Bug 414317

Application: kwin_x11 (5.16.5)

Qt Version: 5.12.4
Frameworks Version: 5.62.0
Operating System: Linux 5.0.0-30-generic x86_64
Distribution: Ubuntu 19.10

-- Information about the crash:
- What I was doing when the application crashed: it was simplr reboot after update. after kwin cash plasmasgell too/ thx for your support

-- 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 0x7f70bd27dd00 (LWP 16562))]

Thread 6 (Thread 0x7f709a739700 (LWP 16957)):
#0  0x00007f70c1f882c6 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f70c2596fb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  0x00007f70c1f882c6 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f70c2596f68, cond=0x7f70c2596f90) at pthread_cond_wait.c:508
#2  0x00007f70c1f882c6 in __pthread_cond_wait (cond=0x7f70c2596f90, mutex=0x7f70c2596f68) at pthread_cond_wait.c:638
#3  0x00007f70c24a008a in  () at /lib/x86_64-linux-gnu/libQt5Script.so.5
#4  0x00007f70c24a00af in  () at /lib/x86_64-linux-gnu/libQt5Script.so.5
#5  0x00007f70c1f81669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#6  0x00007f70c417a323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f70ace02700 (LWP 16809)):
#0  0x00007f70c1f882c6 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5621603b2a78) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  0x00007f70c1f882c6 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5621603b2a28, cond=0x5621603b2a50) at pthread_cond_wait.c:508
#2  0x00007f70c1f882c6 in __pthread_cond_wait (cond=0x5621603b2a50, mutex=0x5621603b2a28) at pthread_cond_wait.c:638
#3  0x00007f70ad47397b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f70ad47359b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f70c1f81669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#6  0x00007f70c417a323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f70aff29700 (LWP 16789)):
#0  0x00007f70c2a1f4e0 in QArrayData::allocate(unsigned long, unsigned long, unsigned long, QFlags<QArrayData::AllocationOption>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007f70c2c2fd0c in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f70c2bd963b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f70c2a12a75 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f70c1721319 in  () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#5  0x00007f70c2a13cc2 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f70c1f81669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#7  0x00007f70c417a323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f70b62af700 (LWP 16632)):
#0  0x00007f70c2c2fc67 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007f70c2bd963b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f70c2a12a75 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f70c1160efa in  () at /lib/x86_64-linux-gnu/libQt5DBus.so.5
#4  0x00007f70c2a13cc2 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f70c1f81669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#6  0x00007f70c417a323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f70bc88d700 (LWP 16599)):
#0  0x00007f70c416dc2f in __GI___poll (fds=0x7f70bc88cc28, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f70c2937917 in  () at /lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f70c293953a in xcb_wait_for_event () at /lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f70bcb9a288 in  () at /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f70c2a13cc2 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f70c1f81669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#6  0x00007f70c417a323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f70bd27dd00 (LWP 16562)):
[KCrash Handler]
#6  0x00007f70c3e79f93 in KWin::Workspace::clientArea(KWin::clientAreaOption, int, int) const () at /lib/x86_64-linux-gnu/libkwin.so.5
#7  0x00007f70c3e60a5e in KWin::Client::manage(unsigned int, bool) () at /lib/x86_64-linux-gnu/libkwin.so.5
#8  0x00007f70c3dbe849 in KWin::Workspace::createClient(unsigned int, bool) () at /lib/x86_64-linux-gnu/libkwin.so.5
#9  0x00007f70c3e4c4ef in KWin::Workspace::workspaceEvent(xcb_generic_event_t*) () at /lib/x86_64-linux-gnu/libkwin.so.5
#10 0x00007f70c2bd7eef in QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f70bcb6f855 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () at /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#12 0x00007f70bcb7082a in QXcbConnection::processXcbEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#13 0x00007f70bcb9b650 in  () at /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#14 0x00007f70c2bd963b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f70c2be13a6 in QCoreApplication::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007f70c425387d in kdemain () at /lib/x86_64-linux-gnu/libkdeinit5_kwin_x11.so
#17 0x00007f70c407f1e3 in __libc_start_main (main=0x56215e5a4060, argc=3, argv=0x7ffdca5e5928, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffdca5e5918) at ../csu/libc-start.c:308
#18 0x000056215e5a409e in _start ()
[Inferior 1 (process 16562) detached]

Possible duplicates by query: bug 404125, bug 404090.

Reported using DrKonqi