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#1 2011-11-11 01:28:35

duffrecords
Member
Registered: 2011-11-10
Posts: 3

MythTV segmentation fault

I just installed Arch Linux on a system that used to run Ubuntu 10.04.  Each time I start mythbackend it crashes after a minute or so because of a segmentation fault:

Nov  9 23:44:30 localhost kernel: [  306.685494] mythbackend[1374]: segfault at 50 ip b5874455 sp bff0ac00 error 4 in libQtCore.so.4.7.4[b5818000+28c000]
Nov  9 23:45:49 localhost kernel: [  385.344658] mythbackend[1919]: segfault at 50 ip b58e7455 sp bfbae240 error 4 in libQtCore.so.4.7.4[b588b000+28c000]

I want to rule out hardware problems because mythbackend didn't cause any segfaults in this machine when it ran Ubuntu.  I ran Memtest86+ as a precaution--no errors after two full passes.  I tried reinstalling MythTV, dropping the mythconverg database, and running mythtv-setup again to rule out a corrupted installation.  The segfaults still occur.  Is anybody else having similar issues?

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#2 2011-12-03 13:51:22

matj
Member
Registered: 2011-12-03
Posts: 1

Re: MythTV segmentation fault

I get the same thing.  x86 (32 bit) system with everything up to date, and just the videos plugin installed.  The call stack (or what there is of it) looks like:

#0  0xb6150455 in QMutex::unlock() () from /usr/lib/libQtCore.so.4
#1  0xb7475d3a in MythSocket::Unlock(bool) const ()
   from /usr/lib/libmythdb-0.24.so.0
#2  0x080b06c0 in ?? ()
#3  0x08155588 in ?? ()
#4  0xb6255eed in QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib/libQtCore.so.4
#5  0xb6264dda in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#6  0xb62b3b25 in QTimer::timeout() () from /usr/lib/libQtCore.so.4
#7  0xb626c5f6 in QTimer::timerEvent(QTimerEvent*) ()
   from /usr/lib/libQtCore.so.4
#8  0xb6267d04 in QObject::event(QEvent*) () from /usr/lib/libQtCore.so.4
#9  0xb624fd79 in QCoreApplicationPrivate::notify_helper(QObject*, QEvent*) ()
   from /usr/lib/libQtCore.so.4
#10 0xb624fdf8 in QCoreApplication::notify(QObject*, QEvent*) ()
   from /usr/lib/libQtCore.so.4
#11 0xb624fb2e in QCoreApplication::notifyInternal(QObject*, QEvent*) ()
   from /usr/lib/libQtCore.so.4
#12 0xb627ff70 in ?? () from /usr/lib/libQtCore.so.4
#13 0xb627d492 in ?? () from /usr/lib/libQtCore.so.4
#14 0xb49c701f in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#15 0xb49c7750 in ?? () from /usr/lib/libglib-2.0.so.0
#16 0xb49c79ea in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#17 0xb627de4a in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#18 0xb624eb6d in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#19 0xb624edb1 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
   from /usr/lib/libQtCore.so.4
#20 0xb625350d in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#21 0x081548c0 in ?? ()
#22 0x080583e2 in ?? ()
#23 0xb5e5b243 in __libc_start_main () from /lib/libc.so.6

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