diff options
| -rw-r--r-- | hw/virtio/virtio-pci.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c index 883045a223..4a3dcee771 100644 --- a/hw/virtio/virtio-pci.c +++ b/hw/virtio/virtio-pci.c @@ -1364,9 +1364,14 @@ static uint64_t virtio_pci_isr_read(void *opaque, hwaddr addr, { VirtIOPCIProxy *proxy = opaque; VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus); - uint64_t val = qatomic_xchg(&vdev->isr, 0); - pci_irq_deassert(&proxy->pci_dev); + uint64_t val; + + if (vdev == NULL) { + return 0; + } + val = qatomic_xchg(&vdev->isr, 0); + pci_irq_deassert(&proxy->pci_dev); return val; } |