diff options
| -rw-r--r-- | hw/net/xen_nic.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/hw/net/xen_nic.c b/hw/net/xen_nic.c index 63918ae1a0..7a57feb29b 100644 --- a/hw/net/xen_nic.c +++ b/hw/net/xen_nic.c @@ -370,11 +370,16 @@ static int net_connect(struct XenDevice *xendev) netdev->xendev.dom, netdev->tx_ring_ref, PROT_READ | PROT_WRITE); + if (!netdev->txs) { + return -1; + } netdev->rxs = xc_gnttab_map_grant_ref(netdev->xendev.gnttabdev, netdev->xendev.dom, netdev->rx_ring_ref, PROT_READ | PROT_WRITE); - if (!netdev->txs || !netdev->rxs) { + if (!netdev->rxs) { + xc_gnttab_munmap(netdev->xendev.gnttabdev, netdev->txs, 1); + netdev->txs = NULL; return -1; } BACK_RING_INIT(&netdev->tx_ring, netdev->txs, XC_PAGE_SIZE); |