[New LWP 30861]
[New LWP 30862]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007f5e0e1a2c60 in __GI___nanosleep (requested_time=requested_time@entry=0x7ffd7891b3e0, remaining=remaining@entry=0x0) at ../sysdeps/unix/sysv/linux/nanosleep.c:28

Thread 3 (Thread 0x7f5e09428700 (LWP 30862)):
#0  0x00007f5e0e1a2f9f in __libc_pread64 (fd=66, buf=0x7f5dfc004000, count=10485760, offset=62914560) at ../sysdeps/unix/sysv/linux/pread64.c:29
#1  0x00005621502e6665 in pread64 (__offset=62914560, __nbytes=10485760, __buf=0x7f5dfc004000, __fd=66) at /usr/include/x86_64-linux-gnu/bits/unistd.h:99
#2  SyncFileIO::execute (request=..., this=<synthetic pointer>) at ./storage/innobase/os/os0file.cc:1606
#3  os_file_io (in_type=..., file=file@entry=66, buf=buf@entry=0x7f5dfc004000, n=n@entry=10485760, offset=offset@entry=62914560, err=err@entry=0x7f5e0942736c) at ./storage/innobase/os/os0file.cc:4932
#4  0x00005621502e712e in os_file_pread (err=0x7f5e0942736c, offset=62914560, n=10485760, buf=0x7f5dfc004000, file=66, type=...) at ./storage/innobase/os/os0file.cc:5102
#5  os_file_read_page (type=..., file=file@entry=66, buf=buf@entry=0x7f5dfc004000, offset=offset@entry=62914560, n=n@entry=10485760, o=o@entry=0x0, exit_on_err=true) at ./storage/innobase/os/os0file.cc:5136
#6  0x00005621502e7322 in os_file_read_func (type=..., file=file@entry=66, buf=buf@entry=0x7f5dfc004000, offset=offset@entry=62914560, n=n@entry=10485760) at ./storage/innobase/os/os0file.cc:5498
#7  0x000056214fd8e94f in pfs_os_file_read_func (src_file=0x562150614228 "/home/buildbot/buildbot/build/mariadb-10.3.22/extra/mariabackup/fil_cur.cc", src_line=443, n=10485760, offset=62914560, buf=0x7f5dfc004000, type=..., file=...) at ./storage/innobase/include/os0file.ic:294
#8  xb_fil_cur_read (cursor=0x7f5e094278b0) at ./extra/mariabackup/fil_cur.cc:442
#9  0x000056214fd8638a in xtrabackup_copy_datafile (node=0x562153345640, thread_n=1, dest_name=<optimized out>, max_size=18446744073709551615) at ./extra/mariabackup/xtrabackup.cc:2582
#10 0x000056214fd866e2 in data_copy_thread_func (arg=0x56215334c8a0) at ./extra/mariabackup/xtrabackup.cc:2913
#11 0x00007f5e0e1986db in start_thread (arg=0x7f5e09428700) at pthread_create.c:463
#12 0x00007f5e0c0d588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f5e09c29700 (LWP 30861)):
#0  0x00007f5e0e19ef85 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f5e09c28da0, expected=0, futex_word=0x56215332a960) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1  __pthread_cond_wait_common (abstime=0x7f5e09c28da0, mutex=0x56215332a910, cond=0x56215332a938) at pthread_cond_wait.c:539
#2  __pthread_cond_timedwait (cond=cond@entry=0x56215332a938, mutex=mutex@entry=0x56215332a910, abstime=abstime@entry=0x7f5e09c28da0) at pthread_cond_wait.c:667
#3  0x00005621502ebcc2 in os_event::timed_wait (this=this@entry=0x56215332a900, abstime=abstime@entry=0x7f5e09c28da0) at ./storage/innobase/os/os0event.cc:275
#4  0x00005621502ec311 in os_event::wait_time_low (reset_sig_count=1, time_in_usec=<optimized out>, this=0x56215332a900) at ./storage/innobase/os/os0event.cc:385
#5  os_event_wait_time_low (event=0x56215332a900, time_in_usec=<optimized out>, reset_sig_count=<optimized out>) at ./storage/innobase/os/os0event.cc:485
#6  0x000056214fd7dcc9 in log_copying_thread () at ./extra/mariabackup/xtrabackup.cc:2807
#7  0x00007f5e0e1986db in start_thread (arg=0x7f5e09c29700) at pthread_create.c:463
#8  0x00007f5e0c0d588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f5e0e5c56c0 (LWP 30860)):
#0  0x00007f5e0e1a2c60 in __GI___nanosleep (requested_time=requested_time@entry=0x7ffd7891b3e0, remaining=remaining@entry=0x0) at ../sysdeps/unix/sysv/linux/nanosleep.c:28
#1  0x00005621502ec690 in os_thread_sleep (tm=<optimized out>) at ./storage/innobase/os/os0thread.cc:231
#2  0x000056214fd81849 in xtrabackup_backup_func () at ./extra/mariabackup/xtrabackup.cc:4284
#3  main_low (argv=<optimized out>) at ./extra/mariabackup/xtrabackup.cc:6319
#4  0x000056214fd659f5 in main (argc=6, argv=0x7ffd7891c998) at ./extra/mariabackup/xtrabackup.cc:6116