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[Grayson Peddie <607023@xxxxxxxxxxxxxxxxxx>]

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(Happened While Watching Recorded TV Show)mythfrontend.real crashed with SIGSEGV in AvFormatDecoder::GetFrame()
https://bugs.launchpad.net/bugs/607023
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Status in “mythtv” package in Ubuntu: New

Bug description:
Binary package hint: mythtv

When I watch Cops that I have recorded last night, about halfway through the show when a commercial is showing, MythTV segfaults. I repeated it like about 5 times already and I'm trying to get around a bad frame.

I could attribute this to losing signal since I have my antenna connected to my ATSC TV tuner.

This is very similar to that of Bug #74299 but since this bug report is 3 years old, I may have to just submit a duplicate just in case.

grayson@htpc:~$ lsb_release -rd
Description:	Ubuntu 10.04.1 LTS
Release:	10.04

grayson@htpc:~$ apt-cache policy mythtv-frontend
mythtv-frontend:
  Installed: 0.23.0+fixes24158-0ubuntu2
  Candidate: 0.23.0+fixes24158-0ubuntu2
  Version table:
 *** 0.23.0+fixes24158-0ubuntu2 0
        500 http://us.archive.ubuntu.com/ubuntu/ lucid/multiverse Packages
        100 /var/lib/dpkg/status

If the frontend are to get a bad frame, it could ignore the frame, skip to the next frame, and if it encounters a bad frame again, repeat the skipping until the frontend finds a next good frame and continue playback.

ProblemType: Crash
DistroRelease: Ubuntu 10.04
Package: mythtv-frontend 0.23.0+fixes24158-0ubuntu2
ProcVersionSignature: Ubuntu 2.6.32-23.37-generic 2.6.32.15+drm33.5
Uname: Linux 2.6.32-23-generic x86_64
NonfreeKernelModules: fglrx
Architecture: amd64
CrashCounter: 1
Date: Sun Jul 18 19:25:27 2010
ExecutablePath: /usr/bin/mythfrontend.real
Installed_mythplugins-dbg: 0.0
Installed_mythtv-dbg: 0.0
MythTVDirectoryPermissions: Error: command ['ls', '-l', '/var/lib/mythtv'] failed with exit code 2: ls: cannot access /var/lib/mythtv: No such file or directory
ProcCmdline: /usr/bin/mythfrontend.real
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.utf8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7f5944345d67 <_ZN15AvFormatDecoder8GetFrameE11DecodeTypes+30531>: mov    %edx,0x5c(%rax)
 PC (0x7f5944345d67) ok
 source "%edx" ok
 destination "0x5c(%rax)" (0x0000005c) not located in a known VMA region (needed writable region)!
SegvReason: writing NULL VMA
Signal: 11
SourcePackage: mythtv
StacktraceTop:
 AvFormatDecoder::GetFrame(DecodeTypes) ()
 NuppelVideoPlayer::GetFrameNormal(DecodeTypes) ()
 NuppelVideoPlayer::GetFrame(DecodeTypes, bool) ()
 NuppelVideoPlayer::StartPlaying(bool) ()
 ?? () from /usr/lib/libmythtv-0.23.so.0
Title: mythfrontend.real crashed with SIGSEGV in AvFormatDecoder::GetFrame()
UserGroups: adm admin audio cdrom dialout lpadmin mythtv plugdev sambashare video
XsessionErrors:
 (polkit-gnome-authentication-agent-1:1702): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed
 (gnome-terminal:2094): Gtk-CRITICAL **: gtk_accel_map_unlock_path: assertion `entry != NULL && entry->lock_count > 0' failed