Details
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Bug
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Resolution: Done
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P1: Critical
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6.4
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None
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Linux/X11
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e39ca06dbc (qt/qtbase/dev) acee56691f (qt/qtbase/6.4) acee56691f (qt/tqtc-qtbase/6.4.1) acee56691f (qt/tqtc-qtbase/tqtc/qtinsight-6.4)
Description
There is still an issue with crash related to disconnecting monitor.
I'm using GCC 12.1.0 and the latest Qt code form the dev branch.
Compiling the program using: -g -ggdb -fsanitize=address
I got 2 1920x1080 monitors connected with DisplayPort, they are connected to an KVM switch, if I switch to another computer on the KVM switch and back, then exit the program, I see the following:
AddressSanitizer:DEADLYSIGNAL ================================================================= ==6257==ERROR: AddressSanitizer: SEGV on unknown address 0x00000004efe1 (pc 0x7f705f58e64a bp 0x615000007100 sp 0x7ffcc507afc8 T0) ==6257==The signal is caused by a READ memory access. #0 0x7f705f58e64a in std::__atomic_base<int>::load(std::memory_order) const /usr/include/c++/12/bits/atomic_base.h:488 #1 0x7f705f58e64a in int QAtomicOps<int>::loadRelaxed<int>(std::atomic<int> const&) /home/jonas/Projects/qtbase/qtbase/src/corelib/thread/qatomic_cxx11.h:201 #2 0x7f705f58e64a in QBasicAtomicInteger<int>::loadRelaxed() const /home/jonas/Projects/qtbase/qtbase/src/corelib/thread/qbasicatomic.h:54 #3 0x7f705f58e64a in QWeakPointer<QObject>::internalData() const /home/jonas/Projects/qtbase/qtbase/src/corelib/tools/qsharedpointer_impl.h:685 #4 0x7f705f5c9a2e in QPointer<QScreen>::data() const /home/jonas/Projects/qtbase/qtbase/src/corelib/kernel/qpointer.h:41 #5 0x7f705f5c9a2e in QPointer<QScreen>::operator QScreen*() const /home/jonas/Projects/qtbase/qtbase/src/corelib/kernel/qpointer.h:49 #6 0x7f705f5c9a2e in QPlatformScreen::screen() const /home/jonas/Projects/qtbase/qtbase/src/gui/kernel/qplatformscreen.cpp:117 #7 0x7f705f5e9f84 in QWindowSystemInterface::handleScreenRemoved(QPlatformScreen*) /home/jonas/Projects/qtbase/qtbase/src/gui/kernel/qwindowsysteminterface.cpp:775 #8 0x7f705677e192 in QXcbConnection::~QXcbConnection() /home/jonas/Projects/qtbase/qtbase/src/plugins/platforms/xcb/qxcbconnection.cpp:112 #9 0x7f705677e294 in QXcbConnection::~QXcbConnection() /home/jonas/Projects/qtbase/qtbase/src/plugins/platforms/xcb/qxcbconnection.cpp:120 #10 0x7f705679d9fa in QXcbIntegration::~QXcbIntegration() /home/jonas/Projects/qtbase/qtbase/src/plugins/platforms/xcb/qxcbintegration.cpp:181 #11 0x7f705679da84 in QXcbIntegration::~QXcbIntegration() /home/jonas/Projects/qtbase/qtbase/src/plugins/platforms/xcb/qxcbintegration.cpp:184 #12 0x7f705f59a1f2 in QGuiApplicationPrivate::~QGuiApplicationPrivate() /home/jonas/Projects/qtbase/qtbase/src/gui/kernel/qguiapplication.cpp:1718 #13 0x7f705fd904b3 in QApplicationPrivate::~QApplicationPrivate() /home/jonas/Projects/qtbase/qtbase/src/widgets/kernel/qapplication.cpp:132 #14 0x7f705fd904d6 in QApplicationPrivate::~QApplicationPrivate() /home/jonas/Projects/qtbase/qtbase/src/widgets/kernel/qapplication.cpp:132 #15 0x7f705e74010f in QScopedPointer<QObjectData, QScopedPointerDeleter<QObjectData> >::~QScopedPointer() (/usr/local/Qt-6.4.0/lib/libQt6Core.so.6+0x14010f) #16 0x7f705e73ebfd in QObject::~QObject() /home/jonas/Projects/qtbase/qtbase/src/corelib/kernel/qobject.cpp:1310 #17 0x7f705e6fc6f7 in QCoreApplication::~QCoreApplication() /home/jonas/Projects/qtbase/qtbase/src/corelib/kernel/qcoreapplication.cpp:878 #18 0x7f705f59a098 in QGuiApplication::~QGuiApplication() /home/jonas/Projects/qtbase/qtbase/src/gui/kernel/qguiapplication.cpp:687 #19 0x7f705fd90974 in QApplication::~QApplication() /home/jonas/Projects/qtbase/qtbase/src/widgets/kernel/qapplication.cpp:704 #20 0x2254da5 in SingleApplication::~SingleApplication() /home/jonas/Projects/strawberry/strawberry/3rdparty/singleapplication/singleapplication.cpp:175 #21 0xdc299e in main /home/jonas/Projects/strawberry/strawberry/src/main.cpp:322 #22 0x7f705d4405af in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58 #23 0x7f705d440678 in __libc_start_main_impl ../csu/libc-start.c:392 #24 0xdbff74 in _start (/home/jonas/Projects/strawberry/build/strawberry+0xdbff74) AddressSanitizer can not provide additional info. SUMMARY: AddressSanitizer: SEGV /usr/include/c++/12/bits/atomic_base.h:488 in std::__atomic_base<int>::load(std::memory_order) const ==6257==ABORTING jonas@jonas:~/Projects/strawberry/build>