diff --git a/mysql-test/main/trigger-trans.result b/mysql-test/main/trigger-trans.result
index 24ef9a4291a..2113377b1ab 100644
--- a/mysql-test/main/trigger-trans.result
+++ b/mysql-test/main/trigger-trans.result
@@ -234,11 +234,12 @@ DROP TABLE t3, t2, t1;
 # void MDL_context::release_lock(MDL_ticket*)
 #
 CREATE TABLE t1 (id int(11)) ENGINE=InnoDB;
-SET max_statement_time= 0.001;
 LOCK TABLES t1 WRITE;
+SET max_statement_time= 0.001;
 CREATE TRIGGER tr16 AFTER UPDATE ON t1 FOR EACH ROW INSERT INTO t1 VALUES (1);
-DROP TABLE t1;
 SET max_statement_time= default;
+DROP TRIGGER IF EXISTS trg16;
+DROP TABLE t1;
 #
 # End of 10.5 tests
 #
diff --git a/mysql-test/main/trigger-trans.test b/mysql-test/main/trigger-trans.test
index 378da045e0a..5d7d1f8afef 100644
--- a/mysql-test/main/trigger-trans.test
+++ b/mysql-test/main/trigger-trans.test
@@ -240,11 +240,17 @@ DROP TABLE t3, t2, t1;
 --echo #
 
 CREATE TABLE t1 (id int(11)) ENGINE=InnoDB;
-SET max_statement_time= 0.001;
 LOCK TABLES t1 WRITE;
+SET max_statement_time= 0.001;
+--error 0,1969,2013
+--disable_warnings
 CREATE TRIGGER tr16 AFTER UPDATE ON t1 FOR EACH ROW INSERT INTO t1 VALUES (1);
-DROP TABLE t1;
+--enable_warnings
 SET max_statement_time= default;
+--disable_warnings
+DROP TRIGGER IF EXISTS trg16;
+--enable_warnings
+DROP TABLE t1;
 
 --echo #
 --echo # End of 10.5 tests
diff --git a/sql/sql_admin.cc b/sql/sql_admin.cc
index 850e0ddb6b2..aa66291929c 100644
--- a/sql/sql_admin.cc
+++ b/sql/sql_admin.cc
@@ -605,6 +605,7 @@ static bool mysql_admin_table(THD* thd, TABLE_LIST* tables,
 
     if (thd->check_killed())
     {
+      open_error= false;
       fatal_error= true;
       result_code= HA_ADMIN_FAILED;
       goto send_result;
diff --git a/storage/innobase/buf/buf0buf.cc b/storage/innobase/buf/buf0buf.cc
index 1c506968696..1e19ca713be 100644
--- a/storage/innobase/buf/buf0buf.cc
+++ b/storage/innobase/buf/buf0buf.cc
@@ -824,7 +824,7 @@ buf_madvise_do_dump()
 		ret+= madvise(chunk->mem, chunk->mem_size(), MADV_DODUMP);
 	}
 
-	mysql_mutex_lock(&buf_pool.mutex);
+	mysql_mutex_unlock(&buf_pool.mutex);
 	return ret;
 }
 #endif