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[paul summers <paulsum@xxxxxxxxxxx>]

ignore my previous comment...

the crashes just happen... thus it is a non event... (would be nice for
it not to happen, but recording don't get cancelled, nothing important
gets stopped... so this has become "oh, well, yet another crash"...

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https://bugs.launchpad.net/bugs/1077778

Title:
  mythfrontend.real crashed with SIGSEGV in calloc()

Status in Mythbuntu, Ubuntu derivative focused upon MythTV:
  New

Bug description:
  I have been running Mythbuntu 10.04 on this same hardware for about
  two years and it was very stable.  A few weeks ago I upgraded to 12.04
  and also updated MythTV from .25 to .26.  Mythwelcome would crash on
  start about half the time, and I got a lot of crashes for the
  background processes like mythshutdown and mythpreviewgen.

  I decided to install from scratch, though I kept /home as is.  The
  crashes are less frequent now.  Mythwelcome/Mythfrotend start and
  operate normally for the most part.  I still occasionally get crash
  reports for mythshutdown and mythpreviewgen, but I can't get them to
  fail when run manually, so I've been having a hard time getting proper
  debug information with gdb.

  Given that I went from no problems to problems instantly after the
  upgrade, I don't think it is hardware failure, though it could be
  something buggy that just wasn't exposed before.  Mostly I'm just not
  sure what to look at next.  Any ideas?  What other information can I
  gather?

  This is the only really weird thing I see in the logs, but I haven't been able to figure out if/what kind of problem it is.
  [    0.373634] pnp 00:0c: [Firmware Bug]: [mem 0x00000000-0xffffffffffffffff dis
  abled] covers only part of AMD MMCONFIG area [mem 0xe0000000-0xe00fffff]; adding
   more reservations

  ProblemType: Crash
  DistroRelease: Ubuntu 12.04
  Package: mythtv-frontend 2:0.26.0+fixes.20121106.bcd34da-0ubuntu0mythbuntu2 [origin: LP-PPA-mythbuntu-0.26]
  ProcVersionSignature: Ubuntu 3.2.0-32.51-generic 3.2.30
  Uname: Linux 3.2.0-32-generic x86_64
  NonfreeKernelModules: nvidia
  .var.log.mythtv.mythavtest.log:
   
  .var.log.mythtv.mythccextractor.log:
   
  .var.log.mythtv.mythjobqueue.log:
   
  .var.log.mythtv.mythmediaserver.log:
   
  .var.log.mythtv.mythtranscode.log:
   
  .var.log.mythtv.mythutil.log:
   
  ApportVersion: 2.0.1-0ubuntu14
  Architecture: amd64
  CrashDB: mythbuntu
  Date: Sun Nov 11 18:54:32 2012
  ExecutablePath: /usr/bin/mythfrontend.real
  InstallationMedia: Mythbuntu 12.04.1 "Precise Pangolin" - Release amd64 (20120818.1)
  Installed_mythtv_dbg: 0.0
  ProcCmdline: /usr/bin/mythfrontend.real --syslog local7
  ProcEnviron:
   PATH=(custom, user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SegvAnalysis:
   Segfault happened at: 0x7fdf26001e08:	mov    0x8(%r12),%r15
   PC (0x7fdf26001e08) ok
   source "0x8(%r12)" (0x4000000002463be9) not located in a known VMA region (needed readable region)!
   destination "%r15" ok
  SegvReason: reading unknown VMA
  Signal: 11
  SourcePackage: mythtv
  StacktraceTop:
   ?? () from /lib/x86_64-linux-gnu/libc.so.6
   ?? () from /lib/x86_64-linux-gnu/libc.so.6
   calloc () from /lib/x86_64-linux-gnu/libc.so.6
   ?? () from /usr/lib/nvidia-current-updates/libGL.so.1
   ?? () from /usr/lib/nvidia-current-updates/libGL.so.1
  Title: mythfrontend.real crashed with SIGSEGV in calloc()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin mythtv plugdev sambashare sudo video
  mtime.conffile..etc.mythtv.session.settings: 2012-11-02T19:52:49.635714

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