(gdb) +thread apply all bt

Thread 69 (LWP 17387):
+bt
#0  0x0000003636edf253 in poll () from /lib64/libc.so.6
#1  0x000000000062cf2a in handle_connections_sockets () at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/mysqld.cc:6258
#2  0x00000000006342fd in mysqld_main (argc=75, argv=0x4e31aa8) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/mysqld.cc:5673
#3  0x0000003636e1ecdd in __libc_start_main () from /lib64/libc.so.6
#4  0x0000000000626561 in _start ()

Thread 68 (LWP 17389):
+bt
#0  0x0000003636a00614 in ?? () from /lib64/libaio.so.1
#1  0x0000000000a67256 in os_aio_linux_collect (array=0x994f8a0, segment=<optimized out>, seg_size=256) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5090
#2  0x0000000000a67979 in os_aio_linux_handle (global_seg=0, message1=0x5c2bd98, message2=0x5c2bd90, type=0x5c2bd88, space_id=0x5c2bd80) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5235
#3  0x0000000000bb8977 in fil_aio_wait (segment=0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/fil/fil0fil.cc:5577
#4  0x0000000000b02f58 in io_handler_thread (arg=<optimized out>) at /bzr/5.6-QA_val/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 67 (LWP 17390):
+bt
#0  0x0000003636a00614 in ?? () from /lib64/libaio.so.1
#1  0x0000000000a67256 in os_aio_linux_collect (array=0x994d460, segment=<optimized out>, seg_size=256) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5090
#2  0x0000000000a67979 in os_aio_linux_handle (global_seg=1, message1=0x14427d98, message2=0x14427d90, type=0x14427d88, space_id=0x14427d80) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5235
#3  0x0000000000bb8977 in fil_aio_wait (segment=1) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/fil/fil0fil.cc:5577
#4  0x0000000000b02f58 in io_handler_thread (arg=<optimized out>) at /bzr/5.6-QA_val/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 66 (LWP 17391):
+bt
#0  0x0000003636a00614 in ?? () from /lib64/libaio.so.1
#1  0x0000000000a67256 in os_aio_linux_collect (array=0x994d050, segment=<optimized out>, seg_size=256) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5090
#2  0x0000000000a67979 in os_aio_linux_handle (global_seg=2, message1=0x14e28d98, message2=0x14e28d90, type=0x14e28d88, space_id=0x14e28d80) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5235
#3  0x0000000000bb8977 in fil_aio_wait (segment=2) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/fil/fil0fil.cc:5577
#4  0x0000000000b02f58 in io_handler_thread (arg=<optimized out>) at /bzr/5.6-QA_val/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 65 (LWP 17392):
+bt
#0  0x0000003636a00614 in ?? () from /lib64/libaio.so.1
#1  0x0000000000a67256 in os_aio_linux_collect (array=0x994d050, segment=<optimized out>, seg_size=256) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5090
#2  0x0000000000a67979 in os_aio_linux_handle (global_seg=3, message1=0x15829d98, message2=0x15829d90, type=0x15829d88, space_id=0x15829d80) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5235
#3  0x0000000000bb8977 in fil_aio_wait (segment=3) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/fil/fil0fil.cc:5577
#4  0x0000000000b02f58 in io_handler_thread (arg=<optimized out>) at /bzr/5.6-QA_val/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 64 (LWP 17393):
+bt
#0  0x0000003636a00614 in ?? () from /lib64/libaio.so.1
#1  0x0000000000a67256 in os_aio_linux_collect (array=0x994d050, segment=<optimized out>, seg_size=256) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5090
#2  0x0000000000a67979 in os_aio_linux_handle (global_seg=4, message1=0x1622ad98, message2=0x1622ad90, type=0x1622ad88, space_id=0x1622ad80) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5235
#3  0x0000000000bb8977 in fil_aio_wait (segment=4) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/fil/fil0fil.cc:5577
#4  0x0000000000b02f58 in io_handler_thread (arg=<optimized out>) at /bzr/5.6-QA_val/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 63 (LWP 17394):
+bt
#0  0x0000003636a00614 in ?? () from /lib64/libaio.so.1
#1  0x0000000000a67256 in os_aio_linux_collect (array=0x994d050, segment=<optimized out>, seg_size=256) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5090
#2  0x0000000000a67979 in os_aio_linux_handle (global_seg=5, message1=0x16c2bd98, message2=0x16c2bd90, type=0x16c2bd88, space_id=0x16c2bd80) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5235
#3  0x0000000000bb8977 in fil_aio_wait (segment=5) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/fil/fil0fil.cc:5577
#4  0x0000000000b02f58 in io_handler_thread (arg=<optimized out>) at /bzr/5.6-QA_val/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 62 (LWP 17395):
+bt
#0  0x0000003636a00614 in ?? () from /lib64/libaio.so.1
#1  0x0000000000a67256 in os_aio_linux_collect (array=0x9951ce0, segment=<optimized out>, seg_size=256) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5090
#2  0x0000000000a67979 in os_aio_linux_handle (global_seg=6, message1=0x1762cd98, message2=0x1762cd90, type=0x1762cd88, space_id=0x1762cd80) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5235
#3  0x0000000000bb8977 in fil_aio_wait (segment=6) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/fil/fil0fil.cc:5577
#4  0x0000000000b02f58 in io_handler_thread (arg=<optimized out>) at /bzr/5.6-QA_val/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 61 (LWP 17396):
+bt
#0  0x0000003636a00614 in ?? () from /lib64/libaio.so.1
#1  0x0000000000a67256 in os_aio_linux_collect (array=0x9951ce0, segment=<optimized out>, seg_size=256) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5090
#2  0x0000000000a67979 in os_aio_linux_handle (global_seg=7, message1=0x1802dd98, message2=0x1802dd90, type=0x1802dd88, space_id=0x1802dd80) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5235
#3  0x0000000000bb8977 in fil_aio_wait (segment=7) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/fil/fil0fil.cc:5577
#4  0x0000000000b02f58 in io_handler_thread (arg=<optimized out>) at /bzr/5.6-QA_val/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 60 (LWP 17397):
+bt
#0  0x0000003636a00614 in ?? () from /lib64/libaio.so.1
#1  0x0000000000a67256 in os_aio_linux_collect (array=0x9951ce0, segment=<optimized out>, seg_size=256) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5090
#2  0x0000000000a67979 in os_aio_linux_handle (global_seg=8, message1=0x18a2ed98, message2=0x18a2ed90, type=0x18a2ed88, space_id=0x18a2ed80) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5235
#3  0x0000000000bb8977 in fil_aio_wait (segment=8) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/fil/fil0fil.cc:5577
#4  0x0000000000b02f58 in io_handler_thread (arg=<optimized out>) at /bzr/5.6-QA_val/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 59 (LWP 17398):
+bt
#0  0x0000003636a00614 in ?? () from /lib64/libaio.so.1
#1  0x0000000000a67256 in os_aio_linux_collect (array=0x9951ce0, segment=<optimized out>, seg_size=256) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5090
#2  0x0000000000a67979 in os_aio_linux_handle (global_seg=9, message1=0x1942fd98, message2=0x1942fd90, type=0x1942fd88, space_id=0x1942fd80) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0file.cc:5235
#3  0x0000000000bb8977 in fil_aio_wait (segment=9) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/fil/fil0fil.cc:5577
#4  0x0000000000b02f58 in io_handler_thread (arg=<optimized out>) at /bzr/5.6-QA_val/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 58 (LWP 17472):
+bt
#0  0x000000363720b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6cf11 in os_cond_wait_timed (cond=<optimized out>, fast_mutex=<optimized out>, abstime=0x1ae30d60) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:177
#2  0x0000000000a6d033 in os_event_wait_time_low (event=0x137f1640, time_in_usec=<optimized out>, reset_sig_count=1) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:723
#3  0x0000000000a4c990 in lock_wait_timeout_thread (arg=<optimized out>) at /bzr/5.6-QA_val/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 57 (LWP 17473):
+bt
#0  0x000000363720b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6cf11 in os_cond_wait_timed (cond=<optimized out>, fast_mutex=<optimized out>, abstime=0x1b831d10) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:177
#2  0x0000000000a6d033 in os_event_wait_time_low (event=0x992ed80, time_in_usec=<optimized out>, reset_sig_count=1) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:723
#3  0x0000000000afdabf in srv_error_monitor_thread (arg=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:2093
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 56 (LWP 17474):
+bt
#0  0x000000363720b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6cf11 in os_cond_wait_timed (cond=<optimized out>, fast_mutex=<optimized out>, abstime=0x1c232d30) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:177
#2  0x0000000000a6d033 in os_event_wait_time_low (event=0x992ee40, time_in_usec=<optimized out>, reset_sig_count=1) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:723
#3  0x0000000000aff45d in srv_monitor_thread (arg=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:1831
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 55 (LWP 17475):
+bt
#0  0x0000003636ee14f3 in select () from /lib64/libc.so.6
#1  0x0000000000a6d7ff in os_thread_sleep (tm=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0thread.cc:255
#2  0x0000000000afcbdc in srv_master_sleep () at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:2818
#3  0x0000000000b00865 in srv_master_thread (arg=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:2862
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 54 (LWP 17476):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6d113 in os_cond_wait (cond=<optimized out>, fast_mutex=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  0x0000000000a6d1db in os_event_wait_low (event=0x9d52b40, reset_sig_count=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x0000000000afc3c0 in srv_purge_coordinator_suspend (slot=0x992d2c0, rseg_history_len=1101) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3155
#4  0x0000000000afc652 in srv_purge_coordinator_thread (arg=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3272
#5  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#6  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 53 (LWP 17477):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6d113 in os_cond_wait (cond=<optimized out>, fast_mutex=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  0x0000000000a6d1db in os_event_wait_low (event=0x9d52c00, reset_sig_count=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x0000000000afca72 in srv_worker_thread (arg=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3004
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 52 (LWP 17478):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6d113 in os_cond_wait (cond=<optimized out>, fast_mutex=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  0x0000000000a6d1db in os_event_wait_low (event=0x9d52cc0, reset_sig_count=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x0000000000afca72 in srv_worker_thread (arg=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3004
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 51 (LWP 17479):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6d113 in os_cond_wait (cond=<optimized out>, fast_mutex=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  0x0000000000a6d1db in os_event_wait_low (event=0x9d52d80, reset_sig_count=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x0000000000afca72 in srv_worker_thread (arg=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3004
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 50 (LWP 17480):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6d113 in os_cond_wait (cond=<optimized out>, fast_mutex=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  0x0000000000a6d1db in os_event_wait_low (event=0x9d52e40, reset_sig_count=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x0000000000afca72 in srv_worker_thread (arg=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3004
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 49 (LWP 17481):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6d113 in os_cond_wait (cond=<optimized out>, fast_mutex=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  0x0000000000a6d1db in os_event_wait_low (event=0x9d52f00, reset_sig_count=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x0000000000afca72 in srv_worker_thread (arg=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3004
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 48 (LWP 17482):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6d113 in os_cond_wait (cond=<optimized out>, fast_mutex=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  0x0000000000a6d1db in os_event_wait_low (event=0x992da00, reset_sig_count=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x0000000000afca72 in srv_worker_thread (arg=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3004
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 47 (LWP 17483):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6d113 in os_cond_wait (cond=<optimized out>, fast_mutex=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  0x0000000000a6d1db in os_event_wait_low (event=0x992dac0, reset_sig_count=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x0000000000afca72 in srv_worker_thread (arg=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3004
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 46 (LWP 17484):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6d113 in os_cond_wait (cond=<optimized out>, fast_mutex=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  0x0000000000a6d1db in os_event_wait_low (event=0x992e780, reset_sig_count=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x0000000000afca72 in srv_worker_thread (arg=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3004
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 45 (LWP 17485):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6d113 in os_cond_wait (cond=<optimized out>, fast_mutex=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  0x0000000000a6d1db in os_event_wait_low (event=0x992db80, reset_sig_count=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x0000000000afca72 in srv_worker_thread (arg=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3004
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 44 (LWP 17486):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6d113 in os_cond_wait (cond=<optimized out>, fast_mutex=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  0x0000000000a6d1db in os_event_wait_low (event=0x992dc40, reset_sig_count=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x0000000000afca72 in srv_worker_thread (arg=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3004
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 43 (LWP 17487):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6d113 in os_cond_wait (cond=<optimized out>, fast_mutex=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  0x0000000000a6d1db in os_event_wait_low (event=0x992dd00, reset_sig_count=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x0000000000afca72 in srv_worker_thread (arg=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3004
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 42 (LWP 17488):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6d113 in os_cond_wait (cond=<optimized out>, fast_mutex=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  0x0000000000a6d1db in os_event_wait_low (event=0x992ddc0, reset_sig_count=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x0000000000afca72 in srv_worker_thread (arg=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3004
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 41 (LWP 17489):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6d113 in os_cond_wait (cond=<optimized out>, fast_mutex=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  0x0000000000a6d1db in os_event_wait_low (event=0x992de80, reset_sig_count=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x0000000000afca72 in srv_worker_thread (arg=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3004
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 40 (LWP 17490):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6d113 in os_cond_wait (cond=<optimized out>, fast_mutex=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  0x0000000000a6d1db in os_event_wait_low (event=0x992df40, reset_sig_count=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x0000000000afca72 in srv_worker_thread (arg=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3004
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 39 (LWP 17491):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6d113 in os_cond_wait (cond=<optimized out>, fast_mutex=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  0x0000000000a6d1db in os_event_wait_low (event=0x992e000, reset_sig_count=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x0000000000afca72 in srv_worker_thread (arg=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3004
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 38 (LWP 17492):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6d113 in os_cond_wait (cond=<optimized out>, fast_mutex=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  0x0000000000a6d1db in os_event_wait_low (event=0x992ec00, reset_sig_count=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x0000000000afca72 in srv_worker_thread (arg=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3004
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 37 (LWP 17493):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6d113 in os_cond_wait (cond=<optimized out>, fast_mutex=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  0x0000000000a6d1db in os_event_wait_low (event=0x992e0c0, reset_sig_count=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x0000000000afca72 in srv_worker_thread (arg=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3004
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 36 (LWP 17494):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6d113 in os_cond_wait (cond=<optimized out>, fast_mutex=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  0x0000000000a6d1db in os_event_wait_low (event=0x992e180, reset_sig_count=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x0000000000afca72 in srv_worker_thread (arg=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3004
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 35 (LWP 17495):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6d113 in os_cond_wait (cond=<optimized out>, fast_mutex=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  0x0000000000a6d1db in os_event_wait_low (event=0x992e240, reset_sig_count=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x0000000000afca72 in srv_worker_thread (arg=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3004
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 34 (LWP 17496):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6d113 in os_cond_wait (cond=<optimized out>, fast_mutex=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  0x0000000000a6d1db in os_event_wait_low (event=0x992e300, reset_sig_count=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x0000000000afca72 in srv_worker_thread (arg=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3004
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 33 (LWP 17497):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6d113 in os_cond_wait (cond=<optimized out>, fast_mutex=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  0x0000000000a6d1db in os_event_wait_low (event=0x992e3c0, reset_sig_count=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x0000000000afca72 in srv_worker_thread (arg=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3004
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 32 (LWP 17498):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6d113 in os_cond_wait (cond=<optimized out>, fast_mutex=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  0x0000000000a6d1db in os_event_wait_low (event=0x992e480, reset_sig_count=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x0000000000afca72 in srv_worker_thread (arg=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3004
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 31 (LWP 17499):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6d113 in os_cond_wait (cond=<optimized out>, fast_mutex=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  0x0000000000a6d1db in os_event_wait_low (event=0x992e540, reset_sig_count=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x0000000000afca72 in srv_worker_thread (arg=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3004
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 30 (LWP 17500):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6d113 in os_cond_wait (cond=<optimized out>, fast_mutex=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  0x0000000000a6d1db in os_event_wait_low (event=0x992e600, reset_sig_count=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x0000000000afca72 in srv_worker_thread (arg=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3004
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 29 (LWP 17501):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6d113 in os_cond_wait (cond=<optimized out>, fast_mutex=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  0x0000000000a6d1db in os_event_wait_low (event=0x992e6c0, reset_sig_count=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x0000000000afca72 in srv_worker_thread (arg=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3004
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 28 (LWP 17502):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6d113 in os_cond_wait (cond=<optimized out>, fast_mutex=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  0x0000000000a6d1db in os_event_wait_low (event=0x992e900, reset_sig_count=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x0000000000afca72 in srv_worker_thread (arg=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3004
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 27 (LWP 17503):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6d113 in os_cond_wait (cond=<optimized out>, fast_mutex=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  0x0000000000a6d1db in os_event_wait_low (event=0x992e840, reset_sig_count=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x0000000000afca72 in srv_worker_thread (arg=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3004
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 26 (LWP 17504):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6d113 in os_cond_wait (cond=<optimized out>, fast_mutex=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  0x0000000000a6d1db in os_event_wait_low (event=0x992ea80, reset_sig_count=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x0000000000afca72 in srv_worker_thread (arg=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3004
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 25 (LWP 17505):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6d113 in os_cond_wait (cond=<optimized out>, fast_mutex=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  0x0000000000a6d1db in os_event_wait_low (event=0x992e9c0, reset_sig_count=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x0000000000afca72 in srv_worker_thread (arg=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3004
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 24 (LWP 17506):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6d113 in os_cond_wait (cond=<optimized out>, fast_mutex=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  0x0000000000a6d1db in os_event_wait_low (event=0x992eb40, reset_sig_count=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x0000000000afca72 in srv_worker_thread (arg=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3004
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 23 (LWP 17507):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6d113 in os_cond_wait (cond=<optimized out>, fast_mutex=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  0x0000000000a6d1db in os_event_wait_low (event=0x992ecc0, reset_sig_count=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x0000000000afca72 in srv_worker_thread (arg=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/srv/srv0srv.cc:3004
#4  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#5  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 22 (LWP 17508):
+bt
#0  0x0000003636ee14f3 in select () from /lib64/libc.so.6
#1  0x0000000000a6d7ff in os_thread_sleep (tm=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0thread.cc:255
#2  0x0000000000b7a1da in buf_flush_page_cleaner_thread (arg=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/buf/buf0flu.cc:2456
#3  0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#4  0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 21 (LWP 17509):
+bt
#0  0x000000363720b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6d113 in os_cond_wait (cond=<optimized out>, fast_mutex=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:214
#2  0x0000000000a6d1db in os_event_wait_low (event=0x992ef00, reset_sig_count=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:610
#3  0x0000000000b74a8c in buf_dump_thread (arg=<optimized out>) at /bzr/5.6-QA_val/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 20 (LWP 17510):
+bt
#0  0x000000363720b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6cf11 in os_cond_wait_timed (cond=<optimized out>, fast_mutex=<optimized out>, abstime=0x32a56d70) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:177
#2  0x0000000000a6d033 in os_event_wait_time_low (event=0x13594870, time_in_usec=<optimized out>, reset_sig_count=60) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:723
#3  0x0000000000bb1432 in dict_stats_thread (arg=<optimized out>) at /bzr/5.6-QA_val/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 19 (LWP 17511):
+bt
#0  0x000000363720b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000a6cf11 in os_cond_wait_timed (cond=<optimized out>, fast_mutex=<optimized out>, abstime=0x33457cf0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:177
#2  0x0000000000a6d033 in os_event_wait_time_low (event=0x13a272e0, time_in_usec=<optimized out>, reset_sig_count=1) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/os/os0sync.cc:723
#3  0x0000000000b33369 in ib_wqueue_timedwait (wq=0x13a27078, wait_in_usecs=5000000) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/ut/ut0wqueue.cc:154
#4  0x0000000000bdfb2c in fts_optimize_thread (arg=0x13a27078) at /bzr/5.6-QA_val/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 18 (LWP 17512):
+bt
#0  0x000000363720b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000820640 in inline_mysql_cond_timedwait (that=0x1592050 <pool_timer+48>, mutex=0x1592020 <pool_timer>, abstime=0x33e58d60, src_file=<optimized out>, src_line=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/include/mysql/psi/mysql_thread.h:1199
#2  0x0000000000821362 in timer_thread (param=0x1592020 <pool_timer>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:505
#3  0x00000000009eaafa in pfs_spawn_thread (arg=0x19462570) at /bzr/5.6-QA_val/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 17 (LWP 17513):
+bt
#0  0x000000363720f2a5 in sigwait () from /lib64/libpthread.so.0
#1  0x000000000062c12b in signal_hand (arg=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/mysqld.cc:3171
#2  0x00000000009eaafa in pfs_spawn_thread (arg=0x19462810) at /bzr/5.6-QA_val/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 16 (LWP 17514):
+bt
#0  0x000000363720b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000820640 in inline_mysql_cond_timedwait (that=0x1a0b1d00, mutex=0x1582200 <all_groups+512>, abstime=0x1a0b1d60, src_file=<optimized out>, src_line=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/include/mysql/psi/mysql_thread.h:1199
#2  0x0000000000821a5c in get_event (current_thread=0x1a0b1ce0, thread_group=0x1582200 <all_groups+512>, abstime=0x1a0b1d60) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1131
#3  0x00000000008221ea in worker_main (param=0x1582200 <all_groups+512>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1515
#4  0x00000000009eaafa in pfs_spawn_thread (arg=0x19993860) at /bzr/5.6-QA_val/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 17521):
+bt
#0  0x000000363720c69c in pthread_kill () from /lib64/libpthread.so.0
#1  0x00000000006f0cad in handle_fatal_signal (sig=6) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/signal_handler.cc:251
#2  <signal handler called>
#3  0x0000003636e328a5 in raise () from /lib64/libc.so.6
#4  0x0000003636e34085 in abort () from /lib64/libc.so.6
#5  0x0000000000b4cd12 in btr_page_get_next (page=0x11c50000 "\230\351\203|", mtr=0x1a0f0830) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/include/btr0btr.ic:168
#6  0x0000000000b5556c in btr_cur_latch_leaves (page=0x11c2c000 "\f\245\036\v", space=33, zip_size=0, page_no=26, latch_mode=<optimized out>, cursor=0x1a0f0d00, mtr=0x1a0f0830) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/btr/btr0cur.cc:296
#7  0x0000000000b57413 in btr_cur_search_to_nth_level (index=0x34c1dfa8, level=0, tuple=0x1385a828, mode=4, latch_mode=37, cursor=0x1a0f0d00, has_search_latch=0, file=0xdccfd8 "/bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/row/row0ins.cc", line=2370, mtr=0x1a0f0830) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/btr/btr0cur.cc:799
#8  0x0000000000ab0e56 in row_ins_clust_index_entry_low (flags=0, mode=37, index=0x34c1dfa8, n_uniq=1, entry=0x1385a828, n_ext=0, thr=0x34689bb0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/row/row0ins.cc:2370
#9  0x0000000000ab42e5 in row_ins_clust_index_entry (index=0x34c1dfa8, entry=0x1385a828, thr=0x34689bb0, n_ext=0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/row/row0ins.cc:2909
#10 0x0000000000ab4474 in row_ins_index_entry_step (node=0x34689568, thr=0x34689bb0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/row/row0ins.cc:3080
#11 0x0000000000ab454b in row_ins (node=0x34689568, thr=0x34689bb0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/row/row0ins.cc:3220
#12 0x0000000000ab47cb in row_ins_step (thr=0x34689bb0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/row/row0ins.cc:3345
#13 0x0000000000aca664 in row_insert_for_mysql (mysql_rec=<optimized out>, prebuilt=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/row/row0mysql.cc:1313
#14 0x0000000000a10028 in ha_innobase::write_row (this=0x34bdbd30, record=0x1965a7c0 "\377\377\377") at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/handler/ha_innodb.cc:6940
#15 0x0000000000642eb8 in handler::ha_write_row (this=0x34bdbd30, buf=0x1965a7c0 "\377\377\377") at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/handler.cc:7458
#16 0x0000000000761576 in write_record (thd=0x3439ad90, table=0x347816b0, info=0x1a0f1340, update=0x1a0f12c0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_insert.cc:1668
#17 0x0000000000765fe7 in mysql_insert (thd=0x3439ad90, table_list=0x345bb078, fields=..., values_list=..., update_fields=..., update_values=..., duplic=DUP_UPDATE, ignore=true) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_insert.cc:1073
#18 0x000000000077d787 in mysql_execute_command (thd=0x3439ad90) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:3647
#19 0x0000000000780108 in mysql_parse (thd=0x3439ad90, rawbuf=0x3439ad98 "@\344B\001", length=<optimized out>, parser_state=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:6477
#20 0x0000000000780c4d in dispatch_command (command=<optimized out>, thd=0x3439ad90, packet=0x1a0f29e0 "\220\255\071\064", packet_length=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:1355
#21 0x0000000000781985 in do_command (thd=0x3439ad90) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:1049
#22 0x000000000081f74f in threadpool_process_request (thd=0x3439ad90) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_common.cc:312
#23 0x00000000008220a0 in handle_event (connection=0x1945cdb0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1466
#24 0x0000000000822168 in worker_main (param=0x1582400 <all_groups+1024>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1519
#25 0x00000000009eaafa in pfs_spawn_thread (arg=0x1999b130) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#26 0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#27 0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 14 (LWP 17523):
+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  0x00000000007253c5 in inline_mysql_mutex_lock (that=0x157f320 <table_cache_manager>, src_file=<optimized out>, src_line=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/include/mysql/psi/mysql_thread.h:690
#4  0x000000000072a86b in open_table (thd=0x342ff5f0, table_list=0x33f0d520, ot_ctx=0x1a1322c0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_base.cc:2884
#5  0x000000000072be91 in open_and_process_table (thd=0x342ff5f0, lex=0x343019b0, tables=0x33f0d520, counter=0x34301a68, flags=<optimized out>, prelocking_strategy=0x1a1323b0, has_prelocking_list=false, ot_ctx=0x1a1322c0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_base.cc:4592
#6  0x000000000072c202 in open_tables (thd=0x342ff5f0, start=0x1a132378, counter=0x34301a68, flags=0, prelocking_strategy=0x1a1323b0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_base.cc:5099
#7  0x000000000072c856 in open_normal_and_derived_tables (thd=0x342ff5f0, tables=0x33f0d520, flags=0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_base.cc:5798
#8  0x00000000007e7253 in mysql_multi_update_prepare (thd=0x342ff5f0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_update.cc:1337
#9  0x000000000077c129 in mysql_execute_command (thd=0x342ff6d8) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:3530
#10 0x0000000000780108 in mysql_parse (thd=0x342ff5f0, rawbuf=0x342ff5f8 "@\344B\001", length=<optimized out>, parser_state=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:6477
#11 0x0000000000780c4d in dispatch_command (command=<optimized out>, thd=0x342ff5f0, packet=0x1a1339e0 "\360\365/4", packet_length=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:1355
#12 0x0000000000781985 in do_command (thd=0x342ff5f0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:1049
#13 0x000000000081f74f in threadpool_process_request (thd=0x342ff5f0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_common.cc:312
#14 0x00000000008220a0 in handle_event (connection=0x33e998d0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1466
#15 0x0000000000822168 in worker_main (param=0x1582400 <all_groups+1024>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1519
#16 0x00000000009eaafa in pfs_spawn_thread (arg=0x1961a2f0) at /bzr/5.6-QA_val/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 13 (LWP 21459):
+bt
#0  0x000000363720e94c in recv () from /lib64/libpthread.so.0
#1  0x0000000000c8a100 in inline_mysql_socket_recv (src_file=<optimized out>, src_line=<optimized out>, mysql_socket=..., buf=0x35005e70, n=4, flags=64) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/include/mysql/psi/mysql_socket.h:801
#2  0x0000000000c8a191 in vio_read (vio=0x343680a0, buf=0x35005e70 "\021", size=4) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/vio/viosocket.c:114
#3  0x00000000006e595f in net_read_raw_loop (net=0x34a4a7d0, count=4) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/net_serv.cc:663
#4  0x00000000006e5a70 in net_read_packet_header (net=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/net_serv.cc:745
#5  0x00000000006e65f4 in net_read_packet (net=0x34a4a7d0, complen=0x1a174b98) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/net_serv.cc:810
#6  0x00000000006e685c in my_net_read (net=0x34a4a7d0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/net_serv.cc:888
#7  0x0000000000781915 in do_command (thd=0x34a4a570) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:983
#8  0x000000000081f74f in threadpool_process_request (thd=0x34a4a570) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_common.cc:312
#9  0x00000000008220a0 in handle_event (connection=0x349908f0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1466
#10 0x0000000000822168 in worker_main (param=0x1582600 <all_groups+1536>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1519
#11 0x00000000009eaafa in pfs_spawn_thread (arg=0x138e3300) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#12 0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#13 0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 12 (LWP 21466):
+bt
#0  0x000000363720e94c in recv () from /lib64/libpthread.so.0
#1  0x0000000000c8a100 in inline_mysql_socket_recv (src_file=<optimized out>, src_line=<optimized out>, mysql_socket=..., buf=0x344022a0, n=17, flags=64) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/include/mysql/psi/mysql_socket.h:801
#2  0x0000000000c8a191 in vio_read (vio=0x34785090, buf=0x344022a0 "\003set autocommit=1", size=17) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/vio/viosocket.c:114
#3  0x00000000006e595f in net_read_raw_loop (net=0x34a9f320, count=17) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/net_serv.cc:663
#4  0x00000000006e66a5 in net_read_packet (net=0x34a9f320, complen=0x1a1b5b98) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/net_serv.cc:848
#5  0x00000000006e685c in my_net_read (net=0x34a9f320) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/net_serv.cc:888
#6  0x0000000000781915 in do_command (thd=0x34a9f0c0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:983
#7  0x000000000081f74f in threadpool_process_request (thd=0x34a9f0c0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_common.cc:312
#8  0x00000000008220a0 in handle_event (connection=0x3507b8c0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1466
#9  0x0000000000822168 in worker_main (param=0x1582800 <all_groups+2048>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1519
#10 0x00000000009eaafa in pfs_spawn_thread (arg=0x1385dc70) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#11 0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#12 0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 11 (LWP 21467):
+bt
#0  0x000000363720e1e5 in __lll_unlock_wake () from /lib64/libpthread.so.0
#1  0x000000363720a6f7 in _L_unlock_657 () from /lib64/libpthread.so.0
#2  0x000000363720a65f in pthread_mutex_unlock () from /lib64/libpthread.so.0
#3  0x0000000000b07105 in sync_array_wait_event (arr=0x9d51940, index=1) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/sync/sync0arr.cc:424
#4  0x0000000000b0a179 in mutex_spin_wait (mutex=0x15b8e60 <sync_thread_mutex>, file_name=0xddeb98 "/bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/sync/sync0sync.cc", line=1091) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/sync/sync0sync.cc:584
#5  0x0000000000b0a330 in pfs_mutex_enter_func (mutex=0x15b8e60 <sync_thread_mutex>, file_name=0xddeb98 "/bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/sync/sync0sync.cc", line=1091) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/include/sync0sync.ic:251
#6  0x0000000000b0a76b in sync_thread_add_level (latch=0x1384f728, level=1000, relock=0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/sync/sync0sync.cc:1091
#7  0x0000000000b0b562 in mutex_set_debug_info (mutex=0x1384f728, file_name=0xdee7b8 "/bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/dict/dict0dict.cc", line=479) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/sync/sync0sync.cc:619
#8  0x0000000000b916c0 in pfs_mutex_enter_func (mutex=0x1384f728, file_name=0xdee7b8 "/bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/dict/dict0dict.cc", line=479) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/include/sync0sync.ic:251
#9  0x0000000000b9b848 in dict_table_close (table=0x194f6508, dict_locked=0, try_drop=1) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/dict/dict0dict.cc:479
#10 0x0000000000acaab9 in row_prebuilt_free (prebuilt=0x345fce88, dict_locked=0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/row/row0mysql.cc:894
#11 0x0000000000a072ef in ha_innobase::close (this=0x34606690) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/handler/ha_innodb.cc:5410
#12 0x000000000064022d in handler::ha_close (this=0x34606690) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/handler.cc:2586
#13 0x0000000000811a09 in closefrm (table=0x349b3280, free_share=true) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/table.cc:2436
#14 0x0000000000728a8f in intern_close_table (table=0x349b3280) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_base.cc:821
#15 0x0000000000815da5 in Table_cache_manager::free_table (this=0x157f320 <table_cache_manager>, thd=0x353d7770, remove_type=TDC_RT_REMOVE_ALL, share=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/table_cache.cc:380
#16 0x000000000071f5cb in tdc_remove_table (thd=0x353d7770, remove_type=TDC_RT_REMOVE_ALL, db=0x33e92e20 "test", table_name=0x33e92800 "table100_innodb_default_int_autoinc", has_lock=false) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_base.cc:9334
#17 0x00000000009054f1 in Sql_cmd_truncate_table::lock_table (this=0x33e92e28, thd=0x353d7770, table_ref=0x33e928c0, hton_can_recreate=0x1a1f541f) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_truncate.cc:373
#18 0x0000000000905e4a in Sql_cmd_truncate_table::truncate_table (this=0x33e92e28, thd=0x353d7770, table_ref=0x33e928c0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_truncate.cc:444
#19 0x000000000090603a in Sql_cmd_truncate_table::execute (this=0x33e92e28, thd=0x353d7770) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_truncate.cc:519
#20 0x000000000077a9c3 in mysql_execute_command (thd=0x353d7858) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:5157
#21 0x0000000000780108 in mysql_parse (thd=0x353d7770, rawbuf=0x353d7778 "@\344B\001", length=<optimized out>, parser_state=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:6477
#22 0x0000000000780c4d in dispatch_command (command=<optimized out>, thd=0x353d7770, packet=0x1a1f69e0 "pw=5", packet_length=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:1355
#23 0x0000000000781985 in do_command (thd=0x353d7770) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:1049
#24 0x000000000081f74f in threadpool_process_request (thd=0x353d7770) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_common.cc:312
#25 0x00000000008220a0 in handle_event (connection=0x13893960) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1466
#26 0x0000000000822168 in worker_main (param=0x1582a00 <all_groups+2560>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1519
#27 0x00000000009eaafa in pfs_spawn_thread (arg=0x195b83f0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#28 0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#29 0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 10 (LWP 21468):
+bt
#0  code_state () at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/dbug/dbug.c:379
#1  0x0000000000c5ad09 in _db_enabled_ () at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/dbug/dbug.c:1391
#2  0x0000000000996808 in my_malloc (size=12328, my_flags=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/mysys/my_malloc.c:65
#3  0x00000000009909f6 in alloc_root (mem_root=0x351ff3c8, length=12312) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/mysys/my_alloc.c:224
#4  0x00000000006ef6a3 in enumerate_sys_vars (thd=<optimized out>, sorted=true, type=OPT_SESSION) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/set_var.cc:470
#5  0x00000000007b2149 in fill_variables (thd=0x351fbd90, tables=<optimized out>, cond=0x0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_show.cc:7008
#6  0x00000000007abc6d in do_fill_table (thd=0x351fbd90, table_list=0x346c4690, join_table=0x346c5d18) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_show.cc:7715
#7  0x00000000007abf56 in get_schema_tables_result (join=0x346c4ff0, executed_place=PROCESSED_BY_JOIN_EXEC) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_show.cc:7816
#8  0x00000000007a39f5 in JOIN::prepare_result (this=0x346c4ff0, columns_list=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_select.cc:823
#9  0x000000000075a6da in JOIN::exec (this=0x346c4ff0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_executor.cc:116
#10 0x00000000007a3e08 in mysql_execute_select (thd=0x351fbd90, select_lex=0x351fe860, free_join=true) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_select.cc:1101
#11 0x00000000007a4564 in mysql_select (thd=0x351fbd90, tables=0x346c4690, wild_num=0, fields=..., conds=<optimized out>, order=0x351fea28, group=0x351fe960, having=0x0, select_options=2684619520, result=0x346c4fc8, unit=0x351fe218, select_lex=0x351fe860) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_select.cc:1222
#12 0x00000000007a4718 in handle_select (thd=0x351fbd90, result=0x346c4fc8, setup_tables_done_option=0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_select.cc:111
#13 0x000000000077887d in execute_sqlcom_select (thd=0x351fbd90, all_tables=0x346c4690) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:5305
#14 0x000000000077bfee in mysql_execute_command (thd=0x351fbe78) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:2762
#15 0x0000000000780108 in mysql_parse (thd=0x351fbd90, rawbuf=0x351fbd98 "@\344B\001", length=<optimized out>, parser_state=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:6477
#16 0x0000000000780c4d in dispatch_command (command=<optimized out>, thd=0x351fbd90, packet=0x1a2379e0 "\220\275\037\065", packet_length=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:1355
#17 0x0000000000781985 in do_command (thd=0x351fbd90) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:1049
#18 0x000000000081f74f in threadpool_process_request (thd=0x351fbd90) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_common.cc:312
#19 0x00000000008220a0 in handle_event (connection=0x199a1ad0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1466
#20 0x0000000000822168 in worker_main (param=0x1582c00 <all_groups+3072>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1519
#21 0x00000000009eaafa in pfs_spawn_thread (arg=0x196477b0) at /bzr/5.6-QA_val/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 9 (LWP 21469):
+bt
#0  ut_delay (delay=4) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/ut/ut0ut.cc:410
#1  0x0000000000b0a0bb in mutex_spin_wait (mutex=0x15b8e60 <sync_thread_mutex>, file_name=0xddeb98 "/bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/sync/sync0sync.cc", line=1091) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/sync/sync0sync.cc:508
#2  0x0000000000b0a330 in pfs_mutex_enter_func (mutex=0x15b8e60 <sync_thread_mutex>, file_name=0xddeb98 "/bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/sync/sync0sync.cc", line=1091) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/include/sync0sync.ic:251
#3  0x0000000000b0a76b in sync_thread_add_level (latch=0xad94328, level=146, relock=0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/sync/sync0sync.cc:1091
#4  0x0000000000b0b562 in mutex_set_debug_info (mutex=0xad94328, file_name=0xdb7f00 "/bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/include/buf0buf.ic", line=1351) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/sync/sync0sync.cc:619
#5  0x0000000000a64d60 in pfs_mutex_enter_func (mutex=0xad94328, file_name=0xdb7f00 "/bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/include/buf0buf.ic", line=1351) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/include/sync0sync.ic:251
#6  0x0000000000a651b9 in buf_page_release (block=0xad94250, rw_latch=1) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/include/buf0buf.ic:1351
#7  0x0000000000a655cb in mtr_memo_pop_all (mtr=0x1a275190) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/mtr/mtr0mtr.cc:133
#8  0x0000000000a662cf in mtr_commit (mtr=0x1a275190) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/mtr/mtr0mtr.cc:326
#9  0x0000000000ae481a in row_search_for_mysql (buf=0x34e22608 "", mode=1, prebuilt=0x34c2bda8, match_mode=0, direction=1) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/row/row0sel.cc:5077
#10 0x0000000000a0ef5a in ha_innobase::general_fetch (this=0x3533b730, buf=0x34e22608 "", direction=1, match_mode=0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/handler/ha_innodb.cc:8143
#11 0x0000000000a0f252 in ha_innobase::rnd_next (this=0x3533b730, buf=0x34e22608 "") at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/handler/ha_innodb.cc:8369
#12 0x000000000063ffa7 in handler::ha_rnd_next (this=0x3533b730, buf=0x34e22608 "") at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/handler.cc:2703
#13 0x0000000000c4911d in ha_partition::rnd_next (this=0x1384a7a0, buf=0x34e22608 "") at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/ha_partition.cc:4694
#14 0x000000000063ff5a in handler::ha_rnd_next (this=0x1384a7a0, buf=0x34e22608 "") at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/handler.cc:2703
#15 0x00000000008bd94c in rr_sequential (info=0x34ae54d8) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/records.cc:478
#16 0x00000000007590da in sub_select (join=0x34ae47d8, join_tab=0x34ae5448, end_of_records=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_executor.cc:1256
#17 0x000000000075a213 in do_select (join=0x34ae47d8) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_executor.cc:930
#18 0x000000000075a938 in JOIN::exec (this=0x34ae47d8) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_executor.cc:191
#19 0x00000000007a3e08 in mysql_execute_select (thd=0x357297f0, select_lex=0x34ac5018, free_join=true) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_select.cc:1101
#20 0x00000000007a4564 in mysql_select (thd=0x357297f0, tables=0x35185b28, wild_num=0, fields=..., conds=<optimized out>, order=0x34ac51e0, group=0x34ac5118, having=0x0, select_options=2147749632, result=0x34ac5e48, unit=0x34ac49d0, select_lex=0x34ac5018) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_select.cc:1222
#21 0x00000000007a4718 in handle_select (thd=0x357297f0, result=0x34ac5e48, setup_tables_done_option=0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_select.cc:111
#22 0x000000000077887d in execute_sqlcom_select (thd=0x357297f0, all_tables=0x35185b28) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:5305
#23 0x000000000077bfee in mysql_execute_command (thd=0x34ac2630) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:2762
#24 0x00000000008c04a6 in sp_instr_stmt::exec_core (this=0x351860f8, thd=0x357297f0, nextp=0x1a277378) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sp_instr.cc:898
#25 0x00000000008c0f04 in sp_lex_instr::reset_lex_and_exec_core (this=0x351860f8, thd=0x357297f0, nextp=0x1a277378, open_tables=false) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sp_instr.cc:382
#26 0x00000000008c12b4 in sp_lex_instr::validate_lex_and_execute_core (this=0x351860f8, thd=0x357297f0, nextp=0x1a277378, open_tables=false) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sp_instr.cc:610
#27 0x00000000008c16b8 in sp_instr_stmt::execute (this=0x351860f8, thd=0x357297f0, nextp=0x1a277378) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sp_instr.cc:801
#28 0x00000000006f7f68 in sp_head::execute (this=0x34ac3ea0, thd=0x357297f0, merge_da_on_success=true) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sp_head.cc:645
#29 0x00000000006f8ce5 in sp_head::execute_procedure (this=0x34ac3ea0, thd=0x357297f0, args=0x3572c818) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sp_head.cc:1307
#30 0x000000000077ce11 in mysql_execute_command (thd=0x357298d8) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:4781
#31 0x0000000000780108 in mysql_parse (thd=0x357297f0, rawbuf=0x357297f8 "@\344B\001", length=<optimized out>, parser_state=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:6477
#32 0x0000000000780e40 in dispatch_command (command=<optimized out>, thd=0x357297f0, packet=0x1a2789e0 "\360\227r5", packet_length=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:1430
#33 0x0000000000781985 in do_command (thd=0x357297f0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:1049
#34 0x000000000081f74f in threadpool_process_request (thd=0x357297f0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_common.cc:312
#35 0x00000000008220a0 in handle_event (connection=0x19f30c60) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1466
#36 0x0000000000822168 in worker_main (param=0x1582e00 <all_groups+3584>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1519
#37 0x00000000009eaafa in pfs_spawn_thread (arg=0x19658a70) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#38 0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#39 0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 8 (LWP 21476):
+bt
#0  0x000000363720eacc in send () from /lib64/libpthread.so.0
#1  0x0000000000c89f50 in inline_mysql_socket_send (src_file=<optimized out>, src_line=<optimized out>, mysql_socket=..., buf=0x3532db30, n=241, flags=64) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/include/mysql/psi/mysql_socket.h:759
#2  0x0000000000c89fd1 in vio_write (vio=0x350028b0, buf=0x3532db30 "\001", size=241) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/vio/viosocket.c:192
#3  0x00000000006e5ce6 in net_write_raw_loop (net=0x351d9c90, buf=0x3532db30 "\001", count=241) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/net_serv.cc:494
#4  0x00000000006e5dec in net_write_packet (net=0x351d9c90, packet=0x3532db30 "\001", length=241) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/net_serv.cc:630
#5  0x00000000006e6031 in net_flush (net=0x351d9c90) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/net_serv.cc:220
#6  0x00000000006ead98 in net_send_eof (thd=0x351d9a30, server_status=34, statement_warn_count=0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/protocol.cc:297
#7  0x00000000006eaf5f in Protocol::send_eof (this=0x351d9f60, server_status=34, statement_warn_count=0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/protocol.cc:558
#8  0x00000000006ea352 in Protocol::end_statement (this=0x351d9f60) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/protocol.cc:505
#9  0x0000000000780377 in dispatch_command (command=<optimized out>, thd=0x351d9a30, packet=<optimized out>, packet_length=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:1770
#10 0x0000000000781985 in do_command (thd=0x351d9a30) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:1049
#11 0x000000000081f74f in threadpool_process_request (thd=0x351d9a30) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_common.cc:312
#12 0x00000000008220a0 in handle_event (connection=0x34321a50) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1466
#13 0x0000000000822168 in worker_main (param=0x1582000 <all_groups>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1519
#14 0x00000000009eaafa in pfs_spawn_thread (arg=0x9d4c2f0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#15 0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#16 0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 7 (LWP 21477):
+bt
#0  DoTrace (cs=0x344e7570) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/dbug/dbug.c:1866
#1  0x0000000000c5baf6 in _db_return_ (_line_=291, _stack_frame_=0x1a2f85f0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/dbug/dbug.c:1314
#2  0x0000000000980050 in my_hash_first_from_hash_value (hash=0x1599bc0 <getopt_constraint_init(char)::my_option_constraints>, hash_value=<optimized out>, key=0x8d40368 "myisam_sort_buffer_size", length=23, current_record=0x1a2f865c) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/mysys/hash.c:291
#3  0x0000000000980171 in my_hash_search (hash=<optimized out>, key=<optimized out>, length=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/mysys/hash.c:216
#4  0x00000000009a73db in getopt_constraint_find (name=0x8d40368 "myisam_sort_buffer_size", length=23, create=0 '\000') at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/mysys_ssl/my_getopt.cc:161
#5  0x00000000009a74ac in getopt_constraint_get_hidden_value (name=<optimized out>, length=<optimized out>, create=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/mysys_ssl/my_getopt.cc:221
#6  0x00000000006ef6e1 in enumerate_sys_vars (thd=<optimized out>, sorted=false, type=OPT_GLOBAL) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/set_var.cc:481
#7  0x00000000007b2149 in fill_variables (thd=0x19f8a160, tables=<optimized out>, cond=0x34367470) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_show.cc:7008
#8  0x00000000007abc6d in do_fill_table (thd=0x19f8a160, table_list=0x34366cf8, join_table=0x352689a0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_show.cc:7715
#9  0x00000000007abf56 in get_schema_tables_result (join=0x34367ac8, executed_place=PROCESSED_BY_JOIN_EXEC) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_show.cc:7816
#10 0x00000000007a39f5 in JOIN::prepare_result (this=0x34367ac8, columns_list=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_select.cc:823
#11 0x000000000075a6da in JOIN::exec (this=0x34367ac8) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_executor.cc:116
#12 0x000000000088759a in subselect_single_select_engine::exec (this=0x34367728) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/item_subselect.cc:2798
#13 0x0000000000889f9b in Item_subselect::exec (this=0x34367608) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/item_subselect.cc:641
#14 0x0000000000883f9d in Item_singlerow_subselect::val_str (this=0x34367608, str=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/item_subselect.cc:1094
#15 0x0000000000807066 in Sys_var_flagset::do_check (this=0x15747a0 <Sys_optimizer_switch>, thd=0x19f8a160, var=0x34367760) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sys_vars.h:1009
#16 0x00000000006efd7d in sys_var::check (this=0x15747a0 <Sys_optimizer_switch>, thd=0x19f8a160, var=0x34367760) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/set_var.cc:213
#17 0x00000000006f0007 in set_var::check (this=0x34367760, thd=0x19f8a160) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/set_var.cc:632
#18 0x00000000006ef59b in sql_set_variables (thd=0x19f8a160, var_list=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/set_var.cc:572
#19 0x000000000077b579 in mysql_execute_command (thd=0x19f8a248) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:3918
#20 0x0000000000780108 in mysql_parse (thd=0x19f8a160, rawbuf=0x19f8a168 "@\344B\001", length=<optimized out>, parser_state=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:6477
#21 0x0000000000780c4d in dispatch_command (command=<optimized out>, thd=0x19f8a160, packet=0x1a2fa9e0 "`\241\370\031", packet_length=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:1355
#22 0x0000000000781985 in do_command (thd=0x19f8a160) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:1049
#23 0x000000000081f74f in threadpool_process_request (thd=0x19f8a160) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_common.cc:312
#24 0x00000000008220a0 in handle_event (connection=0x33e6b840) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1466
#25 0x0000000000822168 in worker_main (param=0x1582200 <all_groups+512>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1519
#26 0x00000000009eaafa in pfs_spawn_thread (arg=0x195f7930) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#27 0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#28 0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 6 (LWP 21533):
+bt
#0  sync_thread_level_arrays_find_slot () at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/sync/sync0sync.cc:749
#1  0x0000000000b0a3aa in sync_thread_reset_level (latch=0x1354d268) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/sync/sync0sync.cc:1390
#2  0x0000000000a64da6 in mutex_exit_func (mutex=0x1354d268) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/include/sync0sync.ic:168
#3  0x0000000000a65f4a in mtr_add_dirtied_pages_to_flush_list (mtr=0x1a338a20) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/mtr/mtr0mtr.cc:218
#4  0x0000000000a662c7 in mtr_commit (mtr=0x1a338a20) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/mtr/mtr0mtr.cc:323
#5  0x0000000000b2d6b0 in trx_undo_assign_undo (trx=0x138d5ae8, type=1) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/trx/trx0undo.cc:1813
#6  0x0000000000b1a2ce in trx_undo_report_row_operation (flags=<optimized out>, op_type=1, thr=<optimized out>, index=0x19537bc8, clust_entry=0x19fc2a98, update=0x0, cmpl_info=0, rec=0x0, offsets=0x0, roll_ptr=0x1a339518) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/trx/trx0rec.cc:1261
#7  0x0000000000b5335b in btr_cur_ins_lock_and_undo (flags=0, cursor=0x1a339bb0, entry=0x19fc2a98, thr=0x35110d10, mtr=0x1a3396e0, inherit=0x1a339630) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/btr/btr0cur.cc:1283
#8  0x0000000000b54b59 in btr_cur_optimistic_insert (flags=0, cursor=0x1a339bb0, offsets=0x1a339c48, heap=0x1a339c38, entry=0x19fc2a98, rec=0x1a339c30, big_rec=0x1a339c40, n_ext=0, thr=0x35110d10, mtr=0x1a3396e0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/btr/btr0cur.cc:1510
#9  0x0000000000ab0fc6 in row_ins_clust_index_entry_low (flags=0, mode=439589944, index=0x19537bc8, n_uniq=<optimized out>, entry=0x19fc2a98, n_ext=0, thr=0x35110d10) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/row/row0ins.cc:2506
#10 0x0000000000ab42e5 in row_ins_clust_index_entry (index=0x19537bc8, entry=0x19fc2a98, thr=0x35110d10, n_ext=0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/row/row0ins.cc:2909
#11 0x0000000000ab4474 in row_ins_index_entry_step (node=0x351106c8, thr=0x35110d10) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/row/row0ins.cc:3080
#12 0x0000000000ab454b in row_ins (node=0x351106c8, thr=0x35110d10) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/row/row0ins.cc:3220
#13 0x0000000000ab47cb in row_ins_step (thr=0x35110d10) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/row/row0ins.cc:3345
#14 0x0000000000aca664 in row_insert_for_mysql (mysql_rec=<optimized out>, prebuilt=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/row/row0mysql.cc:1313
#15 0x0000000000a10028 in ha_innobase::write_row (this=0x34c8b310, record=0x34f11d98 "\377\377\377") at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/innobase/handler/ha_innodb.cc:6940
#16 0x0000000000642f57 in handler::ha_write_row (this=0x34c8b310, buf=0x34f11d98 "\377\377\377") at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/handler.cc:7458
#17 0x0000000000c4edca in ha_partition::write_row (this=0x340b8c30, buf=0x34f11d98 "\377\377\377") at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/ha_partition.cc:3962
#18 0x0000000000642eb8 in handler::ha_write_row (this=0x340b8c30, buf=0x34f11d98 "\377\377\377") at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/handler.cc:7458
#19 0x000000000076140c in write_record (thd=0x3481cae0, table=0x34938180, info=0x1a33a340, update=0x1a33a2c0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_insert.cc:1935
#20 0x0000000000765fe7 in mysql_insert (thd=0x3481cae0, table_list=0x3501e200, fields=..., values_list=..., update_fields=..., update_values=..., duplic=DUP_ERROR, ignore=false) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_insert.cc:1073
#21 0x000000000077d787 in mysql_execute_command (thd=0x3481cae0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:3647
#22 0x0000000000780108 in mysql_parse (thd=0x3481cae0, rawbuf=0x3481cae8 "@\344B\001", length=<optimized out>, parser_state=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:6477
#23 0x0000000000780c4d in dispatch_command (command=<optimized out>, thd=0x3481cae0, packet=0x1a33b9e0 "\340ʁ4", packet_length=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:1355
#24 0x0000000000781985 in do_command (thd=0x3481cae0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:1049
#25 0x000000000081f74f in threadpool_process_request (thd=0x3481cae0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_common.cc:312
#26 0x00000000008220a0 in handle_event (connection=0x194ff0d0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1466
#27 0x0000000000822168 in worker_main (param=0x1582600 <all_groups+1536>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1519
#28 0x00000000009eaafa in pfs_spawn_thread (arg=0x33e88840) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/storage/perfschema/pfs.cc:1858
#29 0x0000003637207851 in start_thread () from /lib64/libpthread.so.0
#30 0x0000003636ee890d in clone () from /lib64/libc.so.6

Thread 5 (LWP 21535):
+bt
#0  0x000000363720b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000820640 in inline_mysql_cond_timedwait (that=0x1a37cd00, mutex=0x1582800 <all_groups+2048>, abstime=0x1a37cd60, src_file=<optimized out>, src_line=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/include/mysql/psi/mysql_thread.h:1199
#2  0x0000000000821a5c in get_event (current_thread=0x1a37cce0, thread_group=0x1582800 <all_groups+2048>, abstime=0x1a37cd60) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1131
#3  0x00000000008221ea in worker_main (param=0x1582800 <all_groups+2048>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1515
#4  0x00000000009eaafa in pfs_spawn_thread (arg=0x8d27cd0) at /bzr/5.6-QA_val/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 21537):
+bt
#0  0x000000363720b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000820640 in inline_mysql_cond_timedwait (that=0x1a3bdd00, mutex=0x1582a00 <all_groups+2560>, abstime=0x1a3bdd60, src_file=<optimized out>, src_line=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/include/mysql/psi/mysql_thread.h:1199
#2  0x0000000000821a5c in get_event (current_thread=0x1a3bdce0, thread_group=0x1582a00 <all_groups+2560>, abstime=0x1a3bdd60) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1131
#3  0x00000000008221ea in worker_main (param=0x1582a00 <all_groups+2560>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1515
#4  0x00000000009eaafa in pfs_spawn_thread (arg=0x1385cd60) at /bzr/5.6-QA_val/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 21540):
+bt
#0  0x000000363720b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000820640 in inline_mysql_cond_timedwait (that=0x1a3fed00, mutex=0x1582c00 <all_groups+3072>, abstime=0x1a3fed60, src_file=<optimized out>, src_line=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/include/mysql/psi/mysql_thread.h:1199
#2  0x0000000000821a5c in get_event (current_thread=0x1a3fece0, thread_group=0x1582c00 <all_groups+3072>, abstime=0x1a3fed60) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1131
#3  0x00000000008221ea in worker_main (param=0x1582c00 <all_groups+3072>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1515
#4  0x00000000009eaafa in pfs_spawn_thread (arg=0x13879190) at /bzr/5.6-QA_val/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 21541):
+bt
#0  my_utf8_uni (cs=0x1557980 <my_charset_utf8_general_ci>, pwc=0x36297058, s=0x3629765d "NNECT_ATTRS_SIZE", e=0x3629766d "") at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/strings/ctype-utf8.c:5291
#1  0x0000000000c6a8d2 in my_well_formed_len_mb (cs=0x1557980 <my_charset_utf8_general_ci>, b=0x3629765d "NNECT_ATTRS_SIZE", e=0x3629766d "", pos=35, error=0x362970e8) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/strings/ctype-mb.c:415
#2  0x00000000007c0782 in well_formed_copy_nchars (to_cs=0x1557980 <my_charset_utf8_general_ci>, to=0x19fbd052 "", to_length=192, from_cs=0x1557980 <my_charset_utf8_general_ci>, from=0x36297640 "PERFORMANCE_SCHEMA_SESSION_CONNECT_ATTRS_SIZE", from_length=45, nchars=64, well_formed_error_pos=0x36297168, cannot_convert_error_pos=0x36297160, from_end_pos=0x36297158) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_string.cc:981
#3  0x0000000000868d76 in Field_varstring::store (this=0x3402fb10, from=0x36297640 "PERFORMANCE_SCHEMA_SESSION_CONNECT_ATTRS_SIZE", length=45, cs=0x1557980 <my_charset_utf8_general_ci>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/field.cc:7163
#4  0x00000000007b1bb7 in show_status_array (thd=0x199e67e0, wild=0x0, variables=0x34c13dc0, value_type=OPT_GLOBAL, status_var=0x0, prefix=<optimized out>, table=0x3402dcf0, ucase_names=true, cond=0x3409ad20) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_show.cc:2481
#5  0x00000000007b217e in fill_variables (thd=0x199e67e0, tables=<optimized out>, cond=0x3409ad20) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_show.cc:7008
#6  0x00000000007abc6d in do_fill_table (thd=0x199e67e0, table_list=0x3409a5a8, join_table=0x3440b210) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_show.cc:7715
#7  0x00000000007abf56 in get_schema_tables_result (join=0x3409b378, executed_place=PROCESSED_BY_JOIN_EXEC) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_show.cc:7816
#8  0x00000000007a39f5 in JOIN::prepare_result (this=0x3409b378, columns_list=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_select.cc:823
#9  0x000000000075a6da in JOIN::exec (this=0x3409b378) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_executor.cc:116
#10 0x000000000088759a in subselect_single_select_engine::exec (this=0x3409afd8) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/item_subselect.cc:2798
#11 0x0000000000889f9b in Item_subselect::exec (this=0x3409aeb8) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/item_subselect.cc:641
#12 0x0000000000883f9d in Item_singlerow_subselect::val_str (this=0x3409aeb8, str=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/item_subselect.cc:1094
#13 0x0000000000807066 in Sys_var_flagset::do_check (this=0x15747a0 <Sys_optimizer_switch>, thd=0x199e67e0, var=0x3409b010) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sys_vars.h:1009
#14 0x00000000006efd7d in sys_var::check (this=0x15747a0 <Sys_optimizer_switch>, thd=0x199e67e0, var=0x3409b010) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/set_var.cc:213
#15 0x00000000006f0007 in set_var::check (this=0x3409b010, thd=0x199e67e0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/set_var.cc:632
#16 0x00000000006ef59b in sql_set_variables (thd=0x199e67e0, var_list=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/set_var.cc:572
#17 0x000000000077b579 in mysql_execute_command (thd=0x199e68c8) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:3918
#18 0x0000000000780108 in mysql_parse (thd=0x199e67e0, rawbuf=0x199e67e8 "@\344B\001", length=<optimized out>, parser_state=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:6477
#19 0x0000000000780c4d in dispatch_command (command=<optimized out>, thd=0x199e67e0, packet=0x362999e0 "\340g\236\031", packet_length=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:1355
#20 0x0000000000781985 in do_command (thd=0x199e67e0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/sql_parse.cc:1049
#21 0x000000000081f74f in threadpool_process_request (thd=0x199e67e0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_common.cc:312
#22 0x00000000008220a0 in handle_event (connection=0x347dcaa0) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1466
#23 0x0000000000822168 in worker_main (param=0x1582e00 <all_groups+3584>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1519
#24 0x00000000009eaafa in pfs_spawn_thread (arg=0x13894dd0) at /bzr/5.6-QA_val/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 1 (LWP 21543):
+bt
#0  0x000000363720b7bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000000000820640 in inline_mysql_cond_timedwait (that=0x362dad00, mutex=0x1582000 <all_groups>, abstime=0x362dad60, src_file=<optimized out>, src_line=<optimized out>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/include/mysql/psi/mysql_thread.h:1199
#2  0x0000000000821a5c in get_event (current_thread=0x362dace0, thread_group=0x1582000 <all_groups>, abstime=0x362dad60) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1131
#3  0x00000000008221ea in worker_main (param=0x1582000 <all_groups>) at /bzr/5.6-QA_val/Percona-Server-5.6.12-rc60.4/sql/threadpool_unix.cc:1515
#4  0x00000000009eaafa in pfs_spawn_thread (arg=0x138cf4a0) at /bzr/5.6-QA_val/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
(gdb) +set logging off