Index: lldb/source/Plugins/Process/NetBSD/NativeProcessNetBSD.cpp
===================================================================
--- lldb/source/Plugins/Process/NetBSD/NativeProcessNetBSD.cpp
+++ lldb/source/Plugins/Process/NetBSD/NativeProcessNetBSD.cpp
@@ -700,7 +700,7 @@
 
     bytes_read = io.piod_len;
     io.piod_len = size - bytes_read;
-  } while (bytes_read < size);
+  } while (bytes_read < size && bytes_read != 0);
 
   return Status();
 }