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[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/home/travis/server/bin/mysqld --no-defaults --basedir=/home/travis/server --lc'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x00007f0ae3f8059f in pthread_kill () from /lib/x86_64-linux-gnu/libpthread.so.0
[Current thread is 1 (Thread 0x7f0a44578700 (LWP 6192))]

Thread 41 (Thread 0x7f0ae0058700 (LWP 6188)):
#0  0x000056335c687fe1 in ha_innobase::general_fetch (this=0x7f0adc29d590, buf=0x7f0adc4cd0c0 "\377", direction=1, match_mode=0) at /home/buildbot/buildbot/build/storage/innobase/handler/ha_innodb.cc:9535
No locals.
#1  0x000056335c4e77f7 in handler::ha_rnd_next (this=0x7f0adc29d590, buf=0x7f0adc4cd0c0 "\377") at /home/buildbot/buildbot/build/sql/handler.cc:2765
        this_tracker = 0x0
        result = <optimized out>
#2  0x000056335c5e43cc in rr_sequential (info=0x7f0adc087a30) at /home/buildbot/buildbot/build/sql/records.cc:481
        tmp = <optimized out>
#3  0x000056335c35bc22 in READ_RECORD::read_record (this=0x7f0adc087a30) at /home/buildbot/buildbot/build/sql/records.h:73
No locals.
#4  sub_select (join=0x7f0adc085d18, join_tab=0x7f0adc087968, end_of_records=<optimized out>) at /home/buildbot/buildbot/build/sql/sql_select.cc:19415
        error = <optimized out>
        rc = <optimized out>
        info = 0x7f0adc087a30
        skip_over = false
#5  0x000056335c37aa9c in do_select (procedure=<optimized out>, join=0x7f0adc085d18) at /home/buildbot/buildbot/build/sql/sql_select.cc:18936
        join_tab = 0x7f0adc087968
        rc = 0
        error = NESTED_LOOP_OK
#6  JOIN::exec_inner (this=this@entry=0x7f0adc085d18) at /home/buildbot/buildbot/build/sql/sql_select.cc:4040
        columns_list = 0x7f0adc06e260
#7  0x000056335c37acbc in JOIN::exec (this=this@entry=0x7f0adc085d18) at /home/buildbot/buildbot/build/sql/sql_select.cc:3834
No locals.
#8  0x000056335c379b1a in mysql_select (thd=thd@entry=0x7f0adc069cd8, tables=0x7f0adc0855d0, wild_num=<optimized out>, fields=..., conds=<optimized out>, og_num=<optimized out>, order=0x0, group=0x0, having=0x0, proc_param=0x0, select_options=551903562496, result=result@entry=0x7f0adc085cf0, unit=unit@entry=0x7f0adc06d9c8, select_lex=select_lex@entry=0x7f0adc06e138) at /home/buildbot/buildbot/build/sql/sql_select.cc:4239
        err = 0
        free_join = true
        join = 0x7f0adc085d18
#9  0x000056335c37aecc in handle_select (thd=thd@entry=0x7f0adc069cd8, lex=lex@entry=0x7f0adc06d900, result=result@entry=0x7f0adc085cf0, setup_tables_done_option=setup_tables_done_option@entry=0) at /home/buildbot/buildbot/build/sql/sql_select.cc:385
        unit = 0x7f0adc06d9c8
        res = <optimized out>
        select_lex = 0x7f0adc06e138
#10 0x000056335c241fbe in execute_sqlcom_select (thd=thd@entry=0x7f0adc069cd8, all_tables=0x7f0adc0855d0) at /home/buildbot/buildbot/build/sql/sql_parse.cc:6548
        save_protocol = 0x0
        lex = 0x7f0adc06d900
        result = 0x7f0adc085cf0
        res = <optimized out>
#11 0x000056335c326382 in mysql_execute_command (thd=thd@entry=0x7f0adc069cd8) at /home/buildbot/buildbot/build/sql/sql_parse.cc:3769
        privileges_requested = <optimized out>
        res = <optimized out>
        lex = 0x7f0adc06d900
        orig_binlog_format = <optimized out>
        up_result = 0
        rpl_filter = <optimized out>
        orig_current_stmt_binlog_format = BINLOG_FORMAT_ROW
        select_lex = 0x7f0adc06e138
        first_table = 0x7f0adc0855d0
        all_tables = 0x7f0adc0855d0
        unit = 0x7f0adc06d9c8
        have_table_map_for_update = false
#12 0x000056335c32d5d9 in mysql_parse (thd=thd@entry=0x7f0adc069cd8, rawbuf=<optimized out>, length=230, parser_state=parser_state@entry=0x7f0ae0057680, is_com_multi=is_com_multi@entry=false, is_next_command=is_next_command@entry=false) at /home/buildbot/buildbot/build/sql/sql_parse.cc:8092
        found_semicolon = <optimized out>
        lex = 0x7f0adc06d900
        err = <optimized out>
#13 0x000056335c32f75e in dispatch_command (command=command@entry=COM_QUERY, thd=thd@entry=0x7f0adc069cd8, packet=0x7f0adc06f619 "\373\001", packet_length=packet_length@entry=231, is_com_multi=is_com_multi@entry=false, is_next_command=is_next_command@entry=false) at /home/buildbot/buildbot/build/sql/sql_parse.cc:1851
        packet_end = 0x7f0adc083dc6 ""
        parser_state = {m_input = {m_compute_digest = false}, m_lip = {lookahead_token = -1, lookahead_yylval = 0x0, m_thd = 0x7f0adc069cd8, m_ptr = 0x7f0adc083dc7 "\004", m_tok_start = 0x7f0adc083dc7 "\004", m_tok_end = 0x7f0adc083dc7 "\004", m_end_of_query = 0x7f0adc083dc6 "", m_tok_start_prev = 0x7f0adc083dc6 "", m_buf = 0x7f0adc083ce0 "/* GenTest::Transform::ExecuteAsCTE */  WITH cte1 AS ( SELECT * from `table1_innodb_int_autoinc` FOR system_time ALL /* QNO 19960 CON_ID 18 */ ) SELECT * FROM cte1  /* TRANSFORM_OUTCOME_UNORDERED_MATC"..., m_buf_length = 230, m_echo = true, m_echo_saved = true, m_cpp_buf = 0x7f0adc083e28 "/* GenTest::Transform::ExecuteAsCTE */  WITH cte1 AS ( SELECT * from `table1_innodb_int_autoinc` FOR system_time ALL /* QNO 19960 CON_ID 18 */ ) SELECT * FROM cte1  /* TRANSFORM_OUTCOME_UNORDERED_MATC"..., m_cpp_ptr = 0x7f0adc083f0e "", m_cpp_tok_start = 0x7f0adc083f0e "", m_cpp_tok_start_prev = 0x7f0adc083f0e "", m_cpp_tok_end = 0x7f0adc083f0e "", m_body_utf8 = 0x0, m_body_utf8_ptr = 0x7f0adc22fa80 "", m_cpp_utf8_processed_ptr = 0x0, next_state = MY_LEX_END, found_semicolon = 0x0, ignore_space = false, stmt_prepare_mode = false, multi_statements = true, yylineno = 1, m_digest = 0x0, in_comment = NO_COMMENT, in_comment_saved = NO_COMMENT, m_cpp_text_start = 0x7f0adc083ec7 "cte1  /* TRANSFORM_OUTCOME_UNORDERED_MATCH */ /* QNO 19965 CON_ID 18 */", m_cpp_text_end = 0x7f0adc083ecb "  /* TRANSFORM_OUTCOME_UNORDERED_MATCH */ /* QNO 19965 CON_ID 18 */", m_underscore_cs = 0x0}, m_yacc = {yacc_yyss = 0x0, yacc_yyvs = 0x0, m_set_signal_info = {m_item = {0x0 <repeats 12 times>}}, m_lock_type = TL_READ_DEFAULT, m_mdl_type = MDL_SHARED_READ}, m_digest_psi = 0x0}
        net = 0x7f0ae0057680
        error = false
        do_end_of_statement = true
        drop_more_results = false
#14 0x000056335c32ff1e in do_command (thd=0x7f0adc069cd8) at /home/buildbot/buildbot/build/sql/sql_parse.cc:1396
        return_value = <optimized out>
        packet = <optimized out>
        packet_length = 232
        net = 0x7f0adc069f38
        command = COM_QUERY
#15 0x000056335c3f780f in do_handle_one_connection (connect=connect@entry=0x563362242c18) at /home/buildbot/buildbot/build/sql/sql_connect.cc:1402
        create_user = true
        thr_create_utime = <optimized out>
        thd = 0x7f0adc069cd8
#16 0x000056335c3f7934 in handle_one_connection (arg=0x563362242c18) at /home/buildbot/buildbot/build/sql/sql_connect.cc:1308
        connect = 0x563362242c18
#17 0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#18 0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 40 (Thread 0x7f0a369fe700 (LWP 6174)):
#0  0x00007f0ae3f7f360 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#1  0x000056335c675b7b in inline_mysql_cond_wait (mutex=0x7f0a369fde70, that=0x7f0a369fdea0, src_file=<optimized out>, src_line=<optimized out>) at /home/buildbot/buildbot/build/include/mysql/psi/mysql_thread.h:1178
        result = <optimized out>
        src_line = 306
        src_file = 0x56335cbe2ea0 "/home/buildbot/buildbot/build/storage/innobase/handler/ha_innodb.cc"
#2  thd_destructor_proxy () at /home/buildbot/buildbot/build/storage/innobase/handler/ha_innodb.cc:306
        thd_destructor_mutex = {m_mutex = {__data = {__lock = 0, __count = 0, __owner = 0, __nusers = 1, __kind = 0, __spins = 0, __list = {__prev = 0x0, __next = 0x0}}, __size = '\000' <repeats 12 times>, "\001", '\000' <repeats 26 times>, __align = 0}, m_psi = 0x0}
        thd_destructor_cond = {m_cond = {__data = {__lock = 0, __futex = 1, __total_seq = 1, __wakeup_seq = 0, __woken_seq = 0, __mutex = 0x7f0a369fde70, __nwaiters = 2, __broadcast_seq = 0}, __size = "\000\000\000\000\001\000\000\000\001", '\000' <repeats 23 times>, "pޟ6\n\177\000\000\002\000\000\000\000\000\000", __align = 4294967296}, m_psi = 0x0}
        myvar = <optimized out>
        thd = 0x563361fddb08
#3  0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#4  0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 39 (Thread 0x7f0a371ff700 (LWP 6173)):
#0  0x00007f0ae3f7f360 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#1  0x000056335c6f503b in os_event::wait (this=<optimized out>) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:161
        ret = <optimized out>
#2  os_event::wait_low (reset_sig_count=<optimized out>, this=0x56335e8c7520) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:331
No locals.
#3  os_event_wait_low (event=0x56335e8c7520, reset_sig_count=reset_sig_count@entry=0) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:520
No locals.
#4  0x000056335c8156ed in buf_resize_thread () at /home/buildbot/buildbot/build/storage/innobase/buf/buf0buf.cc:3147
No locals.
#5  0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#6  0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 38 (Thread 0x7f0a445c2700 (LWP 6190)):
#0  0x00007f0ae361874d in poll () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#1  0x000056335ca938fd in vio_io_wait (vio=vio@entry=0x5633626079b8, event=<optimized out>, timeout=28800000) at /home/buildbot/buildbot/build/vio/viosocket.c:962
        ret = <optimized out>
        revents = <optimized out>
        pfd = {fd = 98, events = 3, revents = 0}
        sd = 28800000
        state = {m_flags = 1146887120, m_socket = 0x5633623672d8, m_thread = 0x2030, m_number_of_bytes = 8248, m_timer_start = 139682073287632, m_timer = 0x56335c9f3cae <my_realloc+254>, m_operation = PSI_SOCKET_SENDMSG, m_src_file = 0x10050 <error: Cannot access memory at address 0x10050>, m_src_line = 0, m_wait = 0x563362283f08}
#2  0x000056335ca939f6 in vio_socket_io_wait (vio=0x5633626079b8, event=<optimized out>) at /home/buildbot/buildbot/build/vio/viosocket.c:119
        timeout = <optimized out>
        ret = <optimized out>
#3  0x000056335ca93c24 in vio_read (vio=0x5633626079b8, buf=0x5633623469f8 "I", size=4) at /home/buildbot/buildbot/build/vio/viosocket.c:196
        error = <optimized out>
        ret = <optimized out>
        flags = 64
#4  0x000056335c27ba9a in my_real_read (net=0x563362361bf8, complen=complen@entry=0x7f0a445c1e00, header=1 '\001') at /home/buildbot/buildbot/build/sql/net_serv.cc:962
        pos = 0x5633623469f8 "I"
        remain = 4
        retry_count = 0
        alarmed = 0 '\000'
        net_blocking = 0 '\000'
        count = 4
        server_extension = <optimized out>
        length = <optimized out>
        i = <optimized out>
        len = 18446744073709551615
#5  0x000056335c27c955 in my_net_read_packet_reallen (net=0x563362361bf8, read_from_server=<optimized out>, reallen=reallen@entry=0x7f0a445c1e58) at /home/buildbot/buildbot/build/sql/net_serv.cc:1243
        len = <optimized out>
        complen = <optimized out>
#6  0x000056335c27caad in my_net_read_packet (net=<optimized out>, read_from_server=<optimized out>) at /home/buildbot/buildbot/build/sql/net_serv.cc:1227
        reallen = 0
#7  0x000056335c32fe7d in do_command (thd=0x563362361998) at /home/buildbot/buildbot/build/sql/sql_parse.cc:1271
        return_value = <optimized out>
        packet = 0x0
        packet_length = 0
        net = 0x563362361bf8
        command = COM_TABLE_DUMP
#8  0x000056335c3f780f in do_handle_one_connection (connect=connect@entry=0x563362242c18) at /home/buildbot/buildbot/build/sql/sql_connect.cc:1402
        create_user = true
        thr_create_utime = <optimized out>
        thd = 0x563362361998
#9  0x000056335c3f7934 in handle_one_connection (arg=0x563362242c18) at /home/buildbot/buildbot/build/sql/sql_connect.cc:1308
        connect = 0x563362242c18
#10 0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#11 0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 37 (Thread 0x7f0a37a00700 (LWP 6172)):
#0  0x00007f0ae3f82c1d in nanosleep () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#1  0x000056335c6f5240 in os_thread_sleep (tm=tm@entry=1000000) at /home/buildbot/buildbot/build/storage/innobase/os/os0thread.cc:225
        t = {tv_sec = 1, tv_nsec = 0}
#2  0x000056335c8069aa in btr_defragment_thread () at /home/buildbot/buildbot/build/storage/innobase/btr/btr0defragment.cc:717
        item = 0x0
        now = <optimized out>
        elapsed = <optimized out>
        pcur = <optimized out>
        cursor = <optimized out>
        mtr = {m_impl = {m_memo = {m_heap = 0x0, m_list = {count = 1, start = 0x7f0a379ffa50, end = 0x7f0a379ffa50, node = &mtr_buf_t::block_t::m_node}, m_size = 0, m_first_block = {m_data = '\000' <repeats 499 times>, m_node = {prev = 0x0, next = 0x0}, m_used = 0}}, m_log = {m_heap = 0x0, m_list = {count = 1, start = 0x7f0a379ffc90, end = 0x7f0a379ffc90, node = &mtr_buf_t::block_t::m_node}, m_size = 0, m_first_block = {m_data = '\000' <repeats 499 times>, m_node = {prev = 0x0, next = 0x0}, m_used = 0}}, m_made_dirty = false, m_inside_ibuf = false, m_modifications = false, m_n_log_recs = 0, m_log_mode = 0, m_user_space = 0x0, m_state = MTR_STATE_INIT, m_flush_observer = 0x0, m_mtr = 0x0}, m_commit_lsn = 0}
        last_block = <optimized out>
        index = <optimized out>
        first_block = <optimized out>
#3  0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#4  0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 36 (Thread 0x7f0ae00ec700 (LWP 6184)):
#0  0x00007f0ae361874d in poll () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#1  0x000056335ca938fd in vio_io_wait (vio=vio@entry=0x563362246968, event=<optimized out>, timeout=28800000) at /home/buildbot/buildbot/build/vio/viosocket.c:962
        ret = <optimized out>
        revents = <optimized out>
        pfd = {fd = 99, events = 3, revents = 0}
        sd = 28800000
        state = {m_flags = 3759061968, m_socket = 0x7f0adc0311d8, m_thread = 0x2030, m_number_of_bytes = 139684740719885, m_timer_start = 139684685462480, m_timer = 0x6050, m_operation = 3690987640, m_src_file = 0xfffffffffffff000 <error: Cannot access memory at address 0xfffffffffffff000>, m_src_line = 0, m_wait = 0x7000}
#2  0x000056335ca939f6 in vio_socket_io_wait (vio=0x563362246968, event=<optimized out>) at /home/buildbot/buildbot/build/vio/viosocket.c:119
        timeout = <optimized out>
        ret = <optimized out>
#3  0x000056335ca93c24 in vio_read (vio=0x563362246968, buf=0x7f0adc033628 <incomplete sequence \341>, size=4) at /home/buildbot/buildbot/build/vio/viosocket.c:196
        error = <optimized out>
        ret = <optimized out>
        flags = 64
#4  0x000056335c27ba9a in my_real_read (net=0x7f0adc02baf8, complen=complen@entry=0x7f0ae00ebe00, header=1 '\001') at /home/buildbot/buildbot/build/sql/net_serv.cc:962
        pos = 0x7f0adc033628 <incomplete sequence \341>
        remain = 4
        retry_count = 0
        alarmed = 0 '\000'
        net_blocking = 0 '\000'
        count = 4
        server_extension = <optimized out>
        length = <optimized out>
        i = <optimized out>
        len = 18446744073709551615
#5  0x000056335c27c955 in my_net_read_packet_reallen (net=0x7f0adc02baf8, read_from_server=<optimized out>, reallen=reallen@entry=0x7f0ae00ebe58) at /home/buildbot/buildbot/build/sql/net_serv.cc:1243
        len = <optimized out>
        complen = <optimized out>
#6  0x000056335c27caad in my_net_read_packet (net=<optimized out>, read_from_server=<optimized out>) at /home/buildbot/buildbot/build/sql/net_serv.cc:1227
        reallen = 0
#7  0x000056335c32fe7d in do_command (thd=0x7f0adc02b898) at /home/buildbot/buildbot/build/sql/sql_parse.cc:1271
        return_value = <optimized out>
        packet = 0x0
        packet_length = 0
        net = 0x7f0adc02baf8
        command = COM_DELAYED_INSERT
#8  0x000056335c3f780f in do_handle_one_connection (connect=connect@entry=0x5633626311a8) at /home/buildbot/buildbot/build/sql/sql_connect.cc:1402
        create_user = true
        thr_create_utime = <optimized out>
        thd = 0x7f0adc02b898
#9  0x000056335c3f7934 in handle_one_connection (arg=0x5633626311a8) at /home/buildbot/buildbot/build/sql/sql_connect.cc:1308
        connect = 0x5633626311a8
#10 0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#11 0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 35 (Thread 0x7f0a38a02700 (LWP 6170)):
#0  0x00007f0ae3f7f360 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#1  0x000056335c6f503b in os_event::wait (this=<optimized out>) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:161
        ret = <optimized out>
#2  os_event::wait_low (reset_sig_count=<optimized out>, this=0x56335e8c7220) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:331
No locals.
#3  os_event_wait_low (event=0x56335e8c7220, reset_sig_count=reset_sig_count@entry=0) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:520
No locals.
#4  0x000056335c782321 in srv_resume_thread (wait=true, slot=0x56335d3875f0 <srv_sys+304>, sig_count=<optimized out>, timeout_usec=<optimized out>) at /home/buildbot/buildbot/build/storage/innobase/srv/srv0srv.cc:912
        timeout = false
        timeout_usec = 0
        sig_count = 0
#5  srv_worker_thread (arg=<optimized out>) at /home/buildbot/buildbot/build/storage/innobase/srv/srv0srv.cc:2495
        slot = 0x56335d3875f0 <srv_sys+304>
        thd = 0x7f0adc006b58
#6  0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#7  0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 34 (Thread 0x7f0ae00a2700 (LWP 6186)):
#0  0x00007f0ae361874d in poll () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#1  0x000056335ca938fd in vio_io_wait (vio=vio@entry=0x5633621a2108, event=<optimized out>, timeout=28800000) at /home/buildbot/buildbot/build/vio/viosocket.c:962
        ret = <optimized out>
        revents = <optimized out>
        pfd = {fd = 66, events = 3, revents = 1}
        sd = 28800000
        state = {m_flags = 3758758864, m_socket = 0x5633622be998, m_thread = 0x2030, m_number_of_bytes = 8248, m_timer_start = 139684685159376, m_timer = 0x56335c9f3cae <my_realloc+254>, m_operation = PSI_SOCKET_SENDMSG, m_src_file = 0x10050 <error: Cannot access memory at address 0x10050>, m_src_line = 0, m_wait = 0x5633620bfd98}
#2  0x000056335ca939f6 in vio_socket_io_wait (vio=0x5633621a2108, event=<optimized out>) at /home/buildbot/buildbot/build/vio/viosocket.c:119
        timeout = <optimized out>
        ret = <optimized out>
#3  0x000056335ca93c24 in vio_read (vio=0x5633621a2108, buf=0x5633624f5458 "\236", size=4) at /home/buildbot/buildbot/build/vio/viosocket.c:196
        error = <optimized out>
        ret = <optimized out>
        flags = 64
#4  0x000056335c27ba9a in my_real_read (net=0x563362507618, complen=complen@entry=0x7f0ae00a1e00, header=1 '\001') at /home/buildbot/buildbot/build/sql/net_serv.cc:962
        pos = 0x5633624f5458 "\236"
        remain = 4
        retry_count = 0
        alarmed = 0 '\000'
        net_blocking = 0 '\000'
        count = 4
        server_extension = <optimized out>
        length = <optimized out>
        i = <optimized out>
        len = 18446744073709551615
#5  0x000056335c27c955 in my_net_read_packet_reallen (net=0x563362507618, read_from_server=<optimized out>, reallen=reallen@entry=0x7f0ae00a1e58) at /home/buildbot/buildbot/build/sql/net_serv.cc:1243
        len = <optimized out>
        complen = <optimized out>
#6  0x000056335c27caad in my_net_read_packet (net=<optimized out>, read_from_server=<optimized out>) at /home/buildbot/buildbot/build/sql/net_serv.cc:1227
        reallen = 0
#7  0x000056335c32fe7d in do_command (thd=0x5633625073b8) at /home/buildbot/buildbot/build/sql/sql_parse.cc:1271
        return_value = <optimized out>
        packet = 0x0
        packet_length = 0
        net = 0x563362507618
        command = COM_CHANGE_USER
#8  0x000056335c3f780f in do_handle_one_connection (connect=connect@entry=0x5633623ad468) at /home/buildbot/buildbot/build/sql/sql_connect.cc:1402
        create_user = true
        thr_create_utime = <optimized out>
        thd = 0x5633625073b8
#9  0x000056335c3f7934 in handle_one_connection (arg=0x5633623ad468) at /home/buildbot/buildbot/build/sql/sql_connect.cc:1308
        connect = 0x5633623ad468
#10 0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#11 0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 33 (Thread 0x7f0ae0360700 (LWP 6178)):
#0  0x00007f0ae361874d in poll () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#1  0x000056335ca938fd in vio_io_wait (vio=vio@entry=0x5633620691a8, event=<optimized out>, timeout=28800000) at /home/buildbot/buildbot/build/vio/viosocket.c:962
        ret = <optimized out>
        revents = <optimized out>
        pfd = {fd = 46, events = 3, revents = 0}
        sd = 28800000
        state = {m_flags = 1564644672, m_socket = 0x796d5674, m_thread = 0x563362069e18, m_number_of_bytes = 72, m_timer_start = 139684688034720, m_timer = 0x56335c9d3f6d <alloc_dynamic+157>, m_operation = 1644610896, m_src_file = 0x56335d429540 <Sys_time_zone> "\220\300%]3V", m_src_line = -533332960, m_wait = 0x56335c9d8999 <my_hash_insert+137>}
#2  0x000056335ca939f6 in vio_socket_io_wait (vio=0x5633620691a8, event=<optimized out>) at /home/buildbot/buildbot/build/vio/viosocket.c:119
        timeout = <optimized out>
        ret = <optimized out>
#3  0x000056335ca93c24 in vio_read (vio=0x5633620691a8, buf=0x5633621cf7e8 "(", size=4) at /home/buildbot/buildbot/build/vio/viosocket.c:196
        error = <optimized out>
        ret = <optimized out>
        flags = 64
#4  0x000056335c27ba9a in my_real_read (net=0x563362073468, complen=complen@entry=0x7f0ae035fe00, header=1 '\001') at /home/buildbot/buildbot/build/sql/net_serv.cc:962
        pos = 0x5633621cf7e8 "("
        remain = 4
        retry_count = 0
        alarmed = 0 '\000'
        net_blocking = 0 '\000'
        count = 4
        server_extension = <optimized out>
        length = <optimized out>
        i = <optimized out>
        len = 18446744073709551615
#5  0x000056335c27c955 in my_net_read_packet_reallen (net=0x563362073468, read_from_server=<optimized out>, reallen=reallen@entry=0x7f0ae035fe58) at /home/buildbot/buildbot/build/sql/net_serv.cc:1243
        len = <optimized out>
        complen = <optimized out>
#6  0x000056335c27caad in my_net_read_packet (net=<optimized out>, read_from_server=<optimized out>) at /home/buildbot/buildbot/build/sql/net_serv.cc:1227
        reallen = 0
#7  0x000056335c32fe7d in do_command (thd=0x563362073208) at /home/buildbot/buildbot/build/sql/sql_parse.cc:1271
        return_value = <optimized out>
        packet = 0x0
        packet_length = 0
        net = 0x563362073468
        command = COM_STATISTICS
#8  0x000056335c3f780f in do_handle_one_connection (connect=connect@entry=0x563362068e08) at /home/buildbot/buildbot/build/sql/sql_connect.cc:1402
        create_user = true
        thr_create_utime = <optimized out>
        thd = 0x563362073208
#9  0x000056335c3f7934 in handle_one_connection (arg=0x563362068e08) at /home/buildbot/buildbot/build/sql/sql_connect.cc:1308
        connect = 0x563362068e08
#10 0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#11 0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 32 (Thread 0x7f0a39203700 (LWP 6169)):
#0  0x00007f0ae3f7f360 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#1  0x000056335c6f503b in os_event::wait (this=<optimized out>) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:161
        ret = <optimized out>
#2  os_event::wait_low (reset_sig_count=<optimized out>, this=0x56335e8c71a0) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:331
No locals.
#3  os_event_wait_low (event=0x56335e8c71a0, reset_sig_count=reset_sig_count@entry=0) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:520
No locals.
#4  0x000056335c782321 in srv_resume_thread (wait=true, slot=0x56335d3875b8 <srv_sys+248>, sig_count=<optimized out>, timeout_usec=<optimized out>) at /home/buildbot/buildbot/build/storage/innobase/srv/srv0srv.cc:912
        timeout = false
        timeout_usec = 0
        sig_count = 0
#5  srv_worker_thread (arg=<optimized out>) at /home/buildbot/buildbot/build/storage/innobase/srv/srv0srv.cc:2495
        slot = 0x56335d3875b8 <srv_sys+248>
        thd = 0x563361fcddc8
#6  0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#7  0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 31 (Thread 0x7f0a4452e700 (LWP 6193)):
#0  0x00007f0ae3f7f709 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#1  0x000056335c271427 in inline_mysql_cond_timedwait (src_line=3006, abstime=0x7f0a4452de30, mutex=0x56335d406fe0 <LOCK_thread_cache>, that=0x56335d4099c0 <COND_thread_cache>, src_file=<optimized out>) at /home/buildbot/buildbot/build/include/mysql/psi/mysql_thread.h:1215
        result = <optimized out>
        src_file = 0x56335caba868 "/home/buildbot/buildbot/build/sql/mysqld.cc"
#2  cache_thread (thd=0x5633622a5be8) at /home/buildbot/buildbot/build/sql/mysqld.cc:3005
        error = -516
        abstime = {tv_sec = 1546392525, tv_nsec = 671818000}
#3  one_thread_per_connection_end (thd=0x5633622a5be8, put_in_cache=<optimized out>) at /home/buildbot/buildbot/build/sql/mysqld.cc:3092
        wsrep_applier = <optimized out>
#4  0x000056335c3f779e in do_handle_one_connection (connect=connect@entry=0x563362356938) at /home/buildbot/buildbot/build/sql/sql_connect.cc:1421
        create_user = true
        thr_create_utime = <optimized out>
        thd = 0xfffffffffffffdfc
#5  0x000056335c3f7934 in handle_one_connection (arg=0x563362356938) at /home/buildbot/buildbot/build/sql/sql_connect.cc:1308
        connect = 0x563362356938
#6  0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#7  0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 30 (Thread 0x7f0a39a04700 (LWP 6168)):
#0  0x00007f0ae3f7f360 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#1  0x000056335c6f503b in os_event::wait (this=<optimized out>) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:161
        ret = <optimized out>
#2  os_event::wait_low (reset_sig_count=<optimized out>, this=0x56335e8c72a0) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:331
No locals.
#3  os_event_wait_low (event=0x56335e8c72a0, reset_sig_count=reset_sig_count@entry=0) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:520
No locals.
#4  0x000056335c782321 in srv_resume_thread (wait=true, slot=0x56335d387628 <srv_sys+360>, sig_count=<optimized out>, timeout_usec=<optimized out>) at /home/buildbot/buildbot/build/storage/innobase/srv/srv0srv.cc:912
        timeout = false
        timeout_usec = 0
        sig_count = 0
#5  srv_worker_thread (arg=<optimized out>) at /home/buildbot/buildbot/build/storage/innobase/srv/srv0srv.cc:2495
        slot = 0x56335d387628 <srv_sys+360>
        thd = 0x7f0adc000f18
#6  0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#7  0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 29 (Thread 0x7f0ae03aa700 (LWP 6177)):
#0  0x00007f0ae361874d in poll () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#1  0x000056335ca938fd in vio_io_wait (vio=vio@entry=0x563362068e68, event=<optimized out>, timeout=28800000) at /home/buildbot/buildbot/build/vio/viosocket.c:962
        ret = <optimized out>
        revents = <optimized out>
        pfd = {fd = 45, events = 3, revents = 0}
        sd = 28800000
        state = {m_flags = 3761937360, m_socket = 0x7f0adc018ea8, m_thread = 0x7f0adc000028, m_number_of_bytes = 139684740719885, m_timer_start = 139684617388144, m_timer = 0x6050, m_operation = 3690987640, m_src_file = 0xfffffffffffff000 <error: Cannot access memory at address 0xfffffffffffff000>, m_src_line = 0, m_wait = 0x7000}
#2  0x000056335ca939f6 in vio_socket_io_wait (vio=0x563362068e68, event=<optimized out>) at /home/buildbot/buildbot/build/vio/viosocket.c:119
        timeout = <optimized out>
        ret = <optimized out>
#3  0x000056335ca93c24 in vio_read (vio=0x563362068e68, buf=0x7f0adc01b518 "\a", size=4) at /home/buildbot/buildbot/build/vio/viosocket.c:196
        error = <optimized out>
        ret = <optimized out>
        flags = 64
#4  0x000056335c27ba9a in my_real_read (net=0x7f0adc012e58, complen=complen@entry=0x7f0ae03a9e00, header=1 '\001') at /home/buildbot/buildbot/build/sql/net_serv.cc:962
        pos = 0x7f0adc01b518 "\a"
        remain = 4
        retry_count = 0
        alarmed = 0 '\000'
        net_blocking = 0 '\000'
        count = 4
        server_extension = <optimized out>
        length = <optimized out>
        i = <optimized out>
        len = 18446744073709551615
#5  0x000056335c27c955 in my_net_read_packet_reallen (net=0x7f0adc012e58, read_from_server=<optimized out>, reallen=reallen@entry=0x7f0ae03a9e58) at /home/buildbot/buildbot/build/sql/net_serv.cc:1243
        len = <optimized out>
        complen = <optimized out>
#6  0x000056335c27caad in my_net_read_packet (net=<optimized out>, read_from_server=<optimized out>) at /home/buildbot/buildbot/build/sql/net_serv.cc:1227
        reallen = 0
#7  0x000056335c32fe7d in do_command (thd=0x7f0adc012bf8) at /home/buildbot/buildbot/build/sql/sql_parse.cc:1271
        return_value = <optimized out>
        packet = 0x0
        packet_length = 0
        net = 0x7f0adc012e58
        command = COM_SHUTDOWN
#8  0x000056335c3f780f in do_handle_one_connection (connect=connect@entry=0x563362068e08) at /home/buildbot/buildbot/build/sql/sql_connect.cc:1402
        create_user = true
        thr_create_utime = <optimized out>
        thd = 0x7f0adc012bf8
#9  0x000056335c3f7934 in handle_one_connection (arg=0x563362068e08) at /home/buildbot/buildbot/build/sql/sql_connect.cc:1308
        connect = 0x563362068e08
#10 0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#11 0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 28 (Thread 0x7f0a3a205700 (LWP 6167)):
#0  0x00007f0ae3f7f709 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#1  0x000056335c6f4aa1 in os_event::timed_wait (this=this@entry=0x56335e8c7120, abstime=abstime@entry=0x7f0a3a204d10) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:281
        ret = <optimized out>
#2  0x000056335c6f4ce7 in os_event::wait_time_low (this=0x56335e8c7120, time_in_usec=time_in_usec@entry=10000, reset_sig_count=<optimized out>, reset_sig_count@entry=21680) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:403
        timed_out = false
        abstime = {tv_sec = 1546392232, tv_nsec = 764438000}
#3  0x000056335c6f4fda in os_event_wait_time_low (event=<optimized out>, time_in_usec=time_in_usec@entry=10000, reset_sig_count=reset_sig_count@entry=21680) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:503
No locals.
#4  0x000056335c784419 in srv_resume_thread (timeout_usec=10000, wait=<optimized out>, sig_count=21680, slot=0x56335d387580 <srv_sys+192>) at /home/buildbot/buildbot/build/storage/innobase/srv/srv0srv.cc:909
        timeout = <optimized out>
#5  srv_purge_coordinator_suspend (rseg_history_len=64, slot=0x56335d387580 <srv_sys+192>) at /home/buildbot/buildbot/build/storage/innobase/srv/srv0srv.cc:2632
        wait = <optimized out>
        stop = false
        sig_count = 21680
#6  srv_purge_coordinator_thread (arg=<optimized out>) at /home/buildbot/buildbot/build/storage/innobase/srv/srv0srv.cc:2707
        thd = 0x563361fc8048
        slot = 0x56335d387580 <srv_sys+192>
        n_total_purged = <optimized out>
        rseg_history_len = 64
#7  0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#8  0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 27 (Thread 0x7f0a3b207700 (LWP 6165)):
#0  0x00007f0ae3f7f709 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#1  0x000056335c6f4aa1 in os_event::timed_wait (this=this@entry=0x563361fb35d0, abstime=abstime@entry=0x7f0a3b206c50) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:281
        ret = <optimized out>
#2  0x000056335c6f4ce7 in os_event::wait_time_low (this=0x563361fb35d0, time_in_usec=time_in_usec@entry=5000000, reset_sig_count=<optimized out>, reset_sig_count@entry=13) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:403
        timed_out = false
        abstime = {tv_sec = 1546392237, tv_nsec = 573206000}
#3  0x000056335c6f4fda in os_event_wait_time_low (event=<optimized out>, time_in_usec=time_in_usec@entry=5000000, reset_sig_count=reset_sig_count@entry=13) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:503
No locals.
#4  0x000056335c7cfe0b in ib_wqueue_timedwait (wq=wq@entry=0x563361f468e0, wait_in_usecs=wait_in_usecs@entry=5000000) at /home/buildbot/buildbot/build/storage/innobase/ut/ut0wqueue.cc:163
        error = <optimized out>
        sig_count = 13
#5  0x000056335c8b94ea in fts_optimize_thread (arg=0x563361f468e0) at /home/buildbot/buildbot/build/storage/innobase/fts/fts0opt.cc:2897
        msg = <optimized out>
        current = <optimized out>
        done = <optimized out>
        n_tables = 0
        n_optimize = <optimized out>
        wq = 0x563361f468e0
#6  0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#7  0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 26 (Thread 0x7f0a467da700 (LWP 6164)):
#0  0x00007f0ae3f7f709 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#1  0x000056335c6f4aa1 in os_event::timed_wait (this=this@entry=0x563361f871d0, abstime=abstime@entry=0x7f0a467d9da0) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:281
        ret = <optimized out>
#2  0x000056335c6f4ce7 in os_event::wait_time_low (this=0x563361f871d0, time_in_usec=time_in_usec@entry=10000000, reset_sig_count=<optimized out>, reset_sig_count@entry=0) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:403
        timed_out = false
        abstime = {tv_sec = 1546392242, tv_nsec = 325154000}
#3  0x000056335c6f4fda in os_event_wait_time_low (event=<optimized out>, time_in_usec=time_in_usec@entry=10000000, reset_sig_count=reset_sig_count@entry=0) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:503
No locals.
#4  0x000056335c86cbf3 in dict_stats_thread () at /home/buildbot/buildbot/build/storage/innobase/dict/dict0stats_bg.cc:460
No locals.
#5  0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#6  0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 25 (Thread 0x7f0a44fd7700 (LWP 6163)):
#0  0x00007f0ae3f7f709 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#1  0x000056335c6f4aa1 in os_event::timed_wait (this=this@entry=0x56335e8c73a0, abstime=abstime@entry=0x7f0a44fd6de0) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:281
        ret = <optimized out>
#2  0x000056335c6f4ce7 in os_event::wait_time_low (this=0x56335e8c73a0, time_in_usec=time_in_usec@entry=5000000, reset_sig_count=<optimized out>) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:403
        timed_out = false
        abstime = {tv_sec = 1546392237, tv_nsec = 273054000}
#3  0x000056335c6f4fda in os_event_wait_time_low (event=<optimized out>, time_in_usec=time_in_usec@entry=5000000, reset_sig_count=<optimized out>) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:503
No locals.
#4  0x000056335c780000 in srv_monitor_thread () at /home/buildbot/buildbot/build/storage/innobase/srv/srv0srv.cc:1684
        sig_count = <optimized out>
        time_elapsed = <optimized out>
        last_monitor_time = 1546392222
        current_time = <optimized out>
        mutex_skipped = 0
        last_srv_print_monitor = 0
#5  0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#6  0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 24 (Thread 0x7f0ae03f4700 (LWP 6176)):
#0  0x00007f0ae3f7f360 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#1  0x000056335c28e3e3 in inline_mysql_cond_wait (src_line=513, that=<optimized out>, mutex=<optimized out>, src_file=<optimized out>) at /home/buildbot/buildbot/build/include/mysql/psi/mysql_thread.h:1178
        result = <optimized out>
        src_file = 0x56335cac4ba8 "/home/buildbot/buildbot/build/sql/slave.cc"
#2  handle_slave_background (arg=<optimized out>) at /home/buildbot/buildbot/build/sql/slave.cc:513
        kill_list = 0x0
        create_list = 0x0
        thd = 0x56335e887b78
        old_stage = {m_key = 0, m_name = 0x56335cabfe12 "Processing requests", m_flags = 0}
        stop = false
#3  0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#4  0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 23 (Thread 0x7f0a457d8700 (LWP 6162)):
#0  0x00007f0ae3f7f709 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#1  0x000056335c6f4aa1 in os_event::timed_wait (this=this@entry=0x56335e8c7320, abstime=abstime@entry=0x7f0a457d7d00) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:281
        ret = <optimized out>
#2  0x000056335c6f4ce7 in os_event::wait_time_low (this=0x56335e8c7320, time_in_usec=time_in_usec@entry=1000000, reset_sig_count=<optimized out>) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:403
        timed_out = false
        abstime = {tv_sec = 1546392233, tv_nsec = 356062000}
#3  0x000056335c6f4fda in os_event_wait_time_low (event=<optimized out>, time_in_usec=time_in_usec@entry=1000000, reset_sig_count=<optimized out>) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:503
No locals.
#4  0x000056335c78095c in srv_error_monitor_thread () at /home/buildbot/buildbot/build/storage/innobase/srv/srv0srv.cc:1848
        old_lsn = 1845427272
        sig_count = <optimized out>
        waiter = 139682092254976
        old_waiter = 139682092254976
        sema = 0x0
        old_sema = 0x0
        fatal_cnt = 0
        new_lsn = 1845427272
#5  0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#6  0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 22 (Thread 0x7f0ae4c4f700 (LWP 6175)):
#0  0x00007f0ae3f83156 in sigwait () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#1  0x000056335c2701af in signal_hand (arg=<optimized out>) at /home/buildbot/buildbot/build/sql/mysqld.cc:3556
        error = <optimized out>
        set = {__val = {548869, 0 <repeats 15 times>}}
        sig = 0
#2  0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#3  0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 21 (Thread 0x7f0a45fd9700 (LWP 6161)):
#0  0x00007f0ae3f7f709 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#1  0x000056335c6f4aa1 in os_event::timed_wait (this=this@entry=0x563361f63c20, abstime=abstime@entry=0x7f0a45fd8d90) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:281
        ret = <optimized out>
#2  0x000056335c6f4ce7 in os_event::wait_time_low (this=this@entry=0x563361f63c20, time_in_usec=time_in_usec@entry=1000000, reset_sig_count=<optimized out>, reset_sig_count@entry=1) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:403
        timed_out = false
        abstime = {tv_sec = 1546392233, tv_nsec = 518931000}
#3  0x000056335c6f4fda in os_event_wait_time_low (event=event@entry=0x563361f63c20, time_in_usec=time_in_usec@entry=1000000, reset_sig_count=reset_sig_count@entry=1) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:503
No locals.
#4  0x000056335c6c93d4 in lock_wait_timeout_thread () at /home/buildbot/buildbot/build/storage/innobase/lock/lock0wait.cc:543
        slot = <optimized out>
        sig_count = 1
        event = 0x563361f63c20
#5  0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#6  0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 20 (Thread 0x7f0a38201700 (LWP 6171)):
#0  0x00007f0ae3f7f360 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#1  0x000056335c6f503b in os_event::wait (this=<optimized out>) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:161
        ret = <optimized out>
#2  os_event::wait_low (reset_sig_count=<optimized out>, this=0x56335e8c7420) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:331
No locals.
#3  os_event_wait_low (event=0x56335e8c7420, reset_sig_count=reset_sig_count@entry=0) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:520
No locals.
#4  0x000056335c81d9b9 in buf_dump_thread () at /home/buildbot/buildbot/build/storage/innobase/buf/buf0dump.cc:835
No locals.
#5  0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#6  0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 19 (Thread 0x7f0a3cc80700 (LWP 6158)):
#0  0x00007f0ae3f7f360 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#1  0x000056335c6f503b in os_event::wait (this=<optimized out>) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:161
        ret = <optimized out>
#2  os_event::wait_low (reset_sig_count=<optimized out>, this=0x563361f64d20) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:331
No locals.
#3  os_event_wait_low (event=0x563361f64d20, reset_sig_count=reset_sig_count@entry=0) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:520
No locals.
#4  0x000056335c823463 in buf_flush_page_cleaner_worker (arg=<optimized out>) at /home/buildbot/buildbot/build/storage/innobase/buf/buf0flu.cc:3495
        thread_no = 1
#5  0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#6  0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 18 (Thread 0x7f0a3aa06700 (LWP 6166)):
#0  0x00007f0ae3f82c1d in nanosleep () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#1  0x000056335c6f5240 in os_thread_sleep (tm=tm@entry=1000000) at /home/buildbot/buildbot/build/storage/innobase/os/os0thread.cc:225
        t = {tv_sec = 1, tv_nsec = 0}
#2  0x000056335c7818c3 in srv_master_sleep () at /home/buildbot/buildbot/build/storage/innobase/srv/srv0srv.cc:2320
No locals.
#3  srv_master_thread (arg=<optimized out>) at /home/buildbot/buildbot/build/storage/innobase/srv/srv0srv.cc:2361
        slot = <optimized out>
        old_activity_count = 442165
#4  0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#5  0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 17 (Thread 0x7f0a3d481700 (LWP 6157)):
#0  0x00007f0ae3f7f360 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#1  0x000056335c6f503b in os_event::wait (this=<optimized out>) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:161
        ret = <optimized out>
#2  os_event::wait_low (reset_sig_count=<optimized out>, this=0x563361f64d20) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:331
No locals.
#3  os_event_wait_low (event=0x563361f64d20, reset_sig_count=reset_sig_count@entry=0) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:520
No locals.
#4  0x000056335c823463 in buf_flush_page_cleaner_worker (arg=<optimized out>) at /home/buildbot/buildbot/build/storage/innobase/buf/buf0flu.cc:3495
        thread_no = 2
#5  0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#6  0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 16 (Thread 0x7f0a3c47f700 (LWP 6159)):
#0  0x00007f0ae3f7f360 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#1  0x000056335c6f503b in os_event::wait (this=<optimized out>) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:161
        ret = <optimized out>
#2  os_event::wait_low (reset_sig_count=<optimized out>, this=0x563361f64d20) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:331
No locals.
#3  os_event_wait_low (event=0x563361f64d20, reset_sig_count=reset_sig_count@entry=0) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:520
No locals.
#4  0x000056335c823463 in buf_flush_page_cleaner_worker (arg=<optimized out>) at /home/buildbot/buildbot/build/storage/innobase/buf/buf0flu.cc:3495
        thread_no = 0
#5  0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#6  0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 15 (Thread 0x7f0a3e483700 (LWP 6155)):
#0  0x00007f0ae3f7f709 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#1  0x000056335c6f4aa1 in os_event::timed_wait (this=this@entry=0x56335e8c74a0, abstime=abstime@entry=0x7f0a3e482c20) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:281
        ret = <optimized out>
#2  0x000056335c6f4ce7 in os_event::wait_time_low (this=0x56335e8c74a0, time_in_usec=time_in_usec@entry=962000, reset_sig_count=<optimized out>, reset_sig_count@entry=9503) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:403
        timed_out = false
        abstime = {tv_sec = 1546392233, tv_nsec = 103139000}
#3  0x000056335c6f4fda in os_event_wait_time_low (event=<optimized out>, time_in_usec=time_in_usec@entry=962000, reset_sig_count=reset_sig_count@entry=9503) at /home/buildbot/buildbot/build/storage/innobase/os/os0event.cc:503
No locals.
#4  0x000056335c8238c8 in pc_sleep_if_needed (cur_time=1546392232141, sig_count=9503, next_loop_time=1546392233103) at /home/buildbot/buildbot/build/storage/innobase/buf/buf0flu.cc:2685
No locals.
#5  buf_flush_page_cleaner_coordinator () at /home/buildbot/buildbot/build/storage/innobase/buf/buf0flu.cc:3144
        curr_time = 1546392232141
        n_flushed_last = 68
        warn_count = 0
        sig_count = 9503
        next_loop_time = 1546392233103
        n_flushed = 68
        ret_sleep = <optimized out>
        warn_interval = 1
        last_pages = 68
        n_evicted = 0
        last_activity = 442170
        success = 205
#6  0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#7  0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 14 (Thread 0x7f0a3fc86700 (LWP 6152)):
#0  0x00007f0ae49de64a in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
No symbol table info available.
#1  0x000056335c6ec54c in LinuxAIOHandler::collect (this=this@entry=0x7f0a3fc85c90) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:1920
        events = 0x56335e97c6d0
        timeout = {tv_sec = 0, tv_nsec = 500000000}
        ret = 0
        io_ctx = 0x7f0ae4c62000
        start_pos = 256
        end_pos = 512
#2  0x000056335c6ecb22 in LinuxAIOHandler::poll (this=this@entry=0x7f0a3fc85c90, m1=m1@entry=0x7f0a3fc85d30, m2=m2@entry=0x7f0a3fc85d40, request=request@entry=0x7f0a3fc85d50) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:2065
        n_pending = 0
        err = <optimized out>
#3  0x000056335c6f35d7 in os_aio_linux_handler (request=0x7f0a3fc85d50, m2=0x7f0a3fc85d40, m1=0x7f0a3fc85d30, global_segment=7) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:2119
No locals.
#4  os_aio_handler (segment=segment@entry=7, m1=m1@entry=0x7f0a3fc85d30, m2=m2@entry=0x7f0a3fc85d40, request=request@entry=0x7f0a3fc85d50) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:5672
No locals.
#5  0x000056335c87a5de in fil_aio_wait (segment=segment@entry=7) at /home/buildbot/buildbot/build/storage/innobase/fil/fil0fil.cc:4473
        node = <optimized out>
        type = {m_bpage = 0x0, m_fil_node = 0x0, m_type = 1}
        message = <optimized out>
        err = <optimized out>
        space_id = <optimized out>
        purpose = <optimized out>
#6  0x000056335c785568 in io_handler_thread (arg=<optimized out>) at /home/buildbot/buildbot/build/storage/innobase/srv/srv0start.cc:327
        segment = 7
        start = <optimized out>
#7  0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#8  0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 13 (Thread 0x7f0a3ec84700 (LWP 6154)):
#0  0x00007f0ae49de64a in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
No symbol table info available.
#1  0x000056335c6ec54c in LinuxAIOHandler::collect (this=this@entry=0x7f0a3ec83c90) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:1920
        events = 0x56335e9806d0
        timeout = {tv_sec = 0, tv_nsec = 500000000}
        ret = 0
        io_ctx = 0x7f0ae4c58000
        start_pos = 768
        end_pos = 1024
#2  0x000056335c6ecb22 in LinuxAIOHandler::poll (this=this@entry=0x7f0a3ec83c90, m1=m1@entry=0x7f0a3ec83d30, m2=m2@entry=0x7f0a3ec83d40, request=request@entry=0x7f0a3ec83d50) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:2065
        n_pending = 0
        err = <optimized out>
#3  0x000056335c6f35d7 in os_aio_linux_handler (request=0x7f0a3ec83d50, m2=0x7f0a3ec83d40, m1=0x7f0a3ec83d30, global_segment=9) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:2119
No locals.
#4  os_aio_handler (segment=segment@entry=9, m1=m1@entry=0x7f0a3ec83d30, m2=m2@entry=0x7f0a3ec83d40, request=request@entry=0x7f0a3ec83d50) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:5672
No locals.
#5  0x000056335c87a5de in fil_aio_wait (segment=segment@entry=9) at /home/buildbot/buildbot/build/storage/innobase/fil/fil0fil.cc:4473
        node = <optimized out>
        type = {m_bpage = 0x0, m_fil_node = 0x0, m_type = 1}
        message = <optimized out>
        err = <optimized out>
        space_id = <optimized out>
        purpose = <optimized out>
#6  0x000056335c785568 in io_handler_thread (arg=<optimized out>) at /home/buildbot/buildbot/build/storage/innobase/srv/srv0start.cc:327
        segment = 9
        start = <optimized out>
#7  0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#8  0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 12 (Thread 0x7f0a40c88700 (LWP 6150)):
#0  0x00007f0ae49de64a in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
No symbol table info available.
#1  0x000056335c6ec54c in LinuxAIOHandler::collect (this=this@entry=0x7f0a40c87c90) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:1920
        events = 0x56335e91ff90
        timeout = {tv_sec = 0, tv_nsec = 500000000}
        ret = 0
        io_ctx = 0x7f0ae4c76000
        start_pos = 768
        end_pos = 1024
#2  0x000056335c6ecb22 in LinuxAIOHandler::poll (this=this@entry=0x7f0a40c87c90, m1=m1@entry=0x7f0a40c87d30, m2=m2@entry=0x7f0a40c87d40, request=request@entry=0x7f0a40c87d50) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:2065
        n_pending = 0
        err = <optimized out>
#3  0x000056335c6f35d7 in os_aio_linux_handler (request=0x7f0a40c87d50, m2=0x7f0a40c87d40, m1=0x7f0a40c87d30, global_segment=5) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:2119
No locals.
#4  os_aio_handler (segment=segment@entry=5, m1=m1@entry=0x7f0a40c87d30, m2=m2@entry=0x7f0a40c87d40, request=request@entry=0x7f0a40c87d50) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:5672
No locals.
#5  0x000056335c87a5de in fil_aio_wait (segment=segment@entry=5) at /home/buildbot/buildbot/build/storage/innobase/fil/fil0fil.cc:4473
        node = <optimized out>
        type = {m_bpage = 0x0, m_fil_node = 0x0, m_type = 1}
        message = <optimized out>
        err = <optimized out>
        space_id = <optimized out>
        purpose = <optimized out>
#6  0x000056335c785568 in io_handler_thread (arg=<optimized out>) at /home/buildbot/buildbot/build/storage/innobase/srv/srv0start.cc:327
        segment = 5
        start = <optimized out>
#7  0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#8  0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 11 (Thread 0x7f0a3f485700 (LWP 6153)):
#0  0x00007f0ae49de64a in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
No symbol table info available.
#1  0x000056335c6ec54c in LinuxAIOHandler::collect (this=this@entry=0x7f0a3f484c90) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:1920
        events = 0x56335e97e6d0
        timeout = {tv_sec = 0, tv_nsec = 500000000}
        ret = 0
        io_ctx = 0x7f0ae4c5d000
        start_pos = 512
        end_pos = 768
#2  0x000056335c6ecb22 in LinuxAIOHandler::poll (this=this@entry=0x7f0a3f484c90, m1=m1@entry=0x7f0a3f484d30, m2=m2@entry=0x7f0a3f484d40, request=request@entry=0x7f0a3f484d50) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:2065
        n_pending = 0
        err = <optimized out>
#3  0x000056335c6f35d7 in os_aio_linux_handler (request=0x7f0a3f484d50, m2=0x7f0a3f484d40, m1=0x7f0a3f484d30, global_segment=8) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:2119
No locals.
#4  os_aio_handler (segment=segment@entry=8, m1=m1@entry=0x7f0a3f484d30, m2=m2@entry=0x7f0a3f484d40, request=request@entry=0x7f0a3f484d50) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:5672
No locals.
#5  0x000056335c87a5de in fil_aio_wait (segment=segment@entry=8) at /home/buildbot/buildbot/build/storage/innobase/fil/fil0fil.cc:4473
        node = <optimized out>
        type = {m_bpage = 0x0, m_fil_node = 0x0, m_type = 1}
        message = <optimized out>
        err = <optimized out>
        space_id = <optimized out>
        purpose = <optimized out>
#6  0x000056335c785568 in io_handler_thread (arg=<optimized out>) at /home/buildbot/buildbot/build/storage/innobase/srv/srv0start.cc:327
        segment = 8
        start = <optimized out>
#7  0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#8  0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 10 (Thread 0x7f0ae0bf5700 (LWP 6144)):
#0  0x00007f0ae3f7f709 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#1  0x000056335c922a06 in inline_mysql_cond_timedwait (abstime=0x7f0ae0bf4e10, mutex=0x56335dc8e520 <LOCK_checkpoint>, that=0x56335dc8e560 <COND_checkpoint>, src_file=<optimized out>, src_line=<optimized out>) at /home/buildbot/buildbot/build/include/mysql/psi/mysql_thread.h:1215
        result = <optimized out>
        src_line = 116
        src_file = 0x56335cc21738 "/home/buildbot/buildbot/build/storage/maria/ma_servicethread.c"
#2  my_service_thread_sleep (control=control@entry=0x56335d38a1c0 <checkpoint_control>, sleep_time=<optimized out>) at /home/buildbot/buildbot/build/storage/maria/ma_servicethread.c:115
        abstime = {tv_sec = 1546392241, tv_nsec = 64241000}
        res = 0 '\000'
#3  0x000056335c91b1c9 in ma_checkpoint_background (arg=0x1e) at /home/buildbot/buildbot/build/storage/maria/ma_checkpoint.c:707
        interval = 30
        sleeps = 450
        sleep_time = 30
        log_horizon_at_last_checkpoint = 4294975539
        pagecache_flushes_at_last_checkpoint = 0
        pages_bunch_size = 0
        filter_param = {up_to_lsn = 4294975495, max_pages = 0}
        dfile = 0x0
        kfile = 0x0
#4  0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#5  0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 9 (Thread 0x7f0a40487700 (LWP 6151)):
#0  0x00007f0ae49de64a in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
No symbol table info available.
#1  0x000056335c6ec54c in LinuxAIOHandler::collect (this=this@entry=0x7f0a40486c90) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:1920
        events = 0x56335e97a6d0
        timeout = {tv_sec = 0, tv_nsec = 500000000}
        ret = 1
        io_ctx = 0x7f0ae4c67000
        start_pos = 0
        end_pos = 256
#2  0x000056335c6ecb22 in LinuxAIOHandler::poll (this=this@entry=0x7f0a40486c90, m1=m1@entry=0x7f0a40486d30, m2=m2@entry=0x7f0a40486d40, request=request@entry=0x7f0a40486d50) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:2065
        n_pending = 0
        err = <optimized out>
#3  0x000056335c6f35d7 in os_aio_linux_handler (request=0x7f0a40486d50, m2=0x7f0a40486d40, m1=0x7f0a40486d30, global_segment=6) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:2119
No locals.
#4  os_aio_handler (segment=segment@entry=6, m1=m1@entry=0x7f0a40486d30, m2=m2@entry=0x7f0a40486d40, request=request@entry=0x7f0a40486d50) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:5672
No locals.
#5  0x000056335c87a5de in fil_aio_wait (segment=segment@entry=6) at /home/buildbot/buildbot/build/storage/innobase/fil/fil0fil.cc:4473
        node = <optimized out>
        type = {m_bpage = 0x0, m_fil_node = 0x0, m_type = 1}
        message = <optimized out>
        err = <optimized out>
        space_id = <optimized out>
        purpose = <optimized out>
#6  0x000056335c785568 in io_handler_thread (arg=<optimized out>) at /home/buildbot/buildbot/build/storage/innobase/srv/srv0start.cc:327
        segment = 6
        start = <optimized out>
#7  0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#8  0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 8 (Thread 0x7f0ae3306700 (LWP 6143)):
#0  0x00007f0ae3f7f709 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#1  0x000056335c9fc050 in inline_mysql_cond_timedwait (abstime=0x7f0ae3305e90, that=<optimized out>, mutex=<optimized out>, src_file=<optimized out>, src_line=<optimized out>) at /home/buildbot/buildbot/build/include/mysql/psi/mysql_thread.h:1215
        mutex = 0x56335dc97b40 <LOCK_timer>
        result = <optimized out>
        src_line = 292
        src_file = 0x56335cc2a908 "/home/buildbot/buildbot/build/mysys/thr_timer.c"
        that = 0x56335dc97b80 <COND_timer>
#2  timer_handler (arg=<optimized out>) at /home/buildbot/buildbot/build/mysys/thr_timer.c:292
        top_time = <optimized out>
        abstime = {tv_sec = 1546392236, tv_nsec = 229184000}
#3  0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#4  0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 7 (Thread 0x7f0a41489700 (LWP 6149)):
#0  0x00007f0ae49de64a in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
No symbol table info available.
#1  0x000056335c6ec54c in LinuxAIOHandler::collect (this=this@entry=0x7f0a41488c90) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:1920
        events = 0x56335e91df90
        timeout = {tv_sec = 0, tv_nsec = 500000000}
        ret = 0
        io_ctx = 0x7f0ae4df5000
        start_pos = 512
        end_pos = 768
#2  0x000056335c6ecb22 in LinuxAIOHandler::poll (this=this@entry=0x7f0a41488c90, m1=m1@entry=0x7f0a41488d30, m2=m2@entry=0x7f0a41488d40, request=request@entry=0x7f0a41488d50) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:2065
        n_pending = 0
        err = <optimized out>
#3  0x000056335c6f35d7 in os_aio_linux_handler (request=0x7f0a41488d50, m2=0x7f0a41488d40, m1=0x7f0a41488d30, global_segment=4) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:2119
No locals.
#4  os_aio_handler (segment=segment@entry=4, m1=m1@entry=0x7f0a41488d30, m2=m2@entry=0x7f0a41488d40, request=request@entry=0x7f0a41488d50) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:5672
No locals.
#5  0x000056335c87a5de in fil_aio_wait (segment=segment@entry=4) at /home/buildbot/buildbot/build/storage/innobase/fil/fil0fil.cc:4473
        node = <optimized out>
        type = {m_bpage = 0x0, m_fil_node = 0x0, m_type = 1}
        message = <optimized out>
        err = <optimized out>
        space_id = <optimized out>
        purpose = <optimized out>
#6  0x000056335c785568 in io_handler_thread (arg=<optimized out>) at /home/buildbot/buildbot/build/storage/innobase/srv/srv0start.cc:327
        segment = 4
        start = <optimized out>
#7  0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#8  0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 6 (Thread 0x7f0a41c8a700 (LWP 6148)):
#0  0x00007f0ae49de64a in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
No symbol table info available.
#1  0x000056335c6ec54c in LinuxAIOHandler::collect (this=this@entry=0x7f0a41c89c90) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:1920
        events = 0x56335e91bf90
        timeout = {tv_sec = 0, tv_nsec = 500000000}
        ret = 0
        io_ctx = 0x7f0ae4dfa000
        start_pos = 256
        end_pos = 512
#2  0x000056335c6ecb22 in LinuxAIOHandler::poll (this=this@entry=0x7f0a41c89c90, m1=m1@entry=0x7f0a41c89d30, m2=m2@entry=0x7f0a41c89d40, request=request@entry=0x7f0a41c89d50) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:2065
        n_pending = 0
        err = <optimized out>
#3  0x000056335c6f35d7 in os_aio_linux_handler (request=0x7f0a41c89d50, m2=0x7f0a41c89d40, m1=0x7f0a41c89d30, global_segment=3) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:2119
No locals.
#4  os_aio_handler (segment=segment@entry=3, m1=m1@entry=0x7f0a41c89d30, m2=m2@entry=0x7f0a41c89d40, request=request@entry=0x7f0a41c89d50) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:5672
No locals.
#5  0x000056335c87a5de in fil_aio_wait (segment=segment@entry=3) at /home/buildbot/buildbot/build/storage/innobase/fil/fil0fil.cc:4473
        node = <optimized out>
        type = {m_bpage = 0x0, m_fil_node = 0x0, m_type = 1}
        message = <optimized out>
        err = <optimized out>
        space_id = <optimized out>
        purpose = <optimized out>
#6  0x000056335c785568 in io_handler_thread (arg=<optimized out>) at /home/buildbot/buildbot/build/storage/innobase/srv/srv0start.cc:327
        segment = 3
        start = <optimized out>
#7  0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#8  0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 5 (Thread 0x7f0ae4dee740 (LWP 6142)):
#0  0x00007f0ae361874d in poll () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#1  0x000056335c27638a in handle_connections_sockets () at /home/buildbot/buildbot/build/sql/mysqld.cc:6725
        cAddr = {ss_family = 10, __ss_align = 0, __ss_padding = "\000\000\377\377\177\000\000\001\000\000\000\000\374\177\000\000\300\202@]3V\000\000\353\303F\016\374\177\000\000dK\000\000\000\000\000\000\025\373\253\\3V\000\000\000G?\340\n\177\000\000\270\313'\\3V\000\000бF\016\374\177\000\000U\367&\\3V\000\000\340\031A]3V\000\000FY\275\\3V\000\000\000\000\000\000\000\000\000\000\340\227@]3V\000"}
        flags = 2
        retval = <optimized out>
        fds = {{fd = 24, events = 1, revents = 0}, {fd = 25, events = 1, revents = 0}, {fd = 45, events = 0, revents = 0}}
        new_sock = {fd = 26, m_psi = 0x0}
        error_count = 0
        connect = <optimized out>
        is_unix_sock = <optimized out>
        socket_count = 2
        pfs_fds = {{fd = 24, m_psi = 0x0}, {fd = 25, m_psi = 0x0}, {fd = 1564504160, m_psi = 0x7f0ae3596d52 <_IO_file_fopen+546>}}
#2  0x000056335c27979f in mysqld_main (argc=21, argv=0x56335e783d10) at /home/buildbot/buildbot/build/sql/mysqld.cc:6194
        ho_error = <optimized out>
        new_thread_stack_size = <optimized out>
#3  0x00007f0ae353d830 in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#4  0x000056335c26d36d in _start ()
No symbol table info available.

Thread 4 (Thread 0x7f0a4248b700 (LWP 6147)):
#0  0x00007f0ae49de64a in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
No symbol table info available.
#1  0x000056335c6ec54c in LinuxAIOHandler::collect (this=this@entry=0x7f0a4248ac90) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:1920
        events = 0x56335e919f90
        timeout = {tv_sec = 0, tv_nsec = 500000000}
        ret = 0
        io_ctx = 0x7f0ae4dff000
        start_pos = 0
        end_pos = 256
#2  0x000056335c6ecb22 in LinuxAIOHandler::poll (this=this@entry=0x7f0a4248ac90, m1=m1@entry=0x7f0a4248ad30, m2=m2@entry=0x7f0a4248ad40, request=request@entry=0x7f0a4248ad50) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:2065
        n_pending = 0
        err = <optimized out>
#3  0x000056335c6f35d7 in os_aio_linux_handler (request=0x7f0a4248ad50, m2=0x7f0a4248ad40, m1=0x7f0a4248ad30, global_segment=2) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:2119
No locals.
#4  os_aio_handler (segment=segment@entry=2, m1=m1@entry=0x7f0a4248ad30, m2=m2@entry=0x7f0a4248ad40, request=request@entry=0x7f0a4248ad50) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:5672
No locals.
#5  0x000056335c87a5de in fil_aio_wait (segment=segment@entry=2) at /home/buildbot/buildbot/build/storage/innobase/fil/fil0fil.cc:4473
        node = <optimized out>
        type = {m_bpage = 0x0, m_fil_node = 0x0, m_type = 1}
        message = <optimized out>
        err = <optimized out>
        space_id = <optimized out>
        purpose = <optimized out>
#6  0x000056335c785568 in io_handler_thread (arg=<optimized out>) at /home/buildbot/buildbot/build/storage/innobase/srv/srv0start.cc:327
        segment = 2
        start = <optimized out>
#7  0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#8  0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 3 (Thread 0x7f0a42c8c700 (LWP 6146)):
#0  0x00007f0ae49de64a in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
No symbol table info available.
#1  0x000056335c6ec54c in LinuxAIOHandler::collect (this=this@entry=0x7f0a42c8bc90) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:1920
        events = 0x56335e940450
        timeout = {tv_sec = 0, tv_nsec = 500000000}
        ret = 0
        io_ctx = 0x7f0ae4c6c000
        start_pos = 0
        end_pos = 256
#2  0x000056335c6ecb22 in LinuxAIOHandler::poll (this=this@entry=0x7f0a42c8bc90, m1=m1@entry=0x7f0a42c8bd30, m2=m2@entry=0x7f0a42c8bd40, request=request@entry=0x7f0a42c8bd50) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:2065
        n_pending = 0
        err = <optimized out>
#3  0x000056335c6f35d7 in os_aio_linux_handler (request=0x7f0a42c8bd50, m2=0x7f0a42c8bd40, m1=0x7f0a42c8bd30, global_segment=1) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:2119
No locals.
#4  os_aio_handler (segment=segment@entry=1, m1=m1@entry=0x7f0a42c8bd30, m2=m2@entry=0x7f0a42c8bd40, request=request@entry=0x7f0a42c8bd50) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:5672
No locals.
#5  0x000056335c87a5de in fil_aio_wait (segment=segment@entry=1) at /home/buildbot/buildbot/build/storage/innobase/fil/fil0fil.cc:4473
        node = <optimized out>
        type = {m_bpage = 0x0, m_fil_node = 0x0, m_type = 1}
        message = <optimized out>
        err = <optimized out>
        space_id = <optimized out>
        purpose = <optimized out>
#6  0x000056335c785568 in io_handler_thread (arg=<optimized out>) at /home/buildbot/buildbot/build/storage/innobase/srv/srv0start.cc:327
        segment = 1
        start = <optimized out>
#7  0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#8  0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 2 (Thread 0x7f0a4348d700 (LWP 6145)):
#0  0x00007f0ae49de64a in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
No symbol table info available.
#1  0x000056335c6ec54c in LinuxAIOHandler::collect (this=this@entry=0x7f0a4348cc90) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:1920
        events = 0x56335e9301d0
        timeout = {tv_sec = 0, tv_nsec = 500000000}
        ret = 0
        io_ctx = 0x7f0ae4c71000
        start_pos = 0
        end_pos = 256
#2  0x000056335c6ecb22 in LinuxAIOHandler::poll (this=this@entry=0x7f0a4348cc90, m1=m1@entry=0x7f0a4348cd30, m2=m2@entry=0x7f0a4348cd40, request=request@entry=0x7f0a4348cd50) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:2065
        n_pending = 0
        err = <optimized out>
#3  0x000056335c6f35d7 in os_aio_linux_handler (request=0x7f0a4348cd50, m2=0x7f0a4348cd40, m1=0x7f0a4348cd30, global_segment=0) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:2119
No locals.
#4  os_aio_handler (segment=segment@entry=0, m1=m1@entry=0x7f0a4348cd30, m2=m2@entry=0x7f0a4348cd40, request=request@entry=0x7f0a4348cd50) at /home/buildbot/buildbot/build/storage/innobase/os/os0file.cc:5672
No locals.
#5  0x000056335c87a5de in fil_aio_wait (segment=segment@entry=0) at /home/buildbot/buildbot/build/storage/innobase/fil/fil0fil.cc:4473
        node = <optimized out>
        type = {m_bpage = 0x0, m_fil_node = 0x0, m_type = 1}
        message = <optimized out>
        err = <optimized out>
        space_id = <optimized out>
        purpose = <optimized out>
#6  0x000056335c785568 in io_handler_thread (arg=<optimized out>) at /home/buildbot/buildbot/build/storage/innobase/srv/srv0start.cc:327
        segment = 0
        start = <optimized out>
#7  0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#8  0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

Thread 1 (Thread 0x7f0a44578700 (LWP 6192)):
#0  0x00007f0ae3f8059f in pthread_kill () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#1  0x000056335c4e2a09 in handle_fatal_signal (sig=11) at /home/buildbot/buildbot/build/sql/signal_handler.cc:305
        buff = "/home/travis/logs/vardir/data/\000\000\000\000\000\000\377\377\377\377", '\000' <repeats 17 times>, ":23:49\t", '\000' <repeats 15 times>
        curr_time = 1546392230
        tm = {tm_sec = 50, tm_min = 23, tm_hour = 1, tm_mday = 2, tm_mon = 0, tm_year = 119, tm_wday = 3, tm_yday = 1, tm_isdst = 0, tm_gmtoff = 0, tm_zone = 0x56335e787320 "UTC"}
        thd = 0x7f0adc0f2d38
        print_invalid_query_pointer = false
#2  <signal handler called>
No symbol table info available.
#3  general_log_write (thd=thd@entry=0x7f0adc0f2d38, command=command@entry=COM_QUERY, query=0x7f0adc09f230 "DROP PROCEDURE IF EXISTS sp_grammar ; CREATE PROCEDURE IF NOT EXISTS sp_6191 () BEGIN UPDATE IGNORE `view_table1_innodb_int_autoinc` SET `col_char_latin1_default_null` = '' ORDER BY `col_set_latin1_de"..., query_length=251) at /home/buildbot/buildbot/build/sql/log.cc:6587
No locals.
#4  0x000056335c32ea7a in dispatch_command (command=command@entry=COM_QUERY, thd=thd@entry=0x7f0adc0f2d38, packet=0x7f0adc095249 "DROP PROCEDURE IF EXISTS sp_grammar ; CREATE PROCEDURE IF NOT EXISTS sp_6191 () BEGIN UPDATE IGNORE `view_table1_innodb_int_autoinc` SET `col_char_latin1_default_null` = '' ORDER BY `col_set_latin1_de"..., packet_length=packet_length@entry=252, is_com_multi=is_com_multi@entry=false, is_next_command=is_next_command@entry=false) at /home/buildbot/buildbot/build/sql/sql_parse.cc:1834
        packet_end = 0x7f0adc09f32b ""
        parser_state = {m_input = {m_compute_digest = false}, m_lip = {lookahead_token = 0, lookahead_yylval = 0x56335d391320 <my_charset_bin>, m_thd = 0x7f0adc0f2d38, m_ptr = 0x7f0adc09f2be "char_latin1_default_null` = '' ORDER BY `col_set_latin1_default_null` LIMIT 1 ; END /* QNO 18796 CON_ID 20 */", m_tok_start = 0x7f0adc09f2be "char_latin1_default_null` = '' ORDER BY `col_set_latin1_default_null` LIMIT 1 ; END /* QNO 18796 CON_ID 20 */", m_tok_end = 0x7f0adc09f2be "char_latin1_default_null` = '' ORDER BY `col_set_latin1_default_null` LIMIT 1 ; END /* QNO 18796 CON_ID 20 */", m_end_of_query = 0x7f0adc09f2bd "_char_latin1_default_null` = '' ORDER BY `col_set_latin1_default_null` LIMIT 1 ; END /* QNO 18796 CON_ID 20 */", m_tok_start_prev = 0x7f0adc09f2bd "_char_latin1_default_null` = '' ORDER BY `col_set_latin1_default_null` LIMIT 1 ; END /* QNO 18796 CON_ID 20 */", m_buf = 0x7f0adc09f230 "DROP PROCEDURE IF EXISTS sp_grammar ; CREATE PROCEDURE IF NOT EXISTS sp_6191 () BEGIN UPDATE IGNORE `view_table1_innodb_int_autoinc` SET `col_char_latin1_default_null` = '' ORDER BY `col_set_latin1_de"..., m_buf_length = 141, m_echo = true, m_echo_saved = true, m_cpp_buf = 0x7f0adc09f320 "ON_ID 20 */", m_cpp_ptr = 0x7f0adc09f3ad "", m_cpp_tok_start = 0x7f0adc09f3ad "", m_cpp_tok_start_prev = 0x7f0adc09f3ad "", m_cpp_tok_end = 0x7f0adc09f3ad "", m_body_utf8 = 0x0, m_body_utf8_ptr = 0x7f0adc45cf5d " \200", m_cpp_utf8_processed_ptr = 0x0, next_state = MY_LEX_END, found_semicolon = 0x0, ignore_space = false, stmt_prepare_mode = false, multi_statements = true, yylineno = 1, m_digest = 0x0, in_comment = NO_COMMENT, in_comment_saved = NO_COMMENT, m_cpp_text_start = 0x7f0adc09f392 "1 /* QNO 18795 CON_ID 20 */", m_cpp_text_end = 0x7f0adc09f393 " /* QNO 18795 CON_ID 20 */", m_underscore_cs = 0x0}, m_yacc = {yacc_yyss = 0x0, yacc_yyvs = 0x0, m_set_signal_info = {m_item = {0x0 <repeats 12 times>}}, m_lock_type = TL_READ_DEFAULT, m_mdl_type = MDL_SHARED_READ}, m_digest_psi = 0x0}
        net = 0x7f0adc0f2f98
        error = false
        do_end_of_statement = true
        drop_more_results = false
#5  0x000056335c32ff1e in do_command (thd=0x7f0adc0f2d38) at /home/buildbot/buildbot/build/sql/sql_parse.cc:1396
        return_value = <optimized out>
        packet = <optimized out>
        packet_length = 253
        net = 0x7f0adc0f2f98
        command = COM_QUERY
#6  0x000056335c3f780f in do_handle_one_connection (connect=connect@entry=0x563362242c18) at /home/buildbot/buildbot/build/sql/sql_connect.cc:1402
        create_user = true
        thr_create_utime = <optimized out>
        thd = 0x7f0adc0f2d38
#7  0x000056335c3f7934 in handle_one_connection (arg=0x563362242c18) at /home/buildbot/buildbot/build/sql/sql_connect.cc:1308
        connect = 0x563362242c18
#8  0x00007f0ae3f796ba in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#9  0x00007f0ae362441d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.