high cpu percona-xtrabackup failed

/usr/bin/innobackupex version 2.4.7 based on MySQL server 5.7.13 Linux (x86_64) (revision id: 6f7a799)
incremental backup from 26800860 is enabled.
xtrabackup: uses posix_fadvise().
xtrabackup: cd to /data/mysql/3306/data
xtrabackup: open files limit requested 0, set to 65536
xtrabackup: using the following InnoDB configuration:
xtrabackup: innodb_data_home_dir = .
xtrabackup: innodb_data_file_path = ibdata1:12M:autoextend
xtrabackup: innodb_log_group_home_dir = ./
xtrabackup: innodb_log_files_in_group = 2
xtrabackup: innodb_log_file_size = 1073741824
xtrabackup: using O_DIRECT
InnoDB: Number of pools: 1
170908 11:28:05 >> log scanned up to (26800860)
xtrabackup: Generating a list of tablespaces
InnoDB: Allocated tablespace ID 4 for mysql/slave_master_info, old maximum was 0
03:28:05 UTC - xtrabackup got signal 11 ;
This could be because you hit a bug or data is corrupted.
This error can also be caused by malfunctioning hardware.
Attempting to collect some information that could help diagnose the problem.
As this is a crash and something is definitely wrong, the information
collection process might fail.

Thread pointer: 0x0
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 = 0 thread_stack 0x10000
/usr/bin/innobackupex(my_print_stacktrace+0x35)[0xd4f455]
/usr/bin/innobackupex(handle_fatal_signal+0x273)[0xb5d863]
/lib64/libpthread.so.0(+0xf7e0)[0x7f41bf07e7e0]
/lib64/libc.so.6(+0x8435b)[0x7f41bce9035b]
/usr/bin/innobackupex[0x751606]
/usr/bin/innobackupex[0x73abf1]
/usr/bin/innobackupex[0x73b128]
/lib64/libpthread.so.0(+0x7aa1)[0x7f41bf076aa1]
/lib64/libc.so.6(clone+0x6d)[0x7f41bcef4bbd]