[mythtv-commits] Ticket #11378: mythlogserver crashed with SIGSEGV in QObject:: disconnect()

MythTV noreply at mythtv.org
Tue Jan 29 20:55:49 UTC 2013 

#11378: mythlogserver crashed with SIGSEGV in QObject:: disconnect()
------------------------------------+----------------------------
 Reporter:  flaurent@…              |          Owner:  beirdo
     Type:  Bug Report - General    |         Status:  new
 Priority:  minor                   |      Milestone:  unknown
Component:  MythTV - Mythlogserver  |        Version:  0.26-fixes
 Severity:  medium                  |     Resolution:
 Keywords:                          |  Ticket locked:  0
------------------------------------+----------------------------

Comment (by mythtv@…):

 I get this core dump every time I restart my master backend, so I suspect
 a race condition during system startup. In my case, it is occurring on
 mythbuntu 12.10, kernel 3.5.0-22-generic.
 mythbackend --version:
 {{{
 Please attach all output as a file in bug reports.
 MythTV Version : v0.26.0-89-g14aa707
 MythTV Branch : fixes/0.26
 Network Protocol : 75
 Library API : 0.26.20130112-1
 QT Version : 4.8.3
 Options compiled in:
  linux profile use_hidesyms using_alsa using_oss using_pulse
 using_pulseoutput using_backend using_bindings_perl using_bindings_python
 using_bindings_php using_crystalhd using_dvb using_firewire using_frontend
 using_hdhomerun using_ceton using_hdpvr using_iptv using_ivtv
 using_joystick_menu using_libcec using_libcrypto using_libdns_sd
 using_libxml2 using_lirc using_mheg using_opengl_video using_qtwebkit
 using_qtscript using_qtdbus using_v4l2 using_x11 using_xrandr using_xv
 using_bindings_perl using_bindings_python using_bindings_php
 using_mythtranscode using_opengl using_vaapi using_vdpau
 using_ffmpeg_threads using_live using_mheg using_libass using_libxml2
 }}}
  dmesg shows:
 {{{
 [   11.259685] r8169 0000:02:00.0: eth0: link up
 [   11.260068] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
 [   15.898904] init: mythtv-backend main process (1785) terminated with
 status 135
 [   15.898926] init: mythtv-backend main process ended, respawning
 [   82.196388] init: mythtv-backend main process (2062) killed by TERM
 signal
 [   97.864909] show_signal_msg: 21 callbacks suppressed
 [   97.864916] LogServer[1990]: segfault at 0 ip           (null) sp
 00007f6f1420c6f8 error 14 in mythlogserver[400000+3000]
 }}}
 kern.log shows (to give date/time contect):
 {{{
 Jan 29 00:24:37 buus-mbe kernel: [   11.259685] r8169 0000:02:00.0: eth0:
 link up
 Jan 29 00:24:37 buus-mbe kernel: [   11.260068] IPv6:
 ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
 Jan 29 00:26:04 buus-mbe kernel: [   97.864909] show_signal_msg: 21
 callbacks suppressed
 Jan 29 00:26:04 buus-mbe kernel: [   97.864916] LogServer[1990]: segfault
 at 0 ip           (null) sp 00007f6f1420c6f8 error 14 in
 mythlogserver[400000+3000]
 }}}
 mythbackend.log shows:
 {{{
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: C
 thread_unknown mythcommandlineparser.cpp:2545 (ConfigureLogging)
 mythbackend version: fixes/0.26 [v0.26.0-89-g14aa707] www.mythtv.org
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: C
 thread_unknown mythcommandlineparser.cpp:2547 (ConfigureLogging) Qt
 version: compile: 4.8.3, runtime: 4.8.3
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: N
 thread_unknown mythcommandlineparser.cpp:2549 (ConfigureLogging) Enabled
 verbose msgs:  general
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: N
 thread_unknown logging.cpp:837 (logStart) Setting Log Level to LOG_INFO
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: I Logger
 logging.cpp:306 (run) Added logging to the console
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: I
 thread_unknown signalhandling.cpp:194 (SetHandlerPrivate) Setup Interrupt
 handler
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: I
 thread_unknown signalhandling.cpp:194 (SetHandlerPrivate) Setup Terminated
 handler
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: I
 thread_unknown signalhandling.cpp:194 (SetHandlerPrivate) Setup
 Segmentation fault handler
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: I
 thread_unknown signalhandling.cpp:194 (SetHandlerPrivate) Setup Aborted
 handler
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: I
 thread_unknown signalhandling.cpp:194 (SetHandlerPrivate) Setup Bus error
 handler
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: I
 thread_unknown signalhandling.cpp:194 (SetHandlerPrivate) Setup Floating
 point exception handler
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: I
 thread_unknown signalhandling.cpp:194 (SetHandlerPrivate) Setup Illegal
 instruction handler
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: I
 thread_unknown signalhandling.cpp:194 (SetHandlerPrivate) Setup Real-time
 signal 0 handler
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: N
 thread_unknown mythdirs.cpp:55 (InitializeMythDirs) Using runtime prefix =
 /usr
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: N
 thread_unknown mythdirs.cpp:68 (InitializeMythDirs) Using configuration
 directory = /home/mythtv/.mythtv
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: I CoreContext
 mythcorecontext.cpp:231 (Init) Assumed character encoding: en_US.UTF-8
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: N CoreContext
 mythcontext.cpp:493 (LoadDatabaseSettings) Empty LocalHostName.
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: I CoreContext
 mythcontext.cpp:501 (LoadDatabaseSettings) Using localhost value of buus-
 mbe
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: N CoreContext
 mythcorecontext.cpp:1283 (InitLocale) Setting QT default locale to en_US
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: I CoreContext
 mythcorecontext.cpp:1316 (SaveLocaleDefaults) Current locale en_US
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: N CoreContext
 mythlocale.cpp:121 (LoadDefaultsFromXML) Reading locale defaults from
 /usr/share/mythtv//locales/en_us.xml
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: I CoreContext
 schemawizard.cpp:118 (Compare) Current MythTV Schema Version
 (DBSchemaVer): 1307
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: I CoreContext
 mythtranslation.cpp:65 (load) Loading en_us translation for module
 mythfrontend
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: N CoreContext
 main_helpers.cpp:575 (run_backend) MythBackend: Starting up as the master
 server.
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: W CoreContext
 scheduler.cpp:209 (VerifyCards) Scheduler: Listings source 'WOW Analog' is
 defined, but is not attached to a card input.
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: I CoreContext
 programinfo.cpp:2062 (CheckProgramIDAuthorities) Found 1 distinct
 programid authorities
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: I Scheduler
 mythdbcon.cpp:436 (getStaticCon) New static DB connectionSchedCon
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: I CoreContext
 serverpool.cpp:395 (listen) Listening on TCP 127.0.0.1:6544
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: I CoreContext
 serverpool.cpp:395 (listen) Listening on TCP 192.168.1.54:6544
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: I CoreContext
 serverpool.cpp:395 (listen) Listening on TCP [::1]:6544
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: E CoreContext
 serverpool.cpp:407 (listen) Failed listening on TCP
 [fe80::96de:80ff:fe05:4423%eth0]:6544 - Error 9: The address is not
 available
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: E CoreContext
 mediaserver.cpp:86 (Init) MediaServer::HttpServer Create Error
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: I CoreContext
 serverpool.cpp:395 (listen) Listening on TCP 127.0.0.1:6543
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: I CoreContext
 serverpool.cpp:395 (listen) Listening on TCP 192.168.1.54:6543
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: I CoreContext
 serverpool.cpp:395 (listen) Listening on TCP [::1]:6543
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: E CoreContext
 serverpool.cpp:407 (listen) Failed listening on TCP
 [fe80::96de:80ff:fe05:4423%eth0]:6543 - Error 9: The address is not
 available
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: C CoreContext
 main_helpers.cpp:658 (run_backend) Backend exiting, MainServer
 initialization error.
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: I Logger
 logging.cpp:487 (launchLogServer) Starting mythlogserver
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: I SystemManager
 system-unix.cpp:263 (run) Starting process manager
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: I
 SystemSignalManager system-unix.cpp:490 (run) Starting process signal
 handler
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: I
 SystemIOHandlerR system-unix.cpp:90 (run) Starting IO manager (read)
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: I
 SystemIOHandlerW system-unix.cpp:90 (run) Starting IO manager (write)
 Jan 29 00:24:38 buus-mbe mythlogserver: mythbackend[1787]: I Logger
 logging.cpp:447 (initialTimeout) Added logging to mythlogserver at
 TCP:35327
 Jan 29 00:24:42 buus-mbe mythlogserver: mythbackend[2063]: C
 thread_unknown mythcommandlineparser.cpp:2545 (ConfigureLogging)
 mythbackend version: fixes/0.26 [v0.26.0-89-g14aa707] www.mythtv.org
 Jan 29 00:24:42 buus-mbe mythlogserver: mythbackend[2063]: C
 thread_unknown mythcommandlineparser.cpp:2547 (ConfigureLogging) Qt
 version: compile: 4.8.3, runtime: 4.8.3
 Jan 29 00:24:42 buus-mbe mythlogserver: mythbackend[2063]: N
 thread_unknown mythcommandlineparser.cpp:2549 (ConfigureLogging) Enabled
 verbose msgs:  general
 Jan 29 00:24:42 buus-mbe mythlogserver: mythbackend[2063]: N
 thread_unknown logging.cpp:837 (logStart) Setting Log Level to LOG_INFO
 Jan 29 00:24:42 buus-mbe mythlogserver: mythbackend[2063]: I Logger
 logging.cpp:306 (run) Added logging to the console
 Jan 29 00:24:42 buus-mbe mythlogserver: mythbackend[2063]: I
 thread_unknown signalhandling.cpp:194 (SetHandlerPrivate) Setup Interrupt
 handler
 Jan 29 00:24:42 buus-mbe mythlogserver: mythbackend[2063]: I
 thread_unknown signalhandling.cpp:194 (SetHandlerPrivate) Setup Terminated
 handler
 Jan 29 00:24:42 buus-mbe mythlogserver: mythbackend[2063]: I
 thread_unknown signalhandling.cpp:194 (SetHandlerPrivate) Setup
 Segmentation fault handler
 Jan 29 00:24:42 buus-mbe mythlogserver: mythbackend[2063]: I
 thread_unknown signalhandling.cpp:194 (SetHandlerPrivate) Setup Aborted
 handler
 Jan 29 00:24:42 buus-mbe mythlogserver: mythbackend[2063]: I
 thread_unknown signalhandling.cpp:194 (SetHandlerPrivate) Setup Bus error
 handler
 Jan 29 00:24:42 buus-mbe mythlogserver: mythbackend[2063]: I
 thread_unknown signalhandling.cpp:194 (SetHandlerPrivate) Setup Floating
 point exception handler
 Jan 29 00:24:42 buus-mbe mythlogserver: mythbackend[2063]: I
 thread_unknown signalhandling.cpp:194 (SetHandlerPrivate) Setup Illegal
 instruction handler
 Jan 29 00:24:42 buus-mbe mythlogserver: mythbackend[2063]: I
 thread_unknown signalhandling.cpp:194 (SetHandlerPrivate) Setup Real-time
 signal 0 handler
 Jan 29 00:24:42 buus-mbe mythlogserver: mythbackend[2063]: N
 thread_unknown mythdirs.cpp:55 (InitializeMythDirs) Using runtime prefix =
 /usr
 Jan 29 00:24:42 buus-mbe mythlogserver: mythbackend[2063]: N
 thread_unknown mythdirs.cpp:68 (InitializeMythDirs) Using configuration
 directory = /home/mythtv/.mythtv
 Jan 29 00:24:42 buus-mbe mythlogserver: mythbackend[2063]: I CoreContext
 mythcorecontext.cpp:231 (Init) Assumed character encoding: en_US.UTF-8
 Jan 29 00:24:42 buus-mbe mythlogserver: mythbackend[2063]: N CoreContext
 mythcontext.cpp:493 (LoadDatabaseSettings) Empty LocalHostName.
 Jan 29 00:24:42 buus-mbe mythlogserver: mythbackend[2063]: I CoreContext
 mythcontext.cpp:501 (LoadDatabaseSettings) Using localhost value of buus-
 mbe
 Jan 29 00:24:42 buus-mbe mythlogserver: mythbackend[2063]: N CoreContext
 mythcorecontext.cpp:1283 (InitLocale) Setting QT default locale to en_US
 Jan 29 00:24:42 buus-mbe mythlogserver: mythbackend[2063]: I CoreContext
 mythcorecontext.cpp:1316 (SaveLocaleDefaults) Current locale en_US
 Jan 29 00:24:42 buus-mbe mythlogserver: mythbackend[2063]: N CoreContext
 mythlocale.cpp:121 (LoadDefaultsFromXML) Reading locale defaults from
 /usr/share/mythtv//locales/en_us.xml
 Jan 29 00:24:42 buus-mbe mythlogserver: mythbackend[2063]: I CoreContext
 schemawizard.cpp:118 (Compare) Current MythTV Schema Version
 (DBSchemaVer): 1307
 Jan 29 00:24:42 buus-mbe mythlogserver: mythbackend[2063]: I CoreContext
 mythtranslation.cpp:65 (load) Loading en_us translation for module
 mythfrontend
 Jan 29 00:24:42 buus-mbe mythlogserver: mythbackend[2063]: N CoreContext
 main_helpers.cpp:575 (run_backend) MythBackend: Starting up as the master
 server.
 Jan 29 00:24:42 buus-mbe mythlogserver: mythbackend[2063]: W CoreContext
 scheduler.cpp:209 (VerifyCards) Scheduler: Listings source 'WOW Analog' is
 defined, but is not attached to a card input.
 Jan 29 00:24:42 buus-mbe mythlogserver: mythbackend[2063]: I CoreContext
 programinfo.cpp:2062 (CheckProgramIDAuthorities) Found 1 distinct
 programid authorities
 Jan 29 00:24:42 buus-mbe mythlogserver: mythbackend[2063]: I Scheduler
 mythdbcon.cpp:436 (getStaticCon) New static DB connectionSchedCon
 Jan 29 00:24:42 buus-mbe mythlogserver: mythbackend[2063]: I CoreContext
 serverpool.cpp:395 (listen) Listening on TCP 127.0.0.1:6544
 Jan 29 00:24:42 buus-mbe mythlogserver: mythbackend[2063]: I CoreContext
 serverpool.cpp:395 (listen) Listening on TCP 192.168.1.54:6544
 Jan 29 00:24:42 buus-mbe mythlogserver: mythbackend[2063]: I CoreContext
 serverpool.cpp:395 (listen) Listening on TCP [::1]:6544
 Jan 29 00:24:42 buus-mbe mythlogserver: mythbackend[2063]: I CoreContext
 serverpool.cpp:395 (listen) Listening on TCP
 [fe80::96de:80ff:fe05:4423%eth0]:6544
 Jan 29 00:24:42 buus-mbe mythlogserver: mythbackend[2063]: I Logger
 logging.cpp:447 (initialTimeout) Added logging to mythlogserver at
 TCP:35327
 Jan 29 00:24:43 buus-mbe mythlogserver: mythbackend[2063]: I CoreContext
 main_helpers.cpp:645 (run_backend) Main::Registering HttpStatus Extension
 Jan 29 00:24:43 buus-mbe mythlogserver: mythbackend[2063]: I CoreContext
 serverpool.cpp:395 (listen) Listening on TCP 127.0.0.1:6543
 Jan 29 00:24:43 buus-mbe mythlogserver: mythbackend[2063]: I CoreContext
 serverpool.cpp:395 (listen) Listening on TCP 192.168.1.54:6543
 Jan 29 00:24:43 buus-mbe mythlogserver: mythbackend[2063]: I CoreContext
 serverpool.cpp:395 (listen) Listening on TCP [::1]:6543
 Jan 29 00:24:43 buus-mbe mythlogserver: mythbackend[2063]: I CoreContext
 serverpool.cpp:395 (listen) Listening on TCP
 [fe80::96de:80ff:fe05:4423%eth0]:6543
 Jan 29 00:24:43 buus-mbe mythlogserver: mythbackend[2063]: N CoreContext
 autoexpire.cpp:264 (CalcParams) AutoExpire: CalcParams(): Max required
 Free Space: 1.0 GB w/freq: 15 min
 Jan 29 00:24:44 buus-mbe mythlogserver: mythbackend[2063]: I CoreContext
 bonjourregister.cpp:100 (BonjourCallback) Bonjour: Service registration
 complete: name 'Mythbackend on buus-mbe' type '_mythbackend-master._tcp.'
 domain: 'local.'
 Jan 29 00:24:45 buus-mbe mythlogserver: mythbackend[2063]: I Scheduler
 scheduler.cpp:2130 (HandleReschedule) Reschedule requested for MATCH 0 0 0
 - SchedulerInit
 Jan 29 00:24:45 buus-mbe mythlogserver: mythbackend[2063]: I Scheduler
 scheduler.cpp:2243 (HandleReschedule) Scheduled 0 items in 0.0 = 0.02
 match + 0.00 check + 0.00 place
 Jan 29 00:24:45 buus-mbe mythlogserver: mythbackend[2063]: I Scheduler
 scheduler.cpp:2310 (HandleRunSchedulerStartup) Scheduler: Seem to be woken
 up by USER
 Jan 29 00:24:52 buus-mbe mythlogserver: mythbackend[2063]: I HouseKeeping
 housekeeper.cpp:221 (RunHouseKeeping) Running housekeeping thread
 Jan 29 00:24:52 buus-mbe mythlogserver: mythbackend[2063]: I HouseKeeping
 housekeeper.cpp:309 (RunHouseKeeping) Running mythfilldatabase
 Jan 29 00:24:52 buus-mbe mythlogserver: mythbackend[2063]: I SystemManager
 system-unix.cpp:263 (run) Starting process manager
 Jan 29 00:24:52 buus-mbe mythlogserver: mythbackend[2063]: I
 SystemSignalManager system-unix.cpp:490 (run) Starting process signal
 handler
 Jan 29 00:24:52 buus-mbe mythlogserver: mythbackend[2063]: I
 SystemIOHandlerR system-unix.cpp:90 (run) Starting IO manager (read)
 Jan 29 00:24:52 buus-mbe mythlogserver: mythbackend[2063]: I
 SystemIOHandlerW system-unix.cpp:90 (run) Starting IO manager (write)
 Jan 29 00:25:48 buus-mbe mythlogserver: mythbackend[2063]: C CoreContext
 signalhandling.cpp:305 (handleSignal) Received Terminated: Code 0, PID 1,
 UID 0, Value 0x00000000
 Jan 29 00:25:48 buus-mbe mythlogserver: mythbackend[2063]: N CoreContext
 main_helpers.cpp:683 (run_backend) MythBackend exiting
 Jan 29 00:25:48 buus-mbe mythlogserver: mythbackend[2063]: I CoreContext
 system-unix.cpp:751 (Signal) Child PID 2123 killed with Terminated
 Jan 29 00:25:49 buus-mbe mythlogserver: mythbackend[2063]: E MythFillDB
 housekeeper.cpp:464 (RunMFD) MythFillDatabase command
 '/usr/bin/mythfilldatabase  --verbose general --loglevel info --nodblog
 --syslog local7 ' failed
 Jan 29 00:25:49 buus-mbe mythlogserver: mythbackend[2063]: I CoreContext
 bonjourregister.cpp:26 (~BonjourRegister) Bonjour: De-registering service
 '_mythbackend-master._tcp.' on 'Mythbackend on buus-mbe'
 Jan 29 00:25:50 buus-mbe mythlogserver: mythbackend[2063]: I CoreContext
 mythcontext.cpp:1169 (~MythContext) Waiting for threads to exit.
 }}}

-- 
Ticket URL: <http://code.mythtv.org/trac/ticket/11378#comment:3>
MythTV <http://code.mythtv.org/trac>
MythTV Media Center

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