SEGV hit during RQG testing
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Workflow of RQG test
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1. Start the server + generate some data
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2. Several connections run a DDL/DML mix on the same tables
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3. At some point of time during 2. the server process gets killed
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4. Restart of the server
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5. Try to check the integrity of InnoDB tables
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Within 5. some
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SHOW KEYS FROM `test`.`t3` harvested
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2013: Lost connection to MySQL server
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and the server error log shows
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SUMMARY: AddressSanitizer: SEGV /storage/innobase/include/dict0mem.h:1178 in dict_index_t::is_spatial() const
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Thread T33 created by T0 here:
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#0 0x131f70338d2f in __interceptor_pthread_create (/usr/lib/x86_64-linux-gnu/libasan.so.4+0x37d2f)
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#1 0x560720863ff6 in my_thread_create /storage/perfschema/my_thread.h:34
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#2 0x560720869693 in pfs_spawn_thread_v1 /storage/perfschema/pfs.cc:2252
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#3 0x56071f48814c in inline_mysql_thread_create /include/mysql/psi/mysql_thread.h:1321
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#4 0x56071f49d5e9 in create_thread_to_handle_connection(CONNECT*) /sql/mysqld.cc:5951
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#5 0x56071f49dc4a in create_new_thread(CONNECT*) /sql/mysqld.cc:6010
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#6 0x56071f49df70 in handle_accepted_socket(st_mysql_socket, st_mysql_socket) /sql/mysqld.cc:6075
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#7 0x56071f49ea8d in handle_connections_sockets() /sql/mysqld.cc:6202
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#8 0x56071f49ce47 in mysqld_main(int, char**) /sql/mysqld.cc:5620
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#9 0x56071f486879 in main /sql/main.cc:25
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#10 0x7f3a327f6b96 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
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==8558==ABORTING
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origin/HEAD, origin/10.5, 10.5 bd62a636a42f1486437cbed21198315f44d9e7b6 2020-06-14T18:40:07+09:00
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Per Thiru all MariaDB versions >= 10.2 are affected.
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RQG
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git clone https://github.com/mleich1/rqg --branch experimental RQG
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origin/experimental 611a31e38a3bc157392c0748c95991b6a248bb3b 2020-06-09T15:31:46+02:00
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perl rqg.pl \
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--grammar=conf/mariadb/table_stress_innodb_nocopy.yy \
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--gendata=conf/mariadb/table_stress.zz \
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--gendata_sql=conf/mariadb/table_stress.sql \
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--reporters=CrashRecovery1 \
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--mysqld=--innodb_use_native_aio=1 \
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--mysqld=--innodb_stats_persistent=off \
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--mysqld=--innodb_lock_schedule_algorithm=fcfs \
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--mysqld=--loose-idle_write_transaction_timeout=0 \
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--mysqld=--loose-idle_transaction_timeout=0 \
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--mysqld=--loose-idle_readonly_transaction_timeout=0 \
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--mysqld=--connect_timeout=60 \
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--mysqld=--interactive_timeout=28800 \
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--mysqld=--slave_net_timeout=60 \
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--mysqld=--net_read_timeout=30 \
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--mysqld=--net_write_timeout=60 \
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--mysqld=--loose-table_lock_wait_timeout=50 \
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--mysqld=--wait_timeout=28800 \
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--mysqld=--lock-wait-timeout=86400 \
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--mysqld=--innodb-lock-wait-timeout=50 \
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--no-mask \
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--queries=10000000 \
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--duration=300 \
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--seed=random \
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--reporters=Backtrace \
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--reporters=ErrorLog \
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--reporters=Deadlock1 \
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--validators=None \
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--mysqld=--log_output=none \
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--mysqld=--log-bin \
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--mysqld=--log_bin_trust_function_creators=1 \
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--mysqld=--loose-max-statement-time=30 \
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--mysqld=--loose-debug_assert_on_not_freed_memory=0 \
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--engine=InnoDB \
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--restart_timeout=60 \
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--threads=9 \
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--redefine=conf/mariadb/redefine_ment-601.yy \
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... certain local settings
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mleich, sorry, the rr replay trace is not available any more. Can you please generate a new one?
001032.log
contains the following stack trace for the crash, which occurs because a member function is being invoked on a this=nullptr:
10.5 bd62a636a42f1486437cbed21198315f44d9e7b6
dict_index_t::is_spatial() const /home/mleich/10.5_A/storage/innobase/include/dict0mem.h:1178
ha_innobase::index_type(unsigned int) /home/mleich/10.5_A/storage/innobase/handler/ha_innodb.cc:4931
get_schema_stat_record /home/mleich/10.5_A/sql/sql_show.cc:6664
fill_schema_table_by_open /home/mleich/10.5_A/sql/sql_show.cc:4635
get_all_tables(THD*, TABLE_LIST*, Item*) /home/mleich/10.5_A/sql/sql_show.cc:5125
get_schema_tables_result(JOIN*, enum_schema_table_state) /home/mleich/10.5_A/sql/sql_show.cc:8673
JOIN::exec_inner() /home/mleich/10.5_A/sql/sql_select.cc:4401
JOIN::exec() /home/mleich/10.5_A/sql/sql_select.cc:4225
Possibly this happens due to us not having crash-safe DDL operations with respect to .frm files (to be fixed in
MDEV-17567).