1 files changed, 4 insertions, 2 deletions
diff --git a/memory.c b/memory.c
index 8141486832..c90a2cf629 100644
--- a/memory.c
+++ b/memory.c
@@ -1942,16 +1942,18 @@ void memory_region_notify_one(IOMMUNotifier *notifier,
                               IOMMUTLBEntry *entry)
 {
     IOMMUNotifierFlag request_flags;
+    hwaddr entry_end = entry->iova + entry->addr_mask;
 
     /*
      * Skip the notification if the notification does not overlap
      * with registered range.
      */
-    if (notifier->start > entry->iova + entry->addr_mask ||
-        notifier->end < entry->iova) {
+    if (notifier->start > entry_end || notifier->end < entry->iova) {
         return;
     }
 
+    assert(entry->iova >= notifier->start && entry_end <= notifier->end);
+
     if (entry->perm & IOMMU_RW) {
         request_flags = IOMMU_NOTIFIER_MAP;
     } else {