[mythtv] Backend faults

jgmtfia Mr jgmtfia at gmail.com
Fri Nov 25 22:55:35 EST 2005


I have been getting a lot of backend crashes lately, so I have compiled a
debug version of mythtv, and ran the backend from gdb.  What should I report
when a crash happens?  (I typically get a lot of libc corrupt linked list
crashes, but this time it was a broken pipe)  I want the information I am
gathering to be useful, so any pointers would be appreciated.

The following is a backtrace of a crash this evening.  What should I do from
here?

Version:
0.19.20051119-1
Options compiled in:
 linux debug using_v4l using_alsa using_ivtv using_lirc using_x11 using_xv
using_xrandr using_frontend using_backend

Command line:
run --logfile /var/log/mythtv/mythbackend.log --pidfile
/var/run/mythtv/mythbackend.pid --verbose all

Gdb output:
[Thread -1328550992 (LWP 10626) exited]

Program received signal SIGPIPE, Broken pipe.
[Switching to Thread -1238829376 (LWP 6114)]
0xb6646381 in __write_nocancel () from /lib/tls/libpthread.so.0
(gdb)
(gdb)
(gdb)
(gdb)
(gdb) bt
#0  0xb6646381 in __write_nocancel () from /lib/tls/libpthread.so.0
#1  0xb6c5f19b in QSocketDevice::writeBlock () from /usr/lib/libqt-mt.so.3
#2  0xb6c5b056 in QSocket::flush () from /usr/lib/libqt-mt.so.3
#3  0xb7241421 in WriteStringList (socket=0x8384d40, list=@0xbfe17050) at
util.cpp:475
#4  0x0808cdd0 in MainServer::customEvent (this=0x81a2eb8, e=0x83c3d18) at
mainserver.cpp:739
#5  0xb6a2adc3 in QObject::event () from /usr/lib/libqt-mt.so.3
#6  0xb69c3778 in QApplication::internalNotify () from /usr/lib/libqt-
mt.so.3
#7  0xb69c3996 in QApplication::notify () from /usr/lib/libqt-mt.so.3
#8  0xb71ee3cb in QApplication::sendEvent (receiver=0x81a2eb8,
event=0x83c3d18) at qapplication.h:496
#9  0xb69c4dac in QApplication::sendPostedEvents () from /usr/lib/libqt-
mt.so.3
#10 0xb69c4ed9 in QApplication::sendPostedEvents () from /usr/lib/libqt-
mt.so.3
#11 0xb69669d4 in QEventLoop::processEvents () from /usr/lib/libqt-mt.so.3
#12 0xb69dbea2 in QEventLoop::enterLoop () from /usr/lib/libqt-mt.so.3
#13 0xb69dbdcb in QEventLoop::exec () from /usr/lib/libqt-mt.so.3
#14 0xb69c2305 in QApplication::exec () from /usr/lib/libqt-mt.so.3
#15 0x08075c58 in main (argc=7, argv=0xbfe17bb4) at main.cpp:660
(gdb) c
Continuing.
[Thread -1336939600 (LWP 10613) exited]
[New Thread -1336939600 (LWP 12134)]
[Thread -1346380880 (LWP 10612) exited]
[Thread -1356870736 (LWP 10611) exited]
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