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-rw-r--r--synapse/__init__.py2
-rw-r--r--synapse/handlers/events.py11
-rw-r--r--synapse/storage/registration.py2
3 files changed, 10 insertions, 5 deletions
diff --git a/synapse/__init__.py b/synapse/__init__.py
index c357f8f9c2..e07c26ccd0 100644
--- a/synapse/__init__.py
+++ b/synapse/__init__.py
@@ -16,4 +16,4 @@
 """ This is a reference implementation of a Matrix home server.
 """
 
-__version__ = "0.12.0-rc1"
+__version__ = "0.12.0-rc2"
diff --git a/synapse/handlers/events.py b/synapse/handlers/events.py
index fe300433e6..576d77e0e7 100644
--- a/synapse/handlers/events.py
+++ b/synapse/handlers/events.py
@@ -69,7 +69,12 @@ class EventStreamHandler(BaseHandler):
             A deferred that completes once their presence has been updated.
         """
         if user not in self._streams_per_user:
-            self._streams_per_user[user] = 0
+            # Make sure we set the streams per user to 1 here rather than
+            # setting it to zero and incrementing the value below.
+            # Otherwise this may race with stopped_stream causing the
+            # user to be erased from the map before we have a chance
+            # to increment it.
+            self._streams_per_user[user] = 1
             if user in self._stop_timer_per_user:
                 try:
                     self.clock.cancel_call_later(
@@ -79,8 +84,8 @@ class EventStreamHandler(BaseHandler):
                     logger.exception("Failed to cancel event timer")
             else:
                 yield started_user_eventstream(self.distributor, user)
-
-        self._streams_per_user[user] += 1
+        else:
+            self._streams_per_user[user] += 1
 
     def stopped_stream(self, user):
         """If there are no streams for a user this starts a timer that will
diff --git a/synapse/storage/registration.py b/synapse/storage/registration.py
index 2e5eddd259..09a05b08ef 100644
--- a/synapse/storage/registration.py
+++ b/synapse/storage/registration.py
@@ -258,10 +258,10 @@ class RegistrationStore(SQLBaseStore):
     @defer.inlineCallbacks
     def user_add_threepid(self, user_id, medium, address, validated_at, added_at):
         yield self._simple_upsert("user_threepids", {
-            "user_id": user_id,
             "medium": medium,
             "address": address,
         }, {
+            "user_id": user_id,
             "validated_at": validated_at,
             "added_at": added_at,
         })