Check for fd == -1 there. Signed-off-by: Juergen Lock <n...@jelal.kn-bremen.de>
--- a/net/tap.c +++ b/net/tap.c @@ -400,6 +400,9 @@ int net_init_tap(QemuOpts *opts, Monitor } fd = net_tap_init(opts, &vnet_hdr); + if (fd == -1) { + return -1; + } } s = net_tap_fd_init(vlan, "tap", name, fd, vnet_hdr);