diff --git a/mm/mmap.c b/mm/mmap.c
index 2def55555e05f..c3c5c1d6103d1 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -2674,6 +2674,8 @@ unsigned long mmap_region(struct file *file, unsigned long addr,
 		error = -EINVAL;
 		if (file)
 			goto close_and_free_vma;
+		else if (vma->vm_file)
+			goto unmap_and_free_vma;
 		else
 			goto free_vma;
 	}
@@ -2682,6 +2684,8 @@ unsigned long mmap_region(struct file *file, unsigned long addr,
 		error = -ENOMEM;
 		if (file)
 			goto close_and_free_vma;
+		else if (vma->vm_file)
+			goto unmap_and_free_vma;
 		else
 			goto free_vma;
 	}
@@ -2751,7 +2755,7 @@ unsigned long mmap_region(struct file *file, unsigned long addr,
 
 	/* Undo any partial mapping done by a device driver. */
 	unmap_region(mm, mas.tree, vma, prev, next, vma->vm_start, vma->vm_end);
-	if (vm_flags & VM_SHARED)
+	if (file && (vm_flags & VM_SHARED))
 		mapping_unmap_writable(file->f_mapping);
 free_vma:
 	vm_area_free(vma);