https://bugs.kde.org/show_bug.cgi?id=500326
Bug ID: 500326
Summary: Things crash in QArrayDataPointer<QInputDevice
const*>::data under various circumstances with Qt
6.8.2
Classification: I don't know
Product: kde
Version: unspecified
Platform: Other
OS: Linux
Status: REPORTED
Severity: crash
Priority: NOR
Component: general
Assignee: unassigned-b...@kde.org
Reporter: n...@kde.org
Target Milestone: ---
Example backtrace from Bug 499919, reproducible by changing something in the
Accessibility KCM and applying:
#5 QArrayDataPointer<QInputDevice const*>::data (this=0x0) at
/usr/src/debug/qt6-qtbase-6.8.2-2.fc41.x86_64/src/corelib/tools/qarraydatapointer.h:120
#6 QArrayDataPointer<QInputDevice const*>::constEnd (this=0x0) at
/usr/src/debug/qt6-qtbase-6.8.2-2.fc41.x86_64/src/corelib/tools/qarraydatapointer.h:127
#7 QList<QInputDevice const*>::cend (this=0x0) at
/usr/src/debug/qt6-qtbase-6.8.2-2.fc41.x86_64/src/corelib/tools/qlist.h:644
#8 QtPrivate::sequential_erase_one<QList<QInputDevice const*>, QInputDevice
const*> (c=..., t=<synthetic pointer>: <optimized out>) at
/usr/src/debug/qt6-qtbase-6.8.2-2.fc41.x86_64/src/corelib/tools/qcontainertools_impl.h:389
#9 QList<QInputDevice const*>::removeOne<QInputDevice const*> (this=0x0,
t=<synthetic pointer>: <optimized out>) at
/usr/src/debug/qt6-qtbase-6.8.2-2.fc41.x86_64/src/corelib/tools/qlist.h:613
#10 QInputDevicePrivate::unregisterDevice (dev=dev@entry=0x55b5d53f0a50) at
/usr/src/debug/qt6-qtbase-6.8.2-2.fc41.x86_64/src/gui/kernel/qinputdevice.cpp:360
#11 0x00007f528d2fe793 in QInputDevice::~QInputDevice
(this=this@entry=0x55b5d53f0a50, __in_chrg=<optimized out>) at
/usr/src/debug/qt6-qtbase-6.8.2-2.fc41.x86_64/src/gui/kernel/qinputdevice.cpp:110
#12 0x00007f528d330a97 in QPointingDevice::~QPointingDevice
(this=this@entry=0x55b5d53f0a50, __in_chrg=<optimized out>) at
/usr/src/debug/qt6-qtbase-6.8.2-2.fc41.x86_64/src/gui/kernel/qpointingdevice.cpp:168
#13 0x00007f527b182fcf in QXcbScrollingDevice::~QXcbScrollingDevice
(this=0x55b5d53f0a50, __in_chrg=<optimized out>) at
/usr/src/debug/qt6-qtbase-6.8.2-2.fc41.x86_64/src/plugins/platforms/xcb/qxcbscrollingdevice_p.h:29
#14 QXcbScrollingDevice::~QXcbScrollingDevice (this=0x55b5d53f0a50,
__in_chrg=<optimized out>) at
/usr/src/debug/qt6-qtbase-6.8.2-2.fc41.x86_64/src/plugins/platforms/xcb/qxcbscrollingdevice_p.h:29
#15 0x00007f528cb4b8ae in QObject::event (this=0x55b5d53f0a50,
e=0x55b5d53f0a70) at
/usr/src/debug/qt6-qtbase-6.8.2-2.fc41.x86_64/src/corelib/kernel/qobject.cpp:1403
#16 0x00007f528de3d9b8 in QApplicationPrivate::notify_helper (this=<optimized
out>, receiver=0x55b5d53f0a50, e=0x55b5d53f0a70) at
/usr/src/debug/qt6-qtbase-6.8.2-2.fc41.x86_64/src/widgets/kernel/qapplication.cpp:3296
#17 0x00007f528caf3590 in QCoreApplication::notifyInternal2
(receiver=0x55b5d53f0a50, event=0x55b5d53f0a70) at
/usr/src/debug/qt6-qtbase-6.8.2-2.fc41.x86_64/src/corelib/kernel/qcoreapplication.cpp:1172
#18 0x00007f528caf37ed in QCoreApplication::sendEvent (receiver=<optimized
out>, event=<optimized out>) at
/usr/src/debug/qt6-qtbase-6.8.2-2.fc41.x86_64/src/corelib/kernel/qcoreapplication.cpp:1612
#19 0x00007f528caf6f51 in QCoreApplicationPrivate::sendPostedEvents
(receiver=0x0, event_type=52, data=0x55b5d53af9c0) at
/usr/src/debug/qt6-qtbase-6.8.2-2.fc41.x86_64/src/corelib/kernel/qcoreapplication.cpp:1946
#20 0x00007f528caf71fd in QCoreApplication::sendPostedEvents
(receiver=<optimized out>, event_type=<optimized out>) at
/usr/src/debug/qt6-qtbase-6.8.2-2.fc41.x86_64/src/corelib/kernel/qcoreapplication.cpp:1800
#21 0x00007f528ccb55c9 in operator() (__closure=<optimized out>) at
/usr/src/debug/qt6-qtbase-6.8.2-2.fc41.x86_64/src/corelib/thread/qthread_unix.cpp:403
#22 (anonymous
namespace)::terminate_on_exception<QThreadPrivate::finish()::<lambda()>
>(struct {...} &&) (t=<optimized out>) at
/usr/src/debug/qt6-qtbase-6.8.2-2.fc41.x86_64/src/corelib/thread/qthread_unix.cpp:311
#23 0x00007f528ccb5895 in QThreadPrivate::finish (this=<optimized out>) at
/usr/src/debug/qt6-qtbase-6.8.2-2.fc41.x86_64/src/corelib/thread/qthread_unix.cpp:386
#24 destroy_current_thread_data (p=0x55b5d53af9c0) at
/usr/src/debug/qt6-qtbase-6.8.2-2.fc41.x86_64/src/corelib/thread/qthread_unix.cpp:130
#25 Cleanup::~Cleanup (this=<optimized out>, __in_chrg=<optimized out>) at
/usr/src/debug/qt6-qtbase-6.8.2-2.fc41.x86_64/src/corelib/thread/qthread_unix.cpp:180
#26 0x00007f528c429180 in __cxa_finalize (d=0x7f528d079020) at
cxa_finalize.c:97
#27 0x00007f528ca53a97 in __do_global_dtors_aux () at /lib64/libQt6Core.so.6
#28 0x00007ffe4220dcc0 in ??? ()
#29 0x00007f528e9c20f2 in _dl_call_fini (closure_map=0x7f528e640a60) at
dl-call_fini.c:43
Very likely a Qt bug somewhere.
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