[mythtv] Backend crash when tuning to an invalid channel with HD-PVR
Ian Forde
ianforde at gmail.com
Mon Feb 21 20:25:28 UTC 2011
I've finally gotten around to testing the scenario again where what I
thought was a valid channel on my cable lineup isn't recognized by my
DCT-6200. Instead of tuning to channel 840 as requested, it tunes to
847, which is not a channel that I currently receive. Yes - that's a
lineup issue, but the thing is that the backend crashes.
So I followed the instructions on http://www.mythtv.org/wiki/Debugging
and got a backtrace... (pasted at the bottom)
For now I'm just going to remove the channels from my lineup, but I'm
hoping this helps somebody...
-I
OS: Ubuntu 10.10 fully patched
MythTV Version : v0.25pre-1205-geb573d2-dirty
MythTV Branch : master
Network Protocol : 64
Library API : 0.25.20110216-1
QT Version : 4.7.0
Options compiled in:
linux debug use_hidesyms using_alsa using_oss using_pulse
using_pulseoutput using_backend using_bindings_perl
using_bindings_python using_bindings_php using_dvb using_firewire
using_frontend using_hdhomerun using_hdpvr using_iptv using_ivtv
using_joystick_menu using_libfftw3 using_lirc using_mheg
using_opengl_video using_qtdbus using_qtwebkit using_v4l using_x11
using_xv using_xvmc using_xvmc_vld using_xvmcw using_bindings_perl
using_bindings_python using_bindings_php using_mythtranscode
using_opengl using_vdpau using_ffmpeg_threads using_live using_mheg
Here's the backtrace...
(gdb) thread apply all bt
Thread 33 (Thread 31987):
#0 0xb77f6424 in __kernel_vsyscall ()
#1 0xb5341884 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
from /lib/libpthread.so.0
#2 0xb435494f in QWaitCondition::wait(QMutex*, unsigned long) ()
from /usr/lib/libQtCore.so.4
#3 0xb73f869f in EITScanner::RunEventLoop (this=0x9faffb8) at
eitscanner.cpp:159
#4 0xb73f74cc in EITThread::run (this=0x9faffc8) at eitscanner.cpp:30
#5 0xb4353df9 in ?? () from /usr/lib/libQtCore.so.4
#6 0xb527bba8 in ?? () from /usr/lib/nvidia-current/libGL.so.1
Thread 32 (Thread 32001):
#0 0xb77f6424 in __kernel_vsyscall ()
#1 0xb53414dc in pthread_cond_wait@@GLIBC_2.3.2 ()
from /lib/libpthread.so.0
#2 0xb43549c7 in QWaitCondition::wait(QMutex*, unsigned long) ()
from /usr/lib/libQtCore.so.4
#3 0x080d1cc9 in ProcessRequestThread::run (this=0xad11cd08) at
mainserver.cpp:152
#4 0xb4353df9 in ?? () from /usr/lib/libQtCore.so.4
#5 0xb527bba8 in ?? () from /usr/lib/nvidia-current/libGL.so.1
Thread 31 (Thread 31975):
#0 0xb77f6424 in __kernel_vsyscall ()
#1 0xb5341884 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
from /lib/libpthread.so.0
#2 0xb435333e in ?? () from /usr/lib/libQtCore.so.4
#3 0xb43533fd in QThread::usleep(unsigned long) ()
from /usr/lib/libQtCore.so.4
#4 0xb62bbea9 in MythSystemSignalManager::run (this=0x9f834f0) at
system-unix.cpp:430
#5 0xb4353df9 in ?? () from /usr/lib/libQtCore.so.4
#6 0xb527bba8 in ?? () from /usr/lib/nvidia-current/libGL.so.1
Thread 30 (Thread 31972):
#0 0xb77f6424 in __kernel_vsyscall ()
#1 0xb5341884 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
from /lib/libpthread.so.0
#2 0xb435333e in ?? () from /usr/lib/libQtCore.so.4
#3 0xb4353493 in QThread::msleep(unsigned long) ()
from /usr/lib/libQtCore.so.4
#4 0xb633e684 in TaskQueue::run (this=0x9f80010) at taskqueue.cpp:126
#5 0xb4353df9 in ?? () from /usr/lib/libQtCore.so.4
#6 0xb527bba8 in ?? () from /usr/lib/nvidia-current/libGL.so.1
Thread 29 (Thread 32002):
#0 0xb77f6424 in __kernel_vsyscall ()
#1 0xb53414dc in pthread_cond_wait@@GLIBC_2.3.2 ()
from /lib/libpthread.so.0
#2 0xb43549c7 in QWaitCondition::wait(QMutex*, unsigned long) ()
from /usr/lib/libQtCore.so.4
#3 0xb743475f in TVRec::WaitForEventThreadSleep (this=0xb0411058,
wake=true, time=4294967295) at tv_rec.cpp:1644
#4 0xb7441ea7 in TVRec::StopLiveTV (this=0xb0411058) at tv_rec.cpp:2950
#5 0x0807823f in EncoderLink::StopLiveTV (this=0xad1008e0) at
encoderlink.cpp:641
#6 0x080b7e81 in MainServer::HandleRecorderQuery (this=0x9fd6c40,
slist=..., commands=..., pbs=0xa060000) at mainserver.cpp:3690
#7 0x0809300e in MainServer::ProcessRequestWork (this=0x9fd6c40,
sock=0xa47b2610) at mainserver.cpp:522
#8 0x080913f0 in MainServer::ProcessRequest (this=0x9fd6c40,
sock=0xa47b2610) at mainserver.cpp:310
#9 0x080d1cfc in ProcessRequestThread::run (this=0xad1163f8) at
mainserver.cpp:160
#10 0xb4353df9 in ?? () from /usr/lib/libQtCore.so.4
#11 0xb527bba8 in ?? () from /usr/lib/nvidia-current/libGL.so.1
Thread 28 (Thread 31993):
#0 0xb77f6424 in __kernel_vsyscall ()
#1 0xb5341884 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
from /lib/libpthread.so.0
#2 0xb435494f in QWaitCondition::wait(QMutex*, unsigned long) ()
from /usr/lib/libQtCore.so.4
#3 0xb73f869f in EITScanner::RunEventLoop (this=0x9f8f8b0) at
eitscanner.cpp:159
#4 0xb73f74cc in EITThread::run (this=0x9f8f8c0) at eitscanner.cpp:30
#5 0xb4353df9 in ?? () from /usr/lib/libQtCore.so.4
#6 0xb527bba8 in ?? () from /usr/lib/nvidia-current/libGL.so.1
Thread 27 (Thread 32079):
#0 0xb77f6424 in __kernel_vsyscall ()
#1 0xb5341884 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
from /lib/libpthread.so.0
#2 0xb435494f in QWaitCondition::wait(QMutex*, unsigned long) ()
from /usr/lib/libQtCore.so.4
#3 0xb7052689 in ThreadedFileWriter::DiskLoop (this=0xa47d6f10) at
ThreadedFileWriter.cpp:483
#4 0xb704fdd3 in TFWWriteThread::run (this=0xa47d6f5c) at
ThreadedFileWriter.cpp:117
#5 0xb4353df9 in ?? () from /usr/lib/libQtCore.so.4
#6 0xb527bba8 in ?? () from /usr/lib/nvidia-current/libGL.so.1
Thread 26 (Thread 32023):
#0 0xb77f6424 in __kernel_vsyscall ()
#1 0xb41450f3 in ?? () from /lib/libc.so.6
#2 0xb40f2c9b in ?? () from /lib/libc.so.6
Backtrace stopped: previous frame identical to this frame (corrupt
stack?)
Thread 25 (Thread 32099):
#0 0xb77f6424 in __kernel_vsyscall ()
#1 0xb41450f3 in ?? () from /lib/libc.so.6
#2 0xb40d965f in ?? () from /lib/libc.so.6
Backtrace stopped: previous frame identical to this frame (corrupt
stack?)
Thread 24 (Thread 32100):
#0 0xb77f6424 in __kernel_vsyscall ()
#1 0xb53414dc in pthread_cond_wait@@GLIBC_2.3.2 ()
from /lib/libpthread.so.0
#2 0xb4352ef2 in ?? () from /usr/lib/libQtCore.so.4
#3 0xb434e5ea in QMutex::lock() () from /usr/lib/libQtCore.so.4
#4 0x080a3591 in MainServer::DoDeleteThread (this=0x9fd6c40,
ds=0xb0437318) at mainserver.cpp:1769
#5 0x080a3517 in MainServer::SpawnDeleteThread (param=0xb0437318) at
mainserver.cpp:1755
#6 0xb527bba8 in ?? () from /usr/lib/nvidia-current/libGL.so.1
Thread 23 (Thread 32098):
#0 0xb77f6424 in __kernel_vsyscall ()
#1 0xb5341884 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
from /lib/libpthread.so.0
#2 0xb435494f in QWaitCondition::wait(QMutex*, unsigned long) ()
from /usr/lib/libQtCore.so.4
#3 0xb43485b3 in ?? () from /usr/lib/libQtCore.so.4
#4 0xb4353df9 in ?? () from /usr/lib/libQtCore.so.4
#5 0xb527bba8 in ?? () from /usr/lib/nvidia-current/libGL.so.1
Thread 22 (Thread 31995):
#0 0xb77f6424 in __kernel_vsyscall ()
#1 0xb41001a6 in nanosleep () from /lib/libc.so.6
#2 0xb40fffa0 in sleep () from /lib/libc.so.6
#3 0x08122b3c in HouseKeeper::RunHouseKeeping (this=0x9fd2600) at
housekeeper.cpp:301
#4 0x081274c1 in HouseKeeper::doHouseKeepingThread (param=0x9fd2600) at
housekeeper.cpp:699
#5 0xb527bba8 in ?? () from /usr/lib/nvidia-current/libGL.so.1
Thread 21 (Thread 32101):
#0 0xb77f6424 in __kernel_vsyscall ()
#1 0xb53414dc in pthread_cond_wait@@GLIBC_2.3.2 ()
from /lib/libpthread.so.0
#2 0xb4352ef2 in ?? () from /usr/lib/libQtCore.so.4
#3 0xb434e5ea in QMutex::lock() () from /usr/lib/libQtCore.so.4
#4 0x080a3591 in MainServer::DoDeleteThread (this=0x9fd6c40,
ds=0xb04177b8) at mainserver.cpp:1769
#5 0x080a3517 in MainServer::SpawnDeleteThread (param=0xb04177b8) at
mainserver.cpp:1755
#6 0xb527bba8 in ?? () from /usr/lib/nvidia-current/libGL.so.1
Thread 20 (Thread 32004):
#0 0xb77f6424 in __kernel_vsyscall ()
#1 0xb4130371 in select () from /lib/libc.so.6
#2 0xb61e7add in MythSocketThread::run (this=0x9f28ab0) at
mythsocketthread.cpp:260
#3 0xb4353df9 in ?? () from /usr/lib/libQtCore.so.4
#4 0xb527bba8 in ?? () from /usr/lib/nvidia-current/libGL.so.1
Thread 19 (Thread 32003):
#0 0xb77f6424 in __kernel_vsyscall ()
#1 0xb53414dc in pthread_cond_wait@@GLIBC_2.3.2 ()
from /lib/libpthread.so.0
#2 0xb43549c7 in QWaitCondition::wait(QMutex*, unsigned long) ()
from /usr/lib/libQtCore.so.4
#3 0x080d1cc9 in ProcessRequestThread::run (this=0xad118360) at
mainserver.cpp:152
#4 0xb4353df9 in ?? () from /usr/lib/libQtCore.so.4
#5 0xb527bba8 in ?? () from /usr/lib/nvidia-current/libGL.so.1
Thread 18 (Thread 31999):
#0 0xb77f6424 in __kernel_vsyscall ()
#1 0xb53414dc in pthread_cond_wait@@GLIBC_2.3.2 ()
from /lib/libpthread.so.0
#2 0xb43549c7 in QWaitCondition::wait(QMutex*, unsigned long) ()
from /usr/lib/libQtCore.so.4
#3 0x080d1cc9 in ProcessRequestThread::run (this=0xad10ea68) at
mainserver.cpp:152
#4 0xb4353df9 in ?? () from /usr/lib/libQtCore.so.4
#5 0xb527bba8 in ?? () from /usr/lib/nvidia-current/libGL.so.1
Thread 17 (Thread 31997):
#0 0xb77f6424 in __kernel_vsyscall ()
#1 0xb41001a6 in nanosleep () from /lib/libc.so.6
#2 0xb40fffa0 in sleep () from /lib/libc.so.6
#3 0xb6f4d179 in JobQueue::ProcessQueue (this=0xad10be90) at
jobqueue.cpp:467
#4 0xb6f47508 in JobQueue::RunQueueProcesser (this=0xad10be90) at
jobqueue.cpp:150
#5 0xb6f47532 in JobQueue::QueueProcesserThread (param=0xad10be90) at
jobqueue.cpp:156
#6 0xb527bba8 in ?? () from /usr/lib/nvidia-current/libGL.so.1
Thread 16 (Thread 31974):
#0 0xb77f6424 in __kernel_vsyscall ()
#1 0xb5341884 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
from /lib/libpthread.so.0
#2 0xb435333e in ?? () from /usr/lib/libQtCore.so.4
#3 0xb43533fd in QThread::usleep(unsigned long) ()
from /usr/lib/libQtCore.so.4
#4 0xb62b9fc8 in MythSystemManager::run (this=0x9f89bb8) at
system-unix.cpp:246
#5 0xb4353df9 in ?? () from /usr/lib/libQtCore.so.4
#6 0xb527bba8 in ?? () from /usr/lib/nvidia-current/libGL.so.1
Thread 15 (Thread 31994):
#0 0xb77f6424 in __kernel_vsyscall ()
#1 0xb41450f3 in ?? () from /lib/libc.so.6
#2 0xb40d965f in ?? () from /lib/libc.so.6
Backtrace stopped: previous frame identical to this frame (corrupt
stack?)
Thread 14 (Thread 32080):
#0 0xb77f6424 in __kernel_vsyscall ()
#1 0xb5341884 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
from /lib/libpthread.so.0
#2 0xb435494f in QWaitCondition::wait(QMutex*, unsigned long) ()
from /usr/lib/libQtCore.so.4
#3 0xb705255b in ThreadedFileWriter::SyncLoop (this=0xa47d6f10) at
ThreadedFileWriter.cpp:452
#4 0xb704fdfa in TFWSyncThread::run (this=0xa47d6f68) at
ThreadedFileWriter.cpp:128
#5 0xb4353df9 in ?? () from /usr/lib/libQtCore.so.4
#6 0xb527bba8 in ?? () from /usr/lib/nvidia-current/libGL.so.1
Thread 13 (Thread 31996):
#0 0xb77f6424 in __kernel_vsyscall ()
#1 0xb41001a6 in nanosleep () from /lib/libc.so.6
#2 0xb40fffa0 in sleep () from /lib/libc.so.6
#3 0x0806309d in AutoExpire::Sleep (this=0x9fce278, sleepTime=60) at
autoexpire.cpp:330
#4 0x08062ff8 in AutoExpire::RunExpirer (this=0x9fce278) at
autoexpire.cpp:315
#5 0x08068a33 in AutoExpire::ExpirerThread (param=0x9fce278) at
autoexpire.cpp:617
#6 0xb527bba8 in ?? () from /usr/lib/nvidia-current/libGL.so.1
Thread 12 (Thread 31973):
#0 0xb77f6424 in __kernel_vsyscall ()
#1 0xb4130371 in select () from /lib/libc.so.6
#2 0xb6337f5f in SSDP::run (this=0x9f64f70) at ssdp.cpp:229
#3 0xb4353df9 in ?? () from /usr/lib/libQtCore.so.4
#4 0xb527bba8 in ?? () from /usr/lib/nvidia-current/libGL.so.1
Thread 11 (Thread 31986):
#0 0xb77f6424 in __kernel_vsyscall ()
#1 0xb41450f3 in ?? () from /lib/libc.so.6
#2 0xb40f2c9b in ?? () from /lib/libc.so.6
Backtrace stopped: previous frame identical to this frame (corrupt
stack?)
Thread 10 (Thread 31992):
#0 0xb77f6424 in __kernel_vsyscall ()
#1 0xb41450f3 in ?? () from /lib/libc.so.6
#2 0xb40f2c9b in ?? () from /lib/libc.so.6
Backtrace stopped: previous frame identical to this frame (corrupt
stack?)
Thread 9 (Thread 31998):
#0 0xb77f6424 in __kernel_vsyscall ()
#1 0xb4128df6 in poll () from /lib/libc.so.6
#2 0xb14e7a1b in g_poll () from /lib/libglib-2.0.so.0
#3 0xb14da43c in ?? () from /lib/libglib-2.0.so.0
#4 0xb14da848 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#5 0xb4484565 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#6 0xb4454609 in
QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/libQtCore.so.4
#7 0xb4454a8a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/libQtCore.so.4
#8 0xb4350b7e in QThread::exec() () from /usr/lib/libQtCore.so.4
#9 0xb4350c6d in QThread::run() () from /usr/lib/libQtCore.so.4
#10 0xb4353df9 in ?? () from /usr/lib/libQtCore.so.4
#11 0xb527bba8 in ?? () from /usr/lib/nvidia-current/libGL.so.1
Thread 8 (Thread 31971):
#0 0xb77f6424 in __kernel_vsyscall ()
#1 0xb4128df6 in poll () from /lib/libc.so.6
#2 0xb14e7a1b in g_poll () from /lib/libglib-2.0.so.0
#3 0xb14da43c in ?? () from /lib/libglib-2.0.so.0
#4 0xb14da848 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#5 0xb4484565 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#6 0xb4454609 in
QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/libQtCore.so.4
#7 0xb4454a8a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/libQtCore.so.4
#8 0xb4350b7e in QThread::exec() () from /usr/lib/libQtCore.so.4
#9 0xb634cc72 in WorkerThread::run (this=0x9f62b50) at
threadpool.cpp:267
#10 0xb4353df9 in ?? () from /usr/lib/libQtCore.so.4
#11 0xb527bba8 in ?? () from /usr/lib/nvidia-current/libGL.so.1
Thread 7 (Thread 32000):
#0 0xb77f6424 in __kernel_vsyscall ()
#1 0xb53414dc in pthread_cond_wait@@GLIBC_2.3.2 ()
from /lib/libpthread.so.0
#2 0xb43549c7 in QWaitCondition::wait(QMutex*, unsigned long) ()
from /usr/lib/libQtCore.so.4
#3 0x080d1cc9 in ProcessRequestThread::run (this=0xad11b830) at
mainserver.cpp:152
#4 0xb4353df9 in ?? () from /usr/lib/libQtCore.so.4
#5 0xb527bba8 in ?? () from /usr/lib/nvidia-current/libGL.so.1
Thread 6 (Thread 31980):
#0 0xb77f6424 in __kernel_vsyscall ()
#1 0xb53414dc in pthread_cond_wait@@GLIBC_2.3.2 ()
from /lib/libpthread.so.0
#2 0xb43549c7 in QWaitCondition::wait(QMutex*, unsigned long) ()
from /usr/lib/libQtCore.so.4
#3 0xb752510d in MpegRecorder::StopRecording (this=0xad1374a8) at
mpegrecorder.cpp:1384
#4 0xb74314e2 in TVRec::TeardownRecorder (this=0xb0411058,
killFile=true) at tv_rec.cpp:1152
#5 0xb7448fbc in TVRec::TuningShutdowns (this=0xb0411058, request=...)
at tv_rec.cpp:3680
#6 0xb7447cde in TVRec::HandleTuning (this=0xb0411058) at
tv_rec.cpp:3535
#7 0xb74329ab in TVRec::RunTV (this=0xb0411058) at tv_rec.cpp:1434
#8 0xb7431c7b in TVRecEventThread::run (this=0xb041106c) at
tv_rec.cpp:1304
#9 0xb4353df9 in ?? () from /usr/lib/libQtCore.so.4
#10 0xb527bba8 in ?? () from /usr/lib/nvidia-current/libGL.so.1
Thread 5 (Thread 31976):
#0 0xb77f6424 in __kernel_vsyscall ()
#1 0xb53414dc in pthread_cond_wait@@GLIBC_2.3.2 ()
from /lib/libpthread.so.0
#2 0xb43549c7 in QWaitCondition::wait(QMutex*, unsigned long) ()
from /usr/lib/libQtCore.so.4
#3 0xb62b9048 in MythSystemIOHandler::run (this=0x9fb6a38) at
system-unix.cpp:84
#4 0xb4353df9 in ?? () from /usr/lib/libQtCore.so.4
#5 0xb527bba8 in ?? () from /usr/lib/nvidia-current/libGL.so.1
Thread 4 (Thread 31977):
#0 0xb77f6424 in __kernel_vsyscall ()
#1 0xb53414dc in pthread_cond_wait@@GLIBC_2.3.2 ()
from /lib/libpthread.so.0
#2 0xb43549c7 in QWaitCondition::wait(QMutex*, unsigned long) ()
from /usr/lib/libQtCore.so.4
#3 0xb62b9048 in MythSystemIOHandler::run (this=0xb04185f8) at
system-unix.cpp:84
#4 0xb4353df9 in ?? () from /usr/lib/libQtCore.so.4
#5 0xb527bba8 in ?? () from /usr/lib/nvidia-current/libGL.so.1
Thread 3 (Thread 31983):
#0 0xb77f6424 in __kernel_vsyscall ()
#1 0xb5341884 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
from /lib/libpthread.so.0
#2 0xb435494f in QWaitCondition::wait(QMutex*, unsigned long) ()
from /usr/lib/libQtCore.so.4
#3 0xb74345f4 in TVRec::RunTV (this=0xb040f058) at tv_rec.cpp:1605
#4 0xb7431c7b in TVRecEventThread::run (this=0xb040f06c) at
tv_rec.cpp:1304
#5 0xb4353df9 in ?? () from /usr/lib/libQtCore.so.4
#6 0xb527bba8 in ?? () from /usr/lib/nvidia-current/libGL.so.1
Thread 2 (Thread 31966):
#0 0xb77f6424 in __kernel_vsyscall ()
#1 0xb4128df6 in poll () from /lib/libc.so.6
#2 0xb14e7a1b in g_poll () from /lib/libglib-2.0.so.0
#3 0xb14da43c in ?? () from /lib/libglib-2.0.so.0
#4 0xb14da848 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#5 0xb4484565 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#6 0xb4454609 in
QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/libQtCore.so.4
#7 0xb4454a8a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/libQtCore.so.4
#8 0xb445900f in QCoreApplication::exec() ()
from /usr/lib/libQtCore.so.4
#9 0x08150f83 in run_backend (cmdline=...) at main_helpers.cpp:786
#10 0x0808dedc in main (argc=6, argv=0xbfa19124) at main.cpp:185
Thread 1 (Thread 32103):
#0 0xb77f6424 in __kernel_vsyscall ()
#1 0xb4091941 in raise () from /lib/libc.so.6
#2 0xb4094e42 in abort () from /lib/libc.so.6
#3 0xb40c9305 in ?? () from /lib/libc.so.6
#4 0xb40d3501 in ?? () from /lib/libc.so.6
#5 0xb40d62fc in ?? () from /lib/libc.so.6
#6 0xb40d7f33 in malloc () from /lib/libc.so.6
#7 0xb527c5e0 in ?? () from /usr/lib/nvidia-current/libGL.so.1
Backtrace stopped: previous frame inner to this frame (corrupt stack?)
(gdb) quit
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