diff --git a/mm/memory.c b/mm/memory.c
index 30feedabc932..3ccee51adfbb 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -6350,7 +6350,8 @@ static inline void pfnmap_args_setup(struct follow_pfnmap_args *args,
 static inline void pfnmap_lockdep_assert(struct vm_area_struct *vma)
 {
 #ifdef CONFIG_LOCKDEP
-	struct address_space *mapping = vma->vm_file->f_mapping;
+	struct file *file = vma->vm_file;
+	struct address_space *mapping = file ? file->f_mapping : NULL;
 
 	if (mapping)
 		lockdep_assert(lockdep_is_held(&vma->vm_file->f_mapping->i_mmap_rwsem) ||