2.6.24.1-rc1

 mm

diff --git a/mm/mmap.c b/mm/mmap.c
index 15678aa..555b3e7 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -2215,7 +2215,7 @@ int install_special_mapping(struct mm_struct *mm,
    vma->vm_start = addr;
    vma->vm_end = addr + len;
 
-   vma->vm_flags = vm_flags | mm->def_flags;
+   vma->vm_flags = vm_flags | mm->def_flags | VM_DONTEXPAND;
    vma->vm_page_prot = vm_get_page_prot(vma->vm_flags);
 
    vma->vm_ops = &special_mapping_vmops;