[mythtv] mythfrontend segfault (error 6 in libQtCore.so.4.4.3)

Thu Feb 12 03:00:03 UTC 2009

Exit playblack of hdpvr recording, with VDPAU resulted in mythfrontend
segfault
mythbackend version: trunk [19825M] www.mythtv.org

I tried running mythfronted in gdb for 4 or 5 days and this did not occur. I
managed to generate a core. Here is the output, I included the list of
libraries in case there is something relevant there.

This GDB was configured as "x86_64-linux-gnu"...
(gdb) core core.6855
warning: Can't read pathname for load map: Input/output error.
Reading symbols from /usr/lib/libmythtv-0.22.so.0...done.
Loaded symbols for /usr/lib/libmythtv-0.22.so.0
Reading symbols from /usr/lib/libmythavformat-0.22.so.0...done.
Loaded symbols for /usr/lib/libmythavformat-0.22.so.0
Reading symbols from /usr/lib/libmythavutil-0.22.so.0...done.
Loaded symbols for /usr/lib/libmythavutil-0.22.so.0
Reading symbols from /usr/lib/libmythavcodec-0.22.so.0...done.
Loaded symbols for /usr/lib/libmythavcodec-0.22.so.0
Reading symbols from /usr/lib/libmythupnp-0.22.so.0...done.
Loaded symbols for /usr/lib/libmythupnp-0.22.so.0
Reading symbols from /usr/lib/libmyth-0.22.so.0...done.
Loaded symbols for /usr/lib/libmyth-0.22.so.0
Reading symbols from /usr/lib/libmythui-0.22.so.0...done.
Loaded symbols for /usr/lib/libmythui-0.22.so.0
Reading symbols from /usr/lib/libmythdb-0.22.so.0...done.
Loaded symbols for /usr/lib/libmythdb-0.22.so.0
Reading symbols from /usr/lib/libmythlivemedia-0.22.so.0...done.
Loaded symbols for /usr/lib/libmythlivemedia-0.22.so.0
Reading symbols from /usr/lib/libmythfreemheg-0.22.so.0...done.
Loaded symbols for /usr/lib/libmythfreemheg-0.22.so.0
Reading symbols from /usr/lib/libfreetype.so.6...done.
Loaded symbols for /usr/lib/libfreetype.so.6
Reading symbols from /usr/lib/libz.so.1...done.
Loaded symbols for /usr/lib/libz.so.1
Reading symbols from /usr/lib/libXinerama.so.1...done.
Loaded symbols for /usr/lib/libXinerama.so.1
Reading symbols from /usr/lib/libXv.so.1...done.
Loaded symbols for /usr/lib/libXv.so.1
Reading symbols from /usr/lib/libX11.so.6...done.
Loaded symbols for /usr/lib/libX11.so.6
Reading symbols from /usr/lib/libXext.so.6...done.
Loaded symbols for /usr/lib/libXext.so.6
Reading symbols from /usr/lib/libXxf86vm.so.1...done.
Loaded symbols for /usr/lib/libXxf86vm.so.1
Reading symbols from /usr/lib/libXrandr.so.2...done.
Loaded symbols for /usr/lib/libXrandr.so.2
Reading symbols from /lib/libpthread.so.0...done.
Loaded symbols for /lib/libpthread.so.0
Reading symbols from /usr/lib/libGLU.so.1...done.
Loaded symbols for /usr/lib/libGLU.so.1
Reading symbols from /usr/lib/libGL.so.1...done.
Loaded symbols for /usr/lib/libGL.so.1
Reading symbols from /usr/lib/libQtSql.so.4...done.
Loaded symbols for /usr/lib/libQtSql.so.4
Reading symbols from /usr/lib/libQtXml.so.4...done.
Loaded symbols for /usr/lib/libQtXml.so.4
Reading symbols from /usr/lib/libQtOpenGL.so.4...done.
Loaded symbols for /usr/lib/libQtOpenGL.so.4
Reading symbols from /usr/lib/libQtGui.so.4...done.
Loaded symbols for /usr/lib/libQtGui.so.4
Reading symbols from /usr/lib/libQtNetwork.so.4...done.
Loaded symbols for /usr/lib/libQtNetwork.so.4
Reading symbols from /usr/lib/libQtCore.so.4...done.
Loaded symbols for /usr/lib/libQtCore.so.4
Reading symbols from /usr/lib/libstdc++.so.6...done.
Loaded symbols for /usr/lib/libstdc++.so.6
Reading symbols from /lib/libm.so.6...done.
Loaded symbols for /lib/libm.so.6
Reading symbols from /lib/libgcc_s.so.1...done.
Loaded symbols for /lib/libgcc_s.so.1
Reading symbols from /lib/libc.so.6...done.
Loaded symbols for /lib/libc.so.6
Reading symbols from /usr/lib/libmp3lame.so.0...done.
Loaded symbols for /usr/lib/libmp3lame.so.0
Reading symbols from /lib/libdl.so.2...done.
Loaded symbols for /lib/libdl.so.2
Reading symbols from /usr/lib/libvdpau.so.1...done.
Loaded symbols for /usr/lib/libvdpau.so.1
Reading symbols from /usr/lib/libasound.so.2...done.
Loaded symbols for /usr/lib/libasound.so.2
Reading symbols from /usr/lib/libartsc.so.0...done.
Loaded symbols for /usr/lib/libartsc.so.0
Reading symbols from /usr/lib/libQtWebKit.so.4...done.
Loaded symbols for /usr/lib/libQtWebKit.so.4
Reading symbols from /usr/lib/libxcb-xlib.so.0...done.
Loaded symbols for /usr/lib/libxcb-xlib.so.0
Reading symbols from /usr/lib/libxcb.so.1...done.
Loaded symbols for /usr/lib/libxcb.so.1
Reading symbols from /usr/lib/libXau.so.6...done.
Loaded symbols for /usr/lib/libXau.so.6
Reading symbols from /usr/lib/libXrender.so.1...done.
Loaded symbols for /usr/lib/libXrender.so.1
Reading symbols from /lib/ld-linux-x86-64.so.2...done.
Loaded symbols for /lib64/ld-linux-x86-64.so.2
Reading symbols from /usr/lib/libGLcore.so.1...done.
Loaded symbols for /usr/lib/libGLcore.so.1
Reading symbols from /usr/lib/tls/libnvidia-tls.so.1...done.
Loaded symbols for /usr/lib/tls/libnvidia-tls.so.1
Reading symbols from /usr/lib/libaudio.so.2...done.
Loaded symbols for /usr/lib/libaudio.so.2
Reading symbols from /usr/lib/libpng12.so.0...done.
Loaded symbols for /usr/lib/libpng12.so.0
Reading symbols from /usr/lib/libSM.so.6...done.
Loaded symbols for /usr/lib/libSM.so.6
Reading symbols from /usr/lib/libICE.so.6...done.
Loaded symbols for /usr/lib/libICE.so.6
Reading symbols from /usr/lib/libglib-2.0.so.0...done.
Loaded symbols for /usr/lib/libglib-2.0.so.0
Reading symbols from /usr/lib/libXi.so.6...done.
Loaded symbols for /usr/lib/libXi.so.6
Reading symbols from /usr/lib/libfontconfig.so.1...done.
Loaded symbols for /usr/lib/libfontconfig.so.1
Reading symbols from /usr/lib/libgthread-2.0.so.0...done.
Loaded symbols for /usr/lib/libgthread-2.0.so.0
Reading symbols from /lib/librt.so.1...done.
Loaded symbols for /lib/librt.so.1
Reading symbols from /usr/lib/libsqlite3.so.0...done.
Loaded symbols for /usr/lib/libsqlite3.so.0
Reading symbols from /usr/lib/libXdmcp.so.6...done.
Loaded symbols for /usr/lib/libXdmcp.so.6
Reading symbols from /usr/lib/libXt.so.6...done.
Loaded symbols for /usr/lib/libXt.so.6
Reading symbols from /lib/libpcre.so.3...done.
Loaded symbols for /lib/libpcre.so.3
Reading symbols from /usr/lib/libexpat.so.1...done.
Loaded symbols for /usr/lib/libexpat.so.1
Reading symbols from /usr/lib/gconv/UTF-16.so...done.
Loaded symbols for /usr/lib/gconv/UTF-16.so
Reading symbols from /usr/lib/qt4/plugins/codecs/libqcncodecs.so...done.
Loaded symbols for /usr/lib/qt4/plugins/codecs/libqcncodecs.so
Reading symbols from /usr/lib/qt4/plugins/codecs/libqjpcodecs.so...done.
Loaded symbols for /usr/lib/qt4/plugins/codecs/libqjpcodecs.so
Reading symbols from /usr/lib/qt4/plugins/codecs/libqkrcodecs.so...done.
Loaded symbols for /usr/lib/qt4/plugins/codecs/libqkrcodecs.so
Reading symbols from /usr/lib/qt4/plugins/codecs/libqtwcodecs.so...done.
Loaded symbols for /usr/lib/qt4/plugins/codecs/libqtwcodecs.so
Reading symbols from /usr/lib/libXfixes.so.3...done.
Loaded symbols for /usr/lib/libXfixes.so.3
Reading symbols from /usr/lib/libXcursor.so.1...done.
Loaded symbols for /usr/lib/libXcursor.so.1
Reading symbols from /usr/lib/qt4/plugins/sqldrivers/libqsqlite.so...done.
Loaded symbols for /usr/lib/qt4/plugins/sqldrivers/libqsqlite.so
Reading symbols from /usr/lib/qt4/plugins/sqldrivers/libqsqlmysql.so...done.
Loaded symbols for /usr/lib/qt4/plugins/sqldrivers/libqsqlmysql.so
Reading symbols from /usr/lib/libmysqlclient_r.so.15...done.
Loaded symbols for /usr/lib/libmysqlclient_r.so.15
Reading symbols from /lib/libcrypt.so.1...done.
Loaded symbols for /lib/libcrypt.so.1
Reading symbols from /lib/libnsl.so.1...done.
Loaded symbols for /lib/libnsl.so.1
Reading symbols from /lib/libnss_files.so.2...done.
Loaded symbols for /lib/libnss_files.so.2
Reading symbols from /usr/lib/qt4/plugins/imageformats/libqgif.so...done.
Loaded symbols for /usr/lib/qt4/plugins/imageformats/libqgif.so
Reading symbols from /usr/lib/qt4/plugins/imageformats/libqico.so...done.
Loaded symbols for /usr/lib/qt4/plugins/imageformats/libqico.so
Reading symbols from /usr/lib/qt4/plugins/imageformats/libqjpeg.so...done.
Loaded symbols for /usr/lib/qt4/plugins/imageformats/libqjpeg.so
Reading symbols from /usr/lib/libjpeg.so.62...done.
Loaded symbols for /usr/lib/libjpeg.so.62
Reading symbols from /usr/lib/qt4/plugins/imageformats/libqmng.so...done.
Loaded symbols for /usr/lib/qt4/plugins/imageformats/libqmng.so
Reading symbols from /usr/lib/libmng.so.1...done.
Loaded symbols for /usr/lib/libmng.so.1
Reading symbols from /usr/lib/liblcms.so.1...done.
Loaded symbols for /usr/lib/liblcms.so.1
Reading symbols from /usr/lib/qt4/plugins/imageformats/libqsvg.so...done.
Loaded symbols for /usr/lib/qt4/plugins/imageformats/libqsvg.so
Reading symbols from /usr/lib/libQtSvg.so.4...done.
Loaded symbols for /usr/lib/libQtSvg.so.4
Reading symbols from /usr/lib/qt4/plugins/imageformats/libqtiff.so...done.
Loaded symbols for /usr/lib/qt4/plugins/imageformats/libqtiff.so
Reading symbols from /usr/lib/libtiff.so.4...done.
Loaded symbols for /usr/lib/libtiff.so.4
Reading symbols from /usr/lib/mythtv/plugins/libmytharchive.so...done.
Loaded symbols for /usr/lib/mythtv/plugins/libmytharchive.so
Reading symbols from /usr/lib/mythtv/plugins/libmythgallery.so...done.
Loaded symbols for /usr/lib/mythtv/plugins/libmythgallery.so
Reading symbols from /usr/lib/libexif.so.12...done.
Loaded symbols for /usr/lib/libexif.so.12
Reading symbols from /usr/lib/mythtv/plugins/libmythmovies.so...done.
Loaded symbols for /usr/lib/mythtv/plugins/libmythmovies.so
Reading symbols from /usr/lib/mythtv/plugins/libmythmusic.so...done.
Loaded symbols for /usr/lib/mythtv/plugins/libmythmusic.so
Reading symbols from /usr/lib/libvisual-0.4.so.0...done.
Loaded symbols for /usr/lib/libvisual-0.4.so.0
Reading symbols from /usr/lib/libfftw3.so.3...done.
Loaded symbols for /usr/lib/libfftw3.so.3
Reading symbols from /usr/lib/libSDL-1.2.so.0...done.
Loaded symbols for /usr/lib/libSDL-1.2.so.0
Reading symbols from /usr/lib/libfaad.so.0...done.
Loaded symbols for /usr/lib/libfaad.so.0
Reading symbols from /usr/lib/libtag.so.1...done.
Loaded symbols for /usr/lib/libtag.so.1
Reading symbols from /usr/lib/libogg.so.0...done.
Loaded symbols for /usr/lib/libogg.so.0
Reading symbols from /usr/lib/libvorbisfile.so.3...done.
Loaded symbols for /usr/lib/libvorbisfile.so.3
Reading symbols from /usr/lib/libvorbis.so.0...done.
Loaded symbols for /usr/lib/libvorbis.so.0
Reading symbols from /usr/lib/libvorbisenc.so.2...done.
Loaded symbols for /usr/lib/libvorbisenc.so.2
Reading symbols from /usr/lib/libFLAC.so.8...done.
Loaded symbols for /usr/lib/libFLAC.so.8
Reading symbols from /usr/lib/libcdaudio.so.1...done.
Loaded symbols for /usr/lib/libcdaudio.so.1
Reading symbols from /usr/lib/libcdda_paranoia.so.0...done.
Loaded symbols for /usr/lib/libcdda_paranoia.so.0
Reading symbols from /usr/lib/libcdda_interface.so.0...done.
Loaded symbols for /usr/lib/libcdda_interface.so.0
Reading symbols from /usr/lib/libQt3Support.so.4...done.
Loaded symbols for /usr/lib/libQt3Support.so.4
Reading symbols from /usr/lib/libdirectfb-1.0.so.0...done.
Loaded symbols for /usr/lib/libdirectfb-1.0.so.0
Reading symbols from /usr/lib/libfusion-1.0.so.0...done.
Loaded symbols for /usr/lib/libfusion-1.0.so.0
Reading symbols from /usr/lib/libdirect-1.0.so.0...done.
Loaded symbols for /usr/lib/libdirect-1.0.so.0
Reading symbols from /usr/lib/mythtv/plugins/libmythvideo.so...done.
Loaded symbols for /usr/lib/mythtv/plugins/libmythvideo.so
Reading symbols from /usr/lib/libvdpau_nvidia.so...done.
Loaded symbols for /usr/lib/libvdpau_nvidia.so
Core was generated by `/usr/bin/mythfrontend -l
/var/log/mythtv/mythfrontend.log'.
Program terminated with signal 11, Segmentation fault.
[New process 6855]
[New process 6947]
[New process 6863]
[New process 24322]
[New process 6857]
[New process 6864]
[New process 6858]
[New process 6856]
[New process 6946]
#0  0x00007fcebaad117d in QObjectPrivate::resetCurrentSender () from
/usr/lib/libQtCore.so.4

dmesg:
000041463730 error 4 in libQtCore.so.4.4.3[7f980a067000+230000]
[83522.489859] r8169: eth0: link down
[83528.919634] r8169: eth0: link up
[91007.093635] mythfrontend[6855]: segfault at 46b0e93c ip 00007fcebaad117d
sp 00007fffc8ee4bd8 error 6 in libQtCore.so.4.4.3[7fceba96f000+230000]

I often see Preview event entries in the logs when I get front end crashes
or long pauses:

Preview: Grabbed preview
'/var/lib/mythtv/recordings/1517_20090210210100.mpg' 1280x720 at 75s
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