When map 'netdev->rxs' fails, need free the original resource, or will
cause resource leak.
Signed-off-by: Chen Gang <gang.chen.5...@gmail.com>
---
hw/net/xen_nic.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/hw/net/xen_nic.c b/hw/net/xen_nic.c
index 63918ae..7a57feb 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);
--
1.9.3
