[Digikam-devel] [Bug 209729] Crash while drag and drop

Jonathan Verner jonathan.verner at gmail.com
Tue Sep 7 14:09:59 BST 2010 

https://bugs.kde.org/show_bug.cgi?id=209729


Jonathan Verner <jonathan.verner at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jonathan.verner at gmail.com




--- Comment #7 from Jonathan Verner <jonathan verner gmail com>  2010-09-07 15:09:55 ---
I can reproduce it with digikam 1.4.0 and KDE 4.5.1. When doing drag-and-drop
to inkscape (possibly also other apps, not tested) AND using Alt-Tab, digikam
crashes when I release the Alt-Tab key with the backtrace shown below. When
doing just drag-and-drop without the Alt-Tab switching, everything works fine.
Also, when I disable desktop effects, everything works fine, which would seem
to indicate a qt bug (see comment #3)

This is the output from digikam:

xdndHandleBadwindow returned true
QSocketNotifier: Invalid socket 36 and type 'Read', disabling...
QSocketNotifier: Invalid socket 39 and type 'Read', disabling...
QSocketNotifier: Invalid socket 42 and type 'Read', disabling...

This is the backtrace:
Application: digiKam (digikam), signal: Segmentation fault
[Current thread is 1 (Thread 0xb65b6740 (LWP 7801))]

Thread 15 (Thread 0xb4476b70 (LWP 7802)):
#0  0x00b90422 in __kernel_vsyscall ()
#1  0x00ad1015 in pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:122
#2  0x0199db07 in QWaitCondition::wait(QMutex*, unsigned long) () from
/usr/lib/libQtCore.so.4
#3  0x08332054 in ?? ()
#4  0x0199cf39 in ?? () from /usr/lib/libQtCore.so.4
#5  0x00acc96e in start_thread (arg=0xb4476b70) at pthread_create.c:300
#6  0x01d94a4e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 14 (Thread 0xb3c75b70 (LWP 7806)):
#0  0x03c4292d in g_main_context_prepare () from /lib/libglib-2.0.so.0
#1  0x03c42c99 in ?? () from /lib/libglib-2.0.so.0
#2  0x03c43268 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#3  0x01acc82f in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/libQtCore.so.4
#4  0x01a9ca99 in
QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/libQtCore.so.4
#5  0x01a9cf1a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/libQtCore.so.4
#6  0x01999c5e in QThread::exec() () from /usr/lib/libQtCore.so.4
#7  0x0042ef1d in ?? () from /usr/lib/libdigikamdatabase.so.1
#8  0x0199cf39 in ?? () from /usr/lib/libQtCore.so.4
#9  0x00acc96e in start_thread (arg=0xb3c75b70) at pthread_create.c:300
#10 0x01d94a4e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 13 (Thread 0xb3474b70 (LWP 7807)):
#0  0x00acef5b in __pthread_mutex_lock (mutex=0x8869404) at
pthread_mutex_lock.c:61
#1  0x03c4324e in g_main_context_iteration () from /lib/libglib-2.0.so.0
#2  0x01acc82f in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/libQtCore.so.4
#3  0x01a9ca99 in
QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/libQtCore.so.4
#4  0x01a9cf1a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/libQtCore.so.4
#5  0x01999c5e in QThread::exec() () from /usr/lib/libQtCore.so.4
#6  0x0042ef1d in ?? () from /usr/lib/libdigikamdatabase.so.1
#7  0x0199cf39 in ?? () from /usr/lib/libQtCore.so.4
#8  0x00acc96e in start_thread (arg=0xb3474b70) at pthread_create.c:300
#9  0x01d94a4e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 12 (Thread 0xb1cd3b70 (LWP 7808)):
#0  0x00b90422 in __kernel_vsyscall ()
#1  0x00ad1015 in pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:122
#2  0x0199db07 in QWaitCondition::wait(QMutex*, unsigned long) () from
/usr/lib/libQtCore.so.4
#3  0x014bd3ba in ?? () from /usr/lib/libdigikamcore.so.1
#4  0x0199cf39 in ?? () from /usr/lib/libQtCore.so.4
#5  0x00acc96e in start_thread (arg=0xb1cd3b70) at pthread_create.c:300
#6  0x01d94a4e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 11 (Thread 0xb14d2b70 (LWP 7809)):
#0  0x00ad0344 in __pthread_mutex_unlock_usercnt (mutex=0x8a66f7c, decr=<value
optimized out>) at pthread_mutex_unlock.c:52
#1  0x03c42544 in g_main_context_check () from /lib/libglib-2.0.so.0
#2  0x03c42e7e in ?? () from /lib/libglib-2.0.so.0
#3  0x03c43268 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#4  0x01acc82f in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/libQtCore.so.4
#5  0x01a9ca99 in
QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/libQtCore.so.4
#6  0x01a9cf1a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/libQtCore.so.4
#7  0x01999c5e in QThread::exec() () from /usr/lib/libQtCore.so.4
#8  0x0199cf39 in ?? () from /usr/lib/libQtCore.so.4
#9  0x00acc96e in start_thread (arg=0xb14d2b70) at pthread_create.c:300
#10 0x01d94a4e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 10 (Thread 0xb0cd1b70 (LWP 7810)):
#0  __pthread_mutex_unlock (mutex=0x882b374) at pthread_mutex_unlock.c:289
#1  0x03c42868 in g_main_context_prepare () from /lib/libglib-2.0.so.0
#2  0x03c42c99 in ?? () from /lib/libglib-2.0.so.0
#3  0x03c43268 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#4  0x01acc82f in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/libQtCore.so.4
#5  0x01a9ca99 in
QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/libQtCore.so.4
#6  0x01a9cf1a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/libQtCore.so.4
#7  0x01999c5e in QThread::exec() () from /usr/lib/libQtCore.so.4
#8  0x0199cf39 in ?? () from /usr/lib/libQtCore.so.4
#9  0x00acc96e in start_thread (arg=0xb0cd1b70) at pthread_create.c:300
#10 0x01d94a4e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 9 (Thread 0xadcaeb70 (LWP 7812)):
#0  0x00b90422 in __kernel_vsyscall ()
#1  0x00ad1342 in pthread_cond_timedwait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_timedwait.S:179
#2  0x08516ce7 in ?? () from /usr/lib/libxine.so.1
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 8 (Thread 0xad0a2b70 (LWP 7813)):
#0  0x00b90422 in __kernel_vsyscall ()
#1  0x01d8d971 in select () at ../sysdeps/unix/syscall-template.S:82
#2  0x085405cc in xine_usec_sleep () from /usr/lib/libxine.so.1
#3  0x00000000 in ?? ()

Thread 7 (Thread 0xac8a1b70 (LWP 7814)):
#0  0x00b90422 in __kernel_vsyscall ()
#1  0x01d86b86 in *__GI___poll (fds=0x1e1cff4, nfds=1, timeout=-1) at
../sysdeps/unix/sysv/linux/poll.c:87
#2  0x03c504db in g_poll () from /lib/libglib-2.0.so.0
#3  0x03c42e5c in ?? () from /lib/libglib-2.0.so.0
#4  0x03c43268 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#5  0x01acc82f in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/libQtCore.so.4
#6  0x01a9ca99 in
QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/libQtCore.so.4
#7  0x01a9cf1a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/libQtCore.so.4
#8  0x01999c5e in QThread::exec() () from /usr/lib/libQtCore.so.4
#9  0x0340d81a in ?? () from /usr/lib/qt4/plugins/phonon_backend/phonon_xine.so
#10 0x0199cf39 in ?? () from /usr/lib/libQtCore.so.4
#11 0x00acc96e in start_thread (arg=0xac8a1b70) at pthread_create.c:300
#12 0x01d94a4e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 6 (Thread 0xac0a0b70 (LWP 7817)):
#0  0x00b90422 in __kernel_vsyscall ()
#1  0x01d86b86 in *__GI___poll (fds=0x1e1cff4, nfds=1, timeout=333) at
../sysdeps/unix/sysv/linux/poll.c:87
#2  0x0399aa8f in ?? () from /usr/lib/xine/plugins/1.27/xineplug_ao_out_alsa.so
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 5 (Thread 0xab89fb70 (LWP 7818)):
#0  0x00b90422 in __kernel_vsyscall ()
#1  0x00ad1015 in pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:122
#2  0x085279ee in ?? () from /usr/lib/libxine.so.1
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 4 (Thread 0xab09eb70 (LWP 7819)):
#0  0x01243e16 in *__GI_clock_gettime (clock_id=19169268, tp=0xab09df60) at
../sysdeps/unix/clock_gettime.c:100
#1  0x019f848b in ?? () from /usr/lib/libQtCore.so.4
#2  0x01ace965 in ?? () from /usr/lib/libQtCore.so.4
#3  0x01ace9aa in ?? () from /usr/lib/libQtCore.so.4
#4  0x01acca38 in ?? () from /usr/lib/libQtCore.so.4
#5  0x01accac5 in ?? () from /usr/lib/libQtCore.so.4
#6  0x03c4287a in g_main_context_prepare () from /lib/libglib-2.0.so.0
#7  0x03c42c99 in ?? () from /lib/libglib-2.0.so.0
#8  0x03c43268 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#9  0x01acc82f in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/libQtCore.so.4
#10 0x01a9ca99 in
QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/libQtCore.so.4
#11 0x01a9cf1a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/libQtCore.so.4
#12 0x01999c5e in QThread::exec() () from /usr/lib/libQtCore.so.4
#13 0x01a7b9ab in ?? () from /usr/lib/libQtCore.so.4
#14 0x0199cf39 in ?? () from /usr/lib/libQtCore.so.4
#15 0x00acc96e in start_thread (arg=0xab09eb70) at pthread_create.c:300
#16 0x01d94a4e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 3 (Thread 0xaa7bdb70 (LWP 7826)):
#0  __i686.get_pc_thunk.bx () at
../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/sem_post.S:170
#1  0x00ad0319 in __pthread_mutex_unlock_usercnt (mutex=0xa50d0ac, decr=1) at
pthread_mutex_unlock.c:36
#2  0x03c42544 in g_main_context_check () from /lib/libglib-2.0.so.0
#3  0x03c42e7e in ?? () from /lib/libglib-2.0.so.0
#4  0x03c43268 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#5  0x01acc82f in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/libQtCore.so.4
#6  0x01a9ca99 in
QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/libQtCore.so.4
#7  0x01a9cf1a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/libQtCore.so.4
#8  0x01999c5e in QThread::exec() () from /usr/lib/libQtCore.so.4
#9  0x01a7b9ab in ?? () from /usr/lib/libQtCore.so.4
#10 0x0199cf39 in ?? () from /usr/lib/libQtCore.so.4
#11 0x00acc96e in start_thread (arg=0xaa7bdb70) at pthread_create.c:300
#12 0x01d94a4e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 2 (Thread 0xa9fbcb70 (LWP 7836)):
#0  0x00b90422 in __kernel_vsyscall ()
#1  0x01d86b86 in *__GI___poll (fds=0x1e1cff4, nfds=1, timeout=-1) at
../sysdeps/unix/sysv/linux/poll.c:87
#2  0x03c504db in g_poll () from /lib/libglib-2.0.so.0
#3  0x03c42e5c in ?? () from /lib/libglib-2.0.so.0
#4  0x03c43268 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#5  0x01acc82f in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/libQtCore.so.4
#6  0x01a9ca99 in
QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/libQtCore.so.4
#7  0x01a9cf1a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/libQtCore.so.4
#8  0x01999c5e in QThread::exec() () from /usr/lib/libQtCore.so.4
#9  0x01a7b9ab in ?? () from /usr/lib/libQtCore.so.4
#10 0x0199cf39 in ?? () from /usr/lib/libQtCore.so.4
#11 0x00acc96e in start_thread (arg=0xa9fbcb70) at pthread_create.c:300
#12 0x01d94a4e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 1 (Thread 0xb65b6740 (LWP 7801)):
[KCrash Handler]
#7  0x022d206f in QWidget::testAttribute_helper(Qt::WidgetAttribute) const ()
from /usr/lib/libQtGui.so.4
#8  0x043b5a9a in KApplication::notify(QObject*, QEvent*) () from
/usr/lib/libkdeui.so.5
#9  0x01a9dfeb in QCoreApplication::notifyInternal(QObject*, QEvent*) () from
/usr/lib/libQtCore.so.4
#10 0x02286812 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*,
QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () from
/usr/lib/libQtGui.so.4
#11 0x023150d8 in ?? () from /usr/lib/libQtGui.so.4
#12 0x02314569 in QApplication::x11ProcessEvent(_XEvent*) () from
/usr/lib/libQtGui.so.4
#13 0x0234356a in ?? () from /usr/lib/libQtGui.so.4
#14 0x03c3f265 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#15 0x03c43088 in ?? () from /lib/libglib-2.0.so.0
#16 0x03c43268 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#17 0x01acc7f5 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/libQtCore.so.4
#18 0x02342de5 in ?? () from /usr/lib/libQtGui.so.4
#19 0x01a9ca99 in
QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/libQtCore.so.4
#20 0x01a9cf1a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/libQtCore.so.4
#21 0x02328887 in ?? () from /usr/lib/libQtGui.so.4
#22 0x022993ee in QDrag::exec(QFlags<Qt::DropAction>, Qt::DropAction) () from
/usr/lib/libQtGui.so.4
#23 0x014d27a2 in Digikam::DCategorizedView::startDrag(QFlags<Qt::DropAction>)
() from /usr/lib/libdigikamcore.so.1
#24 0x02852bca in QAbstractItemView::mouseMoveEvent(QMouseEvent*) () from
/usr/lib/libQtGui.so.4
#25 0x0286ceda in QListView::mouseMoveEvent(QMouseEvent*) () from
/usr/lib/libQtGui.so.4
#26 0x01500af9 in KCategorizedView::mouseMoveEvent(QMouseEvent*) () from
/usr/lib/libdigikamcore.so.1
#27 0x014cf5b7 in Digikam::DCategorizedView::mouseMoveEvent(QMouseEvent*) ()
from /usr/lib/libdigikamcore.so.1
#28 0x022df1aa in QWidget::event(QEvent*) () from /usr/lib/libQtGui.so.4
#29 0x026fefb3 in QFrame::event(QEvent*) () from /usr/lib/libQtGui.so.4
#30 0x0279be42 in QAbstractScrollArea::viewportEvent(QEvent*) () from
/usr/lib/libQtGui.so.4
#31 0x02857957 in QAbstractItemView::viewportEvent(QEvent*) () from
/usr/lib/libQtGui.so.4
#32 0x014d23ad in Digikam::DCategorizedView::viewportEvent(QEvent*) () from
/usr/lib/libdigikamcore.so.1
#33 0x0279e885 in ?? () from /usr/lib/libQtGui.so.4
#34 0x01a9d74a in
QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) ()
from /usr/lib/libQtCore.so.4
#35 0x02281759 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from
/usr/lib/libQtGui.so.4
#36 0x02288167 in QApplication::notify(QObject*, QEvent*) () from
/usr/lib/libQtGui.so.4
#37 0x043b5a9a in KApplication::notify(QObject*, QEvent*) () from
/usr/lib/libkdeui.so.5
#38 0x01a9dfeb in QCoreApplication::notifyInternal(QObject*, QEvent*) () from
/usr/lib/libQtCore.so.4
#39 0x02286812 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*,
QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () from
/usr/lib/libQtGui.so.4
#40 0x023150d8 in ?? () from /usr/lib/libQtGui.so.4
#41 0x02314569 in QApplication::x11ProcessEvent(_XEvent*) () from
/usr/lib/libQtGui.so.4
#42 0x0234356a in ?? () from /usr/lib/libQtGui.so.4
#43 0x03c3f265 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#44 0x03c43088 in ?? () from /lib/libglib-2.0.so.0
#45 0x03c43268 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#46 0x01acc7f5 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/libQtCore.so.4
#47 0x02342de5 in ?? () from /usr/lib/libQtGui.so.4
#48 0x01a9ca99 in
QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/libQtCore.so.4
#49 0x01a9cf1a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/libQtCore.so.4
#50 0x01aa14cf in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#51 0x022805a7 in QApplication::exec() () from /usr/lib/libQtGui.so.4
#52 0x083bfa13 in ?? ()
#53 0x01cddbd6 in __libc_start_main (main=0x83bc840, argc=1, ubp_av=0xbfc7a364,
init=0x83c1cb0 <__libc_csu_init>, fini=0x83c1ca0 <__libc_csu_fini>,
rtld_fini=0x6990c0 <_dl_fini>, 
    stack_end=0xbfc7a35c) at libc-start.c:226
#54 0x080aa1b1 in _start ()

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