This mutex should not have been made local, thanks @unknownbrackets

Core/FileSystems/BlockDevices.cpp

@@ -30,6 +30,8 @@ extern "C"
 #include "ext/libkirk/kirk_engine.h"
 };
 
+std::mutex NPDRMDemoBlockDevice::mutex_;
+
 BlockDevice *constructBlockDevice(FileLoader *fileLoader) {
 	// Check for CISO
 	if (!fileLoader->Exists())

Core/FileSystems/BlockDevices.h

@@ -105,7 +105,7 @@ public:
 
 private:
 	FileLoader *fileLoader_;
-	std::mutex mutex_;
+	static std::mutex mutex_;
 	u32 lbaSize;
 
 	u32 psarOffset;