MDEV-22494 : Galera assertion lock_sys.mutex.is_owned() at lock_trx_handle_wait_low

Problem was that trx->lock.was_chosen_as_wsrep_victim variable was
not set back to false after it was set true.

wsrep_thd_bf_abort
	Add assertions for correct mutex status and take necessary
	mutexes before calling thd->awake_no_mutex().

innobase_rollback_trx()
	Reset trx->lock.was_chosen_as_wsrep_victim

wsrep_abort_slave_trx()
	Removed unused function.

wsrep_innobase_kill_one_trx()
	Added function comment, removed unnecessary parameters
	and added debug assertions to enforce correct usage. Added
	more debug output to help out on error analysis.

wsrep_abort_transaction()
	Added debug assertions and removed unused variables.

trx0trx.h
	Removed assert_trx_is_free macro and replaced it with
	assert_freed() member function.

trx_create()
	Use above assert_free() and initialize wsrep variables.

trx_free()
	Use assert_free()

trx_t::commit_in_memory()
	Reset lock.was_chosen_as_wsrep_victim

trx_rollback_for_mysql()
	Reset trx->lock.was_chosen_as_wsrep_victim

Add test case galera_bf_kill

mysql-test/suite/galera/r/galera_bf_kill.result

@@ -0,0 +1,72 @@
+connection node_2;
+connection node_1;
+connection node_2;
+CREATE TABLE t1(a int not null primary key auto_increment,b int) engine=InnoDB;
+insert into t1 values (NULL,1);
+connect node_2a, 127.0.0.1, root, , test, $NODE_MYPORT_2;
+connection node_2a;
+begin;
+update t1 set a = 5;
+connection node_2;
+select * from t1;
+a	b
+2	1
+disconnect node_2a;
+connect node_2a, 127.0.0.1, root, , test, $NODE_MYPORT_2;
+connection node_2a;
+begin;
+update t1 set a =5;
+connection node_2;
+select * from t1;
+a	b
+2	1
+disconnect node_2a;
+connect node_2a, 127.0.0.1, root, , test, $NODE_MYPORT_2;
+connection node_2a;
+begin;
+update t1 set a =5, b=2;
+connection node_2;
+ALTER TABLE t1 ADD UNIQUE KEY b1(b);
+ALTER TABLE t1 DROP KEY b1;
+select * from t1;
+a	b
+2	1
+disconnect node_2a;
+connect node_2a, 127.0.0.1, root, , test, $NODE_MYPORT_2;
+connection node_2a;
+begin;
+update t1 set a =5, b=2;
+connect node_2b, 127.0.0.1, root, , test, $NODE_MYPORT_2;
+connection node_2b;
+begin;
+update t1 set a =6, b=7;
+connection node_2;
+ALTER TABLE t1 ADD UNIQUE KEY b2(b);
+ALTER TABLE t1 DROP KEY b2;
+select * from t1;
+a	b
+2	1
+disconnect node_2a;
+disconnect node_2b;
+connect node_2a, 127.0.0.1, root, , test, $NODE_MYPORT_2;
+connection node_2a;
+SET SESSION wsrep_on=OFF;
+begin;
+update t1 set a =5, b=2;
+connection node_2;
+ALTER TABLE t1 ADD UNIQUE KEY b3(b);
+select * from t1;
+a	b
+2	1
+disconnect node_2a;
+connect node_2a, 127.0.0.1, root, , test, $NODE_MYPORT_2;
+connection node_2a;
+SET SESSION wsrep_on=OFF;
+begin;
+update t1 set a =5, b=2;
+connection node_2;
+select * from t1;
+a	b
+2	1
+disconnect node_2a;
+drop table t1;

mysql-test/suite/galera/r/galera_bf_lock_wait.result

@@ -1,5 +1,7 @@
 connection node_2;
 connection node_1;
+connection node_1;
+call mtr.add_suppression("WSREP: Trying to continue unpaused monitor");
 CREATE TABLE t1 ENGINE=InnoDB select 1 as a, 1 as b union select 2, 2;
 ALTER TABLE t1 add primary key(a);
 CREATE PROCEDURE p1()
@@ -19,7 +21,7 @@ connect node_2_p1, 127.0.0.1, root, , test, $NODE_MYPORT_2;
 call p1;
 connect node_2_p2, 127.0.0.1, root, , test, $NODE_MYPORT_2;
 call p1;
-connection default;
+connection node_1;
 checking error log for 'BF lock wait long' message for 10 times every 10 seconds ...
 drop table t1;
 drop procedure p1;

mysql-test/suite/galera/t/galera_bf_kill.cnf

@@ -0,0 +1,7 @@
+!include ../galera_2nodes.cnf
+
+[mysqld.1]
+wsrep-debug=SERVER
+
+[mysqld.2]
+wsrep-debug=SERVER

mysql-test/suite/galera/t/galera_bf_kill.test

@@ -0,0 +1,143 @@
+--source include/galera_cluster.inc
+
+#
+# Test case 1: Start a transaction on node_2a and kill it
+# from other connection on same node
+#
+
+--connection node_2
+CREATE TABLE t1(a int not null primary key auto_increment,b int) engine=InnoDB;
+insert into t1 values (NULL,1);
+
+--connect node_2a, 127.0.0.1, root, , test, $NODE_MYPORT_2
+--connection node_2a
+begin;
+update t1 set a = 5;
+
+--connection node_2
+
+--let $wait_condition = SELECT COUNT(*) = 1 FROM INFORMATION_SCHEMA.PROCESSLIST WHERE USER = 'root' AND COMMAND = 'Sleep' LIMIT 1
+--source include/wait_condition.inc
+
+--let $k_thread = `SELECT ID FROM INFORMATION_SCHEMA.PROCESSLIST WHERE USER = 'root' AND COMMAND = 'Sleep' LIMIT 1`
+
+--disable_query_log
+--eval KILL $k_thread
+--enable_query_log
+
+select * from t1;
+--disconnect node_2a
+
+#
+# Test case 2: Start a transaction on node_2a and use
+# kill query from other connection on same node
+#
+
+--connect node_2a, 127.0.0.1, root, , test, $NODE_MYPORT_2
+--connection node_2a
+begin;
+update t1 set a =5;
+
+--connection node_2
+--let $wait_condition = SELECT COUNT(*) = 1 FROM INFORMATION_SCHEMA.PROCESSLIST WHERE USER = 'root' AND COMMAND = 'Sleep' LIMIT 1
+--source include/wait_condition.inc
+
+--let $k_thread = `SELECT ID FROM INFORMATION_SCHEMA.PROCESSLIST WHERE USER = 'root' AND COMMAND = 'Sleep' LIMIT 1`
+
+--disable_query_log
+--eval KILL QUERY $k_thread
+--enable_query_log
+
+select * from t1;
+--disconnect node_2a
+#
+# Test case 3: Start a transaction on node_2a and start a DDL on other transaction
+# that will then abort node_2a transaction
+#
+--connect node_2a, 127.0.0.1, root, , test, $NODE_MYPORT_2
+--connection node_2a
+begin;
+update t1 set a =5, b=2;
+
+--connection node_2
+ALTER TABLE t1 ADD UNIQUE KEY b1(b);
+ALTER TABLE t1 DROP KEY b1;
+
+select * from t1;
+
+--disconnect node_2a
+
+#
+# Test case 4: Start a transaction on node_2a and conflicting transaction on node_2b
+# and start a DDL on other transaction that will then abort node_2a and node_2b
+# transactions
+#
+
+--connect node_2a, 127.0.0.1, root, , test, $NODE_MYPORT_2
+--connection node_2a
+begin;
+update t1 set a =5, b=2;
+
+--connect node_2b, 127.0.0.1, root, , test, $NODE_MYPORT_2
+--connection node_2b
+begin;
+send update t1 set a =6, b=7;
+
+--connection node_2
+ALTER TABLE t1 ADD UNIQUE KEY b2(b);
+ALTER TABLE t1 DROP KEY b2;
+
+select * from t1;
+
+--disconnect node_2a
+--disconnect node_2b
+
+#
+# Test case 5: Start a transaction on node_2a with wsrep disabled 
+# and start a DDL on other transaction that will then abort node_2a
+# transactions
+#
+
+--connect node_2a, 127.0.0.1, root, , test, $NODE_MYPORT_2
+--connection node_2a
+SET SESSION wsrep_on=OFF;
+begin;
+update t1 set a =5, b=2;
+
+--connection node_2
+ALTER TABLE t1 ADD UNIQUE KEY b3(b);
+
+select * from t1;
+
+--disconnect node_2a
+
+#
+# Test case 6: Start a transaction on node_2a with wsrep disabled 
+# and kill it from other connection on same node
+#
+
+--connect node_2a, 127.0.0.1, root, , test, $NODE_MYPORT_2
+--connection node_2a
+SET SESSION wsrep_on=OFF;
+begin;
+update t1 set a =5, b=2;
+
+--connection node_2
+--let $wait_condition = SELECT COUNT(*) = 1 FROM INFORMATION_SCHEMA.PROCESSLIST WHERE USER = 'root' AND COMMAND = 'Sleep' LIMIT 1
+--source include/wait_condition.inc
+
+--let $k_thread = `SELECT ID FROM INFORMATION_SCHEMA.PROCESSLIST WHERE USER = 'root' AND COMMAND = 'Sleep' LIMIT 1`
+
+--disable_query_log
+--eval KILL $k_thread
+--enable_query_log
+
+
+select * from t1;
+
+--disconnect node_2a
+
+drop table t1;
+
+
+

mysql-test/suite/galera/t/galera_bf_lock_wait.cnf

@@ -0,0 +1,7 @@
+!include ../galera_2nodes.cnf
+
+[mysqld.1]
+wsrep-debug=SERVER
+
+[mysqld.2]
+wsrep-debug=SERVER

mysql-test/suite/galera/t/galera_bf_lock_wait.test

@@ -1,6 +1,10 @@
 --source include/galera_cluster.inc
 --source include/big_test.inc
- 
+
+--connection node_1
+
+call mtr.add_suppression("WSREP: Trying to continue unpaused monitor");
+
 CREATE TABLE t1 ENGINE=InnoDB select 1 as a, 1 as b union select 2, 2;
 ALTER TABLE t1 add primary key(a);
  
@@ -28,7 +32,7 @@ send call p1;
 --connect node_2_p2, 127.0.0.1, root, , test, $NODE_MYPORT_2
 send call p1;
  
-connection default;
+connection node_1;
 let $counter=10;
 let $sleep_period=10;
  

sql/service_wsrep.cc

@@ -207,7 +207,15 @@ extern "C" my_bool wsrep_thd_bf_abort(THD *bf_thd, THD *victim_thd,
     as RSU has paused the provider.
    */
   if ((ret || !wsrep_on(victim_thd)) && signal)
-    victim_thd->awake(KILL_QUERY);
+  {
+    mysql_mutex_assert_not_owner(&victim_thd->LOCK_thd_data);
+    mysql_mutex_assert_not_owner(&victim_thd->LOCK_thd_kill);
+    mysql_mutex_lock(&victim_thd->LOCK_thd_data);
+    mysql_mutex_lock(&victim_thd->LOCK_thd_kill);
+    victim_thd->awake_no_mutex(KILL_QUERY);
+    mysql_mutex_unlock(&victim_thd->LOCK_thd_kill);
+    mysql_mutex_unlock(&victim_thd->LOCK_thd_data);
+  }
   return ret;
 }
 

storage/innobase/handler/ha_innodb.cc

@@ -4720,7 +4720,8 @@ innobase_rollback_trx(
 	if (!trx->has_logged()) {
 		trx->will_lock = 0;
 #ifdef WITH_WSREP
-		trx->wsrep = false;
+		trx->wsrep= false;
+		trx->lock.was_chosen_as_wsrep_victim= false;
 #endif
 		DBUG_RETURN(0);
 	}
@@ -18635,106 +18636,128 @@ static struct st_mysql_storage_engine innobase_storage_engine=
 { MYSQL_HANDLERTON_INTERFACE_VERSION };
 
 #ifdef WITH_WSREP
-void
+
-wsrep_abort_slave_trx(
+/** This function is used to kill one transaction.
-/*==================*/
+
-	wsrep_seqno_t bf_seqno,
+This transaction was open on this node (not-yet-committed), and a
-	wsrep_seqno_t victim_seqno)
+conflicting writeset from some other node that was being applied
-{
+caused a locking conflict.  First committed (from other node)
-	WSREP_ERROR("Trx %lld tries to abort slave trx %lld. This could be "
+wins, thus open transaction is rolled back.  BF stands for
-		"caused by:\n\t"
+brute-force: any transaction can get aborted by galera any time
-		"1) unsupported configuration options combination, please check documentation.\n\t"
+it is necessary.
-		"2) a bug in the code.\n\t"
+
-		"3) a database corruption.\n Node consistency compromized, "
+This conflict can happen only when the replicated writeset (from
-		"need to abort. Restart the node to resync with cluster.",
+other node) is being applied, not when it’s waiting in the queue.
-		(long long)bf_seqno, (long long)victim_seqno);
+If our local transaction reached its COMMIT and this conflicting
-	abort();
+writeset was in the queue, then it should fail the local
-}
+certification test instead.
-/*******************************************************************//**
+
-This function is used to kill one transaction in BF. */
+A brute force abort is only triggered by a locking conflict
+between a writeset being applied by an applier thread (slave thread)
+and an open transaction on the node, not by a Galera writeset
+comparison as in the local certification failure.
+
+@param[in]	bf_thd		Brute force (BF) thread
+@param[in,out]	victim_trx	Vimtim trx to be killed
+@param[in]	signal		Should victim be signaled */
 UNIV_INTERN
 int
 wsrep_innobase_kill_one_trx(
-/*========================*/
+	THD* bf_thd,
-	void * const bf_thd_ptr,
-	const trx_t * const bf_trx,
 	trx_t *victim_trx,
-	ibool signal)
+	bool signal)
 {
-        ut_ad(lock_mutex_own());
+	ut_ad(bf_thd);
-        ut_ad(trx_mutex_own(victim_trx));
+	ut_ad(victim_trx);
-        ut_ad(bf_thd_ptr);
+	ut_ad(lock_mutex_own());
-        ut_ad(victim_trx);
+	ut_ad(trx_mutex_own(victim_trx));
 
 	DBUG_ENTER("wsrep_innobase_kill_one_trx");
-	THD *bf_thd       = bf_thd_ptr ? (THD*) bf_thd_ptr : NULL;
-	THD *thd          = (THD *) victim_trx->mysql_thd;
-	int64_t bf_seqno  = (bf_thd) ? wsrep_thd_trx_seqno(bf_thd) : 0;
 
-	if (!thd) {
+	THD *thd= (THD *) victim_trx->mysql_thd;
-		DBUG_PRINT("wsrep", ("no thd for conflicting lock"));
+	ut_ad(thd);
-		WSREP_WARN("no THD for trx: " TRX_ID_FMT, victim_trx->id);
+	/* Note that bf_trx might not exist here e.g. on MDL conflict
-		DBUG_RETURN(1);
+	case (test: galera_concurrent_ctas). Similarly, BF thread
-	}
+	could be also acquiring MDL-lock causing victim to be
+	aborted. However, we have not yet called innobase_trx_init()
+	for BF transaction (test: galera_many_columns)*/
+	trx_t* bf_trx= thd_to_trx(bf_thd);
+	DBUG_ASSERT(wsrep_on(bf_thd));
 
-	if (!bf_thd) {
-		DBUG_PRINT("wsrep", ("no BF thd for conflicting lock"));
-		WSREP_WARN("no BF THD for trx: " TRX_ID_FMT,
-			   bf_trx ? bf_trx->id : 0);
-		DBUG_RETURN(1);
-	}
-	WSREP_LOG_CONFLICT(bf_thd, thd, TRUE);
 	wsrep_thd_LOCK(thd);
-	WSREP_DEBUG("BF kill (" ULINTPF ", seqno: " INT64PF
-		    "), victim: (%lu) trx: " TRX_ID_FMT,
-		    signal, bf_seqno,
-		    thd_get_thread_id(thd),
-		    victim_trx->id);
 
-	WSREP_DEBUG("Aborting query: %s conf %s trx: %lld",
+	WSREP_LOG_CONFLICT(bf_thd, thd, TRUE);
-		    (thd && wsrep_thd_query(thd)) ? wsrep_thd_query(thd) : "void",
-		    wsrep_thd_transaction_state_str(thd),
-		    wsrep_thd_transaction_id(thd));
 
-	/*
+	WSREP_DEBUG("Aborter %s trx_id: " TRX_ID_FMT " thread: %ld "
-	 * we mark with was_chosen_as_deadlock_victim transaction,
+		"seqno: %lld client_state: %s client_mode: %s transaction_mode: %s "
-	 * which is already marked as BF victim
+		"query: %s",
-	 * lock_sys is held until this vicitm has aborted
+		wsrep_thd_is_BF(bf_thd, false) ? "BF" : "normal",
-	 */
+		bf_trx ? bf_trx->id : TRX_ID_MAX,
-	victim_trx->lock.was_chosen_as_wsrep_victim = TRUE;
+		thd_get_thread_id(bf_thd),
+		wsrep_thd_trx_seqno(bf_thd),
+		wsrep_thd_client_state_str(bf_thd),
+		wsrep_thd_client_mode_str(bf_thd),
+		wsrep_thd_transaction_state_str(bf_thd),
+		wsrep_thd_query(bf_thd));
 
+	WSREP_DEBUG("Victim %s trx_id: " TRX_ID_FMT " thread: %ld "
+		"seqno: %lld client_state: %s  client_mode: %s transaction_mode: %s "
+		"query: %s",
+		wsrep_thd_is_BF(thd, false) ? "BF" : "normal",
+		victim_trx->id,
+		thd_get_thread_id(thd),
+		wsrep_thd_trx_seqno(thd),
+		wsrep_thd_client_state_str(thd),
+		wsrep_thd_client_mode_str(thd),
+		wsrep_thd_transaction_state_str(thd),
+		wsrep_thd_query(thd));
+
+	/* Mark transaction as a victim for Galera abort */
+	victim_trx->lock.was_chosen_as_wsrep_victim= true;
+
+	/* Note that we need to release this as it will be acquired
+	below in wsrep-lib */
 	wsrep_thd_UNLOCK(thd);
+
 	if (wsrep_thd_bf_abort(bf_thd, thd, signal))
 	{
-		if (victim_trx->lock.wait_lock) {
+		lock_t*  wait_lock = victim_trx->lock.wait_lock;
+		if (wait_lock) {
+			DBUG_ASSERT(victim_trx->is_wsrep());
 			WSREP_DEBUG("victim has wait flag: %lu",
 				    thd_get_thread_id(thd));
-			lock_t*  wait_lock = victim_trx->lock.wait_lock;
 
-			if (wait_lock) {
+			WSREP_DEBUG("canceling wait lock");
-				WSREP_DEBUG("canceling wait lock");
+			victim_trx->lock.was_chosen_as_deadlock_victim= TRUE;
-				victim_trx->lock.was_chosen_as_deadlock_victim= TRUE;
+			lock_cancel_waiting_and_release(wait_lock);
-				lock_cancel_waiting_and_release(wait_lock);
-			}
 		}
 	}
 
 	DBUG_RETURN(0);
 }
 
+/** This function forces the victim transaction to abort. Aborting the
+  transaction does NOT end it, it still has to be rolled back.
+
+  @param bf_thd       brute force THD asking for the abort
+  @param victim_thd   victim THD to be aborted
+
+  @return 0 victim was aborted
+  @return -1 victim thread was aborted (no transaction)
+*/
 static
 int
 wsrep_abort_transaction(
-/*====================*/
 	handlerton*,
 	THD *bf_thd,
 	THD *victim_thd,
 	my_bool signal)
 {
 	DBUG_ENTER("wsrep_innobase_abort_thd");
+	ut_ad(bf_thd);
+	ut_ad(victim_thd);
 
 	trx_t* victim_trx	= thd_to_trx(victim_thd);
-	trx_t* bf_trx		= (bf_thd) ? thd_to_trx(bf_thd) : NULL;
 
 	WSREP_DEBUG("abort transaction: BF: %s victim: %s victim conf: %s",
 			wsrep_thd_query(bf_thd),
@@ -18744,7 +18767,7 @@ wsrep_abort_transaction(
 	if (victim_trx) {
 		lock_mutex_enter();
 		trx_mutex_enter(victim_trx);
-		int rcode= wsrep_innobase_kill_one_trx(bf_thd, bf_trx,
+		int rcode= wsrep_innobase_kill_one_trx(bf_thd,
 						       victim_trx, signal);
 		trx_mutex_exit(victim_trx);
 		lock_mutex_exit();

storage/innobase/include/ha_prototypes.h

@@ -232,10 +232,11 @@ innobase_casedn_str(
 #ifdef WITH_WSREP
 UNIV_INTERN
 int
-wsrep_innobase_kill_one_trx(void * const thd_ptr,
+wsrep_innobase_kill_one_trx(
-                            const trx_t * const bf_trx,
+	THD* bf_thd,
-                            trx_t *victim_trx,
+	trx_t *victim_trx,
-                            ibool signal);
+	bool signal);
+
 ulint wsrep_innobase_mysql_sort(int mysql_type, uint charset_number,
                              unsigned char* str, unsigned int str_length,
                              unsigned int buf_length);

storage/innobase/include/trx0trx.h

@@ -436,32 +436,6 @@ Check transaction state */
 	ut_error;							\
 } while (0)
 
-/** Check if transaction is free so that it can be re-initialized.
-@param t transaction handle */
-#define	assert_trx_is_free(t)	do {					\
-	ut_ad(trx_state_eq((t), TRX_STATE_NOT_STARTED));		\
-	ut_ad(!(t)->id);						\
-	ut_ad(!(t)->has_logged());					\
-	ut_ad(!(t)->is_referenced());					\
-	ut_ad(!(t)->is_wsrep());					\
-	ut_ad(!(t)->read_view.is_open());				\
-	ut_ad((t)->lock.wait_thr == NULL);				\
-	ut_ad(UT_LIST_GET_LEN((t)->lock.trx_locks) == 0);		\
-	ut_ad((t)->lock.table_locks.empty());				\
-	ut_ad(!(t)->autoinc_locks					\
-	      || ib_vector_is_empty((t)->autoinc_locks));		\
-	ut_ad(UT_LIST_GET_LEN((t)->lock.evicted_tables) == 0);		\
-	ut_ad((t)->dict_operation == TRX_DICT_OP_NONE);			\
-} while(0)
-
-/** Check if transaction is in-active so that it can be freed and put back to
-transaction pool.
-@param t transaction handle */
-#define assert_trx_is_inactive(t) do {					\
-	assert_trx_is_free((t));					\
-	ut_ad((t)->dict_operation_lock_mode == 0);			\
-} while(0)
-
 #ifdef UNIV_DEBUG
 /*******************************************************************//**
 Assert that an autocommit non-locking select cannot be in the
@@ -1158,6 +1132,26 @@ public:
   }
 
 
+  void assert_freed() const
+  {
+    ut_ad(state == TRX_STATE_NOT_STARTED);
+    ut_ad(!id);
+    ut_ad(!has_logged());
+    ut_ad(!is_referenced());
+    ut_ad(!is_wsrep());
+#ifdef WITH_WSREP
+    ut_ad(!lock.was_chosen_as_wsrep_victim);
+#endif
+    ut_ad(!read_view.is_open());
+    ut_ad(!lock.wait_thr);
+    ut_ad(UT_LIST_GET_LEN(lock.trx_locks) == 0);
+    ut_ad(lock.table_locks.empty());
+    ut_ad(!autoinc_locks || ib_vector_is_empty(autoinc_locks));
+    ut_ad(UT_LIST_GET_LEN(lock.evicted_tables) == 0);
+    ut_ad(dict_operation == TRX_DICT_OP_NONE);
+  }
+
+
 private:
 	/** Assign a rollback segment for modifying temporary tables.
 	@return the assigned rollback segment */

storage/innobase/lock/lock0lock.cc

@@ -1134,7 +1134,7 @@ wsrep_kill_victim(
 			}
 
 			wsrep_innobase_kill_one_trx(trx->mysql_thd,
-						    trx, lock->trx, TRUE);
+						    lock->trx, true);
 		}
 	}
 }

storage/innobase/trx/trx0roll.cc

@@ -229,7 +229,8 @@ dberr_t trx_rollback_for_mysql(trx_t* trx)
 		trx->will_lock = 0;
 		ut_ad(trx->mysql_thd);
 #ifdef WITH_WSREP
-		trx->wsrep = false;
+		trx->wsrep= false;
+		trx->lock.was_chosen_as_wsrep_victim= false;
 #endif
 		return(DB_SUCCESS);
 

storage/innobase/trx/trx0trx.cc

@@ -353,14 +353,13 @@ trx_t *trx_create()
 {
 	trx_t*	trx = trx_pools->get();
 
-	assert_trx_is_free(trx);
+	trx->assert_freed();
 
 	mem_heap_t*	heap;
 	ib_alloc_t*	alloc;
 
 	/* We just got trx from pool, it should be non locking */
 	ut_ad(trx->will_lock == 0);
-	ut_ad(trx->state == TRX_STATE_NOT_STARTED);
 	ut_ad(!trx->rw_trx_hash_pins);
 
 	DBUG_LOG("trx", "Create: " << trx);
@@ -383,7 +382,7 @@ trx_t *trx_create()
 	ut_ad(UT_LIST_GET_LEN(trx->lock.evicted_tables) == 0);
 
 #ifdef WITH_WSREP
-	trx->wsrep_event = NULL;
+	trx->wsrep_event= NULL;
 #endif /* WITH_WSREP */
 
 	trx_sys.register_trx(trx);
@@ -431,11 +430,11 @@ void trx_free(trx_t*& trx)
 	}
 
 	trx->dict_operation = TRX_DICT_OP_NONE;
-	assert_trx_is_inactive(trx);
+	ut_ad(!trx->dict_operation_lock_mode);
 
 	trx_sys.deregister_trx(trx);
 
-	assert_trx_is_free(trx);
+	trx->assert_freed();
 
 	trx_sys.rw_trx_hash.put_pins(trx);
 	trx->mysql_thd = 0;
@@ -1496,7 +1495,6 @@ inline void trx_t::commit_in_memory(const mtr_t *mtr)
 
   trx_mutex_enter(this);
   dict_operation= TRX_DICT_OP_NONE;
-  lock.was_chosen_as_deadlock_victim= false;
 
   DBUG_LOG("trx", "Commit in memory: " << this);
   state= TRX_STATE_NOT_STARTED;
@@ -1510,9 +1508,10 @@ inline void trx_t::commit_in_memory(const mtr_t *mtr)
     wsrep= false;
     wsrep_commit_ordered(mysql_thd);
   }
+  lock.was_chosen_as_wsrep_victim= false;
 #endif /* WITH_WSREP */
 
-  assert_trx_is_free(this);
+  assert_freed();
   trx_init(this);
   trx_mutex_exit(this);