https://bugs.kde.org/show_bug.cgi?id=452375
Bug ID: 452375 Summary: Latte Crashed (install from Discover app) Product: kwin Version: 5.24.4 Platform: unspecified OS: Linux Status: REPORTED Keywords: drkonqi Severity: crash Priority: NOR Component: general Assignee: kwin-bugs-n...@kde.org Reporter: romanlu...@gmail.com Target Milestone: --- Application: kwin_x11 (5.24.4) Qt Version: 5.15.3 Frameworks Version: 5.92.0 Operating System: Linux 5.13.0-39-generic x86_64 Windowing System: X11 Distribution: KDE neon User - 5.24 DrKonqi: 5.24.4 [KCrashBackend] -- Information about the crash: - What I was doing when the application crashed: trying to close firefox when system hang, make latte crashed sometime, but it restore now - Custom settings of the application: The crash can be reproduced sometimes. -- Backtrace: Application: KWin (kwin_x11), signal: Segmentation fault [New LWP 1130] [New LWP 1131] [New LWP 1133] [New LWP 1141] [New LWP 1168] [New LWP 1205] [New LWP 1209] [New LWP 3335] [New LWP 3336] [New LWP 3337] [New LWP 3338] [New LWP 3339] [New LWP 3355] [New LWP 3356] [New LWP 10559] [New LWP 10560] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". 0x00007f12c9a0a9cf in __GI___poll (fds=0x7ffdaccd3178, nfds=1, timeout=1000) at ../sysdeps/unix/sysv/linux/poll.c:29 __preamble__ [Current thread is 1 (Thread 0x7f12c50869c0 (LWP 1128))] Thread 17 (Thread 0x7f127ffff700 (LWP 10560)): #0 futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55617ed56a20) at ../sysdeps/nptl/futex-internal.h:183 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55617ed569d0, cond=0x55617ed569f8) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=0x55617ed569f8, mutex=0x55617ed569d0) at pthread_cond_wait.c:638 #3 0x00007f12bdffb5eb in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so #4 0x00007f12bdffb1eb in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so #5 0x00007f12ca69c609 in start_thread (arg=<optimized out>) at pthread_create.c:477 #6 0x00007f12c9a17163 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 16 (Thread 0x7f129f5a3700 (LWP 10559)): #0 0x00007f12c9a0aac6 in __ppoll (fds=fds@entry=0x7f1270013ac8, nfds=nfds@entry=1, timeout=<optimized out>, timeout@entry=0x0, sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:44 #1 0x00007f12caaf5559 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=0x7f1270013ac8) at kernel/qcore_unix.cpp:132 #3 qt_ppoll (timeout_ts=0x0, nfds=1, fds=0x7f1270013ac8) at kernel/qcore_unix.cpp:129 #4 qt_safe_poll (fds=0x7f1270013ac8, nfds=1, timeout_ts=timeout_ts@entry=0x0) at kernel/qcore_unix.cpp:155 #5 0x00007f12caaf6c03 in QEventDispatcherUNIX::processEvents (this=<optimized out>, flags=...) at ../../include/QtCore/../../src/corelib/tools/qarraydata.h:211 #6 0x00007f12caa9d87b in QEventLoop::exec (this=this@entry=0x7f129f5a2bc0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141 #7 0x00007f12ca8b7442 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121 #8 0x00007f12cb99ab39 in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5 #9 0x00007f12ca8b8623 in QThreadPrivate::start (arg=0x55617dbb2930) at thread/qthread_unix.cpp:331 #10 0x00007f12ca69c609 in start_thread (arg=<optimized out>) at pthread_create.c:477 #11 0x00007f12c9a17163 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 15 (Thread 0x7f126e262700 (LWP 3356)): #0 futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55617e196aa4) at ../sysdeps/nptl/futex-internal.h:183 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55617e196a50, cond=0x55617e196a78) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=cond@entry=0x55617e196a78, mutex=mutex@entry=0x55617e196a50) at pthread_cond_wait.c:638 #3 0x00007f12ca8be68b in QWaitConditionPrivate::wait (deadline=..., this=0x55617e196a50) at thread/qwaitcondition_unix.cpp:146 #4 QWaitCondition::wait (this=<optimized out>, mutex=0x55617e1968b0, deadline=...) at thread/qwaitcondition_unix.cpp:225 #5 0x00007f12cbd16074 in ?? () from /lib/x86_64-linux-gnu/libQt5Quick.so.5 #6 0x00007f12cbd164e9 in ?? () from /lib/x86_64-linux-gnu/libQt5Quick.so.5 #7 0x00007f12ca8b8623 in QThreadPrivate::start (arg=0x55617e196810) at thread/qthread_unix.cpp:331 #8 0x00007f12ca69c609 in start_thread (arg=<optimized out>) at pthread_create.c:477 #9 0x00007f12c9a17163 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 14 (Thread 0x7f1276ce5700 (LWP 3355)): #0 futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f1284cd0550) at ../sysdeps/nptl/futex-internal.h:183 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f1284cd0500, cond=0x7f1284cd0528) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=0x7f1284cd0528, mutex=0x7f1284cd0500) at pthread_cond_wait.c:638 #3 0x00007f12bdffb5eb in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so #4 0x00007f12bdffb1eb in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so #5 0x00007f12ca69c609 in start_thread (arg=<optimized out>) at pthread_create.c:477 #6 0x00007f12c9a17163 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 13 (Thread 0x7f1285514700 (LWP 3339)): #0 0x00007f12c9a0aac6 in __ppoll (fds=fds@entry=0x7f12680031c8, nfds=nfds@entry=1, timeout=<optimized out>, timeout@entry=0x0, sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:44 #1 0x00007f12caaf5559 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=0x7f12680031c8) at kernel/qcore_unix.cpp:132 #3 qt_ppoll (timeout_ts=0x0, nfds=1, fds=0x7f12680031c8) at kernel/qcore_unix.cpp:129 #4 qt_safe_poll (fds=0x7f12680031c8, nfds=1, timeout_ts=timeout_ts@entry=0x0) at kernel/qcore_unix.cpp:155 #5 0x00007f12caaf6c03 in QEventDispatcherUNIX::processEvents (this=<optimized out>, flags=...) at ../../include/QtCore/../../src/corelib/tools/qarraydata.h:211 #6 0x00007f12caa9d87b in QEventLoop::exec (this=this@entry=0x7f1285513be0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141 #7 0x00007f12ca8b7442 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121 #8 0x00007f12ca8b8623 in QThreadPrivate::start (arg=0x55617df6c5e0) at thread/qthread_unix.cpp:331 #9 0x00007f12ca69c609 in start_thread (arg=<optimized out>) at pthread_create.c:477 #10 0x00007f12c9a17163 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 12 (Thread 0x7f129d322700 (LWP 3338)): #0 futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55617d5b2670) at ../sysdeps/nptl/futex-internal.h:183 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55617d5b2620, cond=0x55617d5b2648) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=0x55617d5b2648, mutex=0x55617d5b2620) at pthread_cond_wait.c:638 #3 0x00007f12bdffb5eb in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so #4 0x00007f12bdffb1eb in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so #5 0x00007f12ca69c609 in start_thread (arg=<optimized out>) at pthread_create.c:477 #6 0x00007f12c9a17163 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 11 (Thread 0x7f129ed6e700 (LWP 3337)): #0 futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55617e025468) at ../sysdeps/nptl/futex-internal.h:183 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55617e025418, cond=0x55617e025440) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=0x55617e025440, mutex=0x55617e025418) at pthread_cond_wait.c:638 #3 0x00007f12bdffb5eb in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so #4 0x00007f12bdffb1eb in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so #5 0x00007f12ca69c609 in start_thread (arg=<optimized out>) at pthread_create.c:477 #6 0x00007f12c9a17163 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 10 (Thread 0x7f12b54dc700 (LWP 3336)): #0 futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55617d57f0c0) at ../sysdeps/nptl/futex-internal.h:183 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55617d57f070, cond=0x55617d57f098) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=0x55617d57f098, mutex=0x55617d57f070) at pthread_cond_wait.c:638 #3 0x00007f12bdffb5eb in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so #4 0x00007f12bdffb1eb in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so #5 0x00007f12ca69c609 in start_thread (arg=<optimized out>) at pthread_create.c:477 #6 0x00007f12c9a17163 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 9 (Thread 0x7f128607f700 (LWP 3335)): #0 0x00007f12c9a0aac6 in __ppoll (fds=fds@entry=0x55617df704d8, nfds=nfds@entry=1, timeout=<optimized out>, timeout@entry=0x0, sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:44 #1 0x00007f12caaf5559 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=0x55617df704d8) at kernel/qcore_unix.cpp:132 #3 qt_ppoll (timeout_ts=0x0, nfds=1, fds=0x55617df704d8) at kernel/qcore_unix.cpp:129 #4 qt_safe_poll (fds=0x55617df704d8, nfds=1, timeout_ts=timeout_ts@entry=0x0) at kernel/qcore_unix.cpp:155 #5 0x00007f12caaf6c03 in QEventDispatcherUNIX::processEvents (this=<optimized out>, flags=...) at ../../include/QtCore/../../src/corelib/tools/qarraydata.h:211 #6 0x00007f12caa9d87b in QEventLoop::exec (this=this@entry=0x7f128607ebe0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141 #7 0x00007f12ca8b7442 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121 #8 0x00007f12ca8b8623 in QThreadPrivate::start (arg=0x55617e1574c0) at thread/qthread_unix.cpp:331 #9 0x00007f12ca69c609 in start_thread (arg=<optimized out>) at pthread_create.c:477 #10 0x00007f12c9a17163 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 8 (Thread 0x7f129db6f700 (LWP 1209)): #0 futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55617d518130) at ../sysdeps/nptl/futex-internal.h:183 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55617d5180e0, cond=0x55617d518108) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=0x55617d518108, mutex=0x55617d5180e0) at pthread_cond_wait.c:638 #3 0x00007f12bdffb5eb in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so #4 0x00007f12bdffb1eb in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so #5 0x00007f12ca69c609 in start_thread (arg=<optimized out>) at pthread_create.c:477 #6 0x00007f12c9a17163 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 7 (Thread 0x7f129e380700 (LWP 1205)): #0 futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55617d31b828) at ../sysdeps/nptl/futex-internal.h:183 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55617d31b7d8, cond=0x55617d31b800) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=0x55617d31b800, mutex=0x55617d31b7d8) at pthread_cond_wait.c:638 #3 0x00007f12bdffb5eb in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so #4 0x00007f12bdffb1eb in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so #5 0x00007f12ca69c609 in start_thread (arg=<optimized out>) at pthread_create.c:477 #6 0x00007f12c9a17163 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 6 (Thread 0x7f12b483f700 (LWP 1168)): #0 std::__atomic_base<int>::load (__m=std::memory_order_acquire, this=0x7f12a4000cfc) at /usr/include/c++/9/bits/atomic_base.h:413 #1 QAtomicOps<int>::loadAcquire<int> (_q_value=...) at ../../include/QtCore/../../src/corelib/thread/qatomic_cxx11.h:251 #2 QBasicAtomicInteger<int>::loadAcquire (this=0x7f12a4000cfc) at ../../include/QtCore/../../src/corelib/thread/qbasicatomic.h:110 #3 QEventLoop::exec (this=this@entry=0x7f12b483ebc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:231 #4 0x00007f12ca8b7442 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121 #5 0x00007f12cb99ab39 in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5 #6 0x00007f12ca8b8623 in QThreadPrivate::start (arg=0x55617d3d60b0) at thread/qthread_unix.cpp:331 #7 0x00007f12ca69c609 in start_thread (arg=<optimized out>) at pthread_create.c:477 #8 0x00007f12c9a17163 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 5 (Thread 0x7f12b67a9700 (LWP 1141)): #0 0x00007f12c9a0aac6 in __ppoll (fds=fds@entry=0x7f12ac0074f8, nfds=nfds@entry=1, timeout=<optimized out>, timeout@entry=0x0, sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:44 #1 0x00007f12caaf5559 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=0x7f12ac0074f8) at kernel/qcore_unix.cpp:132 #3 qt_ppoll (timeout_ts=0x0, nfds=1, fds=0x7f12ac0074f8) at kernel/qcore_unix.cpp:129 #4 qt_safe_poll (fds=0x7f12ac0074f8, nfds=1, timeout_ts=timeout_ts@entry=0x0) at kernel/qcore_unix.cpp:155 #5 0x00007f12caaf6c03 in QEventDispatcherUNIX::processEvents (this=<optimized out>, flags=...) at ../../include/QtCore/../../src/corelib/tools/qarraydata.h:211 #6 0x00007f12caa9d87b in QEventLoop::exec (this=this@entry=0x7f12b67a8bb0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141 #7 0x00007f12ca8b7442 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121 #8 0x00007f12ca60ef4b in ?? () from /lib/x86_64-linux-gnu/libQt5DBus.so.5 #9 0x00007f12ca8b8623 in QThreadPrivate::start (arg=0x7f12ca692d80) at thread/qthread_unix.cpp:331 #10 0x00007f12ca69c609 in start_thread (arg=<optimized out>) at pthread_create.c:477 #11 0x00007f12c9a17163 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 4 (Thread 0x7f12b7bd1700 (LWP 1133)): #0 futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55617ce7cbd0) at ../sysdeps/nptl/futex-internal.h:183 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55617ce7cb80, cond=0x55617ce7cba8) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=0x55617ce7cba8, mutex=0x55617ce7cb80) at pthread_cond_wait.c:638 #3 0x00007f12bdffb5eb in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so #4 0x00007f12bdffb1eb in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so #5 0x00007f12ca69c609 in start_thread (arg=<optimized out>) at pthread_create.c:477 #6 0x00007f12c9a17163 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 3 (Thread 0x7f12b8412700 (LWP 1131)): #0 futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55617cf2dc18) at ../sysdeps/nptl/futex-internal.h:183 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55617cf2dbc8, cond=0x55617cf2dbf0) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=0x55617cf2dbf0, mutex=0x55617cf2dbc8) at pthread_cond_wait.c:638 #3 0x00007f12bdffb5eb in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so #4 0x00007f12bdffb1eb in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so #5 0x00007f12ca69c609 in start_thread (arg=<optimized out>) at pthread_create.c:477 #6 0x00007f12c9a17163 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 2 (Thread 0x7f12c4969700 (LWP 1130)): #0 0x00007f12c9a0a9cf in __GI___poll (fds=0x7f12c4968ae8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007f12cb41fc1a in ?? () from /lib/x86_64-linux-gnu/libxcb.so.1 #2 0x00007f12cb42190a in xcb_wait_for_event () from /lib/x86_64-linux-gnu/libxcb.so.1 #3 0x00007f12c4c611a8 in QXcbEventQueue::run (this=0x55617cd87b90) at qxcbeventqueue.cpp:228 #4 0x00007f12ca8b8623 in QThreadPrivate::start (arg=0x55617cd87b90) at thread/qthread_unix.cpp:331 #5 0x00007f12ca69c609 in start_thread (arg=<optimized out>) at pthread_create.c:477 #6 0x00007f12c9a17163 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 1 (Thread 0x7f12c50869c0 (LWP 1128)): [KCrash Handler] #4 0x000055617e88aa40 in ?? () #5 0x00007f12cc627eaa in KWin::FocusChain::isUsableFocusCandidate (this=0x55617d319a80, c=0x55617e736a60, prev=0x55617e473160) at ./src/focuschain.cpp:206 #6 0x00007f12cc6282f7 in KWin::FocusChain::nextForDesktop (this=0x55617d319a80, reference=reference@entry=0x55617e473160, desktop=<optimized out>, desktop@entry=0x55617d3ba590) at ./src/focuschain.cpp:222 #7 0x00007f12cc5ccdf1 in KWin::Workspace::activateNextClient (this=0x55617d0eccc0, c=<optimized out>, c@entry=0x55617e473160) at ./src/focuschain.h:208 #8 0x00007f12cc5ccf49 in KWin::Workspace::clientHidden (this=<optimized out>, c=c@entry=0x55617e473160) at ./src/activation.cpp:412 #9 0x00007f12cc7373bb in KWin::X11Client::destroyClient (this=0x55617e473160) at ./src/workspace.h:811 #10 0x00007f12cc622d64 in KWin::X11Client::unmapNotifyEvent (e=0x7f12c00443c0, this=0x55617e473160) at ./src/events.cpp:552 #11 KWin::X11Client::unmapNotifyEvent (this=0x55617e473160, e=0x7f12c00443c0) at ./src/events.cpp:531 #12 0x00007f12cc62616b in KWin::X11Client::windowEvent (this=0x55617e473160, e=e@entry=0x7f12c00443c0) at ./src/events.cpp:394 #13 0x00007f12cc626548 in KWin::Workspace::workspaceEvent (this=0x55617d0eccc0, e=e@entry=0x7f12c00443c0) at ./src/events.cpp:167 #14 0x00007f12cc664e94 in KWin::Application::dispatchEvent (this=<optimized out>, event=0x7f12c00443c0) at ./src/workspace.h:811 #15 0x00007f12caa9c20f in QAbstractEventDispatcher::filterNativeEvent (this=<optimized out>, eventType=..., message=message@entry=0x7f12c00443c0, result=result@entry=0x7ffdaccd4308) at kernel/qabstracteventdispatcher.cpp:495 #16 0x00007f12c4c37ac5 in QXcbConnection::handleXcbEvent (this=this@entry=0x55617cd8e990, event=event@entry=0x7f12c00443c0) at qxcbnativeinterface.h:101 #17 0x00007f12c4c38816 in QXcbConnection::processXcbEvents (this=0x55617cd8e990, flags=...) at qxcbconnection.cpp:1020 #18 0x00007f12c4c62590 in QXcbUnixEventDispatcher::processEvents (this=0x55617ce49750, flags=...) at qxcbeventdispatcher.cpp:61 #19 0x00007f12caa9d87b in QEventLoop::exec (this=this@entry=0x7ffdaccd4450, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141 #20 0x00007f12caaa5a24 in QCoreApplication::exec () at ../../include/QtCore/../../src/corelib/global/qflags.h:121 #21 0x000055617b206c73 in main (argc=<optimized out>, argv=0x7ffdaccd46f8) at ./src/main_x11.cpp:482 [Inferior 1 (process 1128) detached] Possible duplicates by query: bug 451693, bug 449762, bug 449101, bug 438315, bug 434372. 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