Don't accept opentracing data from clients. (#5715)

* Don't accept opentracing data from clients.

* newsfile

1 files changed, 1 insertions, 2 deletions

diff --git a/synapse/logging/opentracing.py b/synapse/logging/opentracing.py

index 415040f5ee..56d900080b 100644
--- a/synapse/logging/opentracing.py
+++ b/synapse/logging/opentracing.py
@@ -340,8 +340,7 @@ def trace_servlet(servlet_name, func):
     @wraps(func)
     @defer.inlineCallbacks
     def _trace_servlet_inner(request, *args, **kwargs):
-        with start_active_span_from_context(
-            request.requestHeaders,
+        with start_active_span(
             "incoming-client-request",
             tags={
                 "request_id": request.get_request_id(),