[mythtv-users] Please help! My mythbackend started to crash sporadically

Andrew Junev a-j at a-j.ru
Tue Jul 1 14:38:23 UTC 2008

Hi All,

At least it seem to me to be sporadic...
In fact, my mythtv system used to work quite well over the past
months. But after the last update my backend started to crash from
time to time. It may work just fine for several days and then crash
twice during a few hours - witout a visible reason.

Strange thing is that the mythbackend.log often does not contain any
mention of a crash - like nothing happened! But sometimes after a
crash I can see some evidence like this:

*** glibc detected *** mythbackend: malloc(): memory corruption (fast): 0x08dec407 ***
======= Backtrace: =========
======= Memory map: ========

But I don't really know what it means and I don't know how to deal
with that. My system is:

# uname -a
Linux mythbackend #1 SMP Fri Jun 13 16:38:52 EDT 2008 i686 i686 i386 GNU/Linux
# mythbackend --version
Please include all output in bug reports.
MythTV Version   : 17453M
MythTV Branch    : branches/release-0-21-fixes
Library API      : 0.21.20080304-1
Network Protocol : 40
Options compiled in:
 linux release using_oss using_alsa using_arts using_jack using_backend using_dbox2 using_dvb using_firewire using_frontend using_hdhomerun using_iptv using_ivtv using_joystick_menu using_libfftw3 using_lirc using_opengl_vsync using_opengl_video using_v4l using_x11 using_xrandr using_xv using_xvmc using_xvmcw using_xvmc_vld using_glx_proc_addr_arb using_bindings_perl using_bindings_python using_opengl using_ffmpeg_threads using_libavc_5_3 using_live

I have two DVB-S cards installed (TT S-1401). These are the only
tuners I have.

I kindly ask you for your support, any hints are really appreciated!

Best regards,

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