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ethdev: avoid undefined behaviour on configuration copy
[dpdk.git]
/
lib
/
librte_ethdev
/
rte_ethdev.c
diff --git
a/lib/librte_ethdev/rte_ethdev.c
b/lib/librte_ethdev/rte_ethdev.c
index
8f48e8d
..
8d2ce31
100644
(file)
--- a/
lib/librte_ethdev/rte_ethdev.c
+++ b/
lib/librte_ethdev/rte_ethdev.c
@@
-1245,7
+1245,9
@@
rte_eth_dev_configure(uint16_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
* Copy the dev_conf parameter into the dev structure.
* rte_eth_dev_info_get() requires dev_conf, copy it before dev_info get
*/
* Copy the dev_conf parameter into the dev structure.
* rte_eth_dev_info_get() requires dev_conf, copy it before dev_info get
*/
- memcpy(&dev->data->dev_conf, dev_conf, sizeof(dev->data->dev_conf));
+ if (dev_conf != &dev->data->dev_conf)
+ memcpy(&dev->data->dev_conf, dev_conf,
+ sizeof(dev->data->dev_conf));
ret = rte_eth_dev_info_get(port_id, &dev_info);
if (ret != 0)
ret = rte_eth_dev_info_get(port_id, &dev_info);
if (ret != 0)