[Bug 338205] [NEW] [jaunty] plasma crashes on start with SIGSEGV

[Jeremy Kerr]

Public bug reported:

Binary package hint: kdebase-plasma

When I log in via kdm, my KDE session does not have a panel or
background.

This has started happening since today's upgrades. Versions are listed
below.

If I try to manually run plasma from the shell, I get a lot of print
output from plasma, including the following:

plasma(576) InterfaceItem::setEnabled: true
plasma(576) NetworkManagerApplet::showVpn: SHOWING
<unknown program name>(617)/ checkComposite: Plasma has an argb visual 0x9514a10 79691777
<unknown program name>(617)/ checkComposite: Plasma can use COMPOSITE for effects on 0x9514360
plasma(575): Communication problem with  "plasma" , it probably crashed. 
Error message was:  "org.freedesktop.DBus.Error.NoReply" : " "Message did not receive a reply (timeout by message bus)" " 

KCrash: Application 'plasma' crashing...

Running under 'strace -e trace=process -f' gives:

plasma(19255) NetworkManagerApplet::showVpn: SHOWING
[pid 19255] --- SIGSEGV (Segmentation fault) @ 0 (0) ---
Process 19255 detached
[pid 19286] +++ killed by SIGSEGV (core dumped) +++

So looks like we have a SIGSEGV. Valgrind shows a breakage in
libqtcore4:

plasma(3710) NetworkManagerApplet::showVpn: SHOWING                                                                                               
==3710==                                                                                                                                          
==3710== Invalid read of size 4                                                                                                                   
==3710==    at 0x5A6DEBA: QTimer::stop() (in /usr/lib/libQtCore.so.4.5.0)                                                                         
==3710==    by 0x408387F: (within /usr/lib/libkdeinit4_plasma.so)                                                                                 
==3710==    by 0x40884AA: (within /usr/lib/libkdeinit4_plasma.so)                                                                                 
==3710==    by 0x5A68CB7: QMetaObject::activate(QObject*, int, int, void**) (in /usr/lib/libQtCore.so.4.5.0)                                      
==3710==    by 0x5A69941: QMetaObject::activate(QObject*, QMetaObject const*, int, void**) (in /usr/lib/libQtCore.so.4.5.0)                       
==3710==    by 0x41BD546: Plasma::View::sceneRectAboutToChange() (in /usr/lib/libplasma.so.3.0.0)                                                 
==3710==    by 0x41BE7AE: (within /usr/lib/libplasma.so.3.0.0)                                                                                    
==3710==    by 0x41BDCAA: Plasma::View::qt_metacall(QMetaObject::Call, int, void**) (in /usr/lib/libplasma.so.3.0.0)                              
==3710==    by 0x4088469: (within /usr/lib/libkdeinit4_plasma.so)                                                                                 
==3710==    by 0x5A68CB7: QMetaObject::activate(QObject*, int, int, void**) (in /usr/lib/libQtCore.so.4.5.0)                                      
==3710==    by 0x5A69941: QMetaObject::activate(QObject*, QMetaObject const*, int, void**) (in /usr/lib/libQtCore.so.4.5.0)                       
==3710==    by 0x413E126: Plasma::Applet::geometryChanged() (in /usr/lib/libplasma.so.3.0.0)                                                      
==3710==  Address 0x8 is not stack'd, malloc'd or (recently) free'd                                                                               
KCrash: Application 'plasma' crashing... 


Package versions:
[jk at pingu ~]$ apt-cache policy kdebase-plasma libqtcore4
kdebase-plasma:
  Installed: 4:4.2.1-0ubuntu1
  Candidate: 4:4.2.1-0ubuntu1
  Version table:
 *** 4:4.2.1-0ubuntu1 0
        500 http://mirror.internode.on.net jaunty/main Packages
        100 /var/lib/dpkg/status
libqtcore4:
  Installed: 4.5.0-0ubuntu1
  Candidate: 4.5.0-0ubuntu1
  Version table:
 *** 4.5.0-0ubuntu1 0
        500 http://mirror.internode.on.net jaunty/main Packages
        100 /var/lib/dpkg/status

** Affects: kdebase (Ubuntu)
     Importance: Undecided
         Status: New

-- 
[jaunty] plasma crashes on start with SIGSEGV
https://bugs.launchpad.net/bugs/338205
You received this bug notification because you are a member of Kubuntu
Bugs, which is subscribed to kdebase in ubuntu.