags(link);