[mythtv-commits] Ticket #9368: MBE segfaults daily, readStringList: Error also MySQL server has gone away

[MythTV]

#9368: MBE segfaults daily, readStringList: Error also MySQL server has gone away
-------------------------------------------------+-------------------------
 Reporter:  David Scammell <davescammell@…>      |           Type:  Bug
   Status:  new                                  |  Report
Milestone:  unknown                              |       Priority:  minor
  Version:  0.23-fixes                           |      Component:  MythTV
 Keywords:                                       |  - General
                                                 |       Severity:  medium
                                                 |  Ticket locked:  0
-------------------------------------------------+-------------------------
 I'm seeing daily or every couple of days crashes of the MBE. See myth.log
 for specifics of the crash. MBE becomes unresponsive.

 I've tried several things in order to resolve, mysql checks of the
 database, backup/restore (full only).  I have followed the TicketHowTo
 wiki page and searched the existing bugs, I can't see that any of the
 existing or past tickets is this exact issue. I have looking at the
 mailing lists (esp. long reschedule issues with mysql). I've rebuilt with
 debug flags per the backtrace wiki and docs pages. Enclosed is the
 backtrace and myth log. Happy to switch the mythbackend -v logging options
 or reproduce anything else thats needed to help find the problem. Thanks
 Dave.

 source build on debian squeeze (2.6.32-5) from git pull 9th december.

 mythtv at bradford:~/build$ mythbackend --version
 Please attach all output as a file in bug reports.
 MythTV Version   : exported
 MythTV Branch    :
 Network Protocol : 23056
 Library API      : 0.23.1.201000710-1
 QT Version       : 4.6.3
 Options compiled in:
  linux debug using_oss using_alsa using_pulse using_jack using_pulseoutput
 using_backend using_directfb using_dvb using_fribidi using_frontend
 using_hdhomerun using_hdpvr using_iptv using_ivtv using_joystick_menu
 using_lirc using_mheg using_opengl_video using_opengl_vsync using_qtdbus
 using_qtwebkit using_v4l using_x11 using_xrandr using_xv using_xvmc
 using_xvmc_vld using_xvmcw using_bindings_perl using_bindings_python
 using_opengl using_ffmpeg_threads using_live using_mheg

 gdbcommands file:
 mythtv at bradford:~/build$ cat gdbcommands
 handle SIGPIPE nostop noprint
 handle SIG33 nostop noprint
 set logging on
 set pagination off
 set breakpoint pending on
 break qFatal
 set args -l myth.log -v record,channel,siparser
 run
 thread apply all bt full
 set logging off

 mysql version and process list at crash/pre-backtrace time

 Welcome to the MySQL monitor.  Commands end with ; or \g.
 Your MySQL connection id is 395
 Server version: 5.1.49-3-log (Debian)

 Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights
 reserved.
 This software comes with ABSOLUTELY NO WARRANTY. This is free software,
 and you are welcome to modify and redistribute it under the GPL v2 license

 Type 'help;' or '\h' for help. Type '\c' to clear the current input
 statement.

 mysql> show processlist;
 +-----+--------+---------------------+-------------+---------+------+-------+------------------+
 | Id  | User   | Host                | db          | Command | Time |
 State | Info             |
 +-----+--------+---------------------+-------------+---------+------+-------+------------------+
 | 122 | mythtv | mythdb.napier:46769 | mythconverg | Sleep   | 2026 |
 | NULL             |
 | 123 | mythtv | mythdb.napier:46770 | mythconverg | Sleep   | 2026 |
 | NULL             |
 | 125 | mythtv | mythdb.napier:46772 | mythconverg | Sleep   | 2027 |
 | NULL             |
 | 133 | mythtv | mythdb.napier:33025 | mythconverg | Sleep   | 2026 |
 | NULL             |
 | 134 | mythtv | mythdb.napier:33026 | mythconverg | Sleep   | 2026 |
 | NULL             |
 | 246 | mythtv | leeds.napier:46090  | mythconverg | Sleep   | 1919 |
 | NULL             |
 | 263 | mythtv | leeds.napier:38216  | mythconverg | Sleep   | 1919 |
 | NULL             |
 | 395 | mythtv | localhost           | mythconverg | Query   |    0 | NULL
 | show processlist |
 +-----+--------+---------------------+-------------+---------+------+-------+------------------+
 8 rows in set (0.00 sec)

-- 
Ticket URL: <http://code.mythtv.org/trac/ticket/9368>
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