diff --git a/arch/arm/src/armv7-a/arm_addrenv.c b/arch/arm/src/armv7-a/arm_addrenv.c
index fe765a1820..bdb6c291d1 100644
--- a/arch/arm/src/armv7-a/arm_addrenv.c
+++ b/arch/arm/src/armv7-a/arm_addrenv.c
@@ -329,7 +329,10 @@ static void up_addrenv_destroy_region(FAR uintptr_t **list,
  *   textsize - The size (in bytes) of the .text address environment needed
  *     by the task.  This region may be read/execute only.
  *   datasize - The size (in bytes) of the .data/.bss address environment
- *     needed by the task.  This region may be read/write only.
+ *     needed by the task.  This region may be read/write only.  NOTE: The
+ *     actual size of the data region that is allocated will include a
+ *     OS private reserved region at the beginning.  The size of the
+ *     private, reserved region is give by ARCH_DATA_RESERVE.
  *   addrenv - The location to return the representation of the task address
  *     environment.
  *
@@ -368,10 +371,14 @@ int up_addrenv_create(size_t textsize, size_t datasize,
       goto errout;
     }
 
-  /* Allocate .bss/.data space pages */
+  /* Allocate .bss/.data space pages.  NOTE that a configurable offset is
+   * added to the allocted size.  This is matched by the offset that is
+   * used when reporting the virtual data address in up_addrenv_vdata().
+   */
 
   ret = up_addrenv_create_region(addrenv->data, ARCH_DATA_NSECTS,
-                                 CONFIG_ARCH_DATA_VBASE, datasize,
+                                 CONFIG_ARCH_DATA_VBASE,
+                                 datasize + ARCH_DATA_RESERVE,
                                  MMU_L2_UDATAFLAGS);
   if (ret < 0)
     {
@@ -488,7 +495,7 @@ int up_addrenv_vdata(FAR group_addrenv_t *addrenv, uintptr_t textsize,
   /* Not much to do in this case */
 
   DEBUGASSERT(addrenv && vdata);
-  *vdata = (FAR void *)CONFIG_ARCH_DATA_VBASE;
+  *vdata = (FAR void *)(CONFIG_ARCH_DATA_VBASE + ARCH_DATA_RESERVE);
   return OK;
 }