Bug 394932

Summary: Error on validade certificate with squid proxy
Product: [Applications] Discover Reporter: William Volkweis <william.v0lkwe1s>
Component: discoverAssignee: Aleix Pol <aleixpol>
Status: RESOLVED DOWNSTREAM    
Severity: crash Keywords: drkonqi
Priority: NOR    
Version First Reported In: 5.8.5   
Target Milestone: ---   
Platform: Debian stable   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:
Attachments: Alert

Description William Volkweis 2018-06-02 00:24:48 UTC 
Application: plasma-discover (5.8.5)

Qt Version: 5.7.1
Frameworks Version: 5.28.0
Operating System: Linux 4.9.0-6-amd64 x86_64
Distribution: Debian GNU/Linux 9.4 (stretch)

-- Information about the crash:
- What I was doing when the application crashed:
Tryng upgrade system packages

- Custom settings of the application:
I have squid proxy with sslbump.

when I start program, I get an alert from application about certificate, when click in details fur check, application crash.
Certificate is auto signed, and this cause a alert from source.

The crash can be reproduced every time.

-- Backtrace:
Application: Discover (plasma-discover), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f50c9d8bfc0 (LWP 3114))]

Thread 10 (Thread 0x7f505ed2c700 (LWP 3138)):
#0  0x00007f50c668c6ed in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f50c1eaad40 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f50c1e664be in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f50c1e66994 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f50c1e66b0c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f50c72a906b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f50c72529ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f50c70800f3 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f50c7084da8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f50c3fcd494 in start_thread (arg=0x7f505ed2c700) at pthread_create.c:333
#10 0x00007f50c6699acf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 9 (Thread 0x7f5066192700 (LWP 3128)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f50c7085c6b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f50c96ce405 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#3  0x00007f50c96cecfa in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007f50c7084da8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f50c3fcd494 in start_thread (arg=0x7f5066192700) at pthread_create.c:333
#6  0x00007f50c6699acf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 8 (Thread 0x7f508dcda700 (LWP 3123)):
#0  0x00007f50c669067d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f50c1e669f6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f50c1e66d82 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f50999df656 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f50c1e8e3d5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f50c3fcd494 in start_thread (arg=0x7f508dcda700) at pthread_create.c:333
#6  0x00007f50c6699acf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 7 (Thread 0x7f508e4db700 (LWP 3122)):
#0  0x00007f50c669067d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f50c1e669f6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f50c1e66b0c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f50c1e66b51 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f50c1e8e3d5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f50c3fcd494 in start_thread (arg=0x7f508e4db700) at pthread_create.c:333
#6  0x00007f50c6699acf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 6 (Thread 0x7f50a222a700 (LWP 3119)):
#0  0x00007f50c669067d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f50c1e669f6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f50c1e66b0c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f50c72a906b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f50c72529ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f50c70800f3 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f50c7084da8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f50c3fcd494 in start_thread (arg=0x7f50a222a700) at pthread_create.c:333
#8  0x00007f50c6699acf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 5 (Thread 0x7f50a8a45700 (LWP 3118)):
#0  0x00007f50c1e66904 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f50c1e66b0c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f50c72a906b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f50c72529ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f50c83b50e7 in QDialog::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#5  0x00007f50c5bad8fd in KIO::JobUiDelegate::requestMessageBox(KIO::JobUiDelegateExtension::MessageBoxType, QString const&, QString const&, QString const&, QString const&, QString const&, QString const&, QString const&, KIO::MetaData const&) () from /usr/lib/x86_64-linux-gnu/libKF5KIOWidgets.so.5
#6  0x00007f50c128c2f6 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#7  0x00007f50c7281499 in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f50c81c6b8c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#9  0x00007f50c81ce341 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#10 0x00007f50c72549e0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f50c725716d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f50c72a8c43 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f50c1e667f7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#14 0x00007f50c1e66a60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#15 0x00007f50c1e66b0c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#16 0x00007f50c72a904f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f50c72529ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f50c70800f3 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f50c965f406 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#20 0x00007f50c7084da8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007f50c3fcd494 in start_thread (arg=0x7f50a8a45700) at pthread_create.c:333
#22 0x00007f50c6699acf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 4 (Thread 0x7f50ab5ef700 (LWP 3117)):
#0  0x00007f50c668c6ed in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f50c1eaad40 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f50c1e664be in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f50c1e66994 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f50c1e66b0c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f50c72a906b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f50c72529ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f50c70800f3 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f50c7a076a5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007f50c7084da8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f50c3fcd494 in start_thread (arg=0x7f50ab5ef700) at pthread_create.c:333
#11 0x00007f50c6699acf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 3 (Thread 0x7f50b095a700 (LWP 3116)):
#0  0x00007f50c668c6ed in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f50c1eaad40 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f50c1e664be in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f50c1e66994 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f50c1e66b0c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f50c72a906b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f50c72529ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f50c70800f3 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f50c9ecb6d5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#9  0x00007f50c7084da8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f50c3fcd494 in start_thread (arg=0x7f50b095a700) at pthread_create.c:333
#11 0x00007f50c6699acf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 2 (Thread 0x7f50b9554700 (LWP 3115)):
#0  0x00007f50c669067d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f50c19f8150 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f50c19f9ee9 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f50bc0e5b69 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f50c7084da8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f50c3fcd494 in start_thread (arg=0x7f50b9554700) at pthread_create.c:333
#6  0x00007f50c6699acf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 1 (Thread 0x7f50c9d8bfc0 (LWP 3114)):
[KCrash Handler]
#6  0x00007f50c7e7bb68 in QRasterPaintEngine::drawTextItem(QPointF const&, QTextItem const&) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#7  0x00007f50c7e982d6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#8  0x00007f50c7d152af in QTextLine::draw(QPainter*, QPointF const&, QTextLayout::FormatRange const*) const () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#9  0x00007f50c7e8eaec in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#10 0x00007f50c7e95583 in QPainter::drawText(QRect const&, int, QString const&, QRect*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#11 0x00007f50c82344f4 in QStyle::drawItemText(QPainter*, QRect const&, int, QPalette const&, bool, QString const&, QPalette::ColorRole) const () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#12 0x00007f50b0bf9ec9 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/styles/breeze.so
#13 0x00007f50c82fd8ea in QLabel::paintEvent(QPaintEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#14 0x00007f50c820e278 in QWidget::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007f50c82f6a0e in QFrame::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007f50c81c6b8c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007f50c81ce341 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007f50c72549e0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f50c8206fda in QWidgetPrivate::sendPaintEvent(QRegion const&) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#20 0x00007f50c8207646 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00007f50c820834c in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#22 0x00007f50c8208239 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#23 0x00007f50c8208239 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#24 0x00007f50c8208239 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#25 0x00007f50c8208239 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#26 0x00007f50c8208239 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#27 0x00007f50c8208239 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#28 0x00007f50c8208239 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#29 0x00007f50c8208239 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#30 0x00007f50c8208239 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#31 0x00007f50c8208239 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#32 0x00007f50c8208239 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#33 0x00007f50c8208239 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#34 0x00007f50c8208239 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#35 0x00007f50c8208239 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#36 0x00007f50c8208239 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#37 0x00007f50c8208239 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#38 0x00007f50c8208239 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#39 0x00007f50c8208239 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#40 0x00007f50c8208239 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#41 0x00007f50c8208239 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#42 0x00007f50c8208239 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#43 0x00007f50c8208239 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#44 0x00007f50c82071a4 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#45 0x00007f50c820834c in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#46 0x00007f50c8208239 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#47 0x00007f50c82071a4 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#48 0x00007f50c81d6f8a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#49 0x00007f50c81d76d5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#50 0x00007f50c822a90c in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#51 0x00007f50c822b343 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#52 0x00007f50c81c6b8c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#53 0x00007f50c81ce341 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#54 0x00007f50c72549e0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#55 0x00007f50c7c2caed in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#56 0x00007f50c7c2d6fd in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#57 0x00007f50c7c0b61b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#58 0x00007f50bc11c4c0 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#59 0x00007f50c1e667f7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#60 0x00007f50c1e66a60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#61 0x00007f50c1e66b0c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#62 0x00007f50c72a904f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#63 0x00007f50c72529ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#64 0x00007f50c725b13c in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#65 0x0000558d093a0c02 in ?? ()
#66 0x00007f50c65d12e1 in __libc_start_main (main=0x558d093a0520, argc=3, argv=0x7ffd59a13648, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd59a13638) at ../csu/libc-start.c:291
#67 0x0000558d093a0d2a in _start ()

Reported using DrKonqi
Comment 1 William Volkweis 2018-06-02 00:28:35 UTC 
Created attachment 113004 [details]
Alert
Comment 2 Aleix Pol 2018-06-06 01:15:15 UTC 
I'm sorry but I've tried to reproduce it and it worked fine here.
Please provide more details.

Also note you are using an unsupported version of the software. Upgrading to 5.12 could possibly solve the issue.