diff --git a/fs/dax.c b/fs/dax.c
index b0cd1364c68fa60d8bcee3e6ad9ae1bdb0a884de..3a2682a6c8324c915257767f438346159173871d 100644
--- a/fs/dax.c
+++ b/fs/dax.c
@@ -423,7 +423,7 @@ bool dax_lock_mapping_entry(struct page *page)
 	for (;;) {
 		mapping = READ_ONCE(page->mapping);
 
-		if (!dax_mapping(mapping))
+		if (!mapping || !dax_mapping(mapping))
 			break;
 
 		/*