Commit d0a0bfe6 authored by Amit Shah's avatar Amit Shah

virtio-serial: search for duplicate port names before adding new ports

Before adding new ports to VirtIOSerial devices, check if there's a
conflict in the 'name' parameter.  This ensures two virtserialports with
identical names are not initialized.

Reported-by: <>
Signed-off-by: default avatarAmit Shah <>
Reviewed-by: default avatarMarkus Armbruster <>
parent a1857ad1
......@@ -56,6 +56,22 @@ static VirtIOSerialPort *find_port_by_vq(VirtIOSerial *vser, VirtQueue *vq)
return NULL;
static VirtIOSerialPort *find_port_by_name(char *name)
VirtIOSerial *vser;
QLIST_FOREACH(vser, &vserdevices.devices, next) {
VirtIOSerialPort *port;
QTAILQ_FOREACH(port, &vser->ports, next) {
if (!strcmp(port->name, name)) {
return port;
return NULL;
static bool use_multiport(VirtIOSerial *vser)
VirtIODevice *vdev = VIRTIO_DEVICE(vser);
......@@ -855,6 +871,12 @@ static void virtser_port_device_realize(DeviceState *dev, Error **errp)
if (find_port_by_name(port->name)) {
error_setg(errp, "virtio-serial-bus: A port already exists by name %s",
if (port->id == VIRTIO_CONSOLE_BAD_ID) {
if (plugging_port0) {
port->id = 0;
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