[PATCH 3.16 163/366] xen-netfront: fix locking in connect error path

Ben Hutchings
2018-11-11T20:37:24Z

From: David Vrabel <david.vrabel@citrix.com>

commit db8c8ab61a28d7e3eb86d247b342a853263262c3 upstream.

If no queues could be created when connecting to the backend, one of the
error paths would deadlock.

Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/net/xen-netfront.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/xen-netfront.c
+++ b/drivers/net/xen-netfront.c
@@ -2000,7 +2000,7 @@ abort_transaction_no_dev_fatal:
info->queues = NULL;
rtnl_lock();
netif_set_real_num_tx_queues(info->netdev, 0);
- rtnl_lock();
+ rtnl_unlock();
out:
return err;
}