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################################################################################
# Bug#26952994 A DOUBLE-FREE ISSUE
#
# Problem: Slave crashes due to double free when there is an error in
# allocating memory in Hash_slave_rows::make_entry() function.
#
# Steps to reproduce:
#
# 1) Create a master-slave topology with master's binlog_format=row.
# 2) On slave, set slave_rows_search_algorithms= 'HASH_SCAN' and set a
# simulation point to fake a my_alloc_failure i.e, 'fake_myalloc_failure'.
# 3) On master, create a table, insert a row and do an update.
# 4) The update on master causes the slave sql thread to stop with Error 1030.
# 5) Cleanup.
#
################################################################################
--echo #1) Create a master-slave topology with master's binlog_format=row.
--source include/have_debug.inc
--source include/have_binlog_format_row.inc
--source include/master-slave.inc
--echo #2) On slave, set slave_rows_search_algorithms= 'HASH_SCAN' and set a
--echo # simulation point to fake a my_alloc_failure i.e, 'fake_malloc_failure'.
--source include/rpl_connection_slave.inc
call mtr.add_suppression("Slave SQL.*Could not execute Update_rows event on table test.t1");
call mtr.add_suppression("Slave: Got error 1*");
call mtr.add_suppression("The slave coordinator and worker threads are stopped, possibly leaving data in inconsistent state");
SET @saved_slave_rows_search_algorithms= @@global.slave_rows_search_algorithms;
SET GLOBAL slave_rows_search_algorithms= 'HASH_SCAN';
SET @old_debug= @@global.debug;
SET GLOBAL debug= '+d,fake_myalloc_failure';
--echo #3) On master, create a table, insert a row and do an update.
--source include/rpl_connection_master.inc
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1);
UPDATE t1 SET a=2 WHERE a=1;
--echo #4) The update on master causes the slave sql thread to stop with Error 1030.
--source include/rpl_connection_slave.inc
--let $slave_sql_errno= convert_error(ER_GET_ERRNO)
--source include/wait_for_slave_sql_error.inc
--echo #5) Cleanup
SET GLOBAL debug= @old_debug;
SET GLOBAL slave_rows_search_algorithms= @saved_slave_rows_search_algorithms;
DROP TABLE t1;
--source include/rpl_connection_master.inc
DROP TABLE t1;
# Slave SQL thread has already stopped, stopping the IO trhead.
--source include/rpl_connection_slave.inc
--source include/wait_for_slave_sql_error.inc
--source include/stop_slave_io.inc
RESET SLAVE;
--let $rpl_only_running_threads= 1
--source include/rpl_end.inc