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[Bug 1041797] Re: mythpreviewgen crashed with SIGSEGV in mpegts_push_section() - backend

To: mythbuntu-bugs@xxxxxxxxxxxxxxxxxxx
From: Bug Watch Updater <1041797@xxxxxxxxxxxxxxxxxx>
Date: Sun, 26 Aug 2012 13:02:59 -0000
Reply-to: Bug 1041797 <1041797@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

** Changed in: mythtv
       Status: Unknown => New

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https://bugs.launchpad.net/bugs/1041797

Title:
  mythpreviewgen crashed with SIGSEGV in mpegts_push_section() - backend

Status in Mythbuntu, Ubuntu derivative focused upon MythTV:
  New
Status in MythTV:
  New

Bug description:
  This is the backend crashing when a remote frontend starts playback

  ProblemType: Crash
  DistroRelease: Ubuntu 12.04
  Package: mythtv-backend 2:0.26.0~master.20120823.6566c3c-0ubuntu0mythbuntu2 [origin: LP-PPA-mythbuntu-0.26]
  ProcVersionSignature: Ubuntu 3.2.0-29.46-generic 3.2.24
  Uname: Linux 3.2.0-29-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.0.1-0ubuntu12
  Architecture: amd64
  CrashCounter: 1
  CrashDB: mythbuntu
  Date: Sun Aug 26 09:43:15 2012
  ExecutablePath: /usr/bin/mythpreviewgen
  InstallationMedia: Mythbuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
  Installed_mythtv_dbg: 2:0.26.0~master.20120823.6566c3c-0ubuntu0mythbuntu2
  ProcCmdline: /usr/bin/mythpreviewgen --size 0x0 --chanid 1080 --starttime 20120812102800 --verbose general --loglevel info --syslog local7 --quiet
  ProcEnviron:
   TERM=linux
   PATH=(custom, no user)
   LANG=en_GB.UTF-8
  SegvAnalysis:
   Segfault happened at: 0x7fb52d74ea57 <mpegts_push_section+103>:	movzbl 0x1(%rdi),%eax
   PC (0x7fb52d74ea57) ok
   source "0x1(%rdi)" (0x7fb52cf28000) in non-readable VMA region: 0x7fb52cf28000-0x7fb52d128000 ---p /usr/lib/libmythavcodec.so.54.23.100
   destination "%eax" ok
  SegvReason: reading VMA /usr/lib/libmythavcodec.so.54.23.100
  Signal: 11
  SourcePackage: mythtv
  StacktraceTop:
   mpegts_push_section (filter=<optimized out>, section=0xa6e020 ";\260\211", section_len=140) at libavformat/mpegts-mythtv.c:689
   write_section_data (s=0x91cca0, tss1=0xa6dfa0, buf=<optimized out>, buf_size=<optimized out>, is_start=<optimized out>) at libavformat/mpegts-mythtv.c:401
   handle_packet (ts=0xa29800, packet=0x7fffea774b10 "G\\$\025}P\377") at libavformat/mpegts-mythtv.c:2527
   handle_packets (ts=0xa29800, nb_packets=0) at libavformat/mpegts-mythtv.c:2643
   mpegts_read_packet (s=<optimized out>, pkt=0x7fffea774ce0) at libavformat/mpegts-mythtv.c:2951
  Title: mythpreviewgen crashed with SIGSEGV in mpegts_push_section()
  UpgradeStatus: Upgraded to precise on 2012-04-15 (132 days ago)
  UserGroups: audio cdrom dialout video

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