diff --git a/mm/filemap.c b/mm/filemap.c
index 4f3753f0a158..88de8029133c 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -2360,6 +2360,8 @@ static int filemap_read_folio(struct file *file, filler_t filler,
 	/* Start the actual read. The read will unlock the page. */
 	if (unlikely(workingset))
 		psi_memstall_enter(&pflags);
+	if (!filler)
+		return -EIO;
 	error = filler(file, folio);
 	if (unlikely(workingset))
 		psi_memstall_leave(&pflags);