--- a/dom/media/doctor/DecoderDoctorLogger.cpp
+++ b/dom/media/doctor/DecoderDoctorLogger.cpp
@@ -9,17 +9,17 @@
 #include "DDLogUtils.h"
 #include "DDMediaLogs.h"
 #include "mozilla/ClearOnShutdown.h"
 #include "mozilla/SystemGroup.h"
 #include "mozilla/Unused.h"
 
 namespace mozilla {
 
-/* static */ Atomic<DecoderDoctorLogger::LogState>
+/* static */ Atomic<DecoderDoctorLogger::LogState, ReleaseAcquire>
   DecoderDoctorLogger::sLogState{ DecoderDoctorLogger::scDisabled };
 
 /* static */ const char* DecoderDoctorLogger::sShutdownReason = nullptr;
 
 static DDMediaLogs* sMediaLogs;
 
 // First DDLogShutdowner sets sLogState to scShutdown, to prevent further
 // logging.

--- a/dom/media/doctor/DecoderDoctorLogger.h
+++ b/dom/media/doctor/DecoderDoctorLogger.h
@@ -341,17 +341,19 @@ private:
   // Currently enabled (logging happens), may be shutdown.
   static constexpr LogState scEnabled = 1;
   // Still disabled, but one thread is working on enabling it, nobody else
   // should interfere during this time.
   static constexpr LogState scEnabling = 2;
   // Shutdown, cannot be re-enabled.
   static constexpr LogState scShutdown = 3;
   // Current state.
-  static Atomic<LogState> sLogState;
+  // "ReleaseAcquire" because when changing to scEnabled, the just-created
+  // sMediaLogs must be accessible to consumers that see scEnabled.
+  static Atomic<LogState, ReleaseAcquire> sLogState;
 
   // If non-null, reason for an abnormal shutdown.
   static const char* sShutdownReason;
 };
 
 // Base class to automatically record a class lifetime. Usage:
 //   class SomeClass : public DecoderDoctorLifeLogger<SomeClass>
 //   {