backtrace while the crash happened: All stack traces from pstack 99502: Thread 30 (Thread 0x2b34ad730700 (LWP 99504)): #0 0x000000313a60b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x00000000009837ab in os_event_wait_low(os_event*, long) () #2 0x00000000009801e6 in os_aio_simulated_handle(unsigned long, fil_node_t**, void**, unsigned long*) () #3 0x0000000000a73916 in fil_aio_wait(unsigned long) () #4 0x00000000009e7778 in io_handler_thread () #5 0x000000313a607851 in start_thread () from /lib64/libpthread.so.0 #6 0x000000313a2e767d in clone () from /lib64/libc.so.6 Thread 29 (Thread 0x2b35edd7f700 (LWP 99505)): #0 0x000000313a60b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x00000000009837ab in os_event_wait_low(os_event*, long) () #2 0x00000000009801e6 in os_aio_simulated_handle(unsigned long, fil_node_t**, void**, unsigned long*) () #3 0x0000000000a73916 in fil_aio_wait(unsigned long) () #4 0x00000000009e7778 in io_handler_thread () #5 0x000000313a607851 in start_thread () from /lib64/libpthread.so.0 #6 0x000000313a2e767d in clone () from /lib64/libc.so.6 Thread 28 (Thread 0x2b35edf80700 (LWP 99506)): #0 0x000000313a60b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x00000000009837ab in os_event_wait_low(os_event*, long) () #2 0x00000000009801e6 in os_aio_simulated_handle(unsigned long, fil_node_t**, void**, unsigned long*) () #3 0x0000000000a73916 in fil_aio_wait(unsigned long) () #4 0x00000000009e7778 in io_handler_thread () #5 0x000000313a607851 in start_thread () from /lib64/libpthread.so.0 #6 0x000000313a2e767d in clone () from /lib64/libc.so.6 Thread 27 (Thread 0x2b35ee181700 (LWP 99507)): #0 0x000000313a60b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x00000000009837ab in os_event_wait_low(os_event*, long) () #2 0x00000000009801e6 in os_aio_simulated_handle(unsigned long, fil_node_t**, void**, unsigned long*) () #3 0x0000000000a73916 in fil_aio_wait(unsigned long) () #4 0x00000000009e7778 in io_handler_thread () #5 0x000000313a607851 in start_thread () from /lib64/libpthread.so.0 #6 0x000000313a2e767d in clone () from /lib64/libc.so.6 Thread 26 (Thread 0x2b35ee382700 (LWP 99508)): #0 0x000000313a60b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x00000000009837ab in os_event_wait_low(os_event*, long) () #2 0x00000000009801e6 in os_aio_simulated_handle(unsigned long, fil_node_t**, void**, unsigned long*) () #3 0x0000000000a73916 in fil_aio_wait(unsigned long) () #4 0x00000000009e7778 in io_handler_thread () #5 0x000000313a607851 in start_thread () from /lib64/libpthread.so.0 #6 0x000000313a2e767d in clone () from /lib64/libc.so.6 Thread 25 (Thread 0x2b35ee583700 (LWP 99509)): #0 0x000000313a60b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x00000000009837ab in os_event_wait_low(os_event*, long) () #2 0x00000000009801e6 in os_aio_simulated_handle(unsigned long, fil_node_t**, void**, unsigned long*) () #3 0x0000000000a73916 in fil_aio_wait(unsigned long) () #4 0x00000000009e7778 in io_handler_thread () #5 0x000000313a607851 in start_thread () from /lib64/libpthread.so.0 #6 0x000000313a2e767d in clone () from /lib64/libc.so.6 Thread 24 (Thread 0x2b35ee784700 (LWP 99510)): #0 0x000000313a60b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x00000000009837ab in os_event_wait_low(os_event*, long) () #2 0x00000000009801e6 in os_aio_simulated_handle(unsigned long, fil_node_t**, void**, unsigned long*) () #3 0x0000000000a73916 in fil_aio_wait(unsigned long) () #4 0x00000000009e7778 in io_handler_thread () #5 0x000000313a607851 in start_thread () from /lib64/libpthread.so.0 #6 0x000000313a2e767d in clone () from /lib64/libc.so.6 Thread 23 (Thread 0x2b35ee985700 (LWP 99511)): #0 0x000000313a60b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x00000000009837ab in os_event_wait_low(os_event*, long) () #2 0x00000000009801e6 in os_aio_simulated_handle(unsigned long, fil_node_t**, void**, unsigned long*) () #3 0x0000000000a73916 in fil_aio_wait(unsigned long) () #4 0x00000000009e7778 in io_handler_thread () #5 0x000000313a607851 in start_thread () from /lib64/libpthread.so.0 #6 0x000000313a2e767d in clone () from /lib64/libc.so.6 Thread 22 (Thread 0x2b35eeb86700 (LWP 99512)): #0 0x000000313a60b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x00000000009837ab in os_event_wait_low(os_event*, long) () #2 0x00000000009801e6 in os_aio_simulated_handle(unsigned long, fil_node_t**, void**, unsigned long*) () #3 0x0000000000a73916 in fil_aio_wait(unsigned long) () #4 0x00000000009e7778 in io_handler_thread () #5 0x000000313a607851 in start_thread () from /lib64/libpthread.so.0 #6 0x000000313a2e767d in clone () from /lib64/libc.so.6 Thread 21 (Thread 0x2b35eed87700 (LWP 99513)): #0 0x000000313a60b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x00000000009837ab in os_event_wait_low(os_event*, long) () #2 0x00000000009801e6 in os_aio_simulated_handle(unsigned long, fil_node_t**, void**, unsigned long*) () #3 0x0000000000a73916 in fil_aio_wait(unsigned long) () #4 0x00000000009e7778 in io_handler_thread () #5 0x000000313a607851 in start_thread () from /lib64/libpthread.so.0 #6 0x000000313a2e767d in clone () from /lib64/libc.so.6 Thread 20 (Thread 0x2b35eef88700 (LWP 99515)): #0 0x000000313a60b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x0000000000983ea3 in os_event_wait_time_low(os_event*, unsigned long, long) () #2 0x000000000096b239 in lock_wait_timeout_thread () #3 0x000000313a607851 in start_thread () from /lib64/libpthread.so.0 #4 0x000000313a2e767d in clone () from /lib64/libc.so.6 Thread 19 (Thread 0x2b35ef189700 (LWP 99516)): #0 0x000000313a60b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x0000000000983ea3 in os_event_wait_time_low(os_event*, unsigned long, long) () #2 0x00000000009e3894 in srv_error_monitor_thread () #3 0x000000313a607851 in start_thread () from /lib64/libpthread.so.0 #4 0x000000313a2e767d in clone () from /lib64/libc.so.6 Thread 18 (Thread 0x2b35ef38a700 (LWP 99517)): #0 0x000000313a60b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x0000000000983ea3 in os_event_wait_time_low(os_event*, unsigned long, long) () #2 0x00000000009e4d26 in srv_monitor_thread () #3 0x000000313a607851 in start_thread () from /lib64/libpthread.so.0 #4 0x000000313a2e767d in clone () from /lib64/libc.so.6 Thread 17 (Thread 0x2b35ef58b700 (LWP 99518)): #0 0x000000313a2e0263 in select () from /lib64/libc.so.6 #1 0x00000000009843ff in os_thread_sleep(unsigned long) () #2 0x00000000009e6eb8 in srv_master_thread () #3 0x000000313a607851 in start_thread () from /lib64/libpthread.so.0 #4 0x000000313a2e767d in clone () from /lib64/libc.so.6 Thread 16 (Thread 0x2b35ef78c700 (LWP 99519)): #0 0x000000313a60b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x00000000009837ab in os_event_wait_low(os_event*, long) () #2 0x00000000009e5c98 in srv_purge_coordinator_thread () #3 0x000000313a607851 in start_thread () from /lib64/libpthread.so.0 #4 0x000000313a2e767d in clone () from /lib64/libc.so.6 Thread 15 (Thread 0x2b35ef98d700 (LWP 99520)): #0 0x000000313a2e0263 in select () from /lib64/libc.so.6 #1 0x00000000009843ff in os_thread_sleep(unsigned long) () #2 0x0000000000a43c41 in buf_flush_page_cleaner_thread () #3 0x000000313a607851 in start_thread () from /lib64/libpthread.so.0 #4 0x000000313a2e767d in clone () from /lib64/libc.so.6 Thread 14 (Thread 0x2b35efb8e700 (LWP 99521)): #0 0x000000313a60b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x00000000009837ab in os_event_wait_low(os_event*, long) () #2 0x0000000000a3fbde in buf_dump_thread () #3 0x000000313a607851 in start_thread () from /lib64/libpthread.so.0 #4 0x000000313a2e767d in clone () from /lib64/libc.so.6 Thread 13 (Thread 0x2b35efd8f700 (LWP 99522)): #0 0x000000313a2da37d in read () from /lib64/libc.so.6 #1 0x000000313a2711e8 in _IO_new_file_underflow () from /lib64/libc.so.6 #2 0x000000313a272cee in _IO_default_uflow_internal () from /lib64/libc.so.6 #3 0x000000313a2674da in _IO_getline_info_internal () from /lib64/libc.so.6 #4 0x000000313a266339 in fgets () from /lib64/libc.so.6 #5 0x00000000008de188 in rds_pstack () #6 0x0000000000651193 in handle_fatal_signal () #7 #8 0x000000313a2328a5 in raise () from /lib64/libc.so.6 #9 0x000000313a234085 in abort () from /lib64/libc.so.6 #10 0x0000000000a6fb3f in dict_stats_update(dict_table_t*, dict_stats_upd_option_t) () #11 0x0000000000a7050a in dict_stats_thread () #12 0x000000313a607851 in start_thread () from /lib64/libpthread.so.0 #13 0x000000313a2e767d in clone () from /lib64/libc.so.6 Thread 12 (Thread 0x2b35eff90700 (LWP 99523)): #0 0x000000313a60b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x0000000000983ea3 in os_event_wait_time_low(os_event*, unsigned long, long) () #2 0x0000000000a0eef0 in ib_wqueue_timedwait(ib_wqueue_t*, long) () #3 0x0000000000a9caec in fts_optimize_thread(void*) () #4 0x000000313a607851 in start_thread () from /lib64/libpthread.so.0 #5 0x000000313a2e767d in clone () from /lib64/libc.so.6 Thread 11 (Thread 0x2b35f50d0700 (LWP 99526)): #0 0x000000313a60f2a5 in sigwait () from /lib64/libpthread.so.0 #1 0x00000000005818c3 in signal_hand () #2 0x000000313a607851 in start_thread () from /lib64/libpthread.so.0 #3 0x000000313a2e767d in clone () from /lib64/libc.so.6 Thread 10 (Thread 0x2b3600040700 (LWP 100861)): #0 0x000000313a60b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x0000000000889700 in MYSQL_BIN_LOG::wait_for_update_bin_log(THD*, timespec const*) () #2 0x00000000008a36aa in mysql_binlog_send(THD*, char*, unsigned long long, Gtid_set const*) () #3 0x00000000008a3cc0 in com_binlog_dump_gtid(THD*, char*, unsigned int) () #4 0x00000000006dc85a in dispatch_command(enum_server_command, THD*, char*, unsigned int) () #5 0x00000000006a449d in do_handle_one_connection(THD*) () #6 0x00000000006a45d2 in handle_one_connection () #7 0x000000313a607851 in start_thread () from /lib64/libpthread.so.0 #8 0x000000313a2e767d in clone () from /lib64/libc.so.6 Thread 9 (Thread 0x2b360c040700 (LWP 102595)): #0 0x000000313a60b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x0000000000583c9f in one_thread_per_connection_end(THD*, bool) () #2 0x00000000006a44e2 in do_handle_one_connection(THD*) () #3 0x00000000006a45d2 in handle_one_connection () #4 0x000000313a607851 in start_thread () from /lib64/libpthread.so.0 #5 0x000000313a2e767d in clone () from /lib64/libc.so.6 Thread 8 (Thread 0x2b360c081700 (LWP 102602)): #0 0x000000313a2ddfc3 in poll () from /lib64/libc.so.6 #1 0x0000000000b4699f in vio_io_wait () #2 0x0000000000b46a93 in vio_socket_io_wait () #3 0x0000000000b470c8 in vio_read () #4 0x0000000000b47172 in vio_read_buff () #5 0x0000000000645793 in net_read_raw_loop(st_net*, unsigned long) () #6 0x0000000000646128 in net_read_packet(st_net*, unsigned long*) () #7 0x000000000064629c in my_net_read () #8 0x0000000000777aaa in cli_safe_read () #9 0x00000000008b40c2 in handle_slave_io () #10 0x000000313a607851 in start_thread () from /lib64/libpthread.so.0 #11 0x000000313a2e767d in clone () from /lib64/libc.so.6 Thread 7 (Thread 0x2b3618040700 (LWP 102603)): #0 0x000000313a2e0263 in select () from /lib64/libc.so.6 #1 0x00000000009843ff in os_thread_sleep(unsigned long) () #2 0x0000000000a6fe1b in dict_stats_wait_bg_to_stop_using_table(dict_table_t*, trx_t*) () #3 0x00000000009c4c02 in row_drop_table_for_mysql(char const*, trx_t*, bool, bool) () #4 0x0000000000942c3d in ha_innobase::delete_table(char const*) () #5 0x0000000000596fed in ha_delete_table(THD*, handlerton*, char const*, char const*, char const*, bool) () #6 0x000000000072676b in quick_rm_table(THD*, handlerton*, char const*, char const*, unsigned int) () #7 0x000000000072983b in mysql_alter_table(THD*, char*, char*, st_ha_create_information*, TABLE_LIST*, Alter_info*, unsigned int, st_order*, bool) () #8 0x000000000072a597 in mysql_recreate_table(THD*, TABLE_LIST*) () #9 0x00000000008199bc in mysql_admin_table(THD*, TABLE_LIST*, st_ha_check_opt*, char const*, thr_lock_type, bool, bool, unsigned int, int (*)(THD*, TABLE_LIST*, st_ha_check_opt*), int (handler::*)(THD*, st_ha_check_opt*), int (*)(THD*, TABLE_LIST*)) () #10 0x0000000000819fe8 in Sql_cmd_optimize_table::execute(THD*) () #11 0x00000000006d67f9 in mysql_execute_command(THD*) () #12 0x00000000006da967 in mysql_parse(THD*, char*, unsigned int, Parser_state*) () #13 0x0000000000878c39 in Query_log_event::do_apply_event(Relay_log_info const*, char const*, unsigned int) () #14 0x0000000000881e58 in Log_event::apply_event(Relay_log_info*) () #15 0x00000000008b29f9 in apply_event_and_update_pos(Log_event**, THD*, Relay_log_info*) () #16 0x00000000008b4fa4 in exec_relay_log_event(THD*, Relay_log_info*) () #17 0x00000000008b6647 in handle_slave_sql () #18 0x000000313a607851 in start_thread () from /lib64/libpthread.so.0 #19 0x000000313a2e767d in clone () from /lib64/libc.so.6 Thread 6 (Thread 0x2b3638040700 (LWP 25123)): #0 0x000000313a60b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x0000000000583c9f in one_thread_per_connection_end(THD*, bool) () #2 0x00000000006a44e2 in do_handle_one_connection(THD*) () #3 0x00000000006a45d2 in handle_one_connection () #4 0x000000313a607851 in start_thread () from /lib64/libpthread.so.0 #5 0x000000313a2e767d in clone () from /lib64/libc.so.6 Thread 5 (Thread 0x2b34aec64700 (LWP 117989)): #0 0x000000313a60b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x0000000000583c9f in one_thread_per_connection_end(THD*, bool) () #2 0x00000000006a44e2 in do_handle_one_connection(THD*) () #3 0x00000000006a45d2 in handle_one_connection () #4 0x000000313a607851 in start_thread () from /lib64/libpthread.so.0 #5 0x000000313a2e767d in clone () from /lib64/libc.so.6 Thread 4 (Thread 0x2b3654040700 (LWP 118004)): #0 0x000000313a60b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x0000000000583c9f in one_thread_per_connection_end(THD*, bool) () #2 0x00000000006a44e2 in do_handle_one_connection(THD*) () #3 0x00000000006a45d2 in handle_one_connection () #4 0x000000313a607851 in start_thread () from /lib64/libpthread.so.0 #5 0x000000313a2e767d in clone () from /lib64/libc.so.6 Thread 3 (Thread 0x2b3654081700 (LWP 118011)): #0 0x000000313a60b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x0000000000583c9f in one_thread_per_connection_end(THD*, bool) () #2 0x00000000006a44e2 in do_handle_one_connection(THD*) () #3 0x00000000006a45d2 in handle_one_connection () #4 0x000000313a607851 in start_thread () from /lib64/libpthread.so.0 #5 0x000000313a2e767d in clone () from /lib64/libc.so.6 Thread 2 (Thread 0x2b3660040700 (LWP 118953)): #0 0x000000313a60b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x0000000000583c9f in one_thread_per_connection_end(THD*, bool) () #2 0x00000000006a44e2 in do_handle_one_connection(THD*) () #3 0x00000000006a45d2 in handle_one_connection () #4 0x000000313a607851 in start_thread () from /lib64/libpthread.so.0 #5 0x000000313a2e767d in clone () from /lib64/libc.so.6 Thread 1 (Thread 0x2b34ad52d260 (LWP 99502)): #0 0x000000313a2ddfc3 in poll () from /lib64/libc.so.6 #1 0x000000000058241c in handle_connections_sockets() () #2 0x000000000058a767 in mysqld_main(int, char**) () #3 0x000000313a21ecdd in __libc_start_main () from /lib64/libc.so.6 #4 0x000000000057be71 in _start ()