Index: libomptarget/deviceRTLs/nvptx/src/data_sharing.cu
===================================================================
--- libomptarget/deviceRTLs/nvptx/src/data_sharing.cu
+++ libomptarget/deviceRTLs/nvptx/src/data_sharing.cu
@@ -88,7 +88,7 @@
 
   omptarget_nvptx_TeamDescr *teamDescr =
       &omptarget_nvptx_threadPrivateContext->TeamContext();
-  __kmpc_data_sharing_slot *RootS = teamDescr->RootS(WID);
+  __kmpc_data_sharing_slot *RootS = teamDescr->RootS(WID, IsMasterThread());
 
   DataSharingState.SlotPtr[WID] = RootS;
   DataSharingState.StackPtr[WID] = (void *)&RootS->Data[0];
@@ -340,7 +340,7 @@
   unsigned WID = getWarpId();
   omptarget_nvptx_TeamDescr *teamDescr =
       &omptarget_nvptx_threadPrivateContext->TeamContext();
-  __kmpc_data_sharing_slot *RootS = teamDescr->RootS(WID);
+  __kmpc_data_sharing_slot *RootS = teamDescr->RootS(WID, IsMasterThread());
 
   DataSharingState.SlotPtr[WID] = RootS;
   DataSharingState.TailPtr[WID] = RootS;
Index: libomptarget/deviceRTLs/nvptx/src/omptarget-nvptx.h
===================================================================
--- libomptarget/deviceRTLs/nvptx/src/omptarget-nvptx.h
+++ libomptarget/deviceRTLs/nvptx/src/omptarget-nvptx.h
@@ -259,10 +259,10 @@
   // init
   INLINE void InitTeamDescr();
 
-  INLINE __kmpc_data_sharing_slot *RootS(int wid) {
+  INLINE __kmpc_data_sharing_slot *RootS(int wid, bool IsMasterThread) {
     // If this is invoked by the master thread of the master warp then intialize
     // it with a smaller slot.
-    if (wid == WARPSIZE - 1) {
+    if (IsMasterThread) {
       // Initialize the pointer to the end of the slot given the size of the
       // data section. DataEnd is non-inclusive.
       master_rootS[0].DataEnd = &master_rootS[0].Data[0] + DS_Slot_Size;
Index: libomptarget/deviceRTLs/nvptx/src/omptarget-nvptx.cu
===================================================================
--- libomptarget/deviceRTLs/nvptx/src/omptarget-nvptx.cu
+++ libomptarget/deviceRTLs/nvptx/src/omptarget-nvptx.cu
@@ -168,7 +168,8 @@
   if (RequiresDataSharing && threadId % WARPSIZE == 0) {
     // Warp master innitializes data sharing environment.
     unsigned WID = threadId / WARPSIZE;
-    __kmpc_data_sharing_slot *RootS = currTeamDescr.RootS(WID);
+    __kmpc_data_sharing_slot *RootS = currTeamDescr.RootS(
+        WID, WID == WARPSIZE - 1);
     DataSharingState.SlotPtr[WID] = RootS;
     DataSharingState.StackPtr[WID] = (void *)&RootS->Data[0];
   }