On 11.02.22 г. 7:03 ч., Chen, Hongzhan wrote:
> But when I double click the box , kernel-shark quit abnormally with segmentation fault.
> 
> Following is backtrace info:
> 
> [Thread 0x7fffc084d700 (LWP 2064) exited]
> 
> Thread 1 "kernelshark" received signal SIGSEGV, Segmentation fault.
> KsMainWindow::markEntry (this=0x0, e=0x7fffadf90f60, st=DualMarkerState::B) at /home/intel/iotg/dovetail/kernelshark/kernel-shark/src/KsUtils.hpp:229
> 229             ssize_t size() const {return _dataSize;}
> (gdb) backtrace
> #0  0x00007ffff7b91442 in KsMainWindow::markEntry(kshark_entry const*, DualMarkerState) (this=0x0, e=0x7fffadf90f60, st=DualMarkerState::B)
>      at /home/intel/iotg/dovetail/kernelshark/kernel-shark/src/KsUtils.hpp:229
> #1  0x00007fffc0876329 in XenomaiSwitchBox::_doubleClick() const (this=0x1c7ebc0) at CobaltSwitchEvents.cpp:43
> #2  0x00007ffff5a2594f in QWidget::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #3  0x00007ffff59e683c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #4  0x00007ffff59ee65f in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #5  0x00007ffff48dc8a8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
> #6  0x00007ffff59ed632 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) ()
>      at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #7  0x00007ffff5a4015b in  () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #8  0x00007ffff5a427ca in  () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #9  0x00007ffff59e683c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #10 0x00007ffff59ee104 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
> #11 0x00007ffff48dc8a8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
> #12 0x00007ffff522a780 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
> #13 0x00007ffff522c0b5 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
> #14 0x00007ffff520333b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
> #15 0x00007fffed8ae260 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
> #16 0x00007ffff13b7537 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
> #17 0x00007ffff13b7770 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
> #18 0x00007ffff13b77fc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
> #19 0x00007ffff493585f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
> #20 0x00007ffff48da8da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
> #21 0x00007ffff48e3984 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
> #22 0x0000000000402af5 in main (argc=<optimized out>, argv=<optimized out>) at /home/intel/iotg/dovetail/kernelshark/kernel-shark/src/kernelshark.cpp:154
> #23 0x00007ffff369abf7 in __libc_start_main (main=
>      0x402480 <main>, argc=1, argv=0x7fffffffdd18, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffdd08) at ../csu/libc-start.c:310
> #24 0x0000000000402cfa in _start () at /home/intel/iotg/dovetail/kernelshark/kernel-shark/src/kernelshark.cpp:129
> (gdb)
> 

Hi Hongzhan,

I have an idea what can be the problem here.
Please try applying the attached patch and let me know if the double click works.

Thanks!
Yordan


> Regards
> 
> Hongzhan Chen