Bug 394820

Application: ksysguard (5.12.5)

Qt Version: 5.10.1
Frameworks Version: 5.46.0
Operating System: Linux 4.16.12-1-MANJARO x86_64
Distribution: "Manjaro Linux"

-- Information about the crash:
I was having 2 instances of SM and after I close the 2nd instance with Alt+F4 it crashed...

The crash does not seem to be reproducible.

-- Backtrace:
Application: System Monitor (ksysguard), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fd07bfc5e80 (LWP 7471))]

Thread 4 (Thread 0x7fd052cb2700 (LWP 7474)):
#0  0x00007fd07b90bea9 in poll () at /usr/lib/libc.so.6
#1  0x00007fd06d96d523 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fd06d96d63e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007fd077101254 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fd0770a331b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007fd076eb271e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007fd0777bb416 in  () at /usr/lib/libQt5DBus.so.5
#7  0x00007fd076eb7abd in  () at /usr/lib/libQt5Core.so.5
#8  0x00007fd06f992075 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007fd07b91653f in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7fd05ea75700 (LWP 7473)):
#0  0x00007fd07b90bea9 in poll () at /usr/lib/libc.so.6
#1  0x00007fd0701e9180 in  () at /usr/lib/libxcb.so.1
#2  0x00007fd0701eae4b in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007fd06140882a in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007fd076eb7abd in  () at /usr/lib/libQt5Core.so.5
#5  0x00007fd06f992075 in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007fd07b91653f in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7fd062741700 (LWP 7472)):
#0  0x00007fd06f997ffc in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fd076b33d5d in __gthread_cond_wait (__mutex=<optimized out>, __cond=<optimized out>) at /build/gcc/src/gcc-build/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
#2  0x00007fd076b33d5d in std::condition_variable::wait(std::unique_lock<std::mutex>&) (this=<optimized out>, __lock=...) at /build/gcc/src/gcc/libstdc++-v3/src/c++11/condition_variable.cc:53
#3  0x00007fd07528b379 in  () at /usr/lib/libQt5WebKit.so.5
#4  0x00007fd07528b4c9 in  () at /usr/lib/libQt5WebKit.so.5
#5  0x00007fd076b39d3f in execute_native_thread_routine (__p=0x55debf6420d0) at /build/gcc/src/gcc/libstdc++-v3/src/c++11/thread.cc:80
#6  0x00007fd06f992075 in start_thread () at /usr/lib/libpthread.so.0
#7  0x00007fd07b91653f in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7fd07bfc5e80 (LWP 7471)):
[KCrash Handler]
#6  0x00007fd076f344fa in operator==(QString const&, QString const&) () at /usr/lib/libQt5Core.so.5
#7  0x00007fd078481cf8 in QLabel::setText(QString const&) () at /usr/lib/libQt5Widgets.so.5
#8  0x00007fd07bc4bb57 in  () at /usr/lib/libkdeinit5_ksysguard.so
#9  0x00007fd07acd495a in KSGRD::SensorAgent::processAnswer(char const*, int) () at /usr/lib/libksgrd.so.7
#10 0x00007fd07acdbdc6 in  () at /usr/lib/libksgrd.so.7
#11 0x00007fd0770d572f in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#12 0x00007fd07701d76b in QProcess::readyReadStandardOutput(QProcess::QPrivateSignal) () at /usr/lib/libQt5Core.so.5
#13 0x00007fd07702448a in  () at /usr/lib/libQt5Core.so.5
#14 0x00007fd077024970 in  () at /usr/lib/libQt5Core.so.5
#15 0x00007fd0770d5606 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#16 0x00007fd0770e1ee9 in QSocketNotifier::activated(int, QSocketNotifier::QPrivateSignal) () at /usr/lib/libQt5Core.so.5
#17 0x00007fd0770e22c4 in QSocketNotifier::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#18 0x00007fd078343fec in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#19 0x00007fd07834b9c6 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#20 0x00007fd0770a4ce0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#21 0x00007fd077101ece in  () at /usr/lib/libQt5Core.so.5
#22 0x00007fd06d96d368 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#23 0x00007fd06d96d5b1 in  () at /usr/lib/libglib-2.0.so.0
#24 0x00007fd06d96d63e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#25 0x00007fd077101231 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#26 0x00007fd061490482 in  () at /usr/lib/libQt5XcbQpa.so.5
#27 0x00007fd0770a331b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#28 0x00007fd0770ac718 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#29 0x00007fd07bc4d893 in kdemain () at /usr/lib/libkdeinit5_ksysguard.so
#30 0x00007fd07b84106b in __libc_start_main () at /usr/lib/libc.so.6
#31 0x000055debdc3475a in _start ()

Reported using DrKonqi