Bug 457706

Application: kwrite (22.04.3)

Qt Version: 5.15.5
Frameworks Version: 5.96.0
Operating System: Linux 5.15.0-43-generic x86_64
Windowing System: X11
Distribution: KDE neon User - 5.25
DrKonqi: 5.25.4 [KCrashBackend]

-- Information about the crash:
If Kwrite is tiled to be half of the screen and then I tile it to be a quarter of the screen, it crashes. This is consistent behavior on my PC. It happens every time. It's really annoying since changing position and size of the windows is a regular job in my workflow and kwrite is an essential app as well.

The crash can be reproduced every time.

-- Backtrace:
Application: KWrite (kwrite), signal: Segmentation fault

[New LWP 35321]
[New LWP 35322]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007f56f10be99f in __GI___poll (fds=0x7fff734d6ff8, nfds=1, timeout=1000) at ../sysdeps/unix/sysv/linux/poll.c:29
__preamble__
[Current thread is 1 (Thread 0x7f56ec8e39c0 (LWP 35318))]

Thread 3 (Thread 0x7f56e8aeb700 (LWP 35322)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55b3ca8fd808) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55b3ca8fd7b8, cond=0x55b3ca8fd7e0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55b3ca8fd7e0, mutex=0x55b3ca8fd7b8) at pthread_cond_wait.c:647
#3  0x00007f56e263a5eb in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007f56e263a1eb in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007f56ef953609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f56f10cb133 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f56ea982700 (LWP 35321)):
#0  0x00007f56f144d9ea in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007f56f168fc85 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f56eefa6da1 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f56eefa7312 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f56eefa74a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f56f168f5bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f56f163376b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f56f144d372 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f56efb89f4b in ?? () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#9  0x00007f56f144e553 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f56ef953609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#11 0x00007f56f10cb133 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f56ec8e39c0 (LWP 35318)):
[KCrash Handler]
#4  __memmove_avx_unaligned_erms () at ../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S:262
#5  0x00007f56ec4b1a32 in ?? () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#6  0x00007f56ec4b1dcb in ?? () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#7  0x00007f56ec4b22d8 in ?? () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#8  0x00007f56ec4b28b0 in ?? () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#9  0x00007f56f1bde967 in QBackingStore::flush(QRegion const&, QWindow*, QPoint const&) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#10 0x00007f56f212b51d in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007f56f212c325 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#12 0x00007f56f212e77c in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#13 0x00007f56f212f204 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#14 0x00007f56f2158875 in QWidgetPrivate::syncBackingStore() () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007f56f2179801 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007f56f217d412 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007f56f211be83 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007f56f2124c98 in QApplication::notify(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007f56f1634c6a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f56f1a1724f in QGuiApplicationPrivate::processGeometryChangeEvent(QWindowSystemInterfacePrivate::GeometryChangeEvent*) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#21 0x00007f56f1a1bce3 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#22 0x00007f56f19f266c in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#23 0x00007f56ec4c03ee in ?? () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#24 0x00007f56eefa717d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007f56eefa7400 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007f56eefa74a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007f56f168f5a2 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007f56f163376b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007f56f163b914 in QCoreApplication::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x000055b3c93f7aa7 in ?? ()
#31 0x00007f56f0fd0083 in __libc_start_main (main=0x55b3c93f60b0, argc=1, argv=0x7fff734d8fb8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff734d8fa8) at ../csu/libc-start.c:308
#32 0x000055b3c93f810e in ?? ()
[Inferior 1 (process 35318) detached]

Reported using DrKonqi