https://bugs.kde.org/show_bug.cgi?id=424425
Bug ID: 424425
Summary: Crash when connecting a display
Product: kwin
Version: git master
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: kwin-bugs-n...@kde.org
Reporter: aleix...@kde.org
Target Milestone: ---
I've been doing some investigation, it seems to fail when creating screen
edges.
I added myself some asserts to understand it a bit better.
It's crashing/asserting because it's trying to create a negative screen edge.
warning: Unexpected size of section `.reg-xstate/599' in core file.
#0 0x00007f03ac47f355 in raise () from /usr/lib/libc.so.6
[Current thread is 1 (Thread 0x7f03a8991d80 (LWP 599))]
(gdb) where
#0 0x00007f03ac47f355 in raise () at /usr/lib/libc.so.6
#1 0x00007f03ac46890b in abort () at /usr/lib/libc.so.6
#2 0x00007f03acb37c51 in qt_message_fatal (message=<synthetic pointer>...,
context=...) at
/home/apol/devel/frameworks/qt5/qtbase/src/corelib/global/qlogging.cpp:1914
#3 QMessageLogger::fatal(char const*, ...) const
(this=this@entry=0x7fff7fe3b088, msg=msg@entry=0x7f03ace35ea0 "ASSERT: \"%s\"
in file %s, line %d") at
/home/apol/devel/frameworks/qt5/qtbase/src/corelib/global/qlogging.cpp:893
#4 0x00007f03acb3704a in qt_assert(char const*, char const*, int)
(assertion=<optimized out>, file=<optimized out>, line=<optimized out>) at
../../include/QtCore/../../../../../devel/frameworks/qt5/qtbase/src/corelib/global/qlogging.h:90
#5 0x00007f03b02a2dc7 in KWin::SwipeGesture::setStartGeometry(QRect const&)
(this=0x55c3ca221860, geometry=...) at ../gestures.cpp:50
#6 0x00007f03b0377eef in KWin::Edge::setGeometry(QRect const&)
(this=0x55c3c9f96f40, geometry=...) at ../screenedge.cpp:529
#7 0x00007f03b037ab30 in KWin::ScreenEdges::createEdge(KWin::ElectricBorder,
int, int, int, int, bool) (this=0x55c3c8037dd0, border=KWin::ElectricTop, x=55,
y=1080, width=-54, height=1, createAction=true) at ../screenedge.cpp:1114
#8 0x00007f03b037a8ed in
KWin::ScreenEdges::createHorizontalEdge(KWin::ElectricBorder, QRect const&,
QRect const&) (this=0x55c3c8037dd0, border=KWin::ElectricTop, screen=...,
fullArea=...) at ../screenedge.cpp:1103
#9 0x00007f03b037953a in KWin::ScreenEdges::recreateEdges()
(this=0x55c3c8037dd0) at ../screenedge.cpp:1021
#10 0x00007f03b044a1a6 in KWin::Workspace::desktopResized()
(this=0x55c3c837c150) at ../workspace.cpp:1943
#11 0x00007f03b019f559 in KWin::Workspace::qt_static_metacall(QObject*,
QMetaObject::Call, int, void**) (_o=0x55c3c837c150,
_c=QMetaObject::InvokeMetaMethod, _id=66, _a=0x7fff7fe3b520) at
kwin_autogen/EWIEGA46WW/moc_workspace.cpp:427
#12 0x00007f03acd8af40 in doActivate<false>(QObject*, int, void**)
(sender=0x55c3c8171e70, signal_index=4, argv=0x7fff7fe3b520) at
../../include/QtCore/../../../../../devel/frameworks/qt5/qtbase/src/corelib/kernel/qobjectdefs_impl.h:395
#13 0x00007f03b018c728 in KWin::Screens::changed() (this=0x55c3c8171e70) at
kwin_autogen/EWIEGA46WW/moc_screens.cpp:277
#14 0x00007f03b01dfb41 in
KWin::AbstractWaylandOutput::applyChanges(KWaylandServer::OutputChangeSet
const*) (this=0x55c3c816a400, changeSet=0x55c3ca8939a0) at
../abstract_wayland_output.cpp:205
#15 0x00007f03b032d819 in
KWin::Platform::requestOutputsChange(KWaylandServer::OutputConfigurationInterface*)
(this=0x55c3c8011c80, config=0x55c3ca033360) at ../platform.cpp:150
#16 0x00007f03b0426dc9 in KWin::WaylandServer::init(QByteArray const&,
QFlags<KWin::WaylandServer::InitializationFlag>)::$_11::operator()(KWaylandServer::OutputConfigurationInterface*)
const (this=0x55c3c80527f0, config=0x55c3ca033360) at ../wayland_server.cpp:556
#17 0x00007f03b0426d61 in QtPrivate::FunctorCall<QtPrivate::IndexesList<0>,
QtPrivate::List<KWaylandServer::OutputConfigurationInterface*>, void,
KWin::WaylandServer::init(QByteArray const&,
QFlags<KWin::WaylandServer::InitializationFlag>)::$_11>::call(KWin::WaylandServer::init(QByteArray
const&, QFlags<KWin::WaylandServer::InitializationFlag>)::$_11&, void**)
(f=..., arg=0x7fff7fe3ba90) at
/home/apol/devel/kde5/include/QtCore/qobjectdefs_impl.h:146
#18 0x00007f03b0426d21 in
QtPrivate::Functor<KWin::WaylandServer::init(QByteArray const&,
QFlags<KWin::WaylandServer::InitializationFlag>)::$_11,
1>::call<QtPrivate::List<KWaylandServer::OutputConfigurationInterface*>,
void>(KWin::WaylandServer::init(QByteArray const&,
QFlags<KWin::WaylandServer::InitializationFlag>)::$_11&, void*, void**)
(f=..., arg=0x7fff7fe3ba90) at
/home/apol/devel/kde5/include/QtCore/qobjectdefs_impl.h:256
#19 0x00007f03b0426ccc in
QtPrivate::QFunctorSlotObject<KWin::WaylandServer::init(QByteArray const&,
QFlags<KWin::WaylandServer::InitializationFlag>)::$_11, 1,
QtPrivate::List<KWaylandServer::OutputConfigurationInterface*>,
void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*)
(which=1, this_=0x55c3c80527e0, r=0x55c3c7fe5020, a=0x7fff7fe3ba90,
ret=0x0) at /home/apol/devel/kde5/include/QtCore/qobjectdefs_impl.h:443
#20 0x00007f03acd8af06 in QtPrivate::QSlotObjectBase::call(QObject*, void**)
(a=0x7fff7fe3ba90, r=0x55c3c7fe5020, this=0x55c3c80527e0) at
../../include/QtCore/../../../../../devel/frameworks/qt5/qtbase/src/corelib/kernel/qobjectdefs_impl.h:398
#21 doActivate<false>(QObject*, int, void**) (sender=0x55c3c80526a0,
signal_index=4, argv=0x7fff7fe3ba90) at
/home/apol/devel/frameworks/qt5/qtbase/src/corelib/kernel/qobject.cpp:3886
#22 0x00007f03ae1be2a3 in
KWaylandServer::OutputManagementInterface::configurationChangeRequested(KWaylandServer::OutputConfigurationInterface*)
(this=0x55c3c80526a0, _t1=0x55c3ca033360) at
src/server/KWaylandServer_autogen/EWIEGA46WW/moc_outputmanagement_interface.cpp:136
#23 0x00007f03ae21ec05 in
KWaylandServer::OutputConfigurationInterface::Private::emitConfigurationChangeRequested()
const (this=0x55c3c9f4bdb0) at
../src/server/outputconfiguration_interface.cpp:243
#24 0x00007f03ae21e45e in
KWaylandServer::OutputConfigurationInterface::Private::applyCallback(wl_client*,
wl_resource*) (client=0x55c3c9bda3b0, resource=0x55c3c9a3cc30) at
../src/server/outputconfiguration_interface.cpp:201
#25 0x00007f03a8f4aa8d in () at /usr/lib/libffi.so.7
#26 0x00007f03a8f4a01b in () at /usr/lib/libffi.so.7
#27 0x00007f03ab9c6f62 in () at /usr/lib/libwayland-server.so.0
#28 0x00007f03ab9c32dc in () at /usr/lib/libwayland-server.so.0
#29 0x00007f03ab9c4faa in wl_event_loop_dispatch () at
/usr/lib/libwayland-server.so.0
#30 0x00007f03ae1e8a0e in KWaylandServer::Display::Private::dispatch()
(this=0x55c3c8032c50) at ../src/server/display.cpp:134
#31 0x00007f03ae1ef6b8 in
KWaylandServer::Display::Private::installSocketNotifier()::$_0::operator()()
const (this=0x55c3c8bf8d50) at ../src/server/display.cpp:103
#32 0x00007f03ae1ef666 in QtPrivate::FunctorCall<QtPrivate::IndexesList<>,
QtPrivate::List<>, void,
KWaylandServer::Display::Private::installSocketNotifier()::$_0>::call(KWaylandServer::Display::Private::installSocketNotifier()::$_0&,
void**) (f=..., arg=0x7fff7fe3c2c0) at
/home/apol/devel/kde5/include/QtCore/qobjectdefs_impl.h:146
#33 0x00007f03ae1ef631 in
QtPrivate::Functor<KWaylandServer::Display::Private::installSocketNotifier()::$_0,
0>::call<QtPrivate::List<>,
void>(KWaylandServer::Display::Private::installSocketNotifier()::$_0&, void*,
void**) (f=..., arg=0x7fff7fe3c2c0) at
/home/apol/devel/kde5/include/QtCore/qobjectdefs_impl.h:256
#34 0x00007f03ae1ef5dc in
QtPrivate::QFunctorSlotObject<KWaylandServer::Display::Private::installSocketNotifier()::$_0,
0, QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*,
void**, bool*) (which=1, this_=0x55c3c8bf8d40, r=0x55c3c8032b30,
a=0x7fff7fe3c2c0, ret=0x0) at
/home/apol/devel/kde5/include/QtCore/qobjectdefs_impl.h:443
#35 0x00007f03acd8af06 in QtPrivate::QSlotObjectBase::call(QObject*, void**)
(a=0x7fff7fe3c2c0, r=0x55c3c8032b30, this=0x55c3c8bf8d40) at
../../include/QtCore/../../../../../devel/frameworks/qt5/qtbase/src/corelib/kernel/qobjectdefs_impl.h:398
#36 doActivate<false>(QObject*, int, void**) (sender=0x55c3c8bf8e80,
signal_index=3, argv=argv@entry=0x7fff7fe3c2c0) at
/home/apol/devel/frameworks/qt5/qtbase/src/corelib/kernel/qobject.cpp:3886
#37 0x00007f03acd84260 in QMetaObject::activate(QObject*, QMetaObject const*,
int, void**) (sender=sender@entry=0x55c3c8bf8e80, m=m@entry=0x7f03ad023b00
<QSocketNotifier::staticMetaObject>,
local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7fff7fe3c2c0)
at /home/apol/devel/frameworks/qt5/qtbase/src/corelib/kernel/qobject.cpp:3946
#38 0x00007f03acd8e33f in QSocketNotifier::activated(QSocketDescriptor,
QSocketNotifier::Type, QSocketNotifier::QPrivateSignal)
(this=this@entry=0x55c3c8bf8e80, _t1=..., _t2=<optimized out>, _t3=...) at
.moc/moc_qsocketnotifier.cpp:178
#39 0x00007f03acd8eb3b in QSocketNotifier::event(QEvent*) (this=0x55c3c8bf8e80,
e=0x7fff7fe3c3d0) at
/home/apol/devel/frameworks/qt5/qtbase/src/corelib/kernel/qsocketnotifier.cpp:302
#40 0x00007f03ad86811f in QApplicationPrivate::notify_helper(QObject*, QEvent*)
(this=<optimized out>, receiver=0x55c3c8bf8e80, e=0x7fff7fe3c3d0) at
/home/apol/devel/frameworks/qt5/qtbase/src/widgets/kernel/qapplication.cpp:3671
#41 0x00007f03acd54a3a in QCoreApplication::notifyInternal2(QObject*, QEvent*)
(receiver=0x55c3c8bf8e80, event=0x7fff7fe3c3d0) at
../../include/QtCore/5.15.0/QtCore/private/../../../../../../../../devel/frameworks/qt5/qtbase/src/corelib/thread/qthread_p.h:325
#42 0x00007f03acda91eb in
QEventDispatcherUNIXPrivate::activateSocketNotifiers() (this=0x55c3c7ff1a60) at
/home/apol/devel/frameworks/qt5/qtbase/src/corelib/kernel/qeventdispatcher_unix.cpp:304
#43 0x00007f03acda964b in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=<optimized out>, flags=...) at
/home/apol/devel/frameworks/qt5/qtbase/src/corelib/kernel/qeventdispatcher_unix.cpp:511
#44 0x00007f03a841228d in
QUnixEventDispatcherQPA::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=<optimized out>, flags=...) at
/home/apol/devel/frameworks/qt5/qtbase/src/platformsupport/eventdispatchers/qunixeventdispatcher.cpp:63
#45 0x00007f03acd533fb in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7fff7fe3c560, flags=..., flags@entry=...) at
../../include/QtCore/../../../../../devel/frameworks/qt5/qtbase/src/corelib/global/qflags.h:141
#46 0x00007f03acd5b660 in QCoreApplication::exec() () at
../../include/QtCore/../../../../../devel/frameworks/qt5/qtbase/src/corelib/global/qflags.h:121
#47 0x000055c3c7940a1f in main(int, char**) (argc=3, argv=0x7fff7fe3cf38) at
../main_wayland.cpp:711
(gdb) frame 5
#5 0x00007f03b02a2dc7 in KWin::SwipeGesture::setStartGeometry
(this=0x55c3ca221860, geometry=...) at ../gestures.cpp:50
50 Q_ASSERT(m_maximumX >= m_minimumX);
(gdb) p m_maximumX
$1 = 1
(gdb) p m_minimumX
$2 = 55
(gdb) p m_geometry
No symbol "m_geometry" in current context.
(gdb) up
#6 0x00007f03b0377eef in KWin::Edge::setGeometry (this=0x55c3c9f96f40,
geometry=...) at ../screenedge.cpp:529
529 m_gesture->setStartGeometry(m_geometry);
(gdb) p m_geometry
$3 = {x1 = 55, y1 = 1080, x2 = 0, y2 = 1080}
(gdb) down
#5 0x00007f03b02a2dc7 in KWin::SwipeGesture::setStartGeometry
(this=0x55c3ca221860, geometry=...) at ../gestures.cpp:50
50 Q_ASSERT(m_maximumX >= m_minimumX);
(gdb) p geometry
$4 = (const QRect &) @0x55c3c9f96f68: {x1 = 55, y1 = 1080, x2 = 0, y2 = 1080}
(gdb) p geometry.width()
You can't do that without a process to debug.
(gdb) up
#6 0x00007f03b0377eef in KWin::Edge::setGeometry (this=0x55c3c9f96f40,
geometry=...) at ../screenedge.cpp:529
529 m_gesture->setStartGeometry(m_geometry);
(gdb) p width
$5 = -164
(gdb) up
#7 0x00007f03b037ab30 in KWin::ScreenEdges::createEdge (this=0x55c3c8037dd0,
border=KWin::ElectricTop, x=55, y=1080, width=-54, height=1, createAction=true)
at ../screenedge.cpp:1114
1114 edge->setGeometry(QRect(x, y, width, height));
(gdb) p width
$6 = -54
(gdb) p width
$7 = -54
(gdb) up
#8 0x00007f03b037a8ed in KWin::ScreenEdges::createHorizontalEdge
(this=0x55c3c8037dd0, border=KWin::ElectricTop, screen=..., fullArea=...) at
../screenedge.cpp:1103
1103 m_edges << createEdge(border, x, y, width, 1);
(gdb) p width
$8 = -54
(gdb) p screen
$9 = (const QRect &) @0x55c3c99a1fc8: {x1 = 0, y1 = 1080, x2 = 0, y2 = 1439}
(gdb) p fullArea
$10 = (const QRect &) @0x7fff7fe3b3d0: {x1 = 0, y1 = 0, x2 = 2559, y2 = 2159}
(gdb) p m_cornerOffset
$11 = 55
(gdb) p screen
$12 = (const QRect &) @0x55c3c99a1fc8: {x1 = 0, y1 = 1080, x2 = 0, y2 = 1439}
(gdb) up
#9 0x00007f03b037953a in KWin::ScreenEdges::recreateEdges
(this=0x55c3c8037dd0) at ../screenedge.cpp:1021
1021 createHorizontalEdge(ElectricTop, screenPart,
fullArea);
(gdb) p screenPart
$13 = (const QRect &) @0x55c3c99a1fc8: {x1 = 0, y1 = 1080, x2 = 0, y2 = 1439}
(gdb) p screeb
No symbol "screeb" in current context.
(gdb) p screen
$14 = {d = 0x55c3ca20ac40, static shared_empty = {ref = {atomic = {_q_value =
{<std::__atomic_base<int>> = {static _S_alignment = 4, _M_i = -1}, static
is_always_lock_free = true}}}, qt_rgn = 0x7f03ad6f40c0 <qrp>}}
(gdb) p i
$15 = 1
(gdb) p screen
$16 = {d = 0x55c3ca20ac40, static shared_empty = {ref = {atomic = {_q_value =
{<std::__atomic_base<int>> = {static _S_alignment = 4, _M_i = -1}, static
is_always_lock_free = true}}}, qt_rgn = 0x7f03ad6f40c0 <qrp>}}
(gdb) p screenPart
$17 = (const QRect &) @0x55c3c99a1fc8: {x1 = 0, y1 = 1080, x2 = 0, y2 = 1439}
EXPECTED RESULT
SOFTWARE/OS VERSIONS
Windows:
macOS:
Linux/KDE Plasma:
(available in About System)
KDE Plasma Version:
KDE Frameworks Version:
Qt Version:
ADDITIONAL INFORMATION
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