diff --git a/projects/clr/rocclr/runtime/device/gpu/gpudevice.cpp b/projects/clr/rocclr/runtime/device/gpu/gpudevice.cpp
index 84858beb3a..6eb98503df 100644
--- a/projects/clr/rocclr/runtime/device/gpu/gpudevice.cpp
+++ b/projects/clr/rocclr/runtime/device/gpu/gpudevice.cpp
@@ -366,6 +366,7 @@ Device::Device()
     , lockAsyncOpsForInitHeap_(NULL)
     , vgpusAccess_(NULL)
     , scratchAlloc_(NULL)
+    , mapCacheOps_(NULL)
     , xferRead_(NULL)
     , xferWrite_(NULL)
     , vaCacheAccess_(NULL)
@@ -427,6 +428,7 @@ Device::~Device()
     delete lockAsyncOpsForInitHeap_;
     delete vgpusAccess_;
     delete scratchAlloc_;
+    delete mapCacheOps_;
     delete vaCacheAccess_;
     delete vaCacheList_;
 
@@ -801,6 +803,11 @@ Device::create(CALuint ordinal)
         return false;
     }
 
+    mapCacheOps_ = new amd::Monitor("Map Cache Lock", true);
+    if (NULL == scratchAlloc_) {
+        return false;
+    }
+
     vaCacheAccess_ = new amd::Monitor("VA Cache Ops Lock", true);
     if (NULL == vaCacheAccess_) {
         return false;
@@ -2190,8 +2197,8 @@ Device::findMemoryFromVA(const void* ptr, size_t* offset) const
 amd::Memory*
 Device::findMapTarget(size_t size) const
 {
-    // Must be serialised. Global async is too conservative
-    amd::ScopedLock lk(*lockAsyncOps_);
+    // Must be serialised for access
+    amd::ScopedLock lk(*mapCacheOps_);
 
     amd::Memory*    map = NULL;
     size_t          minSize = 0;
@@ -2250,8 +2257,8 @@ Device::findMapTarget(size_t size) const
 bool
 Device::addMapTarget(amd::Memory* memory) const
 {
-    // Must be serialised. Global async is too conservative
-    amd::ScopedLock lk(*lockAsyncOps_);
+    // Must be serialised for access
+    amd::ScopedLock lk(*mapCacheOps_);
 
     //the svm memory shouldn't be cached
     if (!memory->canBeCached()) {
diff --git a/projects/clr/rocclr/runtime/device/gpu/gpudevice.hpp b/projects/clr/rocclr/runtime/device/gpu/gpudevice.hpp
index c5657e4cb2..a3ca8f92f3 100644
--- a/projects/clr/rocclr/runtime/device/gpu/gpudevice.hpp
+++ b/projects/clr/rocclr/runtime/device/gpu/gpudevice.hpp
@@ -610,6 +610,7 @@ private:
     amd::Monitor*   lockAsyncOpsForInitHeap_;  //!< Lock to serialise all async ops on initialization heap operation
     amd::Monitor*   vgpusAccess_;   //!< Lock to serialise virtual gpu list access
     amd::Monitor*   scratchAlloc_;  //!< Lock to serialise scratch allocation
+    amd::Monitor*   mapCacheOps_;   //!< Lock to serialise cache for the map resources
 
     XferBuffers*    xferRead_;      //!< Transfer buffers read
     XferBuffers*    xferWrite_;     //!< Transfer buffers write