Opened 12 years ago

Closed 12 years ago

#11378 closed Bug Report - General (Duplicate)

mythlogserver crashed with SIGSEGV in QObject:: disconnect()

Reported by: flaurent@… Owned by: beirdo
Priority: minor Milestone: unknown
Component: MythTV - Mythlogserver Version: 0.26-fixes
Severity: medium Keywords:
Cc: Ticket locked: no

Description

Originally reported at:

​https://bugs.launchpad.net/bugs/1105512

Attachments (1)

stacktrace.txt​ (74.3 KB) - added by Raymond Wagner 12 years ago.

Download all attachments as: .zip

Change History (7)

comment:1 Changed 12 years ago by Raymond Wagner

Resolution: → Invalid
Status: new → closed

URL is invalid.

comment:2 Changed 12 years ago by Raymond Wagner

Resolution: Invalid
Status: closed → new
Version: Unspecified → 0.26-fixes

Launchpad bug unlocked by Mythbuntu dev.

Changed 12 years ago by Raymond Wagner

Attachment: stacktrace.txt​ added

comment:3 Changed 12 years ago 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.

comment:4 Changed 12 years ago by mythtv@…

I believe this is caused by a bug in nzmqt. It has been reported here: ​https://github.com/jonnydee/nzmqt/issues/8 This ticket is probably a dup of one of the following: ​http://code.mythtv.org/trac/ticket/10924 ​http://code.mythtv.org/trac/ticket/11043 ​http://code.mythtv.org/trac/ticket/11360

comment:5 Changed 12 years ago by faginbagin <mythtv@…>

See #10924 for a patch that I believe will resolve this problem.

comment:6 Changed 12 years ago by JYA

Resolution: → Duplicate
Status: new → closed

Duplicate of #10924

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