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[wam <flaurent@xxxxxxx>]

Seeing with last official distro/version:

Linux 3.2.0-37-generic #58-Ubuntu SMP Thu Jan 24 15:28:10 UTC 2013
x86_64 x86_64 x86_64 GNU/Linux

MythTV Version : v0.26.0-93-ga1b9b1f
MythTV Branch : fixes/0.26
Network Protocol : 75
Library API : 0.26.20130112-1
QT Version : 4.8.1
Options compiled in:
 linux profile use_hidesyms using_alsa using_oss using_pulse using_pulseoutput using_backend using_bindings_perl using_bindings_python using_bindings_php using_crystalhd using_dvb using_firewire using_frontend using_hdhomerun using_ceton using_hdpvr using_iptv using_ivtv using_joystick_menu using_libcec using_libcrypto using_libdns_sd using_libxml2 using_lirc using_mheg using_opengl_video using_qtwebkit using_qtscript using_qtdbus using_v4l2 using_x11 using_xrandr using_xv using_bindings_perl using_bindings_python using_bindings_php using_mythtranscode using_opengl using_vaapi using_vdpau using_ffmpeg_threads using_live using_mheg using_libass using_libxml2

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https://bugs.launchpad.net/bugs/846417

Title:
  mythcommflag crashed with SIGSEGV in mpeg2_fast_decode_block_intra()

Status in Mythbuntu, Ubuntu derivative focused upon MythTV:
  New

Bug description:
  mythcommflag crashed while flagging an recording in progress.

  ProblemType: Crash
  DistroRelease: Ubuntu 11.04
  Package: mythtv-backend 2:0.25.0~master.20110910.bc9837f-0ubuntu0mythbuntu2
  ProcVersionSignature: Ubuntu 2.6.38-10.46-generic 2.6.38.7
  Uname: Linux 2.6.38-10-generic x86_64
  NonfreeKernelModules: nvidia
  Architecture: amd64
  CrashDB: mythbuntu
  Date: Sat Sep 10 14:00:56 2011
  ExecutablePath: /usr/bin/mythcommflag
  InstallationMedia: Mythbuntu 11.04 "Natty Narwhal" - Release amd64 (20110426)
  Installed_mythtv_dbg: 2:0.25.0~master.20110910.bc9837f-0ubuntu0mythbuntu2
  ProcCmdline: /usr/bin/mythcommflag -j 784 --noprogress --verbose general --loglevel info --syslog local7
  ProcEnviron:
   PATH=(custom, no user)
   LANG=de_DE.UTF-8
  SegvAnalysis:
   Segfault happened at: 0x7f739bb0448a <mpeg_decode_slice+8762>:	movzbl (%rdi),%ecx
   PC (0x7f739bb0448a) ok
   source "(%rdi)" (0x7f73842e8018) in non-readable VMA region: 0x7f73842e8000-0x7f7388000000 ---p None
   destination "%ecx" ok
   Stack memory exhausted (SP below stack segment)
  SegvReason: reading VMA None
  Signal: 11
  SourcePackage: mythtv
  StacktraceTop:
   mpeg2_fast_decode_block_intra (s1=0x7f738413f5a0, mb_y=<value optimized out>, buf=0x7f7383bf0ea0, buf_size=<value optimized out>) at libavcodec/mpeg12.c:1112
   mpeg_decode_mb (s1=0x7f738413f5a0, mb_y=<value optimized out>, buf=0x7f7383bf0ea0, buf_size=<value optimized out>) at libavcodec/mpeg12.c:319
   mpeg_decode_slice (s1=0x7f738413f5a0, mb_y=<value optimized out>, buf=0x7f7383bf0ea0, buf_size=<value optimized out>) at libavcodec/mpeg12.c:1729
   decode_chunks (avctx=<value optimized out>, picture=0x7f7383bf1110, data_size=0x7f7383bf10c0, buf=0x7f73780e9d80 "", buf_size=106700) at libavcodec/mpeg12.c:2628
   mpeg_decode_frame (avctx=0x7f73840b1660, data=0x7f7383bf1110, data_size=0x7f7383bf10c0, avpkt=<value optimized out>) at libavcodec/mpeg12.c:2430
  Title: mythcommflag crashed with SIGSEGV in mpeg2_fast_decode_block_intra()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: audio cdrom dialout video
  XsessionErrors:
   (xfwm4:1811): xfwm4-WARNING **: The display does not support the XComposite extension.
   (xfwm4:1811): xfwm4-WARNING **: Compositing manager disabled.
   (nm-applet:1829): libappindicator-WARNING **: Unable to send signal for NewStatus: The connection is closed

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