(gdb) t a a bt

Thread 73 (Thread 803806400 (LWP 100850)):
#0  0x0000000802b353ba in poll () from /lib/libc.so.7
#1  0x00000008013f9986 in __poll (fds=0x7fffffffe680, nfds=3, timeout=-1) at /usr/src/lib/libthr/thread/thr_syscalls.c:441
#2  0x0000000000523d81 in handle_connections_sockets () at /usr/local/src/mariadb-10.0.21/sql/mysqld.cc:6131
#3  0x0000000000529f77 in mysqld_main (argc=71, argv=0x803806918) at /usr/local/src/mariadb-10.0.21/sql/mysqld.cc:5563
#4  0x000000000051fb7f in _start ()

Thread 72 (Thread 803807400 (LWP 100314)):
#0  _umtx_op_err () at /usr/src/lib/libthr/arch/amd64/amd64/_umtx_op_err.S:37
#1  0x00000008013f8fb6 in _thr_umtx_timedwait_uint (mtx=0x8011f4008, id=<optimized out>, clockid=<optimized out>, abstime=<optimized out>, shared=0)
    at /usr/src/lib/libthr/thread/thr_umtx.c:212
#2  0x000000080140103e in cond_wait_user (mp=<optimized out>, abstime=<optimized out>, cancel=1, cvp=<optimized out>)
    at /usr/src/lib/libthr/thread/thr_cond.c:255
#3  cond_wait_common (cond=<optimized out>, mutex=<optimized out>, abstime=0x0, cancel=1) at /usr/src/lib/libthr/thread/thr_cond.c:311
#4  0x0000000000845c21 in os_cond_wait (fast_mutex=0x803816fc0, cond=0x803816fe0) at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0sync.cc:214
#5  os_event_wait_low (event=0x803816fc0, reset_sig_count=1, reset_sig_count@entry=0) at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0sync.cc:592
#6  0x0000000000844bb9 in os_aio_simulated_handle (global_segment=global_segment@entry=0, message1=message1@entry=0x7fffffbfdf30, 
    message2=message2@entry=0x7fffffbfdf38, type=type@entry=0x7fffffbfdf40, space_id=space_id@entry=0x7fffffbfdf48)
    at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0file.cc:5684
#7  0x0000000000938785 in fil_aio_wait (segment=segment@entry=0) at /usr/local/src/mariadb-10.0.21/storage/xtradb/fil/fil0fil.cc:5695
#8  0x00000000008a2897 in io_handler_thread (arg=<optimized out>) at /usr/local/src/mariadb-10.0.21/storage/xtradb/srv/srv0start.cc:528
#9  0x00000008013f7585 in thread_start (curthread=0x803807400) at /usr/src/lib/libthr/thread/thr_create.c:284
#10 0x0000000000000000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7fffffbfe000

Thread 71 (Thread 803807800 (LWP 100326)):
#0  _umtx_op_err () at /usr/src/lib/libthr/arch/amd64/amd64/_umtx_op_err.S:37
#1  0x00000008013f8fb6 in _thr_umtx_timedwait_uint (mtx=0x8011f4020, id=<optimized out>, clockid=<optimized out>, abstime=<optimized out>, shared=0)
    at /usr/src/lib/libthr/thread/thr_umtx.c:212
#2  0x000000080140103e in cond_wait_user (mp=<optimized out>, abstime=<optimized out>, cancel=1, cvp=<optimized out>)
    at /usr/src/lib/libthr/thread/thr_cond.c:255
#3  cond_wait_common (cond=<optimized out>, mutex=<optimized out>, abstime=0x0, cancel=1) at /usr/src/lib/libthr/thread/thr_cond.c:311
#4  0x0000000000845c21 in os_cond_wait (fast_mutex=0x8047fc040, cond=0x8047fc060) at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0sync.cc:214
#5  os_event_wait_low (event=0x8047fc040, reset_sig_count=235026, reset_sig_count@entry=0)
---Type <return> to continue, or q <return> to quit--- 
    at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0sync.cc:592
#6  0x0000000000844bb9 in os_aio_simulated_handle (global_segment=global_segment@entry=1, message1=message1@entry=0x7fffff9fcf30, 
    message2=message2@entry=0x7fffff9fcf38, type=type@entry=0x7fffff9fcf40, space_id=space_id@entry=0x7fffff9fcf48)
    at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0file.cc:5684
#7  0x0000000000938785 in fil_aio_wait (segment=segment@entry=1) at /usr/local/src/mariadb-10.0.21/storage/xtradb/fil/fil0fil.cc:5695
#8  0x00000000008a2897 in io_handler_thread (arg=<optimized out>) at /usr/local/src/mariadb-10.0.21/storage/xtradb/srv/srv0start.cc:528
#9  0x00000008013f7585 in thread_start (curthread=0x803807800) at /usr/src/lib/libthr/thread/thr_create.c:284
#10 0x0000000000000000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7fffff9fd000

Thread 70 (Thread 803807c00 (LWP 100354)):
#0  _umtx_op_err () at /usr/src/lib/libthr/arch/amd64/amd64/_umtx_op_err.S:37
#1  0x00000008013f8fb6 in _thr_umtx_timedwait_uint (mtx=0x8011f4038, id=<optimized out>, clockid=<optimized out>, abstime=<optimized out>, shared=0)
    at /usr/src/lib/libthr/thread/thr_umtx.c:212
#2  0x000000080140103e in cond_wait_user (mp=<optimized out>, abstime=<optimized out>, cancel=1, cvp=<optimized out>)
    at /usr/src/lib/libthr/thread/thr_cond.c:255
#3  cond_wait_common (cond=<optimized out>, mutex=<optimized out>, abstime=0x0, cancel=1) at /usr/src/lib/libthr/thread/thr_cond.c:311
#4  0x0000000000845c21 in os_cond_wait (fast_mutex=0x8047fc080, cond=0x8047fc0a0) at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0sync.cc:214
#5  os_event_wait_low (event=0x8047fc080, reset_sig_count=11910, reset_sig_count@entry=0)
    at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0sync.cc:592
#6  0x0000000000844bb9 in os_aio_simulated_handle (global_segment=global_segment@entry=2, message1=message1@entry=0x7fffff7fbf30, 
    message2=message2@entry=0x7fffff7fbf38, type=type@entry=0x7fffff7fbf40, space_id=space_id@entry=0x7fffff7fbf48)
    at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0file.cc:5684
#7  0x0000000000938785 in fil_aio_wait (segment=segment@entry=2) at /usr/local/src/mariadb-10.0.21/storage/xtradb/fil/fil0fil.cc:5695
#8  0x00000000008a2897 in io_handler_thread (arg=<optimized out>) at /usr/local/src/mariadb-10.0.21/storage/xtradb/srv/srv0start.cc:528
#9  0x00000008013f7585 in thread_start (curthread=0x803807c00) at /usr/src/lib/libthr/thread/thr_create.c:284
#10 0x0000000000000000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7fffff7fc000

Thread 69 (Thread 803808000 (LWP 100356)):
#0  _umtx_op_err () at /usr/src/lib/libthr/arch/amd64/amd64/_umtx_op_err.S:37
#1  0x00000008013f8fb6 in _thr_umtx_timedwait_uint (mtx=0x8011f4050, id=<optimized out>, clockid=<optimized out>, abstime=<optimized out>, shared=0)
    at /usr/src/lib/libthr/thread/thr_umtx.c:212
#2  0x000000080140103e in cond_wait_user (mp=<optimized out>, abstime=<optimized out>, cancel=1, cvp=<optimized out>)
    at /usr/src/lib/libthr/thread/thr_cond.c:255
---Type <return> to continue, or q <return> to quit---
#3  cond_wait_common (cond=<optimized out>, mutex=<optimized out>, abstime=0x0, cancel=1) at /usr/src/lib/libthr/thread/thr_cond.c:311
#4  0x0000000000845c21 in os_cond_wait (fast_mutex=0x8047fc0c0, cond=0x8047fc0e0) at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0sync.cc:214
#5  os_event_wait_low (event=0x8047fc0c0, reset_sig_count=12396, reset_sig_count@entry=0)
    at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0sync.cc:592
#6  0x0000000000844bb9 in os_aio_simulated_handle (global_segment=global_segment@entry=3, message1=message1@entry=0x7fffff5faf30, 
    message2=message2@entry=0x7fffff5faf38, type=type@entry=0x7fffff5faf40, space_id=space_id@entry=0x7fffff5faf48)
    at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0file.cc:5684
#7  0x0000000000938785 in fil_aio_wait (segment=segment@entry=3) at /usr/local/src/mariadb-10.0.21/storage/xtradb/fil/fil0fil.cc:5695
#8  0x00000000008a2897 in io_handler_thread (arg=<optimized out>) at /usr/local/src/mariadb-10.0.21/storage/xtradb/srv/srv0start.cc:528
#9  0x00000008013f7585 in thread_start (curthread=0x803808000) at /usr/src/lib/libthr/thread/thr_create.c:284
#10 0x0000000000000000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7fffff5fb000

Thread 68 (Thread 803808400 (LWP 100365)):
#0  _umtx_op_err () at /usr/src/lib/libthr/arch/amd64/amd64/_umtx_op_err.S:37
#1  0x00000008013f8fb6 in _thr_umtx_timedwait_uint (mtx=0x8011f4068, id=<optimized out>, clockid=<optimized out>, abstime=<optimized out>, shared=0)
    at /usr/src/lib/libthr/thread/thr_umtx.c:212
#2  0x000000080140103e in cond_wait_user (mp=<optimized out>, abstime=<optimized out>, cancel=1, cvp=<optimized out>)
    at /usr/src/lib/libthr/thread/thr_cond.c:255
#3  cond_wait_common (cond=<optimized out>, mutex=<optimized out>, abstime=0x0, cancel=1) at /usr/src/lib/libthr/thread/thr_cond.c:311
#4  0x0000000000845c21 in os_cond_wait (fast_mutex=0x8047fc100, cond=0x8047fc120) at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0sync.cc:214
#5  os_event_wait_low (event=0x8047fc100, reset_sig_count=12869, reset_sig_count@entry=0)
    at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0sync.cc:592
#6  0x0000000000844bb9 in os_aio_simulated_handle (global_segment=global_segment@entry=4, message1=message1@entry=0x7fffff3f9f30, 
    message2=message2@entry=0x7fffff3f9f38, type=type@entry=0x7fffff3f9f40, space_id=space_id@entry=0x7fffff3f9f48)
    at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0file.cc:5684
#7  0x0000000000938785 in fil_aio_wait (segment=segment@entry=4) at /usr/local/src/mariadb-10.0.21/storage/xtradb/fil/fil0fil.cc:5695
#8  0x00000000008a2897 in io_handler_thread (arg=<optimized out>) at /usr/local/src/mariadb-10.0.21/storage/xtradb/srv/srv0start.cc:528
#9  0x00000008013f7585 in thread_start (curthread=0x803808400) at /usr/src/lib/libthr/thread/thr_create.c:284
#10 0x0000000000000000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7fffff3fa000

Thread 67 (Thread 803808800 (LWP 100375)):
#0  _umtx_op_err () at /usr/src/lib/libthr/arch/amd64/amd64/_umtx_op_err.S:37
#1  0x00000008013f8fb6 in _thr_umtx_timedwait_uint (mtx=0x8011f4080, id=<optimized out>, clockid=<optimized out>, abstime=<optimized out>, shared=0)
---Type <return> to continue, or q <return> to quit---
    at /usr/src/lib/libthr/thread/thr_umtx.c:212
#2  0x000000080140103e in cond_wait_user (mp=<optimized out>, abstime=<optimized out>, cancel=1, cvp=<optimized out>)
    at /usr/src/lib/libthr/thread/thr_cond.c:255
#3  cond_wait_common (cond=<optimized out>, mutex=<optimized out>, abstime=0x0, cancel=1) at /usr/src/lib/libthr/thread/thr_cond.c:311
#4  0x0000000000845c21 in os_cond_wait (fast_mutex=0x8047fc140, cond=0x8047fc160) at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0sync.cc:214
#5  os_event_wait_low (event=0x8047fc140, reset_sig_count=12064, reset_sig_count@entry=0)
    at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0sync.cc:592
#6  0x0000000000844bb9 in os_aio_simulated_handle (global_segment=global_segment@entry=5, message1=message1@entry=0x7fffff1f8f30, 
    message2=message2@entry=0x7fffff1f8f38, type=type@entry=0x7fffff1f8f40, space_id=space_id@entry=0x7fffff1f8f48)
    at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0file.cc:5684
#7  0x0000000000938785 in fil_aio_wait (segment=segment@entry=5) at /usr/local/src/mariadb-10.0.21/storage/xtradb/fil/fil0fil.cc:5695
#8  0x00000000008a2897 in io_handler_thread (arg=<optimized out>) at /usr/local/src/mariadb-10.0.21/storage/xtradb/srv/srv0start.cc:528
#9  0x00000008013f7585 in thread_start (curthread=0x803808800) at /usr/src/lib/libthr/thread/thr_create.c:284
#10 0x0000000000000000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7fffff1f9000

Thread 66 (Thread 803808c00 (LWP 100378)):
#0  _umtx_op_err () at /usr/src/lib/libthr/arch/amd64/amd64/_umtx_op_err.S:37
#1  0x00000008013f8fb6 in _thr_umtx_timedwait_uint (mtx=0x8011f4098, id=<optimized out>, clockid=<optimized out>, abstime=<optimized out>, shared=0)
    at /usr/src/lib/libthr/thread/thr_umtx.c:212
#2  0x000000080140103e in cond_wait_user (mp=<optimized out>, abstime=<optimized out>, cancel=1, cvp=<optimized out>)
    at /usr/src/lib/libthr/thread/thr_cond.c:255
#3  cond_wait_common (cond=<optimized out>, mutex=<optimized out>, abstime=0x0, cancel=1) at /usr/src/lib/libthr/thread/thr_cond.c:311
#4  0x0000000000845c21 in os_cond_wait (fast_mutex=0x8047fc180, cond=0x8047fc1a0) at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0sync.cc:214
#5  os_event_wait_low (event=0x8047fc180, reset_sig_count=1220690, reset_sig_count@entry=0)
    at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0sync.cc:592
#6  0x0000000000844bb9 in os_aio_simulated_handle (global_segment=global_segment@entry=6, message1=message1@entry=0x7ffffeff7f30, 
    message2=message2@entry=0x7ffffeff7f38, type=type@entry=0x7ffffeff7f40, space_id=space_id@entry=0x7ffffeff7f48)
    at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0file.cc:5684
#7  0x0000000000938785 in fil_aio_wait (segment=segment@entry=6) at /usr/local/src/mariadb-10.0.21/storage/xtradb/fil/fil0fil.cc:5695
#8  0x00000000008a2897 in io_handler_thread (arg=<optimized out>) at /usr/local/src/mariadb-10.0.21/storage/xtradb/srv/srv0start.cc:528
#9  0x00000008013f7585 in thread_start (curthread=0x803808c00) at /usr/src/lib/libthr/thread/thr_create.c:284
#10 0x0000000000000000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffeff8000

---Type <return> to continue, or q <return> to quit---
Thread 65 (Thread 803809000 (LWP 100385)):
#0  _umtx_op_err () at /usr/src/lib/libthr/arch/amd64/amd64/_umtx_op_err.S:37
#1  0x00000008013f8fb6 in _thr_umtx_timedwait_uint (mtx=0x8011f40b0, id=<optimized out>, clockid=<optimized out>, abstime=<optimized out>, shared=0)
    at /usr/src/lib/libthr/thread/thr_umtx.c:212
#2  0x000000080140103e in cond_wait_user (mp=<optimized out>, abstime=<optimized out>, cancel=1, cvp=<optimized out>)
    at /usr/src/lib/libthr/thread/thr_cond.c:255
#3  cond_wait_common (cond=<optimized out>, mutex=<optimized out>, abstime=0x0, cancel=1) at /usr/src/lib/libthr/thread/thr_cond.c:311
#4  0x0000000000845c21 in os_cond_wait (fast_mutex=0x8047fc1c0, cond=0x8047fc1e0) at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0sync.cc:214
#5  os_event_wait_low (event=0x8047fc1c0, reset_sig_count=1208335, reset_sig_count@entry=0)
    at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0sync.cc:592
#6  0x0000000000844bb9 in os_aio_simulated_handle (global_segment=global_segment@entry=7, message1=message1@entry=0x7ffffedf6f30, 
    message2=message2@entry=0x7ffffedf6f38, type=type@entry=0x7ffffedf6f40, space_id=space_id@entry=0x7ffffedf6f48)
    at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0file.cc:5684
#7  0x0000000000938785 in fil_aio_wait (segment=segment@entry=7) at /usr/local/src/mariadb-10.0.21/storage/xtradb/fil/fil0fil.cc:5695
#8  0x00000000008a2897 in io_handler_thread (arg=<optimized out>) at /usr/local/src/mariadb-10.0.21/storage/xtradb/srv/srv0start.cc:528
#9  0x00000008013f7585 in thread_start (curthread=0x803809000) at /usr/src/lib/libthr/thread/thr_create.c:284
#10 0x0000000000000000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffedf7000

Thread 64 (Thread 803809400 (LWP 100399)):
#0  _umtx_op_err () at /usr/src/lib/libthr/arch/amd64/amd64/_umtx_op_err.S:37
#1  0x00000008013f8fb6 in _thr_umtx_timedwait_uint (mtx=0x8011f40c8, id=<optimized out>, clockid=<optimized out>, abstime=<optimized out>, shared=0)
    at /usr/src/lib/libthr/thread/thr_umtx.c:212
#2  0x000000080140103e in cond_wait_user (mp=<optimized out>, abstime=<optimized out>, cancel=1, cvp=<optimized out>)
    at /usr/src/lib/libthr/thread/thr_cond.c:255
#3  cond_wait_common (cond=<optimized out>, mutex=<optimized out>, abstime=0x0, cancel=1) at /usr/src/lib/libthr/thread/thr_cond.c:311
#4  0x0000000000845c21 in os_cond_wait (fast_mutex=0x8047fc200, cond=0x8047fc220) at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0sync.cc:214
#5  os_event_wait_low (event=0x8047fc200, reset_sig_count=1209623, reset_sig_count@entry=0)
    at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0sync.cc:592
#6  0x0000000000844bb9 in os_aio_simulated_handle (global_segment=global_segment@entry=8, message1=message1@entry=0x7ffffebf5f30, 
    message2=message2@entry=0x7ffffebf5f38, type=type@entry=0x7ffffebf5f40, space_id=space_id@entry=0x7ffffebf5f48)
    at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0file.cc:5684
#7  0x0000000000938785 in fil_aio_wait (segment=segment@entry=8) at /usr/local/src/mariadb-10.0.21/storage/xtradb/fil/fil0fil.cc:5695
#8  0x00000000008a2897 in io_handler_thread (arg=<optimized out>) at /usr/local/src/mariadb-10.0.21/storage/xtradb/srv/srv0start.cc:528
#9  0x00000008013f7585 in thread_start (curthread=0x803809400) at /usr/src/lib/libthr/thread/thr_create.c:284
---Type <return> to continue, or q <return> to quit---
#10 0x0000000000000000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffebf6000

Thread 63 (Thread 803809800 (LWP 100401)):
#0  _umtx_op_err () at /usr/src/lib/libthr/arch/amd64/amd64/_umtx_op_err.S:37
#1  0x00000008013f8fb6 in _thr_umtx_timedwait_uint (mtx=0x8011f40e0, id=<optimized out>, clockid=<optimized out>, abstime=<optimized out>, shared=0)
    at /usr/src/lib/libthr/thread/thr_umtx.c:212
#2  0x000000080140103e in cond_wait_user (mp=<optimized out>, abstime=<optimized out>, cancel=1, cvp=<optimized out>)
    at /usr/src/lib/libthr/thread/thr_cond.c:255
#3  cond_wait_common (cond=<optimized out>, mutex=<optimized out>, abstime=0x0, cancel=1) at /usr/src/lib/libthr/thread/thr_cond.c:311
#4  0x0000000000845c21 in os_cond_wait (fast_mutex=0x8047fc240, cond=0x8047fc260) at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0sync.cc:214
#5  os_event_wait_low (event=0x8047fc240, reset_sig_count=1190205, reset_sig_count@entry=0)
    at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0sync.cc:592
#6  0x0000000000844bb9 in os_aio_simulated_handle (global_segment=global_segment@entry=9, message1=message1@entry=0x7ffffe9f4f30, 
    message2=message2@entry=0x7ffffe9f4f38, type=type@entry=0x7ffffe9f4f40, space_id=space_id@entry=0x7ffffe9f4f48)
    at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0file.cc:5684
#7  0x0000000000938785 in fil_aio_wait (segment=segment@entry=9) at /usr/local/src/mariadb-10.0.21/storage/xtradb/fil/fil0fil.cc:5695
#8  0x00000000008a2897 in io_handler_thread (arg=<optimized out>) at /usr/local/src/mariadb-10.0.21/storage/xtradb/srv/srv0start.cc:528
#9  0x00000008013f7585 in thread_start (curthread=0x803809800) at /usr/src/lib/libthr/thread/thr_create.c:284
#10 0x0000000000000000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffe9f5000

Thread 62 (Thread 80380a400 (LWP 100407)):
#0  _umtx_op_err () at /usr/src/lib/libthr/arch/amd64/amd64/_umtx_op_err.S:37
#1  0x00000008013f8fb6 in _thr_umtx_timedwait_uint (mtx=0x8011f4110, id=<optimized out>, clockid=<optimized out>, abstime=<optimized out>, shared=0)
    at /usr/src/lib/libthr/thread/thr_umtx.c:212
#2  0x000000080140103e in cond_wait_user (mp=<optimized out>, abstime=<optimized out>, cancel=1, cvp=<optimized out>)
    at /usr/src/lib/libthr/thread/thr_cond.c:255
#3  cond_wait_common (cond=<optimized out>, mutex=<optimized out>, abstime=0x7ffffe5f2ed0, cancel=1) at /usr/src/lib/libthr/thread/thr_cond.c:311
#4  0x0000000000845d66 in os_cond_wait_timed (abstime=0x7ffffe5f2ed0, fast_mutex=0x120e93fa40, cond=0x120e93fa60)
    at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0sync.cc:177
#5  os_event_wait_time_low (event=event@entry=0x120e93fa40, time_in_usec=time_in_usec@entry=1000000, reset_sig_count=reset_sig_count@entry=1)
    at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0sync.cc:705
#6  0x0000000000829cd0 in lock_wait_timeout_thread (arg=<optimized out>) at /usr/local/src/mariadb-10.0.21/storage/xtradb/lock/lock0wait.cc:499
#7  0x00000008013f7585 in thread_start (curthread=0x80380a400) at /usr/src/lib/libthr/thread/thr_create.c:284
---Type <return> to continue, or q <return> to quit---
#8  0x0000000000000000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffe5f3000

Thread 61 (Thread 80380a800 (LWP 100417)):
#0  _umtx_op_err () at /usr/src/lib/libthr/arch/amd64/amd64/_umtx_op_err.S:37
#1  0x00000008013f8fb6 in _thr_umtx_timedwait_uint (mtx=0x8011f4128, id=<optimized out>, clockid=<optimized out>, abstime=<optimized out>, shared=0)
    at /usr/src/lib/libthr/thread/thr_umtx.c:212
#2  0x000000080140103e in cond_wait_user (mp=<optimized out>, abstime=<optimized out>, cancel=1, cvp=<optimized out>)
    at /usr/src/lib/libthr/thread/thr_cond.c:255
#3  cond_wait_common (cond=<optimized out>, mutex=<optimized out>, abstime=0x7ffffe3f1ec0, cancel=1) at /usr/src/lib/libthr/thread/thr_cond.c:311
#4  0x0000000000845d66 in os_cond_wait_timed (abstime=0x7ffffe3f1ec0, fast_mutex=0x803816400, cond=0x803816420)
    at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0sync.cc:177
#5  os_event_wait_time_low (event=0x803816400, time_in_usec=time_in_usec@entry=1000000, reset_sig_count=1)
    at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0sync.cc:705
#6  0x000000000089fb83 in srv_error_monitor_thread (arg=<optimized out>) at /usr/local/src/mariadb-10.0.21/storage/xtradb/srv/srv0srv.cc:2242
#7  0x00000008013f7585 in thread_start (curthread=0x80380a800) at /usr/src/lib/libthr/thread/thr_create.c:284
#8  0x0000000000000000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffe3f2000

Thread 60 (Thread 80380ac00 (LWP 100420)):
#0  _umtx_op_err () at /usr/src/lib/libthr/arch/amd64/amd64/_umtx_op_err.S:37
#1  0x00000008013f8fb6 in _thr_umtx_timedwait_uint (mtx=0x8011f4140, id=<optimized out>, clockid=<optimized out>, abstime=<optimized out>, shared=0)
    at /usr/src/lib/libthr/thread/thr_umtx.c:212
#2  0x000000080140103e in cond_wait_user (mp=<optimized out>, abstime=<optimized out>, cancel=1, cvp=<optimized out>)
    at /usr/src/lib/libthr/thread/thr_cond.c:255
#3  cond_wait_common (cond=<optimized out>, mutex=<optimized out>, abstime=0x7ffffe1f0f10, cancel=1) at /usr/src/lib/libthr/thread/thr_cond.c:311
#4  0x0000000000845d66 in os_cond_wait_timed (abstime=0x7ffffe1f0f10, fast_mutex=0x803816440, cond=0x803816460)
    at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0sync.cc:177
#5  os_event_wait_time_low (event=0x803816440, time_in_usec=time_in_usec@entry=5000000, reset_sig_count=1)
    at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0sync.cc:705
#6  0x000000000089f61f in srv_monitor_thread (arg=<optimized out>) at /usr/local/src/mariadb-10.0.21/storage/xtradb/srv/srv0srv.cc:1978
#7  0x00000008013f7585 in thread_start (curthread=0x80380ac00) at /usr/src/lib/libthr/thread/thr_create.c:284
#8  0x0000000000000000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffe1f1000

---Type <return> to continue, or q <return> to quit---
Thread 59 (Thread 80380b000 (LWP 100421)):
#0  0x0000000802ba4baa in select () from /lib/libc.so.7
#1  0x00000008013f9c12 in __select (numfds=0, readfds=0x0, writefds=0x0, exceptfds=0x0, timeout=0x7ffffdfeff60)
    at /usr/src/lib/libthr/thread/thr_syscalls.c:561
#2  0x000000000084688b in os_thread_sleep (tm=tm@entry=1000000) at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0thread.cc:285
#3  0x00000000008a0c50 in srv_master_sleep () at /usr/local/src/mariadb-10.0.21/storage/xtradb/srv/srv0srv.cc:2970
#4  srv_master_thread (arg=<optimized out>) at /usr/local/src/mariadb-10.0.21/storage/xtradb/srv/srv0srv.cc:3018
#5  0x00000008013f7585 in thread_start (curthread=0x80380b000) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x0000000000000000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffdff0000

Thread 58 (Thread 80380b400 (LWP 100423)):
#0  _umtx_op_err () at /usr/src/lib/libthr/arch/amd64/amd64/_umtx_op_err.S:37
#1  0x00000008013f8fb6 in _thr_umtx_timedwait_uint (mtx=0x8011f4170, id=<optimized out>, clockid=<optimized out>, abstime=<optimized out>, shared=0)
    at /usr/src/lib/libthr/thread/thr_umtx.c:212
#2  0x000000080140103e in cond_wait_user (mp=<optimized out>, abstime=<optimized out>, cancel=1, cvp=<optimized out>)
    at /usr/src/lib/libthr/thread/thr_cond.c:255
#3  cond_wait_common (cond=<optimized out>, mutex=<optimized out>, abstime=0x0, cancel=1) at /usr/src/lib/libthr/thread/thr_cond.c:311
#4  0x0000000000845c21 in os_cond_wait (fast_mutex=0x8038163c0, cond=0x8038163e0) at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0sync.cc:214
#5  os_event_wait_low (event=0x8038163c0, reset_sig_count=reset_sig_count@entry=19281031)
    at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0sync.cc:592
#6  0x00000000008a1d30 in srv_purge_coordinator_suspend (rseg_history_len=<optimized out>, slot=0x80381a670)
    at /usr/local/src/mariadb-10.0.21/storage/xtradb/srv/srv0srv.cc:3329
#7  srv_purge_coordinator_thread (arg=<optimized out>) at /usr/local/src/mariadb-10.0.21/storage/xtradb/srv/srv0srv.cc:3451
#8  0x00000008013f7585 in thread_start (curthread=0x80380b400) at /usr/src/lib/libthr/thread/thr_create.c:284
#9  0x0000000000000000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffddef000

Thread 57 (Thread 80380b800 (LWP 100428)):
#0  0x0000000802ba4baa in select () from /lib/libc.so.7
#1  0x00000008013f9c12 in __select (numfds=0, readfds=0x0, writefds=0x0, exceptfds=0x0, timeout=0x7ffffdbedf00)
    at /usr/src/lib/libthr/thread/thr_syscalls.c:561
#2  0x000000000084688b in os_thread_sleep (tm=<optimized out>) at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0thread.cc:285
#3  0x00000000008fe46e in page_cleaner_sleep_if_needed (next_loop_time=next_loop_time@entry=1445844517212)
    at /usr/local/src/mariadb-10.0.21/storage/xtradb/buf/buf0flu.cc:2583
---Type <return> to continue, or q <return> to quit---
#4  0x0000000000902630 in buf_flush_page_cleaner_thread (arg=<optimized out>) at /usr/local/src/mariadb-10.0.21/storage/xtradb/buf/buf0flu.cc:2702
#5  0x00000008013f7585 in thread_start (curthread=0x80380b800) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x0000000000000000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffdbee000

Thread 56 (Thread 80380bc00 (LWP 100442)):
#0  0x0000000802ba4baa in select () from /lib/libc.so.7
#1  0x00000008013f9c12 in __select (numfds=0, readfds=0x0, writefds=0x0, exceptfds=0x0, timeout=0x7ffffd9ecf70)
    at /usr/src/lib/libthr/thread/thr_syscalls.c:561
#2  0x000000000084688b in os_thread_sleep (tm=<optimized out>) at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0thread.cc:285
#3  0x00000000008fe46e in page_cleaner_sleep_if_needed (next_loop_time=next_loop_time@entry=1445844518043)
    at /usr/local/src/mariadb-10.0.21/storage/xtradb/buf/buf0flu.cc:2583
#4  0x0000000000903524 in buf_flush_lru_manager_thread (arg=<optimized out>) at /usr/local/src/mariadb-10.0.21/storage/xtradb/buf/buf0flu.cc:2854
#5  0x00000008013f7585 in thread_start (curthread=0x80380bc00) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x0000000000000000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffd9ed000

Thread 55 (Thread 80380c000 (LWP 100443)):
#0  _umtx_op_err () at /usr/src/lib/libthr/arch/amd64/amd64/_umtx_op_err.S:37
#1  0x00000008013f8fb6 in _thr_umtx_timedwait_uint (mtx=0x8011f41b8, id=<optimized out>, clockid=<optimized out>, abstime=<optimized out>, shared=0)
    at /usr/src/lib/libthr/thread/thr_umtx.c:212
#2  0x000000080140103e in cond_wait_user (mp=<optimized out>, abstime=<optimized out>, cancel=1, cvp=<optimized out>)
    at /usr/src/lib/libthr/thread/thr_cond.c:255
#3  cond_wait_common (cond=<optimized out>, mutex=<optimized out>, abstime=0x0, cancel=1) at /usr/src/lib/libthr/thread/thr_cond.c:311
#4  0x0000000000845c21 in os_cond_wait (fast_mutex=0x803816480, cond=0x8038164a0) at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0sync.cc:214
#5  os_event_wait_low (event=0x803816480, reset_sig_count=1, reset_sig_count@entry=0) at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0sync.cc:592
#6  0x00000000008fe37e in buf_dump_thread (arg=<optimized out>) at /usr/local/src/mariadb-10.0.21/storage/xtradb/buf/buf0dump.cc:594
#7  0x00000008013f7585 in thread_start (curthread=0x80380c000) at /usr/src/lib/libthr/thread/thr_create.c:284
#8  0x0000000000000000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffd7ec000

Thread 54 (Thread 80380c400 (LWP 100448)):
#0  _umtx_op_err () at /usr/src/lib/libthr/arch/amd64/amd64/_umtx_op_err.S:37
#1  0x00000008013f8fb6 in _thr_umtx_timedwait_uint (mtx=0x8011f41d0, id=<optimized out>, clockid=<optimized out>, abstime=<optimized out>, shared=0)
    at /usr/src/lib/libthr/thread/thr_umtx.c:212
---Type <return> to continue, or q <return> to quit---
#2  0x000000080140103e in cond_wait_user (mp=<optimized out>, abstime=<optimized out>, cancel=1, cvp=<optimized out>)
    at /usr/src/lib/libthr/thread/thr_cond.c:255
#3  cond_wait_common (cond=<optimized out>, mutex=<optimized out>, abstime=0x7ffffd5eaef0, cancel=1) at /usr/src/lib/libthr/thread/thr_cond.c:311
#4  0x0000000000845d66 in os_cond_wait_timed (abstime=0x7ffffd5eaef0, fast_mutex=0x120e9c14c0, cond=0x120e9c14e0)
    at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0sync.cc:177
#5  os_event_wait_time_low (event=0x120e9c14c0, time_in_usec=time_in_usec@entry=10000000, reset_sig_count=26641, reset_sig_count@entry=0)
    at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0sync.cc:705
#6  0x0000000000932193 in dict_stats_thread (arg=<optimized out>) at /usr/local/src/mariadb-10.0.21/storage/xtradb/dict/dict0stats_bg.cc:349
#7  0x00000008013f7585 in thread_start (curthread=0x80380c400) at /usr/src/lib/libthr/thread/thr_create.c:284
#8  0x0000000000000000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffd5eb000

Thread 53 (Thread 80380c800 (LWP 100452)):
#0  _umtx_op_err () at /usr/src/lib/libthr/arch/amd64/amd64/_umtx_op_err.S:37
#1  0x00000008013f8fb6 in _thr_umtx_timedwait_uint (mtx=0x8011f41e8, id=<optimized out>, clockid=<optimized out>, abstime=<optimized out>, shared=0)
    at /usr/src/lib/libthr/thread/thr_umtx.c:212
#2  0x000000080140103e in cond_wait_user (mp=<optimized out>, abstime=<optimized out>, cancel=1, cvp=<optimized out>)
    at /usr/src/lib/libthr/thread/thr_cond.c:255
#3  cond_wait_common (cond=<optimized out>, mutex=<optimized out>, abstime=0x7ffffd3e9ea0, cancel=1) at /usr/src/lib/libthr/thread/thr_cond.c:311
#4  0x0000000000845d66 in os_cond_wait_timed (abstime=0x7ffffd3e9ea0, fast_mutex=0x12656f74c0, cond=0x12656f74e0)
    at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0sync.cc:177
#5  os_event_wait_time_low (event=0x12656f74c0, time_in_usec=time_in_usec@entry=5000000, reset_sig_count=reset_sig_count@entry=1)
    at /usr/local/src/mariadb-10.0.21/storage/xtradb/os/os0sync.cc:705
#6  0x00000000008c698e in ib_wqueue_timedwait (wq=wq@entry=0x8039051e8, wait_in_usecs=wait_in_usecs@entry=5000000)
    at /usr/local/src/mariadb-10.0.21/storage/xtradb/ut/ut0wqueue.cc:154
#7  0x0000000000961876 in fts_optimize_thread (arg=0x8039051e8) at /usr/local/src/mariadb-10.0.21/storage/xtradb/fts/fts0opt.cc:3000
#8  0x00000008013f7585 in thread_start (curthread=0x80380c800) at /usr/src/lib/libthr/thread/thr_create.c:284
#9  0x0000000000000000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffd3ea000

Thread 52 (Thread 80380cc00 (LWP 100458)):
#0  _umtx_op_err () at /usr/src/lib/libthr/arch/amd64/amd64/_umtx_op_err.S:37
#1  0x00000008013f8fb6 in _thr_umtx_timedwait_uint (mtx=0x8011f4200, id=<optimized out>, clockid=<optimized out>, abstime=<optimized out>, shared=0)
    at /usr/src/lib/libthr/thread/thr_umtx.c:212
#2  0x000000080140103e in cond_wait_user (mp=<optimized out>, abstime=<optimized out>, cancel=1, cvp=<optimized out>)
---Type <return> to continue, or q <return> to quit---
    at /usr/src/lib/libthr/thread/thr_cond.c:255
#3  cond_wait_common (cond=<optimized out>, mutex=<optimized out>, abstime=0x7ffffd1e8ed0, cancel=1) at /usr/src/lib/libthr/thread/thr_cond.c:311
#4  0x00000000009cf61e in inline_mysql_cond_timedwait (src_file=0xc3d568 "/usr/local/src/mariadb-10.0.21/storage/maria/ma_servicethread.c", 
    src_line=119, abstime=0x7ffffd1e8ed0, mutex=0x1aca100 <LOCK_checkpoint>, that=0x1aca0f0 <COND_checkpoint>)
    at /usr/local/src/mariadb-10.0.21/include/mysql/psi/mysql_thread.h:1202
#5  my_service_thread_sleep (control=control@entry=0x1213120 <checkpoint_control>, sleep_time=<optimized out>)
    at /usr/local/src/mariadb-10.0.21/storage/maria/ma_servicethread.c:118
#6  0x00000000009c9655 in ma_checkpoint_background (arg=0x1e) at /usr/local/src/mariadb-10.0.21/storage/maria/ma_checkpoint.c:709
#7  0x00000008013f7585 in thread_start (curthread=0x80380cc00) at /usr/src/lib/libthr/thread/thr_create.c:284
#8  0x0000000000000000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffd1e9000

Thread 51 (Thread 80380e400 (LWP 100473)):
#0  _umtx_op_err () at /usr/src/lib/libthr/arch/amd64/amd64/_umtx_op_err.S:37
#1  0x00000008013f8fb6 in _thr_umtx_timedwait_uint (mtx=0x8011f4218, id=<optimized out>, clockid=<optimized out>, abstime=<optimized out>, shared=0)
    at /usr/src/lib/libthr/thread/thr_umtx.c:212
#2  0x000000080140103e in cond_wait_user (mp=<optimized out>, abstime=<optimized out>, cancel=1, cvp=<optimized out>)
    at /usr/src/lib/libthr/thread/thr_cond.c:255
#3  cond_wait_common (cond=<optimized out>, mutex=<optimized out>, abstime=0x7ffffcfe7f30, cancel=1) at /usr/src/lib/libthr/thread/thr_cond.c:311
#4  0x00000000006ac320 in inline_mysql_cond_timedwait (src_file=0xb52298 "/usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc", src_line=513, 
    abstime=0x7ffffcfe7f30, mutex=0x129e4a0 <pool_timer>, that=0x129e4b0 <pool_timer+16>)
    at /usr/local/src/mariadb-10.0.21/include/mysql/psi/mysql_thread.h:1202
#5  timer_thread (param=0x129e4a0 <pool_timer>) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:513
#6  0x00000008013f7585 in thread_start (curthread=0x80380e400) at /usr/src/lib/libthr/thread/thr_create.c:284
#7  0x0000000000000000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffcfe8000

Thread 50 (Thread 80380e800 (LWP 100475)):
#0  0x0000000802acca8a in _sigwait () from /lib/libc.so.7
#1  0x00000008013fc481 in ___sigwait (set=0x7ffffcde6f10, sig=0x7ffffcde6f20) at /usr/src/lib/libthr/thread/thr_sig.c:718
#2  0x0000000000521540 in signal_hand (arg=<optimized out>) at /usr/local/src/mariadb-10.0.21/sql/mysqld.cc:3346
#3  0x00000008013f7585 in thread_start (curthread=0x80380e800) at /usr/src/lib/libthr/thread/thr_create.c:284
#4  0x0000000000000000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffcde7000

---Type <return> to continue, or q <return> to quit---
Thread 49 (Thread 1257c1a400 (LWP 100889)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=29, events=events@entry=0x7ffffc9c4e30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657dfe08, current_thread=0x7ffffc9ccf40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffc9ccf40, thread_group=thread_group@entry=0x12657dfe08, 
    abstime=abstime@entry=0x7ffffc9ccf00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657dfe08) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x1257c1a400) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffc99c000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffc9cd000

Thread 48 (Thread 124e41a400 (LWP 101354)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=68, events=events@entry=0x7ffffc320e30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e4c08, current_thread=0x7ffffc328f40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffc328f40, thread_group=thread_group@entry=0x12657e4c08, 
    abstime=abstime@entry=0x7ffffc328f00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e4c08) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x124e41a400) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffc2f8000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffc329000

Thread 47 (Thread 1247795000 (LWP 100852)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=37, events=events@entry=0x7ffffc096e30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e0e08, current_thread=0x7ffffc09ef40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffc09ef40, thread_group=thread_group@entry=0x12657e0e08, 
    abstime=abstime@entry=0x7ffffc09ef00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e0e08) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
---Type <return> to continue, or q <return> to quit---
#5  0x00000008013f7585 in thread_start (curthread=0x1247795000) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffc06e000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffc09f000

Thread 46 (Thread 125b81a800 (LWP 100358)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=69, events=events@entry=0x7ffffcbeae30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e4e08, current_thread=0x7ffffcbf2f40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffcbf2f40, thread_group=thread_group@entry=0x12657e4e08, 
    abstime=abstime@entry=0x7ffffcbf2f00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e4e08) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x125b81a800) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffcbc2000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffcbf3000

Thread 45 (Thread 125bc1a400 (LWP 101231)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=25, events=events@entry=0x7ffffcc4ee30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657df608, current_thread=0x7ffffcc56f40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffcc56f40, thread_group=thread_group@entry=0x12657df608, 
    abstime=abstime@entry=0x7ffffcc56f00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657df608) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x125bc1a400) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffcc26000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffcc57000

Thread 44 (Thread 124d41a400 (LWP 101418)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=58, events=events@entry=0x7ffffb79ae30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e3808, current_thread=0x7ffffb7a2f40)
---Type <return> to continue, or q <return> to quit---
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffb7a2f40, thread_group=thread_group@entry=0x12657e3808, 
    abstime=abstime@entry=0x7ffffb7a2f00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e3808) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x124d41a400) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffb772000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffb7a3000

Thread 43 (Thread 125281a400 (LWP 101444)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=47, events=events@entry=0x7ffffc1f4e30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e2208, current_thread=0x7ffffc1fcf40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffc1fcf40, thread_group=thread_group@entry=0x12657e2208, 
    abstime=abstime@entry=0x7ffffc1fcf00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e2208) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x125281a400) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffc1cc000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffc1fd000

Thread 42 (Thread 124bc1d000 (LWP 101572)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=27, events=events@entry=0x7ffffbbb4e30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657dfa08, current_thread=0x7ffffbbbcf40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffbbbcf40, thread_group=thread_group@entry=0x12657dfa08, 
    abstime=abstime@entry=0x7ffffbbbcf00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657dfa08) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x124bc1d000) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffbb8c000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffbbbd000

Thread 41 (Thread 1247798400 (LWP 101029)):
---Type <return> to continue, or q <return> to quit---
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=32, events=events@entry=0x7ffffb704e30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e0408, current_thread=0x7ffffb70cf40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffb70cf40, thread_group=thread_group@entry=0x12657e0408, 
    abstime=abstime@entry=0x7ffffb70cf00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e0408) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x1247798400) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffb6dc000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffb70d000

Thread 40 (Thread 1259c1a400 (LWP 101236)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=34, events=events@entry=0x7ffffb380e30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e0808, current_thread=0x7ffffb388f40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffb388f40, thread_group=thread_group@entry=0x12657e0808, 
    abstime=abstime@entry=0x7ffffb388f00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e0808) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x1259c1a400) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffb358000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffb389000

Thread 39 (Thread 1247797800 (LWP 101375)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=67, events=events@entry=0x7ffffcc80e30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e4a08, current_thread=0x7ffffcc88f40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffcc88f40, thread_group=thread_group@entry=0x12657e4a08, 
    abstime=abstime@entry=0x7ffffcc88f00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e4a08) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x1247797800) at /usr/src/lib/libthr/thread/thr_create.c:284
---Type <return> to continue, or q <return> to quit---
#6  0x00007ffffcc58000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffcc89000

Thread 38 (Thread 125341a400 (LWP 101565)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=26, events=events@entry=0x7ffffcaf0e30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657df808, current_thread=0x7ffffcaf8f40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffcaf8f40, thread_group=thread_group@entry=0x12657df808, 
    abstime=abstime@entry=0x7ffffcaf8f00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657df808) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x125341a400) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffcac8000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffcaf9000

Thread 37 (Thread 124778f400 (LWP 100304)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=24, events=events@entry=0x7ffffb7cce30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657df408, current_thread=0x7ffffb7d4f40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffb7d4f40, thread_group=thread_group@entry=0x12657df408, 
    abstime=abstime@entry=0x7ffffb7d4f00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657df408) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x124778f400) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffb7a4000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffb7d5000

Thread 36 (Thread 125c81a800 (LWP 100568)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=30, events=events@entry=0x7ffffbd12e30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e0008, current_thread=0x7ffffbd1af40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
---Type <return> to continue, or q <return> to quit---
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffbd1af40, thread_group=thread_group@entry=0x12657e0008, 
    abstime=abstime@entry=0x7ffffbd1af00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e0008) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x125c81a800) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffbcea000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffbd1b000

Thread 35 (Thread 1247798c00 (LWP 100897)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=41, events=events@entry=0x7ffffb416e30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e1608, current_thread=0x7ffffb41ef40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffb41ef40, thread_group=thread_group@entry=0x12657e1608, 
    abstime=abstime@entry=0x7ffffb41ef00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e1608) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x1247798c00) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffb3ee000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffb41f000

Thread 34 (Thread 1247790400 (LWP 100298)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=60, events=events@entry=0x7ffffc3e8e30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e3c08, current_thread=0x7ffffc3f0f40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffc3f0f40, thread_group=thread_group@entry=0x12657e3c08, 
    abstime=abstime@entry=0x7ffffc3f0f00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e3c08) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x1247790400) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffc3c0000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffc3f1000

Thread 33 (Thread 1247795400 (LWP 101098)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
---Type <return> to continue, or q <return> to quit---
#1  0x00000000006ac7ff in io_poll_wait (pollfd=49, events=events@entry=0x7ffffc1c2e30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e2608, current_thread=0x7ffffc1caf40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffc1caf40, thread_group=thread_group@entry=0x12657e2608, 
    abstime=abstime@entry=0x7ffffc1caf00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e2608) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x1247795400) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffc19a000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffc1cb000

Thread 32 (Thread 125381a400 (LWP 100958)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=43, events=events@entry=0x7ffffc672e30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e1a08, current_thread=0x7ffffc67af40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffc67af40, thread_group=thread_group@entry=0x12657e1a08, 
    abstime=abstime@entry=0x7ffffc67af00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e1a08) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x125381a400) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffc64a000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffc67b000

Thread 31 (Thread 124778ec00 (LWP 100666)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=57, events=events@entry=0x7ffffb8c6e30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e3608, current_thread=0x7ffffb8cef40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffb8cef40, thread_group=thread_group@entry=0x12657e3608, 
    abstime=abstime@entry=0x7ffffb8cef00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e3608) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x124778ec00) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffb89e000 in ?? ()
---Type <return> to continue, or q <return> to quit---
Backtrace stopped: Cannot access memory at address 0x7ffffb8cf000

Thread 30 (Thread 1255c1a800 (LWP 100755)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=39, events=events@entry=0x7ffffc960e30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e1208, current_thread=0x7ffffc968f40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffc968f40, thread_group=thread_group@entry=0x12657e1208, 
    abstime=abstime@entry=0x7ffffc968f00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e1208) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x1255c1a800) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffc938000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffc969000

Thread 29 (Thread 803813000 (LWP 100893)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=36, events=events@entry=0x7ffffc578e30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e0c08, current_thread=0x7ffffc580f40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffc580f40, thread_group=thread_group@entry=0x12657e0c08, 
    abstime=abstime@entry=0x7ffffc580f00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e0c08) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x803813000) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffc550000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffc581000

Thread 28 (Thread 124ec1a400 (LWP 101073)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=54, events=events@entry=0x7ffffb510e30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e3008, current_thread=0x7ffffb518f40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffb518f40, thread_group=thread_group@entry=0x12657e3008, 
---Type <return> to continue, or q <return> to quit---
    abstime=abstime@entry=0x7ffffb518f00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e3008) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x124ec1a400) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffb4e8000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffb519000

Thread 27 (Thread 124e41c000 (LWP 100567)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=53, events=events@entry=0x7ffffbf06e30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e2e08, current_thread=0x7ffffbf0ef40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffbf0ef40, thread_group=thread_group@entry=0x12657e2e08, 
    abstime=abstime@entry=0x7ffffbf0ef00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e2e08) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x124e41c000) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffbede000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffbf0f000

Thread 26 (Thread 1247406400 (LWP 100809)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=23, events=events@entry=0x7ffffc4b0e30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657df208, current_thread=0x7ffffc4b8f40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffc4b8f40, thread_group=thread_group@entry=0x12657df208, 
    abstime=abstime@entry=0x7ffffc4b8f00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657df208) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x1247406400) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffc488000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffc4b9000

Thread 25 (Thread 125d81b400 (LWP 101048)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=38, events=events@entry=0x7ffffcabee30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
---Type <return> to continue, or q <return> to quit---
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e1008, current_thread=0x7ffffcac6f40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffcac6f40, thread_group=thread_group@entry=0x12657e1008, 
    abstime=abstime@entry=0x7ffffcac6f00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e1008) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x125d81b400) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffca96000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffcac7000

Thread 24 (Thread 125841a400 (LWP 100997)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=66, events=events@entry=0x7ffffc60ee30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e4808, current_thread=0x7ffffc616f40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffc616f40, thread_group=thread_group@entry=0x12657e4808, 
    abstime=abstime@entry=0x7ffffc616f00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e4808) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x125841a400) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffc5e6000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffc617000

Thread 23 (Thread 124903b800 (LWP 100665)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=42, events=events@entry=0x7ffffb9f2e30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e1808, current_thread=0x7ffffb9faf40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffb9faf40, thread_group=thread_group@entry=0x12657e1808, 
    abstime=abstime@entry=0x7ffffb9faf00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e1808) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x124903b800) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffb9ca000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffb9fb000
---Type <return> to continue, or q <return> to quit---

Thread 22 (Thread 1247409000 (LWP 100921)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=44, events=events@entry=0x7ffffc2bce30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e1c08, current_thread=0x7ffffc2c4f40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffc2c4f40, thread_group=thread_group@entry=0x12657e1c08, 
    abstime=abstime@entry=0x7ffffc2c4f00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e1c08) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x1247409000) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffc294000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffc2c5000

Thread 21 (Thread 125401a400 (LWP 101151)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=48, events=events@entry=0x7ffffcce4e30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e2408, current_thread=0x7ffffccecf40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffccecf40, thread_group=thread_group@entry=0x12657e2408, 
    abstime=abstime@entry=0x7ffffccecf00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e2408) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x125401a400) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffccbc000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffcced000

Thread 20 (Thread 124c41bc00 (LWP 101222)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=50, events=events@entry=0x7ffffc6d6e30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e2808, current_thread=0x7ffffc6def40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffc6def40, thread_group=thread_group@entry=0x12657e2808, 
    abstime=abstime@entry=0x7ffffc6def00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
---Type <return> to continue, or q <return> to quit---
#4  0x00000000006acf43 in worker_main (param=0x12657e2808) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x124c41bc00) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffc6ae000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffc6df000

Thread 19 (Thread 124e057c00 (LWP 101239)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=52, events=events@entry=0x7ffffc5aae30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e2c08, current_thread=0x7ffffc5b2f40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffc5b2f40, thread_group=thread_group@entry=0x12657e2c08, 
    abstime=abstime@entry=0x7ffffc5b2f00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e2c08) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x124e057c00) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffc582000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffc5b3000

Thread 18 (Thread 125001a400 (LWP 100719)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=40, events=events@entry=0x7ffffb2eae30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e1408, current_thread=0x7ffffb2f2f40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffb2f2f40, thread_group=thread_group@entry=0x12657e1408, 
    abstime=abstime@entry=0x7ffffb2f2f00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e1408) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x125001a400) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffb2c2000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffb2f3000

Thread 17 (Thread 1254c1a800 (LWP 100810)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=55, events=events@entry=0x7ffffb862e30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
---Type <return> to continue, or q <return> to quit---
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e3208, current_thread=0x7ffffb86af40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffb86af40, thread_group=thread_group@entry=0x12657e3208, 
    abstime=abstime@entry=0x7ffffb86af00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e3208) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x1254c1a800) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffb83a000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffb86b000

Thread 16 (Thread 125981a800 (LWP 101321)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=56, events=events@entry=0x7ffffba24e30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e3408, current_thread=0x7ffffba2cf40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffba2cf40, thread_group=thread_group@entry=0x12657e3408, 
    abstime=abstime@entry=0x7ffffba2cf00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e3408) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x125981a800) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffb9fc000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffba2d000

Thread 15 (Thread 1247796000 (LWP 101077)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=51, events=events@entry=0x7ffffb95ce30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e2a08, current_thread=0x7ffffb964f40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffb964f40, thread_group=thread_group@entry=0x12657e2a08, 
    abstime=abstime@entry=0x7ffffb964f00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e2a08) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x1247796000) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffb934000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffb965000

---Type <return> to continue, or q <return> to quit---
Thread 14 (Thread 125c81a400 (LWP 100531)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=45, events=events@entry=0x7ffffba88e30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e1e08, current_thread=0x7ffffba90f40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffba90f40, thread_group=thread_group@entry=0x12657e1e08, 
    abstime=abstime@entry=0x7ffffba90f00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e1e08) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x125c81a400) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffba60000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffba91000

Thread 13 (Thread 125b01a800 (LWP 101167)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=65, events=events@entry=0x7ffffca5ae30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e4608, current_thread=0x7ffffca62f40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffca62f40, thread_group=thread_group@entry=0x12657e4608, 
    abstime=abstime@entry=0x7ffffca62f00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e4608) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x125b01a800) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffca32000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffca63000

Thread 12 (Thread 1247794000 (LWP 100757)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=61, events=events@entry=0x7ffffcc1ce30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e3e08, current_thread=0x7ffffcc24f40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffcc24f40, thread_group=thread_group@entry=0x12657e3e08, 
    abstime=abstime@entry=0x7ffffcc24f00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e3e08) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
---Type <return> to continue, or q <return> to quit---
#5  0x00000008013f7585 in thread_start (curthread=0x1247794000) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffcbf4000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffcc25000

Thread 11 (Thread 1258c1a400 (LWP 100659)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=59, events=events@entry=0x7ffffbd76e30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e3a08, current_thread=0x7ffffbd7ef40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffbd7ef40, thread_group=thread_group@entry=0x12657e3a08, 
    abstime=abstime@entry=0x7ffffbd7ef00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e3a08) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x1258c1a400) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffbd4e000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffbd7f000

Thread 10 (Thread 1247797c00 (LWP 100709)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=62, events=events@entry=0x7ffffc384e30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e4008, current_thread=0x7ffffc38cf40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffc38cf40, thread_group=thread_group@entry=0x12657e4008, 
    abstime=abstime@entry=0x7ffffc38cf00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e4008) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x1247797c00) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffc35c000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffc38d000

Thread 9 (Thread 125d01a400 (LWP 101277)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=63, events=events@entry=0x7ffffcdace30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e4208, current_thread=0x7ffffcdb4f40)
---Type <return> to continue, or q <return> to quit---
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffcdb4f40, thread_group=thread_group@entry=0x12657e4208, 
    abstime=abstime@entry=0x7ffffcdb4f00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e4208) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x125d01a400) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffcd84000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffcdb5000

Thread 8 (Thread 125fc1a400 (LWP 101410)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=64, events=events@entry=0x7ffffb6a0e30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e4408, current_thread=0x7ffffb6a8f40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffb6a8f40, thread_group=thread_group@entry=0x12657e4408, 
    abstime=abstime@entry=0x7ffffb6a8f00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e4408) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x125fc1a400) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffb678000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffb6a9000

Thread 7 (Thread 125701a400 (LWP 101582)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=22, events=events@entry=0x7ffffc92ee30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657df008, current_thread=0x7ffffc936f40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffc936f40, thread_group=thread_group@entry=0x12657df008, 
    abstime=abstime@entry=0x7ffffc936f00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657df008) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x125701a400) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffc906000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffc937000

Thread 6 (Thread 1256c1a800 (LWP 101585)):
---Type <return> to continue, or q <return> to quit---
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=28, events=events@entry=0x7ffffb894e30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657dfc08, current_thread=0x7ffffb89cf40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffb89cf40, thread_group=thread_group@entry=0x12657dfc08, 
    abstime=abstime@entry=0x7ffffb89cf00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657dfc08) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x1256c1a800) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffb86c000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffb89d000

Thread 5 (Thread 80380a000 (LWP 101587)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=31, events=events@entry=0x7ffffbbe6e30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e0208, current_thread=0x7ffffbbeef40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffbbeef40, thread_group=thread_group@entry=0x12657e0208, 
    abstime=abstime@entry=0x7ffffbbeef00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e0208) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x80380a000) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffbbbe000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffbbef000

Thread 4 (Thread 1257c1a800 (LWP 101588)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=33, events=events@entry=0x7ffffb542e30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e0608, current_thread=0x7ffffb54af40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffb54af40, thread_group=thread_group@entry=0x12657e0608, 
    abstime=abstime@entry=0x7ffffb54af00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e0608) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x1257c1a800) at /usr/src/lib/libthr/thread/thr_create.c:284
---Type <return> to continue, or q <return> to quit---
#6  0x00007ffffb51a000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffb54b000

Thread 3 (Thread 125b81a400 (LWP 101589)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=35, events=events@entry=0x7ffffb98ee30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e0a08, current_thread=0x7ffffb996f40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffb996f40, thread_group=thread_group@entry=0x12657e0a08, 
    abstime=abstime@entry=0x7ffffb996f00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e0a08) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x125b81a400) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffb966000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffb997000

Thread 2 (Thread 1247408c00 (LWP 101605)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=46, events=events@entry=0x7ffffc76ce30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e2008, current_thread=0x7ffffc774f40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffc774f40, thread_group=thread_group@entry=0x12657e2008, 
    abstime=abstime@entry=0x7ffffc774f00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e2008) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x1247408c00) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffc744000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffc775000

Thread 1 (Thread 1247408c00 (LWP 101605)):
#0  0x0000000802b8404a in kevent () from /lib/libc.so.7
#1  0x00000000006ac7ff in io_poll_wait (pollfd=46, events=events@entry=0x7ffffc76ce30, maxevents=maxevents@entry=1024, timeout_ms=timeout_ms@entry=-1)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:354
#2  0x00000000006ac867 in listener (thread_group=thread_group@entry=0x12657e2008, current_thread=0x7ffffc774f40)
    at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:650
---Type <return> to continue, or q <return> to quit---
#3  0x00000000006ace02 in get_event (current_thread=current_thread@entry=0x7ffffc774f40, thread_group=thread_group@entry=0x12657e2008, 
    abstime=abstime@entry=0x7ffffc774f00) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1092
#4  0x00000000006acf43 in worker_main (param=0x12657e2008) at /usr/local/src/mariadb-10.0.21/sql/threadpool_unix.cc:1492
#5  0x00000008013f7585 in thread_start (curthread=0x1247408c00) at /usr/src/lib/libthr/thread/thr_create.c:284
#6  0x00007ffffc744000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7ffffc775000
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