The innodb.innodb-zip fails in 5.5.11

innodb.innodb-zip fails in lp:percona-server/5.5.11. It passes in the upstream server and Percona Server 5.5.10, so it's a regression.

The failure can be observed on both Linux and Mac OS X.

CURRENT_TEST: innodb.innodb-zip
mysqltest: At line 64: query 'insert into t1 select 1, b from t2' failed: 2013: Lost connection to MySQL server during query

The result from queries just before the failure was:
< snip >
alter table t1 row_format=dynamic;
SELECT table_schema, table_name, row_format
FROM information_schema.tables WHERE engine='innodb';
table_schema table_name row_format
test t1 Dynamic
alter table t1 row_format=compact;
SELECT table_schema, table_name, row_format
FROM information_schema.tables WHERE engine='innodb';
table_schema table_name row_format
test t1 Compact
alter table t1 row_format=redundant;
SELECT table_schema, table_name, row_format
FROM information_schema.tables WHERE engine='innodb';
table_schema table_name row_format
test t1 Redundant
drop table t1;
create table t1(a int not null, b text, index(b(10))) engine=innodb
key_block_size=1;
create table t2(b text)engine=innodb;
insert into t2 values(concat('1abcdefghijklmnopqrstuvwxyz', repeat('A',5000)));

More results from queries before failure can be found in /home/alexey.kopytov/src/percona/5.5.11/Percona-Server-debug/mysql-test/var/log/innodb-zip.log

Server [mysqld.1 - pid: 19568, winpid: 19568, exit: 256] failed during test run
Server log from this test:
----------SERVER LOG START-----------
110410 12:11:20 [Note] Flashcache bypass: disabled
110410 12:11:20 [Note] Flashcache setup error is : open flash device failed

110410 12:11:20 InnoDB: !!!!!!!! UNIV_DEBUG switched on !!!!!!!!!
110410 12:11:20 InnoDB: The InnoDB memory heap is disabled
110410 12:11:20 InnoDB: Mutexes and rw_locks use GCC atomic builtins
110410 12:11:20 InnoDB: Compressed tables use zlib 1.2.3
110410 12:11:20 InnoDB: Initializing buffer pool, size = 32.0M
110410 12:11:20 InnoDB: Completed initialization of buffer pool
110410 12:11:20 InnoDB: highest supported file format is Barracuda.
110410 12:11:20 InnoDB: Waiting for the background threads to start
110410 12:11:21 Percona XtraDB (http://www.percona.com) 1.1.6-12.1 started; log sequence number 1597945
110410 12:11:21 [Note] Event Scheduler: Loaded 0 events
110410 12:11:21 [Note] /home/alexey.kopytov/src/percona/5.5.11/Percona-Server-debug/sql/mysqld: ready for connections.
Version: '5.5.11-debug-log' socket: '/home/alexey.kopytov/src/percona/5.5.11/Percona-Server-debug/mysql-test/var/tmp/mysqld.1.sock' port: 13000 Source distribution
InnoDB: DEBUG: update_statistics for test/t0.
InnoDB: DEBUG: update_statistics for test/t00.
InnoDB: DEBUG: update_statistics for test/t1.
InnoDB: DEBUG: update_statistics for test/t2.
InnoDB: DEBUG: update_statistics for test/t3.
InnoDB: DEBUG: update_statistics for test/t4.
InnoDB: DEBUG: update_statistics for test/t5.
InnoDB: DEBUG: update_statistics for test/t6.
InnoDB: DEBUG: update_statistics for test/t7.
InnoDB: DEBUG: update_statistics for test/t8.
InnoDB: DEBUG: update_statistics for test/t9.
InnoDB: DEBUG: update_statistics for test/t10.
InnoDB: DEBUG: update_statistics for test/t11.
InnoDB: DEBUG: update_statistics for test/t12.
InnoDB: DEBUG: update_statistics for test/t13.
InnoDB: DEBUG: update_statistics for test/t14.
InnoDB: DEBUG: update_statistics for test/t0.
InnoDB: DEBUG: update_statistics for test/t0.
InnoDB: DEBUG: update_statistics for test/t00.
InnoDB: DEBUG: update_statistics for test/t00.
InnoDB: DEBUG: update_statistics for test/t1.
InnoDB: DEBUG: update_statistics for test/t1.
InnoDB: DEBUG: update_statistics for test/t10.
InnoDB: DEBUG: update_statistics for test/t10.
InnoDB: DEBUG: update_statistics for test/t11.
InnoDB: DEBUG: update_statistics for test/t11.
InnoDB: DEBUG: update_statistics for test/t12.
InnoDB: DEBUG: update_statistics for test/t12.
InnoDB: DEBUG: update_statistics for test/t13.
InnoDB: DEBUG: update_statistics for test/t13.
InnoDB: DEBUG: update_statistics for test/t14.
InnoDB: DEBUG: update_statistics for test/t14.
InnoDB: DEBUG: update_statistics for test/t2.
InnoDB: DEBUG: update_statistics for test/t2.
InnoDB: DEBUG: update_statistics for test/t3.
InnoDB: DEBUG: update_statistics for test/t3.
InnoDB: DEBUG: update_statistics for test/t4.
InnoDB: DEBUG: update_statistics for test/t4.
InnoDB: DEBUG: update_statistics for test/t5.
InnoDB: DEBUG: update_statistics for test/t5.
InnoDB: DEBUG: update_statistics for test/t6.
InnoDB: DEBUG: update_statistics for test/t6.
InnoDB: DEBUG: update_statistics for test/t7.
InnoDB: DEBUG: update_statistics for test/t7.
InnoDB: DEBUG: update_statistics for test/t8.
InnoDB: DEBUG: update_statistics for test/t8.
InnoDB: DEBUG: update_statistics for test/t9.
InnoDB: DEBUG: update_statistics for test/t9.
InnoDB: DEBUG: update_statistics for test/#sql-4c71_2.
InnoDB: DEBUG: update_statistics for test/#sql-4c71_2.
InnoDB: DEBUG: update_statistics for test/t1.
InnoDB: DEBUG: update_statistics for test/t1.
InnoDB: DEBUG: update_statistics for test/t1.
InnoDB: DEBUG: update_statistics for test/#sql-4c71_2.
InnoDB: DEBUG: update_statistics for test/#sql-4c71_2.
InnoDB: DEBUG: update_statistics for test/t1.
InnoDB: DEBUG: update_statistics for test/t1.
InnoDB: DEBUG: update_statistics for test/#sql-4c71_2.
InnoDB: DEBUG: update_statistics for test/#sql-4c71_2.
InnoDB: DEBUG: update_statistics for test/t1.
InnoDB: DEBUG: update_statistics for test/t1.
InnoDB: DEBUG: update_statistics for test/t1.
InnoDB: DEBUG: update_statistics for test/t2.
InnoDB: DEBUG: update_statistics for test/t2.
InnoDB: DEBUG: update_statistics for test/t1.
110410 12:11:21 InnoDB: Assertion failure in thread 1100351808 in file /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/buf/buf0buf.c line 2422
InnoDB: Failing assertion: buf_page_in_file(bpage)
InnoDB: We intentionally generate a memory trap.
InnoDB: Submit a detailed bug report to http://bugs.mysql.com.
InnoDB: If you get repeated assertion failures or crashes, even
InnoDB: immediately after the mysqld startup, there may be
InnoDB: corruption in the InnoDB tablespace. Please refer to
InnoDB: http://dev.mysql.com/doc/refman/5.5/en/forcing-innodb-recovery.html
InnoDB: about forcing recovery.
110410 12:11:21 - mysqld got signal 6 ;
This could be because you hit a bug. It is also possible that this binary
or one of the libraries it was linked against is corrupt, improperly built,
or misconfigured. This error can also be caused by malfunctioning hardware.
We will try our best to scrape up some info that will hopefully help diagnose
the problem, but since we have already crashed, something is definitely wrong
and this may fail.

key_buffer_size=1048576
read_buffer_size=131072
max_used_connections=1
max_threads=151
thread_count=1
connection_count=1
It is possible that mysqld could use up to
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 60913 K
bytes of memory
Hope that's ok; if not, decrease some variables in the equation.

Thread pointer: 0xcb45e10
Attempting backtrace. You can use the following information to find out
where mysqld died. If you see no messages after this, something went
terribly wrong...
stack_bottom = 0x419600a0 thread_stack 0x40000
/home/alexey.kopytov/src/percona/5.5.11/Percona-Server-debug/sql/mysqld(my_print_stacktrace+0x39)[0x8452c9]
/home/alexey.kopytov/src/percona/5.5.11/Percona-Server-debug/sql/mysqld(handle_segfault+0x379)[0x4fec99]
/lib64/libpthread.so.0[0x3bbe00eb10]
/lib64/libc.so.6(gsignal+0x35)[0x3bbd830265]
/lib64/libc.so.6(abort+0x110)[0x3bbd831d10]
/home/alexey.kopytov/src/percona/5.5.11/Percona-Server-debug/sql/mysqld[0x91041e]
/home/alexey.kopytov/src/percona/5.5.11/Percona-Server-debug/sql/mysqld[0x92267f]
/home/alexey.kopytov/src/percona/5.5.11/Percona-Server-debug/sql/mysqld[0x92c35a]
/home/alexey.kopytov/src/percona/5.5.11/Percona-Server-debug/sql/mysqld[0x8f5f08]
/home/alexey.kopytov/src/percona/5.5.11/Percona-Server-debug/sql/mysqld[0x8f7362]
/home/alexey.kopytov/src/percona/5.5.11/Percona-Server-debug/sql/mysqld[0x9eb4b5]
/home/alexey.kopytov/src/percona/5.5.11/Percona-Server-debug/sql/mysqld[0x9ebdba]
/home/alexey.kopytov/src/percona/5.5.11/Percona-Server-debug/sql/mysqld[0x9ec2df]
/home/alexey.kopytov/src/percona/5.5.11/Percona-Server-debug/sql/mysqld[0x88959f]
/home/alexey.kopytov/src/percona/5.5.11/Percona-Server-debug/sql/mysqld[0x869e2b]
/home/alexey.kopytov/src/percona/5.5.11/Percona-Server-debug/sql/mysqld(_ZN7handler12ha_write_rowEPh+0x8f)[0x6d4f7f]
/home/alexey.kopytov/src/percona/5.5.11/Percona-Server-debug/sql/mysqld(_Z12write_recordP3THDP5TABLEP12st_copy_info+0x8b)[0x57962b]
/home/alexey.kopytov/src/percona/5.5.11/Percona-Server-debug/sql/mysqld(_ZN13select_insert9send_dataER4ListI4ItemE+0xf3)[0x579f63]
/home/alexey.kopytov/src/percona/5.5.11/Percona-Server-debug/sql/mysqld[0x5bf2c2]
/home/alexey.kopytov/src/percona/5.5.11/Percona-Server-debug/sql/mysqld[0x5ba487]
/home/alexey.kopytov/src/percona/5.5.11/Percona-Server-debug/sql/mysqld(_Z10sub_selectP4JOINP13st_join_tableb+0x7d)[0x5bf79d]
/home/alexey.kopytov/src/percona/5.5.11/Percona-Server-debug/sql/mysqld[0x5d3478]
/home/alexey.kopytov/src/percona/5.5.11/Percona-Server-debug/sql/mysqld(_ZN4JOIN4execEv+0xaac)[0x5dfcec]
/home/alexey.kopytov/src/percona/5.5.11/Percona-Server-debug/sql/mysqld(_Z12mysql_selectP3THDPPP4ItemP10TABLE_LISTjR4ListIS1_ES2_jP8st_orderSB_S2_SB_yP13select_resultP18st_select_lex_unitP13st_select_lex+0x1e7)[0x5e1ca7]
/home/alexey.kopytov/src/percona/5.5.11/Percona-Server-debug/sql/mysqld(_Z13handle_selectP3THDP3LEXP13select_resultm+0x237)[0x5e26d7]
/home/alexey.kopytov/src/percona/5.5.11/Percona-Server-debug/sql/mysqld(_Z21mysql_execute_commandP3THD+0x7245)[0x59a1c5]
/home/alexey.kopytov/src/percona/5.5.11/Percona-Server-debug/sql/mysqld(_Z11mysql_parseP3THDPcjP12Parser_state+0x3cb)[0x59a6eb]
/home/alexey.kopytov/src/percona/5.5.11/Percona-Server-debug/sql/mysqld(_Z16dispatch_command19enum_server_commandP3THDPcj+0x153c)[0x59bd4c]
/home/alexey.kopytov/src/percona/5.5.11/Percona-Server-debug/sql/mysqld(_Z10do_commandP3THD+0x1cc)[0x59c20c]
/home/alexey.kopytov/src/percona/5.5.11/Percona-Server-debug/sql/mysqld(_Z24do_handle_one_connectionP3THD+0x307)[0x651fb7]
/home/alexey.kopytov/src/percona/5.5.11/Percona-Server-debug/sql/mysqld(handle_one_connection+0x54)[0x6520b4]
/home/alexey.kopytov/src/percona/5.5.11/Percona-Server-debug/sql/mysqld(pfs_spawn_thread+0x5b)[0xa5b19b]
/lib64/libpthread.so.0[0x3bbe00673d]
/lib64/libc.so.6(clone+0x6d)[0x3bbd8d3f6d]

Trying to get some variables.
Some pointers may be invalid and cause the dump to abort.
Query (0xcbdda40): insert into t1 select 1, b from t2
Connection ID (thread ID): 2
Status: NOT_KILLED

The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains
information that should help you find out what is causing the crash.
Writing a core file
----------SERVER LOG END-------------

 - saving '/home/alexey.kopytov/src/percona/5.5.11/Percona-Server-debug/mysql-test/var/log/innodb.innodb-zip/' to '/home/alexey.kopytov/src/percona/5.5.11/Percona-Server-debug/mysql-test/var/log/innodb.innodb-zip/'
 - found 'core.19569' (0/5)

Trying 'dbx' to get a backtrace

Trying 'gdb' to get a backtrace
Core generated by '/home/alexey.kopytov/src/percona/5.5.11/Percona-Server-debug/sql/mysqld'
Output from gdb follows. The first stack trace is from the failing thread.
The following stack traces are from all threads (so the failing one is
duplicated).
--------------------------
[New Thread 19584]
[New Thread 19583]
[New Thread 19582]
[New Thread 19581]
[New Thread 19580]
[New Thread 19579]
[New Thread 19578]
[New Thread 19576]
[New Thread 19575]
[New Thread 19574]
[New Thread 19573]
[New Thread 19572]
[New Thread 19571]
[New Thread 19569]
Core was generated by `/home/alexey.kopytov/src/percona/5.5.11/Percona-Server-debug/sql/mysqld --defau'.
Program terminated with signal 6, Aborted.
#0 0x0000003bbe00bd02 in pthread_kill () from /lib64/libpthread.so.0
#0 0x0000003bbe00bd02 in pthread_kill () from /lib64/libpthread.so.0
#1 0x00000000004fecc7 in handle_segfault (sig=6) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/sql/mysqld.cc:2553
#2 <signal handler called>
#3 0x0000003bbd830265 in raise () from /lib64/libc.so.6
#4 0x0000003bbd831d10 in abort () from /lib64/libc.so.6
#5 0x000000000091041e in buf_pool_watch_is_sentinel (buf_pool=0xc9a2728, bpage=0x2aaaacbb71f0) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/buf/buf0buf.c:2422
#6 0x000000000092267f in buf_page_get_mutex (bpage=0x2aaaacbb71f0, dpage=0x2aaaae7e5800) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/include/buf0buf.ic:320
#7 buf_flush_relocate_on_flush_list (bpage=0x2aaaacbb71f0, dpage=0x2aaaae7e5800) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/buf/buf0flu.c:588
#8 0x000000000092c35a in buf_LRU_free_block (bpage=0x2aaaacbb71f0, zip=0, have_LRU_mutex=1) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/buf/buf0lru.c:1753
#9 0x00000000008f5f08 in btr_blob_free (block=0x2aaaacbb71f0, all=0, mtr=<value optimized out>) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/btr/btr0cur.c:4172
#10 0x00000000008f7362 in btr_store_big_rec_extern_fields_func (index=0xcbf1578, rec_block=<value optimized out>, rec=0x2aaaae7d0080 "", offsets=0xcb492c8, local_mtr=<value optimized out>,
    update_in_place=<value optimized out>, big_rec_vec=0xcdc3d48) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/btr/btr0cur.c:4500
#11 0x00000000009eb4b5 in row_ins_index_entry_low (mode=<value optimized out>, index=0xcbf1578, entry=0xcbe10f8, n_ext=0, thr=<value optimized out>)
    at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/row/row0ins.c:2131
#12 0x00000000009ebdba in row_ins_index_entry_step (node=0xcbf0990, thr=0xcbf0bd0) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/row/row0ins.c:2180
#13 row_ins (node=0xcbf0990, thr=0xcbf0bd0) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/row/row0ins.c:2397
#14 0x00000000009ec2df in row_ins_step (thr=0xcbf0bd0) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/row/row0ins.c:2507
#15 0x000000000088959f in row_insert_for_mysql (mysql_rec=0xcbfe770 "\376\001", prebuilt=0xcc11748) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/row/row0mysql.c:1218
#16 0x0000000000869e2b in ha_innobase::write_row (this=0xcbfe340, record=0xcbfe770 "\376\001") at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/handler/ha_innodb.cc:5450
#17 0x00000000006d4f7f in handler::ha_write_row (this=0xcbfe340, buf=0xcbfe770 "\376\001") at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/sql/handler.cc:4909
#18 0x000000000057962b in write_record (thd=0xcb45e10, table=0xcdc6bf0, info=0xcbde7b8) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/sql/sql_insert.cc:1737
#19 0x0000000000579f63 in select_insert::send_data (this=0xcbde780, values=...) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/sql/sql_insert.cc:3406
#20 0x00000000005bf2c2 in end_send (join=0xcdc1cf0, join_tab=<value optimized out>, end_of_records=false) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/sql/sql_select.cc:12669
#21 0x00000000005ba487 in evaluate_join_record (join=0xcdc1cf0, join_tab=0xcbded40, error=<value optimized out>) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/sql/sql_select.cc:11886
#22 0x00000000005bf79d in sub_select (join=0xcdc1cf0, join_tab=0xcbded40, end_of_records=<value optimized out>) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/sql/sql_select.cc:11739
#23 0x00000000005d3478 in do_select (join=0xcdc1cf0, fields=0xcb483f0, table=0x0, procedure=0x0) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/sql/sql_select.cc:11504
#24 0x00000000005dfcec in JOIN::exec (this=0xcdc1cf0) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/sql/sql_select.cc:2387
#25 0x00000000005e1ca7 in mysql_select (thd=0xcb45e10, rref_pointer_array=0xcb484b8, tables=0xcbde230, wild_num=0, fields=<value optimized out>, conds=0x0, og_num=0, order=0x0, group=0x0, having=0x0,
    proc_param=0x0, select_options=3489925888, result=0xcbde780, unit=0xcb47cc8, select_lex=0xcb482e8) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/sql/sql_select.cc:2596
#26 0x00000000005e26d7 in handle_select (thd=0xcb45e10, lex=0xcb47c18, result=0xcbde780, setup_tables_done_option=1073741824) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/sql/sql_select.cc:312
#27 0x000000000059a1c5 in mysql_execute_command (thd=0xcb45e10) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/sql/sql_parse.cc:2974
#28 0x000000000059a6eb in mysql_parse (thd=0xcb45e10, rawbuf=<value optimized out>, length=<value optimized out>, parser_state=0x4195fc70)
    at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/sql/sql_parse.cc:5676
#29 0x000000000059bd4c in dispatch_command (command=COM_QUERY, thd=0xcb45e10, packet=0xcbd5a11 "insert into t1 select 1, b from t2", packet_length=34)
    at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/sql/sql_parse.cc:1052
#30 0x000000000059c20c in do_command (thd=0xcb45e10) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/sql/sql_parse.cc:785
#31 0x0000000000651fb7 in do_handle_one_connection (thd_arg=0xcb45e10) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/sql/sql_connect.cc:1391
#32 0x00000000006520b4 in handle_one_connection (arg=<value optimized out>) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/sql/sql_connect.cc:1314
#33 0x0000000000a5b19b in pfs_spawn_thread (arg=<value optimized out>) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/perfschema/pfs.cc:1015
#34 0x0000003bbe00673d in start_thread () from /lib64/libpthread.so.0
#35 0x0000003bbd8d3f6d in clone () from /lib64/libc.so.6

Thread 15 (Thread 19569):
#0 0x0000003bbd8cb186 in poll () from /lib64/libc.so.6
#1 0x0000000000501179 in handle_connections_sockets () at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/sql/mysqld.cc:5312
#2 0x0000000000506c31 in mysqld_main (argc=47, argv=0xc30e718) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/sql/mysqld.cc:4762
#3 0x0000003bbd81d994 in __libc_start_main () from /lib64/libc.so.6
#4 0x00000000004fcee9 in _start ()

Thread 14 (Thread 19571):
#0 0x0000003bbe00aee9 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1 0x000000000084bd38 in safe_cond_wait (cond=0xc98da68, mp=0xc98d9f0, file=0xb94d70 "/home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/os/os0sync.c", line=207)
    at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/mysys/thr_mutex.c:240
#2 0x00000000009b5f45 in os_cond_wait (event=0xc98d9f0, reset_sig_count=1) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/os/os0sync.c:207
#3 os_event_wait_low (event=0xc98d9f0, reset_sig_count=1) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/os/os0sync.c:634
#4 0x00000000009b4d2a in os_aio_simulated_handle (global_segment=0, message1=0x4254f100, message2=0x4254f0f8, type=0x4254f0f0, space_id=0x4254f0e8)
    at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/os/os0file.c:4991
#5 0x000000000095743a in fil_aio_wait (segment=0) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/fil/fil0fil.c:5164
#6 0x00000000008b18f0 in io_handler_thread (arg=<value optimized out>) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/srv/srv0start.c:483
#7 0x0000003bbe00673d in start_thread () from /lib64/libpthread.so.0
#8 0x0000003bbd8d3f6d in clone () from /lib64/libc.so.6

Thread 13 (Thread 19572):
#0 0x0000003bbe00aee9 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1 0x000000000084bd38 in safe_cond_wait (cond=0xc98db28, mp=0xc98dab0, file=0xb94d70 "/home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/os/os0sync.c", line=207)
    at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/mysys/thr_mutex.c:240
#2 0x00000000009b5f45 in os_cond_wait (event=0xc98dab0, reset_sig_count=7) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/os/os0sync.c:207
#3 os_event_wait_low (event=0xc98dab0, reset_sig_count=7) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/os/os0sync.c:634
#4 0x00000000009b4d2a in os_aio_simulated_handle (global_segment=1, message1=0x42f50100, message2=0x42f500f8, type=0x42f500f0, space_id=0x42f500e8)
    at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/os/os0file.c:4991
#5 0x000000000095743a in fil_aio_wait (segment=1) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/fil/fil0fil.c:5164
#6 0x00000000008b18f0 in io_handler_thread (arg=<value optimized out>) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/srv/srv0start.c:483
#7 0x0000003bbe00673d in start_thread () from /lib64/libpthread.so.0
#8 0x0000003bbd8d3f6d in clone () from /lib64/libc.so.6

Thread 12 (Thread 19573):
#0 0x0000003bbe00aee9 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1 0x000000000084bd38 in safe_cond_wait (cond=0xc98dbe8, mp=0xc98db70, file=0xb94d70 "/home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/os/os0sync.c", line=207)
    at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/mysys/thr_mutex.c:240
#2 0x00000000009b5f45 in os_cond_wait (event=0xc98db70, reset_sig_count=1) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/os/os0sync.c:207
#3 os_event_wait_low (event=0xc98db70, reset_sig_count=1) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/os/os0sync.c:634
#4 0x00000000009b4d2a in os_aio_simulated_handle (global_segment=2, message1=0x43951100, message2=0x439510f8, type=0x439510f0, space_id=0x439510e8)
    at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/os/os0file.c:4991
#5 0x000000000095743a in fil_aio_wait (segment=2) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/fil/fil0fil.c:5164
#6 0x00000000008b18f0 in io_handler_thread (arg=<value optimized out>) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/srv/srv0start.c:483
#7 0x0000003bbe00673d in start_thread () from /lib64/libpthread.so.0
#8 0x0000003bbd8d3f6d in clone () from /lib64/libc.so.6

Thread 11 (Thread 19574):
#0 0x0000003bbe00aee9 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1 0x000000000084bd38 in safe_cond_wait (cond=0xc98dca8, mp=0xc98dc30, file=0xb94d70 "/home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/os/os0sync.c", line=207)
    at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/mysys/thr_mutex.c:240
#2 0x00000000009b5f45 in os_cond_wait (event=0xc98dc30, reset_sig_count=1) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/os/os0sync.c:207
#3 os_event_wait_low (event=0xc98dc30, reset_sig_count=1) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/os/os0sync.c:634
#4 0x00000000009b4d2a in os_aio_simulated_handle (global_segment=3, message1=0x44352100, message2=0x443520f8, type=0x443520f0, space_id=0x443520e8)
    at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/os/os0file.c:4991
#5 0x000000000095743a in fil_aio_wait (segment=3) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/fil/fil0fil.c:5164
#6 0x00000000008b18f0 in io_handler_thread (arg=<value optimized out>) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/srv/srv0start.c:483
#7 0x0000003bbe00673d in start_thread () from /lib64/libpthread.so.0
#8 0x0000003bbd8d3f6d in clone () from /lib64/libc.so.6

Thread 10 (Thread 19575):
#0 0x0000003bbe00aee9 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1 0x000000000084bd38 in safe_cond_wait (cond=0xc98dd68, mp=0xc98dcf0, file=0xb94d70 "/home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/os/os0sync.c", line=207)
    at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/mysys/thr_mutex.c:240
#2 0x00000000009b5f45 in os_cond_wait (event=0xc98dcf0, reset_sig_count=1) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/os/os0sync.c:207
#3 os_event_wait_low (event=0xc98dcf0, reset_sig_count=1) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/os/os0sync.c:634
#4 0x00000000009b4d2a in os_aio_simulated_handle (global_segment=4, message1=0x44d53100, message2=0x44d530f8, type=0x44d530f0, space_id=0x44d530e8)
    at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/os/os0file.c:4991
#5 0x000000000095743a in fil_aio_wait (segment=4) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/fil/fil0fil.c:5164
#6 0x00000000008b18f0 in io_handler_thread (arg=<value optimized out>) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/srv/srv0start.c:483
#7 0x0000003bbe00673d in start_thread () from /lib64/libpthread.so.0
#8 0x0000003bbd8d3f6d in clone () from /lib64/libc.so.6

Thread 9 (Thread 19576):
#0 0x0000003bbe00aee9 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1 0x000000000084bd38 in safe_cond_wait (cond=0xc98de28, mp=0xc98ddb0, file=0xb94d70 "/home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/os/os0sync.c", line=207)
    at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/mysys/thr_mutex.c:240
#2 0x00000000009b5f45 in os_cond_wait (event=0xc98ddb0, reset_sig_count=1) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/os/os0sync.c:207
#3 os_event_wait_low (event=0xc98ddb0, reset_sig_count=1) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/os/os0sync.c:634
#4 0x00000000009b4d2a in os_aio_simulated_handle (global_segment=5, message1=0x45754100, message2=0x457540f8, type=0x457540f0, space_id=0x457540e8)
    at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/os/os0file.c:4991
#5 0x000000000095743a in fil_aio_wait (segment=5) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/fil/fil0fil.c:5164
#6 0x00000000008b18f0 in io_handler_thread (arg=<value optimized out>) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/srv/srv0start.c:483
#7 0x0000003bbe00673d in start_thread () from /lib64/libpthread.so.0
#8 0x0000003bbd8d3f6d in clone () from /lib64/libc.so.6

Thread 8 (Thread 19578):
#0 0x0000003bbe00b150 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1 0x000000000084b8c2 in safe_cond_timedwait (cond=0xc74e8c8, mp=0xc74e850, abstime=0x461550a0, file=0xffffffffffffff92 <Address 0xffffffffffffff92 out of bounds>, line=171)
    at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/mysys/thr_mutex.c:278
#2 0x00000000009b61a7 in os_cond_wait_timed (event=0xc74e850, time_in_usec=<value optimized out>, reset_sig_count=<value optimized out>)
    at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/os/os0sync.c:171
#3 os_event_wait_time_low (event=0xc74e850, time_in_usec=<value optimized out>, reset_sig_count=<value optimized out>)
    at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/os/os0sync.c:743
#4 0x00000000008af0f1 in srv_lock_timeout_thread (arg=<value optimized out>) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/srv/srv0srv.c:2670
#5 0x0000003bbe00673d in start_thread () from /lib64/libpthread.so.0
#6 0x0000003bbd8d3f6d in clone () from /lib64/libc.so.6

Thread 7 (Thread 19579):
#0 0x0000003bbe00b150 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1 0x000000000084b8c2 in safe_cond_timedwait (cond=0xc74e808, mp=0xc74e790, abstime=0x46b56050, file=0xffffffffffffff92 <Address 0xffffffffffffff92 out of bounds>, line=171)
    at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/mysys/thr_mutex.c:278
#2 0x00000000009b61a7 in os_cond_wait_timed (event=0xc74e790, time_in_usec=<value optimized out>, reset_sig_count=<value optimized out>)
    at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/os/os0sync.c:171
#3 os_event_wait_time_low (event=0xc74e790, time_in_usec=<value optimized out>, reset_sig_count=<value optimized out>)
    at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/os/os0sync.c:743
#4 0x00000000008b1438 in srv_error_monitor_thread (arg=<value optimized out>) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/srv/srv0srv.c:2843
#5 0x0000003bbe00673d in start_thread () from /lib64/libpthread.so.0
#6 0x0000003bbd8d3f6d in clone () from /lib64/libc.so.6

Thread 6 (Thread 19580):
#0 0x0000003bbe00b150 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1 0x000000000084b8c2 in safe_cond_timedwait (cond=0xc74e988, mp=0xc74e910, abstime=0x47557090, file=0xffffffffffffff92 <Address 0xffffffffffffff92 out of bounds>, line=171)
    at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/mysys/thr_mutex.c:278
#2 0x00000000009b61a7 in os_cond_wait_timed (event=0xc74e910, time_in_usec=<value optimized out>, reset_sig_count=<value optimized out>)
    at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/os/os0sync.c:171
#3 os_event_wait_time_low (event=0xc74e910, time_in_usec=<value optimized out>, reset_sig_count=<value optimized out>)
    at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/os/os0sync.c:743
#4 0x00000000008b08ab in srv_monitor_thread (arg=<value optimized out>) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/srv/srv0srv.c:2520
#5 0x0000003bbe00673d in start_thread () from /lib64/libpthread.so.0
#6 0x0000003bbd8d3f6d in clone () from /lib64/libc.so.6

Thread 5 (Thread 19581):
#0 0x0000003bbd8cd212 in select () from /lib64/libc.so.6
#1 0x00000000009b6f5f in os_thread_sleep (tm=<value optimized out>) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/os/os0thread.c:274
#2 0x00000000008ab4ac in srv_LRU_dump_restore_thread (arg=<value optimized out>) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/srv/srv0srv.c:2887
#3 0x0000003bbe00673d in start_thread () from /lib64/libpthread.so.0
#4 0x0000003bbd8d3f6d in clone () from /lib64/libc.so.6

Thread 4 (Thread 19582):
#0 0x0000003bbd8cd212 in select () from /lib64/libc.so.6
#1 0x00000000009b6f5f in os_thread_sleep (tm=<value optimized out>) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/os/os0thread.c:274
#2 0x00000000008acfa2 in srv_master_thread (arg=<value optimized out>) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/srv/srv0srv.c:3195
#3 0x0000003bbe00673d in start_thread () from /lib64/libpthread.so.0
#4 0x0000003bbd8d3f6d in clone () from /lib64/libc.so.6

Thread 3 (Thread 19583):
#0 0x0000003bbd8cd212 in select () from /lib64/libc.so.6
#1 0x00000000009b6f5f in os_thread_sleep (tm=<value optimized out>) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/os/os0thread.c:274
#2 0x00000000008b10b3 in srv_purge_thread (arg=<value optimized out>) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/srv/srv0srv.c:3876
#3 0x0000003bbe00673d in start_thread () from /lib64/libpthread.so.0
#4 0x0000003bbd8d3f6d in clone () from /lib64/libc.so.6

Thread 2 (Thread 19584):
#0 0x0000003bbe00e838 in do_sigwait () from /lib64/libpthread.so.0
#1 0x0000003bbe00e8dd in sigwait () from /lib64/libpthread.so.0
#2 0x000000000050246c in signal_hand (arg=<value optimized out>) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/sql/mysqld.cc:2746
#3 0x0000000000a5b19b in pfs_spawn_thread (arg=<value optimized out>) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/perfschema/pfs.cc:1015
#4 0x0000003bbe00673d in start_thread () from /lib64/libpthread.so.0
#5 0x0000003bbd8d3f6d in clone () from /lib64/libc.so.6

Thread 1 (Thread 19592):
#0 0x0000003bbe00bd02 in pthread_kill () from /lib64/libpthread.so.0
#1 0x00000000004fecc7 in handle_segfault (sig=6) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/sql/mysqld.cc:2553
#2 <signal handler called>
#3 0x0000003bbd830265 in raise () from /lib64/libc.so.6
#4 0x0000003bbd831d10 in abort () from /lib64/libc.so.6
#5 0x000000000091041e in buf_pool_watch_is_sentinel (buf_pool=0xc9a2728, bpage=0x2aaaacbb71f0) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/buf/buf0buf.c:2422
#6 0x000000000092267f in buf_page_get_mutex (bpage=0x2aaaacbb71f0, dpage=0x2aaaae7e5800) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/include/buf0buf.ic:320
#7 buf_flush_relocate_on_flush_list (bpage=0x2aaaacbb71f0, dpage=0x2aaaae7e5800) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/buf/buf0flu.c:588
#8 0x000000000092c35a in buf_LRU_free_block (bpage=0x2aaaacbb71f0, zip=0, have_LRU_mutex=1) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/buf/buf0lru.c:1753
#9 0x00000000008f5f08 in btr_blob_free (block=0x2aaaacbb71f0, all=0, mtr=<value optimized out>) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/btr/btr0cur.c:4172
#10 0x00000000008f7362 in btr_store_big_rec_extern_fields_func (index=0xcbf1578, rec_block=<value optimized out>, rec=0x2aaaae7d0080 "", offsets=0xcb492c8, local_mtr=<value optimized out>,
    update_in_place=<value optimized out>, big_rec_vec=0xcdc3d48) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/btr/btr0cur.c:4500
#11 0x00000000009eb4b5 in row_ins_index_entry_low (mode=<value optimized out>, index=0xcbf1578, entry=0xcbe10f8, n_ext=0, thr=<value optimized out>)
    at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/row/row0ins.c:2131
#12 0x00000000009ebdba in row_ins_index_entry_step (node=0xcbf0990, thr=0xcbf0bd0) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/row/row0ins.c:2180
#13 row_ins (node=0xcbf0990, thr=0xcbf0bd0) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/row/row0ins.c:2397
#14 0x00000000009ec2df in row_ins_step (thr=0xcbf0bd0) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/row/row0ins.c:2507
#15 0x000000000088959f in row_insert_for_mysql (mysql_rec=0xcbfe770 "\376\001", prebuilt=0xcc11748) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/row/row0mysql.c:1218
#16 0x0000000000869e2b in ha_innobase::write_row (this=0xcbfe340, record=0xcbfe770 "\376\001") at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/innobase/handler/ha_innodb.cc:5450
#17 0x00000000006d4f7f in handler::ha_write_row (this=0xcbfe340, buf=0xcbfe770 "\376\001") at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/sql/handler.cc:4909
#18 0x000000000057962b in write_record (thd=0xcb45e10, table=0xcdc6bf0, info=0xcbde7b8) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/sql/sql_insert.cc:1737
#19 0x0000000000579f63 in select_insert::send_data (this=0xcbde780, values=...) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/sql/sql_insert.cc:3406
#20 0x00000000005bf2c2 in end_send (join=0xcdc1cf0, join_tab=<value optimized out>, end_of_records=false) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/sql/sql_select.cc:12669
#21 0x00000000005ba487 in evaluate_join_record (join=0xcdc1cf0, join_tab=0xcbded40, error=<value optimized out>) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/sql/sql_select.cc:11886
#22 0x00000000005bf79d in sub_select (join=0xcdc1cf0, join_tab=0xcbded40, end_of_records=<value optimized out>) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/sql/sql_select.cc:11739
#23 0x00000000005d3478 in do_select (join=0xcdc1cf0, fields=0xcb483f0, table=0x0, procedure=0x0) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/sql/sql_select.cc:11504
#24 0x00000000005dfcec in JOIN::exec (this=0xcdc1cf0) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/sql/sql_select.cc:2387
#25 0x00000000005e1ca7 in mysql_select (thd=0xcb45e10, rref_pointer_array=0xcb484b8, tables=0xcbde230, wild_num=0, fields=<value optimized out>, conds=0x0, og_num=0, order=0x0, group=0x0, having=0x0,
    proc_param=0x0, select_options=3489925888, result=0xcbde780, unit=0xcb47cc8, select_lex=0xcb482e8) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/sql/sql_select.cc:2596
#26 0x00000000005e26d7 in handle_select (thd=0xcb45e10, lex=0xcb47c18, result=0xcbde780, setup_tables_done_option=1073741824) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/sql/sql_select.cc:312
#27 0x000000000059a1c5 in mysql_execute_command (thd=0xcb45e10) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/sql/sql_parse.cc:2974
#28 0x000000000059a6eb in mysql_parse (thd=0xcb45e10, rawbuf=<value optimized out>, length=<value optimized out>, parser_state=0x4195fc70)
    at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/sql/sql_parse.cc:5676
#29 0x000000000059bd4c in dispatch_command (command=COM_QUERY, thd=0xcb45e10, packet=0xcbd5a11 "insert into t1 select 1, b from t2", packet_length=34)
    at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/sql/sql_parse.cc:1052
#30 0x000000000059c20c in do_command (thd=0xcb45e10) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/sql/sql_parse.cc:785
#31 0x0000000000651fb7 in do_handle_one_connection (thd_arg=0xcb45e10) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/sql/sql_connect.cc:1391
#32 0x00000000006520b4 in handle_one_connection (arg=<value optimized out>) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/sql/sql_connect.cc:1314
#33 0x0000000000a5b19b in pfs_spawn_thread (arg=<value optimized out>) at /home/alexey.kopytov/src/percona/5.5.11/Percona-Server/storage/perfschema/pfs.cc:1015
#34 0x0000003bbe00673d in start_thread () from /lib64/libpthread.so.0
#35 0x0000003bbd8d3f6d in clone () from /lib64/libc.so.6