vfio_listener_region_add for a iommu mr results in an overflow assert since emulated iommu memory region is initialized with UINT64_MAX. Add a check just like memory_region_size() does.
Signed-off-by: Bandan Das <b...@redhat.com> --- hw/vfio/common.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/hw/vfio/common.c b/hw/vfio/common.c index fb588d8..269244b 100644 --- a/hw/vfio/common.c +++ b/hw/vfio/common.c @@ -349,7 +349,12 @@ static void vfio_listener_region_add(MemoryListener *listener, if (int128_ge(int128_make64(iova), llend)) { return; } - end = int128_get64(llend); + + if (int128_eq(llend, int128_2_64())) { + end = UINT64_MAX; + } else { + end = int128_get64(llend); + } if ((iova < container->min_iova) || ((end - 1) > container->max_iova)) { error_report("vfio: IOMMU container %p can't map guest IOVA region" -- 2.7.0