[Bug 269487] New: Nepomuk sometimes crashes on log out (multiple user sessions)

[Reartes Guillermo]

https://bugs.kde.org/show_bug.cgi?id=269487

           Summary: Nepomuk sometimes crashes on log out (multiple user
                    sessions)
           Product: kde
           Version: unspecified
          Platform: Fedora RPMs
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: crash
          Priority: NOR
         Component: general
        AssignedTo: unassigned-bugs at kde.org
        ReportedBy: rtguille at gmail.com


Version:           unspecified (using KDE 4.6.1) 
OS:                Linux

F15 Alpha, X86_64

Sometimes, when loggin out, nepomuk crashes.
the crashed happened in case of multiple xorg sessions (kdm)


The following crash corresponds to the second user1 instance log out.
----

Application: Nepomuk Service Stub (nepomukservicestub), signal: Segmentation
fault
82    T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
[KCrash Handler]
#6  0x00007fa3a6d9bf38 in Nepomuk::Repository::close (this=0x2023a40) at
/usr/src/debug/kdebase-runtime-4.6.1/nepomuk/services/storage/repository.cpp:73
#7  0x00007fa3a6d9c02c in Nepomuk::Repository::~Repository (this=0x2023a40,
__in_chrg=<optimized out>) at
/usr/src/debug/kdebase-runtime-4.6.1/nepomuk/services/storage/repository.cpp:65
#8  0x00007fa3a6d9c0f9 in Nepomuk::Repository::~Repository (this=0x2023a40,
__in_chrg=<optimized out>) at
/usr/src/debug/kdebase-runtime-4.6.1/nepomuk/services/storage/repository.cpp:66
#9  0x00007fa3a6b6b1ef in qDeleteAll<QHash<QString,
Soprano::Model*>::const_iterator> (end=<optimized out>, begin=<optimized out>)
at /usr/include/QtCore/qalgorithms.h:322
#10 qDeleteAll<QHash<QString, Soprano::Model*> > (c=...) at
/usr/include/QtCore/qalgorithms.h:330
#11 Soprano::Server::ServerCore::~ServerCore (this=0x20235e0,
__in_chrg=<optimized out>) at
/usr/src/debug/soprano-2.6.0/server/servercore.cpp:77
#12 0x00007fa3a6d9ae7c in Nepomuk::Core::~Core (this=0x20235e0,
__in_chrg=<optimized out>) at
/usr/src/debug/kdebase-runtime-4.6.1/nepomuk/services/storage/nepomukcore.cpp:45
#13 0x00007fa3a6d9af29 in Nepomuk::Core::~Core (this=0x20235e0,
__in_chrg=<optimized out>) at
/usr/src/debug/kdebase-runtime-4.6.1/nepomuk/services/storage/nepomukcore.cpp:48
#14 0x00000031b896bd75 in QObjectPrivate::deleteChildren (this=0x2023b30) at
kernel/qobject.cpp:1955
#15 0x00000031b8971329 in QObject::~QObject (this=0x2051650,
__in_chrg=<optimized out>) at kernel/qobject.cpp:946
#16 0x00007fa3a6d9a153 in ~Storage (this=0x2051650, __in_chrg=<optimized out>)
at /usr/src/debug/kdebase-runtime-4.6.1/nepomuk/services/storage/storage.cpp:50
#17 Nepomuk::Storage::~Storage (this=0x2051650, __in_chrg=<optimized out>) at
/usr/src/debug/kdebase-runtime-4.6.1/nepomuk/services/storage/storage.cpp:52
#18 0x00000031b896bd75 in QObjectPrivate::deleteChildren (this=0x1fa2570) at
kernel/qobject.cpp:1955
#19 0x00000031b8971329 in QObject::~QObject (this=0x1fa0980,
__in_chrg=<optimized out>) at kernel/qobject.cpp:946
#20 0x0000000000404239 in Nepomuk::ServiceControl::~ServiceControl
(this=0x1fa0980, __in_chrg=<optimized out>) at
/usr/src/debug/kdebase-runtime-4.6.1/nepomuk/servicestub/servicecontrol.cpp:39
#21 0x00000031b896bd75 in QObjectPrivate::deleteChildren (this=0x1f044d0) at
kernel/qobject.cpp:1955
#22 0x00000031b8971329 in QObject::~QObject (this=0x7fffa25bd2d0,
__in_chrg=<optimized out>) at kernel/qobject.cpp:946
#23 0x00000031bc9c0f89 in QApplication::~QApplication (this=0x7fffa25bd2d0,
__in_chrg=<optimized out>) at kernel/qapplication.cpp:1080
#24 0x0000000000403900 in main (argc=2, argv=0x7fffa25bd768) at
/usr/src/debug/kdebase-runtime-4.6.1/nepomuk/servicestub/main.cpp:101




Reproducible: Sometimes

Steps to Reproduce:
#1 user1 log in, user 2 log in, user2 log out > user2 nepomuk crash

#2 user1 log in, user 1 log in again (not something that is normally
performed), log out second user1 > second user1 nepomuk crashes

Actual Results:  
nepomuk crashes on log out.

Expected Results:  
no crash

kdebase.x86_64                         6:4.6.1-2.fc15 @updates-testing          
kdebase-libs.x86_64                    6:4.6.1-2.fc15 @updates-testing          

kdebase-runtime.x86_64                  4.6.1-3.fc15 @updates-testing          
kdebase-runtime-debuginfo.x86_64        4.6.1-3.fc15 @updates-testing-debuginfo
kdebase-runtime-flags.noarch            4.6.1-3.fc15 @updates-testing          
kdebase-runtime-libs.x86_64             4.6.1-3.fc15 @updates-testing          
kdebase-workspace.x86_64                4.6.1-5.fc15 @updates-testing          
kdebase-workspace-debuginfo.x86_64      4.6.1-5.fc15 @updates-testing-debuginfo
kdebase-workspace-libs.x86_64           4.6.1-5.fc15 @updates-testing

nepomukcontroller.x86_64                0.2-4.fc15   @updates-testing

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