diff --git a/integration/volley/src/main/java/com/bumptech/glide/integration/volley/VolleyStreamFetcher.java b/integration/volley/src/main/java/com/bumptech/glide/integration/volley/VolleyStreamFetcher.java
index 97348ecc6e..3137fdcdbe 100644
--- a/integration/volley/src/main/java/com/bumptech/glide/integration/volley/VolleyStreamFetcher.java
+++ b/integration/volley/src/main/java/com/bumptech/glide/integration/volley/VolleyStreamFetcher.java
@@ -133,13 +133,17 @@ protected VolleyError parseNetworkError(VolleyError volleyError) {
       if (Log.isLoggable(TAG, Log.DEBUG)) {
         Log.d(TAG, "Volley failed to retrieve response", volleyError);
       }
-      callback.onLoadFailed(volleyError);
+      if (!isCanceled()) {
+        callback.onLoadFailed(volleyError);
+      }
       return super.parseNetworkError(volleyError);
     }
 
     @Override
     protected Response<byte[]> parseNetworkResponse(NetworkResponse response) {
-      callback.onDataReady(new ByteArrayInputStream(response.data));
+      if (!isCanceled()) {
+        callback.onDataReady(new ByteArrayInputStream(response.data));
+      }
       return Response.success(response.data, HttpHeaderParser.parseCacheHeaders(response));
     }
 
diff --git a/library/src/main/java/com/bumptech/glide/load/model/MultiModelLoader.java b/library/src/main/java/com/bumptech/glide/load/model/MultiModelLoader.java
index 443304fccb..fb9d7206a8 100644
--- a/library/src/main/java/com/bumptech/glide/load/model/MultiModelLoader.java
+++ b/library/src/main/java/com/bumptech/glide/load/model/MultiModelLoader.java
@@ -52,7 +52,7 @@ public LoadData<Data> buildLoadData(@NonNull Model model, int width, int height,
         }
       }
     }
-    return !fetchers.isEmpty()
+    return !fetchers.isEmpty() && sourceKey != null
         ? new LoadData<>(sourceKey, new MultiFetcher<>(fetchers, exceptionListPool)) : null;
   }
 
@@ -80,8 +80,10 @@ static class MultiFetcher<Data> implements DataFetcher<Data>, DataCallback<Data>
     private DataCallback<? super Data> callback;
     @Nullable
     private List<Throwable> exceptions;
+    private boolean isCancelled;
 
-    MultiFetcher(@NonNull List<DataFetcher<Data>> fetchers,
+    MultiFetcher(
+        @NonNull List<DataFetcher<Data>> fetchers,
         @NonNull Pool<List<Throwable>> throwableListPool) {
       this.throwableListPool = throwableListPool;
       Preconditions.checkNotEmpty(fetchers);
@@ -90,7 +92,8 @@ static class MultiFetcher<Data> implements DataFetcher<Data>, DataCallback<Data>
     }
 
     @Override
-    public void loadData(@NonNull Priority priority, @NonNull DataCallback<? super Data> callback) {
+    public synchronized void loadData(
+        @NonNull Priority priority, @NonNull DataCallback<? super Data> callback) {
       this.priority = priority;
       this.callback = callback;
       exceptions = throwableListPool.acquire();
@@ -98,7 +101,7 @@ public void loadData(@NonNull Priority priority, @NonNull DataCallback<? super D
     }
 
     @Override
-    public void cleanup() {
+    public synchronized void cleanup() {
       if (exceptions != null) {
         throwableListPool.release(exceptions);
       }
@@ -109,7 +112,8 @@ public void cleanup() {
     }
 
     @Override
-    public void cancel() {
+    public synchronized void cancel() {
+      isCancelled = true;
       for (DataFetcher<Data> fetcher : fetchers) {
         fetcher.cancel();
       }
@@ -128,7 +132,11 @@ public DataSource getDataSource() {
     }
 
     @Override
-    public void onDataReady(@Nullable Data data) {
+    public synchronized void onDataReady(@Nullable Data data) {
+      if (isCancelled) {
+        return;
+      }
+
       if (data != null) {
         callback.onDataReady(data);
       } else {
@@ -137,12 +145,20 @@ public void onDataReady(@Nullable Data data) {
     }
 
     @Override
-    public void onLoadFailed(@NonNull Exception e) {
+    public synchronized void onLoadFailed(@NonNull Exception e) {
+      if (isCancelled) {
+        return;
+      }
+
       Preconditions.checkNotNull(exceptions).add(e);
       startNextOrFail();
     }
 
     private void startNextOrFail() {
+      if (isCancelled) {
+        return;
+      }
+
       if (currentIndex < fetchers.size() - 1) {
         currentIndex++;
         loadData(priority, callback);