diff --git a/block/qed-check.c b/block/qed-check.c
index b473dcd61f..40a882cc93 100644
--- a/block/qed-check.c
+++ b/block/qed-check.c
@@ -227,8 +227,11 @@ int qed_check(BDRVQEDState *s, BdrvCheckResult *result, bool fix)
     };
     int ret;
 
-    check.used_clusters = g_malloc0(((check.nclusters + 31) / 32) *
-                                       sizeof(check.used_clusters[0]));
+    check.used_clusters = g_try_malloc0(((check.nclusters + 31) / 32) *
+                                        sizeof(check.used_clusters[0]));
+    if (check.nclusters && check.used_clusters == NULL) {
+        return -ENOMEM;
+    }
 
     check.result->bfi.total_clusters =
         (s->header.image_size + s->header.cluster_size - 1) /
diff --git a/block/qed.c b/block/qed.c
index 7944832181..ba395af76a 100644
--- a/block/qed.c
+++ b/block/qed.c
@@ -1240,7 +1240,11 @@ static void qed_aio_write_inplace(QEDAIOCB *acb, uint64_t offset, size_t len)
         struct iovec *iov = acb->qiov->iov;
 
         if (!iov->iov_base) {
-            iov->iov_base = qemu_blockalign(acb->common.bs, iov->iov_len);
+            iov->iov_base = qemu_try_blockalign(acb->common.bs, iov->iov_len);
+            if (iov->iov_base == NULL) {
+                qed_aio_complete(acb, -ENOMEM);
+                return;
+            }
             memset(iov->iov_base, 0, iov->iov_len);
         }
     }