diff --git a/mm/mmap.c b/mm/mmap.c
index 5f2b2b184c604b203f38142d8e638db87487f5f4..f7cd9cb966c0fb5892e28bb24ec98bc3d85d9768 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1410,7 +1410,7 @@ unsigned long do_mmap(struct file *file, unsigned long addr,
 	if (flags & MAP_FIXED_NOREPLACE) {
 		struct vm_area_struct *vma = find_vma(mm, addr);
 
-		if (vma && vma->vm_start <= addr)
+		if (vma && vma->vm_start < addr + len)
 			return -EEXIST;
 	}