https://bugs.kde.org/show_bug.cgi?id=501181
Bug ID: 501181
Summary: Kwin 6.3.2.1-r1 crashes when launching wayland
Chromium
Classification: Plasma
Product: kwin
Version: 6.3.2
Platform: Gentoo Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: generic-crash
Assignee: kwin-bugs-n...@kde.org
Reporter: m...@fireburn.co.uk
Target Milestone: ---
Here's the backtrace:
Core was generated by `/usr/bin/kwin_wayland --wayland-fd 7 --socket wayland-0
--xwayland-fd 8 --xwayland-fd 9 --xwayland-display :0 --xwayland-xauthority
/run/user/1000/xauth_xsjAPz --xwayland'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x00007efe0d0a140b in pthread_kill@@GLIBC_2.34 () from /usr/lib64/libc.so.6
[Current thread is 1 (Thread 0x7efe0a87ca00 (LWP 97519))]
(gdb) bt
#0 0x00007efe0d0a140b in pthread_kill@@GLIBC_2.34 () at /usr/lib64/libc.so.6
#1 0x00007efe0d041ea6 in raise () at /usr/lib64/libc.so.6
#2 0x00007efe10bc62a2 in KCrash::defaultCrashHandler(int) () at
/usr/lib64/libKF6Crash.so.6
#3 0x00007efe0d041fd0 in <signal handler called> () at /usr/lib64/libc.so.6
#4 KWin::DrmPipeline::commitPipelines (pipelines=...,
mode=KWin::DrmPipeline::CommitMode::TestAllowModeset, unusedObjects=...) at
/var/tmp/portage/kde-plasma/kwin-6.3.2.1-r1/work/kwin-6.3.2.1/src/backends/drm/drm_pipeline.cpp:84
#5 0x00007efe108f5b58 in KWin::DrmGpu::testPipelines (this=0x5558f30f8ad0) at
/var/tmp/portage/kde-plasma/kwin-6.3.2.1-r1/work/kwin-6.3.2.1/src/backends/drm/drm_gpu.cpp:450
#6 0x00007efe108f573b in KWin::DrmGpu::checkCrtcAssignment
(this=0x5558f30f8ad0, connectors=..., crtcs=...) at
/var/tmp/portage/kde-plasma/kwin-6.3.2.1-r1/work/kwin-6.3.2.1/src/backends/drm/drm_gpu.cpp:356
#7 0x00007efe108f64c1 in KWin::DrmGpu::testPendingConfiguration
(this=0x5558f30f8ad0) at
/var/tmp/portage/kde-plasma/kwin-6.3.2.1-r1/work/kwin-6.3.2.1/src/backends/drm/drm_gpu.cpp:441
#8 0x00007efe108d1609 in KWin::DrmBackend::applyOutputChanges
(this=0x5558efead410, config=...) at
/var/tmp/portage/kde-plasma/kwin-6.3.2.1-r1/work/kwin-6.3.2.1/src/backends/drm/drm_backend.cpp:389
#9 0x00007efe10868684 in KWin::Workspace::applyOutputConfiguration
(this=0x5558f01ec6a0, config=..., outputOrder=std::optional [no contained
value]) at
/var/tmp/portage/kde-plasma/kwin-6.3.2.1-r1/work/kwin-6.3.2.1/src/workspace.cpp:501
#10 0x00007efe1086685c in KWin::Workspace::updateOutputConfiguration
(this=0x5558f01ec6a0) at
/var/tmp/portage/kde-plasma/kwin-6.3.2.1-r1/work/kwin-6.3.2.1/src/workspace.cpp:570
#11 0x00007efe10863cac in KWin::Workspace::slotOutputBackendOutputsQueried
(this=0x5558f30f8ba0) at
/var/tmp/portage/kde-plasma/kwin-6.3.2.1-r1/work/kwin-6.3.2.1/src/workspace.cpp:1234
#12 0x00007efe0da935b1 in ??? () at /usr/lib64/libQt6Core.so.6
#13 0x00007efe108d055b in KWin::DrmBackend::updateOutputs (this=0x5558efead410)
at
/var/tmp/portage/kde-plasma/kwin-6.3.2.1-r1/work/kwin-6.3.2.1/src/backends/drm/drm_backend.cpp:283
#14 0x00007efe108d01b1 in KWin::DrmBackend::handleUdevEvent
(this=0x5558efead410) at
/var/tmp/portage/kde-plasma/kwin-6.3.2.1-r1/work/kwin-6.3.2.1/src/backends/drm/drm_backend.cpp:191
#15 0x00007efe0da935b1 in ??? () at /usr/lib64/libQt6Core.so.6
#16 0x00007efe0dbc7ee2 in QSocketNotifier::event(QEvent*) () at
/usr/lib64/libQt6Core.so.6
#17 0x00007efe0eea855d in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /usr/lib64/libQt6Widgets.so.6
#18 0x00007efe0eea9f19 in QApplication::notify(QObject*, QEvent*) () at
/usr/lib64/libQt6Widgets.so.6
#19 0x00007efe0db410a0 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at /usr/lib64/libQt6Core.so.6
#20 0x00007efe0d9e64be in
QEventDispatcherUNIXPrivate::activateSocketNotifiers() () at
/usr/lib64/libQt6Core.so.6
#21 0x00007efe0d9e7e46 in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib64/libQt6Core.so.6
#22 0x00007efe0e61ed9e in
QUnixEventDispatcherQPA::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
() at /usr/lib64/libQt6Gui.so.6
#23 0x00007efe0db41d86 in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib64/libQt6Core.so.6
#24 0x00007efe0db418df in QCoreApplication::exec() () at
/usr/lib64/libQt6Core.so.6
#25 0x00005558eddedd90 in main (argc=14, argv=<optimized out>) at
/var/tmp/portage/kde-plasma/kwin-6.3.2.1-r1/work/kwin-6.3.2.1/src/main_wayland.cpp:622
(gdb) frame 4
#4 KWin::DrmPipeline::commitPipelines (pipelines=...,
mode=KWin::DrmPipeline::CommitMode::TestAllowModeset, unusedObjects=...) at
/var/tmp/portage/kde-plasma/kwin-6.3.2.1-r1/work/kwin-6.3.2.1/src/backends/drm/drm_pipeline.cpp:84
84 if (pipelines[0]->gpu()->atomicModeSetting()) {
(gdb) p pipelines[0]
Could not find operator[].
(gdb)
This is KF 6.11, Qt 6.8.2 and it's all built using Clang 20.1.0
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