diff options
| -rw-r--r-- | hw/core/qdev-properties.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/hw/core/qdev-properties.c b/hw/core/qdev-properties.c index 311af6da76..2a82768067 100644 --- a/hw/core/qdev-properties.c +++ b/hw/core/qdev-properties.c @@ -705,13 +705,19 @@ static void get_pci_host_devaddr(Object *obj, Visitor *v, const char *name, DeviceState *dev = DEVICE(obj); Property *prop = opaque; PCIHostDeviceAddress *addr = qdev_get_prop_ptr(dev, prop); - char buffer[] = "xxxx:xx:xx.x"; + char buffer[] = "ffff:ff:ff.f"; char *p = buffer; int rc = 0; - rc = snprintf(buffer, sizeof(buffer), "%04x:%02x:%02x.%d", - addr->domain, addr->bus, addr->slot, addr->function); - assert(rc == sizeof(buffer) - 1); + /* + * Catch "invalid" device reference from vfio-pci and allow the + * default buffer representing the non-existant device to be used. + */ + if (~addr->domain || ~addr->bus || ~addr->slot || ~addr->function) { + rc = snprintf(buffer, sizeof(buffer), "%04x:%02x:%02x.%0d", + addr->domain, addr->bus, addr->slot, addr->function); + assert(rc == sizeof(buffer) - 1); + } visit_type_str(v, name, &p, errp); } |