https://bugs.kde.org/show_bug.cgi?id=410410
Bug ID: 410410
Summary: KWin crash when mouse move to the hot corner to
present all windows
Product: kwin
Version: 5.12.7
Platform: Ubuntu Packages
OS: Linux
Status: REPORTED
Keywords: drkonqi
Severity: crash
Priority: NOR
Component: general
Assignee: kwin-bugs-n...@kde.org
Reporter: tohyif...@gmail.com
Target Milestone: ---
Application: kwin_x11 (5.12.7)
Qt Version: 5.9.5
Frameworks Version: 5.44.0
Operating System: Linux 4.15.0-52-generic x86_64
Distribution: Ubuntu 18.04.2 LTS
-- Information about the crash:
- What I was doing when the application crashed:
Basically as title said, when i move my mouse to the corner that shows all
desktop windows, the kwin will crash. When it happened it appears that there is
a significant CPU load (system a bit sluggish).
The crash can be reproduced sometimes.
-- 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 0x7fd08032dcc0 (LWP 1758))]
Thread 6 (Thread 0x7fd05efd0700 (LWP 6983)):
#0 0x00007fd07fc8bcf6 in __GI_ppoll (fds=0x7fd050001798, nfds=1,
timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1 0x00007fd07d08d5c1 in qt_safe_poll(pollfd*, unsigned long, timespec const*)
() from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2 0x00007fd07d08ecde in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3 0x00007fd07d0369ea in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007fd07ce5522a in QThread::exec() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007fd0777dd6f5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#6 0x00007fd07ce5a16d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7 0x00007fd078cf16db in start_thread (arg=0x7fd05efd0700) at
pthread_create.c:463
#8 0x00007fd07fc9888f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 5 (Thread 0x7fd046739700 (LWP 1896)):
#0 0x00007fd078cf79f3 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x7fd07c28efb8) at
../sysdeps/unix/sysv/linux/futex-internal.h:88
#1 __pthread_cond_wait_common (abstime=0x0, mutex=0x7fd07c28ef68,
cond=0x7fd07c28ef90) at pthread_cond_wait.c:502
#2 __pthread_cond_wait (cond=0x7fd07c28ef90, mutex=0x7fd07c28ef68) at
pthread_cond_wait.c:655
#3 0x00007fd07bf985f4 in ?? () from
/usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#4 0x00007fd07bf98639 in ?? () from
/usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#5 0x00007fd078cf16db in start_thread (arg=0x7fd046739700) at
pthread_create.c:463
#6 0x00007fd07fc9888f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 4 (Thread 0x7fd04d1ec700 (LWP 1891)):
#0 0x00007fd078cf79f3 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x5654fdb06bb8) at
../sysdeps/unix/sysv/linux/futex-internal.h:88
#1 __pthread_cond_wait_common (abstime=0x0, mutex=0x5654fdb06b68,
cond=0x5654fdb06b90) at pthread_cond_wait.c:502
#2 __pthread_cond_wait (cond=0x5654fdb06b90, mutex=0x5654fdb06b68) at
pthread_cond_wait.c:655
#3 0x00007fd04de8adcb in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4 0x00007fd04de8aaf7 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5 0x00007fd078cf16db in start_thread (arg=0x7fd04d1ec700) at
pthread_create.c:463
#6 0x00007fd07fc9888f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 3 (Thread 0x7fd05e370700 (LWP 1797)):
#0 __libc_disable_asynccancel () at
../sysdeps/unix/sysv/linux/x86_64/cancellation.S:98
#1 0x00007fd07fc8bd0a in __GI_ppoll (fds=<optimized out>, nfds=1,
timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#2 0x00007fd07d08d5c1 in qt_safe_poll(pollfd*, unsigned long, timespec const*)
() from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3 0x00007fd07d08ecde in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007fd07d0369ea in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007fd07ce5522a in QThread::exec() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6 0x00007fd0777dd6f5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7 0x00007fd07ce5a16d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8 0x00007fd078cf16db in start_thread (arg=0x7fd05e370700) at
pthread_create.c:463
#9 0x00007fd07fc9888f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 2 (Thread 0x7fd05ffff700 (LWP 1792)):
#0 0x00007fd07fc8bcf6 in __GI_ppoll (fds=0x7fd05800b378, nfds=1,
timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1 0x00007fd07d08d5c1 in qt_safe_poll(pollfd*, unsigned long, timespec const*)
() from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2 0x00007fd07d08ecde in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3 0x00007fd07d0369ea in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007fd07ce5522a in QThread::exec() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007fd0766b6d45 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#6 0x00007fd07ce5a16d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7 0x00007fd078cf16db in start_thread (arg=0x7fd05ffff700) at
pthread_create.c:463
#8 0x00007fd07fc9888f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 1 (Thread 0x7fd08032dcc0 (LWP 1758)):
[KCrash Handler]
#6 0x00005654fe1c00c0 in ?? ()
#7 0x00007fd07f7933aa in KWin::Workspace::workspaceEvent(xcb_generic_event_t*)
() from /usr/lib/x86_64-linux-gnu/libkwin.so.5
#8 0x00007fd07d03558f in
QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9 0x00007fd067889820 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*)
() from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#10 0x00007fd06788a4ac in QXcbConnection::processXcbEvents() () from
/usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#11 0x00007fd07d068122 in QObject::event(QEvent*) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fd07ddb682c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#13 0x00007fd07ddbe0f4 in QApplication::notify(QObject*, QEvent*) () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#14 0x00007fd07d0389a8 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007fd07d03b11d in QCoreApplicationPrivate::sendPostedEvents(QObject*,
int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007fd07d08eaf4 in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007fd0678eb5cd in ?? () from
/usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#18 0x00007fd07d0369ea in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007fd07d03fa84 in QCoreApplication::exec() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007fd07ff70dbb in kdemain () from
/usr/lib/x86_64-linux-gnu/libkdeinit5_kwin_x11.so
#21 0x00007fd07fb98b97 in __libc_start_main (main=0x5654fcd4c730, argc=1,
argv=0x7ffea7bb9158, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7ffea7bb9148) at ../csu/libc-start.c:310
#22 0x00005654fcd4c76a in _start ()
The reporter indicates this bug may be a duplicate of or related to bug 405829,
bug 404884, bug 402769.
Possible duplicates by query: bug 409815, bug 409715, bug 409223, bug 406784,
bug 406391.
Reported using DrKonqi
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