diff -r e86d0ef45e21 Lib/asyncio/selector_events.py
--- a/Lib/asyncio/selector_events.py	Fri Jan 09 00:13:39 2015 +0100
+++ b/Lib/asyncio/selector_events.py	Fri Jan 09 01:11:36 2015 +0100
@@ -748,7 +748,7 @@ class _SelectorSslTransport(_SelectorTra
             self._loop.remove_reader(self._sock_fd)
             self._loop.remove_writer(self._sock_fd)
             self._sock.close()
-            if self._waiter is not None:
+            if self._waiter is not None and not self._waiter.cancelled():
                 self._waiter.set_exception(exc)
             if isinstance(exc, Exception):
                 return
@@ -772,7 +772,8 @@ class _SelectorSslTransport(_SelectorTra
                                        "on matching the hostname",
                                        self, exc_info=True)
                     self._sock.close()
-                    if self._waiter is not None:
+                    if (self._waiter is not None
+                    and not self._waiter.cancelled()):
                         self._waiter.set_exception(exc)
                     return
 
diff -r e86d0ef45e21 Lib/asyncio/subprocess.py
--- a/Lib/asyncio/subprocess.py	Fri Jan 09 00:13:39 2015 +0100
+++ b/Lib/asyncio/subprocess.py	Fri Jan 09 01:11:36 2015 +0100
@@ -60,7 +60,8 @@ class SubprocessStreamProtocol(streams.F
                                               protocol=self,
                                               reader=None,
                                               loop=self._loop)
-        self.waiter.set_result(None)
+        if not self.waiter.cancelled():
+            self.waiter.set_result(None)
 
     def pipe_data_received(self, fd, data):
         if fd == 1: