(gdb) +thread apply all bt

Thread 54 (LWP 8912):
+bt
#0  0x0000003636edc7d7 in unlink () from /lib64/libc.so.6
#1  0x000000000098cb91 in os_file_delete_if_exists_func (name=0x7f2e180441d8 "./transforms/trigger28917.cfg") at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:1899
#2  0x0000000000a92ecf in pfs_os_file_delete_if_exists_func (src_line=2759, name=0x7f2e180441d8 "./transforms/trigger28917.cfg", key=<optimized out>, src_file=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/include/os0file.ic:446
#3  fil_delete_tablespace (id=55, buf_remove=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/fil/fil0fil.cc:2759
#4  0x00000000009d4e76 in row_drop_table_for_mysql (name=0x7f2e80159c00 "\220\234\025\200.\177", trx=<optimized out>, drop_db=<optimized out>, nonatomic=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/row/row0mysql.cc:4242
#5  0x0000000000946d2d in ha_innobase::delete_table (this=<optimized out>, name=0x7f2e8015afe0 "./transforms/trigger28917") at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/handler/ha_innodb.cc:10414
#6  0x00000000005b0025 in ha_delete_table (thd=0x28cd9a0, table_type=<optimized out>, path=<optimized out>, db=0x7f2e1800c4a0 "transforms", alias=0x7f2e1800c4b0 "trigger28917", generate_warning=true) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/handler.cc:2349
#7  0x00000000007333e6 in mysql_rm_table_no_locks (thd=0x28cd9a0, tables=0x7f2e1800bf38, if_exists=true, drop_temporary=false, drop_view=false, dont_log_query=false) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_table.cc:2467
#8  0x00000000007341ed in mysql_rm_table (thd=0x28cd9a0, tables=0x7f2e1800bf38, if_exists=1 '\001', drop_temporary=0 '\000') at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_table.cc:2163
#9  0x00000000006e4290 in mysql_execute_command (thd=0x28cd9a0) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:3846
#10 0x00000000006e6b88 in mysql_parse (thd=0x28cd9a0, rawbuf=<optimized out>, length=42794288, parser_state=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:6477
#11 0x00000000006e7a31 in dispatch_command (command=COM_QUERY, thd=0x28cd9a0, packet=0x7f2e8015ca30 "\240ٌ\002", packet_length=59) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:1355
#12 0x0000000000781abf in threadpool_process_request (thd=0x28cd9a0) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_common.cc:312
#13 0x0000000000783e68 in handle_event (connection=0x28b0e00) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1466
#14 worker_main (param=0x12f0400 <all_groups>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1519
#15 0x00000000009220fa in pfs_spawn_thread (arg=0x28de900) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#16 0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#17 0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 53 (LWP 8869):
+bt
#0  0x000000363720ec0d in fsync () from /lib64/libpthread.so.0
#1  0x00000000008d53d0 in my_sync (fd=50, my_flags=48) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/mysys/my_sync.c:76
#2  0x00000000008d5509 in my_sync_dir (dir_name=<optimized out>, my_flags=16) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/mysys/my_sync.c:146
#3  0x00000000008d5577 in my_sync_dir_by_file (file_name=<optimized out>, my_flags=16) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/mysys/my_sync.c:186
#4  0x000000000078144e in mysql_create_frm (thd=0x0, file_name=0x7f2e8890e020 "./transforms/where_subselect_8910.frm", db=0x7f2e540138f0 "./transforms/", table=0x0, create_info=<optimized out>, create_fields=..., keys=0, key_info=0x7f2e540026c0, db_file=0x7f2e540009a0) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/unireg.cc:444
#5  0x0000000000781644 in rea_create_table (thd=0x28c6e40, path=0x7f2e8890f1d0 "./transforms/where_subselect_8910", db=0x7f2e54017ac0 "transforms", table_name=0x7f2e54017ad0 "where_subselect_8910", create_info=0x7f2e88910a40, create_fields=..., keys=0, key_info=0x7f2e540026c0, file=0x7f2e540009a0, no_ha_table=false) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/unireg.cc:512
#6  0x00000000007315a7 in create_table_impl (thd=0x28c6e40, db=0x7f2e54017ac0 "transforms", table_name=0x7f2e54017ad0 "where_subselect_8910", path=0x7f2e8890f1d0 "./transforms/where_subselect_8910", create_info=0x7f2e88910a40, alter_info=0x7f2e88910450, internal_tmp_table=false, select_field_count=1, no_ha_table=false, is_trans=0x0, key_info=0x7f2e8890f3e0, key_count=0x7f2e8890f3e8) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_table.cc:4847
#7  0x0000000000731c27 in mysql_create_table_no_lock (thd=0x28c6e40, db=0x7f2e54017ac0 "transforms", table_name=0x7f2e54017ad0 "where_subselect_8910", create_info=0x7f2e88910a40, alter_info=0x7f2e88910450, select_field_count=1, is_trans=0x0) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_table.cc:4959
#8  0x00000000006c6274 in create_table_from_items (thd=0x28c6e40, create_info=0x7f2e88910a40, create_table=0x7f2e54017b28, alter_info=0x7f2e88910450, items=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_insert.cc:4050
#9  0x00000000006c63e2 in select_create::prepare (this=<optimized out>, values=..., u=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_insert.cc:4118
#10 0x00000000006fe1ba in JOIN::prepare (this=0x7f2e54019350, tables_init=<optimized out>, wild_num=<optimized out>, conds_init=<optimized out>, og_num=1409390232, order_init=<optimized out>, group_init=0x0, having_init=0x0, select_lex_arg=0x28c98e0, unit_arg=0x28c9298) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_resolver.cc:335
#11 0x0000000000705460 in mysql_prepare_select (free_join=<optimized out>, select_lex=0x28c98e0, unit=0x28c9298, result=0x7f2e540191d0, select_options=2953054976, having=0x0, group=0x0, order=0x0, og_num=<optimized out>, conds=0x0, fields=..., wild_num=0, tables=0x7f2e540182f0, thd=0x28c6e40) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_select.cc:1055
#12 mysql_select (thd=0x28c6e40, tables=0x7f2e540182f0, wild_num=0, fields=..., conds=0x0, order=<optimized out>, group=0x28c99e0, having=0x0, select_options=2953054976, result=0x7f2e540191d0, unit=0x28c9298, select_lex=0x28c98e0) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_select.cc:1178
#13 0x00000000007056a7 in handle_select (thd=0x28c6e40, result=0x7f2e540191d0, setup_tables_done_option=0) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_select.cc:111
#14 0x00000000006e600a in mysql_execute_command (thd=0x28c6e40) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:3245
#15 0x00000000006e6b88 in mysql_parse (thd=0x28c6e40, rawbuf=<optimized out>, length=42766800, parser_state=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:6477
#16 0x00000000006e7a31 in dispatch_command (command=COM_QUERY, thd=0x28c6e40, packet=0x7f2e88911a30 "@n\214\002", packet_length=96) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:1355
#17 0x0000000000781abf in threadpool_process_request (thd=0x28c6e40) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_common.cc:312
#18 0x0000000000783e68 in handle_event (connection=0x28b0f20) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1466
#19 worker_main (param=0x12f0a00 <all_groups+1536>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1519
#20 0x00000000009220fa in pfs_spawn_thread (arg=0x28d4320) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#21 0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#22 0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 52 (LWP 8851):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00000000009919b3 in os_cond_wait (fast_mutex=0x2780a10, cond=0x2780a50) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  os_event_wait_low (event=0x2780a10, reset_sig_count=109) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x00000000009feb44 in sync_array_wait_event (arr=0x23b5c50, index=1) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/sync/sync0arr.cc:424
#4  0x00000000009fef71 in rw_lock_s_lock_spin (lock=0x132ad00 <dict_operation_lock>, pass=<optimized out>, file_name=0xc01cf0 "/bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/row/row0purge.cc", line=720) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/sync/sync0rw.cc:443
#5  0x00000000009ddd66 in pfs_rw_lock_s_lock_func (line=720, lock=<optimized out>, pass=<optimized out>, file_name=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/include/sync0rw.ic:685
#6  row_purge_parse_undo_rec (thr=0x27a2a88, updated_extern=0x7f2e85b65b6f, undo_rec=0x27a35e8 "\v\261\016\002\020", node=0x27a2b48) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/row/row0purge.cc:720
#7  row_purge (thr=0x27a2a88, undo_rec=0x27a35e8 "\v\261\016\002\020", node=0x27a2b48) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/row/row0purge.cc:859
#8  row_purge_step (thr=0x27a2a88) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/row/row0purge.cc:942
#9  0x00000000009adfc6 in que_thr_step (thr=0x27a2a88) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/que/que0que.cc:1115
#10 que_run_threads_low (thr=0x27a2a88) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/que/que0que.cc:1177
#11 que_run_threads (thr=0x27a2a88) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/que/que0que.cc:1218
#12 0x0000000000a064bd in trx_purge (n_purge_threads=4, batch_size=300, truncate=false) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/trx/trx0purge.cc:1251
#13 0x00000000009f724f in srv_do_purge (n_total_purged=<optimized out>, n_threads=4) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3108
#14 srv_purge_coordinator_thread (arg=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3285
#15 0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#16 0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 51 (LWP 8854):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00000000009919b3 in os_cond_wait (fast_mutex=0x23b6ac0, cond=0x23b6b00) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  os_event_wait_low (event=0x23b6ac0, reset_sig_count=3280) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x00000000009f7ec0 in srv_worker_thread (arg=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3006
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 50 (LWP 8844):
+bt
#0  0x0000003636a00614 in ?? () from /lib64/libaio.so.1
#1  0x000000000098df6b in os_aio_linux_collect (seg_size=256, segment=<optimized out>, array=0x23f4f50) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5090
#2  os_aio_linux_handle (global_seg=8, message1=0x7f2e89e17d98, message2=0x7f2e89e17d90, type=0x7f2e89e17d88, space_id=0x7f2e89e17d80) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5235
#3  0x0000000000a90b78 in fil_aio_wait (segment=8) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/fil/fil0fil.cc:5577
#4  0x00000000009f9018 in io_handler_thread (arg=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0start.cc:479
#5  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#6  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 49 (LWP 8853):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00000000009919b3 in os_cond_wait (fast_mutex=0x23b6a30, cond=0x23b6a70) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  os_event_wait_low (event=0x23b6a30, reset_sig_count=3774) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x00000000009f7ec0 in srv_worker_thread (arg=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3006
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 48 (LWP 8856):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00000000009919b3 in os_cond_wait (fast_mutex=0x23b6c70, cond=0x23b6cb0) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  os_event_wait_low (event=0x23b6c70, reset_sig_count=1) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x0000000000a59a1c in buf_dump_thread (arg=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/buf/buf0dump.cc:594
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 47 (LWP 8888):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00000000009919b3 in os_cond_wait (fast_mutex=0x2780a10, cond=0x2780a50) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  os_event_wait_low (event=0x2780a10, reset_sig_count=109) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x00000000009feb44 in sync_array_wait_event (arr=0x23b5c50, index=0) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/sync/sync0arr.cc:424
#4  0x00000000009ff54e in rw_lock_x_lock_func (lock=0x132ad00 <dict_operation_lock>, pass=0, file_name=0xbfe308 "/bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/row/row0mysql.cc", line=3761) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/sync/sync0rw.cc:710
#5  0x00000000009d02f4 in pfs_rw_lock_x_lock_func (line=3761, file_name=0xbfe308 "/bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/row/row0mysql.cc", lock=<optimized out>, pass=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/include/sync0rw.ic:594
#6  row_mysql_lock_data_dictionary_func (trx=0x7f2e3801bed8, line=3761, file=0xbfe308 "/bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/row/row0mysql.cc") at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/row/row0mysql.cc:2097
#7  0x00000000009d424c in row_drop_table_for_mysql (name=0x7f2e887c9c50 "transforms/where_subselect_8918", trx=0x7f2e3801bed8, drop_db=false, nonatomic=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/row/row0mysql.cc:3761
#8  0x0000000000946d2d in ha_innobase::delete_table (this=<optimized out>, name=0x7f2e887cafe0 "./transforms/where_subselect_8918") at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/handler/ha_innodb.cc:10414
#9  0x00000000005b0025 in ha_delete_table (thd=0x2827e10, table_type=<optimized out>, path=<optimized out>, db=0x7f2e2800bed0 "transforms", alias=0x7f2e2800bee0 "where_subselect_8918", generate_warning=true) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/handler.cc:2349
#10 0x00000000007333e6 in mysql_rm_table_no_locks (thd=0x2827e10, tables=0x7f2e2800bf38, if_exists=false, drop_temporary=false, drop_view=false, dont_log_query=false) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_table.cc:2467
#11 0x00000000007341ed in mysql_rm_table (thd=0x2827e10, tables=0x7f2e2800bf38, if_exists=0 '\000', drop_temporary=0 '\000') at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_table.cc:2163
#12 0x00000000006e4290 in mysql_execute_command (thd=0x2827e10) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:3846
#13 0x00000000006e6b88 in mysql_parse (thd=0x2827e10, rawbuf=<optimized out>, length=42115488, parser_state=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:6477
#14 0x00000000006e7a31 in dispatch_command (command=COM_QUERY, thd=0x2827e10, packet=0x7f2e887cca30 "\020~\202\002", packet_length=42) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:1355
#15 0x0000000000781abf in threadpool_process_request (thd=0x2827e10) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_common.cc:312
#16 0x0000000000783e68 in handle_event (connection=0x28c6c40) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1466
#17 worker_main (param=0x12f0600 <all_groups+512>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1519
#18 0x00000000009220fa in pfs_spawn_thread (arg=0x2847580) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#19 0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#20 0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 46 (LWP 8855):
+bt
#0  0x0000003636ee14f3 in select () from /lib64/libc.so.6
#1  0x00000000009926af in os_thread_sleep (tm=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0thread.cc:255
#2  0x0000000000a5e671 in page_cleaner_sleep_if_needed (next_loop_time=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/buf/buf0flu.cc:2415
#3  buf_flush_page_cleaner_thread (arg=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/buf/buf0flu.cc:2456
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 45 (LWP 8880):
+bt
#0  0x000000363720b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000783086 in inline_mysql_cond_timedwait (src_line=1131, abstime=0x7f2e8884ed60, mutex=0x12f1200 <all_groups+3584>, that=0x7f2e8884ecf0, src_file=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/include/mysql/psi/mysql_thread.h:1199
#2  get_event (current_thread=0x7f2e8884ecd0, thread_group=0x12f1200 <all_groups+3584>, abstime=0x7f2e8884ed60) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1131
#3  0x0000000000783b76 in worker_main (param=0x12f1200 <all_groups+3584>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1515
#4  0x00000000009220fa in pfs_spawn_thread (arg=0x28b4480) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#5  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#6  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 44 (LWP 8858):
+bt
#0  0x000000363720b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x000000000099211b in os_cond_wait_timed (abstime=0x7f2e8155ec90, fast_mutex=0x27af4d0, cond=0x27af510) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:177
#2  os_event_wait_time_low (event=0x27af4d0, time_in_usec=<optimized out>, reset_sig_count=1) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:723
#3  0x0000000000a236f2 in ib_wqueue_timedwait (wq=0x27af3d8, wait_in_usecs=5000000) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/ut/ut0wqueue.cc:154
#4  0x0000000000aba9db in fts_optimize_thread (arg=0x27af3d8) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/fts/fts0opt.cc:2972
#5  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#6  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 43 (LWP 8857):
+bt
#0  0x000000363720b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x000000000099211b in os_cond_wait_timed (abstime=0x7f2e81f5fd00, fast_mutex=0x277eec0, cond=0x277ef00) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:177
#2  os_event_wait_time_low (event=0x277eec0, time_in_usec=<optimized out>, reset_sig_count=23) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:723
#3  0x0000000000a8d3f7 in dict_stats_thread (arg=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/dict/dict0stats_bg.cc:349
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 42 (LWP 8884):
+bt
#0  0x0000003636ee8f03 in epoll_wait () from /lib64/libc.so.6
#1  0x0000000000782417 in io_poll_wait (pollfd=13, native_events=0x7f2e8880ab60, maxevents=1024, timeout_ms=-1) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:281
#2  0x0000000000782905 in listener (current_thread=<optimized out>, thread_group=0x12f0400 <all_groups>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:643
#3  0x0000000000783134 in get_event (current_thread=0x7f2e8880dcd0, thread_group=0x12f0400 <all_groups>, abstime=0x7f2e8880dd60) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1093
#4  0x0000000000783b76 in worker_main (param=0x12f0400 <all_groups>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1515
#5  0x00000000009220fa in pfs_spawn_thread (arg=0x28de900) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#6  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#7  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 41 (LWP 8847):
+bt
#0  0x000000363720b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x000000000099211b in os_cond_wait_timed (abstime=0x7f2e87968d00, fast_mutex=0x2778940, cond=0x2778980) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:177
#2  os_event_wait_time_low (event=0x2778940, time_in_usec=<optimized out>, reset_sig_count=3) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:723
#3  0x00000000009732b1 in lock_wait_timeout_thread (arg=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/lock/lock0wait.cc:503
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 40 (LWP 8860):
+bt
#0  0x000000363720f2a5 in sigwait () from /lib64/libpthread.so.0
#1  0x000000000059c36b in signal_hand (arg=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/mysqld.cc:3171
#2  0x00000000009220fa in pfs_spawn_thread (arg=0x27d3e70) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#3  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#4  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 39 (LWP 8940):
+bt
#0  0x000000363720b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000783086 in inline_mysql_cond_timedwait (src_line=1131, abstime=0x7f2e5befad60, mutex=0x12f0800 <all_groups+1024>, that=0x7f2e5befacf0, src_file=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/include/mysql/psi/mysql_thread.h:1199
#2  get_event (current_thread=0x7f2e5befacd0, thread_group=0x12f0800 <all_groups+1024>, abstime=0x7f2e5befad60) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1131
#3  0x0000000000783b76 in worker_main (param=0x12f0800 <all_groups+1024>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1515
#4  0x00000000009220fa in pfs_spawn_thread (arg=0x7f2e00001050) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#5  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#6  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 38 (LWP 8913):
+bt
#0  0x000000363720e054 in __lll_lock_wait () from /lib64/libpthread.so.0
#1  0x00000036372093be in _L_lock_995 () from /lib64/libpthread.so.0
#2  0x0000003637209326 in pthread_mutex_lock () from /lib64/libpthread.so.0
#3  0x000000000069b900 in inline_mysql_mutex_lock (src_line=115, src_file=0xb72c30 "/bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/table_cache.h", that=0x0) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/include/mysql/psi/mysql_thread.h:688
#4  lock (this=0x12ed5a0 <table_cache_manager>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/table_cache.h:115
#5  open_table (thd=0x2933d00, table_list=0x7f2e1c017c50, ot_ctx=0x7f2e8011a290) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_base.cc:2884
#6  0x000000000069dcc2 in open_and_process_table (ot_ctx=0x7f2e8011a290, has_prelocking_list=false, prelocking_strategy=0x7f2e8011a350, flags=0, counter=0x2936148, tables=0x7f2e1c017c50, lex=0x2936090, thd=0x2933d00) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_base.cc:4592
#7  open_tables (thd=0x2933d00, start=0x7f2e8011a338, counter=0x2936148, flags=0, prelocking_strategy=0x7f2e8011a350) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_base.cc:5099
#8  0x000000000069dddf in open_normal_and_derived_tables (thd=<optimized out>, tables=0x7f2e30004f18, flags=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_base.cc:5798
#9  0x00000000006e02f1 in execute_sqlcom_select (thd=0x2933d00, all_tables=0x7f2e30004f18) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:5278
#10 0x00000000006e2f88 in mysql_execute_command (thd=0x2933d00) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:2762
#11 0x00000000006e6b88 in mysql_parse (thd=0x2933d00, rawbuf=<optimized out>, length=43212944, parser_state=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:6477
#12 0x00000000006e7a31 in dispatch_command (command=COM_QUERY, thd=0x2933d00, packet=0x7f2e8011ba30 "", packet_length=84) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:1355
#13 0x0000000000781abf in threadpool_process_request (thd=0x2933d00) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_common.cc:312
#14 0x0000000000783e68 in handle_event (connection=0x28fdc90) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1466
#15 worker_main (param=0x12f0c00 <all_groups+2048>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1519
#16 0x00000000009220fa in pfs_spawn_thread (arg=0x287fd10) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#17 0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#18 0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 37 (LWP 8877):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00000000009919b3 in os_cond_wait (fast_mutex=0x2780800, cond=0x2780840) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  os_event_wait_low (event=0x2780800, reset_sig_count=218) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x00000000009feb44 in sync_array_wait_event (arr=0x23b5c50, index=2) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/sync/sync0arr.cc:424
#4  0x00000000009fffa8 in mutex_spin_wait (mutex=0x2780748, file_name=0xbfb068 "/bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/que/que0que.cc", line=1304) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/sync/sync0sync.cc:584
#5  0x00000000009ae62c in pfs_mutex_enter_func (line=1304, mutex=0x2780748, file_name=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/include/sync0sync.ic:251
#6  que_eval_sql (info=<optimized out>, sql=<optimized out>, reserve_dict_mutex=1, trx=0x7f2e48006f28) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/que/que0que.cc:1304
#7  0x0000000000a8c5a8 in dict_stats_fetch_from_ps (table=0x7f2e4800a618) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/dict/dict0stats.cc:2828
#8  dict_stats_update (table=0x7f2e7006c828, stats_upd_option=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/dict/dict0stats.cc:3034
#9  0x000000000094af5b in dict_stats_init (table=0x7f2e7006c828) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/include/dict0stats.ic:174
#10 ha_innobase::open (this=0x7f2e48049e00, name=0x7f2e480040c8 "./test/table10_innodb_default_char", mode=<optimized out>, test_if_locked=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/handler/ha_innodb.cc:5151
#11 0x00000000005ab23e in handler::ha_open (this=0x7f2e48049e00, table_arg=<optimized out>, name=0x7f2e480040c8 "./test/table10_innodb_default_char", mode=2, test_if_locked=2) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/handler.cc:2514
#12 0x00000000007707c4 in open_table_from_share (thd=0x281b7a0, share=<optimized out>, alias=<optimized out>, db_stat=39, prgflag=<optimized out>, ha_open_flags=0, outparam=0x7f2e48027fd0, is_create_table=false) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/table.cc:2332
#13 0x000000000069b4a8 in open_table (thd=0x281b7a0, table_list=0x7f2e48014f60, ot_ctx=0x7f2e888cd160) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_base.cc:3107
#14 0x000000000069dcc2 in open_and_process_table (ot_ctx=0x7f2e888cd160, has_prelocking_list=false, prelocking_strategy=0x7f2e888cec20, flags=0, counter=0x7f2e888cec38, tables=0x7f2e48014f60, lex=0x281db30, thd=0x281b7a0) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_base.cc:4592
#15 open_tables (thd=0x281b7a0, start=0x7f2e888cd2b8, counter=0x7f2e888cec38, flags=0, prelocking_strategy=0x7f2e888cec20) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_base.cc:5099
#16 0x0000000000734d3c in mysql_alter_table (thd=0x281b7a0, new_db=0x7f2e34006960 "test", new_name=0x0, create_info=0x7f2e888cf200, table_list=0x7f2e48014f60, alter_info=0x7f2e888cf2e0, order_num=0, order=0x0, ignore=false) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_table.cc:7886
#17 0x000000000081f5b7 in Sql_cmd_alter_table::execute (this=<optimized out>, thd=0x281b7a0) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_alter.cc:317
#18 0x00000000006e4659 in mysql_execute_command (thd=0x281b7a0) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:5157
#19 0x00000000006e6b88 in mysql_parse (thd=0x281b7a0, rawbuf=<optimized out>, length=42064688, parser_state=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:6477
#20 0x00000000006e81a7 in dispatch_command (command=<optimized out>, thd=0x281b7a0, packet=0x7f2e888d0a30 "\240\267\201\002", packet_length=455) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:1430
#21 0x0000000000781abf in threadpool_process_request (thd=0x281b7a0) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_common.cc:312
#22 0x0000000000783e68 in handle_event (connection=0x287d0b0) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1466
#23 worker_main (param=0x12f0e00 <all_groups+2560>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1519
#24 0x00000000009220fa in pfs_spawn_thread (arg=0x283f790) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#25 0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#26 0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 36 (LWP 8930):
+bt
#0  0x000000363720e054 in __lll_lock_wait () from /lib64/libpthread.so.0
#1  0x00000036372093be in _L_lock_995 () from /lib64/libpthread.so.0
#2  0x0000003637209326 in pthread_mutex_lock () from /lib64/libpthread.so.0
#3  0x000000000069b900 in inline_mysql_mutex_lock (src_line=115, src_file=0xb72c30 "/bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/table_cache.h", that=0x0) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/include/mysql/psi/mysql_thread.h:688
#4  lock (this=0x12ed5a0 <table_cache_manager>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/table_cache.h:115
#5  open_table (thd=0x28737c0, table_list=0x7f2e24005280, ot_ctx=0x7f2e80096160) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_base.cc:2884
#6  0x000000000069dcc2 in open_and_process_table (ot_ctx=0x7f2e80096160, has_prelocking_list=false, prelocking_strategy=0x7f2e80097c20, flags=0, counter=0x7f2e80097c38, tables=0x7f2e24005280, lex=0x2875b50, thd=0x28737c0) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_base.cc:4592
#7  open_tables (thd=0x28737c0, start=0x7f2e800962b8, counter=0x7f2e80097c38, flags=0, prelocking_strategy=0x7f2e80097c20) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_base.cc:5099
#8  0x0000000000734d3c in mysql_alter_table (thd=0x28737c0, new_db=0x7f2e240057e0 "test", new_name=0x0, create_info=0x7f2e80098200, table_list=0x7f2e24005280, alter_info=0x7f2e800982e0, order_num=0, order=0x0, ignore=false) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_table.cc:7886
#9  0x000000000081f5b7 in Sql_cmd_alter_table::execute (this=<optimized out>, thd=0x28737c0) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_alter.cc:317
#10 0x00000000006e4659 in mysql_execute_command (thd=0x28737c0) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:5157
#11 0x00000000006e6b88 in mysql_parse (thd=0x28737c0, rawbuf=<optimized out>, length=42425168, parser_state=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:6477
#12 0x00000000006e7a31 in dispatch_command (command=COM_QUERY, thd=0x28737c0, packet=0x7f2e80099a30 "\300\067\207\002", packet_length=663) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:1355
#13 0x0000000000781abf in threadpool_process_request (thd=0x28737c0) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_common.cc:312
#14 0x0000000000783e68 in handle_event (connection=0x2822b50) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1466
#15 worker_main (param=0x12f1200 <all_groups+3584>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1519
#16 0x00000000009220fa in pfs_spawn_thread (arg=0x7f2e2400ee30) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#17 0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#18 0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 35 (LWP 8891):
+bt
#0  0x0000003636ee8f03 in epoll_wait () from /lib64/libc.so.6
#1  0x0000000000782417 in io_poll_wait (pollfd=16, native_events=0x7f2e88788b60, maxevents=1024, timeout_ms=-1) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:281
#2  0x0000000000782905 in listener (current_thread=<optimized out>, thread_group=0x12f0a00 <all_groups+1536>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:643
#3  0x0000000000783134 in get_event (current_thread=0x7f2e8878bcd0, thread_group=0x12f0a00 <all_groups+1536>, abstime=0x7f2e8878bd60) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1093
#4  0x0000000000783b76 in worker_main (param=0x12f0a00 <all_groups+1536>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1515
#5  0x00000000009220fa in pfs_spawn_thread (arg=0x28b4480) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#6  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#7  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 34 (LWP 8895):
+bt
#0  0x000000363720b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000783086 in inline_mysql_cond_timedwait (src_line=1131, abstime=0x7f2e88709d60, mutex=0x12f0e00 <all_groups+2560>, that=0x7f2e88709cf0, src_file=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/include/mysql/psi/mysql_thread.h:1199
#2  get_event (current_thread=0x7f2e88709cd0, thread_group=0x12f0e00 <all_groups+2560>, abstime=0x7f2e88709d60) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1131
#3  0x0000000000783b76 in worker_main (param=0x12f0e00 <all_groups+2560>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1515
#4  0x00000000009220fa in pfs_spawn_thread (arg=0x2847580) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#5  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#6  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 33 (LWP 8840):
+bt
#0  0x0000003636a00614 in ?? () from /lib64/libaio.so.1
#1  0x000000000098df6b in os_aio_linux_collect (seg_size=256, segment=<optimized out>, array=0x23ad2b0) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5090
#2  os_aio_linux_handle (global_seg=4, message1=0x7f2e8c61bd98, message2=0x7f2e8c61bd90, type=0x7f2e8c61bd88, space_id=0x7f2e8c61bd80) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5235
#3  0x0000000000a90b78 in fil_aio_wait (segment=4) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/fil/fil0fil.cc:5577
#4  0x00000000009f9018 in io_handler_thread (arg=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0start.cc:479
#5  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#6  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 32 (LWP 8843):
+bt
#0  0x0000003636a00614 in ?? () from /lib64/libaio.so.1
#1  0x000000000098df6b in os_aio_linux_collect (seg_size=256, segment=<optimized out>, array=0x23f4f50) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5090
#2  os_aio_linux_handle (global_seg=7, message1=0x7f2e8a818d98, message2=0x7f2e8a818d90, type=0x7f2e8a818d88, space_id=0x7f2e8a818d80) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5235
#3  0x0000000000a90b78 in fil_aio_wait (segment=7) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/fil/fil0fil.cc:5577
#4  0x00000000009f9018 in io_handler_thread (arg=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0start.cc:479
#5  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#6  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 31 (LWP 8894):
+bt
#0  0x0000003636ee8f03 in epoll_wait () from /lib64/libc.so.6
#1  0x0000000000782417 in io_poll_wait (pollfd=17, native_events=0x7f2e88747b60, maxevents=1024, timeout_ms=-1) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:281
#2  0x0000000000782905 in listener (current_thread=<optimized out>, thread_group=0x12f0c00 <all_groups+2048>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:643
#3  0x0000000000783134 in get_event (current_thread=0x7f2e8874acd0, thread_group=0x12f0c00 <all_groups+2048>, abstime=0x7f2e8874ad60) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1093
#4  0x0000000000783b76 in worker_main (param=0x12f0c00 <all_groups+2048>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1515
#5  0x00000000009220fa in pfs_spawn_thread (arg=0x28de900) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#6  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#7  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 30 (LWP 8879):
+bt
#0  0x000000363720b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000783086 in inline_mysql_cond_timedwait (src_line=1131, abstime=0x7f2e8888fd60, mutex=0x12f1000 <all_groups+3072>, that=0x7f2e8888fcf0, src_file=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/include/mysql/psi/mysql_thread.h:1199
#2  get_event (current_thread=0x7f2e8888fcd0, thread_group=0x12f1000 <all_groups+3072>, abstime=0x7f2e8888fd60) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1131
#3  0x0000000000783b76 in worker_main (param=0x12f1000 <all_groups+3072>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1515
#4  0x00000000009220fa in pfs_spawn_thread (arg=0x2864d50) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#5  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#6  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 29 (LWP 8849):
+bt
#0  0x000000363720b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x000000000099211b in os_cond_wait_timed (abstime=0x7f2e86566cf0, fast_mutex=0x23b6be0, cond=0x23b6c20) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:177
#2  os_event_wait_time_low (event=0x23b6be0, time_in_usec=<optimized out>, reset_sig_count=1) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:723
#3  0x00000000009f6394 in srv_monitor_thread (arg=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:1833
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 28 (LWP 8839):
+bt
#0  0x0000003636a00614 in ?? () from /lib64/libaio.so.1
#1  0x000000000098df6b in os_aio_linux_collect (seg_size=256, segment=<optimized out>, array=0x23ad2b0) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5090
#2  os_aio_linux_handle (global_seg=3, message1=0x7f2e8d01cd98, message2=0x7f2e8d01cd90, type=0x7f2e8d01cd88, space_id=0x7f2e8d01cd80) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5235
#3  0x0000000000a90b78 in fil_aio_wait (segment=3) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/fil/fil0fil.cc:5577
#4  0x00000000009f9018 in io_handler_thread (arg=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0start.cc:479
#5  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#6  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 27 (LWP 8852):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00000000009919b3 in os_cond_wait (fast_mutex=0x23b69a0, cond=0x23b69e0) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  os_event_wait_low (event=0x23b69a0, reset_sig_count=4869) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x00000000009f7ec0 in srv_worker_thread (arg=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3006
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 26 (LWP 8842):
+bt
#0  0x0000003636a00614 in ?? () from /lib64/libaio.so.1
#1  0x000000000098df6b in os_aio_linux_collect (seg_size=256, segment=<optimized out>, array=0x23f4f50) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5090
#2  os_aio_linux_handle (global_seg=6, message1=0x7f2e8b219d98, message2=0x7f2e8b219d90, type=0x7f2e8b219d88, space_id=0x7f2e8b219d80) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5235
#3  0x0000000000a90b78 in fil_aio_wait (segment=6) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/fil/fil0fil.cc:5577
#4  0x00000000009f9018 in io_handler_thread (arg=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0start.cc:479
#5  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#6  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 25 (LWP 8834):
+bt
#0  0x0000003636edf253 in poll () from /lib64/libc.so.6
#1  0x000000000059ccfa in handle_connections_sockets () at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/mysqld.cc:6258
#2  0x00000000005a4381 in mysqld_main (argc=72, argv=0x22bc188) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/mysqld.cc:5673
#3  0x0000003636e1ecdd in __libc_start_main () from /lib64/libc.so.6
#4  0x0000000000595b41 in _start ()

Thread 24 (LWP 8859):
+bt
#0  0x000000363720b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00000000007835de in inline_mysql_cond_timedwait (src_line=505, abstime=0x7f2e80b5dd60, mutex=<optimized out>, that=<optimized out>, src_file=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/include/mysql/psi/mysql_thread.h:1199
#2  timer_thread (param=0x1300420 <pool_timer>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:505
#3  0x00000000009220fa in pfs_spawn_thread (arg=0x27d16d0) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 23 (LWP 8896):
+bt
#0  0x000000363720b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000783086 in inline_mysql_cond_timedwait (src_line=1131, abstime=0x7f2e886c8d60, mutex=0x12f0600 <all_groups+512>, that=0x7f2e886c8cf0, src_file=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/include/mysql/psi/mysql_thread.h:1199
#2  get_event (current_thread=0x7f2e886c8cd0, thread_group=0x12f0600 <all_groups+512>, abstime=0x7f2e886c8d60) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1131
#3  0x0000000000783b76 in worker_main (param=0x12f0600 <all_groups+512>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1515
#4  0x00000000009220fa in pfs_spawn_thread (arg=0x7f2e78010270) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#5  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#6  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 22 (LWP 8841):
+bt
#0  0x0000003636a00614 in ?? () from /lib64/libaio.so.1
#1  0x000000000098df6b in os_aio_linux_collect (seg_size=256, segment=<optimized out>, array=0x23ad2b0) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5090
#2  os_aio_linux_handle (global_seg=5, message1=0x7f2e8bc1ad98, message2=0x7f2e8bc1ad90, type=0x7f2e8bc1ad88, space_id=0x7f2e8bc1ad80) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5235
#3  0x0000000000a90b78 in fil_aio_wait (segment=5) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/fil/fil0fil.cc:5577
#4  0x00000000009f9018 in io_handler_thread (arg=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0start.cc:479
#5  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#6  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 21 (LWP 8900):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00000000009919b3 in os_cond_wait (fast_mutex=0x2780800, cond=0x2780840) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  os_event_wait_low (event=0x2780800, reset_sig_count=218) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x00000000009feb44 in sync_array_wait_event (arr=0x23b5c50, index=3) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/sync/sync0arr.cc:424
#4  0x00000000009fffa8 in mutex_spin_wait (mutex=0x2780748, file_name=0xc13158 "/bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/dict/dict0dict.cc", line=479) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/sync/sync0sync.cc:584
#5  0x0000000000a70386 in mutex_enter_func (line=479, mutex=0x2780748, file_name=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/include/sync0sync.ic:220
#6  pfs_mutex_enter_func (mutex=0x2780748, line=479, file_name=0xc13158 "/bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/dict/dict0dict.cc") at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/include/sync0sync.ic:251
#7  0x0000000000a70501 in dict_table_close (table=0x7f2e4c00d598, dict_locked=0, try_drop=1) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/dict/dict0dict.cc:479
#8  0x00000000009cfbc5 in row_prebuilt_free (prebuilt=0x7f2e4c008bd8, dict_locked=0) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/row/row0mysql.cc:894
#9  0x0000000000945ae4 in ha_innobase::close (this=0x7f2e4c00de10) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/handler/ha_innodb.cc:5410
#10 0x0000000000770ee9 in closefrm (table=0x7f2e4c006f80, free_share=true) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/table.cc:2436
#11 0x0000000000692626 in intern_close_table (table=0x7f2e4c006f80) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_base.cc:821
#12 0x0000000000779d56 in Table_cache_manager::free_table (this=0x12ed5a0 <table_cache_manager>, thd=<optimized out>, remove_type=<optimized out>, share=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/table_cache.cc:380
#13 0x0000000000694a58 in tdc_remove_table (thd=0x293bdd0, remove_type=TDC_RT_REMOVE_ALL, db=<optimized out>, table_name=<optimized out>, has_lock=false) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_base.cc:9334
#14 0x0000000000734275 in mysql_rm_table (thd=0x293bdd0, tables=0x7f2e2c004da8, if_exists=0 '\000', drop_temporary=0 '\000') at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_table.cc:2119
#15 0x00000000006e4290 in mysql_execute_command (thd=0x293bdd0) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:3846
#16 0x00000000006e6b88 in mysql_parse (thd=0x293bdd0, rawbuf=<optimized out>, length=43245920, parser_state=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:6477
#17 0x00000000006e7a31 in dispatch_command (command=COM_QUERY, thd=0x293bdd0, packet=0x7f2e88687a30 "н\223\002", packet_length=40) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:1355
#18 0x0000000000781abf in threadpool_process_request (thd=0x293bdd0) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_common.cc:312
#19 0x0000000000783e68 in handle_event (connection=0x28a9210) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1466
#20 worker_main (param=0x12f1000 <all_groups+3072>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1519
#21 0x00000000009220fa in pfs_spawn_thread (arg=0x28de900) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#22 0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#23 0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 20 (LWP 8836):
+bt
#0  0x0000003636a00614 in ?? () from /lib64/libaio.so.1
#1  0x000000000098df6b in os_aio_linux_collect (seg_size=256, segment=<optimized out>, array=0x23e74b0) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5090
#2  os_aio_linux_handle (global_seg=0, message1=0x7f2ea0d95d98, message2=0x7f2ea0d95d90, type=0x7f2ea0d95d88, space_id=0x7f2ea0d95d80) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5235
#3  0x0000000000a90b78 in fil_aio_wait (segment=0) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/fil/fil0fil.cc:5577
#4  0x00000000009f9018 in io_handler_thread (arg=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0start.cc:479
#5  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#6  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 19 (LWP 8848):
+bt
#0  0x000000363720b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x000000000099211b in os_cond_wait_timed (abstime=0x7f2e86f67cc0, fast_mutex=0x23b6b50, cond=0x23b6b90) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:177
#2  os_event_wait_time_low (event=0x23b6b50, time_in_usec=<optimized out>, reset_sig_count=1) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:723
#3  0x00000000009f40a6 in srv_error_monitor_thread (arg=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:2095
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 18 (LWP 8850):
+bt
#0  0x0000003636ee14f3 in select () from /lib64/libc.so.6
#1  0x00000000009926af in os_thread_sleep (tm=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0thread.cc:255
#2  0x00000000009f8663 in srv_master_sleep () at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:2820
#3  srv_master_thread (arg=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:2864
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 17 (LWP 8838):
+bt
#0  0x0000003636a00614 in ?? () from /lib64/libaio.so.1
#1  0x000000000098df6b in os_aio_linux_collect (seg_size=256, segment=<optimized out>, array=0x23ad2b0) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5090
#2  os_aio_linux_handle (global_seg=2, message1=0x7f2e8da1dd98, message2=0x7f2e8da1dd90, type=0x7f2e8da1dd88, space_id=0x7f2e8da1dd80) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5235
#3  0x0000000000a90b78 in fil_aio_wait (segment=2) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/fil/fil0fil.cc:5577
#4  0x00000000009f9018 in io_handler_thread (arg=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0start.cc:479
#5  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#6  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 16 (LWP 10162):
+bt
#0  0x000000363720b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000783086 in inline_mysql_cond_timedwait (src_line=1131, abstime=0x7f2e5bffed60, mutex=0x12f0400 <all_groups>, that=0x7f2e5bffecf0, src_file=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/include/mysql/psi/mysql_thread.h:1199
#2  get_event (current_thread=0x7f2e5bffecd0, thread_group=0x12f0400 <all_groups>, abstime=0x7f2e5bffed60) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1131
#3  0x0000000000783b76 in worker_main (param=0x12f0400 <all_groups>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1515
#4  0x00000000009220fa in pfs_spawn_thread (arg=0x27ffa60) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#5  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#6  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 15 (LWP 8866):
+bt
#0  0x000000363720b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000783086 in inline_mysql_cond_timedwait (src_line=1131, abstime=0x7f2e88952d60, mutex=0x12f0800 <all_groups+1024>, that=0x7f2e88952cf0, src_file=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/include/mysql/psi/mysql_thread.h:1199
#2  get_event (current_thread=0x7f2e88952cd0, thread_group=0x12f0800 <all_groups+1024>, abstime=0x7f2e88952d60) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1131
#3  0x0000000000783b76 in worker_main (param=0x12f0800 <all_groups+1024>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1515
#4  0x00000000009220fa in pfs_spawn_thread (arg=0x7f2e6c00af10) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#5  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#6  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 14 (LWP 10237):
+bt
#0  0x000000363720b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000783086 in inline_mysql_cond_timedwait (src_line=1131, abstime=0x7f2e889d4d60, mutex=0x12f0800 <all_groups+1024>, that=0x7f2e889d4cf0, src_file=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/include/mysql/psi/mysql_thread.h:1199
#2  get_event (current_thread=0x7f2e889d4cd0, thread_group=0x12f0800 <all_groups+1024>, abstime=0x7f2e889d4d60) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1131
#3  0x0000000000783b76 in worker_main (param=0x12f0800 <all_groups+1024>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1515
#4  0x00000000009220fa in pfs_spawn_thread (arg=0x27ffa60) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#5  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#6  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 13 (LWP 8865):
+bt
#0  0x000000363720b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000783086 in inline_mysql_cond_timedwait (src_line=1131, abstime=0x7f2e88993d60, mutex=0x12f0800 <all_groups+1024>, that=0x7f2e88993cf0, src_file=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/include/mysql/psi/mysql_thread.h:1199
#2  get_event (current_thread=0x7f2e88993cd0, thread_group=0x12f0800 <all_groups+1024>, abstime=0x7f2e88993d60) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1131
#3  0x0000000000783b76 in worker_main (param=0x12f0800 <all_groups+1024>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1515
#4  0x00000000009220fa in pfs_spawn_thread (arg=0x288e590) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#5  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#6  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 12 (LWP 8935):
+bt
#0  0x000000363720b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000783086 in inline_mysql_cond_timedwait (src_line=1131, abstime=0x7f2e5bf3bd60, mutex=0x12f0a00 <all_groups+1536>, that=0x7f2e5bf3bcf0, src_file=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/include/mysql/psi/mysql_thread.h:1199
#2  get_event (current_thread=0x7f2e5bf3bcd0, thread_group=0x12f0a00 <all_groups+1536>, abstime=0x7f2e5bf3bd60) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1131
#3  0x0000000000783b76 in worker_main (param=0x12f0a00 <all_groups+1536>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1515
#4  0x00000000009220fa in pfs_spawn_thread (arg=0x7f2e3c007f30) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#5  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#6  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 11 (LWP 10026):
+bt
#0  0x000000363720b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000783086 in inline_mysql_cond_timedwait (src_line=1131, abstime=0x7f2e5be37d60, mutex=0x12f1000 <all_groups+3072>, that=0x7f2e5be37cf0, src_file=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/include/mysql/psi/mysql_thread.h:1199
#2  get_event (current_thread=0x7f2e5be37cd0, thread_group=0x12f1000 <all_groups+3072>, abstime=0x7f2e5be37d60) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1131
#3  0x0000000000783b76 in worker_main (param=0x12f1000 <all_groups+3072>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1515
#4  0x00000000009220fa in pfs_spawn_thread (arg=0x27ffa60) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#5  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#6  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 10 (LWP 8837):
+bt
#0  0x0000003636a00614 in ?? () from /lib64/libaio.so.1
#1  0x000000000098df6b in os_aio_linux_collect (seg_size=256, segment=<optimized out>, array=0x23d9a10) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5090
#2  os_aio_linux_handle (global_seg=1, message1=0x7f2e8e41ed98, message2=0x7f2e8e41ed90, type=0x7f2e8e41ed88, space_id=0x7f2e8e41ed80) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5235
#3  0x0000000000a90b78 in fil_aio_wait (segment=1) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/fil/fil0fil.cc:5577
#4  0x00000000009f9018 in io_handler_thread (arg=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0start.cc:479
#5  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#6  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 9 (LWP 8845):
+bt
#0  0x0000003636a00614 in ?? () from /lib64/libaio.so.1
#1  0x000000000098df6b in os_aio_linux_collect (seg_size=256, segment=<optimized out>, array=0x23f4f50) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5090
#2  os_aio_linux_handle (global_seg=9, message1=0x7f2e89416d98, message2=0x7f2e89416d90, type=0x7f2e89416d88, space_id=0x7f2e89416d80) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5235
#3  0x0000000000a90b78 in fil_aio_wait (segment=9) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/fil/fil0fil.cc:5577
#4  0x00000000009f9018 in io_handler_thread (arg=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0start.cc:479
#5  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#6  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 8 (LWP 10137):
+bt
#0  0x000000363720b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000783086 in inline_mysql_cond_timedwait (src_line=1131, abstime=0x7f2e5bdb5d60, mutex=0x12f1200 <all_groups+3584>, that=0x7f2e5bdb5cf0, src_file=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/include/mysql/psi/mysql_thread.h:1199
#2  get_event (current_thread=0x7f2e5bdb5cd0, thread_group=0x12f1200 <all_groups+3584>, abstime=0x7f2e5bdb5d60) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1131
#3  0x0000000000783b76 in worker_main (param=0x12f1200 <all_groups+3584>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1515
#4  0x00000000009220fa in pfs_spawn_thread (arg=0x27ffa60) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#5  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#6  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 7 (LWP 10234):
+bt
#0  0x000000363720b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000783086 in inline_mysql_cond_timedwait (src_line=1131, abstime=0x7f2e5be78d60, mutex=0x12f0600 <all_groups+512>, that=0x7f2e5be78cf0, src_file=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/include/mysql/psi/mysql_thread.h:1199
#2  get_event (current_thread=0x7f2e5be78cd0, thread_group=0x12f0600 <all_groups+512>, abstime=0x7f2e5be78d60) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1131
#3  0x0000000000783b76 in worker_main (param=0x12f0600 <all_groups+512>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1515
#4  0x00000000009220fa in pfs_spawn_thread (arg=0x27ffa60) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#5  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#6  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 6 (LWP 8934):
+bt
#0  0x000000363720e054 in __lll_lock_wait () from /lib64/libpthread.so.0
#1  0x00000036372093be in _L_lock_995 () from /lib64/libpthread.so.0
#2  0x0000003637209326 in pthread_mutex_lock () from /lib64/libpthread.so.0
#3  0x000000000069b900 in inline_mysql_mutex_lock (src_line=115, src_file=0xb72c30 "/bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/table_cache.h", that=0x0) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/include/mysql/psi/mysql_thread.h:688
#4  lock (this=0x12ed5a0 <table_cache_manager>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/table_cache.h:115
#5  open_table (thd=0x2850500, table_list=0x7f2e6c00c798, ot_ctx=0x7f2e5bf7b290) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_base.cc:2884
#6  0x000000000069dcc2 in open_and_process_table (ot_ctx=0x7f2e5bf7b290, has_prelocking_list=false, prelocking_strategy=0x7f2e5bf7b350, flags=0, counter=0x2852948, tables=0x7f2e6c00c798, lex=0x2852890, thd=0x2850500) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_base.cc:4592
#7  open_tables (thd=0x2850500, start=0x7f2e5bf7b338, counter=0x2852948, flags=0, prelocking_strategy=0x7f2e5bf7b350) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_base.cc:5099
#8  0x000000000069dddf in open_normal_and_derived_tables (thd=<optimized out>, tables=0x7f2e6c00c798, flags=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_base.cc:5798
#9  0x00000000006e02f1 in execute_sqlcom_select (thd=0x2850500, all_tables=0x7f2e6c00c798) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:5278
#10 0x00000000006e2f88 in mysql_execute_command (thd=0x2850500) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:2762
#11 0x00000000006e6b88 in mysql_parse (thd=0x2850500, rawbuf=<optimized out>, length=42281104, parser_state=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:6477
#12 0x00000000006e7a31 in dispatch_command (command=COM_QUERY, thd=0x2850500, packet=0x7f2e5bf7ca30 "", packet_length=163) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:1355
#13 0x0000000000781abf in threadpool_process_request (thd=0x2850500) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_common.cc:312
#14 0x0000000000783e68 in handle_event (connection=0x2802ed0) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1466
#15 worker_main (param=0x12f0800 <all_groups+1024>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1519
#16 0x00000000009220fa in pfs_spawn_thread (arg=0x7f2e6c086310) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#17 0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#18 0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 5 (LWP 8933):
+bt
#0  0x000000363720b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000783086 in inline_mysql_cond_timedwait (src_line=1131, abstime=0x7f2e5bfbdd60, mutex=0x12f0400 <all_groups>, that=0x7f2e5bfbdcf0, src_file=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/include/mysql/psi/mysql_thread.h:1199
#2  get_event (current_thread=0x7f2e5bfbdcd0, thread_group=0x12f0400 <all_groups>, abstime=0x7f2e5bfbdd60) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1131
#3  0x0000000000783b76 in worker_main (param=0x12f0400 <all_groups>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1515
#4  0x00000000009220fa in pfs_spawn_thread (arg=0x7f2e1800bd00) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#5  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#6  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 4 (LWP 9986):
+bt
#0  0x000000363720b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000783086 in inline_mysql_cond_timedwait (src_line=1131, abstime=0x7f2e5bd74d60, mutex=0x12f0e00 <all_groups+2560>, that=0x7f2e5bd74cf0, src_file=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/include/mysql/psi/mysql_thread.h:1199
#2  get_event (current_thread=0x7f2e5bd74cd0, thread_group=0x12f0e00 <all_groups+2560>, abstime=0x7f2e5bd74d60) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1131
#3  0x0000000000783b76 in worker_main (param=0x12f0e00 <all_groups+2560>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1515
#4  0x00000000009220fa in pfs_spawn_thread (arg=0x27ffa60) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#5  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#6  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 3 (LWP 8932):
+bt
#0  0x000000363720b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000783086 in inline_mysql_cond_timedwait (src_line=1131, abstime=0x7f2e80058d60, mutex=0x12f0600 <all_groups+512>, that=0x7f2e80058cf0, src_file=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/include/mysql/psi/mysql_thread.h:1199
#2  get_event (current_thread=0x7f2e80058cd0, thread_group=0x12f0600 <all_groups+512>, abstime=0x7f2e80058d60) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1131
#3  0x0000000000783b76 in worker_main (param=0x12f0600 <all_groups+512>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1515
#4  0x00000000009220fa in pfs_spawn_thread (arg=0x7f2e2800bd00) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#5  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#6  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 2 (LWP 9950):
+bt
#0  0x000000363720b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000783086 in inline_mysql_cond_timedwait (src_line=1131, abstime=0x7f2e800dad60, mutex=0x12f0c00 <all_groups+2048>, that=0x7f2e800dacf0, src_file=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/include/mysql/psi/mysql_thread.h:1199
#2  get_event (current_thread=0x7f2e800dacd0, thread_group=0x12f0c00 <all_groups+2048>, abstime=0x7f2e800dad60) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1131
#3  0x0000000000783b76 in worker_main (param=0x12f0c00 <all_groups+2048>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1515
#4  0x00000000009220fa in pfs_spawn_thread (arg=0x27ffa60) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#5  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#6  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 1 (LWP 8911):
+bt
#0  0x000000363720c69c in pthread_kill () from /lib64/libpthread.so.0
#1  0x0000000000663cde in handle_fatal_signal (sig=11) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/signal_handler.cc:251
#2  <signal handler called>
#3  0x00000000005a7e04 in handler::ha_close (this=0x7f2e2403f450) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/handler.cc:2586
#4  0x000000000070ec6c in store_temporary_table_record (thd=0x281b7a0, table=0x7f2e2402cfe0, tmp_table=<optimized out>, db=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_show.cc:3994
#5  0x000000000071ff5d in fill_global_temporary_tables (thd=0x2910c20, tables=0x7f2e24021b70, cond=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_show.cc:4046
#6  0x000000000070e6c1 in do_fill_table (join_table=<optimized out>, table_list=0x7f2e24021b70, thd=0x2910c20) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_show.cc:7715
#7  get_schema_tables_result (join=0x7f2e24029310, executed_place=PROCESSED_BY_JOIN_EXEC) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_show.cc:7816
#8  0x0000000000702bed in JOIN::prepare_result (this=0x7f2e24029310, columns_list=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_select.cc:823
#9  0x00000000006c279f in JOIN::exec (this=0x7f2e24029310) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_executor.cc:116
#10 0x00000000007db979 in subselect_single_select_engine::exec (this=0x7f2e24022218) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/item_subselect.cc:2798
#11 0x00000000007dd2c4 in Item_subselect::exec (this=0x7f2e240220d0) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/item_subselect.cc:641
#12 0x00000000007da3a5 in Item_in_subselect::val_bool (this=0x7f2e240220d0) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/item_subselect.cc:1399
#13 0x00000000005d0a05 in Item_in_optimizer::val_int (this=0x7f2e240297f0) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/item_cmpfunc.cc:2099
#14 0x000000000074f373 in skip_record (skip_record={bool (bool *, THD *, SQL_SELECT * const)} 0x74f361 <mysql_update(THD*, TABLE_LIST*, List<Item>&, List<Item>&, Item*, unsigned int, st_order*, unsigned long long, enum_duplicates, bool, unsigned long long*, unsigned long long*)+4289>, thd=0x2910c20, this=0x7f2e2402a3f0) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/opt_range.h:942
#15 mysql_update (thd=0x2910c20, table_list=0x7f2e2400c090, fields=..., values=..., conds=0x7f2e240297f0, order_num=0, order=0x7f2e88645200, limit=18446744073709551615, handle_duplicates=DUP_ERROR, ignore=false, found_return=0x7f2e88646018, updated_return=0x7f2e88646020) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_update.cc:745
#16 0x00000000006e3a6a in mysql_execute_command (thd=0x2910c20) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:3511
#17 0x00000000006e6b88 in mysql_parse (thd=0x2910c20, rawbuf=<optimized out>, length=43069360, parser_state=<optimized out>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:6477
#18 0x00000000006e7a31 in dispatch_command (command=COM_QUERY, thd=0x2910c20, packet=0x7f2e88646a30 " \f\221\002", packet_length=215) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:1355
#19 0x0000000000781abf in threadpool_process_request (thd=0x2910c20) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_common.cc:312
#20 0x0000000000783e68 in handle_event (connection=0x285f4b0) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1466
#21 worker_main (param=0x12f1200 <all_groups+3584>) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1519
#22 0x00000000009220fa in pfs_spawn_thread (arg=0x28de900) at /bzr/5.6-QA_opt/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#23 0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#24 0x0000003636ee890d in clone () from /lib64/libc.so.6
(gdb) +set logging off