stack_expand      703 fs/exec.c      	unsigned long stack_expand;
stack_expand      775 fs/exec.c      	stack_expand = 131072UL; /* randomly 32*4k (or 2*64k) pages */
stack_expand      783 fs/exec.c      	if (stack_size + stack_expand > rlim_stack)
stack_expand      786 fs/exec.c      		stack_base = vma->vm_end + stack_expand;
stack_expand      788 fs/exec.c      	if (stack_size + stack_expand > rlim_stack)
stack_expand      791 fs/exec.c      		stack_base = vma->vm_start - stack_expand;