Hold mPropLock when deferring updates

1 files changed, 6 insertions, 0 deletions

diff --git a/alc/alc.cpp b/alc/alc.cpp
index 82e31667..1659593f 100644
--- a/alc/alc.cpp
+++ b/alc/alc.cpp
@@ -2292,7 +2292,10 @@ START_API_FUNC
     if(!ctx)
         alcSetError(nullptr, ALC_INVALID_CONTEXT);
     else
+    {
+        std::lock_guard<std::mutex> _{ctx->mPropLock};
         ctx->deferUpdates();
+    }
 }
 END_API_FUNC
 
@@ -2306,7 +2309,10 @@ START_API_FUNC
     if(!ctx)
         alcSetError(nullptr, ALC_INVALID_CONTEXT);
     else
+    {
+        std::lock_guard<std::mutex> _{ctx->mPropLock};
         ctx->processUpdates();
+    }
 }
 END_API_FUNC