From b25501eb28ca1bb68bb68f3dcdccabe5e1c68811 Mon Sep 17 00:00:00 2001
From: Pravin B Shelar <pshelar@nicira.com>
Date: Tue, 15 Jul 2014 11:12:11 -0700
Subject: [PATCH] datapath: Check for NULL upcall_portids.

Following patch adds NULL check for memory allocated
by kmalloc.

Reported-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
---
 datapath/vport.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/datapath/vport.c b/datapath/vport.c
index ce46f5b74..1d19b8aea 100644
--- a/datapath/vport.c
+++ b/datapath/vport.c
@@ -390,6 +390,9 @@ int ovs_vport_set_upcall_portids(struct vport *vport,  struct nlattr *ids)
 
 	vport_portids = kmalloc(sizeof *vport_portids + nla_len(ids),
 				GFP_KERNEL);
+	if (!vport_portids)
+		return -ENOMEM;
+
 	vport_portids->n_ids = nla_len(ids) / sizeof(u32);
 	vport_portids->rn_ids = reciprocal_value(vport_portids->n_ids);
 	nla_memcpy(vport_portids->ids, ids, nla_len(ids));
-- 
2.20.1