Index: handler/ha_innodb.cc
===================================================================
--- handler/ha_innodb.cc	(revision 2009)
+++ handler/ha_innodb.cc	(working copy)
@@ -351,6 +351,12 @@
 /*========================*/
 	trx_t*	trx)	/* in: transaction handle */
 {
+	THD* thd;
+	thd = current_thd;  // avoid calling current_thd twice, it may be slow
+	if (thd != NULL && thd->status_var.created_tmp_disk_tables) {
+		innobase_release_temporary_latches(thd);
+	}
+
 	if (UNIV_LIKELY(!srv_thread_concurrency)) {
 
 		return;