From 167bdce48d1656569cf63448fc2328800288c38f Mon Sep 17 00:00:00 2001
From: Chris Robinson <chris.kcat@gmail.com>
Date: Mon, 30 Mar 2020 13:50:50 -0700
Subject: Hold the ListLock while opening a device

Since it may rely on the enumerated device list that could be updated
asynchronously.
---
 alc/alc.cpp | 2 ++
 1 file changed, 2 insertions(+)

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);
     }
-- 
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