net/virtio: fix dangling pointer on failure

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

Found during unit-test fixes.

Fixes: 43d18765c027 ("net/virtio: fix memory leak on failure")
Cc: stable@dpdk.org
Reported-by: Michael Santana <msantana@redhat.com>
Signed-off-by: Aaron Conole <aconole@redhat.com>
Reviewed-by: Tiwei Bie <tiwei.bie@intel.com>

diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/virtio_ethdev.c
index 2272bb2..d25c08f 100644 (file)
--- a/drivers/net/virtio/virtio_ethdev.c
+++ b/drivers/net/virtio/virtio_ethdev.c
@@ -1862,6 +1862,7 @@ eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
 
 out:
        rte_free(eth_dev->data->mac_addrs);
+       eth_dev->data->mac_addrs = NULL;
        return ret;
 }