1 files changed, 7 insertions, 0 deletions

diff --git a/mm/mmap.c b/mm/mmap.c
index 9717337293c3..cc3a20819457 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1477,6 +1477,7 @@ static int acct_stack_growth(struct vm_area_struct * vma, unsigned long size, un
 {
         struct mm_struct *mm = vma->vm_mm;
         struct rlimit *rlim = current->signal->rlim;
+        unsigned long new_start;
 
         /* address space limit tests */
         if (!may_expand_vm(mm, grow))
@@ -1496,6 +1497,12 @@ static int acct_stack_growth(struct vm_area_struct * vma, unsigned long size, un
                         return -ENOMEM;
         }
 
+        /* Check to ensure the stack will not grow into a hugetlb-only region */
+        new_start = (vma->vm_flags & VM_GROWSUP) ? vma->vm_start :
+                        vma->vm_end - size;
+        if (is_hugepage_only_range(vma->vm_mm, new_start, size))
+                return -EFAULT;
+
         /*
          * Overcommit..  This must be the final test, as it will
          * update security statistics.