Bug 401556

Application: yakuake (3.0.5)

Qt Version: 5.11.2
Frameworks Version: 5.52.0
Operating System: Linux 4.15.0-39-generic x86_64
Distribution: KDE neon User Edition 5.14

-- Information about the crash:
With two or more tabs open in yakuake, try and close right most one with Ctrl + Shift + R. First tab had been slept while sshed and was unresponsive but I don't think that should be an issue. Crash doesn't seem to always happen but is constant enough that I am filing a bug report.

Can provide further info if needed and am a programmer. May not be super responsive.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Yakuake (yakuake), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f682515a800 (LWP 2079))]

Thread 3 (Thread 0x7f6807fff700 (LWP 2092)):
#0  0x00007f6819967049 in g_mutex_lock () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f6819920aa3 in g_main_context_prepare () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f681992146b in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f681992164c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f681ffc504b in QEventDispatcherGlib::processEvents (this=0x7f6800000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007f681ff6930a in QEventLoop::exec (this=this@entry=0x7f6807ffed70, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#6  0x00007f681fd94bba in QThread::exec (this=<optimized out>) at thread/qthread.cpp:525
#7  0x00007f6821bd7e45 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#8  0x00007f681fd9fadb in QThreadPrivate::start (arg=0x7f6821e4fd60) at thread/qthread_unix.cpp:367
#9  0x00007f681b4936db in start_thread (arg=0x7f6807fff700) at pthread_create.c:463
#10 0x00007f681f69788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f680fdc1700 (LWP 2089)):
#0  0x00007f681f68abf9 in __GI___poll (fds=0x7f680fdc0ca8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f681d75a747 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f681d75c36a in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f6812d81ed9 in QXcbEventReader::run (this=0x556508589100) at qxcbconnection.cpp:1391
#4  0x00007f681fd9fadb in QThreadPrivate::start (arg=0x556508589100) at thread/qthread_unix.cpp:367
#5  0x00007f681b4936db in start_thread (arg=0x7f680fdc1700) at pthread_create.c:463
#6  0x00007f681f69788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f682515a800 (LWP 2079)):
[KCrash Handler]
#6  QScopedScopeLevelCounter::QScopedScopeLevelCounter (threadData=0x7f6820037b60 <QArrayData::shared_null>, this=<synthetic pointer>) at ../../include/QtCore/5.11.2/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:305
#7  QCoreApplication::notifyInternal2 (receiver=0x55650858a110, event=event@entry=0x556508767a80) at kernel/qcoreapplication.cpp:1045
#8  0x00007f681ff6db2d in QCoreApplication::sendEvent (event=0x556508767a80, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#9  QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x5565085694c0) at kernel/qcoreapplication.cpp:1745
#10 0x00007f681ff6e0e8 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1599
#11 0x00007f681ffc59f3 in postEventSourceDispatch (s=0x5565085c5620) at kernel/qeventdispatcher_glib.cpp:276
#12 0x00007f6819921387 in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#13 0x00007f68199215c0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#14 0x00007f681992164c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#15 0x00007f681ffc502f in QEventDispatcherGlib::processEvents (this=0x5565085c9990, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#16 0x00007f6812e0d761 in QPAEventDispatcherGlib::processEvents (this=0x5565085c9990, flags=...) at qeventdispatcher_glib.cpp:69
#17 0x00007f681ff6930a in QEventLoop::exec (this=this@entry=0x7ffc45bb2e80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#18 0x00007f681ff724d0 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1336
#19 0x00005565081925a2 in main (argc=<optimized out>, argv=<optimized out>) at ./app/main.cpp:88
[Inferior 1 (process 2079) detached]

Reported using DrKonqi