From d8517da85b3057e186087de146f546de52d7e206 Mon Sep 17 00:00:00 2001
From: Erik Johnston <erik@matrix.org>
Date: Fri, 6 Sep 2019 10:07:12 +0100
Subject: [PATCH 1/3] Don't assume there is a 'self' arg in @trace decorator

---
 synapse/logging/opentracing.py | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/synapse/logging/opentracing.py b/synapse/logging/opentracing.py
index 8c574ddd2851..72462530182c 100644
--- a/synapse/logging/opentracing.py
+++ b/synapse/logging/opentracing.py
@@ -702,15 +702,15 @@ def decorator(func):
         _opname = opname if opname else func.__name__
 
         @wraps(func)
-        def _trace_inner(self, *args, **kwargs):
+        def _trace_inner(*args, **kwargs):
             if opentracing is None:
-                return func(self, *args, **kwargs)
+                return func(*args, **kwargs)
 
             scope = start_active_span(_opname)
             scope.__enter__()
 
             try:
-                result = func(self, *args, **kwargs)
+                result = func(*args, **kwargs)
                 if isinstance(result, defer.Deferred):
 
                     def call_back(result):
@@ -750,13 +750,13 @@ def tag_args(func):
         return func
 
     @wraps(func)
-    def _tag_args_inner(self, *args, **kwargs):
+    def _tag_args_inner(*args, **kwargs):
         argspec = inspect.getargspec(func)
         for i, arg in enumerate(argspec.args[1:]):
             set_tag("ARG_" + arg, args[i])
         set_tag("args", args[len(argspec.args) :])
         set_tag("kwargs", kwargs)
-        return func(self, *args, **kwargs)
+        return func(*args, **kwargs)
 
     return _tag_args_inner
 

From 4bc6b7130d60005d21ce9be16682c13e90447430 Mon Sep 17 00:00:00 2001
From: Erik Johnston <erik@matrix.org>
Date: Fri, 6 Sep 2019 10:13:10 +0100
Subject: [PATCH 2/3] Newsfile

---
 changelog.d/5991.bugfix | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 changelog.d/5991.bugfix

diff --git a/changelog.d/5991.bugfix b/changelog.d/5991.bugfix
new file mode 100644
index 000000000000..b5ba2f9e4683
--- /dev/null
+++ b/changelog.d/5991.bugfix
@@ -0,0 +1 @@
+Fix broken replication requests when opentracing is enabled.

From e5baf80237b1ac2dbaac43b623ab75d1b5c8185a Mon Sep 17 00:00:00 2001
From: Erik Johnston <erik@matrix.org>
Date: Fri, 6 Sep 2019 10:53:05 +0100
Subject: [PATCH 3/3] Update changelog

---
 changelog.d/5991.bugfix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/changelog.d/5991.bugfix b/changelog.d/5991.bugfix
index b5ba2f9e4683..5c3597cb53c6 100644
--- a/changelog.d/5991.bugfix
+++ b/changelog.d/5991.bugfix
@@ -1 +1 @@
-Fix broken replication requests when opentracing is enabled.
+Fix invalid references to None while opentracing if the log context slips.