233766 – Deadlock at changing from mysql to sqlite

Bug 233766 - Deadlock at changing from mysql to sqlite

Summary: Deadlock at changing from mysql to sqlite

Status:	RESOLVED FIXED

Alias:	None

Product:	digikam
Classification:	Applications
Component:	Database-Migration (show other bugs)
Version:	1.3.0
Platform:	Arch Linux Unspecified

Importance:	NOR crash
Target Milestone:	---
Assignee:	Digikam Developers

URL:
Keywords:

Depends on:
Blocks:

Reported:	2010-04-08 20:29 UTC by Johannes Wienke
Modified:	2017-07-25 10:36 UTC (History)
CC List:	0 users

See Also:
Latest Commit:
Version Fixed In:	1.3.0

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Description Johannes Wienke 2010-04-08 20:29:20 UTC

Version:           trunk (using KDE 4.4.2)
Installed from:    Archlinux Packages

Digikam was set to mysql but the settings were wrong from a test run, so no actual connection to a mysql server was existing. Then I changed the settings back to my sqlite database. Pressing ok never returned. This is the backtrace of an attached gdb:

(gdb) thread apply all bt

Thread 16 (Thread 0x7f6ac7e77710 (LWP 6549)):
#0  0x00007f6ad759b10c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f6ad781e8a3 in ?? () from /usr/lib/libQtCore.so.4
#2  0x00007f6ad781a3e5 in QMutex::lock() () from /usr/lib/libQtCore.so.4
#3  0x00007f6adabf9a44 in DatabaseAccess (this=<value optimized out>) at /home/languitar/workspace/digiKam/libs/database/databaseaccess.cpp:125
#4  0x00007f6adabfa0e2 in Digikam::DatabaseAccess::checkReadyForUse (observer=0x1d0dfe0)
    at /home/languitar/workspace/digiKam/libs/database/databaseaccess.cpp:234
#5  0x0000000000651387 in Digikam::ScanController::run (this=0x1d0dfd0) at /home/languitar/workspace/digiKam/digikam/scancontroller.cpp:525
#6  0x00007f6ad781f155 in ?? () from /usr/lib/libQtCore.so.4
#7  0x00007f6ad759688a in start_thread () from /lib/libpthread.so.0
#8  0x00007f6ad68e59ed in clone () from /lib/libc.so.6
#9  0x0000000000000000 in ?? ()

Thread 15 (Thread 0x7f6ac7676710 (LWP 6559)):
#0  0x00007f6ad68dd1c3 in poll () from /lib/libc.so.6
#1  0x00007f6ad3398979 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#2  0x00007f6ad3398dcc in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#3  0x00007f6ad793cc13 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#4  0x00007f6ad79120c2 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#5  0x00007f6ad791249c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#6  0x00007f6ad781c759 in QThread::exec() () from /usr/lib/libQtCore.so.4
#7  0x00007f6ad781f155 in ?? () from /usr/lib/libQtCore.so.4
#8  0x00007f6ad759688a in start_thread () from /lib/libpthread.so.0
#9  0x00007f6ad68e59ed in clone () from /lib/libc.so.6
#10 0x0000000000000000 in ?? ()

Thread 14 (Thread 0x7f6ac6653710 (LWP 6560)):
#0  0x00007f6ad68dd1c3 in poll () from /lib/libc.so.6
#1  0x00007f6ad3398979 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#2  0x00007f6ad3398dcc in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#3  0x00007f6ad793cc13 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#4  0x00007f6ad79120c2 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#5  0x00007f6ad791249c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#6  0x00007f6ad781c759 in QThread::exec() () from /usr/lib/libQtCore.so.4
#7  0x00007f6ad781f155 in ?? () from /usr/lib/libQtCore.so.4
#8  0x00007f6ad759688a in start_thread () from /lib/libpthread.so.0
#9  0x00007f6ad68e59ed in clone () from /lib/libc.so.6
#10 0x0000000000000000 in ?? ()

---Type <return> to continue, or q <return> to quit---
Thread 13 (Thread 0x7f6ac5d2e710 (LWP 6561)):
#0  0x00007f6ad759b10c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f6ad782011b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#2  0x00007f6adb117f42 in Digikam::LoadSaveThread::run (this=0x206d4d0) at /home/languitar/workspace/digiKam/libs/threadimageio/loadsavethread.cpp:131
#3  0x00007f6ad781f155 in ?? () from /usr/lib/libQtCore.so.4
#4  0x00007f6ad759688a in start_thread () from /lib/libpthread.so.0
#5  0x00007f6ad68e59ed in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 12 (Thread 0x7f6ac552d710 (LWP 6562)):
#0  0x00007f6ad68dd1c3 in poll () from /lib/libc.so.6
#1  0x00007f6ad3398979 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#2  0x00007f6ad3398dcc in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#3  0x00007f6ad793cc13 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#4  0x00007f6ad79120c2 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#5  0x00007f6ad791249c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#6  0x00007f6ad781c759 in QThread::exec() () from /usr/lib/libQtCore.so.4
#7  0x00007f6ad781f155 in ?? () from /usr/lib/libQtCore.so.4
#8  0x00007f6ad759688a in start_thread () from /lib/libpthread.so.0
#9  0x00007f6ad68e59ed in clone () from /lib/libc.so.6
#10 0x0000000000000000 in ?? ()

Thread 11 (Thread 0x7f6ac4d2c710 (LWP 6563)):
#0  0x00007f6ad68dd1c3 in poll () from /lib/libc.so.6
#1  0x00007f6ad3398979 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#2  0x00007f6ad3398dcc in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#3  0x00007f6ad793cc13 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#4  0x00007f6ad79120c2 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#5  0x00007f6ad791249c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#6  0x00007f6ad781c759 in QThread::exec() () from /usr/lib/libQtCore.so.4
#7  0x00007f6ad781f155 in ?? () from /usr/lib/libQtCore.so.4
#8  0x00007f6ad759688a in start_thread () from /lib/libpthread.so.0
#9  0x00007f6ad68e59ed in clone () from /lib/libc.so.6
#10 0x0000000000000000 in ?? ()

Thread 10 (Thread 0x7f6ab9005710 (LWP 6564)):
#0  0x00007f6ad759b479 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f6abe572af1 in metronom_sync_loop () from /usr/lib/libxine.so.1
#2  0x00007f6ad759688a in start_thread () from /lib/libpthread.so.0
#3  0x00007f6ad68e59ed in clone () from /lib/libc.so.6
---Type <return> to continue, or q <return> to quit---
#4  0x0000000000000000 in ?? ()

Thread 9 (Thread 0x7f6ab7594710 (LWP 6565)):
#0  0x00007f6ad68df233 in select () from /lib/libc.so.6
#1  0x00007f6abe59aa65 in xine_usec_sleep () from /usr/lib/libxine.so.1
#2  0x00007f6abe580499 in video_out_loop () from /usr/lib/libxine.so.1
#3  0x00007f6ad759688a in start_thread () from /lib/libpthread.so.0
#4  0x00007f6ad68e59ed in clone () from /lib/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 8 (Thread 0x7f6ab6d93710 (LWP 6566)):
#0  0x00007f6ad68dd1c3 in poll () from /lib/libc.so.6
#1  0x00007f6ad3398979 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#2  0x00007f6ad3398dcc in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#3  0x00007f6ad793cc13 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#4  0x00007f6ad79120c2 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#5  0x00007f6ad791249c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#6  0x00007f6ad781c759 in QThread::exec() () from /usr/lib/libQtCore.so.4
#7  0x00007f6abe7cb7c6 in Phonon::Xine::XineThread::run() () from /usr/lib/kde4/plugins/phonon_backend/phonon_xine.so
#8  0x00007f6ad781f155 in ?? () from /usr/lib/libQtCore.so.4
#9  0x00007f6ad759688a in start_thread () from /lib/libpthread.so.0
#10 0x00007f6ad68e59ed in clone () from /lib/libc.so.6
#11 0x0000000000000000 in ?? ()

Thread 7 (Thread 0x7f6ab6389710 (LWP 6569)):
#0  0x00007f6ad68dd1c3 in poll () from /lib/libc.so.6
#1  0x00007f6ab638f7ae in ao_alsa_handle_event_thread () from /usr/lib/xine/plugins/1.28/xineplug_ao_out_alsa.so
#2  0x00007f6ad759688a in start_thread () from /lib/libpthread.so.0
#3  0x00007f6ad68e59ed in clone () from /lib/libc.so.6
#4  0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7f6ab5b88710 (LWP 6570)):
#0  0x00007f6ad759b10c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f6abe5835fb in ao_loop () from /usr/lib/libxine.so.1
#2  0x00007f6ad759688a in start_thread () from /lib/libpthread.so.0
#3  0x00007f6ad68e59ed in clone () from /lib/libc.so.6
#4  0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7f6ab3901710 (LWP 6571)):
#0  0x00007f6ad759b10c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
---Type <return> to continue, or q <return> to quit---
#1  0x00007f6ad782011b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#2  0x00007f6adb117f42 in Digikam::LoadSaveThread::run (this=0x281af60) at /home/languitar/workspace/digiKam/libs/threadimageio/loadsavethread.cpp:131
#3  0x00007f6ad781f155 in ?? () from /usr/lib/libQtCore.so.4
#4  0x00007f6ad759688a in start_thread () from /lib/libpthread.so.0
#5  0x00007f6ad68e59ed in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f6ab3100710 (LWP 6577)):
#0  0x00007f6ad759b10c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f6ad782011b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#2  0x00007f6adb117f42 in Digikam::LoadSaveThread::run (this=0x2f11ee0) at /home/languitar/workspace/digiKam/libs/threadimageio/loadsavethread.cpp:131
#3  0x00007f6ad781f155 in ?? () from /usr/lib/libQtCore.so.4
#4  0x00007f6ad759688a in start_thread () from /lib/libpthread.so.0
#5  0x00007f6ad68e59ed in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f6ab10fc710 (LWP 6578)):
#0  0x00007f6ad759b10c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f6ad782011b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#2  0x00007f6adb117f42 in Digikam::LoadSaveThread::run (this=0x2ffc350) at /home/languitar/workspace/digiKam/libs/threadimageio/loadsavethread.cpp:131
#3  0x00007f6ad781f155 in ?? () from /usr/lib/libQtCore.so.4
#4  0x00007f6ad759688a in start_thread () from /lib/libpthread.so.0
#5  0x00007f6ad68e59ed in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f6aab7fe710 (LWP 6639)):
#0  0x00007f6ad759b10c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f6ad782011b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#2  0x00007f6adb117f42 in Digikam::LoadSaveThread::run (this=0x2f396f0) at /home/languitar/workspace/digiKam/libs/threadimageio/loadsavethread.cpp:131
#3  0x00007f6ad781f155 in ?? () from /usr/lib/libQtCore.so.4
#4  0x00007f6ad759688a in start_thread () from /lib/libpthread.so.0
#5  0x00007f6ad68e59ed in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f6ade0a67c0 (LWP 6545)):
#0  0x00007f6ad68dd1c3 in poll () from /lib/libc.so.6
#1  0x00007f6ad3398979 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#2  0x00007f6ad3398dcc in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#3  0x00007f6ad793cc13 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#4  0x00007f6ad887fd6e in ?? () from /usr/lib/libQtGui.so.4
---Type <return> to continue, or q <return> to quit---
#5  0x00007f6ad79120c2 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#6  0x00007f6ad791249c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#7  0x00000000006505f8 in Digikam::ScanController::databaseInitialization (this=0x1d0dfd0) at /home/languitar/workspace/digiKam/digikam/scancontroller.cpp:347
#8  0x00000000005c0cf2 in Digikam::AlbumManager::setDatabase (this=<value optimized out>, dbType=<value optimized out>, dbName=<value optimized out>, 
    dbThumbnailsName=<value optimized out>, dbHostName=<value optimized out>, dbPort=<value optimized out>, dbUser=..., dbPasswd=..., dbConnectOptions=..., 
    internalServer=false, priority=false, suggestedAlbumRoot=...) at /home/languitar/workspace/digiKam/digikam/albummanager.cpp:713
#9  0x00000000005c87d0 in Digikam::AlbumManager::changeDatabase (this=<value optimized out>, dbType=<value optimized out>, dbName=<value optimized out>, 
    dbThumbnailsName=<value optimized out>, dbHostName=<value optimized out>, dbPort=<value optimized out>, dbUser=..., dbPasswd=..., dbConnectOptions=..., 
    internalServer=false) at /home/languitar/workspace/digiKam/digikam/albummanager.cpp:567
#10 0x00000000005fc2ce in Digikam::DigikamApp::slotSetupChanged (this=0x1cdc2d0) at /home/languitar/workspace/digiKam/digikam/digikamapp.cpp:2162
#11 0x000000000060b4fd in Digikam::DigikamApp::qt_metacall (this=0x1cdc2d0, _c=QMetaObject::InvokeMetaMethod, _id=-516, _a=0x7fff90d50820)
    at /home/languitar/workspace/build/digiKam/digikam/digikamapp.moc:226
#12 0x00007f6ad79264df in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#13 0x00000000004acd6d in Digikam::Setup::slotOkClicked (this=0x2b7eea0) at /home/languitar/workspace/digiKam/utilities/setup/setup.cpp:404
#14 0x00000000004aff40 in Digikam::Setup::qt_metacall (this=0x2b7eea0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=<value optimized out>)
    at /home/languitar/workspace/build/digiKam/digikam/setup.moc:72
#15 0x00007f6ad79264df in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#16 0x00007f6ad968efc8 in KDialog::slotButtonClicked(int) () from /usr/lib/libkdeui.so.5
#17 0x00007f6ad9690be9 in KDialog::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkdeui.so.5
#18 0x00007f6ad9756c50 in KPageDialog::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkdeui.so.5
#19 0x00000000004aff28 in Digikam::Setup::qt_metacall (this=0x2053640, _c=QMetaObject::CreateInstance, _id=199, _a=0xffffffffffffffff)
    at /home/languitar/workspace/build/digiKam/digikam/setup.moc:67
#20 0x00007f6ad79264df in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#21 0x00007f6ad792b7fe in QSignalMapper::mapped(int) () from /usr/lib/libQtCore.so.4
#22 0x00007f6ad792ca12 in QSignalMapper::map(QObject*) () from /usr/lib/libQtCore.so.4
#23 0x00007f6ad792cc90 in QSignalMapper::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libQtCore.so.4
#24 0x00007f6ad79264df in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#25 0x00007f6ad8e6a042 in QAbstractButton::clicked(bool) () from /usr/lib/libQtGui.so.4
#26 0x00007f6ad8b8430b in ?? () from /usr/lib/libQtGui.so.4
#27 0x00007f6ad8b851cb in ?? () from /usr/lib/libQtGui.so.4
#28 0x00007f6ad8b8543c in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () from /usr/lib/libQtGui.so.4
#29 0x00007f6ad88279b2 in QWidget::event(QEvent*) () from /usr/lib/libQtGui.so.4
#30 0x00007f6ad87d15ec in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#31 0x00007f6ad87d83bb in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#32 0x00007f6ad971e256 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#33 0x00007f6ad791379c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#34 0x00007f6ad87d758e in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) ()
   from /usr/lib/libQtGui.so.4
#35 0x00007f6ad8856fab in ?? () from /usr/lib/libQtGui.so.4
#36 0x00007f6ad8855cba in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib/libQtGui.so.4
---Type <return> to continue, or q <return> to quit---
#37 0x00007f6ad8880172 in ?? () from /usr/lib/libQtGui.so.4
#38 0x00007f6ad3394da2 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#39 0x00007f6ad3398c18 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#40 0x00007f6ad3398dcc in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#41 0x00007f6ad793cc13 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#42 0x00007f6ad887fd6e in ?? () from /usr/lib/libQtGui.so.4
#43 0x00007f6ad79120c2 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#44 0x00007f6ad791249c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#45 0x00007f6ad8c98f5e in QDialog::exec() () from /usr/lib/libQtGui.so.4
#46 0x00000000004aeae4 in Digikam::Setup::exec (parent=0x1cdc2d0, page=Digikam::Setup::LastPageUsed)
    at /home/languitar/workspace/digiKam/utilities/setup/setup.cpp:351
#47 0x000000000060b4df in Digikam::DigikamApp::qt_metacall (this=0x1cdc2d0, _c=QMetaObject::InvokeMetaMethod, _id=-516, _a=0x7fff90d524f0)
    at /home/languitar/workspace/build/digiKam/digikam/digikamapp.moc:224
#48 0x00007f6ad79264df in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#49 0x00007f6ad87cb4e2 in QAction::triggered(bool) () from /usr/lib/libQtGui.so.4
#50 0x00007f6ad87cd55b in QAction::activate(QAction::ActionEvent) () from /usr/lib/libQtGui.so.4
#51 0x00007f6ad8c09e4d in ?? () from /usr/lib/libQtGui.so.4
#52 0x00007f6ad8c0f9da in ?? () from /usr/lib/libQtGui.so.4
#53 0x00007f6ad97f9ffe in KMenu::mouseReleaseEvent(QMouseEvent*) () from /usr/lib/libkdeui.so.5
#54 0x00007f6ad88279b2 in QWidget::event(QEvent*) () from /usr/lib/libQtGui.so.4
#55 0x00007f6ad8c11b9b in QMenu::event(QEvent*) () from /usr/lib/libQtGui.so.4
#56 0x00007f6ad87d15ec in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#57 0x00007f6ad87d83bb in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#58 0x00007f6ad971e256 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#59 0x00007f6ad791379c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#60 0x00007f6ad87d758e in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) ()
   from /usr/lib/libQtGui.so.4
#61 0x00007f6ad88573f5 in ?? () from /usr/lib/libQtGui.so.4
#62 0x00007f6ad8855cba in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib/libQtGui.so.4
#63 0x00007f6ad8880172 in ?? () from /usr/lib/libQtGui.so.4
#64 0x00007f6ad3394da2 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#65 0x00007f6ad3398c18 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#66 0x00007f6ad3398dcc in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#67 0x00007f6ad793cc13 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#68 0x00007f6ad887fd6e in ?? () from /usr/lib/libQtGui.so.4
#69 0x00007f6ad79120c2 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#70 0x00007f6ad791249c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#71 0x00007f6ad79161db in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#72 0x00000000006ab30c in main (argc=<value optimized out>, argv=<value optimized out>) at /home/languitar/workspace/digiKam/digikam/main.cpp:196

I could stop the settings dialog with cancel. A second try results in this crash:

Application: digiKam (digikam), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f6ade0a67c0 (LWP 6545))]

Thread 16 (Thread 0x7f6ac7e77710 (LWP 6549)):
#0  0x00007f6ad759b10c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f6ad782011b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#2  0x000000000065157c in Digikam::ScanController::run (this=0x1d0dfd0) at /home/languitar/workspace/digiKam/digikam/scancontroller.cpp:516
#3  0x00007f6ad781f155 in ?? () from /usr/lib/libQtCore.so.4
#4  0x00007f6ad759688a in start_thread () from /lib/libpthread.so.0
#5  0x00007f6ad68e59ed in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 15 (Thread 0x7f6ac7676710 (LWP 6559)):
#0  0x00007f6ad68dd1c3 in poll () from /lib/libc.so.6
#1  0x00007f6ad3398979 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#2  0x00007f6ad3398dcc in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#3  0x00007f6ad793cc66 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#4  0x00007f6ad79120c2 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#5  0x00007f6ad791249c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#6  0x00007f6ad781c759 in QThread::exec() () from /usr/lib/libQtCore.so.4
#7  0x00007f6ad781f155 in ?? () from /usr/lib/libQtCore.so.4
#8  0x00007f6ad759688a in start_thread () from /lib/libpthread.so.0
#9  0x00007f6ad68e59ed in clone () from /lib/libc.so.6
#10 0x0000000000000000 in ?? ()

Thread 14 (Thread 0x7f6ac6653710 (LWP 6560)):
#0  0x00007f6ad33983a5 in g_main_context_prepare () from /usr/lib/libglib-2.0.so.0
#1  0x00007f6ad33987e8 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#2  0x00007f6ad3398dcc in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#3  0x00007f6ad793cc66 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#4  0x00007f6ad79120c2 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#5  0x00007f6ad791249c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#6  0x00007f6ad781c759 in QThread::exec() () from /usr/lib/libQtCore.so.4
#7  0x00007f6ad781f155 in ?? () from /usr/lib/libQtCore.so.4
#8  0x00007f6ad759688a in start_thread () from /lib/libpthread.so.0
#9  0x00007f6ad68e59ed in clone () from /lib/libc.so.6
#10 0x0000000000000000 in ?? ()

Thread 13 (Thread 0x7f6ac5d2e710 (LWP 6561)):
#0  0x00007f6ad759b10c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f6ad782011b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#2  0x00007f6adb117f42 in Digikam::LoadSaveThread::run (this=0x206d4d0) at /home/languitar/workspace/digiKam/libs/threadimageio/loadsavethread.cpp:131
#3  0x00007f6ad781f155 in ?? () from /usr/lib/libQtCore.so.4
#4  0x00007f6ad759688a in start_thread () from /lib/libpthread.so.0
#5  0x00007f6ad68e59ed in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 12 (Thread 0x7f6ac552d710 (LWP 6562)):
#0  0x00007f6ad793c8b3 in ?? () from /usr/lib/libQtCore.so.4
#1  0x00007f6ad3398381 in g_main_context_prepare () from /usr/lib/libglib-2.0.so.0
#2  0x00007f6ad33987e8 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#3  0x00007f6ad3398dcc in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#4  0x00007f6ad793cc66 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#5  0x00007f6ad79120c2 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#6  0x00007f6ad791249c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#7  0x00007f6ad781c759 in QThread::exec() () from /usr/lib/libQtCore.so.4
#8  0x00007f6ad781f155 in ?? () from /usr/lib/libQtCore.so.4
#9  0x00007f6ad759688a in start_thread () from /lib/libpthread.so.0
#10 0x00007f6ad68e59ed in clone () from /lib/libc.so.6
#11 0x0000000000000000 in ?? ()

Thread 11 (Thread 0x7f6ac4d2c710 (LWP 6563)):
#0  0x00007f6ad68dd1c3 in poll () from /lib/libc.so.6
#1  0x00007f6ad3398979 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#2  0x00007f6ad3398dcc in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#3  0x00007f6ad793cc66 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#4  0x00007f6ad79120c2 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#5  0x00007f6ad791249c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#6  0x00007f6ad781c759 in QThread::exec() () from /usr/lib/libQtCore.so.4
#7  0x00007f6ad781f155 in ?? () from /usr/lib/libQtCore.so.4
#8  0x00007f6ad759688a in start_thread () from /lib/libpthread.so.0
#9  0x00007f6ad68e59ed in clone () from /lib/libc.so.6
#10 0x0000000000000000 in ?? ()

Thread 10 (Thread 0x7f6ab9005710 (LWP 6564)):
#0  0x00007f6ad759b479 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f6abe572af1 in metronom_sync_loop () from /usr/lib/libxine.so.1
#2  0x00007f6ad759688a in start_thread () from /lib/libpthread.so.0
#3  0x00007f6ad68e59ed in clone () from /lib/libc.so.6
#4  0x0000000000000000 in ?? ()

Thread 9 (Thread 0x7f6ab7594710 (LWP 6565)):
#0  0x00007f6ad68df233 in select () from /lib/libc.so.6
#1  0x00007f6abe59aa65 in xine_usec_sleep () from /usr/lib/libxine.so.1
#2  0x00007f6abe580499 in video_out_loop () from /usr/lib/libxine.so.1
#3  0x00007f6ad759688a in start_thread () from /lib/libpthread.so.0
#4  0x00007f6ad68e59ed in clone () from /lib/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 8 (Thread 0x7f6ab6d93710 (LWP 6566)):
#0  0x00007f6ad3397ebd in g_main_context_check () from /usr/lib/libglib-2.0.so.0
#1  0x00007f6ad3398993 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#2  0x00007f6ad3398dcc in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#3  0x00007f6ad793cc66 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#4  0x00007f6ad79120c2 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#5  0x00007f6ad791249c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#6  0x00007f6ad781c759 in QThread::exec() () from /usr/lib/libQtCore.so.4
#7  0x00007f6abe7cb7c6 in Phonon::Xine::XineThread::run() () from /usr/lib/kde4/plugins/phonon_backend/phonon_xine.so
#8  0x00007f6ad781f155 in ?? () from /usr/lib/libQtCore.so.4
#9  0x00007f6ad759688a in start_thread () from /lib/libpthread.so.0
#10 0x00007f6ad68e59ed in clone () from /lib/libc.so.6
#11 0x0000000000000000 in ?? ()

Thread 7 (Thread 0x7f6ab6389710 (LWP 6569)):
#0  0x00007f6ad68dd1c3 in poll () from /lib/libc.so.6
#1  0x00007f6ab638f7ae in ao_alsa_handle_event_thread () from /usr/lib/xine/plugins/1.28/xineplug_ao_out_alsa.so
#2  0x00007f6ad759688a in start_thread () from /lib/libpthread.so.0
#3  0x00007f6ad68e59ed in clone () from /lib/libc.so.6
#4  0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7f6ab5b88710 (LWP 6570)):
#0  0x00007f6ad759b10c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f6abe5835fb in ao_loop () from /usr/lib/libxine.so.1
#2  0x00007f6ad759688a in start_thread () from /lib/libpthread.so.0
#3  0x00007f6ad68e59ed in clone () from /lib/libc.so.6
#4  0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7f6ab3901710 (LWP 6571)):
#0  0x00007f6ad759b10c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f6ad782011b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#2  0x00007f6adb117f42 in Digikam::LoadSaveThread::run (this=0x281af60) at /home/languitar/workspace/digiKam/libs/threadimageio/loadsavethread.cpp:131
#3  0x00007f6ad781f155 in ?? () from /usr/lib/libQtCore.so.4
#4  0x00007f6ad759688a in start_thread () from /lib/libpthread.so.0
#5  0x00007f6ad68e59ed in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f6ab3100710 (LWP 6577)):
#0  0x00007f6ad759b10c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f6ad782011b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#2  0x00007f6adb117f42 in Digikam::LoadSaveThread::run (this=0x2f11ee0) at /home/languitar/workspace/digiKam/libs/threadimageio/loadsavethread.cpp:131
#3  0x00007f6ad781f155 in ?? () from /usr/lib/libQtCore.so.4
#4  0x00007f6ad759688a in start_thread () from /lib/libpthread.so.0
#5  0x00007f6ad68e59ed in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f6ab10fc710 (LWP 6578)):
#0  0x00007f6ad759b10c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f6ad782011b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#2  0x00007f6adb117f42 in Digikam::LoadSaveThread::run (this=0x2ffc350) at /home/languitar/workspace/digiKam/libs/threadimageio/loadsavethread.cpp:131
#3  0x00007f6ad781f155 in ?? () from /usr/lib/libQtCore.so.4
#4  0x00007f6ad759688a in start_thread () from /lib/libpthread.so.0
#5  0x00007f6ad68e59ed in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f6aab7fe710 (LWP 6639)):
#0  0x00007f6ad759b10c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f6ad782011b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#2  0x00007f6adb117f42 in Digikam::LoadSaveThread::run (this=0x2f396f0) at /home/languitar/workspace/digiKam/libs/threadimageio/loadsavethread.cpp:131
#3  0x00007f6ad781f155 in ?? () from /usr/lib/libQtCore.so.4
#4  0x00007f6ad759688a in start_thread () from /lib/libpthread.so.0
#5  0x00007f6ad68e59ed in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f6ade0a67c0 (LWP 6545)):
[KCrash Handler]
#5  Digikam::Album::lastChild (this=0x0) at /home/languitar/workspace/digiKam/digikam/album.cpp:85
#6  0x00000000005c357d in Digikam::AlbumManager::slotDatesJobData (this=0x1d029c0, data=<value optimized out>) at /home/languitar/workspace/digiKam/digikam/albummanager.cpp:2805
#7  0x00000000005c8be3 in Digikam::AlbumManager::qt_metacall (this=0x1d029c0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff90d52d40)
    at /home/languitar/workspace/build/digiKam/digikam/albummanager.moc:175
#8  0x00007f6ad79264df in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#9  0x00007f6ad9c1aa24 in KIO::TransferJob::data(KIO::Job*, QByteArray const&) () from /usr/lib/libkio.so.5
#10 0x00007f6ad9c1d240 in KIO::TransferJob::slotData(QByteArray const&) () from /usr/lib/libkio.so.5
#11 0x00007f6ad9c20906 in KIO::TransferJob::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkio.so.5
#12 0x00007f6ad79264df in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#13 0x00007f6ad9cdef62 in KIO::SlaveInterface::data(QByteArray const&) () from /usr/lib/libkio.so.5
#14 0x00007f6ad9ce1f50 in KIO::SlaveInterface::dispatch(int, QByteArray const&) () from /usr/lib/libkio.so.5
#15 0x00007f6ad9cdf213 in KIO::SlaveInterface::dispatch() () from /usr/lib/libkio.so.5
#16 0x00007f6ad9cd3686 in KIO::Slave::gotInput() () from /usr/lib/libkio.so.5
#17 0x00007f6ad9cd386c in KIO::Slave::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkio.so.5
#18 0x00007f6ad79264df in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#19 0x00007f6ad9bf17c7 in KIO::ConnectionPrivate::dequeue() () from /usr/lib/libkio.so.5
#20 0x00007f6ad9bf18ed in KIO::Connection::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkio.so.5
#21 0x00007f6ad7923419 in QObject::event(QEvent*) () from /usr/lib/libQtCore.so.4
#22 0x00007f6ad87d15ec in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#23 0x00007f6ad87d7bdb in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#24 0x00007f6ad971e256 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#25 0x00007f6ad791379c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#26 0x00007f6ad7915f17 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/libQtCore.so.4
#27 0x00007f6ad793d0d3 in ?? () from /usr/lib/libQtCore.so.4
#28 0x00007f6ad3394da2 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#29 0x00007f6ad3398c18 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#30 0x00007f6ad3398dcc in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#31 0x00007f6ad793cc13 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#32 0x00007f6ad887fd6e in ?? () from /usr/lib/libQtGui.so.4
#33 0x00007f6ad79120c2 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#34 0x00007f6ad791249c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#35 0x00007f6ad79161db in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#36 0x00000000006ab30c in main (argc=<value optimized out>, argv=<value optimized out>) at /home/languitar/workspace/digiKam/digikam/main.cpp:196

Comment 1 Johannes Wienke 2010-04-08 20:30:56 UTC

Notice that there are two backtraces in my report. One of a deadlock or something like that and one crash resulting from this.

Comment 2 Andi Clemens 2010-05-01 08:37:45 UTC

Same can be confirmed when just switching from one sqlite database to another. After a restart, most of the time the new database has been loaded though.

Comment 3 caulier.gilles 2010-05-03 08:43:19 UTC

I confirm this dysfunction here too...

Gilles Caulier

Comment 4 Andi Clemens 2010-05-03 22:33:10 UTC

I also confirm this when running the albummodel unit test

Comment 5 Marcel Wiesweg 2010-06-04 20:25:32 UTC

Switching between SQLite databases works for me now. Is this bug still valid?

Comment 6 Johannes Wienke 2010-06-04 20:40:09 UTC

Will check this later.

Comment 7 Johannes Wienke 2010-06-06 02:12:01 UTC

Can't reproduce this now.