Comment 1 for bug 1737023

2017-12-08 05:58:02 12735 [Note] /sda/PS021217-percona-server-5.6.38-82.3-linux-x86_64-debug/bin/mysqld: ready for connections.
Version: '5.6.38-82.3-debug-log' socket: '/dev/shm/1512639429/socket.sock' port: 35021 MySQL Community Server (GPL)
mysqld: /git/PS-5.6-trunk_dbg/sql/log_event.cc:7852: User_var_log_event::User_var_log_event(const char*, uint, const Format_description_log_event*): Assertion `(bytes_read == (data_written - ((old_pre_checksum_fd || (description_event->checksum_alg == BINLOG_CHECKSUM_ALG_OFF)) ? 0 : 4))) || ((bytes_read == (data_written -1 - (old_pre_checksum_fd || (description_event->checksum_alg == BINLOG_CHECKSUM_ALG_OFF)) ? 0 : 4)))' failed.
18:58:03 UTC - mysqld got signal 6 ;

Core was generated by `/sda/PS021217-percona-server-5.6.38-82.3-linux-x86_64-debug/bin/mysqld --no-def'.
Program terminated with signal 6, Aborted.
#0 0x00007ff36946c9b1 in __pthread_kill (threadid=<optimized out>, signo=6) at ../nptl/sysdeps/unix/sysv/linux/pthread_kill.c:61
61 val = INTERNAL_SYSCALL (tgkill, err, 3, THREAD_GETMEM (THREAD_SELF, pid),
(gdb) bt
#0 0x00007ff36946c9b1 in __pthread_kill (threadid=<optimized out>, signo=6) at ../nptl/sysdeps/unix/sysv/linux/pthread_kill.c:61
#1 0x0000000000aca231 in my_write_core (sig=6) at /git/PS-5.6-trunk_dbg/mysys/stacktrace.c:424
#2 0x000000000073a92d in handle_fatal_signal (sig=6) at /git/PS-5.6-trunk_dbg/sql/signal_handler.cc:236
#3 <signal handler called>
#4 0x00007ff3677841f7 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
#5 0x00007ff3677858e8 in __GI_abort () at abort.c:90
#6 0x00007ff36777d266 in __assert_fail_base (fmt=0x7ff3678cfe68 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n",
    assertion=assertion@entry=0xf92ec8 "(bytes_read == (data_written - ((old_pre_checksum_fd || (description_event->checksum_alg == BINLOG_CHECKSUM_ALG_OFF)) ? 0 : 4))) || ((bytes_read == (data_written -1 - (old_pre_checksum_fd || (descript"...,
    file=file@entry=0xf8f940 "/git/PS-5.6-trunk_dbg/sql/log_event.cc", line=line@entry=7852,
    function=function@entry=0xf95fc0 <User_var_log_event::User_var_log_event(char const*, unsigned int, Format_description_log_event const*)::__PRETTY_FUNCTION__> "User_var_log_event::User_var_log_event(const char*, uint, const Format_description_log_event*)")
    at assert.c:92
#7 0x00007ff36777d312 in __GI___assert_fail (
    assertion=0xf92ec8 "(bytes_read == (data_written - ((old_pre_checksum_fd || (description_event->checksum_alg == BINLOG_CHECKSUM_ALG_OFF)) ? 0 : 4))) || ((bytes_read == (data_written -1 - (old_pre_checksum_fd || (descript"...,
    file=0xf8f940 "/git/PS-5.6-trunk_dbg/sql/log_event.cc", line=7852,
    function=0xf95fc0 <User_var_log_event::User_var_log_event(char const*, unsigned int, Format_description_log_event const*)::__PRETTY_FUNCTION__> "User_var_log_event::User_var_log_event(const char*, uint, const Format_description_log_event*)") at assert.c:101
#8 0x0000000000a304aa in User_var_log_event::User_var_log_event (this=0x7ff3218ef500, buf=0x7ff32181a268 "", event_len=43,
    description_event=0x7ff32188d600) at /git/PS-5.6-trunk_dbg/sql/log_event.cc:7842
#9 0x0000000000a22447 in Log_event::read_log_event (buf=0x7ff32181a250 ";\217)Z\016\001", event_len=43, error=0x7ff369a5e898,
    description_event=0x7ff32188d600, crc_check=0 '\000') at /git/PS-5.6-trunk_dbg/sql/log_event.cc:1627
#10 0x0000000000a21c0b in Log_event::read_log_event (file=0x7ff369a5e950, log_lock=0x0, description_event=0x7ff32188d600,
    crc_check=0 '\000') at /git/PS-5.6-trunk_dbg/sql/log_event.cc:1400
#11 0x0000000000a4fe7d in show_binlog_events (thd=0x7ff33eb85000, binary_log=0x17dd000 <mysql_bin_log>)
    at /git/PS-5.6-trunk_dbg/sql/binlog.cc:2498
#12 0x0000000000a5014d in mysql_show_binlog_events (thd=0x7ff33eb85000) at /git/PS-5.6-trunk_dbg/sql/binlog.cc:2584
#13 0x00000000007f030c in mysql_execute_command (thd=0x7ff33eb85000) at /git/PS-5.6-trunk_dbg/sql/sql_parse.cc:3251
#14 0x00000000007fa666 in mysql_parse (thd=0x7ff33eb85000, rawbuf=0x7ff32181f010 "show binlog events", length=18,
    parser_state=0x7ff369a604c0) at /git/PS-5.6-trunk_dbg/sql/sql_parse.cc:7066
#15 0x00000000007ec168 in dispatch_command (command=COM_QUERY, thd=0x7ff33eb85000, packet=0x7ff3316d6001 "", packet_length=19)
    at /git/PS-5.6-trunk_dbg/sql/sql_parse.cc:1489
#16 0x00000000007eaf34 in do_command (thd=0x7ff33eb85000) at /git/PS-5.6-trunk_dbg/sql/sql_parse.cc:1062
#17 0x00000000007b23b6 in do_handle_one_connection (thd_arg=0x7ff33eb3a000) at /git/PS-5.6-trunk_dbg/sql/sql_connect.cc:1590
#18 0x00000000007b20bd in handle_one_connection (arg=0x7ff33eb3a000) at /git/PS-5.6-trunk_dbg/sql/sql_connect.cc:1494
#19 0x0000000000b18fa5 in pfs_spawn_thread (arg=0x7ff34c7fb420) at /git/PS-5.6-trunk_dbg/storage/perfschema/pfs.cc:1861
#20 0x00007ff369467e25 in start_thread (arg=0x7ff369a61700) at pthread_create.c:308
#21 0x00007ff36784734d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113