[mythtv] backend crash starting watching DVB

Preston Crow pc-mythtv05a at crowcastle.net
Thu Aug 18 01:50:33 UTC 2005


On Wed, 2005-08-17 at 21:26 -0400, Preston Crow wrote:
> On Wed, 2005-08-17 at 11:52 -0400, Daniel Kristjansson wrote:
> > On Wed, 2005-08-17 at 11:02 -0400, Preston Crow wrote:
> > > I have an HD-2000 card using the DVB driver with kernel 2.6.12.2.  I had
> > > it configured with recent subversion, and it worked correctly.
> > > 
> > > I had some junk in the database from my previous configuration using the
> > > Video4Linux drivers, so I deleted a bunch of channels and transports
> > > from the database, redid the scan, and now the backend crashes when I
> > > try to watch live TV.
> > > 
> > > This is with revision 7043, current as of last night (current now is
> > > 7054).
> > A backtrace would be useful. See:
> >    http://www.mythtv.org/docs/mythtv-HOWTO-21.html#ss21.2
> 
> I compiled with debugging and ran in gdb, but it seems that with changes
> in the last 24 hours, it's working again.  Thanks!

Correction.  It worked the first time I tried it, but it still fails 50%
of the time (twice in four tries).  Here's the backtrace.

I'm downgrading to 7020 because I need to record some HD tomorrow, but I
can test things after that.

--PC

(gdb) thread apply all bt full

Thread 25 (Thread 376848 (LWP 29327)):
#0  0xb636f7db in write () from /lib/libc.so.6
No symbol table info available.
#1  0xb63ddff4 in ?? () from /lib/libc.so.6
No symbol table info available.
#2  0x00000000 in ?? ()
No symbol table info available.
#3  0xb6316412 in _IO_file_write () from /lib/libc.so.6
No symbol table info available.
#4  0xb6314edb in _IO_do_write () from /lib/libc.so.6
No symbol table info available.
#5  0xb6315b0a in _IO_file_sync () from /lib/libc.so.6
No symbol table info available.
#6  0xb630b48a in fflush () from /lib/libc.so.6
No symbol table info available.
#7  0xb6483530 in __gnu_cxx::stdio_sync_filebuf<char, std::char_traits<char> >::file () from /usr/lib/gcc/i686-pc-linux-gnu/3.4.4/libstdc++.so.6
No symbol table info available.
#8  0xb64858d4 in std::ostream::flush ()
   from /usr/lib/gcc/i686-pc-linux-gnu/3.4.4/libstdc++.so.6
No symbol table info available.
#9  0xb648595d in std::flush<char, std::char_traits<char> > ()
   from /usr/lib/gcc/i686-pc-linux-gnu/3.4.4/libstdc++.so.6
No symbol table info available.
#10 0xb64876b9 in std::endl<char, std::char_traits<char> > ()
   from /usr/lib/gcc/i686-pc-linux-gnu/3.4.4/libstdc++.so.6
---Type <return> to continue, or q <return> to quit---
No symbol table info available.
#11 0xb6484bdf in std::ostream::operator<< ()
   from /usr/lib/gcc/i686-pc-linux-gnu/3.4.4/libstdc++.so.6
No symbol table info available.
#12 0xb7cb454b in DVBRecorder::AutoPID (this=0x8147d08) at dvbrecorder.cpp:517
        dtmp = {d = {jd = 2453600}, t = {ds = 78398015}}
        dtime = {static null = {
    static null = <same as static member of an already seen type>, d = 0x80e5458, 
    static shared_null = 0x80e5458}, d = 0x815afe0, 
  static shared_null = 0x80e5458}
        verbose_macro_tmp = <incomplete type>
        Languages = {<QValueList<QString>> = {sh = 0x815cfd8}, <No data fields>}
        StreamTypes = {sh = 0x815e1e0}
        flagged = {sh = 0x815cfa8}
        es = {node = 0x815c388}
#13 0xb7cb08b5 in DVBRecorder::ChannelChanged (this=0x8147d08, chan=@0x8113e8c)
    at dvbrecorder.cpp:156
No locals.
#14 0xb7d062cf in DVBRecorder::qt_invoke (this=0x8147d08, _id=2, _o=0xb06feaf0)
    at moc_dvbrecorder.cpp:85
No locals.
#15 0xb6896c0d in QObject::activate_signal () from /usr/qt/3/lib/libqt-mt.so.3
No symbol table info available.
#16 0xb7d04c81 in DVBChannel::ChannelChanged (this=0x8113d78, t0=@0x8113e8c)
    at moc_dvbchannel.cpp:106
        clist = (struct QConnectionList *) 0x81382d0
        o = {{type = 0x80e2b4c, payload = {b = 16, c = 16 '\020', s = -1520, 
---Type <return> to continue, or q <return> to quit---
      i = -1237452272, l = -1237452272, uc = 16 '\020', us = 64016, 
      ui = 3057515024, ul = 3057515024, f = -2.83087502e-06, 
      d = -2.0441186649346634e-47, byte = "\020ú=¶ôß=¶\030ëo°yb´¶", bytearray = {
        data = 0xb63dfa10 "", size = 3057508340}, ptr = 0xb63dfa10, voidstar = {
        ptr = 0xb63dfa10, owner = 244}, charstar = {ptr = 0xb63dfa10 "", 
        owner = 244}, utf8 = {ptr = 0xb63dfa10 "", owner = 244}, local8bit = {
        ptr = 0xb63dfa10 "", owner = 244}, iface = 0xb63dfa10, 
      idisp = 0xb63dfa10}}, {type = 0x80e2adc, payload = {b = 140, 
      c = -116 '\214', s = 16012, i = 135347852, l = 135347852, uc = 140 '\214', 
      us = 16012, ui = 135347852, ul = 135347852, f = 4.37078738e-34, 
      d = -3.568771744671838e-45, byte = "\214>\021\bÄ_´¶X\017\021\b Ö\025\b", 
      bytearray = {data = 0x8113e8c "ÀÍE\"", size = 3065274308}, ptr = 0x8113e8c, 
      voidstar = {ptr = 0x8113e8c, owner = 196}, charstar = {
        ptr = 0x8113e8c "ÀÍE\"", owner = 196}, utf8 = {ptr = 0x8113e8c "ÀÍE\"", 
        owner = 196}, local8bit = {ptr = 0x8113e8c "ÀÍE\"", owner = 196}, 
      iface = 0x8113e8c, idisp = 0x8113e8c}}}
#17 0xb7c88091 in DVBChannel::RecorderStarted (this=0x8113d78)
    at dvbchannel.cpp:229
No locals.
#18 0xb7cb14d9 in DVBRecorder::Open (this=0x8147d08) at dvbrecorder.cpp:196
No locals.
#19 0xb7cb55cb in DVBRecorder::StartRecording (this=0x8147d08)
    at dvbrecorder.cpp:550
        poll_timeouts = -1238526076
#20 0xb7bb30ce in TVRec::RecorderThread (param=0x8147d30) at tv_rec.cpp:1377
        recorder = (class RecorderBase *) 0x8147d30
#21 0xb64e2cf5 in pthread_start_thread () from /lib/libpthread.so.0
---Type <return> to continue, or q <return> to quit---
No symbol table info available.
#22 0xb64e2e63 in pthread_start_thread_event () from /lib/libpthread.so.0
No symbol table info available.
#23 0xb637d72a in clone () from /lib/libc.so.6
No symbol table info available.

Thread 24 (Thread 360463 (LWP 29326)):
#0  0xb62e1311 in kill () from /lib/libc.so.6
No symbol table info available.
#1  0xb64e6440 in pthread_kill () from /lib/libpthread.so.0
No symbol table info available.
#2  0xb64e67cb in raise () from /lib/libpthread.so.0
No symbol table info available.
#3  0xb62e0c16 in raise () from /lib/libc.so.6
No symbol table info available.
#4  0xb62e2628 in abort () from /lib/libc.so.6
No symbol table info available.
#5  0xb64b47fb in __gnu_cxx::__verbose_terminate_handler ()
   from /usr/lib/gcc/i686-pc-linux-gnu/3.4.4/libstdc++.so.6
No symbol table info available.
#6  0xb64b2435 in __cxa_call_unexpected ()
   from /usr/lib/gcc/i686-pc-linux-gnu/3.4.4/libstdc++.so.6
No symbol table info available.
#7  0xb64b2472 in std::terminate ()
   from /usr/lib/gcc/i686-pc-linux-gnu/3.4.4/libstdc++.so.6
No symbol table info available.
#8  0xb64b25e2 in __cxa_throw ()
---Type <return> to continue, or q <return> to quit---
   from /usr/lib/gcc/i686-pc-linux-gnu/3.4.4/libstdc++.so.6
No symbol table info available.
#9  0xb64b283f in operator new ()
   from /usr/lib/gcc/i686-pc-linux-gnu/3.4.4/libstdc++.so.6
No symbol table info available.
#10 0xb64b28ed in operator new[] ()
   from /usr/lib/gcc/i686-pc-linux-gnu/3.4.4/libstdc++.so.6
No symbol table info available.
#11 0xb6b7e684 in QString::setLength () from /usr/qt/3/lib/libqt-mt.so.3
No symbol table info available.
#12 0xb6b7ee5f in QChar::decomposition () from /usr/qt/3/lib/libqt-mt.so.3
No symbol table info available.
#13 0xb6b7f1eb in QString::arg () from /usr/qt/3/lib/libqt-mt.so.3
No symbol table info available.
#14 0xb7cb42f1 in DVBRecorder::AutoPID (this=0x8147d08) at dvbrecorder.cpp:517
        dtmp = {d = {jd = 2453600}, t = {ds = 78397969}}
        dtime = {static null = {
    static null = <same as static member of an already seen type>, d = 0x80e5458, 
    static shared_null = 0x80e5458}, d = 0x815a288, 
  static shared_null = 0x80e5458}
        verbose_macro_tmp = <incomplete type>
        Languages = {<QValueList<QString>> = {sh = 0x814a498}, <No data fields>}
        StreamTypes = {sh = 0x815cc38}
        flagged = {sh = 0x8147a28}
        es = {node = 0xb63dfa6c}
#15 0xb7cb08b5 in DVBRecorder::ChannelChanged (this=0x8147d08, chan=@0x8113e8c)
    at dvbrecorder.cpp:156
---Type <return> to continue, or q <return> to quit---
No locals.
#16 0xb7d062cf in DVBRecorder::qt_invoke (this=0x8147d08, _id=2, _o=0xb0efd890)
    at moc_dvbrecorder.cpp:85
No locals.
#17 0xb6896c84 in QObject::activate_signal () from /usr/qt/3/lib/libqt-mt.so.3
No symbol table info available.
#18 0xb7d04c81 in DVBChannel::ChannelChanged (this=0x8113d78, t0=@0x8113e8c)
    at moc_dvbchannel.cpp:106
        clist = (struct QConnectionList *) 0x81382d0
        o = {{type = 0x80e2b4c, payload = {b = 164, c = -92 '¤', s = -26460, 
      i = -1209755484, l = -1209755484, uc = 164 '¤', us = 39076, 
      ui = 3085211812, ul = 3085211812, f = -2.72507968e-05, 
      d = -5.6326622032182335e-73, byte = "¤\230ä·¸Øï°º§Ä·yb´¶", bytearray = {
        data = 0xb7e498a4 "\220\025{", size = 2968508600}, ptr = 0xb7e498a4, 
      voidstar = {ptr = 0xb7e498a4, owner = 184}, charstar = {
        ptr = 0xb7e498a4 "\220\025{", owner = 184}, utf8 = {
        ptr = 0xb7e498a4 "\220\025{", owner = 184}, local8bit = {
        ptr = 0xb7e498a4 "\220\025{", owner = 184}, iface = 0xb7e498a4, 
      idisp = 0xb7e498a4}}, {type = 0x80e2adc, payload = {b = 140, 
      c = -116 '\214', s = 16012, i = 135347852, l = 135347852, uc = 140 '\214', 
      us = 16012, ui = 135347852, ul = 135347852, f = 4.37078738e-34, 
      d = -3.568771744671838e-45, byte = "\214>\021\bÄ_´¶X\017\021\b¤\230ä·", 
      bytearray = {data = 0x8113e8c "ÀÍE\"", size = 3065274308}, ptr = 0x8113e8c, 
      voidstar = {ptr = 0x8113e8c, owner = 196}, charstar = {
        ptr = 0x8113e8c "ÀÍE\"", owner = 196}, utf8 = {ptr = 0x8113e8c "ÀÍE\"", 
        owner = 196}, local8bit = {ptr = 0x8113e8c "ÀÍE\"", owner = 196}, 
      iface = 0x8113e8c, idisp = 0x8113e8c}}}
---Type <return> to continue, or q <return> to quit---
#19 0xb7c8d0f2 in DVBChannel::SetPMT (this=0x8113d78, pmt=0x815ae38)
    at dvbchannel.cpp:503
No locals.
#20 0xb7d04d65 in DVBChannel::qt_invoke (this=0x8113d78, _id=3, _o=0xb0efdb10)
    at moc_dvbchannel.cpp:113
No locals.
#21 0xb6896c84 in QObject::activate_signal () from /usr/qt/3/lib/libqt-mt.so.3
No symbol table info available.
#22 0xb7d0454a in SIParser::UpdatePMT (this=0x8153e10, t0=0x815ae38)
    at moc_siparser.cpp:153
        clist = (struct QConnectionList *) 0xb2302b10
        o = {{type = 0x80e2b4c, payload = {b = 12, c = 12 '\f', s = 18188, 
      i = -1305458932, l = -1305458932, uc = 12 '\f', us = 18188, 
      ui = 2989508364, ul = 2989508364, f = -1.02607025e-08, 
      d = -5.634346195949879e-73, byte = "\fG0²(Ûï°a\023K¶`¡\025\b", bytearray = {
        data = 0xb230470c "\003", size = 2968509224}, ptr = 0xb230470c, 
      voidstar = {ptr = 0xb230470c, owner = 40}, charstar = {
        ptr = 0xb230470c "\003", owner = 40}, utf8 = {ptr = 0xb230470c "\003", 
        owner = 40}, local8bit = {ptr = 0xb230470c "\003", owner = 40}, 
      iface = 0xb230470c, idisp = 0xb230470c}}, {type = 0x80e2adc, payload = {
      b = 56, c = 56 '8', s = -20936, i = 135638584, l = 135638584, uc = 56 '8', 
      us = 44600, ui = 135638584, ul = 135638584, f = 4.50428497e-34, 
      d = 2.1890101555702245e-314, 
      byte = "8®\025\b\001\000\000\000 8\025\b\n\000\000", bytearray = {
        data = 0x815ae38 "1", size = 1}, ptr = 0x815ae38, voidstar = {
        ptr = 0x815ae38, owner = true}, charstar = {ptr = 0x815ae38 "1", 
        owner = true}, utf8 = {ptr = 0x815ae38 "1", owner = true}, local8bit = {
---Type <return> to continue, or q <return> to quit---
        ptr = 0x815ae38 "1", owner = true}, iface = 0x815ae38, 
      idisp = 0x815ae38}}}
#23 0xb7c61219 in SIParser::CheckTrackers (this=0x8153e10) at siparser.cpp:169
        hdl = (class PMTHandler *) 0x81537f0
        pmt = (const PMTObject &) @0x815ae38: {PCRPID = 49, ServiceID = 3, 
  PMTPID = 0, CA = {sh = 0x815c420}, Descriptors = {sh = 0x815c658}, 
  Components = {sh = 0x815c668}, hasCA = false, hasAudio = true, hasVideo = true}
        x = 1
        pid = 46670
        filter = 68 'D'
        mask = 15 '\017'
        key1 = 0
        key0 = 3
#24 0xb7c82130 in DVBSIParser::StartSectionReader (this=0x8153e10)
    at dvbsiparser.cpp:259
        ret = 2
        buffer = "\002°j\000\003Á\000\000à1ð!\f\004\200´\201h\016\003À\2367\005\004GA94\020\006À\2367À\b\000\005\004CUEIª\000\002à1ð\031\002\003\"\205_R\001\004\016\003À\226\032\006\001\002\206\aáengÁ?ÿ\201à4ð\031\005\004AC-3\201\003\b<\005\n\004eng\000R\001\216\016\003À\004ëW,°\217\000\001\bó\232í\000\000\0021ð\000\001\tó\233í\000\000\003*ð\000\001\nó\234í\000\000\002\210ð\000\001\vó\235í\000\000\002­ð\000\001\fó\236í\000\000\003bð\000\001\ró\237í\000\000\003Àð\000\001\016ó í\000\000\001Àð\000\001\017ó¡í\000\000\001äð\000\001\020"...
        processed = true
#25 0xb7c7fed9 in DVBSIParser::SystemInfoThread (param=0x8153e10)
    at dvbsiparser.cpp:88
        siparser = (DVBSIParser *) 0x8153e10
---Type <return> to continue, or q <return> to quit---
#26 0xb64e2cf5 in pthread_start_thread () from /lib/libpthread.so.0
No symbol table info available.
#27 0xb64e2e63 in pthread_start_thread_event () from /lib/libpthread.so.0
No symbol table info available.
#28 0xb637d72a in clone () from /lib/libc.so.6
No symbol table info available.

Thread 22 (Thread 327694 (LWP 29323)):
#0  0xb6341ea6 in nanosleep () from /lib/libc.so.6
No symbol table info available.
#1  0x00000000 in ?? ()
No symbol table info available.
#2  0xb6376d5c in usleep () from /lib/libc.so.6
No symbol table info available.
#3  0xb795ae95 in ThreadedFileWriter::DiskLoop (this=0x81a17b0)
    at RingBuffer.cpp:692
        size = 0
        written = 0
        timer = {ds = 78397211}
#4  0xb795a235 in ThreadedFileWriter::boot_writer (wotsit=0x81a17b0)
    at RingBuffer.cpp:526
        fw = (ThreadedFileWriter *) 0x81a17b0
#5  0xb64e2cf5 in pthread_start_thread () from /lib/libpthread.so.0
No symbol table info available.
#6  0xb64e2e63 in pthread_start_thread_event () from /lib/libpthread.so.0
No symbol table info available.
#7  0xb637d72a in clone () from /lib/libc.so.6
---Type <return> to continue, or q <return> to quit---
No symbol table info available.

Thread 15 (Thread 213005 (LWP 29279)):
#0  0xb64e61f4 in __pthread_sigsuspend () from /lib/libpthread.so.0
No symbol table info available.
#1  0xb64e57f9 in __pthread_wait_for_restart_signal () from /lib/libpthread.so.0
No symbol table info available.
#2  0xb64e1fcb in pthread_cond_wait at GLIBC_2.0 () from /lib/libpthread.so.0
No symbol table info available.
#3  0xb64e7851 in __pthread_alt_lock () from /lib/libpthread.so.0
No symbol table info available.
#4  0xb2300e18 in ?? ()
No symbol table info available.

Thread 14 (Thread 196620 (LWP 29278)):
#0  0xb6341ea6 in nanosleep () from /lib/libc.so.6
No symbol table info available.
#1  0x00000001 in ?? ()
No symbol table info available.
#2  0xb1cff7f0 in ?? ()
No symbol table info available.
#3  0x00000000 in ?? ()
No symbol table info available.
#4  0x00000000 in ?? ()
No symbol table info available.
#5  0x0000c350 in ?? ()
No symbol table info available.
---Type <return> to continue, or q <return> to quit---
#6  0xb1cff818 in ?? ()
No symbol table info available.
#7  0xb7bc05f7 in TVRec::SpawnLiveTV (this=0xc0850c45) at tv_rec.cpp:2847
No locals.
#8  0x8be58955 in ?? ()
No symbol table info available.
#9  0xc0850c45 in ?? ()
No symbol table info available.
#10 0x61e81674 in ?? ()
No symbol table info available.
#11 0xc7fff559 in ?? ()
No symbol table info available.
#12 0x00002600 in ?? ()
No symbol table info available.
#13 0xffffb800 in ?? ()
No symbol table info available.
#14 0xc3c9ffff in ?? ()
No symbol table info available.
#15 0x0026748d in ?? ()
No symbol table info available.
#16 0xf5594be8 in ?? ()
No symbol table info available.
#17 0x1600c7ff in ?? ()
No symbol table info available.
#18 0xb8000000 in ?? ()
No symbol table info available.
#19 0xffffffff in ?? ()
---Type <return> to continue, or q <return> to quit---
No symbol table info available.
#20 0x9090c3c9 in ?? ()
No symbol table info available.
#21 0x90909090 in ?? ()
No symbol table info available.
#22 0x90909090 in ?? ()
No symbol table info available.
#23 0x90909090 in ?? ()
No symbol table info available.
#24 0x8be58955 in ?? ()
No symbol table info available.
#25 0xc0850c45 in ?? ()
No symbol table info available.
#26 0x21e81674 in ?? ()
No symbol table info available.
#27 0xc7fff559 in ?? ()
No symbol table info available.
#28 0x00002600 in ?? ()
No symbol table info available.
#29 0xffffb800 in ?? ()
No symbol table info available.
#30 0xc3c9ffff in ?? ()
No symbol table info available.
#31 0x0026748d in ?? ()
No symbol table info available.
#32 0xf5590be8 in ?? ()
No symbol table info available.
---Type <return> to continue, or q <return> to quit---
#33 0x1600c7ff in ?? ()
No symbol table info available.
#34 0xb8000000 in ?? ()
No symbol table info available.
#35 0xffffffff in ?? ()
No symbol table info available.
#36 0x9090c3c9 in ?? ()
No symbol table info available.
#37 0x90909090 in ?? ()
No symbol table info available.
#38 0x90909090 in ?? ()
No symbol table info available.
#39 0x90909090 in ?? ()
No symbol table info available.
#40 0x57e58955 in ?? ()
No symbol table info available.
#41 0xf4758d56 in ?? ()
No symbol table info available.
#42 0x8b04ec83 in ?? ()
No symbol table info available.
#43 0x4d8b087d in ?? ()
No symbol table info available.
#44 0x10558b0c in ?? ()
No symbol table info available.
#45 0x83ff478d in ?? ()
No symbol table info available.
#46 0x470f02f8 in ?? ()
---Type <return> to continue, or q <return> to quit---
No symbol table info available.
#47 0xdf871475 in ?? ()
No symbol table info available.
#48 0x00001ab8 in ?? ()
No symbol table info available.
#49 0x8780cd00 in ?? ()
No symbol table info available.
#50 0xf0003dfb in ?? ()
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#51 0xc689ffff in ?? ()
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#52 0xf2893377 in ?? ()
No symbol table info available.
#53 0xeac1d2f7 in ?? ()
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#54 0x0fff851f in ?? ()
No symbol table info available.
#55 0xd185c195 in ?? ()
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#56 0xff830574 in ?? ()
No symbol table info available.
#57 0x83097603 in ?? ()
No symbol table info available.
#58 0xf08904c4 in ?? ()
No symbol table info available.
#59 0xc3c95f5e in ?? ()
No symbol table info available.
---Type <return> to continue, or q <return> to quit---
#60 0xf5589be8 in ?? ()
No symbol table info available.
#61 0x0000c7ff in ?? ()
No symbol table info available.
#62 0x8b000000 in ?? ()
No symbol table info available.
#63 0xc483f445 in ?? ()
No symbol table info available.
#64 0xc95f5e04 in ?? ()
No symbol table info available.
#65 0xe8def7c3 in ?? ()
No symbol table info available.
#66 0xfff55884 in ?? ()
No symbol table info available.
#67 0xffbe3089 in ?? ()
No symbol table info available.
#68 0xebffffff in ?? ()
No symbol table info available.
#69 0x909090bd in ?? ()
No symbol table info available.
#70 0x90909090 in ?? ()
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#71 0x90909090 in ?? ()
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#72 0x53e58955 in ?? ()
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#73 0xf553c8e8 in ?? ()
---Type <return> to continue, or q <return> to quit---
No symbol table info available.
#74 0x8bc381ff in ?? ()
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#75 0x83000671 in ?? ()
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#76 0x838b04ec in ?? ()
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#77 0x000024cc in ?? ()
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#78 0x0675c085 in ?? ()
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#79 0x5b04c483 in ?? ()
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#80 0x0489c3c9 in ?? ()
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#81 0x06d6e824 in ?? ()
No symbol table info available.
#82 0x83c70000 in ?? ()
No symbol table info available.
#83 0x000024cc in ?? ()
No symbol table info available.
#84 0x00000000 in ?? ()
No symbol table info available.
#85 0x5b04c483 in ?? ()
No symbol table info available.
#86 0xb68dc3c9 in QValueList<QString>::operator== ()
   from /usr/qt/3/lib/libqt-mt.so.3
---Type <return> to continue, or q <return> to quit---
No symbol table info available.
Previous frame inner to this frame (corrupt stack?)
#0  0xb62e1311 in kill () from /lib/libc.so.6
(gdb) 




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