nepomukservices[2448]: segfaults error 4 in libsoprano.so.4.3.0

[Mark Fraser]

Description: Ubuntu 10.04 LTS
Release: 10.04

libsoprano4:
  Installed: 2.4.2+dfsg.1-0ubuntu1.1
  Candidate: 2.4.2+dfsg.1-0ubuntu1.1
  Version table:
 *** 2.4.2+dfsg.1-0ubuntu1.1 0
        500 http://gb.archive.ubuntu.com/ubuntu/ lucid-updates/main Packages
        100 /var/lib/dpkg/status
     2.4.2+dfsg.1-0ubuntu1 0
        500 http://gb.archive.ubuntu.com/ubuntu/ lucid/main Packages

I've started to get the following errors on startup:
nepomukservices[2448]: segfault at 17 ip 02ef7ca8 sp bfdff3a0 error 4 in libsoprano.so.4.3.0[2eb2000+ef000]
nepomukservices[2523]: segfault at 62696c04 ip 025fdca8 sp bff42c90 error 4 in libsoprano.so.4.3.0[25b8000+ef000]
nepomukservices[2531]: segfault at a ip 02331ca8 sp bf945540 error 4 in libsoprano.so.4.3.0[22ec000+ef000]
nepomukservices[2537]: segfault at 62696c04 ip 03e58ca8 sp bf910ea0 error 4 in libsoprano.so.4.3.0[3e13000+ef000]

Only noticed as I was looking into Akonadi errors.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: libsoprano4 2.4.2+dfsg.1-0ubuntu1.1
ProcVersionSignature: Ubuntu 2.6.32-22.36-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-22-generic i686
NonfreeKernelModules: nvidia
Architecture: i386
Date: Sat Jun 5 13:13:23 2010
InstallationMedia: Kubuntu 10.04 "Lucid Lynx" - Beta i386 (20100406.1)
ProcEnviron:
 LANGUAGE=
 PATH=(custom, user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: soprano

[Chris Samuel (chris-csamuel)]

Can confirm I'm seeing the same issue here:

libsoprano4:
  Installed: 2.4.2+dfsg.1-0ubuntu1.1
  Candidate: 2.4.2+dfsg.1-0ubuntu1.1
  Version table:
 *** 2.4.2+dfsg.1-0ubuntu1.1 0
        500 http://mirror.linux.org.au/ubuntu/ lucid-updates/main Packages
        500 http://mirrors.uwa.edu.au/ubuntu/ lucid-updates/main Packages
        100 /var/lib/dpkg/status
     2.4.2+dfsg.1-0ubuntu1 0
        500 http://mirror.linux.org.au/ubuntu/ lucid/main Packages
        500 http://mirrors.uwa.edu.au/ubuntu/ lucid/main Packages

The nepomukstrigiservice.so I'm using is from KDE 4.4.4 from the PPA, not sure what the OP is using.

kdebase-runtime:
  Installed: 4:4.4.4-0ubuntu1~lucid1~ppa1
  Candidate: 4:4.4.4-0ubuntu1~lucid1~ppa1
  Version table:
 *** 4:4.4.4-0ubuntu1~lucid1~ppa1 0
        500 http://ppa.launchpad.net/kubuntu-ppa/ppa/ubuntu/ lucid/main Packages
        100 /var/lib/dpkg/status
     4:4.4.2-0ubuntu4.1 0
        500 http://mirror.linux.org.au/ubuntu/ lucid-updates/main Packages
        500 http://mirrors.uwa.edu.au/ubuntu/ lucid-updates/main Packages
     4:4.4.2-0ubuntu4 0
        500 http://mirror.linux.org.au/ubuntu/ lucid/main Packages
        500 http://mirrors.uwa.edu.au/ubuntu/ lucid/main Packages

[Mark Fraser (launchpad-mfraz)]

Yes I'm using KDE 4.4.4 from PPA too. Sorry forgot to mention that.

[Thomas Tanghus (tanghus)]

I can also confirm this on 4.4.4 from PPA.

Except from kern.log:

Jun 8 00:29:09 tanghus kernel: [ 111.799499] nepomukservices[1297]: segfault at b ip b624eca8 sp bf9ca770 error 4 in libsoprano.so
.4.3.0[b6209000+ef000]
Jun 8 00:29:10 tanghus kernel: [ 112.532716] nepomukservices[1549]: segfault at c ip b61ddca8 sp bf9a5660 error 4 in libsoprano.so
.4.3.0[b6198000+ef000]
Jun 8 00:29:15 tanghus kernel: [ 117.509575] nepomukservices[1561]: segfault at c ip b61d5ca8 sp bfd230d0 error 4 in libsoprano.so
.4.3.0[b6190000+ef000]
Jun 8 00:29:25 tanghus kernel: [ 127.338223] nepomukservices[1600]: segfault at 72737533 ip b613cca8 sp bfd858e0 error 4 in libsoprano.so.4.3.0[b60f7000+ef000]

[Tomasz Czapiewski (xeros)]

I can confirm it too on KDE 4.4.4 from Kubuntu-PPA:

[ 3725.568781] nepomukservices[6266]: segfault at 758b2cec ip 07f4ccab sp bfe14580 error 4 in libsoprano.so.4.3.0[7f07000+ef000]
[ 3728.310989] nepomukservices[6281]: segfault at 0 ip 00cddcab sp bfd19ed0 error 4 in libsoprano.so.4.3.0[c98000+ef000]
[ 3734.568916] nepomukservices[6291]: segfault at 7273752f ip 06dcacb3 sp bff48910 error 6 in libsoprano.so.4.3.0[6d85000+ef000]
[ 3737.588740] nepomukservices[6298]: segfault at 5 ip 001c0604 sp bfcfeb10 error 4 in libQtCore.so.4.6.3[110000+273000]
[ 3739.138668] nepomukservices[6397]: segfault at 14 ip 007f7ca8 sp bfc4ad50 error 4 in libsoprano.so.4.3.0[7b2000+ef000]
[ 3741.377795] nepomukservices[6529]: segfault at 14 ip 02211ca8 sp bf964df0 error 4 in libsoprano.so.4.3.0[21cc000+ef000]

It could be triggered for example by running DigiKam with Nepomuk enabled.

[Mark Fraser (launchpad-mfraz)]

I've since upgraded to KDE SC 4.5 beta 2 from the Kubuntu Beta Backports PPA and now I don't get the above error.

[Chris Samuel (chris-csamuel)]

I too have upgraded to KDE 4.5.0 beta 2 and found the issue has gone away; I suspect that's because Mark and I have picked up a newer version of the libsoprano package and that the issues that we were seeing were due to interoperability issues between KDE 4.4.4 in PPA and libsoprano in the Ubuntu repositories.

$ apt-cache policy libsoprano4
libsoprano4:
  Installed: 2.4.63+svn1134879+dfsg.1-0ubuntu1~lucid1~ppa1
  Candidate: 2.4.63+svn1134879+dfsg.1-0ubuntu1~lucid1~ppa1
  Version table:
 *** 2.4.63+svn1134879+dfsg.1-0ubuntu1~lucid1~ppa1 0
        500 http://ppa.launchpad.net/kubuntu-ppa/beta/ubuntu/ lucid/main Packages
        100 /var/lib/dpkg/status
     2.4.2+dfsg.1-0ubuntu1.1 0
        500 http://mirror.linux.org.au/ubuntu/ lucid-updates/main Packages
        500 http://mirrors.uwa.edu.au/ubuntu/ lucid-updates/main Packages
     2.4.2+dfsg.1-0ubuntu1 0
        500 http://mirror.linux.org.au/ubuntu/ lucid/main Packages
        500 http://mirrors.uwa.edu.au/ubuntu/ lucid/main Packages

Of course I've traded that problem for a massive memory leak in plasma-desktop, but that's another story.. ;-)

[BlCa (blca)]

Well, I can confirm that the issue's gone with a soprano 2.4.3 snapshot and KDE 4.4.4.

I've put the packages there for those who want stick to KDE's stable branch.

https://edge.launchpad.net/~blca/+archive/temp/+packages

[Heiko Helmle (hel)]

2.4.2+dfsg.1-0ubuntu1.1 seems to have went into lucid-updates - including the segfault problems.