/opt/dvb/mythtv# gdb -c /var/crash/core_mythtranscode.1267 -se `which mythtranscode`
GNU gdb (Ubuntu/Linaro 7.3-0ubuntu2) 7.3-2011.08
Copyright (C) 2011 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
For bug reporting instructions, please see:
<http://bugs.launchpad.net/gdb-linaro/>...
Reading symbols from /usr/local/bin/mythtranscode...done.
[New LWP 1267]
[New LWP 1268]
[New LWP 1271]
[New LWP 1269]
[New LWP 1275]

warning: Can't read pathname for load map: Input/output error.
[Thread debugging using libthread_db enabled]
Core was generated by `mythtranscode --fifoinfo --profile autodetect --chanid 29724 --starttime 200812'.
Program terminated with signal 11, Segmentation fault.
#0  0x00007f025b2319e6 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
(gdb) thr a a bt

Thread 5 (Thread 0x7f0242bfc700 (LWP 1275)):
#0  0x00007f025b293613 in select () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f025cc0203d in MythSocketThread::run (this=0x1cb7890) at mythsocketthread.cpp:263
#2  0x00007f025cbeba47 in MThreadInternal::run (this=0x1c71fb0) at mthread.cpp:78
#3  0x00007f025bd7ed05 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#4  0x00007f02541f4454 in ?? () from /usr/lib/libGL.so.1
#5  0x00007f025c3e1efc in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#6  0x00007f025b29a59d in clone () from /lib/x86_64-linux-gnu/libc.so.6
#7  0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f024b95f700 (LWP 1269)):
#0  0x00007f025c3e63cb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007f025bd7f11e in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#2  0x00007f025ccb35c5 in LoggerThread::run (this=0x1c62380) at logging.cpp:826
#3  0x00007f025cbeba47 in MThreadInternal::run (this=0x1c29fc0) at mthread.cpp:78
#4  0x00007f025bd7ed05 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#5  0x00007f02541f4454 in ?? () from /usr/lib/libGL.so.1
#6  0x00007f025c3e1efc in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#7  0x00007f025b29a59d in clone () from /lib/x86_64-linux-gnu/libc.so.6
#8  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f024ab21700 (LWP 1271)):
#0  0x00007f025b26621d in nanosleep () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f025b293e54 in usleep () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f025c742569 in ProgramInfoUpdater::run (this=0x1c31550) at programinfoupdater.cpp:57
#3  0x00007f025cbee79c in MPoolThread::run (this=0x7f0244076050) at mthreadpool.cpp:87
#4  0x00007f025cbeba47 in MThreadInternal::run (this=0x7f0244074bd0) at mthread.cpp:78
#5  0x00007f025bd7ed05 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
---Type <return> to continue, or q <return> to quit---
#6  0x00007f02541f4454 in ?? () from /usr/lib/libGL.so.1
#7  0x00007f025c3e1efc in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#8  0x00007f025b29a59d in clone () from /lib/x86_64-linux-gnu/libc.so.6
#9  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f024c160700 (LWP 1268)):
#0  0x00007f025c3e63cb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007f025bd7f11e in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#2  0x00007f025ccb2d38 in DBLoggerThread::run (this=0x1c6d960) at logging.cpp:649
#3  0x00007f025cbeba47 in MThreadInternal::run (this=0x1c6d5c0) at mthread.cpp:78
#4  0x00007f025bd7ed05 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#5  0x00007f02541f4454 in ?? () from /usr/lib/libGL.so.1
#6  0x00007f025c3e1efc in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#7  0x00007f025b29a59d in clone () from /lib/x86_64-linux-gnu/libc.so.6
#8  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f025f3c07c0 (LWP 1267)):
#0  0x00007f025b2319e6 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f025b232a4f in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f025b2353cd in malloc () from /lib/x86_64-linux-gnu/libc.so.6
#3  0x00007f02541f3a55 in ?? () from /usr/lib/libGL.so.1
#4  0x00007f0250e84e91 in ?? () from /usr/lib/tls/libnvidia-tls.so.295.33
#5  0x00007f025bd80b61 in QByteArray::QByteArray(int, char) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#6  0x00007f025bd75121 in qt_error_string(int) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#7  0x00007f025bd7da3a in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#8  0x00007f025bd7dbf2 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#9  0x00007f025bd7a345 in QMutex::lock() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#10 0x00007f025e7027fd in QMutexLocker::QMutexLocker (this=0x7fffb22fe4d0, m=0x7f0244076648)
    at /usr/include/qt4/QtCore/qmutex.h:102
---Type <return> to continue, or q <return> to quit---
#11 0x00007f025ea3591b in PlayerContext::SetPlayer (this=0x7f0244076570, newplayer=0x0) at playercontext.cpp:791
#12 0x00007f025ea31e53 in PlayerContext::TeardownPlayer (this=0x7f0244076570) at playercontext.cpp:65
#13 0x00007f025ea31cab in PlayerContext::~PlayerContext (this=0x7f0244076570, __in_chrg=<optimized out>)
    at playercontext.cpp:54
#14 0x00000000004188f8 in Transcode::~Transcode (this=0x1ca9a80, __in_chrg=<optimized out>) at transcode.cpp:751
#15 0x0000000000418ad4 in Transcode::~Transcode (this=0x1ca9a80, __in_chrg=<optimized out>) at transcode.cpp:759
#16 0x000000000040f53c in main (argc=8, argv=0x7fffb22ff668) at main.cpp:599
(gdb)