Prevent race in windows platform binary view initialization

1 files changed, 3 insertions, 0 deletions

diff --git a/platform/windows/platform_windows.cpp b/platform/windows/platform_windows.cpp
index 0c33bbee..b4b7c55d 100644
--- a/platform/windows/platform_windows.cpp
+++ b/platform/windows/platform_windows.cpp
@@ -9,6 +9,7 @@ class WindowsX86Platform: public Platform
 {
 	uint32_t m_fsbase;
 	Ref<Type> m_teb;
+	std::mutex m_tebMutex;
 
 public:
 	WindowsX86Platform(Architecture* arch): Platform(arch, "windows-x86")
@@ -45,6 +46,8 @@ public:
 
 	virtual void BinaryViewInit(BinaryView* view) override
 	{
+		// Locking here so that if we have two views in BinaryViewInit at once we don't race to init m_teb.
+		std::lock_guard<std::mutex> lock(m_tebMutex);
 		if (!m_teb)
 			m_teb = Type::PointerType(GetArchitecture()->GetAddressSize(), Type::NamedType(QualifiedName("TEB"), GetTypeByName(QualifiedName("TEB"))));
 	}