1 files changed, 1 insertions, 1 deletions
diff --git a/block/iscsi.c b/block/iscsi.c
index cbd57294ab..c8feaa2f0e 100644
--- a/block/iscsi.c
+++ b/block/iscsi.c
@@ -753,7 +753,7 @@ retry:
     }
 
     lbas = scsi_datain_unmarshall(iTask.task);
-    if (lbas == NULL) {
+    if (lbas == NULL || lbas->num_descriptors == 0) {
         ret = -EIO;
         goto out_unlock;
     }