(gdb) where
#0  0x000020000008a114 in __GI___pthread_timedjoin_ex (threadid=35184433295456, thread_return=0x0, abstime=<optimized out>, block=<optimized out>) at pthread_join_common.c:84
#1  0x0000200000089e30 in __pthread_join (threadid=<optimized out>, thread_return=<optimized out>) at pthread_join.c:24
#2  0x000000012c1a6964 in my_thread_join (thread=<optimized out>, value_ptr=<optimized out>) at /root/rpmbuild/BUILD/mysql-8.0.17/mysys/my_thread.cc:100
#3  0x000000012ae7b7fc in bootstrap::run_bootstrap_thread (file=0x0, boot_handler=<optimized out>, thread_type=<optimized out>)
    at /root/rpmbuild/BUILD/mysql-8.0.17/sql/bootstrap.cc:436
#4  0x000000012be40fb4 in dd::Dictionary_impl::init (dd_init=<optimized out>) at /root/rpmbuild/BUILD/mysql-8.0.17/sql/dd/impl/dictionary_impl.cc:146
#5  0x000000012be3b8d0 in dd::init (dd_init=<optimized out>) at /root/rpmbuild/BUILD/mysql-8.0.17/sql/dd/impl/dd.cc:65
#6  0x000000012aa475f4 in init_server_components () at /root/rpmbuild/BUILD/mysql-8.0.17/sql/mysqld.cc:5484
#7  0x000000012aa4df74 in mysqld_main (argc=<optimized out>, argv=<optimized out>) at /root/rpmbuild/BUILD/mysql-8.0.17/sql/mysqld.cc:6482
#8  0x000000012a9faba0 in main (argc=<optimized out>, argv=<optimized out>) at /root/rpmbuild/BUILD/mysql-8.0.17/sql/main.cc:25

(gdb) i thread
  Id   Target Id                                 Frame 
* 1    Thread 0x200000049d50 (LWP 4787) "mysqld" 0x000020000008a114 in __GI___pthread_timedjoin_ex (threadid=35184433295456, thread_return=0x0, abstime=<optimized out>, 
    block=<optimized out>) at pthread_join_common.c:84
  2    Thread 0x200003a5f060 (LWP 4788) "mysqld" 0x000020000009144c in futex_wait_cancelable (private=0, expected=0, futex_word=0x20000400b954)
    at ../sysdeps/unix/sysv/linux/futex-internal.h:88
  3    Thread 0x20000840f060 (LWP 4790) "mysqld" syscall () at ../sysdeps/unix/sysv/linux/powerpc/syscall.S:29
  4    Thread 0x20000a75f060 (LWP 4791) "mysqld" syscall () at ../sysdeps/unix/sysv/linux/powerpc/syscall.S:29
  5    Thread 0x20000ab6f060 (LWP 4792) "mysqld" syscall () at ../sysdeps/unix/sysv/linux/powerpc/syscall.S:29
  6    Thread 0x20000af7f060 (LWP 4793) "mysqld" syscall () at ../sysdeps/unix/sysv/linux/powerpc/syscall.S:29
  7    Thread 0x20000b38f060 (LWP 4794) "mysqld" syscall () at ../sysdeps/unix/sysv/linux/powerpc/syscall.S:29
  8    Thread 0x20000b79f060 (LWP 4795) "mysqld" syscall () at ../sysdeps/unix/sysv/linux/powerpc/syscall.S:29
  9    Thread 0x20000bbaf060 (LWP 4796) "mysqld" syscall () at ../sysdeps/unix/sysv/linux/powerpc/syscall.S:29
  10   Thread 0x20000bfbf060 (LWP 4797) "mysqld" syscall () at ../sysdeps/unix/sysv/linux/powerpc/syscall.S:29
  11   Thread 0x20002c40f060 (LWP 4798) "mysqld" syscall () at ../sysdeps/unix/sysv/linux/powerpc/syscall.S:29
  12   Thread 0x20002c81f060 (LWP 4799) "mysqld" syscall () at ../sysdeps/unix/sysv/linux/powerpc/syscall.S:29
  13   Thread 0x20002cc2f060 (LWP 4800) "mysqld" 0x000020000009144c in futex_wait_cancelable (private=0, expected=0, futex_word=0x200004046e30)
    at ../sysdeps/unix/sysv/linux/futex-internal.h:88
  14   Thread 0x20002f86f060 (LWP 4807) "mysqld" 0x0000200000091950 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x20002f86e0c8, expected=0, 
    futex_word=0x200004212774) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
  15   Thread 0x20003c40f060 (LWP 4808) "mysqld" 0x0000200000091950 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x20003c40e138, expected=0, 
    futex_word=0x200004212810) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
  16   Thread 0x20003cc2f060 (LWP 4809) "mysqld" 0x0000200000091950 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x20003cc2e0c8, expected=0, 
    futex_word=0x200004212950) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
  17   Thread 0x20002fc7f060 (LWP 4810) "mysqld" 0x0000200000091950 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x20002fc7e0e8, expected=0, 
    futex_word=0x200004216804) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
  18   Thread 0x20003c81f060 (LWP 4811) "mysqld" 0x0000200000091950 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x20003c81e0c8, expected=0, 
    futex_word=0x2000042128b4) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
  19   Thread 0x20003d03f060 (LWP 4812) "mysqld" 0x0000200000091950 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x20003d03de68, expected=0, 
    futex_word=0x200004216764) at ../sysdeps/unix/sysv/linux/futex-internal.h:142

(gdb) thread 2
[Switching to thread 2 (Thread 0x200003a5f060 (LWP 4788))]
#0  0x000020000009144c in futex_wait_cancelable (private=0, expected=0, futex_word=0x20000400b954) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
88	  int err = lll_futex_timed_wait (futex_word, expected, NULL, private);
(gdb) where
#0  0x000020000009144c in futex_wait_cancelable (private=0, expected=0, futex_word=0x20000400b954) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x20000400b900, cond=0x20000400b928) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x20000400b928, mutex=0x20000400b900) at pthread_cond_wait.c:655
#3  0x000000012c36ee74 in os_event::wait (this=<optimized out>) at /root/rpmbuild/BUILD/mysql-8.0.17/storage/innobase/include/sync0types.h:540
#4  os_event::wait_low (this=0x20000400b8e8, reset_sig_count=<optimized out>) at /root/rpmbuild/BUILD/mysql-8.0.17/storage/innobase/os/os0event.cc:371
#5  0x000000012c36f4e0 in os_event_wait_low (event=<optimized out>, reset_sig_count=<optimized out>) at /root/rpmbuild/BUILD/mysql-8.0.17/storage/innobase/os/os0event.cc:606
#6  0x000000012c4d6e80 in rw_lock_debug_mutex_enter () at /root/rpmbuild/BUILD/mysql-8.0.17/storage/innobase/sync/sync0debug.cc:1188
#7  0x000000012c4c5234 in rw_lock_own (lock=0x20000c4ca5b0, lock_type=4) at /root/rpmbuild/BUILD/mysql-8.0.17/storage/innobase/sync/sync0rw.cc:967
#8  0x000000012c5e6844 in buf_pool_watch_is_sentinel (buf_pool=0x20000415a758, bpage=0x20000847ef00) at /root/rpmbuild/BUILD/mysql-8.0.17/storage/innobase/include/buf0types.h:183
#9  0x000000012c6152f4 in buf_page_hash_get_locked (buf_pool=buf_pool@entry=0x20000415a758, page_id=..., lock=lock@entry=0x200003a54770, watch=false, lock_mode=4)
    at /root/rpmbuild/BUILD/mysql-8.0.17/storage/innobase/include/buf0buf.ic:1018
#10 0x000000012c61ad3c in buf_flush_try_neighbors (n_to_flush=18446744073709551614, n_flushed=535, flush_type=BUF_FLUSH_LIST, page_id=<synthetic pointer>...)
    at /root/rpmbuild/BUILD/mysql-8.0.17/storage/innobase/buf/buf0flu.cc:1548
#11 buf_flush_page_and_try_neighbors (bpage=bpage@entry=0x20000847ef00, flush_type=flush_type@entry=BUF_FLUSH_LIST, n_to_flush=n_to_flush@entry=18446744073709551614, 
    count=count@entry=0x200003a548c8) at /root/rpmbuild/BUILD/mysql-8.0.17/storage/innobase/buf/buf0flu.cc:1652
#12 0x000000012c61c080 in buf_do_flush_list_batch (lsn_limit=9223372036854775807, min_n=18446744073709551614, buf_pool=0x20000415a758)
    at /root/rpmbuild/BUILD/mysql-8.0.17/storage/innobase/buf/buf0flu.cc:1879
#13 buf_flush_batch (lsn_limit=9223372036854775807, min_n=18446744073709551614, flush_type=BUF_FLUSH_LIST, buf_pool=0x20000415a758)
    at /root/rpmbuild/BUILD/mysql-8.0.17/storage/innobase/buf/buf0flu.cc:1944
#14 buf_flush_do_batch (buf_pool=0x20000415a758, type=<optimized out>, min_n=18446744073709551614, lsn_limit=9223372036854775807, n_processed=0x200003a549b0)
    at /root/rpmbuild/BUILD/mysql-8.0.17/storage/innobase/buf/buf0flu.cc:2071
#15 0x000000012c61c7d4 in buf_flush_lists (min_n=18446744073709551614, lsn_limit=9223372036854775807, n_processed=0x200003a54a40)
    at /root/rpmbuild/BUILD/mysql-8.0.17/storage/innobase/buf/buf0flu.cc:2121
#16 0x000000012c61c944 in buf_flush_sync_all_buf_pools () at /root/rpmbuild/BUILD/mysql-8.0.17/storage/innobase/buf/buf0flu.cc:3371
#17 0x000000012c302598 in log_preflush_pool_modified_pages (log=..., new_oldest=54809) at /root/rpmbuild/BUILD/mysql-8.0.17/storage/innobase/log/log0chkp.cc:713
#18 0x000000012c303df4 in log_make_latest_checkpoint (log=...) at /root/rpmbuild/BUILD/mysql-8.0.17/storage/innobase/log/log0chkp.cc:673
#19 0x000000012c30402c in log_make_latest_checkpoint () at /root/rpmbuild/BUILD/mysql-8.0.17/storage/innobase/log/log0chkp.cc:692
#20 0x000000012c60e7f4 in buf_dblwr_create () at /root/rpmbuild/BUILD/mysql-8.0.17/storage/innobase/buf/buf0dblwr.cc:300
#21 0x000000012c4b4f98 in srv_start (create_new_db=<optimized out>, scan_directories=...) at /root/rpmbuild/BUILD/mysql-8.0.17/storage/innobase/srv/srv0start.cc:2709
#22 0x000000012c2228cc in innobase_init_files (tablespaces=0x200003a5e368, dict_init_mode=DICT_INIT_CREATE_FILES)
    at /root/rpmbuild/BUILD/mysql-8.0.17/storage/innobase/handler/ha_innodb.cc:4969
#23 innobase_ddse_dict_init (dict_init_mode=<optimized out>, version=<optimized out>, tables=0x200003a5e350, tablespaces=0x200003a5e368)
    at /root/rpmbuild/BUILD/mysql-8.0.17/storage/innobase/handler/ha_innodb.cc:12067
#24 0x000000012be679bc in dd::bootstrap::DDSE_dict_init (thd=<optimized out>, dict_init_mode=<optimized out>, version=<optimized out>)
    at /root/rpmbuild/BUILD/mysql-8.0.17/sql/dd/impl/bootstrap/bootstrapper.cc:736
#25 0x000000012be6cca0 in dd::bootstrap::initialize (thd=0x10003a49430) at /root/rpmbuild/BUILD/mysql-8.0.17/sql/dd/impl/bootstrap/bootstrapper.cc:891
#26 0x000000012ae7b234 in bootstrap::handle_bootstrap (arg=<optimized out>) at /root/rpmbuild/BUILD/mysql-8.0.17/sql/bootstrap.cc:347
#27 0x000000012c8f6a50 in pfs_spawn_thread (arg=0x100039dc8d0) at /root/rpmbuild/BUILD/mysql-8.0.17/storage/perfschema/pfs.cc:2854
#28 0x00002000000888c8 in start_thread (arg=0x200003a5f060) at pthread_create.c:479
#29 0x00002000012af498 in clone () at ../sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S:82


(gdb) thread 13
[Switching to thread 13 (Thread 0x20002cc2f060 (LWP 4800))]
#0  0x000020000009144c in futex_wait_cancelable (private=0, expected=0, futex_word=0x200004046e30) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
88	  int err = lll_futex_timed_wait (futex_word, expected, NULL, private);
(gdb) where
#0  0x000020000009144c in futex_wait_cancelable (private=0, expected=0, futex_word=0x200004046e30) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x200004046de0, cond=0x200004046e08) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x200004046e08, mutex=0x200004046de0) at pthread_cond_wait.c:655
#3  0x000000012c36ee74 in os_event::wait (this=<optimized out>) at /root/rpmbuild/BUILD/mysql-8.0.17/storage/innobase/include/sync0types.h:540
#4  os_event::wait_low (this=0x200004046dc8, reset_sig_count=<optimized out>) at /root/rpmbuild/BUILD/mysql-8.0.17/storage/innobase/os/os0event.cc:371
#5  0x000000012c36f4e0 in os_event_wait_low (event=<optimized out>, reset_sig_count=<optimized out>) at /root/rpmbuild/BUILD/mysql-8.0.17/storage/innobase/os/os0event.cc:606
#6  0x000000012c61d908 in buf_flush_page_coordinator_thread (n_page_cleaners=<optimized out>) at /root/rpmbuild/BUILD/mysql-8.0.17/storage/innobase/buf/buf0flu.cc:3051
#7  0x000000012c4b557c in std::__invoke_impl<void, void (*&)(unsigned long), unsigned long&> (__f=<synthetic pointer>: <optimized out>) at /usr/include/c++/9/bits/invoke.h:89
#8  std::__invoke<void (*&)(unsigned long), unsigned long&> (__fn=<synthetic pointer>: <optimized out>) at /usr/include/c++/9/bits/invoke.h:95
#9  std::_Bind<void (*(unsigned long))(unsigned long)>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (__args=..., this=<synthetic pointer>)
    at /usr/include/c++/9/functional:400
#10 std::_Bind<void (*(unsigned long))(unsigned long)>::operator()<, void>() (this=<synthetic pointer>) at /usr/include/c++/9/functional:484
#11 Runnable::operator()<void (*)(unsigned long), unsigned long> (f=@0x2000042115a0: 0x12c61d3c0 <buf_flush_page_coordinator_thread(size_t)>, this=0x2000042115a8)
    at /root/rpmbuild/BUILD/mysql-8.0.17/storage/innobase/include/os0thread-create.h:101
#12 std::__invoke_impl<void, Runnable, void (*)(unsigned long), unsigned long> (__f=...) at /usr/include/c++/9/bits/invoke.h:60
#13 std::__invoke<Runnable, void (*)(unsigned long), unsigned long> (__fn=...) at /usr/include/c++/9/bits/invoke.h:95
#14 std::thread::_Invoker<std::tuple<Runnable, void (*)(unsigned long), unsigned long> >::_M_invoke<0ul, 1ul, 2ul> (this=0x200004211598) at /usr/include/c++/9/thread:244
#15 std::thread::_Invoker<std::tuple<Runnable, void (*)(unsigned long), unsigned long> >::operator() (this=0x200004211598) at /usr/include/c++/9/thread:251
#16 std::thread::_State_impl<std::thread::_Invoker<std::tuple<Runnable, void (*)(unsigned long), unsigned long> > >::_M_run (this=0x200004211590) at /usr/include/c++/9/thread:195
#17 0x0000200000e74270 in ?? () from /lib64/libstdc++.so.6
#18 0x00002000000888c8 in start_thread (arg=0x20002cc2f060) at pthread_create.c:479
#19 0x00002000012af498 in clone () at ../sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S:82


(gdb) thread 14
[Switching to thread 14 (Thread 0x20002f86f060 (LWP 4807))]
#0  0x0000200000091950 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x20002f86e0c8, expected=0, futex_word=0x200004212774)
    at ../sysdeps/unix/sysv/linux/futex-internal.h:142
142	  int err = lll_futex_timed_wait (futex_word, expected, reltime, private);
(gdb) where
#0  0x0000200000091950 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x20002f86e0c8, expected=0, futex_word=0x200004212774)
    at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x20002f86e3b8, mutex=0x200004212720, cond=0x200004212748) at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x200004212748, mutex=0x200004212720, abstime=0x20002f86e3b8) at pthread_cond_wait.c:667
#3  0x000000012c36f874 in os_event::timed_wait (this=<error reading variable: value has been optimized out>, abstime=<optimized out>)
    at /root/rpmbuild/BUILD/mysql-8.0.17/storage/innobase/include/sync0types.h:540
#4  0x000000012c370a18 in os_event::wait_time_low (this=0x200004212708, time_in_usec=<optimized out>, reset_sig_count=<optimized out>)
    at /root/rpmbuild/BUILD/mysql-8.0.17/storage/innobase/os/os0event.cc:494
#5  0x000000012c370b80 in os_event_wait_time_low (event=<optimized out>, time_in_usec=<optimized out>, reset_sig_count=<optimized out>)
    at /root/rpmbuild/BUILD/mysql-8.0.17/storage/innobase/os/os0event.cc:592
#6  0x000000012c305e30 in log_checkpointer (log_ptr=0x200004215900) at /root/rpmbuild/BUILD/mysql-8.0.17/storage/innobase/log/log0chkp.cc:932
#7  0x000000012c31bbcc in std::__invoke_impl<void, void (*&)(log_t*), log_t*&> (__f=<synthetic pointer>: <optimized out>) at /usr/include/c++/9/bits/invoke.h:89
#8  std::__invoke<void (*&)(log_t*), log_t*&> (__fn=<synthetic pointer>: <optimized out>) at /usr/include/c++/9/bits/invoke.h:95
#9  std::_Bind<void (*(log_t*))(log_t*)>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (__args=..., this=<synthetic pointer>) at /usr/include/c++/9/functional:400
#10 std::_Bind<void (*(log_t*))(log_t*)>::operator()<, void>() (this=<synthetic pointer>) at /usr/include/c++/9/functional:484
#11 Runnable::operator()<void (*)(log_t*), log_t*> (f=@0x2000042e4dc0: 0x12c3059a0 <log_checkpointer(log_t*)>, this=0x2000042e4dc8)
    at /root/rpmbuild/BUILD/mysql-8.0.17/storage/innobase/include/os0thread-create.h:101
#12 std::__invoke_impl<void, Runnable, void (*)(log_t*), log_t*> (__f=...) at /usr/include/c++/9/bits/invoke.h:60
#13 std::__invoke<Runnable, void (*)(log_t*), log_t*> (__fn=...) at /usr/include/c++/9/bits/invoke.h:95
#14 std::thread::_Invoker<std::tuple<Runnable, void (*)(log_t*), log_t*> >::_M_invoke<0ul, 1ul, 2ul> (this=0x2000042e4db8) at /usr/include/c++/9/thread:244
#15 std::thread::_Invoker<std::tuple<Runnable, void (*)(log_t*), log_t*> >::operator() (this=0x2000042e4db8) at /usr/include/c++/9/thread:251
#16 std::thread::_State_impl<std::thread::_Invoker<std::tuple<Runnable, void (*)(log_t*), log_t*> > >::_M_run (this=0x2000042e4db0) at /usr/include/c++/9/thread:195
#17 0x0000200000e74270 in ?? () from /lib64/libstdc++.so.6
#18 0x00002000000888c8 in start_thread (arg=0x20002f86f060) at pthread_create.c:479
#19 0x00002000012af498 in clone () at ../sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S:82