diff --git a/Source/WebCore/loader/FrameLoader.cpp b/Source/WebCore/loader/FrameLoader.cpp
index 2e9428d..774e8a2 100644
--- a/Source/WebCore/loader/FrameLoader.cpp
+++ b/Source/WebCore/loader/FrameLoader.cpp
@@ -1501,6 +1501,10 @@
     // If this method is called from within this method, infinite recursion can occur (3442218). Avoid this.
     if (m_inStopAllLoaders)
         return;
+    
+    // Calling stopLoading() on the provisional document loader can blow away
+    // the frame from underneath.
+    RefPtr<Frame> protect(m_frame);
 
     m_inStopAllLoaders = true;