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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  0x00007fb846957611 in pthread_kill () from /lib/x86_64-linux-gnu/libpthread.so.0

Thread 38 (Thread 0x7fb84415d700 (LWP 23475)):
#0  0x00007fb846956404 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00005572cee72fdb in inline_mysql_cond_wait (src_file=0x5572cf5f87a8 "/home/travis/src/sql/slave.cc", src_line=513, mutex=<optimized out>, that=<optimized out>) at /home/travis/src/include/mysql/psi/mysql_thread.h:1178
#2  handle_slave_background (arg=<optimized out>) at /home/travis/src/sql/slave.cc:513
#3  0x00007fb846952184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#4  0x00007fb845e5effd in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 37 (Thread 0x7fb848035780 (LWP 23445)):
#0  0x00007fb845e51c5d in poll () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00005572cee5d4bb in poll (__timeout=-1, __nfds=2, __fds=0x7fff852f42b0) at /usr/include/x86_64-linux-gnu/bits/poll2.h:41
#2  handle_connections_sockets () at /home/travis/src/sql/mysqld.cc:6710
#3  0x00005572cee60630 in mysqld_main (argc=20, argv=0x5572d12059e0) at /home/travis/src/sql/mysqld.cc:6179
#4  0x00007fb845d82f45 in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
#5  0x00005572cee543e8 in _start ()

Thread 36 (Thread 0x7fb8441a7700 (LWP 23474)):
#0  0x00007fb84695a0c1 in sigwait () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00005572cee56963 in signal_hand (arg=<optimized out>) at /home/travis/src/sql/mysqld.cc:3553
#2  0x00007fb846952184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#3  0x00007fb845e5effd in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 35 (Thread 0x7fb830213700 (LWP 23493)):
#0  0x00007fb8469567be in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00005572cee5871c in inline_mysql_cond_timedwait (src_file=0x5572cf5eed28 "/home/travis/src/sql/mysqld.cc", src_line=3003, abstime=0x7fb830212e00, mutex=0x5572cff14960 <LOCK_thread_cache>, that=0x5572cff17120 <COND_thread_cache>) at /home/travis/src/include/mysql/psi/mysql_thread.h:1215
#2  cache_thread (thd=0x7fb7f80094f8) at /home/travis/src/sql/mysqld.cc:3002
#3  one_thread_per_connection_end (thd=0x7fb7f80094f8, put_in_cache=<optimized out>) at /home/travis/src/sql/mysqld.cc:3089
#4  0x00005572cefd54af in do_handle_one_connection (connect=connect@entry=0x5572d1bac5a8) at /home/travis/src/sql/sql_connect.cc:1421
#5  0x00005572cefd5644 in handle_one_connection (arg=0x5572d1bac5a8) at /home/travis/src/sql/sql_connect.cc:1308
#6  0x00007fb846952184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#7  0x00007fb845e5effd in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 34 (Thread 0x7fb80cff9700 (LWP 23473)):
#0  0x00007fb846956404 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00005572cf2368fb in inline_mysql_cond_wait (src_file=0x5572cf701f98 "/home/travis/src/storage/innobase/handler/ha_innodb.cc", src_line=311, mutex=0x7fb80cff8e30, that=0x7fb80cff8e60) at /home/travis/src/include/mysql/psi/mysql_thread.h:1178
#2  thd_destructor_proxy () at /home/travis/src/storage/innobase/handler/ha_innodb.cc:311
#3  0x00007fb846952184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#4  0x00007fb845e5effd in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 33 (Thread 0x7fb83025d700 (LWP 23492)):
#0  0x00007fb8469567be in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00005572cefdb1c8 in inline_mysql_cond_timedwait (src_file=0x5572cf610a20 "/home/travis/src/sql/mdl.cc", src_line=1094, abstime=0x7fb830259350, mutex=0x7fb7fc0095d8, that=0x7fb7fc009608) at /home/travis/src/include/mysql/psi/mysql_thread.h:1215
#2  MDL_wait::timed_wait (this=this@entry=0x7fb7fc0095d8, owner=0x7fb7fc009588, abs_timeout=abs_timeout@entry=0x7fb830259350, set_status_on_timeout=set_status_on_timeout@entry=false, wait_state_name=<optimized out>) at /home/travis/src/sql/mdl.cc:1094
#3  0x00005572cefdc589 in MDL_context::acquire_lock (this=this@entry=0x7fb7fc0095d8, mdl_request=mdl_request@entry=0x7fb8302593f0, lock_wait_timeout=<optimized out>) at /home/travis/src/sql/mdl.cc:2148
#4  0x00005572ceeadbab in open_table_get_mdl_lock (thd=thd@entry=0x7fb7fc0094b8, ot_ctx=ot_ctx@entry=0x7fb830259c80, mdl_request=0x7fb8302593f0, mdl_request@entry=0x7fb7fc01a670, flags=flags@entry=1024, mdl_ticket=mdl_ticket@entry=0x7fb830259638) at /home/travis/src/sql/sql_base.cc:1474
#5  0x00005572ceeb18a2 in open_table (thd=thd@entry=0x7fb7fc0094b8, table_list=table_list@entry=0x7fb7fc01a218, ot_ctx=ot_ctx@entry=0x7fb830259c80) at /home/travis/src/sql/sql_base.cc:1767
#6  0x00005572ceeb4703 in open_and_process_table (ot_ctx=0x7fb830259c80, has_prelocking_list=false, prelocking_strategy=0x7fb830259d30, flags=1024, counter=0x7fb830259d2c, tables=0x7fb7fc01a218, lex=0x7fb7fc00d0d8, thd=0x7fb7fc0094b8) at /home/travis/src/sql/sql_base.cc:3548
#7  open_tables (thd=thd@entry=0x7fb7fc0094b8, options=..., start=start@entry=0x7fb830259d18, counter=counter@entry=0x7fb830259d2c, flags=flags@entry=1024, prelocking_strategy=prelocking_strategy@entry=0x7fb830259d30) at /home/travis/src/sql/sql_base.cc:4068
#8  0x00005572cef6397c in open_tables (flags=1024, counter=0x7fb830259d2c, tables=0x7fb830259d18, thd=0x7fb7fc0094b8) at /home/travis/src/sql/sql_base.h:466
#9  mysqld_show_create_get_fields (thd=thd@entry=0x7fb7fc0094b8, table_list=table_list@entry=0x7fb7fc01a218, field_list=field_list@entry=0x7fb830259fd0, buffer=buffer@entry=0x7fb830259ff0) at /home/travis/src/sql/sql_show.cc:1261
#10 0x00005572cef64268 in mysqld_show_create (thd=thd@entry=0x7fb7fc0094b8, table_list=table_list@entry=0x7fb7fc01a218) at /home/travis/src/sql/sql_show.cc:1366
#11 0x00005572cef085f0 in mysql_execute_command (thd=thd@entry=0x7fb7fc0094b8) at /home/travis/src/sql/sql_parse.cc:4528
#12 0x00005572cef0d9f1 in mysql_parse (thd=0x7fb7fc0094b8, rawbuf=<optimized out>, length=51, parser_state=0x7fb83025c650, is_com_multi=<optimized out>, is_next_command=<optimized out>) at /home/travis/src/sql/sql_parse.cc:8073
#13 0x00005572cef1039b in dispatch_command (command=command@entry=COM_QUERY, thd=thd@entry=0x7fb7fc0094b8, packet=packet@entry=0x7fb7fc011e09 "SHOW CREATE SEQUENCE seq1 /* QNO 62734 CON_ID 19 */ ", packet_length=packet_length@entry=52, is_com_multi=is_com_multi@entry=false, is_next_command=is_next_command@entry=false) at /home/travis/src/sql/sql_parse.cc:1847
#14 0x00005572cef111ce in do_command (thd=0x7fb7fc0094b8) at /home/travis/src/sql/sql_parse.cc:1392
#15 0x00005572cefd552c in do_handle_one_connection (connect=connect@entry=0x5572d1bac5a8) at /home/travis/src/sql/sql_connect.cc:1402
#16 0x00005572cefd5644 in handle_one_connection (arg=0x5572d1bac5a8) at /home/travis/src/sql/sql_connect.cc:1308
#17 0x00007fb846952184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#18 0x00007fb845e5effd in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 32 (Thread 0x7fb80dffb700 (LWP 23471)):
#0  0x00007fb846959b9d in nanosleep () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00005572cf2aa53c in os_thread_sleep (tm=tm@entry=1000000) at /home/travis/src/storage/innobase/os/os0thread.cc:230
#2  0x00005572cf3a8b0a in btr_defragment_thread () at /home/travis/src/storage/innobase/btr/btr0defragment.cc:717
#3  0x00007fb846952184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#4  0x00007fb845e5effd in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 31 (Thread 0x7fb8302a7700 (LWP 23490)):
#0  0x00007fb8469567be in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00005572cefdb1c8 in inline_mysql_cond_timedwait (src_file=0x5572cf610a20 "/home/travis/src/sql/mdl.cc", src_line=1094, abstime=0x7fb8302a4b50, mutex=0x7fb7f00094f8, that=0x7fb7f0009528) at /home/travis/src/include/mysql/psi/mysql_thread.h:1215
#2  MDL_wait::timed_wait (this=this@entry=0x7fb7f00094f8, owner=0x7fb7f00094a8, abs_timeout=abs_timeout@entry=0x7fb8302a4b50, set_status_on_timeout=set_status_on_timeout@entry=false, wait_state_name=<optimized out>) at /home/travis/src/sql/mdl.cc:1094
#3  0x00005572cefdc589 in MDL_context::acquire_lock (this=this@entry=0x7fb7f00094f8, mdl_request=0x7fb7f001dbc8, lock_wait_timeout=lock_wait_timeout@entry=10) at /home/travis/src/sql/mdl.cc:2148
#4  0x00005572cefdcdae in MDL_context::acquire_locks (this=this@entry=0x7fb7f00094f8, mdl_requests=mdl_requests@entry=0x7fb8302a4c50, lock_wait_timeout=10) at /home/travis/src/sql/mdl.cc:2268
#5  0x00005572ceeb2ac9 in lock_table_names (thd=thd@entry=0x7fb7f00093d8, options=..., tables_start=tables_start@entry=0x7fb7f001b6f8, tables_end=tables_end@entry=0x0, lock_wait_timeout=10, flags=flags@entry=0) at /home/travis/src/sql/sql_base.cc:3817
#6  0x00005572cef2091f in lock_table_names (flags=0, lock_wait_timeout=<optimized out>, table_list_end=0x0, table_list=0x7fb7f001b6f8, thd=0x7fb7f00093d8) at /home/travis/src/sql/sql_base.h:236
#7  mysql_rename_tables (thd=thd@entry=0x7fb7f00093d8, table_list=table_list@entry=0x7fb7f001b6f8, silent=silent@entry=false) at /home/travis/src/sql/sql_rename.cc:145
#8  0x00005572cef0a333 in mysql_execute_command (thd=thd@entry=0x7fb7f00093d8) at /home/travis/src/sql/sql_parse.cc:4444
#9  0x00005572cef0d9f1 in mysql_parse (thd=0x7fb7f00093d8, rawbuf=<optimized out>, length=79, parser_state=0x7fb8302a6650, is_com_multi=<optimized out>, is_next_command=<optimized out>) at /home/travis/src/sql/sql_parse.cc:8073
#10 0x00005572cef1039b in dispatch_command (command=command@entry=COM_QUERY, thd=thd@entry=0x7fb7f00093d8, packet=packet@entry=0x7fb7f0013529 "RENAME TABLE seq6 TO seq4, seq7 TO seq7, seq2 TO seq1 /* QNO 63208 CON_ID 18 */ ", packet_length=packet_length@entry=80, is_com_multi=is_com_multi@entry=false, is_next_command=is_next_command@entry=false) at /home/travis/src/sql/sql_parse.cc:1847
#11 0x00005572cef111ce in do_command (thd=0x7fb7f00093d8) at /home/travis/src/sql/sql_parse.cc:1392
#12 0x00005572cefd552c in do_handle_one_connection (connect=connect@entry=0x5572d1bac5a8) at /home/travis/src/sql/sql_connect.cc:1402
#13 0x00005572cefd5644 in handle_one_connection (arg=0x5572d1bac5a8) at /home/travis/src/sql/sql_connect.cc:1308
#14 0x00007fb846952184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#15 0x00007fb845e5effd in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 30 (Thread 0x7fb80e7fc700 (LWP 23470)):
#0  0x00007fb846956404 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00005572cf2a9fb1 in wait (this=0x5572d13579b0) at /home/travis/src/storage/innobase/os/os0event.cc:163
#2  os_event::wait_low (this=0x5572d13579b0, reset_sig_count=1, reset_sig_count@entry=0) at /home/travis/src/storage/innobase/os/os0event.cc:333
#3  0x00005572cf2aa375 in os_event_wait_low (event=<optimized out>, reset_sig_count=reset_sig_count@entry=0) at /home/travis/src/storage/innobase/os/os0event.cc:522
#4  0x00005572cf3bd3be in buf_dump_thread () at /home/travis/src/storage/innobase/buf/buf0dump.cc:837
#5  0x00007fb846952184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#6  0x00007fb845e5effd in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 29 (Thread 0x7fb83033b700 (LWP 23486)):
#0  0x00007fb8469567be in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00005572cefdb1c8 in inline_mysql_cond_timedwait (src_file=0x5572cf610a20 "/home/travis/src/sql/mdl.cc", src_line=1094, abstime=0x7fb830338030, mutex=0x7fb7ec009548, that=0x7fb7ec009578) at /home/travis/src/include/mysql/psi/mysql_thread.h:1215
#2  MDL_wait::timed_wait (this=this@entry=0x7fb7ec009548, owner=0x7fb7ec0094f8, abs_timeout=abs_timeout@entry=0x7fb830338030, set_status_on_timeout=set_status_on_timeout@entry=false, wait_state_name=<optimized out>) at /home/travis/src/sql/mdl.cc:1094
#3  0x00005572cefdc589 in MDL_context::acquire_lock (this=this@entry=0x7fb7ec009548, mdl_request=mdl_request@entry=0x7fb7ec01a5d8, lock_wait_timeout=<optimized out>) at /home/travis/src/sql/mdl.cc:2148
#4  0x00005572ceeadbab in open_table_get_mdl_lock (thd=thd@entry=0x7fb7ec009428, ot_ctx=ot_ctx@entry=0x7fb830338960, mdl_request=mdl_request@entry=0x7fb7ec01a5d8, flags=flags@entry=0, mdl_ticket=mdl_ticket@entry=0x7fb830338318) at /home/travis/src/sql/sql_base.cc:1474
#5  0x00005572ceeb18a2 in open_table (thd=thd@entry=0x7fb7ec009428, table_list=table_list@entry=0x7fb7ec01a180, ot_ctx=ot_ctx@entry=0x7fb830338960) at /home/travis/src/sql/sql_base.cc:1767
#6  0x00005572ceeb4703 in open_and_process_table (ot_ctx=0x7fb830338960, has_prelocking_list=false, prelocking_strategy=0x7fb830338a40, flags=0, counter=0x7fb8303389fc, tables=0x7fb7ec01a180, lex=0x7fb7ec00d048, thd=0x7fb7ec009428) at /home/travis/src/sql/sql_base.cc:3548
#7  open_tables (thd=thd@entry=0x7fb7ec009428, options=..., start=start@entry=0x7fb8303389e8, counter=counter@entry=0x7fb8303389fc, flags=flags@entry=0, prelocking_strategy=prelocking_strategy@entry=0x7fb830338a40) at /home/travis/src/sql/sql_base.cc:4068
#8  0x00005572ceeb4c2d in open_and_lock_tables (thd=thd@entry=0x7fb7ec009428, options=..., tables=tables@entry=0x7fb7ec01a180, derived=derived@entry=true, flags=flags@entry=0, prelocking_strategy=prelocking_strategy@entry=0x7fb830338a40) at /home/travis/src/sql/sql_base.cc:4943
#9  0x00005572cee262ef in open_and_lock_tables (flags=0, derived=true, tables=0x7fb7ec01a180, thd=0x7fb7ec009428) at /home/travis/src/sql/sql_base.h:497
#10 execute_sqlcom_select (thd=thd@entry=0x7fb7ec009428, all_tables=0x7fb7ec01a180) at /home/travis/src/sql/sql_parse.cc:6463
#11 0x00005572cef0b22d in mysql_execute_command (thd=thd@entry=0x7fb7ec009428) at /home/travis/src/sql/sql_parse.cc:3765
#12 0x00005572cef0d9f1 in mysql_parse (thd=0x7fb7ec009428, rawbuf=<optimized out>, length=48, parser_state=0x7fb83033a650, is_com_multi=<optimized out>, is_next_command=<optimized out>) at /home/travis/src/sql/sql_parse.cc:8073
#13 0x00005572cef1039b in dispatch_command (command=command@entry=COM_QUERY, thd=thd@entry=0x7fb7ec009428, packet=packet@entry=0x7fb7ec011d79 "SELECT NEXTVAL( seq1 ) /* QNO 62485 CON_ID 16 */ ", packet_length=packet_length@entry=49, is_com_multi=is_com_multi@entry=false, is_next_command=is_next_command@entry=false) at /home/travis/src/sql/sql_parse.cc:1847
#14 0x00005572cef111ce in do_command (thd=0x7fb7ec009428) at /home/travis/src/sql/sql_parse.cc:1392
#15 0x00005572cefd552c in do_handle_one_connection (connect=connect@entry=0x5572d1baeb38) at /home/travis/src/sql/sql_connect.cc:1402
#16 0x00005572cefd5644 in handle_one_connection (arg=0x5572d1baeb38) at /home/travis/src/sql/sql_connect.cc:1308
#17 0x00007fb846952184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#18 0x00007fb845e5effd in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 28 (Thread 0x7fb8157fa700 (LWP 23466)):
#0  0x00007fb846956404 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00005572cf2a9fb1 in wait (this=0x5572d13576b0) at /home/travis/src/storage/innobase/os/os0event.cc:163
#2  os_event::wait_low (this=0x5572d13576b0, reset_sig_count=reset_sig_count@entry=7112) at /home/travis/src/storage/innobase/os/os0event.cc:333
#3  0x00005572cf2aa375 in os_event_wait_low (event=<optimized out>, reset_sig_count=reset_sig_count@entry=7112) at /home/travis/src/storage/innobase/os/os0event.cc:522
#4  0x00005572cf32b263 in srv_resume_thread (slot=slot@entry=0x5572cfe92e40 <srv_sys+192>, sig_count=sig_count@entry=7112, wait=<optimized out>, timeout_usec=<optimized out>) at /home/travis/src/storage/innobase/srv/srv0srv.cc:915
#5  0x00005572cf330709 in srv_purge_coordinator_suspend (rseg_history_len=<optimized out>, slot=0x5572cfe92e40 <srv_sys+192>) at /home/travis/src/storage/innobase/srv/srv0srv.cc:2628
#6  srv_purge_coordinator_thread (arg=<optimized out>) at /home/travis/src/storage/innobase/srv/srv0srv.cc:2703
#7  0x00007fb846952184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#8  0x00007fb845e5effd in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 27 (Thread 0x7fb84407f700 (LWP 23484)):
#0  0x00007fb8469567be in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00005572cefdb1c8 in inline_mysql_cond_timedwait (src_file=0x5572cf610a20 "/home/travis/src/sql/mdl.cc", src_line=1094, abstime=0x7fb84407c030, mutex=0x7fb7e00011c8, that=0x7fb7e00011f8) at /home/travis/src/include/mysql/psi/mysql_thread.h:1215
#2  MDL_wait::timed_wait (this=this@entry=0x7fb7e00011c8, owner=0x7fb7e0001178, abs_timeout=abs_timeout@entry=0x7fb84407c030, set_status_on_timeout=set_status_on_timeout@entry=false, wait_state_name=<optimized out>) at /home/travis/src/sql/mdl.cc:1094
#3  0x00005572cefdc589 in MDL_context::acquire_lock (this=this@entry=0x7fb7e00011c8, mdl_request=mdl_request@entry=0x7fb7e0012280, lock_wait_timeout=<optimized out>) at /home/travis/src/sql/mdl.cc:2148
#4  0x00005572ceeadbab in open_table_get_mdl_lock (thd=thd@entry=0x7fb7e00010a8, ot_ctx=ot_ctx@entry=0x7fb84407c960, mdl_request=mdl_request@entry=0x7fb7e0012280, flags=flags@entry=0, mdl_ticket=mdl_ticket@entry=0x7fb84407c318) at /home/travis/src/sql/sql_base.cc:1474
#5  0x00005572ceeb18a2 in open_table (thd=thd@entry=0x7fb7e00010a8, table_list=table_list@entry=0x7fb7e0011e28, ot_ctx=ot_ctx@entry=0x7fb84407c960) at /home/travis/src/sql/sql_base.cc:1767
#6  0x00005572ceeb4703 in open_and_process_table (ot_ctx=0x7fb84407c960, has_prelocking_list=false, prelocking_strategy=0x7fb84407ca40, flags=0, counter=0x7fb84407c9fc, tables=0x7fb7e0011e28, lex=0x7fb7e0004cc8, thd=0x7fb7e00010a8) at /home/travis/src/sql/sql_base.cc:3548
#7  open_tables (thd=thd@entry=0x7fb7e00010a8, options=..., start=start@entry=0x7fb84407c9e8, counter=counter@entry=0x7fb84407c9fc, flags=flags@entry=0, prelocking_strategy=prelocking_strategy@entry=0x7fb84407ca40) at /home/travis/src/sql/sql_base.cc:4068
#8  0x00005572ceeb4c2d in open_and_lock_tables (thd=thd@entry=0x7fb7e00010a8, options=..., tables=tables@entry=0x7fb7e0011e28, derived=derived@entry=true, flags=flags@entry=0, prelocking_strategy=prelocking_strategy@entry=0x7fb84407ca40) at /home/travis/src/sql/sql_base.cc:4943
#9  0x00005572cee262ef in open_and_lock_tables (flags=0, derived=true, tables=0x7fb7e0011e28, thd=0x7fb7e00010a8) at /home/travis/src/sql/sql_base.h:497
#10 execute_sqlcom_select (thd=thd@entry=0x7fb7e00010a8, all_tables=0x7fb7e0011e28) at /home/travis/src/sql/sql_parse.cc:6463
#11 0x00005572cef0b22d in mysql_execute_command (thd=thd@entry=0x7fb7e00010a8) at /home/travis/src/sql/sql_parse.cc:3765
#12 0x00005572cef0d9f1 in mysql_parse (thd=0x7fb7e00010a8, rawbuf=<optimized out>, length=48, parser_state=0x7fb84407e650, is_com_multi=<optimized out>, is_next_command=<optimized out>) at /home/travis/src/sql/sql_parse.cc:8073
#13 0x00005572cef1039b in dispatch_command (command=command@entry=COM_QUERY, thd=thd@entry=0x7fb7e00010a8, packet=packet@entry=0x7fb7e0009a19 "SELECT SETVAL(seq1, 0) /* QNO 61593 CON_ID 15 */ ", packet_length=packet_length@entry=49, is_com_multi=is_com_multi@entry=false, is_next_command=is_next_command@entry=false) at /home/travis/src/sql/sql_parse.cc:1847
#14 0x00005572cef111ce in do_command (thd=0x7fb7e00010a8) at /home/travis/src/sql/sql_parse.cc:1392
#15 0x00005572cefd552c in do_handle_one_connection (connect=connect@entry=0x5572d1baeb38) at /home/travis/src/sql/sql_connect.cc:1402
#16 0x00005572cefd5644 in handle_one_connection (arg=0x5572d1baeb38) at /home/travis/src/sql/sql_connect.cc:1308
#17 0x00007fb846952184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#18 0x00007fb845e5effd in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 26 (Thread 0x7fb815ffb700 (LWP 23464)):
#0  0x00007fb8469567be in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00005572cf2a9e8e in os_event::timed_wait (this=this@entry=0x5572d1b52570, abstime=abstime@entry=0x7fb815ffac20) at /home/travis/src/storage/innobase/os/os0event.cc:283
#2  0x00005572cf2aa0b1 in os_event::wait_time_low (this=0x5572d1b52570, time_in_usec=time_in_usec@entry=5000000, reset_sig_count=reset_sig_count@entry=1) at /home/travis/src/storage/innobase/os/os0event.cc:405
#3  0x00005572cf2aa365 in os_event_wait_time_low (event=<optimized out>, time_in_usec=time_in_usec@entry=5000000, reset_sig_count=reset_sig_count@entry=1) at /home/travis/src/storage/innobase/os/os0event.cc:505
#4  0x00005572cf375040 in ib_wqueue_timedwait (wq=wq@entry=0x5572d1b525f0, wait_in_usecs=wait_in_usecs@entry=5000000) at /home/travis/src/storage/innobase/ut/ut0wqueue.cc:163
#5  0x00005572cf445bf8 in fts_optimize_thread (arg=0x5572d1b525f0) at /home/travis/src/storage/innobase/fts/fts0opt.cc:3035
#6  0x00007fb846952184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#7  0x00007fb845e5effd in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 25 (Thread 0x7fb8440c9700 (LWP 23478)):
#0  0x00007fb8469567be in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00005572cefdb1c8 in inline_mysql_cond_timedwait (src_file=0x5572cf610a20 "/home/travis/src/sql/mdl.cc", src_line=1094, abstime=0x7fb8440c5350, mutex=0x7fb7e4017488, that=0x7fb7e40174b8) at /home/travis/src/include/mysql/psi/mysql_thread.h:1215
#2  MDL_wait::timed_wait (this=this@entry=0x7fb7e4017488, owner=0x7fb7e4017438, abs_timeout=abs_timeout@entry=0x7fb8440c5350, set_status_on_timeout=set_status_on_timeout@entry=false, wait_state_name=<optimized out>) at /home/travis/src/sql/mdl.cc:1094
#3  0x00005572cefdc589 in MDL_context::acquire_lock (this=this@entry=0x7fb7e4017488, mdl_request=mdl_request@entry=0x7fb8440c53f0, lock_wait_timeout=<optimized out>) at /home/travis/src/sql/mdl.cc:2148
#4  0x00005572ceeadbab in open_table_get_mdl_lock (thd=thd@entry=0x7fb7e4017368, ot_ctx=ot_ctx@entry=0x7fb8440c5c80, mdl_request=0x7fb8440c53f0, mdl_request@entry=0x7fb7e4025298, flags=flags@entry=1024, mdl_ticket=mdl_ticket@entry=0x7fb8440c5638) at /home/travis/src/sql/sql_base.cc:1474
#5  0x00005572ceeb18a2 in open_table (thd=thd@entry=0x7fb7e4017368, table_list=table_list@entry=0x7fb7e4024e40, ot_ctx=ot_ctx@entry=0x7fb8440c5c80) at /home/travis/src/sql/sql_base.cc:1767
#6  0x00005572ceeb4703 in open_and_process_table (ot_ctx=0x7fb8440c5c80, has_prelocking_list=false, prelocking_strategy=0x7fb8440c5d30, flags=1024, counter=0x7fb8440c5d2c, tables=0x7fb7e4024e40, lex=0x7fb7e401af88, thd=0x7fb7e4017368) at /home/travis/src/sql/sql_base.cc:3548
#7  open_tables (thd=thd@entry=0x7fb7e4017368, options=..., start=start@entry=0x7fb8440c5d18, counter=counter@entry=0x7fb8440c5d2c, flags=flags@entry=1024, prelocking_strategy=prelocking_strategy@entry=0x7fb8440c5d30) at /home/travis/src/sql/sql_base.cc:4068
#8  0x00005572cef6397c in open_tables (flags=1024, counter=0x7fb8440c5d2c, tables=0x7fb8440c5d18, thd=0x7fb7e4017368) at /home/travis/src/sql/sql_base.h:466
#9  mysqld_show_create_get_fields (thd=thd@entry=0x7fb7e4017368, table_list=table_list@entry=0x7fb7e4024e40, field_list=field_list@entry=0x7fb8440c5fd0, buffer=buffer@entry=0x7fb8440c5ff0) at /home/travis/src/sql/sql_show.cc:1261
#10 0x00005572cef64268 in mysqld_show_create (thd=thd@entry=0x7fb7e4017368, table_list=table_list@entry=0x7fb7e4024e40) at /home/travis/src/sql/sql_show.cc:1366
#11 0x00005572cef085f0 in mysql_execute_command (thd=thd@entry=0x7fb7e4017368) at /home/travis/src/sql/sql_parse.cc:4528
#12 0x00005572cef0d9f1 in mysql_parse (thd=0x7fb7e4017368, rawbuf=<optimized out>, length=48, parser_state=0x7fb8440c8650, is_com_multi=<optimized out>, is_next_command=<optimized out>) at /home/travis/src/sql/sql_parse.cc:8073
#13 0x00005572cef1039b in dispatch_command (command=command@entry=COM_QUERY, thd=thd@entry=0x7fb7e4017368, packet=packet@entry=0x7fb7e409ea59 "SHOW CREATE TABLE seq1 /* QNO 60360 CON_ID 14 */ ", packet_length=packet_length@entry=49, is_com_multi=is_com_multi@entry=false, is_next_command=is_next_command@entry=false) at /home/travis/src/sql/sql_parse.cc:1847
#14 0x00005572cef111ce in do_command (thd=0x7fb7e4017368) at /home/travis/src/sql/sql_parse.cc:1392
#15 0x00005572cefd552c in do_handle_one_connection (connect=connect@entry=0x5572d1baeb38) at /home/travis/src/sql/sql_connect.cc:1402
#16 0x00005572cefd5644 in handle_one_connection (arg=0x5572d1baeb38) at /home/travis/src/sql/sql_connect.cc:1308
#17 0x00007fb846952184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#18 0x00007fb845e5effd in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 24 (Thread 0x7fb8167fc700 (LWP 23463)):
#0  0x00007fb8469567be in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00005572cf2a9e8e in os_event::timed_wait (this=this@entry=0x5572d1b3ee40, abstime=abstime@entry=0x7fb8167fbd50) at /home/travis/src/storage/innobase/os/os0event.cc:283
#2  0x00005572cf2aa0b1 in os_event::wait_time_low (this=0x5572d1b3ee40, time_in_usec=time_in_usec@entry=10000000, reset_sig_count=9, reset_sig_count@entry=0) at /home/travis/src/storage/innobase/os/os0event.cc:405
#3  0x00005572cf2aa365 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/travis/src/storage/innobase/os/os0event.cc:505
#4  0x00005572cf402f85 in dict_stats_thread () at /home/travis/src/storage/innobase/dict/dict0stats_bg.cc:449
#5  0x00007fb846952184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#6  0x00007fb845e5effd in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 23 (Thread 0x7fb8177fe700 (LWP 23461)):
#0  0x00007fb8469567be in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00005572cf2a9e8e in os_event::timed_wait (this=this@entry=0x5572d13578b0, abstime=abstime@entry=0x7fb8177fdcc0) at /home/travis/src/storage/innobase/os/os0event.cc:283
#2  0x00005572cf2aa0b1 in os_event::wait_time_low (this=0x5572d13578b0, time_in_usec=time_in_usec@entry=1000000, reset_sig_count=1) at /home/travis/src/storage/innobase/os/os0event.cc:405
#3  0x00005572cf2aa365 in os_event_wait_time_low (event=<optimized out>, time_in_usec=time_in_usec@entry=1000000, reset_sig_count=<optimized out>) at /home/travis/src/storage/innobase/os/os0event.cc:505
#4  0x00005572cf32e237 in srv_error_monitor_thread () at /home/travis/src/storage/innobase/srv/srv0srv.cc:1853
#5  0x00007fb846952184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#6  0x00007fb845e5effd in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 22 (Thread 0x7fb81d4f6700 (LWP 23457)):
#0  0x00007fb8477f958a in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
#1  0x00005572cf2a54c4 in LinuxAIOHandler::collect (this=this@entry=0x7fb81d4f5c60) at /home/travis/src/storage/innobase/os/os0file.cc:1933
#2  0x00005572cf2a58e4 in LinuxAIOHandler::poll (this=this@entry=0x7fb81d4f5c60, m1=m1@entry=0x7fb81d4f5d00, m2=m2@entry=0x7fb81d4f5d08, request=request@entry=0x7fb81d4f5d10) at /home/travis/src/storage/innobase/os/os0file.cc:2078
#3  0x00005572cf2a94d7 in os_aio_linux_handler (request=0x7fb81d4f5d10, m2=0x7fb81d4f5d08, m1=0x7fb81d4f5d00, global_segment=9) at /home/travis/src/storage/innobase/os/os0file.cc:2132
#4  os_aio_handler (segment=segment@entry=9, m1=m1@entry=0x7fb81d4f5d00, m2=m2@entry=0x7fb81d4f5d08, request=request@entry=0x7fb81d4f5d10) at /home/travis/src/storage/innobase/os/os0file.cc:5696
#5  0x00005572cf40f6e3 in fil_aio_wait (segment=segment@entry=9) at /home/travis/src/storage/innobase/fil/fil0fil.cc:4559
#6  0x00005572cf331148 in io_handler_thread (arg=<optimized out>) at /home/travis/src/storage/innobase/srv/srv0start.cc:331
#7  0x00007fb846952184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#8  0x00007fb845e5effd in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 21 (Thread 0x7fb844113700 (LWP 23477)):
#0  0x00007fb845e51c5d in poll () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00005572cf5cde15 in poll (__timeout=28800000, __nfds=1, __fds=0x7fb844112b40) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
#2  vio_io_wait (vio=vio@entry=0x5572d1b772c8, event=<optimized out>, timeout=28800000) at /home/travis/src/vio/viosocket.c:962
#3  0x00005572cf5cdf02 in vio_socket_io_wait (vio=0x5572d1b772c8, event=<optimized out>) at /home/travis/src/vio/viosocket.c:119
#4  0x00005572cf5cdfc4 in vio_read (vio=0x5572d1b772c8, buf=0x5572d1bed398 "\a", size=4) at /home/travis/src/vio/viosocket.c:196
#5  0x00005572cee61e7a in my_real_read (net=0x5572d1be5c48, complen=complen@entry=0x7fb844112dd8, header=1 '\001') at /home/travis/src/sql/net_serv.cc:962
#6  0x00005572cee62cf1 in my_net_read_packet_reallen (net=0x5572d1be5c48, read_from_server=<optimized out>, reallen=reallen@entry=0x7fb844112e28) at /home/travis/src/sql/net_serv.cc:1243
#7  0x00005572cee62deb in my_net_read_packet (net=<optimized out>, read_from_server=<optimized out>) at /home/travis/src/sql/net_serv.cc:1227
#8  0x00005572cef11138 in do_command (thd=0x5572d1be59e8) at /home/travis/src/sql/sql_parse.cc:1267
#9  0x00005572cefd552c in do_handle_one_connection (connect=connect@entry=0x5572d1251298) at /home/travis/src/sql/sql_connect.cc:1402
#10 0x00005572cefd5644 in handle_one_connection (arg=0x5572d1251298) at /home/travis/src/sql/sql_connect.cc:1308
#11 0x00007fb846952184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#12 0x00007fb845e5effd in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 20 (Thread 0x7fb81dcf7700 (LWP 23456)):
#0  0x00007fb8477f958a in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
#1  0x00005572cf2a54c4 in LinuxAIOHandler::collect (this=this@entry=0x7fb81dcf6c60) at /home/travis/src/storage/innobase/os/os0file.cc:1933
#2  0x00005572cf2a58e4 in LinuxAIOHandler::poll (this=this@entry=0x7fb81dcf6c60, m1=m1@entry=0x7fb81dcf6d00, m2=m2@entry=0x7fb81dcf6d08, request=request@entry=0x7fb81dcf6d10) at /home/travis/src/storage/innobase/os/os0file.cc:2078
#3  0x00005572cf2a94d7 in os_aio_linux_handler (request=0x7fb81dcf6d10, m2=0x7fb81dcf6d08, m1=0x7fb81dcf6d00, global_segment=8) at /home/travis/src/storage/innobase/os/os0file.cc:2132
#4  os_aio_handler (segment=segment@entry=8, m1=m1@entry=0x7fb81dcf6d00, m2=m2@entry=0x7fb81dcf6d08, request=request@entry=0x7fb81dcf6d10) at /home/travis/src/storage/innobase/os/os0file.cc:5696
#5  0x00005572cf40f6e3 in fil_aio_wait (segment=segment@entry=8) at /home/travis/src/storage/innobase/fil/fil0fil.cc:4559
#6  0x00005572cf331148 in io_handler_thread (arg=<optimized out>) at /home/travis/src/storage/innobase/srv/srv0start.cc:331
#7  0x00007fb846952184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#8  0x00007fb845e5effd in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 19 (Thread 0x7fb81e4f8700 (LWP 23455)):
#0  0x00007fb8477f958a in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
#1  0x00005572cf2a54c4 in LinuxAIOHandler::collect (this=this@entry=0x7fb81e4f7c60) at /home/travis/src/storage/innobase/os/os0file.cc:1933
#2  0x00005572cf2a58e4 in LinuxAIOHandler::poll (this=this@entry=0x7fb81e4f7c60, m1=m1@entry=0x7fb81e4f7d00, m2=m2@entry=0x7fb81e4f7d08, request=request@entry=0x7fb81e4f7d10) at /home/travis/src/storage/innobase/os/os0file.cc:2078
#3  0x00005572cf2a94d7 in os_aio_linux_handler (request=0x7fb81e4f7d10, m2=0x7fb81e4f7d08, m1=0x7fb81e4f7d00, global_segment=7) at /home/travis/src/storage/innobase/os/os0file.cc:2132
#4  os_aio_handler (segment=segment@entry=7, m1=m1@entry=0x7fb81e4f7d00, m2=m2@entry=0x7fb81e4f7d08, request=request@entry=0x7fb81e4f7d10) at /home/travis/src/storage/innobase/os/os0file.cc:5696
#5  0x00005572cf40f6e3 in fil_aio_wait (segment=segment@entry=7) at /home/travis/src/storage/innobase/fil/fil0fil.cc:4559
#6  0x00005572cf331148 in io_handler_thread (arg=<optimized out>) at /home/travis/src/storage/innobase/srv/srv0start.cc:331
#7  0x00007fb846952184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#8  0x00007fb845e5effd in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 18 (Thread 0x7fb80d7fa700 (LWP 23472)):
#0  0x00007fb846956404 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00005572cf2a9fb1 in wait (this=0x5572d1357ab0) at /home/travis/src/storage/innobase/os/os0event.cc:163
#2  os_event::wait_low (this=0x5572d1357ab0, reset_sig_count=1, reset_sig_count@entry=0) at /home/travis/src/storage/innobase/os/os0event.cc:333
#3  0x00005572cf2aa375 in os_event_wait_low (event=<optimized out>, reset_sig_count=reset_sig_count@entry=0) at /home/travis/src/storage/innobase/os/os0event.cc:522
#4  0x00005572cf3b6c3a in buf_resize_thread () at /home/travis/src/storage/innobase/buf/buf0buf.cc:3259
#5  0x00007fb846952184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#6  0x00007fb845e5effd in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 17 (Thread 0x7fb80effd700 (LWP 23469)):
#0  0x00007fb846956404 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00005572cf2a9fb1 in wait (this=0x5572d1357830) at /home/travis/src/storage/innobase/os/os0event.cc:163
#2  os_event::wait_low (this=0x5572d1357830, reset_sig_count=9034, reset_sig_count@entry=0) at /home/travis/src/storage/innobase/os/os0event.cc:333
#3  0x00005572cf2aa375 in os_event_wait_low (event=<optimized out>, reset_sig_count=reset_sig_count@entry=0) at /home/travis/src/storage/innobase/os/os0event.cc:522
#4  0x00005572cf32b263 in srv_resume_thread (slot=slot@entry=0x5572cfe92ee8 <srv_sys+360>, sig_count=sig_count@entry=0, wait=wait@entry=true, timeout_usec=timeout_usec@entry=0) at /home/travis/src/storage/innobase/srv/srv0srv.cc:915
#5  0x00005572cf330283 in srv_worker_thread (arg=<optimized out>) at /home/travis/src/storage/innobase/srv/srv0srv.cc:2483
#6  0x00007fb846952184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#7  0x00007fb845e5effd in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 16 (Thread 0x7fb81ecf9700 (LWP 23454)):
#0  0x00007fb8477f958a in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
#1  0x00005572cf2a54c4 in LinuxAIOHandler::collect (this=this@entry=0x7fb81ecf8c60) at /home/travis/src/storage/innobase/os/os0file.cc:1933
#2  0x00005572cf2a58e4 in LinuxAIOHandler::poll (this=this@entry=0x7fb81ecf8c60, m1=m1@entry=0x7fb81ecf8d00, m2=m2@entry=0x7fb81ecf8d08, request=request@entry=0x7fb81ecf8d10) at /home/travis/src/storage/innobase/os/os0file.cc:2078
#3  0x00005572cf2a94d7 in os_aio_linux_handler (request=0x7fb81ecf8d10, m2=0x7fb81ecf8d08, m1=0x7fb81ecf8d00, global_segment=6) at /home/travis/src/storage/innobase/os/os0file.cc:2132
#4  os_aio_handler (segment=segment@entry=6, m1=m1@entry=0x7fb81ecf8d00, m2=m2@entry=0x7fb81ecf8d08, request=request@entry=0x7fb81ecf8d10) at /home/travis/src/storage/innobase/os/os0file.cc:5696
#5  0x00005572cf40f6e3 in fil_aio_wait (segment=segment@entry=6) at /home/travis/src/storage/innobase/fil/fil0fil.cc:4559
#6  0x00005572cf331148 in io_handler_thread (arg=<optimized out>) at /home/travis/src/storage/innobase/srv/srv0start.cc:331
#7  0x00007fb846952184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#8  0x00007fb845e5effd in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 15 (Thread 0x7fb80f7fe700 (LWP 23468)):
#0  0x00007fb846956404 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00005572cf2a9fb1 in wait (this=0x5572d13577b0) at /home/travis/src/storage/innobase/os/os0event.cc:163
#2  os_event::wait_low (this=0x5572d13577b0, reset_sig_count=9577, reset_sig_count@entry=0) at /home/travis/src/storage/innobase/os/os0event.cc:333
#3  0x00005572cf2aa375 in os_event_wait_low (event=<optimized out>, reset_sig_count=reset_sig_count@entry=0) at /home/travis/src/storage/innobase/os/os0event.cc:522
#4  0x00005572cf32b263 in srv_resume_thread (slot=slot@entry=0x5572cfe92eb0 <srv_sys+304>, sig_count=sig_count@entry=0, wait=wait@entry=true, timeout_usec=timeout_usec@entry=0) at /home/travis/src/storage/innobase/srv/srv0srv.cc:915
#5  0x00005572cf330283 in srv_worker_thread (arg=<optimized out>) at /home/travis/src/storage/innobase/srv/srv0srv.cc:2483
#6  0x00007fb846952184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#7  0x00007fb845e5effd in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 14 (Thread 0x7fb81f4fa700 (LWP 23453)):
#0  0x00007fb8477f958a in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
#1  0x00005572cf2a54c4 in LinuxAIOHandler::collect (this=this@entry=0x7fb81f4f9c60) at /home/travis/src/storage/innobase/os/os0file.cc:1933
#2  0x00005572cf2a58e4 in LinuxAIOHandler::poll (this=this@entry=0x7fb81f4f9c60, m1=m1@entry=0x7fb81f4f9d00, m2=m2@entry=0x7fb81f4f9d08, request=request@entry=0x7fb81f4f9d10) at /home/travis/src/storage/innobase/os/os0file.cc:2078
#3  0x00005572cf2a94d7 in os_aio_linux_handler (request=0x7fb81f4f9d10, m2=0x7fb81f4f9d08, m1=0x7fb81f4f9d00, global_segment=5) at /home/travis/src/storage/innobase/os/os0file.cc:2132
#4  os_aio_handler (segment=segment@entry=5, m1=m1@entry=0x7fb81f4f9d00, m2=m2@entry=0x7fb81f4f9d08, request=request@entry=0x7fb81f4f9d10) at /home/travis/src/storage/innobase/os/os0file.cc:5696
#5  0x00005572cf40f6e3 in fil_aio_wait (segment=segment@entry=5) at /home/travis/src/storage/innobase/fil/fil0fil.cc:4559
#6  0x00005572cf331148 in io_handler_thread (arg=<optimized out>) at /home/travis/src/storage/innobase/srv/srv0start.cc:331
#7  0x00007fb846952184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#8  0x00007fb845e5effd in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 13 (Thread 0x7fb814ff9700 (LWP 23467)):
#0  0x00007fb846956404 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00005572cf2a9fb1 in wait (this=0x5572d1357730) at /home/travis/src/storage/innobase/os/os0event.cc:163
#2  os_event::wait_low (this=0x5572d1357730, reset_sig_count=10795, reset_sig_count@entry=0) at /home/travis/src/storage/innobase/os/os0event.cc:333
#3  0x00005572cf2aa375 in os_event_wait_low (event=<optimized out>, reset_sig_count=reset_sig_count@entry=0) at /home/travis/src/storage/innobase/os/os0event.cc:522
#4  0x00005572cf32b263 in srv_resume_thread (slot=slot@entry=0x5572cfe92e78 <srv_sys+248>, sig_count=sig_count@entry=0, wait=wait@entry=true, timeout_usec=timeout_usec@entry=0) at /home/travis/src/storage/innobase/srv/srv0srv.cc:915
#5  0x00005572cf330283 in srv_worker_thread (arg=<optimized out>) at /home/travis/src/storage/innobase/srv/srv0srv.cc:2483
#6  0x00007fb846952184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#7  0x00007fb845e5effd in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 12 (Thread 0x7fb817fff700 (LWP 23465)):
#0  0x00007fb846959b9d in nanosleep () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00005572cf2aa53c in os_thread_sleep (tm=tm@entry=1000000) at /home/travis/src/storage/innobase/os/os0thread.cc:230
#2  0x00005572cf32fa4d in srv_master_sleep () at /home/travis/src/storage/innobase/srv/srv0srv.cc:2325
#3  srv_master_thread (arg=<optimized out>) at /home/travis/src/storage/innobase/srv/srv0srv.cc:2366
#4  0x00007fb846952184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#5  0x00007fb845e5effd in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 11 (Thread 0x7fb81fcfb700 (LWP 23452)):
#0  0x00007fb8477f958a in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
#1  0x00005572cf2a54c4 in LinuxAIOHandler::collect (this=this@entry=0x7fb81fcfac60) at /home/travis/src/storage/innobase/os/os0file.cc:1933
#2  0x00005572cf2a58e4 in LinuxAIOHandler::poll (this=this@entry=0x7fb81fcfac60, m1=m1@entry=0x7fb81fcfad00, m2=m2@entry=0x7fb81fcfad08, request=request@entry=0x7fb81fcfad10) at /home/travis/src/storage/innobase/os/os0file.cc:2078
#3  0x00005572cf2a94d7 in os_aio_linux_handler (request=0x7fb81fcfad10, m2=0x7fb81fcfad08, m1=0x7fb81fcfad00, global_segment=4) at /home/travis/src/storage/innobase/os/os0file.cc:2132
#4  os_aio_handler (segment=segment@entry=4, m1=m1@entry=0x7fb81fcfad00, m2=m2@entry=0x7fb81fcfad08, request=request@entry=0x7fb81fcfad10) at /home/travis/src/storage/innobase/os/os0file.cc:5696
#5  0x00005572cf40f6e3 in fil_aio_wait (segment=segment@entry=4) at /home/travis/src/storage/innobase/fil/fil0fil.cc:4559
#6  0x00005572cf331148 in io_handler_thread (arg=<optimized out>) at /home/travis/src/storage/innobase/srv/srv0start.cc:331
#7  0x00007fb846952184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#8  0x00007fb845e5effd in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 10 (Thread 0x7fb816ffd700 (LWP 23462)):
#0  0x00007fb8469567be in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00005572cf2a9e8e in os_event::timed_wait (this=this@entry=0x5572d1357930, abstime=abstime@entry=0x7fb816ffcdc0) at /home/travis/src/storage/innobase/os/os0event.cc:283
#2  0x00005572cf2aa0b1 in os_event::wait_time_low (this=0x5572d1357930, time_in_usec=time_in_usec@entry=5000000, reset_sig_count=1) at /home/travis/src/storage/innobase/os/os0event.cc:405
#3  0x00005572cf2aa365 in os_event_wait_time_low (event=<optimized out>, time_in_usec=time_in_usec@entry=5000000, reset_sig_count=<optimized out>) at /home/travis/src/storage/innobase/os/os0event.cc:505
#4  0x00005572cf32f2b0 in srv_monitor_thread () at /home/travis/src/storage/innobase/srv/srv0srv.cc:1689
#5  0x00007fb846952184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#6  0x00007fb845e5effd in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 9 (Thread 0x7fb8214fe700 (LWP 23449)):
#0  0x00007fb8477f958a in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
#1  0x00005572cf2a54c4 in LinuxAIOHandler::collect (this=this@entry=0x7fb8214fdc60) at /home/travis/src/storage/innobase/os/os0file.cc:1933
#2  0x00005572cf2a58e4 in LinuxAIOHandler::poll (this=this@entry=0x7fb8214fdc60, m1=m1@entry=0x7fb8214fdd00, m2=m2@entry=0x7fb8214fdd08, request=request@entry=0x7fb8214fdd10) at /home/travis/src/storage/innobase/os/os0file.cc:2078
#3  0x00005572cf2a94d7 in os_aio_linux_handler (request=0x7fb8214fdd10, m2=0x7fb8214fdd08, m1=0x7fb8214fdd00, global_segment=1) at /home/travis/src/storage/innobase/os/os0file.cc:2132
#4  os_aio_handler (segment=segment@entry=1, m1=m1@entry=0x7fb8214fdd00, m2=m2@entry=0x7fb8214fdd08, request=request@entry=0x7fb8214fdd10) at /home/travis/src/storage/innobase/os/os0file.cc:5696
#5  0x00005572cf40f6e3 in fil_aio_wait (segment=segment@entry=1) at /home/travis/src/storage/innobase/fil/fil0fil.cc:4559
#6  0x00005572cf331148 in io_handler_thread (arg=<optimized out>) at /home/travis/src/storage/innobase/srv/srv0start.cc:331
#7  0x00007fb846952184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#8  0x00007fb845e5effd in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 8 (Thread 0x7fb80ffff700 (LWP 23460)):
#0  0x00007fb8469567be in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00005572cf2a9e8e in os_event::timed_wait (this=this@entry=0x5572d1a28300, abstime=abstime@entry=0x7fb80fffed30) at /home/travis/src/storage/innobase/os/os0event.cc:283
#2  0x00005572cf2aa0b1 in os_event::wait_time_low (this=this@entry=0x5572d1a28300, time_in_usec=time_in_usec@entry=1000000, reset_sig_count=1) at /home/travis/src/storage/innobase/os/os0event.cc:405
#3  0x00005572cf2aa365 in os_event_wait_time_low (event=event@entry=0x5572d1a28300, time_in_usec=time_in_usec@entry=1000000, reset_sig_count=<optimized out>) at /home/travis/src/storage/innobase/os/os0event.cc:505
#4  0x00005572cf2853e5 in lock_wait_timeout_thread () at /home/travis/src/storage/innobase/lock/lock0wait.cc:543
#5  0x00007fb846952184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#6  0x00007fb845e5effd in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 7 (Thread 0x7fb821cff700 (LWP 23448)):
#0  0x00007fb8477f958a in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
#1  0x00005572cf2a54c4 in LinuxAIOHandler::collect (this=this@entry=0x7fb821cfec60) at /home/travis/src/storage/innobase/os/os0file.cc:1933
#2  0x00005572cf2a58e4 in LinuxAIOHandler::poll (this=this@entry=0x7fb821cfec60, m1=m1@entry=0x7fb821cfed00, m2=m2@entry=0x7fb821cfed08, request=request@entry=0x7fb821cfed10) at /home/travis/src/storage/innobase/os/os0file.cc:2078
#3  0x00005572cf2a94d7 in os_aio_linux_handler (request=0x7fb821cfed10, m2=0x7fb821cfed08, m1=0x7fb821cfed00, global_segment=0) at /home/travis/src/storage/innobase/os/os0file.cc:2132
#4  os_aio_handler (segment=segment@entry=0, m1=m1@entry=0x7fb821cfed00, m2=m2@entry=0x7fb821cfed08, request=request@entry=0x7fb821cfed10) at /home/travis/src/storage/innobase/os/os0file.cc:5696
#5  0x00005572cf40f6e3 in fil_aio_wait (segment=segment@entry=0) at /home/travis/src/storage/innobase/fil/fil0fil.cc:4559
#6  0x00005572cf331148 in io_handler_thread (arg=<optimized out>) at /home/travis/src/storage/innobase/srv/srv0start.cc:331
#7  0x00007fb846952184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#8  0x00007fb845e5effd in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 6 (Thread 0x7fb81ccf5700 (LWP 23458)):
#0  0x00007fb8469567be in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00005572cf2a9e8e in os_event::timed_wait (this=this@entry=0x5572d1357a30, abstime=abstime@entry=0x7fb81ccf4c40) at /home/travis/src/storage/innobase/os/os0event.cc:283
#2  0x00005572cf2aa0b1 in os_event::wait_time_low (this=0x5572d1357a30, time_in_usec=time_in_usec@entry=729000, reset_sig_count=reset_sig_count@entry=2) at /home/travis/src/storage/innobase/os/os0event.cc:405
#3  0x00005572cf2aa365 in os_event_wait_time_low (event=<optimized out>, time_in_usec=time_in_usec@entry=729000, reset_sig_count=reset_sig_count@entry=2) at /home/travis/src/storage/innobase/os/os0event.cc:505
#4  0x00005572cf3c2a57 in pc_sleep_if_needed (cur_time=1530799566107, sig_count=2, next_loop_time=1530799566836) at /home/travis/src/storage/innobase/buf/buf0flu.cc:2688
#5  buf_flush_page_cleaner_coordinator () at /home/travis/src/storage/innobase/buf/buf0flu.cc:3147
#6  0x00007fb846952184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#7  0x00007fb845e5effd in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 5 (Thread 0x7fb844da9700 (LWP 23447)):
#0  0x00007fb8469567be in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00005572cf49f64d in inline_mysql_cond_timedwait (src_file=0x5572cf740138 "/home/travis/src/storage/maria/ma_servicethread.c", src_line=116, abstime=0x7fb844da8de0, mutex=0x5572d0795340 <LOCK_checkpoint>, that=0x5572d0795300 <COND_checkpoint>) at /home/travis/src/include/mysql/psi/mysql_thread.h:1215
#2  my_service_thread_sleep (control=control@entry=0x5572cfe95a40 <checkpoint_control>, sleep_time=<optimized out>) at /home/travis/src/storage/maria/ma_servicethread.c:115
#3  0x00005572cf498e22 in ma_checkpoint_background (arg=0x1e) at /home/travis/src/storage/maria/ma_checkpoint.c:707
#4  0x00007fb846952184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#5  0x00007fb845e5effd in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 4 (Thread 0x7fb8204fc700 (LWP 23451)):
#0  0x00007fb8477f958a in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
#1  0x00005572cf2a54c4 in LinuxAIOHandler::collect (this=this@entry=0x7fb8204fbc60) at /home/travis/src/storage/innobase/os/os0file.cc:1933
#2  0x00005572cf2a58e4 in LinuxAIOHandler::poll (this=this@entry=0x7fb8204fbc60, m1=m1@entry=0x7fb8204fbd00, m2=m2@entry=0x7fb8204fbd08, request=request@entry=0x7fb8204fbd10) at /home/travis/src/storage/innobase/os/os0file.cc:2078
#3  0x00005572cf2a94d7 in os_aio_linux_handler (request=0x7fb8204fbd10, m2=0x7fb8204fbd08, m1=0x7fb8204fbd00, global_segment=3) at /home/travis/src/storage/innobase/os/os0file.cc:2132
#4  os_aio_handler (segment=segment@entry=3, m1=m1@entry=0x7fb8204fbd00, m2=m2@entry=0x7fb8204fbd08, request=request@entry=0x7fb8204fbd10) at /home/travis/src/storage/innobase/os/os0file.cc:5696
#5  0x00005572cf40f6e3 in fil_aio_wait (segment=segment@entry=3) at /home/travis/src/storage/innobase/fil/fil0fil.cc:4559
#6  0x00005572cf331148 in io_handler_thread (arg=<optimized out>) at /home/travis/src/storage/innobase/srv/srv0start.cc:331
#7  0x00007fb846952184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#8  0x00007fb845e5effd in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 3 (Thread 0x7fb845d60700 (LWP 23446)):
#0  0x00007fb8469567be in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00005572cf5917cd in inline_mysql_cond_timedwait (that=0x5572d07a4da0 <COND_timer>, mutex=0x5572d07a4de0 <LOCK_timer>, src_file=0x5572cf7542a8 "/home/travis/src/mysys/thr_timer.c", src_line=292, abstime=0x7fb845d5fe50) at /home/travis/src/include/mysql/psi/mysql_thread.h:1215
#2  timer_handler (arg=<optimized out>) at /home/travis/src/mysys/thr_timer.c:292
#3  0x00007fb846952184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#4  0x00007fb845e5effd in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 2 (Thread 0x7fb820cfd700 (LWP 23450)):
#0  0x00007fb8477f958a in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
#1  0x00005572cf2a54c4 in LinuxAIOHandler::collect (this=this@entry=0x7fb820cfcc60) at /home/travis/src/storage/innobase/os/os0file.cc:1933
#2  0x00005572cf2a58e4 in LinuxAIOHandler::poll (this=this@entry=0x7fb820cfcc60, m1=m1@entry=0x7fb820cfcd00, m2=m2@entry=0x7fb820cfcd08, request=request@entry=0x7fb820cfcd10) at /home/travis/src/storage/innobase/os/os0file.cc:2078
#3  0x00005572cf2a94d7 in os_aio_linux_handler (request=0x7fb820cfcd10, m2=0x7fb820cfcd08, m1=0x7fb820cfcd00, global_segment=2) at /home/travis/src/storage/innobase/os/os0file.cc:2132
#4  os_aio_handler (segment=segment@entry=2, m1=m1@entry=0x7fb820cfcd00, m2=m2@entry=0x7fb820cfcd08, request=request@entry=0x7fb820cfcd10) at /home/travis/src/storage/innobase/os/os0file.cc:5696
#5  0x00005572cf40f6e3 in fil_aio_wait (segment=segment@entry=2) at /home/travis/src/storage/innobase/fil/fil0fil.cc:4559
#6  0x00005572cf331148 in io_handler_thread (arg=<optimized out>) at /home/travis/src/storage/innobase/srv/srv0start.cc:331
#7  0x00007fb846952184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#8  0x00007fb845e5effd in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 1 (Thread 0x7fb8302f1700 (LWP 23488)):
#0  0x00007fb846957611 in pthread_kill () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00005572cf0c184c in handle_fatal_signal (sig=11) at /home/travis/src/sql/signal_handler.cc:305
#2  <signal handler called>
#3  0x00005572ceeb16da in open_table (thd=thd@entry=0x7fb7f4000a88, table_list=table_list@entry=0x7fb8302ee4e0, ot_ctx=ot_ctx@entry=0x7fb8302ee2d0) at /home/travis/src/sql/sql_base.cc:1900
#4  0x00005572ceeb4703 in open_and_process_table (ot_ctx=0x7fb8302ee2d0, has_prelocking_list=false, prelocking_strategy=0x7fb8302ee3b0, flags=2080, counter=0x7fb8302ee36c, tables=0x7fb8302ee4e0, lex=0x7fb7f40046a8, thd=0x7fb7f4000a88) at /home/travis/src/sql/sql_base.cc:3548
#5  open_tables (thd=thd@entry=0x7fb7f4000a88, options=..., start=start@entry=0x7fb8302ee358, counter=counter@entry=0x7fb8302ee36c, flags=flags@entry=2080, prelocking_strategy=prelocking_strategy@entry=0x7fb8302ee3b0) at /home/travis/src/sql/sql_base.cc:4068
#6  0x00005572ceeb4c2d in open_and_lock_tables (thd=thd@entry=0x7fb7f4000a88, options=..., tables=tables@entry=0x7fb8302ee4e0, derived=derived@entry=false, flags=flags@entry=2080, prelocking_strategy=prelocking_strategy@entry=0x7fb8302ee3b0) at /home/travis/src/sql/sql_base.cc:4943
#7  0x00005572cf031335 in open_and_lock_tables (flags=2080, derived=false, tables=0x7fb8302ee4e0, thd=0x7fb7f4000a88) at /home/travis/src/sql/sql_base.h:497
#8  sequence_insert (thd=thd@entry=0x7fb7f4000a88, lex=0x7fb7f40046a8, org_table_list=org_table_list@entry=0x7fb7f4011848) at /home/travis/src/sql/sql_sequence.cc:341
#9  0x00005572cef892ea in mysql_create_table_no_lock (thd=thd@entry=0x7fb7f4000a88, db=db@entry=0x7fb7f4011860, table_name=table_name@entry=0x7fb7f4011870, create_info=create_info@entry=0x7fb8302ef050, alter_info=alter_info@entry=0x7fb8302eef90, is_trans=is_trans@entry=0x7fb8302eee5f, create_table_mode=0, table_list=table_list@entry=0x7fb7f4011848) at /home/travis/src/sql/sql_table.cc:5103
#10 0x00005572cef894c7 in mysql_create_table (thd=thd@entry=0x7fb7f4000a88, create_table=create_table@entry=0x7fb7f4011848, create_info=create_info@entry=0x7fb8302ef050, alter_info=alter_info@entry=0x7fb8302eef90) at /home/travis/src/sql/sql_table.cc:5186
#11 0x00005572cef0c949 in mysql_execute_command (thd=thd@entry=0x7fb7f4000a88) at /home/travis/src/sql/sql_parse.cc:4275
#12 0x00005572cef0d9f1 in mysql_parse (thd=0x7fb7f4000a88, rawbuf=<optimized out>, length=61, parser_state=0x7fb8302f0650, is_com_multi=<optimized out>, is_next_command=<optimized out>) at /home/travis/src/sql/sql_parse.cc:8073
#13 0x00005572cef1039b in dispatch_command (command=command@entry=COM_QUERY, thd=thd@entry=0x7fb7f4000a88, packet=packet@entry=0x7fb7f4009429 "CREATE SEQUENCE IF NOT EXISTS seq1  /* QNO 63601 CON_ID 17 */ ", packet_length=packet_length@entry=62, is_com_multi=is_com_multi@entry=false, is_next_command=is_next_command@entry=false) at /home/travis/src/sql/sql_parse.cc:1847
#14 0x00005572cef111ce in do_command (thd=0x7fb7f4000a88) at /home/travis/src/sql/sql_parse.cc:1392
#15 0x00005572cefd552c in do_handle_one_connection (connect=connect@entry=0x5572d1bac5a8) at /home/travis/src/sql/sql_connect.cc:1402
#16 0x00005572cefd5644 in handle_one_connection (arg=0x5572d1bac5a8) at /home/travis/src/sql/sql_connect.cc:1308
#17 0x00007fb846952184 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#18 0x00007fb845e5effd in clone () from /lib/x86_64-linux-gnu/libc.so.6