Bug 498604

Thank you for the bug report! Unfortunately I can't reproduce the crash myself on current git master (which has a lot of changes compared to Plasma 5, and the backtrace is incomplete and missing debug symbols for the following lines that we need to figure out exactly what's going wrong:

> #6  0x00007fe1e8d9bba3 in ??? () at /usr/lib64/libKF5KIOWidgets.so.5
> #7  0x00007fe1e8d9d4ec in ??? () at /usr/lib64/libKF5KIOWidgets.so.5
> #8  0x00007fe1e8d9ea59 in ??? () at /usr/lib64/libKF5KIOWidgets.so.5

Could you please install full debug symbols for the KIO framework, and attach a new symbolicated backtrace generated by using `coredumpctl gdb` in a terminal window? See https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports#Retrieving_a_backtrace_using_coredumpctl for details about how to do this.

Thanks again!

Nate,

You'll have to forgive me for asking potentially stupid questions.  I've been doing UNIX for pushing 40 years, but just setting up a non-headless Linux workstation for the first time.  When you say, "install full debug symbols for the KIO framework", which packages do I need to install?

I am on openSUSE 15.6 Leap and have about a dozen different KIO related package installed.  I do see there is a kio package which is described as a framework.  Can I get away with just installing the debug version of that package or do I need to install the debug versions of the rest of them as well?

Paul

Hopefully the debug version of that package should suffice! It depends on the distro though, so in the end, distro-specific instructions would have to take priority over anything I say. We have some distro-specific instructions at https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports#openSUSE.

Make sure you select the debug package for version 5.whatever of KIO. I can't remember if openSUSE remains the older KDE 4 packages, but if they do, the `kio` package might be that`

Nate,

It turns out there's a buttonin the crash reporter app (which I found after manually installing a bunch of debuginfo)  that downloads the missing debug info.   The crash is still reliably repeatable.  Here's the new stack trace:

Application: System Settings (systemsettings), signal: Segmentation fault

[KCrash Handler]
#4  0x00007fd932bb120c in QListData::isEmpty (this=0x55ee17477b20) at /usr/include/qt5/QtCore/qlist.h:116
#5  QList<KDirModelNode*>::isEmpty (this=0x55ee17477b20) at /usr/include/qt5/QtCore/qlist.h:201
#6  KDirModelDirNode::childCount (this=0x55ee17477b00) at /usr/src/debug/kio-5.115.0-150600.1.4.x86_64/src/widgets/kdirmodel.cpp:144
#7  KDirModel::data (this=<optimized out>, index=<optimized out>, role=<optimized out>) at /usr/src/debug/kio-5.115.0-150600.1.4.x86_64/src/widgets/kdirmodel.cpp:920
#8  0x00007fd936a9e5a9 in QSortFilterProxyModel::data (this=<optimized out>, index=..., role=743246400) at itemmodels/qsortfilterproxymodel.cpp:2294
#9  0x00007fd932b9bba3 in QModelIndex::data (arole=743246400, this=0x7ffd387ba9e0) at /usr/include/qt5/QtCore/qabstractitemmodel.h:460
#10 KFileItemDelegate::Private::itemSize (this=this@entry=0x55ee171f1d90, index=..., item=...) at /usr/src/debug/kio-5.115.0-150600.1.4.x86_64/src/widgets/kfileitemdelegate.cpp:199
#11 0x00007fd932b9d4ec in KFileItemDelegate::Private::display (this=this@entry=0x55ee171f1d90, index=...) at /usr/src/debug/kio-5.115.0-150600.1.4.x86_64/src/widgets/kfileitemdelegate.cpp:878
#12 0x00007fd932b9ea59 in KFileItemDelegate::Private::initStyleOption (this=<optimized out>, option=option@entry=0x7ffd387ba840, index=...) at /usr/src/debug/kio-5.115.0-150600.1.4.x86_64/src/widgets/kfileitemdelegate.cpp:757
#13 0x00007fd932b9ef8a in KFileItemDelegate::sizeHint (this=0x55ee171ee090, option=..., index=...) at /usr/include/c++/13/bits/unique_ptr.h:199
#14 0x00007fd937a6aef2 in QTreeViewPrivate::widthHintForIndex (this=this@entry=0x55ee1716d110, index=..., hint=11, option=..., i=i@entry=201) at itemviews/qtreeview.cpp:1591
#15 0x00007fd937a6dce9 in QTreeView::sizeHintForColumn (this=<optimized out>, column=1) at itemviews/qtreeview.cpp:2940
#16 0x00007fd937a134e9 in QHeaderViewPrivate::resizeSections (this=0x55ee171eeb30, globalMode=globalMode@entry=QHeaderView::Interactive, useGlobalMode=useGlobalMode@entry=false) at itemviews/qheaderview.cpp:3551
#17 0x00007fd937a13881 in QHeaderView::resizeSections (this=<optimized out>) at itemviews/qheaderview.cpp:1860
#18 0x00007fd937a13bba in QHeaderViewPrivate::executePostedResize (this=<optimized out>) at ../../include/QtWidgets/5.15.12/QtWidgets/private/../../../../../src/widgets/itemviews/qheaderview_p.h:246
#19 QHeaderView::sectionSize (this=0x55ee17204950, logicalIndex=2) at itemviews/qheaderview.cpp:674
#20 0x00007fd937a6dfdb in QTreeViewPrivate::updateScrollBars (this=0x55ee1716d110) at itemviews/qtreeview.cpp:3752
#21 0x00007fd937a74d78 in QTreeView::updateGeometries (this=0x55ee1720a210) at itemviews/qtreeview.cpp:2844
#22 0x00007fd9379fd0fd in QAbstractItemView::doItemsLayout (this=this@entry=0x55ee1720a210) at itemviews/qabstractitemview.cpp:1232
#23 0x00007fd937a733fb in QTreeView::doItemsLayout (this=0x55ee1720a210) at itemviews/qtreeview.cpp:2103
#24 0x00007fd9379ffc2d in QAbstractItemView::timerEvent (this=this@entry=0x55ee1720a210, event=event@entry=0x7ffd387bb2d0) at itemviews/qabstractitemview.cpp:2566
#25 0x00007fd937a738da in QTreeView::timerEvent (this=0x55ee1720a210, event=0x7ffd387bb2d0) at itemviews/qtreeview.cpp:1272
#26 0x00007fd936b0bb73 in QObject::event (this=this@entry=0x55ee1720a210, e=e@entry=0x7ffd387bb2d0) at kernel/qobject.cpp:1369
#27 0x00007fd9377e031b in QWidget::event (this=this@entry=0x55ee1720a210, event=event@entry=0x7ffd387bb2d0) at kernel/qwidget.cpp:9106
#28 0x00007fd93788784e in QFrame::event (this=this@entry=0x55ee1720a210, e=e@entry=0x7ffd387bb2d0) at widgets/qframe.cpp:550
#29 0x00007fd93788a653 in QAbstractScrollArea::event (this=this@entry=0x55ee1720a210, e=e@entry=0x7ffd387bb2d0) at widgets/qabstractscrollarea.cpp:1044
#30 0x00007fd937a0941b in QAbstractItemView::event (this=0x55ee1720a210, event=0x7ffd387bb2d0) at itemviews/qabstractitemview.cpp:1685
#31 0x00007fd93779f87c in QApplicationPrivate::notify_helper (this=this@entry=0x55ee148601e0, receiver=receiver@entry=0x55ee1720a210, e=e@entry=0x7ffd387bb2d0) at kernel/qapplication.cpp:3640
#32 0x00007fd9377a663f in QApplication::notify (this=<optimized out>, receiver=0x55ee1720a210, e=0x7ffd387bb2d0) at kernel/qapplication.cpp:3164
#33 0x00007fd936ad7d53 in QCoreApplication::notifyInternal2 (receiver=0x55ee1720a210, event=0x7ffd387bb2d0) at kernel/qcoreapplication.cpp:1064
#34 0x00007fd936b39609 in QTimerInfoList::activateTimers (this=0x55ee14867220) at kernel/qtimerinfo_unix.cpp:643
#35 0x00007fd936b39dd1 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:183
#36 0x00007fd9349a5fac in ??? () at /usr/lib64/libglib-2.0.so.0
#37 0x00007fd9349a7bd0 in ??? () at /usr/lib64/libglib-2.0.so.0
#38 0x00007fd9349a81cc in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#39 0x00007fd936b3a17c in QEventDispatcherGlib::processEvents (this=0x55ee149aa2a0, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#40 0x00007fd936ad65ba in QEventLoop::exec (this=this@entry=0x7ffd387bb520, flags=..., flags@entry=...) at kernel/qeventloop.cpp:235
#41 0x00007fd936adfdf7 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1375
#42 0x000055ee02bb9be3 in main (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/systemsettings5-5.27.11-bp156.1.2.x86_64/app/main.cpp:188
[Inferior 1 (process 10040) detached]

Thanks. Do other KDE apps crash similarly when you open a file picker? How about other System Settings pages, such as File Search > Stop Indexing a Folder or Screen Locking > Configure Appearance > image > Add?

Needless to say, I'm unable to reproduce the issue on current git master (soon to be Plasma 6.3), hence all the questions.

Nate,

So far, the only places I've seen the crash are in the Startup and Shutdown > Autostart > Add login script and Add logout script.

Neither of the two things you suggested caused the crash.

Paul

The code has changed a lot here between 5.27 and 6.3, so I'm unsure I'll be able to debug it further. If you could upgrade to at least Plasma 6.0 or later and see if it still happens, that would be very helpful.

Nate,

At this point, I don't know enough about KDE/Plasma to go looking for more trouble than I've already got.  I am running openSUSE because my ancient Sun Blade 2500 died.  I tried to go to Solaris 11.4  x86 but gnome 3 is an abomination that should be killed, burned, and the remains put on a nuclear rocket ship set to self-destruct in deep space.  Probably with Oracle attached to the rocket with a short rope.  But I digress.  I am also trying to migrate a Solaris 10 x86 network server to Solaris 11 and switching from cable TV to streaming all at the same time.  To say my plate is full is an understatement. 

The crash is not causing me any major problems.  I was just trying to figure out what an auto start login was supposed to look like and I am pretty sure I can figure that out in other ways.  So, thanks for looking into this and I am sorry it was a waste of your time.

Paul

Nate,

I don't know if this is related or not but I am also getting crashes in the File > Open dialog in Libre Office Writer and I saw some weird behavior in the file chooser in one of my browsers (Firefox or Vivaldi, I can't remember which).  The Libre Office Writer crashes just started happening today.

Paul

🐛🧹 ⚠️ This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information, then set the bug status to REPORTED. If there is no change for at least 30 days, it will be automatically closed as RESOLVED WORKSFORME.

For more information about our bug triaging procedures, please read https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging.

Thank you for helping us make KDE software even better for everyone!

🐛🧹 This bug has been in NEEDSINFO status with no change for at least 30 days. Closing as RESOLVED WORKSFORME.