Hold the ListLock while opening a device

Since it may rely on the enumerated device list that could be updated
asynchronously.

1 files changed, 2 insertions, 0 deletions

diff --git a/alc/alc.cpp b/alc/alc.cpp
index 1bb859f7..691b9274 100644
--- a/alc/alc.cpp
+++ b/alc/alc.cpp
@@ -3700,6 +3700,7 @@ START_API_FUNC
 
     try {
         auto backend = PlaybackFactory->createBackend(device.get(), BackendType::Playback);
+        std::lock_guard<std::recursive_mutex> _{ListLock};
         backend->open(deviceName);
         device->Backend = std::move(backend);
     }
@@ -3960,6 +3961,7 @@ START_API_FUNC
             device->Frequency, device->UpdateSize, device->BufferSize);
 
         auto backend = CaptureFactory->createBackend(device.get(), BackendType::Capture);
+        std::lock_guard<std::recursive_mutex> _{ListLock};
         backend->open(deviceName);
         device->Backend = std::move(backend);
     }