diff --git a/rpcs3/util/vm.hpp b/rpcs3/util/vm.hpp
index c7ee241618..ab8aa20896 100644
--- a/rpcs3/util/vm.hpp
+++ b/rpcs3/util/vm.hpp
@@ -1,6 +1,7 @@
 #pragma once
 
 #include "util/types.hpp"
+#include "util/atomic.hpp"
 
 namespace utils
 {
@@ -52,7 +53,7 @@ namespace utils
 #endif
 		u32 m_size;
 		u32 m_flags;
-		void* m_ptr;
+		atomic_t<void*> m_ptr;
 
 	public:
 		explicit shm(u32 size, u32 flags = 0);
@@ -84,7 +85,7 @@ namespace utils
 		// Get memory mapped by map_self()
 		u8* get() const
 		{
-			return reinterpret_cast<u8*>(m_ptr);
+			return static_cast<u8*>(+m_ptr);
 		}
 
 		u32 size() const
diff --git a/rpcs3/util/vm_native.cpp b/rpcs3/util/vm_native.cpp
index 9e273a662a..d174bbf11a 100644
--- a/rpcs3/util/vm_native.cpp
+++ b/rpcs3/util/vm_native.cpp
@@ -218,7 +218,7 @@ namespace utils
 	shm::shm(u32 size, u32 flags)
 		: m_size(utils::align(size, 0x10000))
 		, m_flags(flags)
-		, m_ptr(0)
+		, m_ptr(nullptr)
 	{
 #ifdef _WIN32
 		m_handle = ::CreateFileMappingW(INVALID_HANDLE_VALUE, NULL, PAGE_EXECUTE_READWRITE, 0, m_size, NULL);
@@ -362,12 +362,21 @@ namespace utils
 
 	u8* shm::map_self(protection prot)
 	{
-		if (!m_ptr)
+		void* ptr = m_ptr;
+
+		if (!ptr)
 		{
-			m_ptr = this->map(nullptr, prot);
+			const auto mapped = this->map(nullptr, prot);
+
+			// Install mapped memory
+			if (!m_ptr.compare_exchange(ptr, mapped))
+			{
+				// Mapped already, nothing to do.
+				this->unmap(mapped);
+			}
 		}
 
-		return static_cast<u8*>(m_ptr);
+		return static_cast<u8*>(ptr);
 	}
 
 	void shm::unmap(void* ptr) const
@@ -414,10 +423,9 @@ namespace utils
 
 	void shm::unmap_self()
 	{
-		if (m_ptr)
+		if (auto ptr = m_ptr.exchange(nullptr))
 		{
-			this->unmap(m_ptr);
-			m_ptr = nullptr;
+			this->unmap(ptr);
 		}
 	}
 }