The current code assumes that there is always a vfio group, but that's no longer guaranteed with the iommufd backend when using cdev. In this case, we don't need to track the vfio dma limit anyway.
Signed-off-by: Matthew Rosato <mjros...@linux.ibm.com> --- hw/s390x/s390-pci-vfio.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/hw/s390x/s390-pci-vfio.c b/hw/s390x/s390-pci-vfio.c index 59a2e03873..7218583883 100644 --- a/hw/s390x/s390-pci-vfio.c +++ b/hw/s390x/s390-pci-vfio.c @@ -66,7 +66,11 @@ S390PCIDMACount *s390_pci_start_dma_count(S390pciState *s, assert(vpdev); - id = vpdev->vbasedev.group->container->fd; + if (vpdev->vbasedev.group) { + id = vpdev->vbasedev.group->container->fd; + } else { + return NULL; + } if (!s390_pci_update_dma_avail(id, &avail)) { return NULL; -- 2.41.0