From 64e34726a184d42e4118efecbc283267a979dd6a Mon Sep 17 00:00:00 2001
From: Donald Sharp <sharpd@cumulusnetworks.com>
Date: Tue, 19 May 2015 17:24:41 -0700
Subject: [PATCH] Add a null check to ensure that another thread does not
 access the address in the deletion path of the interface.

Signed-off-by: Ayan Banerjee <ayan@cumulusnetworks.com>
Reviewed-by: Dinesh G Dutt <ddutt@cumulusnetworks.com>
---
 ospfd/ospf_dump.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ospfd/ospf_dump.c b/ospfd/ospf_dump.c
index ebcc717ff3..de62e0b7fa 100644
--- a/ospfd/ospf_dump.c
+++ b/ospfd/ospf_dump.c
@@ -204,7 +204,7 @@ ospf_if_name_string (struct ospf_interface *oi)
   static char buf[OSPF_IF_STRING_MAXLEN] = "";
   u_int32_t ifaddr;
 
-  if (!oi)
+  if (!oi || !oi->address)
     return "inactive";
 
   if (oi->type == OSPF_IFTYPE_VIRTUALLINK)