vfio/pci-quirks: Exclude non-ioport BAR from NVIDIA quirk

The NVIDIA BAR5 quirk is targeting an ioport BAR. Some older devices have a BAR5 which is not ioport and can induce a segfault here. Test the BAR type to skip these devices. Link: https://bugs.launchpad.net/qemu/+bug/1678466 Signed-off-by: Alex Williamson <[email protected]>
BruceZu · Apr 6, 2017 · 8f419c5 · 8f419c5
1 parent 54d6899
commit 8f419c5
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/hw/vfio/pci-quirks.c b/hw/vfio/pci-quirks.c
@@ -660,7 +660,7 @@ static void vfio_probe_nvidia_bar5_quirk(VFIOPCIDevice *vdev, int nr)
     VFIOConfigWindowQuirk *window;
 
     if (!vfio_pci_is(vdev, PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID) ||
-        !vdev->vga || nr != 5) {
+        !vdev->vga || nr != 5 || !vdev->bars[5].ioport) {
         return;
     }