https://bugs.kde.org/show_bug.cgi?id=407199
--- Comment #2 from Greg Varsanyi <gvarsa...@gmail.com> ---
Same symptoms, same versions, on kernel 5.1. Core dump looks similar too:
Thread 7 (Thread 0x7f72823a7700 (LWP 11724)):
#0 0x00007f729b430bf9 in __GI___poll (fds=0x7f72780046c0, nfds=2, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
resultvar = 18446744073709551100
sc_cancel_oldtype = 0
#1 0x00007f72925685c9 in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007f72925686dc in g_main_context_iteration () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007f729bf9b13f in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007f729bf3c64a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007f729bd6441a in QThread::exec() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6 0x00007f729bd65bc2 in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7 0x00007f729d3cf6db in start_thread (arg=0x7f72823a7700) at
pthread_create.c:463
pd = 0x7f72823a7700
now = <optimized out>
unwind_buf =
{cancel_jmp_buf = {{jmp_buf = {140129787868928,
440595788140762970, 140129787866752, 0, 94798741986608, 140721842154032,
-506571411667953830, -506525279646263462}, mask_was_saved = 0}}, priv = {pad =
{0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
not_first_call = <optimized out>
#8 0x00007f729b43d88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 6 (Thread 0x7f726bfff700 (LWP 11747)):
#0 0x00007f729b430bf9 in __GI___poll (fds=0x7f7260002930, nfds=1, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
resultvar = 18446744073709551100
sc_cancel_oldtype = 0
#1 0x00007f72925685c9 in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007f72925686dc in g_main_context_iteration () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007f729bf9b13f in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007f729bf3c64a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007f729bd6441a in QThread::exec() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6 0x00007f729691c2e5 in () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7 0x00007f729bd65bc2 in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8 0x00007f729d3cf6db in start_thread (arg=0x7f726bfff700) at
pthread_create.c:463
pd = 0x7f726bfff700
now = <optimized out>
unwind_buf =
{cancel_jmp_buf = {{jmp_buf = {140129414936320,
440595788140762970, 140129414934144, 0, 140129549196400, 140721842151680,
-506205845526554790, -506525279646263462}, mask_was_saved = 0}}, priv = {pad =
{0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
not_first_call = <optimized out>
#9 0x00007f729b43d88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 5 (Thread 0x7f72719ca700 (LWP 11725)):
#0 0x00007f729d3d59f3 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x56380d6b7048) at
../sysdeps/unix/sysv/linux/futex-internal.h:88
__ret = -512
oldtype = 0
err = <optimized out>
spin = 0
buffer = {__routine = 0x7f729d3d5690 <__condvar_cleanup_waiting>, __arg
= 0x7f72719c9cc0, __canceltype = 46, __prev = 0x0}
cbuffer = {wseq = 0, cond = 0x56380d6b7020, mutex = 0x56380d6b6ff8,
private = 0}
err = <optimized out>
g = 0
flags = <optimized out>
signals = <optimized out>
result = 0
seq = 0
#1 0x00007f729d3d59f3 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x56380d6b6ff8, cond=0x56380d6b7020) at pthread_cond_wait.c:502
spin = 0
buffer = {__routine = 0x7f729d3d5690 <__condvar_cleanup_waiting>, __arg
= 0x7f72719c9cc0, __canceltype = 46, __prev = 0x0}
cbuffer = {wseq = 0, cond = 0x56380d6b7020, mutex = 0x56380d6b6ff8,
private = 0}
err = <optimized out>
g = 0
flags = <optimized out>
signals = <optimized out>
---Type <return> to continue, or q <return> to quit---
result = 0
seq = 0
#2 0x00007f729d3d59f3 in __pthread_cond_wait (cond=0x56380d6b7020,
mutex=0x56380d6b6ff8) at pthread_cond_wait.c:655
#3 0x00007f7272eaadcb in () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4 0x00007f7272eaaaf7 in () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5 0x00007f729d3cf6db in start_thread (arg=0x7f72719ca700) at
pthread_create.c:463
pd = 0x7f72719ca700
now = <optimized out>
unwind_buf =
{cancel_jmp_buf = {{jmp_buf = {140129509091072,
440595788140762970, 140129509088896, 0, 94798741939920, 140721842148656,
-506183603501541542, -506525279646263462}, mask_was_saved = 0}}, priv = {pad =
{0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
not_first_call = <optimized out>
#6 0x00007f729b43d88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 4 (Thread 0x7f7282ba8700 (LWP 11723)):
#0 0x00007f729b430bf9 in __GI___poll (fds=0x7f7274003ce0, nfds=2, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
resultvar = 18446744073709551100
sc_cancel_oldtype = 0
#1 0x00007f72925685c9 in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007f72925686dc in g_main_context_iteration () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007f729bf9b13f in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007f729bf3c64a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007f729bd6441a in QThread::exec() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6 0x00007f729bd65bc2 in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7 0x00007f729d3cf6db in start_thread (arg=0x7f7282ba8700) at
pthread_create.c:463
pd = 0x7f7282ba8700
now = <optimized out>
unwind_buf =
{cancel_jmp_buf = {{jmp_buf = {140129796261632,
440595788140762970, 140129796259456, 0, 94798741978704, 140721842154208,
-506572511716452518, -506525279646263462}, mask_was_saved = 0}}, priv = {pad =
{0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
not_first_call = <optimized out>
#8 0x00007f729b43d88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 3 (Thread 0x7f72711c9700 (LWP 11727)):
#0 0x00007f729d3d5ed9 in futex_reltimed_wait_cancelable (private=<optimized
out>, reltime=0x7f72711c8b80, expected=0, futex_word=0x56380d8518c0) at
../sysdeps/unix/sysv/linux/futex-internal.h:142
__ret = -516
oldtype = 0
err = <optimized out>
rt = {tv_sec = 29, tv_nsec = 999999751}
spin = 0
buffer = {__routine = 0x7f729d3d5690 <__condvar_cleanup_waiting>, __arg
= 0x7f72711c8bb0, __canceltype = 1897696256, __prev = 0x0}
cbuffer = {wseq = 4, cond = 0x56380d851898, mutex = 0x56380d851870,
private = 0}
err = <optimized out>
g = 0
flags = <optimized out>
maxspin = 0
signals = <optimized out>
result = 0
seq = 2
#1 0x00007f729d3d5ed9 in __pthread_cond_wait_common (abstime=0x7f72711c8c40,
mutex=0x56380d851870, cond=0x56380d851898) at pthread_cond_wait.c:533
rt = {tv_sec = 29, tv_nsec = 999999751}
spin = 0
buffer = {__routine = 0x7f729d3d5690 <__condvar_cleanup_waiting>, __arg
= 0x7f72711c8bb0, __canceltype = 1897696256, __prev = 0x0}
cbuffer = {wseq = 4, cond = 0x56380d851898, mutex = 0x56380d851870,
private = 0}
err = <optimized out>
g = 0
flags = <optimized out>
maxspin = 0
signals = <optimized out>
result = 0
seq = 2
#2 0x00007f729d3d5ed9 in __pthread_cond_timedwait (cond=0x56380d851898,
mutex=0x56380d851870, abstime=0x7f72711c8c40) at pthread_cond_wait.c:667
---Type <return> to continue, or q <return> to quit---
#3 0x00007f729bd6cac6 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007f729bd6ce25 in QWaitCondition::wait(QMutex*, unsigned long) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007f729bd6a5dd in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6 0x00007f729bd65bc2 in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7 0x00007f729d3cf6db in start_thread (arg=0x7f72711c9700) at
pthread_create.c:463
pd = 0x7f72711c9700
now = <optimized out>
unwind_buf =
{cancel_jmp_buf = {{jmp_buf = {140129500698368,
440595788140762970, 140129500696192, 0, 94798743301600, 140721842152032,
-506182503453042854, -506525279646263462}, mask_was_saved = 0}}, priv = {pad =
{0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
not_first_call = <optimized out>
#8 0x00007f729b43d88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 2 (Thread 0x7f7283a07700 (LWP 11722)):
#0 0x00007f729b430bf9 in __GI___poll (fds=0x7f727c016d50, nfds=4, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
resultvar = 18446744073709551100
sc_cancel_oldtype = 0
#1 0x00007f72925685c9 in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007f72925686dc in g_main_context_iteration () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007f729bf9b13f in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007f729bf3c64a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007f729bd6441a in QThread::exec() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6 0x00007f729d14f015 in () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7 0x00007f729bd65bc2 in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8 0x00007f729d3cf6db in start_thread (arg=0x7f7283a07700) at
pthread_create.c:463
pd = 0x7f7283a07700
now = <optimized out>
unwind_buf =
{cancel_jmp_buf = {{jmp_buf = {140129811330816,
440595788140762970, 140129811328640, 0, 140130240982400, 140721842153664,
-506574933541136550, -506525279646263462}, mask_was_saved = 0}}, priv = {pad =
{0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
not_first_call = <optimized out>
#9 0x00007f729b43d88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 1 (Thread 0x7f729ef55880 (LWP 11721)):
#0 0x00007f72957384d4 in QMatrix4x4::toTransform() const () at
/usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#1 0x00007f7282fe96b6 in KWin::DrmOutput::updateCursor() (this=<optimized
out>) at ./plugins/platforms/drm/drm_output.cpp:174
cursorImage = <incomplete type>
p = {static staticMetaObject = {d = {superdata = 0x0, stringdata =
0x7f729580afc0, data = 0x7f729580aee0, static_metacall = 0x0,
relatedMetaObjects = 0x0, extradata = 0x0}}, d_ptr = {d = 0x56380d94fe70}}
#2 0x00007f7282fddab5 in KWin::DrmBackend::updateCursor()
(this=0x56380d570de0) at ./plugins/platforms/drm/drm_backend.cpp:712
it = 0x56380d6ac568
cursorImage = @0x7ffc5b69df40: <incomplete type>
this = 0x56380d570de0
#3 0x00007f729bf6df3f in QMetaObject::activate(QObject*, int, int, void**) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007f729bf6df3f in QMetaObject::activate(QObject*, int, int, void**) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007f729e9875d4 in KWin::PointerInputRedirection::init() () at
/usr/lib/x86_64-linux-gnu/libkwin.so.5
#6 0x00007f729e96b10f in KWin::InputRedirection::setupWorkspace() () at
/usr/lib/x86_64-linux-gnu/libkwin.so.5
#7 0x00007f729bf6df3f in QMetaObject::activate(QObject*, int, int, void**) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8 0x000056380c368ba8 in ()
#9 0x000056380c37eb00 in ()
#10 0x0000000000000000 in ()
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