mythbuntu-bugs team mailing list archive

Thread
Date
[Bug 705077] Re: mythbackend will segfault about 10 minutes after starting. "segfault at 50 ip 0209d2dc sp bff215c0 error 4 in libQtCore.so.4.7.0[2041000+290000]"

To: mythbuntu-bugs@xxxxxxxxxxxxxxxxxxx
From: Steve Netting <steve@xxxxxxxxxxxxxx>
Date: Tue, 12 Apr 2011 10:25:23 -0000
Reply-to: Bug 705077 <705077@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Entries from /var/log/mythtv/mythbackend.log:-

2011-04-12 10:57:07.272 mythbackend version: branches/release-0-23-fixes [26437] www.mythtv.org
2011-04-12 10:57:07.305 Using runtime prefix = /usr
2011-04-12 10:57:07.330 Using configuration directory = /home/mythtv/.mythtv
2011-04-12 10:57:07.347 Empty LocalHostName.
2011-04-12 10:57:07.371 Using localhost value of myth
2011-04-12 10:57:07.409 New DB connection, total: 1
2011-04-12 10:57:07.434 Connected to database 'mythconverg' at host: localhost
2011-04-12 10:57:07.455 Closing DB connection named 'DBManager0'
2011-04-12 10:57:07.480 Connected to database 'mythconverg' at host: localhost
2011-04-12 10:57:07.508 Current MythTV Schema Version (DBSchemaVer): 1254
2011-04-12 10:57:07.531 MythBackend: Running as a slave backend.
2011-04-12 10:57:07.556 New DB connection, total: 2
2011-04-12 10:57:07.580 Connected to database 'mythconverg' at host: localhost
2011-04-12 10:57:07.742 New DB connection, total: 3
2011-04-12 10:57:07.771 Connected to database 'mythconverg' at host: localhost
2011-04-12 10:57:09.991 MediaServer:: Loopback address specified - 127.0.0.1. Disabling UPnP
2011-04-12 10:57:10.040 Main::Registering HttpStatus Extension
2011-04-12 10:57:10.065 Enabled verbose msgs:  important general
2011-04-12 10:57:10.092 SG(Videos) Error: Group 'Videos' wants to use directory '/data/mythtv/videos/', but this directory is not writeable.
2011-04-12 10:57:11.093 Connecting to master server: 192.168.0.200:6543
2011-04-12 10:57:11.129 Connected successfully
2011-04-12 10:57:41.159 MythSocket(9a987c0:29): readStringList: Error, timed out after 30000 ms.
2011-04-12 10:57:41.183 MainServer, Error: Failed to open master server socket, timeout
2011-04-12 10:57:41.209 adding: myth as a slave backend server
2011-04-12 10:57:41.209 MainServer, Warning: Unknown socket closing MythSocket(0x9a9b560)
2011-04-12 10:57:41.209 MainServer, Warning: Unknown socket closing MythSocket(0x9a9b060)
2011-04-12 10:57:41.209 MainServer, Warning: Unknown socket closing MythSocket(0x9a98418)
2011-04-12 10:57:41.209 Waiting for a process request thread..
2011-04-12 10:57:41.233 MainServer, Warning: Unknown socket closing MythSocket(0x9a9cd08)
2011-04-12 10:57:41.258 MainServer, Warning: Unknown socket closing MythSocket(0x9a9b560)
2011-04-12 10:57:41.283 MainServer, Warning: Unknown socket closing MythSocket(0x9a9b060)
2011-04-12 10:57:41.308 MainServer, Warning: Unknown socket closing MythSocket(0x9a98418)
2011-04-12 10:57:41.333 Waiting for a process request thread..
2011-04-12 10:57:41.333 MainServer, Warning: Unknown socket closing MythSocket(0x9a977f8)
2011-04-12 10:57:41.359 MythSocket(9a9cd08:-1): writeStringList: Error, socket went unconnected.
                        We wrote 0 of 10 bytes with 1 errors
2011-04-12 10:57:41.384 MythSocket(9a9b560:-1): writeStringList: Error, socket went unconnected.
                        We wrote 0 of 24 bytes with 1 errors
2011-04-12 10:57:41.409 MythSocket(9a9b060:-1): writeStringList: Error, socket went unconnected.
                        We wrote 0 of 24 bytes with 1 errors
2011-04-12 10:57:41.434 MythSocket(9a98418:-1): writeStringList: Error, socket went unconnected.
                        We wrote 0 of 24 bytes with 1 errors
2011-04-12 10:57:41.468 Adding a new process request thread
2011-04-12 10:57:41.483 MainServer, Warning: Unknown socket closing MythSocket(0x9a977f8)
2011-04-12 10:57:41.609 MainServer::ANN Monitor
2011-04-12 10:57:41.609 MainServer::ANN Monitor
2011-04-12 10:57:41.609 MainServer::ANN Monitor
2011-04-12 10:57:41.634 MythSocket(9a977f8:-1): writeStringList: Error, socket went unconnected.
                        We wrote 0 of 24 bytes with 1 errors
2011-04-12 10:57:41.658 adding: myth as a client (events: 2)
2011-04-12 10:57:41.683 adding: myth as a client (events: 0)
2011-04-12 10:57:41.708 adding: myth as a client (events: 0)
2011-04-12 10:57:41.867 MainServer::ANN Monitor
2011-04-12 10:57:41.900 MainServer::ANN Monitor
2011-04-12 10:57:41.983 adding: myth as a client (events: 1)
2011-04-12 10:57:42.016 adding: myth as a client (events: 1)
2011-04-12 10:57:42.208 Connecting to master server: 192.168.0.200:6543
2011-04-12 10:57:42.232 Connected successfully
2011-04-12 10:58:12.258 MythSocket(ffffffffaf90d6e8:37): readStringList: Error, timed out after 30000 ms.
2011-04-12 10:58:12.465 mythbackend version: branches/release-0-23-fixes [26437] www.mythtv.org
2011-04-12 10:58:12.519 Using runtime prefix = /usr
2011-04-12 10:58:12.544 Using configuration directory = /home/mythtv/.mythtv
2011-04-12 10:58:12.569 Empty LocalHostName.
2011-04-12 10:58:12.594 Using localhost value of myth
2011-04-12 10:58:12.632 New DB connection, total: 1
2011-04-12 10:58:12.665 Connected to database 'mythconverg' at host: localhost
2011-04-12 10:58:12.694 Closing DB connection named 'DBManager0'
2011-04-12 10:58:12.728 Connected to database 'mythconverg' at host: localhost
2011-04-12 10:58:12.756 Current MythTV Schema Version (DBSchemaVer): 1254
2011-04-12 10:58:12.787 MythBackend: Running as a slave backend.
2011-04-12 10:58:12.812 New DB connection, total: 2
2011-04-12 10:58:12.836 Connected to database 'mythconverg' at host: localhost
2011-04-12 10:58:12.865 New DB connection, total: 3
2011-04-12 10:58:12.894 Connected to database 'mythconverg' at host: localhost
2011-04-12 10:58:15.104 MediaServer:: Loopback address specified - 127.0.0.1. Disabling UPnP
2011-04-12 10:58:15.163 Main::Registering HttpStatus Extension
2011-04-12 10:58:15.188 Enabled verbose msgs:  important general
2011-04-12 10:58:15.215 SG(Videos) Error: Group 'Videos' wants to use directory '/data/mythtv/videos/', but this directory is not writeable.
2011-04-12 10:58:16.216 Connecting to master server: 192.168.0.200:6543
2011-04-12 10:58:16.252 Connected successfully
2011-04-12 10:58:46.278 MythSocket(90ebee0:29): readStringList: Error, timed out after 30000 ms.
2011-04-12 10:58:46.459 mythbackend version: branches/release-0-23-fixes [26437] www.mythtv.org
2011-04-12 10:58:46.506 Using runtime prefix = /usr
2011-04-12 10:58:46.530 Using configuration directory = /home/mythtv/.mythtv
2011-04-12 10:58:46.547 Empty LocalHostName.
2011-04-12 10:58:46.572 Using localhost value of myth
2011-04-12 10:58:46.610 New DB connection, total: 1
2011-04-12 10:58:46.635 Connected to database 'mythconverg' at host: localhost
2011-04-12 10:58:46.656 Closing DB connection named 'DBManager0'
2011-04-12 10:58:46.681 Connected to database 'mythconverg' at host: localhost
2011-04-12 10:58:46.710 Current MythTV Schema Version (DBSchemaVer): 1254
2011-04-12 10:58:46.732 MythBackend: Running as a slave backend.
2011-04-12 10:58:46.757 New DB connection, total: 2
2011-04-12 10:58:46.781 Connected to database 'mythconverg' at host: localhost
2011-04-12 10:58:46.810 New DB connection, total: 3
2011-04-12 10:58:46.831 Connected to database 'mythconverg' at host: localhost
2011-04-12 10:58:49.071 MediaServer:: Loopback address specified - 127.0.0.1. Disabling UPnP
2011-04-12 10:58:49.100 Main::Registering HttpStatus Extension
2011-04-12 10:58:49.125 Enabled verbose msgs:  important general
2011-04-12 10:58:49.152 SG(Videos) Error: Group 'Videos' wants to use directory '/data/mythtv/videos/', but this directory is not writeable.
2011-04-12 10:58:50.153 Connecting to master server: 192.168.0.200:6543
2011-04-12 10:58:50.231 Connected successfully
2011-04-12 10:59:20.258 MythSocket(9cb1110:29): readStringList: Error, timed out after 30000 ms.
2011-04-12 10:59:20.284 MainServer, Error: Failed to open master server socket, timeout
2011-04-12 10:59:20.310 adding: myth as a slave backend server
2011-04-12 10:59:20.310 MainServer, Warning: Unknown socket closing MythSocket(0x9c6ef88)
2011-04-12 10:59:20.310 MainServer, Warning: Unknown socket closing MythSocket(0xffffffffafa071d8)
2011-04-12 10:59:20.311 MainServer, Warning: Unknown socket closing MythSocket(0xffffffffafa07438)
2011-04-12 10:59:20.311 MainServer, Warning: Unknown socket closing MythSocket(0x9cb10d0)
2011-04-12 10:59:20.311 Waiting for a process request thread..
2011-04-12 10:59:20.334 MainServer, Warning: Unknown socket closing MythSocket(0x9cb2150)
2011-04-12 10:59:20.359 MainServer, Warning: Unknown socket closing MythSocket(0x9c6ef88)
2011-04-12 10:59:20.384 MainServer, Warning: Unknown socket closing MythSocket(0xffffffffafa071d8)
2011-04-12 10:59:20.409 MainServer, Warning: Unknown socket closing MythSocket(0xffffffffafa07438)
2011-04-12 10:59:20.434 MainServer, Warning: Unknown socket closing MythSocket(0x9cb10d0)
2011-04-12 10:59:20.469 Adding a new process request thread
2011-04-12 10:59:20.485 MythSocket(9cb2150:-1): writeStringList: Error, socket went unconnected.
                        We wrote 0 of 10 bytes with 1 errors
2011-04-12 10:59:20.510 MythSocket(9c6ef88:-1): writeStringList: Error, socket went unconnected.
                        We wrote 0 of 24 bytes with 1 errors
2011-04-12 10:59:20.535 MythSocket(ffffffffafa071d8:-1): writeStringList: Error, socket went unconnected.
                        We wrote 0 of 24 bytes with 1 errors
2011-04-12 10:59:20.560 MythSocket(ffffffffafa07438:-1): writeStringList: Error, socket went unconnected.
                        We wrote 0 of 24 bytes with 1 errors
2011-04-12 10:59:20.585 MythSocket(9cb10d0:-1): writeStringList: Error, socket went unconnected.
                        We wrote 0 of 24 bytes with 1 errors
2011-04-12 10:59:20.610 Waiting for a process request thread..
2011-04-12 10:59:20.760 MainServer::ANN Monitor
2011-04-12 10:59:20.760 MainServer::ANN Monitor
2011-04-12 10:59:20.784 adding: myth as a client (events: 0)
2011-04-12 10:59:20.809 adding: myth as a client (events: 0)
2011-04-12 10:59:20.835 MainServer::ANN Monitor
2011-04-12 10:59:20.860 MainServer::ANN Monitor
2011-04-12 10:59:20.884 adding: myth as a client (events: 1)
2011-04-12 10:59:20.909 adding: myth as a client (events: 1)
2011-04-12 10:59:21.309 Connecting to master server: 192.168.0.200:6543
2011-04-12 10:59:21.333 Connected successfully
2011-04-12 10:59:51.360 MythSocket(ffffffffafa0b358:37): readStringList: Error, timed out after 30000 ms.
2011-04-12 10:59:51.395 MainServer, Error: Failed to open master server socket, timeout
2011-04-12 10:59:51.420 adding: myth as a slave backend server
2011-04-12 10:59:51.445 MainServer, Warning: Unknown socket closing MythSocket(0x9cd8c20)
2011-04-12 10:59:51.471 MythSocket(9cd8c20:-1): writeStringList: Error, socket went unconnected.
                        We wrote 0 of 10 bytes with 1 errors
2011-04-12 10:59:52.420 Connecting to master server: 192.168.0.200:6543
2011-04-12 10:59:52.459 Connected successfully
2011-04-12 11:00:22.488 MythSocket(ffffffffafa0b518:37): readStringList: Error, timed out after 30000 ms.

-- 
You received this bug notification because you are a member of Mythbuntu
Bug Team, which is subscribed to Mythbuntu.
https://bugs.launchpad.net/bugs/705077

Title:
  mythbackend will segfault about 10 minutes after starting. "segfault
  at 50 ip 0209d2dc sp bff215c0 error 4 in
  libQtCore.so.4.7.0[2041000+290000]"

Status in Mythbuntu, Ubuntu derivative focused upon MythTV:
  Invalid

Bug description:
  After performing an apt-get update && apt-get upgrade today (1/19),
  mythbackend is no longer stable. There is no exiting information
  contained in the mythbackend.log file, however there are numerous
  reports of "MainServer, Warning: Unknown socket closing MythSocket"
  and "MainServer, Error: Failed t oopen master server socket, timeout."
  The segfault is recorded in /var/log/messages as follows: "kernel:
  [10921.030926] mythbackend[5755]: segfault at 50 ip 0209d2dc sp
  bff215c0 error 4 in libQtCore.so.4.7.0[2041000+290000]"

  This issue was not present in the earlier package, which I updated to
  earlier this week when I upgraded from 10.04 to 10.10.

  ProblemType: Bug
  DistroRelease: Ubuntu 10.10
  Package: mythtv-backend 2:0.24.0+fixes.20110119.40df4b6-0ubuntu0mythbuntu2
  ProcVersionSignature: Ubuntu 2.6.35-24.42-generic 2.6.35.8
  Uname: Linux 2.6.35-24-generic i686
  NonfreeKernelModules: nvidia
  Architecture: i386
  CrashDB: mythbuntu
  Date: Wed Jan 19 14:18:35 2011
  InstallationMedia: Mythbuntu 9.10 "Karmic Koala" - Release i386 (20091028.4)
  Installed_mythtv_dbg: 0.0
  ProcEnviron:
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: mythtv
References

[Bug 705077] [NEW] mythbackend will segfault about 10 minutes after starting. "segfault at 50 ip 0209d2dc sp bff215c0 error 4 in libQtCore.so.4.7.0[2041000+290000]"
From: Will Marler, 2011-01-19