Don't store backfilled events using request context
@@ -503,7 +503,7 @@ func (r *messagesReq) backfill(roomID string, backwardsExtremities map[string][]
// up in responses to sync requests.
for i := range res.Events {
_, err = r.db.WriteEvent(
- r.ctx,
+ context.Background(),
&res.Events[i],
[]gomatrixserverlib.HeaderedEvent{},
[]string{},
