[dpdk-stable] [dpdk-dev] [PATCH v1] net/nfp: fix dangling pointer on failure

[wangyunjian <wangyunjian@huawei.com>]

From: Yunjian Wang <wangyunjian@huawei.com>

When nfp_pf_create_dev() is cleaning up, it does not correctly set
the dev_private variable to NULL, which will lead to a double free.

Fixes: ef28aa96e53b ("net/nfp: support multiprocess")
CC: stable@dpdk.org

Signed-off-by: Yunjian Wang <wangyunjian@huawei.com>
---
 drivers/net/nfp/nfp_net.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/nfp/nfp_net.c b/drivers/net/nfp/nfp_net.c
index 64d9d218d..6e24a09a2 100644
--- a/drivers/net/nfp/nfp_net.c
+++ b/drivers/net/nfp/nfp_net.c
@@ -3451,9 +3451,10 @@ nfp_pf_create_dev(struct rte_pci_device *dev, int port, int ports,
 probe_failed:
 	rte_free(port_name);
 	/* free ports private data if primary process */
-	if (rte_eal_process_type() == RTE_PROC_PRIMARY)
+	if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
 		rte_free(eth_dev->data->dev_private);
-
+		eth_dev->data->dev_private = NULL;
+	}
 	rte_eth_dev_release_port(eth_dev);
 
 	return retval;
-- 
2.19.1