[Kget] [Bug 291834] New: KGet crash when several dialog boxes are being dealt with.

Matthew Dawson matthew at mjdsystems.ca
Wed Jan 18 05:46:48 UTC 2012 

https://bugs.kde.org/show_bug.cgi?id=291834

           Summary: KGet crash when several dialog boxes are being dealt
                    with.
           Product: kget
           Version: unspecified
          Platform: Gentoo Packages
        OS/Version: Linux
            Status: NEW
          Severity: crash
          Priority: NOR
         Component: general
        AssignedTo: kget at kde.org
        ReportedBy: matthew at mjdsystems.ca


Application: kget (2.7.3)
KDE Platform Version: 4.7.3 (4.7.3)
Qt Version: 4.7.4
Operating System: Linux 3.2.1-gentoo x86_64
Distribution (Platform): Gentoo Packages

-- Information about the crash:
- What I was doing when the application crashed:

I was in the process of downloading several files, I accidentally started
redownloading some of them using http, when I meant to use a bittorrent link. 
Several replace file dialogs appeared.  Upon cancelling the first one, KGet
crashed with this backtrace.

Other things to note:

I also had several torrents running in the background.  They seemed to
significantly slow down KGet for no known reason, and made dealing with the
dialogs slow.  I don't know if that triggered some obscure timing bug.

-- Backtrace:
Application: KGet (kget), signal: Segmentation fault
82    T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
[Current thread is 1 (Thread 0x7fb85594b780 (LWP 11605))]

Thread 6 (Thread 0x7fb83d99d700 (LWP 11900)):
#0  0x00007fb850c9e8f3 in __GI___poll (fds=<optimized out>, nfds=<optimized
out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fb84c56b598 in g_main_context_poll (n_fds=1, fds=0x2565380,
timeout=-1, context=0x2522500, priority=<optimized out>) at gmain.c:3402
#2  g_main_context_iterate (context=0x2522500, block=<optimized out>,
dispatch=1, self=<optimized out>) at gmain.c:3084
#3  0x00007fb84c56ba1b in g_main_context_iteration (context=0x2522500,
may_block=1) at gmain.c:3152
#4  0x00007fb85255e6ae in QEventDispatcherGlib::processEvents (this=0x251af40,
flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007fb852532872 in QEventLoop::processEvents (this=<optimized out>,
flags=...) at kernel/qeventloop.cpp:149
#6  0x00007fb852532a9f in QEventLoop::exec (this=0x7fb83d99cdd0, flags=...) at
kernel/qeventloop.cpp:201
#7  0x00007fb8524499cf in QThread::exec (this=<optimized out>) at
thread/qthread.cpp:498
#8  0x00007fb85251571f in QInotifyFileSystemWatcherEngine::run (this=0x2536790)
at io/qfilesystemwatcher_inotify.cpp:248
#9  0x00007fb85244c425 in QThreadPrivate::start (arg=0x2536790) at
thread/qthread_unix.cpp:331
#10 0x00007fb85356ae9c in start_thread (arg=0x7fb83d99d700) at
pthread_create.c:301
#11 0x00007fb850ca742d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 5 (Thread 0x7fb8355fc700 (LWP 11912)):
#0  pthread_cond_wait () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fb85244b42b in QMutexPrivate::wait (this=0x24c4950, timeout=-1) at
thread/qmutex_unix.cpp:84
#2  0x00007fb852447b05 in QMutex::lock (this=0x24c4bf0) at
thread/qmutex.cpp:167
#3  0x00007fb83e10a770 in update (this=0x24c49d0) at
/usr/src/debug/net-libs/libktorrent-1.1.2/libktorrent-1.1.2/src/net/downloadthread.cpp:51
#4  net::DownloadThread::update (this=0x24c49d0) at
/usr/src/debug/net-libs/libktorrent-1.1.2/libktorrent-1.1.2/src/net/downloadthread.cpp:46
#5  0x00007fb83e10a969 in net::NetworkThread::run (this=0x24c49d0) at
/usr/src/debug/net-libs/libktorrent-1.1.2/libktorrent-1.1.2/src/net/networkthread.cpp:48
#6  0x00007fb85244c425 in QThreadPrivate::start (arg=0x24c49d0) at
thread/qthread_unix.cpp:331
#7  0x00007fb85356ae9c in start_thread (arg=0x7fb8355fc700) at
pthread_create.c:301
#8  0x00007fb850ca742d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 4 (Thread 0x7fb834dfb700 (LWP 11913)):
#0  operator++ (this=<synthetic pointer>) at
/usr/lib/gcc/x86_64-pc-linux-gnu/4.6.2/include/g++-v4/bits/stl_list.h:162
#1  update (this=0x24c5050) at
/usr/src/debug/net-libs/libktorrent-1.1.2/libktorrent-1.1.2/src/net/uploadthread.cpp:77
#2  net::UploadThread::update (this=0x24c5050) at
/usr/src/debug/net-libs/libktorrent-1.1.2/libktorrent-1.1.2/src/net/uploadthread.cpp:43
#3  0x00007fb83e10a969 in net::NetworkThread::run (this=0x24c5050) at
/usr/src/debug/net-libs/libktorrent-1.1.2/libktorrent-1.1.2/src/net/networkthread.cpp:48
#4  0x00007fb85244c425 in QThreadPrivate::start (arg=0x24c5050) at
thread/qthread_unix.cpp:331
#5  0x00007fb85356ae9c in start_thread (arg=0x7fb834dfb700) at
pthread_create.c:301
#6  0x00007fb850ca742d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 3 (Thread 0x7fb836c0c700 (LWP 11915)):
#0  pthread_cond_wait () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fb85244c8bb in wait (time=18446744073709551615, this=0x2a16870) at
thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2a17580,
time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007fb83e10d5e2 in net::ReverseResolverThread::run (this=0x2a17570) at
/usr/src/debug/net-libs/libktorrent-1.1.2/libktorrent-1.1.2/src/net/reverseresolver.cpp:123
#4  0x00007fb85244c425 in QThreadPrivate::start (arg=0x2a17570) at
thread/qthread_unix.cpp:331
#5  0x00007fb85356ae9c in start_thread (arg=0x7fb836c0c700) at
pthread_create.c:301
#6  0x00007fb850ca742d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 2 (Thread 0x7fb83d037700 (LWP 19237)):
#0  0x00007fb850c9e8f3 in __GI___poll (fds=<optimized out>, nfds=<optimized
out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fb84c56b598 in g_main_context_poll (n_fds=1, fds=0x324e830,
timeout=-1, context=0x34f5650, priority=<optimized out>) at gmain.c:3402
#2  g_main_context_iterate (context=0x34f5650, block=<optimized out>,
dispatch=1, self=<optimized out>) at gmain.c:3084
#3  0x00007fb84c56ba1b in g_main_context_iteration (context=0x34f5650,
may_block=1) at gmain.c:3152
#4  0x00007fb85255e6ae in QEventDispatcherGlib::processEvents (this=0x2a65c80,
flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007fb852532872 in QEventLoop::processEvents (this=<optimized out>,
flags=...) at kernel/qeventloop.cpp:149
#6  0x00007fb852532a9f in QEventLoop::exec (this=0x7fb83d036e00, flags=...) at
kernel/qeventloop.cpp:201
#7  0x00007fb8524499cf in QThread::exec (this=<optimized out>) at
thread/qthread.cpp:498
#8  0x00007fb85244c425 in QThreadPrivate::start (arg=0x7fb8380b2450) at
thread/qthread_unix.cpp:331
#9  0x00007fb85356ae9c in start_thread (arg=0x7fb83d037700) at
pthread_create.c:301
#10 0x00007fb850ca742d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 1 (Thread 0x7fb85594b780 (LWP 11605)):
[KCrash Handler]
#6  erase (it=..., this=0x25f1160) at /usr/include/qt4/QtCore/qhash.h:835
#7  NewTransferDialogHandler::handleUrls (this=0x25f1140, jobId=18) at
/usr/src/debug/kde-base/kget-4.7.3/kget-4.7.3/kget/ui/newtransferdialog.cpp:777
#8  0x0000000000454eab in NewTransferDialogHandler::slotMostLocalUrlResult
(this=0x25f1140, j=<optimized out>) at
/usr/src/debug/kde-base/kget-4.7.3/kget-4.7.3/kget/ui/newtransferdialog.cpp:591
#9  0x0000000000455516 in NewTransferDialogHandler::qt_metacall
(this=0x25f1140, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>,
_a=0x7fff3c6c3a90) at
/usr/src/debug/kde-base/kget-4.7.3/kget-4.7.3_build/kget/newtransferdialog.moc:140
#10 0x00007fb85254663a in QMetaObject::activate (sender=0x7fb8306fae60,
m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff3c6c3a90) at
kernel/qobject.cpp:3278
#11 0x00007fb852c2d7b2 in KJob::result (this=<optimized out>,
_t1=0x7fb8306fae60) at
/usr/src/debug/kde-base/kdelibs-4.7.3-r1/kdelibs-4.7.3_build/kdecore/kjob.moc:194
#12 0x00007fb852c2d7f0 in KJob::emitResult (this=0x7fb8306fae60) at
/usr/src/debug/kde-base/kdelibs-4.7.3-r1/kdelibs-4.7.3/kdecore/jobs/kjob.cpp:312
#13 0x00007fb854799665 in MostLocalUrlJob::start (this=0x7fb8306fae60) at
/usr/src/debug/kde-base/kget-4.7.3/kget-4.7.3/kget/core/mostlocalurl.cpp:79
#14 0x000000000044f88b in NewTransferDialogHandler::showNewTransferDialog
(urls=<optimized out>) at
/usr/src/debug/kde-base/kget-4.7.3/kget-4.7.3/kget/ui/newtransferdialog.cpp:572
#15 0x00000000004b84b4 in KGetApp::newInstance (this=0x7fff3c6c4ff0) at
/usr/src/debug/kde-base/kget-4.7.3/kget-4.7.3/kget/main.cpp:110
#16 0x00007fb85534fe31 in KUniqueApplicationAdaptor::newInstance
(this=0x245ee10, asn_id=<optimized out>, args=...) at
/usr/src/debug/kde-base/kdelibs-4.7.3-r1/kdelibs-4.7.3/kdeui/kernel/kuniqueapplication.cpp:442
#17 0x00007fb85534fec6 in KUniqueApplicationAdaptor::qt_metacall
(this=0x245ee10, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0x7fff3c6c4160) at
/usr/src/debug/kde-base/kdelibs-4.7.3-r1/kdelibs-4.7.3_build/kdeui/kuniqueapplication_p.moc:81
#18 0x00007fb85288e7d9 in QDBusConnectionPrivate::deliverCall (this=0x22e01f0,
object=0x245ee10, msg=..., metaTypes=..., slotIdx=4) at qdbusintegrator.cpp:942
#19 0x00007fb85288f915 in QDBusConnectionPrivate::activateCall (this=0x22e01f0,
object=0x245ee10, flags=337, msg=...) at qdbusintegrator.cpp:852
#20 0x00007fb8528901e9 in QDBusConnectionPrivate::activateObject
(this=0x22e01f0, node=..., msg=..., pathStartPos=<optimized out>) at
qdbusintegrator.cpp:1410
#21 0x00007fb8528902d8 in QDBusActivateObjectEvent::placeMetaCall
(this=0x315b6f0) at qdbusintegrator.cpp:1524
#22 0x00007fb85254a162 in QObject::event (this=0x7fff3c6c4ff0, e=<optimized
out>) at kernel/qobject.cpp:1217
#23 0x00007fb8518d6363 in QApplication::event (this=0x7fff3c6c4ff0,
e=0x315b6f0) at kernel/qapplication.cpp:2522
#24 0x00007fb8518d2514 in notify_helper (e=0x315b6f0, receiver=0x7fff3c6c4ff0,
this=0x22f3e80) at kernel/qapplication.cpp:4481
#25 QApplicationPrivate::notify_helper (this=0x22f3e80,
receiver=0x7fff3c6c4ff0, e=0x315b6f0) at kernel/qapplication.cpp:4453
#26 0x00007fb8518d7341 in QApplication::notify (this=0x7fff3c6c4ff0,
receiver=0x7fff3c6c4ff0, e=0x315b6f0) at kernel/qapplication.cpp:4360
#27 0x00007fb85534a0a8 in KApplication::notify (this=0x7fff3c6c4ff0,
receiver=0x7fff3c6c4ff0, event=0x315b6f0) at
/usr/src/debug/kde-base/kdelibs-4.7.3-r1/kdelibs-4.7.3/kdeui/kernel/kapplication.cpp:311
#28 0x00007fb85253370b in QCoreApplication::notifyInternal
(this=0x7fff3c6c4ff0, receiver=0x7fff3c6c4ff0, event=0x315b6f0) at
kernel/qcoreapplication.cpp:787
#29 0x00007fb852536b07 in sendEvent (event=0x315b6f0, receiver=0x7fff3c6c4ff0)
at kernel/qcoreapplication.h:215
#30 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0,
data=0x22979e0) at kernel/qcoreapplication.cpp:1428
#31 0x00007fb85255e233 in sendPostedEvents () at kernel/qcoreapplication.h:220
#32 postEventSourceDispatch (s=0x22f7920) at
kernel/qeventdispatcher_glib.cpp:277
#33 0x00007fb84c56b07c in g_main_dispatch (context=0x22ecec0) at gmain.c:2441
#34 g_main_context_dispatch (context=0x22ecec0) at gmain.c:3011
#35 0x00007fb84c56b870 in g_main_context_iterate (context=0x22ecec0,
block=<optimized out>, dispatch=1, self=<optimized out>) at gmain.c:3089
#36 0x00007fb84c56ba1b in g_main_context_iteration (context=0x22ecec0,
may_block=1) at gmain.c:3152
#37 0x00007fb85255e656 in QEventDispatcherGlib::processEvents (this=0x22975e0,
flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#38 0x00007fb851976986 in QGuiEventDispatcherGlib::processEvents
(this=<optimized out>, flags=<optimized out>) at
kernel/qguieventdispatcher_glib.cpp:204
#39 0x00007fb852532872 in QEventLoop::processEvents (this=<optimized out>,
flags=...) at kernel/qeventloop.cpp:149
#40 0x00007fb852532a9f in QEventLoop::exec (this=0x7fff3c6c4f70, flags=...) at
kernel/qeventloop.cpp:201
#41 0x00007fb852536ce7 in QCoreApplication::exec () at
kernel/qcoreapplication.cpp:1064
#42 0x000000000042c4e1 in main (argc=3, argv=0x7fff3c6c5658) at
/usr/src/debug/kde-base/kget-4.7.3/kget-4.7.3/kget/main.cpp:168

Reported using DrKonqi

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