https://bugs.kde.org/show_bug.cgi?id=412178
Bug ID: 412178 Summary: crash after reconnecting external monitor Product: kwin Version: 5.16.5 Platform: Neon Packages OS: Linux Status: REPORTED Keywords: drkonqi Severity: crash Priority: NOR Component: general Assignee: kwin-bugs-n...@kde.org Reporter: t...@tim-richardson.net Target Milestone: --- Application: kwin_x11 (5.16.5) Qt Version: 5.12.3 Frameworks Version: 5.62.0 Operating System: Linux 5.0.0-29-generic x86_64 Distribution: KDE neon User Edition 5.16 -- Information about the crash: - What I was doing when the application crashed: - Unusual behavior I noticed: Laptop resumed from suspend, but one of the external monitors did not wake up. I disconnected it from the thunderbolt port and reconnected it; Kwin crashed (hence this report) but the external monitor did work. The crash does not seem to be reproducible. -- 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 0x7f1de9266d00 (LWP 3019))] Thread 6 (Thread 0x7f1db0b9c700 (LWP 3377)): #0 0x00007f1de1b499f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f1de5103fb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88 #1 0x00007f1de1b499f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f1de5103f68, cond=0x7f1de5103f90) at pthread_cond_wait.c:502 #2 0x00007f1de1b499f3 in __pthread_cond_wait (cond=0x7f1de5103f90, mutex=0x7f1de5103f68) at pthread_cond_wait.c:655 #3 0x00007f1de4e0d844 in () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5 #4 0x00007f1de4e0d889 in () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5 #5 0x00007f1de1b436db in start_thread (arg=0x7f1db0b9c700) at pthread_create.c:463 #6 0x00007f1de8bdf88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 5 (Thread 0x7f1db1b9e700 (LWP 3343)): #0 0x00007f1de1b499f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55df5ae3d328) at ../sysdeps/unix/sysv/linux/futex-internal.h:88 #1 0x00007f1de1b499f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55df5ae3d2d8, cond=0x55df5ae3d300) at pthread_cond_wait.c:502 #2 0x00007f1de1b499f3 in __pthread_cond_wait (cond=0x55df5ae3d300, mutex=0x55df5ae3d2d8) at pthread_cond_wait.c:655 #3 0x00007f1db269b91b in () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so #4 0x00007f1db269b527 in () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so #5 0x00007f1de1b436db in start_thread (arg=0x7f1db1b9e700) at pthread_create.c:463 #6 0x00007f1de8bdf88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 4 (Thread 0x7f1dc6579700 (LWP 3330)): #0 0x00007f1de8bd2cf6 in __GI_ppoll (fds=fds@entry=0x7f1db4000d28, nfds=nfds@entry=1, timeout=<optimized out>, timeout@entry=0x0, sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39 #1 0x00007f1de6126ab1 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 0x00007f1de6126ab1 in qt_ppoll (timeout_ts=0x0, nfds=1, fds=0x7f1db4000d28) at kernel/qcore_unix.cpp:132 #3 0x00007f1de6126ab1 in qt_safe_poll(pollfd*, unsigned long, timespec const*) (fds=0x7f1db4000d28, nfds=1, timeout_ts=timeout_ts@entry=0x0) at kernel/qcore_unix.cpp:153 #4 0x00007f1de61281be in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=<optimized out>, flags=...) at kernel/qeventdispatcher_unix.cpp:500 #5 0x00007f1de60cc03a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f1dc6578d00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225 #6 0x00007f1de5ef34ca in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:531 #7 0x00007f1de053a115 in () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #8 0x00007f1de5ef4c72 in QThreadPrivate::start(void*) (arg=0x55df5ae1c190) at thread/qthread_unix.cpp:361 #9 0x00007f1de1b436db in start_thread (arg=0x7f1dc6579700) at pthread_create.c:463 #10 0x00007f1de8bdf88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 3 (Thread 0x7f1dcdb12700 (LWP 3100)): #0 0x00007f1de8bd2cf6 in __GI_ppoll (fds=fds@entry=0x7f1dc0010e88, nfds=nfds@entry=1, timeout=<optimized out>, timeout@entry=0x0, sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39 #1 0x00007f1de6126ab1 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 0x00007f1de6126ab1 in qt_ppoll (timeout_ts=0x0, nfds=1, fds=0x7f1dc0010e88) at kernel/qcore_unix.cpp:132 #3 0x00007f1de6126ab1 in qt_safe_poll(pollfd*, unsigned long, timespec const*) (fds=0x7f1dc0010e88, nfds=1, timeout_ts=timeout_ts@entry=0x0) at kernel/qcore_unix.cpp:153 #4 0x00007f1de61281be in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=<optimized out>, flags=...) at kernel/qeventdispatcher_unix.cpp:500 #5 0x00007f1de60cc03a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f1dcdb11cf0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225 #6 0x00007f1de5ef34ca in QThread::exec() (this=this@entry=0x7f1ddf61ed80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread.cpp:531 #7 0x00007f1ddf3a7015 in QDBusConnectionManager::run() (this=0x7f1ddf61ed80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:178 #8 0x00007f1de5ef4c72 in QThreadPrivate::start(void*) (arg=0x7f1ddf61ed80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:361 #9 0x00007f1de1b436db in start_thread (arg=0x7f1dcdb12700) at pthread_create.c:463 #10 0x00007f1de8bdf88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 2 (Thread 0x7f1dcf94e700 (LWP 3042)): #0 0x00007f1de8bd2bf9 in __GI___poll (fds=0x7f1dcf94dc28, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007f1de5c30747 in () at /usr/lib/x86_64-linux-gnu/libxcb.so.1 #2 0x00007f1de5c3236a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1 #3 0x00007f1dd0c89578 in QXcbEventQueue::run() (this=0x55df5ab87030) at qxcbeventqueue.cpp:228 #4 0x00007f1de5ef4c72 in QThreadPrivate::start(void*) (arg=0x55df5ab87030) at thread/qthread_unix.cpp:361 #5 0x00007f1de1b436db in start_thread (arg=0x7f1dcf94e700) at pthread_create.c:463 #6 0x00007f1de8bdf88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 1 (Thread 0x7f1de9266d00 (LWP 3019)): [KCrash Handler] #6 0x00007f1de86ae968 in std::__atomic_base<int>::load(std::memory_order) const (__m=std::memory_order_relaxed, this=0x21) at /usr/include/c++/7/bits/atomic_base.h:396 #7 0x00007f1de86ae968 in QAtomicOps<int>::load<int>(std::atomic<int> const&) (_q_value=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qatomic_cxx11.h:227 #8 0x00007f1de86ae968 in QBasicAtomicInteger<int>::load() const (this=0x21) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qbasicatomic.h:103 #9 0x00007f1de86ae968 in QtPrivate::RefCount::isShared() const (this=0x21) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qrefcount.h:101 #10 0x00007f1de86ae968 in QMap<KWin::Group*, KWin::Layer>::detach() (this=0x55df5b44da38) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qmap.h:364 #11 0x00007f1de86ae968 in QMap<KWin::Group*, KWin::Layer>::find(KWin::Group* const&) (akey=<optimized out>, this=0x55df5b44da38) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qmap.h:884 #12 0x00007f1de86ae968 in KWin::Workspace::constrainedStackingOrder() (this=this@entry=0x55df5ac8dca0) at ./layers.cpp:519 #13 0x00007f1de86af468 in KWin::Workspace::updateStackingOrder(bool) (this=0x55df5ac8dca0, propagate_new_clients=propagate_new_clients@entry=false) at ./layers.cpp:123 #14 0x00007f1de86ee595 in KWin::Client::setGeometry(int, int, int, int, KWin::AbstractClient::ForceGeometry_t) (this=0x55df5b42e520, x=<optimized out>, y=<optimized out>, w=3840, h=2160, force=<optimized out>) at ./geometry.cpp:1999 #15 0x00007f1de8800d35 in KWin::AbstractClient::setGeometry(QRect const&, KWin::AbstractClient::ForceGeometry_t) (force=KWin::AbstractClient::NormalGeometrySet, r=..., this=0x55df5b42e520) at ./obj-x86_64-linux-gnu/kwin_autogen/EWIEGA46WW/../../../abstract_client.h:1285 #16 0x00007f1de8800d35 in KWin::AbstractClient::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) (_o=_o@entry=0x55df5b42e520, _c=_c@entry=QMetaObject::WriteProperty, _id=_id@entry=28, _a=_a@entry=0x7ffe76efb220) at ./obj-x86_64-linux-gnu/kwin_autogen/EWIEGA46WW/moc_abstract_client.cpp:886 #17 0x00007f1de8806613 in KWin::AbstractClient::qt_metacall(QMetaObject::Call, int, void**) (this=this@entry=0x55df5b42e520, _c=_c@entry=QMetaObject::WriteProperty, _id=28, _a=_a@entry=0x7ffe76efb220) at ./obj-x86_64-linux-gnu/kwin_autogen/EWIEGA46WW/moc_abstract_client.cpp:935 #18 0x00007f1de8806675 in KWin::Client::qt_metacall(QMetaObject::Call, int, void**) (this=0x55df5b42e520, _c=QMetaObject::WriteProperty, _id=<optimized out>, _a=0x7ffe76efb220) at ./obj-x86_64-linux-gnu/kwin_autogen/EWIEGA46WW/moc_client.cpp:277 #19 0x00007f1de049f0e2 in () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #20 0x00007f1de049cac6 in QQmlPropertyPrivate::write(QObject*, QQmlPropertyData const&, QVariant const&, QQmlContextData*, QFlags<QQmlPropertyData::WriteFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #21 0x00007f1de03e752b in QV4::QObjectWrapper::setProperty(QV4::ExecutionEngine*, QObject*, QQmlPropertyData*, QV4::Value const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #22 0x00007f1de03e84ee in QV4::QObjectWrapper::setQmlProperty(QV4::ExecutionEngine*, QQmlContextData*, QObject*, QV4::String*, QV4::QObjectWrapper::RevisionMode, QV4::Value const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #23 0x00007f1de03e8689 in QV4::QObjectWrapper::virtualPut(QV4::Managed*, QV4::PropertyKey, QV4::Value const&, QV4::Value*) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #24 0x00007f1de0465229 in QV4::Runtime::method_storeProperty(QV4::ExecutionEngine*, QV4::Value const&, int, QV4::Value const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #25 0x00007f1dc401bab9 in () #26 0x0000000000000000 in () Possible duplicates by query: bug 410345, bug 409515, bug 409231, bug 409110, bug 402911. 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