Backtrace:
Thread 11 (Thread 0x7fb5e4e29700 (LWP 29110)):
#0  0x0000003b90e7939c in _int_malloc () from /lib64/libc.so.6
#1  0x0000003b90e7a911 in malloc () from /lib64/libc.so.6
#2  0x00000000004a422c in mem_heap_create_block (heap=0x0, n=<value optimized out>, type=0, file_name=0x576af8 "/mnt/xb-2.1/Percona-Server-5.5/storage/innobase/dict/dict0mem.c", line=73) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/mem/mem0mem.c:333
#3  0x00000000004667c0 in mem_heap_create_func (name=0x57f8e1 "LOG_DUMMY", space=0, n_cols=1, flags=0) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/include/mem0mem.ic:443
#4  dict_mem_table_create (name=0x57f8e1 "LOG_DUMMY", space=0, n_cols=1, flags=0) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/dict/dict0mem.c:73
#5  0x00000000004a5b3e in mlog_parse_index (ptr=0x7fb5d76e3340 "/逡", end_ptr=<value optimized out>, comp=<value optimized out>, index=0x7fb5e4e287d8) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/mtr/mtr0log.c:565
#6  0x000000000049d87e in recv_parse_or_apply_log_rec_body (type=9 '\t', ptr=<value optimized out>, end_ptr=0x7fb5d76e3397 "", block=0x7fb5d69904c8, mtr=<value optimized out>) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/log/log0recv.c:1099
#7  0x00000000004a21eb in recv_recover_page_func (just_read_in=<value optimized out>, block=0x7fb5d69904c8) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/log/log0recv.c:1674
#8  0x0000000000442191 in buf_page_io_complete (bpage=0x7fb5d69904c8) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/buf/buf0buf.c:4074
#9  0x000000000047439a in fil_aio_wait (segment=5) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/fil/fil0fil.c:5744
#10 0x00000000004f3628 in io_handler_thread (arg=<value optimized out>) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/srv/srv0start.c:486
#11 0x0000003b91607851 in start_thread () from /lib64/libpthread.so.0
#12 0x0000003b90ee890d in clone () from /lib64/libc.so.6

Thread 10 (Thread 0x7fb5e622d720 (LWP 29093)):
#0  0x0000003b9160ec0d in fsync () from /lib64/libpthread.so.0
#1  0x00000000004a9abb in os_file_fsync (file=10, metadata=<value optimized out>) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/os/os0file.c:2081
#2  0x00000000004aa4c9 in os_file_flush_func (file=<value optimized out>, metadata=<value optimized out>) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/os/os0file.c:2184
#3  0x000000000046b285 in pfs_os_file_flush_func (space_id=<value optimized out>, metadata=1) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/include/os0file.ic:385
#4  fil_flush (space_id=<value optimized out>, metadata=1) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/fil/fil0fil.c:5832
#5  0x0000000000473752 in fil_extend_space_to_desired_size (actual_size=0x7fffcdfcb668, space_id=378, size_after_extend=10) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/fil/fil0fil.c:5032
#6  0x0000000000474b4b in _fil_io (type=10, sync=<value optimized out>, space_id=378, zip_size=0, block_offset=9, byte_offset=0, len=16384, buf=0x7fb5dc1f8000, message=0x7fb5d69a2000, trx=0x0)
    at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/fil/fil0fil.c:5442
#7  0x000000000044ef34 in buf_read_page_low (err=0x7fffcdfcb768, sync=0, mode=<value optimized out>, space=378, zip_size=0, unzip=<value optimized out>, tablespace_version=24, offset=9, trx=0x0)
    at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/buf/buf0rea.c:193
#8  0x000000000044f30b in buf_read_recv_pages (sync=<value optimized out>, space=378, zip_size=0, page_nos=0x7fffcdfcbcd0, n_stored=65) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/buf/buf0rea.c:918
#9  0x00000000004a0276 in recv_read_in_area (allow_ibuf=0) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/log/log0recv.c:1794
#10 recv_apply_hashed_log_recs (allow_ibuf=0) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/log/log0recv.c:1880
#11 0x00000000004a1a38 in recv_scan_log_recs (available_memory=88064000, store_to_hash=1, buf=<value optimized out>, len=<value optimized out>, start_lsn=<value optimized out>, contiguous_lsn=<value optimized out>, group_scanned_lsn=0x7fffcdfccd88)
    at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/log/log0recv.c:2854
#12 0x00000000004a3478 in recv_group_scan_log_recs (min_flushed_lsn=934779295, max_flushed_lsn=934779295) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/log/log0recv.c:2897
#13 recv_recovery_from_checkpoint_start_func (min_flushed_lsn=934779295, max_flushed_lsn=934779295) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/log/log0recv.c:3186
#14 0x00000000004f5fb7 in innobase_start_or_create_for_mysql () at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/srv/srv0start.c:1855
#15 0x000000000040e56a in innodb_init () at xtrabackup.cc:1387
#16 xtrabackup_prepare_func () at xtrabackup.cc:5236
#17 0x00000000004106e2 in main (argc=0, argv=0x2325938) at xtrabackup.cc:5786

Thread 9 (Thread 0x7fb5debfd700 (LWP 29112)):
#0  0x0000003b9160b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00000000004ae899 in os_cond_wait (event=0x29ea870, reset_sig_count=10) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/os/os0sync.c:207
#2  os_event_wait_low (event=0x29ea870, reset_sig_count=10) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/os/os0sync.c:609
#3  0x00000000004abb79 in os_aio_simulated_handle (global_segment=7, message1=0x7fb5debfce68, message2=0x7fb5debfce60, type=0x7fb5debfce58, space_id=0x7fb5debfce50) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/os/os0file.c:5097
#4  0x0000000000474354 in fil_aio_wait (segment=7) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/fil/fil0fil.c:5701
#5  0x00000000004f3628 in io_handler_thread (arg=<value optimized out>) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/srv/srv0start.c:486
#6  0x0000003b91607851 in start_thread () from /lib64/libpthread.so.0
#7  0x0000003b90ee890d in clone () from /lib64/libc.so.6

Thread 8 (Thread 0x7fb5e582a700 (LWP 29109)):
#0  0x0000003b9160b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00000000004ae899 in os_cond_wait (event=0x29ea6f0, reset_sig_count=4) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/os/os0sync.c:207
#2  os_event_wait_low (event=0x29ea6f0, reset_sig_count=4) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/os/os0sync.c:609
#3  0x00000000004abb79 in os_aio_simulated_handle (global_segment=4, message1=0x7fb5e5829e68, message2=0x7fb5e5829e60, type=0x7fb5e5829e58, space_id=0x7fb5e5829e50) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/os/os0file.c:5097
#4  0x0000000000474354 in fil_aio_wait (segment=4) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/fil/fil0fil.c:5701
#5  0x00000000004f3628 in io_handler_thread (arg=<value optimized out>) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/srv/srv0start.c:486
#6  0x0000003b91607851 in start_thread () from /lib64/libpthread.so.0
#7  0x0000003b90ee890d in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7fb5de1fc700 (LWP 29106)):
#0  0x0000003b9160b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00000000004ae899 in os_cond_wait (event=0x29ea570, reset_sig_count=1) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/os/os0sync.c:207
#2  os_event_wait_low (event=0x29ea570, reset_sig_count=1) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/os/os0sync.c:609
#3  0x00000000004abb79 in os_aio_simulated_handle (global_segment=1, message1=0x7fb5de1fbe68, message2=0x7fb5de1fbe60, type=0x7fb5de1fbe58, space_id=0x7fb5de1fbe50) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/os/os0file.c:5097
#4  0x0000000000474354 in fil_aio_wait (segment=1) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/fil/fil0fil.c:5701
#5  0x00000000004f3628 in io_handler_thread (arg=<value optimized out>) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/srv/srv0start.c:486
#6  0x0000003b91607851 in start_thread () from /lib64/libpthread.so.0
#7  0x0000003b90ee890d in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7fb5dffff700 (LWP 29105)):
#0  0x0000003b9160b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00000000004ae899 in os_cond_wait (event=0x29ea4f0, reset_sig_count=1) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/os/os0sync.c:207
#2  os_event_wait_low (event=0x29ea4f0, reset_sig_count=1) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/os/os0sync.c:609
#3  0x00000000004abb79 in os_aio_simulated_handle (global_segment=0, message1=0x7fb5dfffee68, message2=0x7fb5dfffee60, type=0x7fb5dfffee58, space_id=0x7fb5dfffee50) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/os/os0file.c:5097
#4  0x0000000000474354 in fil_aio_wait (segment=0) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/fil/fil0fil.c:5701
#5  0x00000000004f3628 in io_handler_thread (arg=<value optimized out>) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/srv/srv0start.c:486
#6  0x0000003b91607851 in start_thread () from /lib64/libpthread.so.0
#7  0x0000003b90ee890d in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7fb5d5d2d700 (LWP 29114)):
#0  0x0000003b9160b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00000000004ae899 in os_cond_wait (event=0x29ea970, reset_sig_count=4) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/os/os0sync.c:207
#2  os_event_wait_low (event=0x29ea970, reset_sig_count=4) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/os/os0sync.c:609
#3  0x00000000004abb79 in os_aio_simulated_handle (global_segment=9, message1=0x7fb5d5d2ce68, message2=0x7fb5d5d2ce60, type=0x7fb5d5d2ce58, space_id=0x7fb5d5d2ce50) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/os/os0file.c:5097
#4  0x0000000000474354 in fil_aio_wait (segment=9) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/fil/fil0fil.c:5701
#5  0x00000000004f3628 in io_handler_thread (arg=<value optimized out>) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/srv/srv0start.c:486
#6  0x0000003b91607851 in start_thread () from /lib64/libpthread.so.0
#7  0x0000003b90ee890d in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7fb5d672e700 (LWP 29113)):
#0  0x0000003b9160b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00000000004ae899 in os_cond_wait (event=0x29ea8f0, reset_sig_count=3) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/os/os0sync.c:207
#2  os_event_wait_low (event=0x29ea8f0, reset_sig_count=3) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/os/os0sync.c:609
#3  0x00000000004abb79 in os_aio_simulated_handle (global_segment=8, message1=0x7fb5d672de68, message2=0x7fb5d672de60, type=0x7fb5d672de58, space_id=0x7fb5d672de50) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/os/os0file.c:5097
#4  0x0000000000474354 in fil_aio_wait (segment=8) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/fil/fil0fil.c:5701
#5  0x00000000004f3628 in io_handler_thread (arg=<value optimized out>) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/srv/srv0start.c:486
#6  0x0000003b91607851 in start_thread () from /lib64/libpthread.so.0
#7  0x0000003b90ee890d in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7fb5df5fe700 (LWP 29111)):
#0  0x0000003b9160b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00000000004ae899 in os_cond_wait (event=0x29ea7f0, reset_sig_count=12) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/os/os0sync.c:207
#2  os_event_wait_low (event=0x29ea7f0, reset_sig_count=12) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/os/os0sync.c:609
#3  0x00000000004abb79 in os_aio_simulated_handle (global_segment=6, message1=0x7fb5df5fde68, message2=0x7fb5df5fde60, type=0x7fb5df5fde58, space_id=0x7fb5df5fde50) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/os/os0file.c:5097
#4  0x0000000000474354 in fil_aio_wait (segment=6) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/fil/fil0fil.c:5701
#5  0x00000000004f3628 in io_handler_thread (arg=<value optimized out>) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/srv/srv0start.c:486
#6  0x0000003b91607851 in start_thread () from /lib64/libpthread.so.0
#7  0x0000003b90ee890d in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7fb5e622b700 (LWP 29108)):
#0  0x0000003b9160b43c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00000000004ae899 in os_cond_wait (event=0x29ea670, reset_sig_count=6) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/os/os0sync.c:207
#2  os_event_wait_low (event=0x29ea670, reset_sig_count=6) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/os/os0sync.c:609
#3  0x00000000004abb79 in os_aio_simulated_handle (global_segment=3, message1=0x7fb5e622ae68, message2=0x7fb5e622ae60, type=0x7fb5e622ae58, space_id=0x7fb5e622ae50) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/os/os0file.c:5097
#4  0x0000000000474354 in fil_aio_wait (segment=3) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/fil/fil0fil.c:5701
#5  0x00000000004f3628 in io_handler_thread (arg=<value optimized out>) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/srv/srv0start.c:486
#6  0x0000003b91607851 in start_thread () from /lib64/libpthread.so.0
#7  0x0000003b90ee890d in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7fb5dd7fb700 (LWP 29107)):
#0  0x0000003b90e328a5 in raise () from /lib64/libc.so.6
#1  0x0000003b90e34085 in abort () from /lib64/libc.so.6
#2  0x000000000049dc43 in recv_parse_or_apply_log_rec_body (type=38 '&', ptr=<value optimized out>, end_ptr=0x7fb5da46bc8e "", block=0x7fb5d69a18e0, mtr=<value optimized out>) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/log/log0recv.c:1103
#3  0x00000000004a21eb in recv_recover_page_func (just_read_in=<value optimized out>, block=0x7fb5d69a18e0) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/log/log0recv.c:1674
#4  0x0000000000442191 in buf_page_io_complete (bpage=0x7fb5d69a18e0) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/buf/buf0buf.c:4074
#5  0x000000000047439a in fil_aio_wait (segment=2) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/fil/fil0fil.c:5744
#6  0x00000000004f3628 in io_handler_thread (arg=<value optimized out>) at /mnt/xb-2.1/Percona-Server-5.5/storage/innobase/srv/srv0start.c:486
#7  0x0000003b91607851 in start_thread () from /lib64/libpthread.so.0
#8  0x0000003b90ee890d in clone () from /lib64/libc.so.6