[kde] [Bug 355253] New: kalarm causes akonadi resource crash

[dargaud via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=355253

            Bug ID: 355253
           Summary: kalarm causes akonadi resource crash
           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: kde at gdargaud.net

Application: akonadi_kalarm_resource (4.89.0)

Qt Version: 5.4.2
Operating System: Linux 4.2.0-17-generic x86_64
Distribution: Ubuntu 15.10

-- Information about the crash:
kalarm triggered an alarm.
Crashes every time.
It does not seem to impact much. kalarm itself doesn't crash.
It happens since the upgrade to 15.10 / Plasma5

The crash can be reproduced every time.

-- Backtrace:
Application: Akonadi Resource (akonadi_kalarm_resource), signal: Segmentation
fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f15ff541840 (LWP 2526))]

Thread 2 (Thread 0x7f15fd23d700 (LWP 2550)):
#0  0x00007f160f3d68dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f16076b5bd2 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f16076b774f in xcb_wait_for_event () from
/usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f15ff164a39 in ?? () from
/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so
#4  0x00007f160fce02be in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f160a52c6aa in start_thread (arg=0x7f15fd23d700) at
pthread_create.c:333
#6  0x00007f160f3e1eed in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f15ff541840 (LWP 2526)):
[KCrash Handler]
#6  0x000000000041f257 in KAlarmResource::writeToFile
(this=this at entry=0x11b8770, fileName=...) at
../../../../resources/kalarm/kalarm/kalarmresource.cpp:250
#7  0x0000000000414861 in
Akonadi::SingleFileResource<Akonadi_KAlarm_Resource::Settings>::writeFile
(this=0x11b8770, taskContext=<optimized out>) at
../../../../resources/shared/singlefileresource/singlefileresource.h:257
#8  0x00007f161266f54d in Akonadi::SingleFileResourceBase::qt_static_metacall
(_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized
out>) at moc_singlefileresourcebase.cpp:107
#9  0x00007f160fecac02 in QMetaMethod::invoke(QObject*, Qt::ConnectionType,
QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument,
QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument,
QGenericArgument, QGenericArgument, QGenericArgument) const () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f160fecfd2d in QMetaObject::invokeMethod(QObject*, char const*,
Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument,
QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument,
QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f1612436ae1 in QMetaObject::invokeMethod (val9=..., val8=...,
val7=..., val6=..., val5=..., val4=..., val3=..., val2=..., val1=..., val0=...,
member=<optimized out>, obj=<optimized out>) at
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs.h:407
#12 Akonadi::ResourceScheduler::executeNext (this=0x11d4640) at
../../../../akonadi/src/agentbase/resourcescheduler.cpp:393
#13 0x00007f1612437435 in Akonadi::ResourceScheduler::qt_static_metacall
(_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized
out>) at ./moc_resourcescheduler_p.cpp:175
#14 0x00007f160fef1651 in QObject::event(QEvent*) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f1610ecbb8c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007f1610ed1230 in QApplication::notify(QObject*, QEvent*) () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007f160febff1b in QCoreApplication::notifyInternal(QObject*, QEvent*)
() from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f160fec2057 in QCoreApplicationPrivate::sendPostedEvents(QObject*,
int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f160ff16e73 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f160a00cff7 in g_main_context_dispatch () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f160a00d250 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f160a00d2fc in g_main_context_iteration () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f160ff1727f in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007f160febd75a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f160fec52cc in QCoreApplication::exec() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007f161242321a in Akonadi::ResourceBase::init (r=r at entry=0x11b8770) at
../../../../akonadi/src/agentbase/resourcebase.cpp:602
#27 0x00000000004209c8 in Akonadi::ResourceBase::init<KAlarmResource>
(argc=<optimized out>, argv=<optimized out>) at
/usr/include/KF5/AkonadiAgentBase/resourcebase.h:193
#28 0x00007f160f2fba40 in __libc_start_main (main=0x411b40 <main(int, char**)>,
argc=3, argv=0x7ffd0b25deb8, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7ffd0b25dea8) at libc-start.c:289
#29 0x0000000000411b79 in _start ()

Reported using DrKonqi

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