diff options
| -rw-r--r-- | hw/virtio/virtio-pci.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c index 1bef7a2be8..c0d9c47df7 100644 --- a/hw/virtio/virtio-pci.c +++ b/hw/virtio/virtio-pci.c @@ -424,6 +424,11 @@ static uint64_t virtio_pci_config_read(void *opaque, hwaddr addr, VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus); uint32_t config = VIRTIO_PCI_CONFIG_SIZE(&proxy->pci_dev); uint64_t val = 0; + + if (vdev == NULL) { + return UINT64_MAX; + } + if (addr < config) { return virtio_ioport_read(proxy, addr); } @@ -455,6 +460,11 @@ static void virtio_pci_config_write(void *opaque, hwaddr addr, VirtIOPCIProxy *proxy = opaque; uint32_t config = VIRTIO_PCI_CONFIG_SIZE(&proxy->pci_dev); VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus); + + if (vdev == NULL) { + return; + } + if (addr < config) { virtio_ioport_write(proxy, addr, val); return; |