Details
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Bug
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Status: Closed (View Workflow)
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Major
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Resolution: Fixed
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10.4.12, 10.4(EOL)
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Linux
Description
After upgrading from 10.3.22 to 10.4.12 I have encountered a strange issue - if two or more ' show global status where ...' are issued in parallel mysql crashes
Something like:
#!/bin/bash
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mysql -e 'show global status where Variable_name="Com_delete"' &
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mysql -e 'show global status where Variable_name="Com_insert"' &
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mysql -e 'show global status where Variable_name="Com_select"' &
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crashes the server reliably:
200316 20:09:03 [ERROR] mysqld got signal 11 ;
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This could be because you hit a bug. It is also possible that this binary
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or one of the libraries it was linked against is corrupt, improperly built,
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or misconfigured. This error can also be caused by malfunctioning hardware.
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To report this bug, see https://mariadb.com/kb/en/reporting-bugs
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We will try our best to scrape up some info that will hopefully help
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diagnose the problem, but since we have already crashed,
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something is definitely wrong and this may fail.
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Server version: 10.4.12-MariaDB-log
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key_buffer_size=209715200
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read_buffer_size=4194304
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max_used_connections=3
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max_threads=10002
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thread_count=20
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It is possible that mysqld could use up to
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key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 82388318 K bytes of memory
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Hope that's ok; if not, decrease some variables in the equation.
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Thread pointer: 0x7f7dba213dc8
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Attempting backtrace. You can use the following information to find out
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where mysqld died. If you see no messages after this, something went
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terribly wrong...
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stack_bottom = 0x7f7dba69f528 thread_stack 0x49000
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*** buffer overflow detected ***: /usr/sbin/mysqld terminated
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Fatal signal 6 while backtracing
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If you execute each query sequentially there are no problems.
The coredump looks like:
Core was generated by `/usr/sbin/mysqld'.
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Program terminated with signal SIGABRT, Aborted.
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#0 0x00007f8dbf36d160 in raise () from /lib64/libc.so.6
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(gdb) bt
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#0 0x00007f8dbf36d160 in raise () from /lib64/libc.so.6
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#1 0x00007f8dbf36e81f in abort () from /lib64/libc.so.6
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#2 0x00007f8dbf3b04a7 in __libc_message () from /lib64/libc.so.6
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#3 0x00007f8dbf440f6e in __fortify_fail_abort () from /lib64/libc.so.6
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#4 0x00007f8dbf440fa1 in __fortify_fail () from /lib64/libc.so.6
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#5 0x00007f8dbf43ee50 in __chk_fail () from /lib64/libc.so.6
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#6 0x00007f8dbf440eaa in __fdelt_warn () from /lib64/libc.so.6
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#7 0x000055f6b4164475 in my_addr_resolve (ptr=<optimized out>, loc=loc@entry=0x7f7dba699900) at /usr/src/debug/MariaDB-10.4.12/src_0/mysys/my_addr_resolve.c:234
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#8 0x000055f6b4149ba3 in print_with_addr_resolve (n=<optimized out>, addrs=0x7f7dba699920) at /usr/src/debug/MariaDB-10.4.12/src_0/mysys/stacktrace.c:254
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#9 my_print_stacktrace (stack_bottom=<optimized out>, thread_stack=<optimized out>, silent=silent@entry=0 '\000') at /usr/src/debug/MariaDB-10.4.12/src_0/mysys/stacktrace.c:273
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#10 0x000055f6b3bbd745 in handle_fatal_signal (sig=11) at /usr/src/debug/MariaDB-10.4.12/src_0/sql/signal_handler.cc:206
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#11 <signal handler called>
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#12 0x00007f8d9e89b55a in read_partitioned_counter () from /usr/lib64/mysql/plugin/ha_tokudb.so
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#13 0x00007f8d9e83fc2d in ?? () from /usr/lib64/mysql/plugin/ha_tokudb.so
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#14 0x000055f6b3a16752 in show_status_array (thd=thd@entry=0x7f7dba213dc8, wild=wild@entry=0x0, variables=0x7f8dbe0684d8, scope=scope@entry=SHOW_OPT_GLOBAL,
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status_var=status_var@entry=0x7f7dba69b260, prefix=prefix@entry=0x55f6b43291b5 "", table=0x7f7dba25e020, ucase_names=false, cond=0x7f7dba247e00)
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at /usr/src/debug/MariaDB-10.4.12/src_0/sql/sql_show.cc:3804
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#15 0x000055f6b3a199b3 in fill_status (thd=0x7f7dba213dc8, tables=0x7f7dba2482f8, cond=<optimized out>) at /usr/src/debug/MariaDB-10.4.12/src_0/sql/sql_show.cc:7946
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#16 0x000055f6b3a1f072 in get_schema_tables_result (join=join@entry=0x7f7dba248db0, executed_place=executed_place@entry=PROCESSED_BY_JOIN_EXEC)
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at /usr/src/debug/MariaDB-10.4.12/src_0/sql/sql_show.cc:8914
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#17 0x000055f6b3a052cd in JOIN::exec_inner (this=this@entry=0x7f7dba248db0) at /usr/src/debug/MariaDB-10.4.12/src_0/sql/sql_select.cc:4409
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#18 0x000055f6b3a058a3 in JOIN::exec (this=this@entry=0x7f7dba248db0) at /usr/src/debug/MariaDB-10.4.12/src_0/sql/sql_select.cc:4234
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#19 0x000055f6b3a03c61 in mysql_select (thd=0x7f7dba213dc8, tables=0x7f7dba2482f8, wild_num=0, fields=..., conds=<optimized out>, og_num=0, order=0x0, group=0x0, having=0x0,
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proc_param=0x0, select_options=2684619520, result=0x7f7dba248d88, unit=0x7f7dba217b30, select_lex=0x7f7dba218328) at /usr/src/debug/MariaDB-10.4.12/src_0/sql/sql_select.cc:4666
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#20 0x000055f6b3a04611 in handle_select (thd=0x7f7dba213dc8, lex=0x7f7dba217a70, result=0x7f7dba248d88, setup_tables_done_option=0)
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at /usr/src/debug/MariaDB-10.4.12/src_0/sql/sql_select.cc:408
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#21 0x000055f6b39a0c21 in execute_sqlcom_select (thd=0x7f7dba213dc8, all_tables=0x7f7dba2482f8) at /usr/src/debug/MariaDB-10.4.12/src_0/sql/sql_parse.cc:6360
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#22 0x000055f6b39ae27c in mysql_execute_command (thd=0x7f7dba213dc8) at /usr/src/debug/MariaDB-10.4.12/src_0/sql/sql_parse.cc:6394
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#23 0x000055f6b39b07da in mysql_parse (thd=0x7f7dba213dc8, rawbuf=<optimized out>, length=51, parser_state=0x7f7dba69e850, is_com_multi=<optimized out>, is_next_command=<optimized out>)
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at /usr/src/debug/MariaDB-10.4.12/src_0/sql/sql_parse.cc:7901
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#24 0x000055f6b39b2d71 in dispatch_command (command=command@entry=COM_QUERY, thd=thd@entry=0x7f7dba213dc8,
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packet=packet@entry=0x7f7dba231f89 "show global status where Variable_name=\"Com_delete\"", packet_length=packet_length@entry=51, is_com_multi=is_com_multi@entry=false,
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is_next_command=is_next_command@entry=false) at /usr/src/debug/MariaDB-10.4.12/src_0/sql/sql_parse.cc:1841
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#25 0x000055f6b39b4648 in do_command (thd=0x7f7dba213dc8) at /usr/src/debug/MariaDB-10.4.12/src_0/sql/sql_parse.cc:1359
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#26 0x000055f6b3a907fe in do_handle_one_connection (connect=connect@entry=0x7f8dbe044c68) at /usr/src/debug/MariaDB-10.4.12/src_0/sql/sql_connect.cc:1412
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#27 0x000055f6b3a908bd in handle_one_connection (arg=0x7f8dbe044c68) at /usr/src/debug/MariaDB-10.4.12/src_0/sql/sql_connect.cc:1316
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#28 0x00007f8dc18ab569 in start_thread () from /lib64/libpthread.so.0
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#29 0x00007f8dbf42f9ef in clone () from /lib64/libc.so.6
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(full backtrace in attachment)