https://bugs.kde.org/show_bug.cgi?id=419228
Bug ID: 419228
Summary: KWin crashes when I use ctrl+alt+Function key to
switch to other terminal and back.
Product: kwin
Version: 5.16.5
Platform: Ubuntu Packages
OS: Linux
Status: REPORTED
Keywords: drkonqi
Severity: crash
Priority: NOR
Component: general
Assignee: kwin-bugs-n...@kde.org
Reporter: david_oldf...@hotmail.com
Target Milestone: ---
Application: kwin_x11 (5.16.5)
Qt Version: 5.12.4
Frameworks Version: 5.62.0
Operating System: Linux 5.3.0-42-generic x86_64
Distribution: Ubuntu 19.10
-- Information about the crash:
I used ctrl+alt+F2 to switch to a terminal outside of X and then ctrl+alt+F1 to
switch back to X (on Ubuntu 19.10) KWin appears to start back up and work just
fine after the switch back. I've done this multiple times and seen the crash
reported every time, though I can't say for sure that it always happens.
The crash can be reproduced every time.
-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f6e93e87d00 (LWP 3036))]
Thread 6 (Thread 0x7f6e82fbe700 (LWP 4388)):
#0 0x00007f6e98d9b2c6 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x55ad0d457e44) at
../sysdeps/unix/sysv/linux/futex-internal.h:80
#1 0x00007f6e98d9b2c6 in __pthread_cond_wait_common (abstime=0x0, clockid=0,
mutex=0x55ad0d457df0, cond=0x55ad0d457e18) at pthread_cond_wait.c:508
#2 0x00007f6e98d9b2c6 in __pthread_cond_wait (cond=0x55ad0d457e18,
mutex=0x55ad0d457df0) at pthread_cond_wait.c:638
#3 0x00007f6e9982cdbf in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007f6e9982ceb1 in QWaitCondition::wait(QMutex*, unsigned long) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007f6e988c27b9 in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6 0x00007f6e988c2a1a in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7 0x00007f6e99826c92 in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8 0x00007f6e98d94669 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#9 0x00007f6e9af8d323 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 5 (Thread 0x7f6e7b229700 (LWP 3406)):
#0 0x00007f6e98d9b2c6 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x7f6e993a9fb8) at
../sysdeps/unix/sysv/linux/futex-internal.h:80
#1 0x00007f6e98d9b2c6 in __pthread_cond_wait_common (abstime=0x0, clockid=0,
mutex=0x7f6e993a9f68, cond=0x7f6e993a9f90) at pthread_cond_wait.c:508
#2 0x00007f6e98d9b2c6 in __pthread_cond_wait (cond=0x7f6e993a9f90,
mutex=0x7f6e993a9f68) at pthread_cond_wait.c:638
#3 0x00007f6e992b308a in () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#4 0x00007f6e992b30af in () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#5 0x00007f6e98d94669 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#6 0x00007f6e9af8d323 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 4 (Thread 0x7f6e83fff700 (LWP 3258)):
#0 0x00007f6e9af80d26 in __GI_ppoll (fds=0x7f6e7c000d68, nfds=1,
timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1 0x00007f6e99a41589 in qt_safe_poll(pollfd*, unsigned long, timespec const*)
() at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2 0x00007f6e99a42af4 in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3 0x00007f6e999ec5cb in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007f6e99825a45 in QThread::exec() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007f6e98534319 in () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#6 0x00007f6e99826c92 in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7 0x00007f6e98d94669 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#8 0x00007f6e9af8d323 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 3 (Thread 0x7f6e925ad700 (LWP 3211)):
#0 0x00007f6e9af80d26 in __GI_ppoll (fds=0x7f6e8400e9d8, nfds=1,
timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1 0x00007f6e99a41589 in qt_safe_poll(pollfd*, unsigned long, timespec const*)
() at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2 0x00007f6e99a42af4 in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3 0x00007f6e999ec5cb in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007f6e99825a45 in QThread::exec() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007f6e97f73efa in () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#6 0x00007f6e99826c92 in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7 0x00007f6e98d94669 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#8 0x00007f6e9af8d323 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 2 (Thread 0x7f6e9349a700 (LWP 3067)):
#0 0x00007f6e9af80c2f in __GI___poll (fds=0x7f6e93499c28, nfds=1, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
#1 0x00007f6e9974a917 in () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2 0x00007f6e9974c53a in xcb_wait_for_event () at
/usr/lib/x86_64-linux-gnu/libxcb.so.1
#3 0x00007f6e937a7288 in () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4 0x00007f6e99826c92 in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007f6e98d94669 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#6 0x00007f6e9af8d323 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 1 (Thread 0x7f6e93e87d00 (LWP 3036)):
[KCrash Handler]
#6 0x00007f6e994c9969 in () at
/usr/lib/x86_64-linux-gnu/libkwin4_effect_builtins.so.1
#7 0x00007f6e994c9a29 in () at
/usr/lib/x86_64-linux-gnu/libkwin4_effect_builtins.so.1
#8 0x00007f6e994cb8b2 in () at
/usr/lib/x86_64-linux-gnu/libkwin4_effect_builtins.so.1
#9 0x00007f6e994cc29d in () at
/usr/lib/x86_64-linux-gnu/libkwin4_effect_builtins.so.1
#10 0x00007f6e9accb4c7 in
KWin::EffectsHandlerImpl::drawWindow(KWin::EffectWindow*, int, QRegion,
KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#11 0x00007f6e99433ab0 in () at
/usr/lib/x86_64-linux-gnu/libkwin4_effect_builtins.so.1
#12 0x00007f6e9accb4c7 in
KWin::EffectsHandlerImpl::drawWindow(KWin::EffectWindow*, int, QRegion,
KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#13 0x00007f6e9acb9a4f in
KWin::Scene::finalPaintWindow(KWin::EffectWindowImpl*, int, QRegion,
KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#14 0x00007f6e9accb360 in
KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion,
KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#15 0x00007f6e9952e68f in KWin::Effect::paintWindow(KWin::EffectWindow*, int,
QRegion, KWin::WindowPaintData&) () at
/usr/lib/x86_64-linux-gnu/libkwineffects.so.12
#16 0x00007f6e9accb307 in
KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion,
KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#17 0x00007f6e9952e68f in KWin::Effect::paintWindow(KWin::EffectWindow*, int,
QRegion, KWin::WindowPaintData&) () at
/usr/lib/x86_64-linux-gnu/libkwineffects.so.12
#18 0x00007f6e9accb307 in
KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion,
KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#19 0x00007f6e9acc0236 in KWin::Scene::paintWindow(KWin::Scene::Window*, int,
QRegion, KWin::WindowQuadList) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#20 0x00007f6e9acbcc2d in KWin::Scene::paintSimpleScreen(int, QRegion) () at
/usr/lib/x86_64-linux-gnu/libkwin.so.5
#21 0x00007f6e9030f357 in () at
/usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kwin.scenes/KWinSceneOpenGL.so
#22 0x00007f6e9acbf800 in KWin::Scene::finalPaintScreen(int, QRegion,
KWin::ScreenPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#23 0x00007f6e9accb0b2 in KWin::EffectsHandlerImpl::paintScreen(int, QRegion,
KWin::ScreenPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#24 0x00007f6e9952e5c3 in KWin::Effect::paintScreen(int, QRegion,
KWin::ScreenPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwineffects.so.12
#25 0x00007f6e9accb061 in KWin::EffectsHandlerImpl::paintScreen(int, QRegion,
KWin::ScreenPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#26 0x00007f6e9952e5c3 in KWin::Effect::paintScreen(int, QRegion,
KWin::ScreenPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwineffects.so.12
#27 0x00007f6e9accb061 in KWin::EffectsHandlerImpl::paintScreen(int, QRegion,
KWin::ScreenPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#28 0x00007f6e9acbf4b3 in KWin::Scene::paintScreen(int*, QRegion const&,
QRegion const&, QRegion*, QRegion*, QMatrix4x4 const&, QRect const&) () at
/usr/lib/x86_64-linux-gnu/libkwin.so.5
#29 0x00007f6e90317c7e in KWin::SceneOpenGL::paint(QRegion,
QList<KWin::Toplevel*>) () at
/usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kwin.scenes/KWinSceneOpenGL.so
#30 0x00007f6e9acb1247 in KWin::Compositor::performCompositing() () at
/usr/lib/x86_64-linux-gnu/libkwin.so.5
#31 0x00007f6e99a19de5 in QObject::event(QEvent*) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007f6e9a401a86 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#33 0x00007f6e9a40ae00 in QApplication::notify(QObject*, QEvent*) () at
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#34 0x00007f6e999eda2a in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#35 0x00007f6e99a44990 in QTimerInfoList::activateTimers() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#36 0x00007f6e99a42c4f in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#37 0x00007f6e937a8642 in () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#38 0x00007f6e999ec5cb in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#39 0x00007f6e999f4336 in QCoreApplication::exec() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#40 0x00007f6e9b06687d in kdemain () at
/usr/lib/x86_64-linux-gnu/libkdeinit5_kwin_x11.so
#41 0x00007f6e9ae921e3 in __libc_start_main (main=0x55ad0ae97060, argc=1,
argv=0x7fff2ba4bdb8, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7fff2ba4bda8) at ../csu/libc-start.c:308
#42 0x000055ad0ae9709e in _start ()
[Inferior 1 (process 3036) detached]
Reported using DrKonqi
--
You are receiving this mail because:
You are watching all bug changes.
