[mythtv-users] mythfilldatabase segfaulting

Fri Jan 14 16:50:38 UTC 2022

On 14/01/2022 16:22, John Hoyt wrote:
>     Are you able to get a backtrace so we can narrow this down?
> 
> 
> I have one now - but it's a large file (9.3mb).  Is there a suggested 
> place to upload it to (possibly github with a ticket)?
> 
> Here's a truncated version
> 
>     (gdb) handle SIG33 pass nostop noprint
>     Signal        Stop Print Pass to program Description
>     SIG33         No No Yes Real-time event 33
>     (gdb) set pagination 0
>     (gdb) run -v
>     Starting program: /usr/bin/mythfilldatabase -v
>     [Thread debugging using libthread_db enabled]
>     Using host libthread_db library
>     "/lib/x86_64-linux-gnu/libthread_db.so.1".
>     [New Thread 0x7fffe8b1a700 (LWP 3358)]
>     [New Thread 0x7fffe3fff700 (LWP 3359)]
>     2022-01-14 10:53:23.670263 C  mythfilldatabase version: master
>     [v32.0~master.202201122333.d392ac9f16~ubuntu20.04.1] www.mythtv.org
>     <http://www.mythtv.org>
>     2022-01-14 10:53:23.670269 C  Qt version: compile: 5.12.8, runtime:
>     5.12.8
>     2022-01-14 10:53:23.670286 I  Ubuntu 20.04.3 LTS (x86_64)
>     2022-01-14 10:53:23.670287 N  Enabled verbose msgs:  general
>     2022-01-14 10:53:23.670291 N  Setting Log Level to LOG_INFO
>     2022-01-14 10:53:23.681551 I  Added logging to the console
>     2022-01-14 10:53:23.681869 I  Setup Interrupt handler
>     2022-01-14 10:53:23.681887 I  Setup Terminated handler
>     2022-01-14 10:53:23.681889 I  Setup Segmentation fault handler
>     2022-01-14 10:53:23.681892 I  Setup Aborted handler
>     2022-01-14 10:53:23.681894 I  Setup Bus error handler
>     2022-01-14 10:53:23.681896 I  Setup Floating point exception handler
>     2022-01-14 10:53:23.681898 I  Setup Illegal instruction handler
>     2022-01-14 10:53:23.681906 I  Setup Real-time signal 0 handler
>     2022-01-14 10:53:23.681909 I  Setup Hangup handler
>     2022-01-14 10:53:23.681986 N  Using runtime prefix = /usr
>     2022-01-14 10:53:23.681987 N  Using configuration directory =
>     /home/mythtv/.mythtv
>     2022-01-14 10:53:23.682001 I  Assumed character encoding: en_US.UTF-8
>     2022-01-14 10:53:23.682223 I  Empty LocalHostName. This is typical.
>     2022-01-14 10:53:23.682224 I  Using a profile name of: 'mythtv'
>     (Usually the same as this host's name.)
>     2022-01-14 10:53:23.682243 I  Start up testing connections. DB
>     192.168.0.9, BE , attempt 0, status dbAwake, Delay: 2000
>     [New Thread 0x7fffe30ca700 (LWP 3360)]
>     2022-01-14 10:53:24.207615 N  Setting QT default locale to en_US
>     2022-01-14 10:53:24.207620 I  Current locale en_US
>     2022-01-14 10:53:24.207641 N  Reading locale defaults from
>     /usr/share/mythtv//locales/en_us.xml
>     2022-01-14 10:53:24.221214 I  PowerDBus: Failed to delay
>     sleep,shutdown: Permission denied
>     2022-01-14 10:53:24.224530 I  PowerDBus: Added UPower.Device
>     '/org/freedesktop/UPower/devices/ups_hiddev0'
>     2022-01-14 10:53:24.224825 I  Power: On AC power
>     2022-01-14 10:53:24.267038 I  Power: Supported actions: None
>     2022-01-14 10:53:24.269350 I  Loading en_us translation for module
>     mythfrontend
>     2022-01-14 10:53:24.276352 I  Current MythTV Schema Version
>     (DBSchemaVer): 1372
>     [New Thread 0x7fffe28c9700 (LWP 3361)]
>     2022-01-14 10:53:24.287768 I
>       MythCoreContext::ConnectCommandSocket(): Connecting to backend
>     server: 192.168.0.9:6543 <http://192.168.0.9:6543> (try 1 of 1)
>     2022-01-14 10:53:24.290275 I  MythCoreContext::CheckProtoVersion():
>     Using protocol version 91 BuzzOff
>     2022-01-14 10:53:24.291271 I  Opening blocking connection to master
>     backend
>     [New Thread 0x7fffe20c8700 (LWP 3364)]
>     [New Thread 0x7fffe18c7700 (LWP 3365)]
>     [New Thread 0x7fffe10c6700 (LWP 3366)]
>     [New Thread 0x7fffe08c5700 (LWP 3367)]
>     [Detaching after fork from child process 3368]
>     2022-01-14 10:53:24.595447 I  Updating source #2 (FiOS) with grabber
>     tv_grab_zz_sdjson_sqlite
>     2022-01-14 10:53:24.596500 I  Found 168 channels for source 2 which
>     use grabber
>     2022-01-14 10:53:24.596934 I  Starting process manager
>     2022-01-14 10:53:24.597095 I  Starting process signal handler
>     2022-01-14 10:53:24.597284 I  Starting IO manager (read)
>     2022-01-14 10:53:24.597508 I  Starting IO manager (write)
>     [Detaching after fork from child process 3371]
>     2022-01-14 10:53:24.997939 I  Grabber has capabilities: baseline
>     manualconfig preferredmethod lineups apiconfig
>     [Detaching after fork from child process 3373]
>     2022-01-14 10:53:25.398697 I  Grabber prefers method: allatonce
>     2022-01-14 10:53:25.399494 I  XMLTV config file is:
>     /home/mythtv/.mythtv/FiOS.xmltv
>     [Detaching after fork from child process 3376]
>     [Detaching after fork from child process 3379]
> 
>     Thread 1 "mythfilldatabas" received signal SIGSEGV, Segmentation fault.
>     0x00007ffff63f0fce in ?? () from /lib/x86_64-linux-gnu/libc.so.6
>     (gdb) backtrace full
>     #0  0x00007ffff63f0fce in  () at /lib/x86_64-linux-gnu/libc.so.6
>     #1  0x00007ffff63f3419 in malloc () at /lib/x86_64-linux-gnu/libc.so.6
>     #2  0x00007ffff680f241 in QArrayData::allocate(unsigned long,
>     unsigned long, unsigned long, QFlags<QArrayData::AllocationOption>)
>     () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
>     #3  0x00007ffff6884fb8 in QString::reallocData(unsigned int, bool)
>     () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
>     #4  0x00007ffff7b0bd41 in QString::squeeze() (this=0x7fffff7ff198)
>     at /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:1151
>     #5  DBEvent::Squeeze() (this=this at entry=0x7fffff7ff190) at
>     programdata.cpp:291
>     #6  0x00007ffff7b10d47 in DBEvent::DBEvent(DBEvent const&)
>     (this=0x7fffff7ff190, other=...) at programdata.cpp:286
>     #7  0x00007ffff7b10df4 in DBEvent::operator=(DBEvent const&)
>     (this=0x555555738630, other=...) at programdata.cpp:235
>          ...
>          snip
>          ...
>     #37427 0x00007ffff7b10dff in DBEvent::operator=(DBEvent const&)
>     (this=0x555555738630, other=...) at programdata.cpp:235
>     #37428 0x00007ffff7b10e76 in ProgInfo::operator=(ProgInfo const&)
>     (other=..., this=0x555555738630) at programdata.cpp:1264
>     #37429 ProgInfo::operator=(ProgInfo const&) (this=0x555555738630,
>     other=...) at programdata.cpp:1259
>     #37430 0x00007ffff7b11305 in ProgInfo::ProgInfo(ProgInfo const&)
>     (this=0x555555738630, other=...) at programdata.cpp:1256
>     #37431 0x0000555555582c08 in
>     QList<ProgInfo>::node_construct(QList<ProgInfo>::Node*, ProgInfo
>     const&) (this=0x5555557b6a80, n=0x5555557b6f90, t=...) at
>     /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:436
>     #37432 QList<ProgInfo>::append(ProgInfo const&)
>     (this=this at entry=0x5555557b6a80, t=...) at
>     /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:587
>     #37433 0x0000555555580223 in QList<ProgInfo>::push_back(ProgInfo
>     const&) (t=..., this=0x5555557b6a80) at
>     /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:363
>     #37434 XMLTVParser::parseFile(QString const&,
>     std::vector<ChannelInfo, std::allocator<ChannelInfo> >*,
>     QMap<QString, QList<ProgInfo> >*) (this=this at entry=0x7fffffffe450,
>     filename=..., chanlist=chanlist at entry=0x7fffffffdd60,
>     proglist=proglist at entry=0x7fffffffdd50) at xmltvparser.cpp:810
>     #37435 0x0000555555566c7b in FillData::GrabDataFromFile(int, QString
>     const&) (this=0x7fffffffe440, id=2, filename=...) at filldata.cpp:94
>     #37436 0x000055555556a363 in FillData::GrabData(Source const&, int)
>     (this=0x7fffffffe440, source=..., offset=<optimized out>) at
>     filldata.cpp:234
>     #37437 0x000055555556dd5b in FillData::Run(std::vector<Source,
>     std::allocator<Source> >&) (this=0x7fffffffe440,
>     sourcelist=std::vector of length 1, capacity 1 = {...}) at
>     filldata.cpp:444
>     #37438 0x0000555555564b2e in main(int, char**) (argc=<optimized
>     out>, argv=<optimized out>) at main.cpp:406
>

Can you do `thread apply all bt full` in gdb and share the output please

Regards
Stuart