mythfrontend.real crashed with SIGSEGV in memcpy()

[L.D. Paniak]

Binary package hint: mythtv

Crash on channel change.

ProblemType: Crash
DistroRelease: Ubuntu 10.04
Package: mythtv-frontend 0.23.0+fixes23820-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.32-17.26-generic 2.6.32.10+drm33.1
Uname: Linux 2.6.32-17-generic x86_64
Architecture: amd64
CrashCounter: 1
Date: Sun Mar 28 09:42:03 2010
ExecutablePath: /usr/bin/mythfrontend.real
InstallationMedia: Mythbuntu 10.04 "Lucid Lynx" - Alpha amd64 (20100113)
Installed_mythplugins-dbg: 0.0
Installed_mythtv-dbg: 0.0
ProcCmdline: /usr/bin/mythfrontend.real --logfile /var/log/mythtv/mythfrontend.log
ProcEnviron:
 LANG=en_CA.utf8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7ff4b4972d8b <memcpy+347>: rep movsq %ds:(%rsi),%es:(%rdi)
 PC (0x7ff4b4972d8b) ok
 source "%ds:(%rsi)" (0x00000000) not located in a known VMA region (needed readable region)!
 destination "%es:(%rdi)" (0x7ff4a4759830) ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: mythtv
StacktraceTop:
 memcpy () from /lib/libc.so.6
 VideoOutput::CopyFrame(VideoFrame_*, VideoFrame_ const*) () from /usr/lib/libmythtv-0.23.so.0
 VideoOutputXv::UpdatePauseFrame() ()
 NuppelVideoPlayer::DisplayPauseFrame() ()
 NuppelVideoPlayer::DisplayNormalFrame() ()
Title: mythfrontend.real crashed with SIGSEGV in memcpy()
UserGroups: adm admin audio cdrom dialout dip fax fuse lpadmin mythtv netdev plugdev sambashare tape video
XsessionErrors: (polkit-gnome-authentication-agent-1:1512): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed

[Apport retracing service (apport)]

StacktraceTop:
 memcpy () at ../sysdeps/x86_64/memcpy.S:267
 VideoOutput::CopyFrame ()
 VideoOutputXv::UpdatePauseFrame ()
 NuppelVideoPlayer::DisplayPauseFrame ()
 NuppelVideoPlayer::DisplayNormalFrame ()

[MarcRandolph (mrand)]

Howdy, and thank you for helping to improve Mythbuntu by opening this ticket. Unfortunately, through no fault of your own the backtrace attached is not useful to the developers. Could you please update to the latest version of the debug packages by following the "basic backtrace" directions outlined here:

http://www.mythtv.org/wiki/Debugging#Debugging_with_Ubuntu_packages

The above process should result in a new ticket being opened, so I'm going to close this one. Thank you!

[L.D. Paniak (ldpaniak)]

This is silly. Testing versions of ubuntu should ship with debug packages enabled. Isn't the whole point of alpha/beta debugging?

[Mario Limonciello (superm1)]

If i'm not mistaken, no coredump was uploaded. Without a coredump, the apport retracer wouldn't be able to handle it anyhow.

Adding pitti for comments on if this is correct on why the retracer failed here.