dpdk/dpdk-2.2.0_patches/0015-enic-fix-crash-when-allocating-too-many-queues.patch

commit ddf2da3ecec97a316838f40fe13e217afafc6252
Author: Nelson Escobar <neescoba@cisco.com>
Date:   Thu Mar 17 15:49:58 2016 -0700

    enic: fix crash when allocating too many queues
    
    Add checks to make sure we don't try to allocate more tx or rx queues
    than we support.
    
    Fixes: fefed3d1e62c ("enic: new driver")
    
    Signed-off-by: Nelson Escobar <neescoba@cisco.com>
    Reviewed-by: John Daley <johndale@cisco.com>

diff --git a/drivers/net/enic/enic_ethdev.c b/drivers/net/enic/enic_ethdev.c
index bab0f7d..4969476 100644
--- a/drivers/net/enic/enic_ethdev.c
+++ b/drivers/net/enic/enic_ethdev.c
@@ -174,6 +174,13 @@ static int enicpmd_dev_tx_queue_setup(struct rte_eth_dev *eth_dev,
 	struct enic *enic = pmd_priv(eth_dev);
 
 	ENICPMD_FUNC_TRACE();
+	if (queue_idx >= ENIC_WQ_MAX) {
+		dev_err(enic,
+			"Max number of TX queues exceeded.  Max is %d\n",
+			ENIC_WQ_MAX);
+		return -EINVAL;
+	}
+
 	eth_dev->data->tx_queues[queue_idx] = (void *)&enic->wq[queue_idx];
 
 	ret = enic_alloc_wq(enic, queue_idx, socket_id, nb_desc);
@@ -262,6 +269,13 @@ static int enicpmd_dev_rx_queue_setup(struct rte_eth_dev *eth_dev,
 	struct enic *enic = pmd_priv(eth_dev);
 
 	ENICPMD_FUNC_TRACE();
+	if (queue_idx >= ENIC_RQ_MAX) {
+		dev_err(enic,
+			"Max number of RX queues exceeded.  Max is %d\n",
+			ENIC_RQ_MAX);
+		return -EINVAL;
+	}
+
 	eth_dev->data->rx_queues[queue_idx] = (void *)&enic->rq[queue_idx];
 
 	ret = enic_alloc_rq(enic, queue_idx, socket_id, mp, nb_desc);