From: Ferruh Yigit <ferruh.yigit@intel.com>
Date: Sun, 28 Oct 2018 01:08:46 +0000 (+0000)
Subject: vhost: fix possible out of bound access
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=7b178300accc661b7bbd47da93380106378dba1c;p=dpdk.git

vhost: fix possible out of bound access

Fixes: d7280c9fffcb ("vhost: support selective datapath")
Cc: stable@dpdk.org

Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---

diff --git a/lib/librte_vhost/vdpa.c b/lib/librte_vhost/vdpa.c
index c2c5dff1d4..e7d849ee0f 100644
--- a/lib/librte_vhost/vdpa.c
+++ b/lib/librte_vhost/vdpa.c
@@ -63,6 +63,9 @@ rte_vdpa_register_device(struct rte_vdpa_dev_addr *addr,
 			break;
 	}
 
+	if (i == MAX_VHOST_DEVICE)
+		return -1;
+
 	sprintf(device_name, "vdpa-dev-%d", i);
 	dev = rte_zmalloc(device_name, sizeof(struct rte_vdpa_device),
 			RTE_CACHE_LINE_SIZE);