[kde] [Bug 349418] New: KWin crashes randomly
Ilya V. Portnov
portnov at bk.ru
Sat Jun 20 17:16:50 BST 2015
https://bugs.kde.org/show_bug.cgi?id=349418
Bug ID: 349418
Summary: KWin crashes randomly
Product: kde
Version: unspecified
Platform: unspecified
OS: Linux
Status: UNCONFIRMED
Keywords: drkonqi
Severity: crash
Priority: NOR
Component: general
Assignee: unassigned-bugs at kde.org
Reporter: portnov at bk.ru
Application: kwin_x11 (5.2.2)
Qt Version: 5.4.1
Operating System: Linux 3.19.0-16-generic x86_64
Distribution: Ubuntu 15.04
-- Information about the crash:
KWin sometimes crashes when I switch between windows. It can crash if I use
Alt-Tab or if I switch with mouse. This is fresh installation of Kubuntu 15.04.
Maybe it is important: this is a laptop with NVidia Optimus,
:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor
Graphics Controller (rev 09)
1:00.0 3D controller: NVIDIA Corporation GK208M [GeForce GT 740M] (rev ff)
I'm using NVidia binary drivers, version 346.59-0ubuntu1 from kubuntu repos.
Maybe it's important: I'm also using my KWinscript:
https://github.com/portnov/wacom-intuos-pro-scripts/blob/master/kde5/wacom-auto-profile/contents/code/main.js
Maybe it contains some errors? If so, please explain how to find&fix the error.
Anyway, crashing KWin because of wrong kwinscript is a bad idea.
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 0x7fa760fb0800 (LWP 364))]
Thread 4 (Thread 0x7fa743558700 (LWP 404)):
#0 0x00007fa760a83743 in select () at ../sysdeps/unix/syscall-template.S:81
#1 0x00007fa75f2cd101 in qt_safe_select (nfds=15,
fdread=fdread at entry=0x7fa738000a78, fdwrite=fdwrite at entry=0x7fa738000d08,
fdexcept=fdexcept at entry=0x7fa738000f98, orig_timeout=orig_timeout at entry=0x0) at
kernel/qcore_unix.cpp:75
#2 0x00007fa75f2cecd2 in select (timeout=0x0, exceptfds=0x7fa738000f98,
writefds=0x7fa738000d08, readfds=0x7fa738000a78, nfds=<optimized out>,
this=0x7fa7380008c0) at kernel/qeventdispatcher_unix.cpp:320
#3 QEventDispatcherUNIXPrivate::doSelect (this=this at entry=0x7fa7380008e0,
flags=..., flags at entry=..., timeout=timeout at entry=0x0) at
kernel/qeventdispatcher_unix.cpp:196
#4 0x00007fa75f2cf275 in QEventDispatcherUNIX::processEvents
(this=0x7fa7380008c0, flags=...) at kernel/qeventdispatcher_unix.cpp:607
#5 0x00007fa75f2763e2 in QEventLoop::exec (this=this at entry=0x7fa743557da0,
flags=..., flags at entry=...) at kernel/qeventloop.cpp:204
#6 0x00007fa75f035b44 in QThread::exec (this=<optimized out>) at
thread/qthread.cpp:503
#7 0x00007fa758ee8f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8 0x00007fa75f03ab0e in QThreadPrivate::start (arg=0x1f8df00) at
thread/qthread_unix.cpp:337
#9 0x00007fa7580b56aa in start_thread (arg=0x7fa743558700) at
pthread_create.c:333
#10 0x00007fa760a8ceed in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109
Thread 3 (Thread 0x7fa7336ce700 (LWP 419)):
#0 pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1 0x00007fa75de3f644 in ?? () from
/usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2 0x00007fa75de3f689 in ?? () from
/usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3 0x00007fa7580b56aa in start_thread (arg=0x7fa7336ce700) at
pthread_create.c:333
#4 0x00007fa760a8ceed in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109
Thread 2 (Thread 0x7fa730e3f700 (LWP 1801)):
#0 __libc_enable_asynccancel () at
../sysdeps/unix/sysv/linux/x86_64/cancellation.S:65
#1 0x00007fa760a83735 in select () at ../sysdeps/unix/syscall-template.S:81
#2 0x00007fa75f2cd101 in qt_safe_select (nfds=13,
fdread=fdread at entry=0x7fa6a4074e48, fdwrite=fdwrite at entry=0x7fa6a40750d8,
fdexcept=fdexcept at entry=0x7fa6a4075368, orig_timeout=orig_timeout at entry=0x0) at
kernel/qcore_unix.cpp:75
#3 0x00007fa75f2cecd2 in select (timeout=0x0, exceptfds=0x7fa6a4075368,
writefds=0x7fa6a40750d8, readfds=0x7fa6a4074e48, nfds=<optimized out>,
this=0x7fa6a4051280) at kernel/qeventdispatcher_unix.cpp:320
#4 QEventDispatcherUNIXPrivate::doSelect (this=this at entry=0x7fa6a4074cb0,
flags=..., flags at entry=..., timeout=timeout at entry=0x0) at
kernel/qeventdispatcher_unix.cpp:196
#5 0x00007fa75f2cf275 in QEventDispatcherUNIX::processEvents
(this=0x7fa6a4051280, flags=...) at kernel/qeventdispatcher_unix.cpp:607
#6 0x00007fa75f2763e2 in QEventLoop::exec (this=this at entry=0x7fa730e3eda0,
flags=..., flags at entry=...) at kernel/qeventloop.cpp:204
#7 0x00007fa75f035b44 in QThread::exec (this=<optimized out>) at
thread/qthread.cpp:503
#8 0x00007fa758ee8f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9 0x00007fa75f03ab0e in QThreadPrivate::start (arg=0x39a8fd0) at
thread/qthread_unix.cpp:337
#10 0x00007fa7580b56aa in start_thread (arg=0x7fa730e3f700) at
pthread_create.c:333
#11 0x00007fa760a8ceed in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109
Thread 1 (Thread 0x7fa760fb0800 (LWP 364)):
[KCrash Handler]
#6 0x00007fa75de85060 in QScriptEngine::newVariant(QVariant const&) () from
/usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#7 0x00007fa76069b274 in KWin::AbstractScript::slotPendingDBusCall
(this=0x2c87030, watcher=0x42bf5e0) at ../scripting/scripting.cpp:323
#8 0x00007fa7606eefcc in KWin::AbstractScript::qt_static_metacall
(_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized
out>) at moc_scripting.cpp:104
#9 0x00007fa75f2a99c9 in QMetaObject::activate (sender=0x42bf5e0,
signalOffset=<optimized out>, local_signal_index=local_signal_index at entry=0,
argv=argv at entry=0x7ffe68a447b0) at kernel/qobject.cpp:3716
#10 0x00007fa75f2aa057 in QMetaObject::activate (sender=<optimized out>,
m=m at entry=0x7fa76113d500 <QDBusPendingCallWatcher::staticMetaObject>,
local_signal_index=local_signal_index at entry=0, argv=argv at entry=0x7ffe68a447b0)
at kernel/qobject.cpp:3582
#11 0x00007fa761121a4f in QDBusPendingCallWatcher::finished (this=<optimized
out>, _t1=0x42bf5e0) at .moc/moc_qdbuspendingcall.cpp:147
#12 0x00007fa761123155 in _q_finished (this=<optimized out>) at
qdbuspendingcall.cpp:487
#13 QDBusPendingCallWatcher::qt_static_metacall (_o=<optimized out>,
_c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at
.moc/moc_qdbuspendingcall.cpp:79
#14 0x00007fa75f2aa73a in QObject::event (this=0x42bf5e0, e=<optimized out>) at
kernel/qobject.cpp:1245
#15 0x00007fa75fb82b2c in QApplicationPrivate::notify_helper (this=0x1d8d120,
receiver=0x42bf5e0, e=0x36fc8b0) at kernel/qapplication.cpp:3720
#16 0x00007fa75fb88000 in QApplication::notify (this=0x7ffe68a44d20,
receiver=0x42bf5e0, e=0x36fc8b0) at kernel/qapplication.cpp:3503
#17 0x00007fa75f278c2b in QCoreApplication::notifyInternal
(this=0x7ffe68a44d20, receiver=0x42bf5e0, event=event at entry=0x36fc8b0) at
kernel/qcoreapplication.cpp:935
#18 0x00007fa75f27ac9b in sendEvent (event=0x36fc8b0, receiver=<optimized out>)
at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:228
#19 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver at entry=0x0,
event_type=event_type at entry=0, data=0x1d7d2f0) at
kernel/qcoreapplication.cpp:1552
#20 0x00007fa75f2cf112 in QEventDispatcherUNIX::processEvents (this=0x1dd0ca0,
flags=flags at entry=...) at kernel/qeventdispatcher_unix.cpp:579
#21 0x00007fa74bd7496d in QUnixEventDispatcherQPA::processEvents
(this=<optimized out>, flags=...) at
eventdispatchers/qunixeventdispatcher.cpp:62
#22 0x00007fa75f2763e2 in QEventLoop::exec (this=this at entry=0x7ffe68a44c40,
flags=..., flags at entry=...) at kernel/qeventloop.cpp:204
#23 0x00007fa75f27e02c in QCoreApplication::exec () at
kernel/qcoreapplication.cpp:1188
#24 0x00007fa75f5bd31c in QGuiApplication::exec () at
kernel/qguiapplication.cpp:1510
#25 0x00007fa75fb7e7a5 in QApplication::exec () at kernel/qapplication.cpp:2956
#26 0x00007fa760d548c3 in kdemain (argc=1, argv=0x7ffe68a44e78) at
../main_x11.cpp:294
#27 0x00007fa7609a6a40 in __libc_start_main (main=0x400790 <main(int, char**)>,
argc=3, argv=0x7ffe68a44e78, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7ffe68a44e68) at libc-start.c:289
#28 0x00000000004007c9 in _start ()
Reported using DrKonqi
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