mythbuntu-bugs team mailing list archive

[Jay Merrifield <fracmak@xxxxxxxxx>]

Public bug reported:

The crash started happening this week when I upgraded to the latest
security updates for Ubuntu 12.04.1 LTS and the 12/06 0.26-fixes update.
At first, it only happened when recordings were starting, but now I
can't start the backend at all.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: mythtv-backend 2:0.26.0+fixes.20121206.09ac5b2-0ubuntu0mythbuntu2 [origin: LP-PPA-mythbuntu-0.26]
ProcVersionSignature: Ubuntu 3.2.0-34.53-generic 3.2.33
Uname: Linux 3.2.0-34-generic x86_64
NonfreeKernelModules: nvidia
.var.log.mythtv.ffmpeg2pass.0.log:
 
.var.log.mythtv.mythavtest.log:
 
.var.log.mythtv.mythccextractor.log:
 
.var.log.mythtv.mythjobqueue.log:
 
.var.log.mythtv.mythmediaserver.log:
 
.var.log.mythtv.mythshutdown.log:
 
.var.log.mythtv.mythutil.log:
 
.var.log.mythtv.mythwelcome.log:
 
ApportVersion: 2.0.1-0ubuntu15
Architecture: amd64
CrashDB: mythbuntu
Date: Fri Dec  7 22:34:22 2012
ExecutablePath: /usr/bin/mythbackend
InstallationMedia: Mythbuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
Installed_mythtv_dbg: 2:0.26.0+fixes.20121206.09ac5b2-0ubuntu0mythbuntu2
MarkForUpload: True
ProcCmdline: /usr/bin/mythbackend --syslog local7 --user mythtv
ProcEnviron:
 TERM=linux
 PATH=(custom, no user)
 LANG=en_US.UTF-8
SegvAnalysis:
 Segfault happened at: 0x4691fd <MainServer::GetCurrentMaxBitrate()+125>:	cmpb   $0x0,0x28(%r15)
 PC (0x004691fd) ok
 source "$0x0" ok
 destination "0x28(%r15)" (0x00000028) not located in a known VMA region (needed writable region)!
 Stack memory exhausted (SP below stack segment)
SegvReason: writing NULL VMA
Signal: 11
SourcePackage: mythtv
StacktraceTop:
 IsConnected (this=0x0) at encoderlink.h:45
 MainServer::GetCurrentMaxBitrate (this=0x23df9d0) at mainserver.cpp:4359
 MainServer::GetFilesystemInfos (this=0x23df9d0, fsInfos=...) at mainserver.cpp:4628
 Scheduler::FillDirectoryInfoCache (this=0x23725d0, force=<optimized out>) at scheduler.cpp:5098
 Scheduler::FillRecordingDir (this=0x23725d0, title=..., hostname=..., storagegroup=..., recstartts=..., recendts=..., cardid=17, recording_dir=..., reclist=...) at scheduler.cpp:4652
Title: mythbackend crashed with SIGSEGV in IsConnected()
UpgradeStatus: Upgraded to precise on 2012-10-30 (38 days ago)
UserGroups: audio cdrom dialout video

** Affects: mythbuntu
     Importance: Undecided
         Status: New


** Tags: amd64 apport-crash need-amd64-retrace precise third-party-packages

** Information type changed from Private to Public

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https://bugs.launchpad.net/bugs/1087908

Title:
  mythbackend crashed with SIGSEGV in IsConnected() on startup

Status in Mythbuntu, Ubuntu derivative focused upon MythTV:
  New

Bug description:
  The crash started happening this week when I upgraded to the latest
  security updates for Ubuntu 12.04.1 LTS and the 12/06 0.26-fixes
  update. At first, it only happened when recordings were starting, but
  now I can't start the backend at all.

  ProblemType: Crash
  DistroRelease: Ubuntu 12.04
  Package: mythtv-backend 2:0.26.0+fixes.20121206.09ac5b2-0ubuntu0mythbuntu2 [origin: LP-PPA-mythbuntu-0.26]
  ProcVersionSignature: Ubuntu 3.2.0-34.53-generic 3.2.33
  Uname: Linux 3.2.0-34-generic x86_64
  NonfreeKernelModules: nvidia
  .var.log.mythtv.ffmpeg2pass.0.log:
   
  .var.log.mythtv.mythavtest.log:
   
  .var.log.mythtv.mythccextractor.log:
   
  .var.log.mythtv.mythjobqueue.log:
   
  .var.log.mythtv.mythmediaserver.log:
   
  .var.log.mythtv.mythshutdown.log:
   
  .var.log.mythtv.mythutil.log:
   
  .var.log.mythtv.mythwelcome.log:
   
  ApportVersion: 2.0.1-0ubuntu15
  Architecture: amd64
  CrashDB: mythbuntu
  Date: Fri Dec  7 22:34:22 2012
  ExecutablePath: /usr/bin/mythbackend
  InstallationMedia: Mythbuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
  Installed_mythtv_dbg: 2:0.26.0+fixes.20121206.09ac5b2-0ubuntu0mythbuntu2
  MarkForUpload: True
  ProcCmdline: /usr/bin/mythbackend --syslog local7 --user mythtv
  ProcEnviron:
   TERM=linux
   PATH=(custom, no user)
   LANG=en_US.UTF-8
  SegvAnalysis:
   Segfault happened at: 0x4691fd <MainServer::GetCurrentMaxBitrate()+125>:	cmpb   $0x0,0x28(%r15)
   PC (0x004691fd) ok
   source "$0x0" ok
   destination "0x28(%r15)" (0x00000028) not located in a known VMA region (needed writable region)!
   Stack memory exhausted (SP below stack segment)
  SegvReason: writing NULL VMA
  Signal: 11
  SourcePackage: mythtv
  StacktraceTop:
   IsConnected (this=0x0) at encoderlink.h:45
   MainServer::GetCurrentMaxBitrate (this=0x23df9d0) at mainserver.cpp:4359
   MainServer::GetFilesystemInfos (this=0x23df9d0, fsInfos=...) at mainserver.cpp:4628
   Scheduler::FillDirectoryInfoCache (this=0x23725d0, force=<optimized out>) at scheduler.cpp:5098
   Scheduler::FillRecordingDir (this=0x23725d0, title=..., hostname=..., storagegroup=..., recstartts=..., recendts=..., cardid=17, recording_dir=..., reclist=...) at scheduler.cpp:4652
  Title: mythbackend crashed with SIGSEGV in IsConnected()
  UpgradeStatus: Upgraded to precise on 2012-10-30 (38 days ago)
  UserGroups: audio cdrom dialout video

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