https://bugs.kde.org/show_bug.cgi?id=456817
Bug ID: 456817
Summary: kwin_wayland segfaults while pressing some buttons on
Tablet
Product: kwin
Version: 5.25.3
Platform: Archlinux Packages
OS: Linux
Status: REPORTED
Severity: crash
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: foraminuteth...@mail.ru
Target Milestone: ---
SUMMARY
kwin_wayland segfaults while pressing buttons on the graphic tablet. (X11 Works
fine)
Here a backtrace:
Core was generated by `/usr/bin/kwin_wayland --wayland-fd 7 --socket wayland-0
--xwayland-fd 8 --xwayl'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x00007f2402722088 in KWaylandServer::ClientConnection::operator
wl_client*() () from /usr/lib/libkwin.so.5
[Current thread is 1 (Thread 0x7f23fb387a80 (LWP 16715))]
(gdb) bt
#0 0x00007f2402722088 in KWaylandServer::ClientConnection::operator
wl_client*() () at /usr/lib/libkwin.so.5
#1 0x00007f24027687f9 in
KWaylandServer::TabletPadV2Interface::setCurrentSurface(KWaylandServer::SurfaceInterface*,
KWaylandServer::TabletV2Interface*) ()
at /usr/lib/libkwin.so.5
#2 0x00007f24025e8986 in () at /usr/lib/libkwin.so.5
#3 0x00007f240267bdb5 in () at /usr/lib/libkwin.so.5
#4 0x00007f24012bd341 in () at /usr/lib/libQt5Core.so.5
#5 0x00007f2402548c22 in KWin::InputDevice::tabletPadButtonEvent(unsigned int,
bool, KWin::TabletPadId const&) () at /usr/lib/libkwin.so.5
#6 0x00007f240270fecc in KWin::LibInput::Connection::processEvents() () at
/usr/lib/libkwin.so.5
#7 0x00007f24012b0440 in QObject::event(QEvent*) () at
/usr/lib/libQt5Core.so.5
#8 0x00007f2400978b3c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /usr/lib/libQt5Widgets.so.5
#9 0x00007f240128cad8 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at /usr/lib/libQt5Core.so.5
#10 0x00007f240128d5e3 in QCoreApplicationPrivate::sendPostedEvents(QObject*,
int, QThreadData*) () at /usr/lib/libQt5Core.so.5
#11 0x00007f24012d6c37 in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/libQt5Core.so.5
#12 0x00005629ef6fd622 in ()
#13 0x00007f240128527c in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/libQt5Core.so.5
#14 0x00007f240128fda9 in QCoreApplication::exec() () at
/usr/lib/libQt5Core.so.5
#15 0x00005629ef622eb5 in ()
#16 0x00007f2400029290 in () at /usr/lib/libc.so.6
#17 0x00007f240002934a in __libc_start_main () at /usr/lib/libc.so.6
#18 0x00005629ef6245d5 in ()
STEPS TO REPRODUCE
I cannot find exactly reproduce steps (behavior changes from time to time)
1. Plug in tablet
2. Press some buttons on tablet (not a pen)
OBSERVED RESULT
kwin_wayland segfaults, thus every graphical session application crashes
EXPECTED RESULT
Normal operation
SOFTWARE/OS VERSIONS
OS: Arch Linux 64-bit Kernel: 5.18.11-arch1-1 #1 SMP PREEMPT_DYNAMIC Tue, 12
Jul 2022 15:40:51 +0000 x86_64 GNU/Linux
KDE Plasma Version: 5.25.3
KDE Frameworks Version: 5.96.0
Qt Version: 5.15.5
Graphics Platform: Wayland
HARDWARE INFORMATION
Tablet: Ugee M708 (v1 with active pen), detects as "UC-LOIC Tablet 1060".
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