https://bugs.kde.org/show_bug.cgi?id=434865
Bug ID: 434865
Summary: KWin Randomly Crashes
Product: kwin
Version: unspecified
Platform: Ubuntu Packages
OS: Linux
Status: REPORTED
Keywords: drkonqi
Severity: crash
Priority: NOR
Component: general
Assignee: kwin-bugs-n...@kde.org
Reporter: samarth.hawal...@protonmail.com
Target Milestone: ---
Application: kwin_x11 (5.18.5)
Qt Version: 5.12.8
Frameworks Version: 5.68.0
Operating System: Linux 5.4.0-67-generic x86_64
Windowing system: X11
Distribution: Ubuntu 20.04.2 LTS
-- Information about the crash:
- Unusual behavior I noticed:
Just before the crash, the system started to become unresponsive. The crash
happened just after starting ungoogled chromium and then going to a website
(website was starting to load. No previous issues with accessing the same)
- Custom settings of the application:
Was using 4 Virtual Desktops (? if that is what they are called) with some load
on each. ~ 1 Firefox instance on each with a total of ~8 tabs over all Desktops
-- 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 0x7f0ebb318800 (LWP 1770))]
Thread 13 (Thread 0x7f0e91858700 (LWP 64085)):
#0 futex_wait_cancelable (private=<optimized out>, expected=0,
futex_word=0x55dea2ca87b4) at ../sysdeps/nptl/futex-internal.h:183
#1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55dea2ca8760,
cond=0x55dea2ca8788) at pthread_cond_wait.c:508
#2 __pthread_cond_wait (cond=0x55dea2ca8788, mutex=0x55dea2ca8760) at
pthread_cond_wait.c:638
#3 0x00007f0ec08b8b0f in QWaitConditionPrivate::wait(QDeadlineTimer)
(deadline=..., this=0x55dea2ca8760) at thread/qwaitcondition_unix.cpp:146
#4 QWaitCondition::wait(QMutex*, QDeadlineTimer) (this=<optimized out>,
mutex=0x55dea2f3a4d0, deadline=...) at thread/qwaitcondition_unix.cpp:225
#5 0x00007f0ec08b8c01 in QWaitCondition::wait(QMutex*, unsigned long)
(this=0x55dea2f3a4d8, mutex=0x55dea2f3a4d0, time=<optimized out>) at
../../include/QtCore/../../src/corelib/kernel/qdeadlinetimer.h:68
#6 0x00007f0ebf954109 in () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#7 0x00007f0ebf9543ad in () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#8 0x00007f0ec08b29d2 in QThreadPrivate::start(void*) (arg=0x55dea2f3a450) at
thread/qthread_unix.cpp:361
#9 0x00007f0ebfe70609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#10 0x00007f0ec20df293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 12 (Thread 0x7f0e99858700 (LWP 53148)):
#0 0x00007f0ec20d2bf6 in __ppoll (fds=fds@entry=0x7f0e7c087328,
nfds=nfds@entry=1, timeout=<optimized out>, timeout@entry=0x0,
sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:44
#1 0x00007f0ec0ace4a9 in ppoll (__ss=<optimized out>, __timeout=<optimized
out>, __nfds=<optimized out>, __fds=<optimized out>) at
/usr/include/x86_64-linux-gnu/bits/poll2.h:77
#2 qt_ppoll (timeout_ts=0x0, nfds=1, fds=0x7f0e7c087328) at
kernel/qcore_unix.cpp:132
#3 qt_ppoll (timeout_ts=0x0, nfds=1, fds=0x7f0e7c087328) at
kernel/qcore_unix.cpp:129
#4 qt_safe_poll(pollfd*, unsigned long, timespec const*) (fds=0x7f0e7c087328,
nfds=1, timeout_ts=timeout_ts@entry=0x0) at kernel/qcore_unix.cpp:153
#5 0x00007f0ec0acfa14 in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=<optimized out>, flags=...) at
../../include/QtCore/../../src/corelib/tools/qarraydata.h:211
#6 0x00007f0ec0a794db in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7f0e99857d80, flags=..., flags@entry=...) at
../../include/QtCore/../../src/corelib/global/qflags.h:140
#7 0x00007f0ec08b1785 in QThread::exec() (this=<optimized out>) at
../../include/QtCore/../../src/corelib/global/qflags.h:120
#8 0x00007f0ebf5e31a9 in () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#9 0x00007f0ec08b29d2 in QThreadPrivate::start(void*) (arg=0x55dea22c7b00) at
thread/qthread_unix.cpp:361
#10 0x00007f0ebfe70609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#11 0x00007f0ec20df293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 11 (Thread 0x7f0dfa998700 (LWP 36702)):
#0 0x00007f0ec0ad1509 in QTimerInfoList::activateTimers()
(this=this@entry=0x7f0df4067dc0) at kernel/qtimerinfo_unix.cpp:570
#1 0x00007f0ec0acef10 in QEventDispatcherUNIXPrivate::activateTimers()
(this=this@entry=0x7f0df4067d20) at kernel/qeventdispatcher_unix.cpp:249
#2 0x00007f0ec0acfb6f in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=<optimized out>, flags=...) at kernel/qeventdispatcher_unix.cpp:514
#3 0x00007f0ec0a794db in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7f0dfa997da0, flags=..., flags@entry=...) at
../../include/QtCore/../../src/corelib/global/qflags.h:140
#4 0x00007f0ec08b1785 in QThread::exec() (this=<optimized out>) at
../../include/QtCore/../../src/corelib/global/qflags.h:120
#5 0x00007f0ec08b29d2 in QThreadPrivate::start(void*) (arg=0x55dea257ed80) at
thread/qthread_unix.cpp:361
#6 0x00007f0ebfe70609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#7 0x00007f0ec20df293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 10 (Thread 0x7f0eb299c700 (LWP 20376)):
#0 futex_wait_cancelable (private=<optimized out>, expected=0,
futex_word=0x55dea2c58fa0) at ../sysdeps/nptl/futex-internal.h:183
#1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55dea2c58f50,
cond=0x55dea2c58f78) at pthread_cond_wait.c:508
#2 __pthread_cond_wait (cond=0x55dea2c58f78, mutex=0x55dea2c58f50) at
pthread_cond_wait.c:638
#3 0x00007f0ec08b8b0f in QWaitConditionPrivate::wait(QDeadlineTimer)
(deadline=..., this=0x55dea2c58f50) at thread/qwaitcondition_unix.cpp:146
#4 QWaitCondition::wait(QMutex*, QDeadlineTimer) (this=<optimized out>,
mutex=0x55dea28cb310, deadline=...) at thread/qwaitcondition_unix.cpp:225
#5 0x00007f0ec08b8c01 in QWaitCondition::wait(QMutex*, unsigned long)
(this=0x55dea28cb318, mutex=0x55dea28cb310, time=<optimized out>) at
../../include/QtCore/../../src/corelib/kernel/qdeadlinetimer.h:68
#6 0x00007f0ebf954109 in () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#7 0x00007f0ebf9543ad in () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#8 0x00007f0ec08b29d2 in QThreadPrivate::start(void*) (arg=0x55dea28cb290) at
thread/qthread_unix.cpp:361
#9 0x00007f0ebfe70609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#10 0x00007f0ec20df293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 9 (Thread 0x7f0eb3fff700 (LWP 5488)):
#0 futex_wait_cancelable (private=<optimized out>, expected=0,
futex_word=0x55dea265f820) at ../sysdeps/nptl/futex-internal.h:183
#1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55dea265f7d0,
cond=0x55dea265f7f8) at pthread_cond_wait.c:508
#2 __pthread_cond_wait (cond=0x55dea265f7f8, mutex=0x55dea265f7d0) at
pthread_cond_wait.c:638
#3 0x00007f0ec08b8b0f in QWaitConditionPrivate::wait(QDeadlineTimer)
(deadline=..., this=0x55dea265f7d0) at thread/qwaitcondition_unix.cpp:146
#4 QWaitCondition::wait(QMutex*, QDeadlineTimer) (this=<optimized out>,
mutex=0x55dea265f3b0, deadline=...) at thread/qwaitcondition_unix.cpp:225
#5 0x00007f0ec08b8c01 in QWaitCondition::wait(QMutex*, unsigned long)
(this=0x55dea265f3b8, mutex=0x55dea265f3b0, time=<optimized out>) at
../../include/QtCore/../../src/corelib/kernel/qdeadlinetimer.h:68
#6 0x00007f0ebf954109 in () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#7 0x00007f0ebf9543ad in () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#8 0x00007f0ec08b29d2 in QThreadPrivate::start(void*) (arg=0x55dea265f330) at
thread/qthread_unix.cpp:361
#9 0x00007f0ebfe70609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#10 0x00007f0ec20df293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 8 (Thread 0x7f0e937ff700 (LWP 1993)):
#0 futex_wait_cancelable (private=<optimized out>, expected=0,
futex_word=0x7f0ec04bbfb8) at ../sysdeps/nptl/futex-internal.h:183
#1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f0ec04bbf68,
cond=0x7f0ec04bbf90) at pthread_cond_wait.c:508
#2 __pthread_cond_wait (cond=0x7f0ec04bbf90, mutex=0x7f0ec04bbf68) at
pthread_cond_wait.c:638
#3 0x00007f0ec03be5fa in () at /lib/x86_64-linux-gnu/libQt5Script.so.5
#4 0x00007f0ec03be61f in () at /lib/x86_64-linux-gnu/libQt5Script.so.5
#5 0x00007f0ebfe70609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#6 0x00007f0ec20df293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 7 (Thread 0x7f0e9a059700 (LWP 1946)):
#0 futex_wait_cancelable (private=<optimized out>, expected=0,
futex_word=0x55dea19b3d58) at ../sysdeps/nptl/futex-internal.h:183
#1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55dea19b3d08,
cond=0x55dea19b3d30) at pthread_cond_wait.c:508
#2 __pthread_cond_wait (cond=0x55dea19b3d30, mutex=0x55dea19b3d08) at
pthread_cond_wait.c:638
#3 0x00007f0eb0bf1b5b in () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4 0x00007f0eb0bf175b in () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5 0x00007f0ebfe70609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#6 0x00007f0ec20df293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 6 (Thread 0x7f0e92059700 (LWP 1945)):
#0 futex_wait_cancelable (private=<optimized out>, expected=0,
futex_word=0x55dea19b3d58) at ../sysdeps/nptl/futex-internal.h:183
#1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55dea19b3d08,
cond=0x55dea19b3d30) at pthread_cond_wait.c:508
#2 __pthread_cond_wait (cond=0x55dea19b3d30, mutex=0x55dea19b3d08) at
pthread_cond_wait.c:638
#3 0x00007f0eb0bf1b5b in () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4 0x00007f0eb0bf175b in () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5 0x00007f0ebfe70609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#6 0x00007f0ec20df293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 5 (Thread 0x7f0e9a85a700 (LWP 1944)):
#0 futex_wait_cancelable (private=<optimized out>, expected=0,
futex_word=0x55dea19b3d58) at ../sysdeps/nptl/futex-internal.h:183
#1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55dea19b3d08,
cond=0x55dea19b3d30) at pthread_cond_wait.c:508
#2 __pthread_cond_wait (cond=0x55dea19b3d30, mutex=0x55dea19b3d08) at
pthread_cond_wait.c:638
#3 0x00007f0eb0bf1b5b in () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4 0x00007f0eb0bf175b in () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5 0x00007f0ebfe70609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#6 0x00007f0ec20df293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 4 (Thread 0x7f0e9b05b700 (LWP 1943)):
#0 futex_wait_cancelable (private=<optimized out>, expected=0,
futex_word=0x55dea19b3d58) at ../sysdeps/nptl/futex-internal.h:183
#1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55dea19b3d08,
cond=0x55dea19b3d30) at pthread_cond_wait.c:508
#2 __pthread_cond_wait (cond=0x55dea19b3d30, mutex=0x55dea19b3d08) at
pthread_cond_wait.c:638
#3 0x00007f0eb0bf1b5b in () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4 0x00007f0eb0bf175b in () at /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5 0x00007f0ebfe70609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#6 0x00007f0ec20df293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 3 (Thread 0x7f0eb37fe700 (LWP 1932)):
#0 0x00007f0ec20d2bf6 in __ppoll (fds=fds@entry=0x7f0ea0000d68,
nfds=nfds@entry=1, timeout=<optimized out>, timeout@entry=0x0,
sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:44
#1 0x00007f0ec0ace4a9 in ppoll (__ss=<optimized out>, __timeout=<optimized
out>, __nfds=<optimized out>, __fds=<optimized out>) at
/usr/include/x86_64-linux-gnu/bits/poll2.h:77
#2 qt_ppoll (timeout_ts=0x0, nfds=1, fds=0x7f0ea0000d68) at
kernel/qcore_unix.cpp:132
#3 qt_ppoll (timeout_ts=0x0, nfds=1, fds=0x7f0ea0000d68) at
kernel/qcore_unix.cpp:129
#4 qt_safe_poll(pollfd*, unsigned long, timespec const*) (fds=0x7f0ea0000d68,
nfds=1, timeout_ts=timeout_ts@entry=0x0) at kernel/qcore_unix.cpp:153
#5 0x00007f0ec0acfa14 in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=<optimized out>, flags=...) at
../../include/QtCore/../../src/corelib/tools/qarraydata.h:211
#6 0x00007f0ec0a794db in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7f0eb37fdd80, flags=..., flags@entry=...) at
../../include/QtCore/../../src/corelib/global/qflags.h:140
#7 0x00007f0ec08b1785 in QThread::exec() (this=<optimized out>) at
../../include/QtCore/../../src/corelib/global/qflags.h:120
#8 0x00007f0ebf5e31a9 in () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#9 0x00007f0ec08b29d2 in QThreadPrivate::start(void*) (arg=0x55dea19c41c0) at
thread/qthread_unix.cpp:361
#10 0x00007f0ebfe70609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#11 0x00007f0ec20df293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 2 (Thread 0x7f0eb9c17700 (LWP 1824)):
#0 0x00007f0ec20d2bf6 in __ppoll (fds=fds@entry=0x7f0eac00b648,
nfds=nfds@entry=1, timeout=<optimized out>, timeout@entry=0x0,
sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:44
#1 0x00007f0ec0ace4a9 in ppoll (__ss=<optimized out>, __timeout=<optimized
out>, __nfds=<optimized out>, __fds=<optimized out>) at
/usr/include/x86_64-linux-gnu/bits/poll2.h:77
#2 qt_ppoll (timeout_ts=0x0, nfds=1, fds=0x7f0eac00b648) at
kernel/qcore_unix.cpp:132
#3 qt_ppoll (timeout_ts=0x0, nfds=1, fds=0x7f0eac00b648) at
kernel/qcore_unix.cpp:129
#4 qt_safe_poll(pollfd*, unsigned long, timespec const*) (fds=0x7f0eac00b648,
nfds=1, timeout_ts=timeout_ts@entry=0x0) at kernel/qcore_unix.cpp:153
#5 0x00007f0ec0acfa14 in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=<optimized out>, flags=...) at
../../include/QtCore/../../src/corelib/tools/qarraydata.h:211
#6 0x00007f0ec0a794db in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7f0eb9c16d70, flags=..., flags@entry=...) at
../../include/QtCore/../../src/corelib/global/qflags.h:140
#7 0x00007f0ec08b1785 in QThread::exec() (this=this@entry=0x7f0ec1b66d80
<(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at
../../include/QtCore/../../src/corelib/global/qflags.h:120
#8 0x00007f0ec1ae3efa in QDBusConnectionManager::run() (this=0x7f0ec1b66d80
<(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at
qdbusconnection.cpp:178
#9 0x00007f0ec08b29d2 in QThreadPrivate::start(void*) (arg=0x7f0ec1b66d80
<(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at
thread/qthread_unix.cpp:361
#10 0x00007f0ebfe70609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#11 0x00007f0ec20df293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 1 (Thread 0x7f0ebb318800 (LWP 1770)):
[KCrash Handler]
#5 0x00007f0ec1db457e in KWin::Workspace::workspaceEvent(xcb_generic_event_t*)
() at /lib/x86_64-linux-gnu/libkwin.so.5
#6 0x00007f0ec0a77d8f in
QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*)
(this=<optimized out>, eventType=..., message=0x7f0eb407b140,
result=0x7fffa4d8e428) at kernel/qabstracteventdispatcher.cpp:484
#7 0x00007f0ebac337b5 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*)
() at /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#8 0x00007f0ebac3478a in
QXcbConnection::processXcbEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at
/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#9 0x00007f0ebac5f6f0 in () at /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#10 0x00007f0ec0a794db in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7fffa4d8e5b0, flags=..., flags@entry=...) at
../../include/QtCore/../../src/corelib/global/qflags.h:140
#11 0x00007f0ec0a81246 in QCoreApplication::exec() () at
../../include/QtCore/../../src/corelib/global/qflags.h:120
#12 0x00007f0ec21b89ef in kdemain () at
/lib/x86_64-linux-gnu/libkdeinit5_kwin_x11.so
#13 0x00007f0ec1fe40b3 in __libc_start_main (main=0x55de9fca3060, argc=1,
argv=0x7fffa4d8e848, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7fffa4d8e838) at ../csu/libc-start.c:308
#14 0x000055de9fca309e in _start ()
[Inferior 1 (process 1770) detached]
Possible duplicates by query: bug 434372, bug 434368, bug 431795, bug 431564,
bug 430945.
Reported using DrKonqi
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