MDEV-9853: WSREP says it cannot get fake InnoDB transaction ID followed by segmentation fault

Ha_trx_info should not be reset in ha_fake_trx_id() as it is
later used during commit.

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

@@ -58,4 +58,14 @@ t2	CREATE TABLE `t2` (
   KEY `idx` (`i`)
 ) ENGINE=InnoDB DEFAULT CHARSET=latin1
 DROP TABLE t1, t2;
+#
+# MDEV-9853: WSREP says it cannot get fake InnoDB transaction ID
+# followed by segmentation fault
+#
+CREATE TABLE `t1`(`c1` INT) ENGINE=INNODB;
+SET autocommit=0;
+CREATE TABLE `t2` (`c1` INT) ENGINE=INNODB SELECT * FROM t1;
+COMMIT;
+SET autocommit=1;
+DROP TABLE t1, t2;
 # End of tests

mysql-test/suite/galera/suite.pm

@@ -67,6 +67,7 @@ push @::global_suppressions,
      qr|WSREP: gcs_caused\(\) returned .*|,
      qr|WSREP: Protocol violation. JOIN message sender .* is not in state transfer \(SYNCED\). Message ignored.|,
      qr(WSREP: Action message in non-primary configuration from member [0-9]*),
+     qr(WSREP: cannot get fake InnoDB transaction ID),
    );
 
 

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

@@ -54,5 +54,20 @@ SHOW CREATE TABLE t2;
 # Cleanup
 DROP TABLE t1, t2;
 
+--echo #
+--echo # MDEV-9853: WSREP says it cannot get fake InnoDB transaction ID
+--echo # followed by segmentation fault
+--echo #
+CREATE TABLE `t1`(`c1` INT) ENGINE=INNODB;
+
+SET autocommit=0;
+CREATE TABLE `t2` (`c1` INT) ENGINE=INNODB SELECT * FROM t1;
+COMMIT;
+SET autocommit=1;
+
+# Cleanup
+DROP TABLE t1, t2;
+
+--source include/galera_end.inc
 --echo # End of tests
 

sql/handler.cc

@@ -6122,7 +6122,6 @@ void ha_fake_trx_id(THD *thd)
     else
       hton->fake_trx_id(hton, thd);
     ha_info_next= ha_info->next();
-    ha_info->reset(); /* keep it conveniently zero-filled */
   }
   DBUG_VOID_RETURN;
 }