[Bug]: segfault

### ⚠️ Before submitting, please verify the following: ⚠️

- [x] This is a **bug**, not a question or a configuration issue.
- [x] This issue is **not** already reported on Github (I've searched it).
- [x] Nextcloud Server and Desktop Client are **up to date**. See [Server Maintenance and Release Schedule](https://github.com/nextcloud/server/wiki/Maintenance-and-Release-Schedule) and [Desktop Releases](https://nextcloud.com/install/#install-clients) for supported versions.
- [x] I agree to follow Nextcloud's [Code of Conduct](https://nextcloud.com/contribute/code-of-conduct/)

### Bug description

The desktop client just crashed with a segfault

### Steps to reproduce

Log out and log in

### Expected behavior

No segfault

### Which files are affected by this bug

I don't know what that question means

### Operating system

Linux

### Which version of the operating system you are running.

Arch Linux 6.17.9-zen1-1-zen 

### Package

Distro package manager

### Nextcloud Server version

32.0.1

### Nextcloud Desktop Client version

4.0.4

### Is this bug present after an update or on a fresh install?

Updated from a minor version (ex. 3.16.1 to 3.16.2)

### Are you using the Nextcloud Server Encryption module?

Encryption is Disabled

### Are you using an external user-backend?

- [x] Default internal user-backend
- [ ] LDAP/ Active Directory
- [ ] SSO - SAML
- [ ] Other

### Nextcloud Server logs

Nothing

### Additional info

This is the backtrace from gdb:

```
Core was generated by `nextcloud'.
Program terminated with signal SIGSEGV, Segmentation fault.
Downloading 27.07 K source file /usr/src/debug/qt6-webengine/qtwebengine/src/core/content_client_qt.cpp
#0  QtWebEngineCore::ContentClientQt::SetGpuInfo () at /usr/src/debug/qt6-webengine/qtwebengine/src/core/content_client_qt.cpp:528                                                                                                                                               
528	                    .status_values[gpu::GPU_FEATURE_TYPE_ACCELERATED_GL];
=> 0x00007f24324144eb <_ZN15QtWebEngineCore15ContentClientQt10SetGpuInfoERKN3gpu7GPUInfoE+2475>:	41 8b 9d dc 02 00 00	mov    ebx,DWORD PTR [r13+0x2dc]
[Current thread is 1 (Thread 0x7f2419ad5900 (LWP 2327))]
(gdb) bt
#0  QtWebEngineCore::ContentClientQt::SetGpuInfo () at /usr/src/debug/qt6-webengine/qtwebengine/src/core/content_client_qt.cpp:528
#1  0x00007f243588d529 in content::GpuDataManagerImplPrivate::UpdateGpuInfo () at ../../../../../qtwebengine/src/3rdparty/chromium/content/browser/gpu/gpu_data_manager_impl_private.cc:1051
#2  0x00007f2435885a7b in content::GpuDataManagerImpl::UpdateGpuInfo () at ../../../../../qtwebengine/src/3rdparty/chromium/content/browser/gpu/gpu_data_manager_impl.cc:168
#3  0x00007f243589dac4 in content::GpuProcessHost::DidInitialize () at ../../../../../qtwebengine/src/3rdparty/chromium/content/browser/gpu/gpu_process_host.cc:988
#4  0x00007f2438d24218 in viz::GpuHostImpl::DidInitialize () at ./../../../../../qtwebengine/src/3rdparty/chromium/components/viz/host/gpu_host_impl.cc:498
#5  0x00007f2433b3afd4 in viz::mojom::GpuHostStubDispatch::Accept () at ./gen/services/viz/privileged/mojom/gl/gpu_host.mojom.cc:1297
#6  0x00007f2437be1cf2 in mojo::InterfaceEndpointClient::HandleValidatedMessage () at ../../../../../qtwebengine/src/3rdparty/chromium/mojo/public/cpp/bindings/lib/interface_endpoint_client.cc:1052
#7  0x00007f2437be367e in mojo::MessageDispatcher::Accept () at ../../../../../qtwebengine/src/3rdparty/chromium/mojo/public/cpp/bindings/lib/message_dispatcher.cc:43
#8  0x00007f2437be199c in mojo::InterfaceEndpointClient::HandleIncomingMessage () at ../../../../../qtwebengine/src/3rdparty/chromium/mojo/public/cpp/bindings/lib/interface_endpoint_client.cc:724
#9  0x00007f2437be6fa2 in mojo::internal::MultiplexRouter::ProcessIncomingMessage () at ../../../../../qtwebengine/src/3rdparty/chromium/mojo/public/cpp/bindings/lib/multiplex_router.cc:1121
#10 0x00007f2437bea812 in mojo::internal::MultiplexRouter::Accept () at ../../../../../qtwebengine/src/3rdparty/chromium/mojo/public/cpp/bindings/lib/multiplex_router.cc:734
#11 0x00007f2437be367e in mojo::MessageDispatcher::Accept () at ../../../../../qtwebengine/src/3rdparty/chromium/mojo/public/cpp/bindings/lib/message_dispatcher.cc:43
#12 0x00007f2437bdb1d1 in mojo::Connector::DispatchMessage () at ../../../../../qtwebengine/src/3rdparty/chromium/mojo/public/cpp/bindings/lib/connector.cc:562
#13 0x00007f2437bdbecc in mojo::Connector::ReadAllAvailableMessages () at ../../../../../qtwebengine/src/3rdparty/chromium/mojo/public/cpp/bindings/lib/connector.cc:620
#14 0x00007f2437bdc01e in mojo::Connector::OnHandleReadyInternal () at ../../../../../qtwebengine/src/3rdparty/chromium/mojo/public/cpp/bindings/lib/connector.cc:452
#15 mojo::Connector::OnWatcherHandleReady () at ../../../../../qtwebengine/src/3rdparty/chromium/mojo/public/cpp/bindings/lib/connector.cc:418
#16 0x00007f2433aafb2e in base::RepeatingCallback<void (unsigned int)>::Run(unsigned int) const & () at ../../../../../qtwebengine/src/3rdparty/chromium/base/functional/callback.h:344
#17 mojo::SimpleWatcher::DiscardReadyState () at ../../../../../qtwebengine/src/3rdparty/chromium/mojo/public/cpp/system/simple_watcher.h:192
#18 0x00007f2437c03bdd in base::RepeatingCallback<void (unsigned int, mojo::HandleSignalsState const&)>::Run(unsigned int, mojo::HandleSignalsState const&) const & () at ../../../../../qtwebengine/src/3rdparty/chromium/base/functional/callback.h:344
#19 mojo::SimpleWatcher::OnHandleReady () at ../../../../../qtwebengine/src/3rdparty/chromium/mojo/public/cpp/system/simple_watcher.cc:278
#20 0x00007f243725e6be in base::OnceCallback<void ()>::Run() && () at ../../../../../qtwebengine/src/3rdparty/chromium/base/functional/callback.h:156
#21 base::TaskAnnotator::RunTaskImpl () at ./../../../../../qtwebengine/src/3rdparty/chromium/base/task/common/task_annotator.cc:209
#22 0x00007f24372861d7 in RunTask<base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::DoWorkImpl(base::LazyNow*)::<lambda(perfetto::EventContext&)> > () at ../../../../../qtwebengine/src/3rdparty/chromium/base/task/common/task_annotator.h:106
#23 base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::DoWorkImpl () at ./../../../../../qtwebengine/src/3rdparty/chromium/base/task/sequence_manager/thread_controller_with_message_pump_impl.cc:456
#24 0x00007f2437287113 in base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::DoWork () at ./../../../../../qtwebengine/src/3rdparty/chromium/base/task/sequence_manager/thread_controller_with_message_pump_impl.cc:330
#25 0x00007f24323eb2aa in QtWebEngineCore::MessagePumpForUIQt::handleScheduledWork () at /usr/src/debug/qt6-webengine/qtwebengine/src/core/browser_main_parts_qt.cpp:154
#26 QtWebEngineCore::MessagePumpForUIQt::MessagePumpForUIQt()::{lambda()#1}::operator()() const () at /usr/src/debug/qt6-webengine/qtwebengine/src/core/browser_main_parts_qt.cpp:107
#27 std::__invoke_impl<void, QtWebEngineCore::MessagePumpForUIQt::MessagePumpForUIQt()::{lambda()#1}&>(std::__invoke_other, QtWebEngineCore::MessagePumpForUIQt::MessagePumpForUIQt()::{lambda()#1}&) () at /usr/include/c++/15.2.1/bits/invoke.h:63
#28 std::__invoke_r<void, QtWebEngineCore::MessagePumpForUIQt::MessagePumpForUIQt()::{lambda()#1}&>(QtWebEngineCore::MessagePumpForUIQt::MessagePumpForUIQt()::{lambda()#1}&) () at /usr/include/c++/15.2.1/bits/invoke.h:113
#29 std::_Function_handler<void (), QtWebEngineCore::MessagePumpForUIQt::MessagePumpForUIQt()::{lambda()#1}>::_M_invoke(std::_Any_data const&) () at /usr/include/c++/15.2.1/bits/std_function.h:292
#30 0x00007f242ffc4936 in QObject::event (this=<optimized out>, e=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qobject.cpp:1388
#31 0x00007f243dd021c0 in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x55f3df3e51f0, e=0x55f3df0f8fe0) at /usr/src/debug/qt6-base/qtbase/src/widgets/kernel/qapplication.cpp:3305
#32 0x00007f242ff6a958 in QCoreApplication::notifyInternal2 (receiver=0x55f3df3e51f0, event=event@entry=0x55f3df0f8fe0) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1109
#33 0x00007f242ff6ad30 in QCoreApplication::sendEvent (receiver=<optimized out>, event=0x55f3df0f8fe0) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1549
#34 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x55f3de5f4260) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1904
#35 0x00007f243024ae18 in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1757
#36 postEventSourceDispatch (s=0x55f3de63f490) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:246
#37 0x00007f2430556f8d in g_main_dispatch (context=0x7f2414000f80) at ../glib/glib/gmain.c:3565
#38 0x00007f2430558657 in g_main_context_dispatch_unlocked (context=0x7f2414000f80) at ../glib/glib/gmain.c:4425
#39 g_main_context_iterate_unlocked (context=context@entry=0x7f2414000f80, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/glib/gmain.c:4490
#40 0x00007f2430558865 in g_main_context_iteration (context=0x7f2414000f80, may_block=1) at ../glib/glib/gmain.c:4556
#41 0x00007f2430248152 in QEventDispatcherGlib::processEvents (this=0x55f3de63f8b0, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:399
#42 0x00007f242ff75786 in QEventLoop::processEvents (this=0x7fff50c122e0, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:104
#43 QEventLoop::exec (this=0x7fff50c122e0, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:186
#44 0x00007f242ff6f3f1 in QCoreApplication::exec () at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1452
#45 0x00007f243dcfd32a in QApplication::exec () at /usr/src/debug/qt6-base/qtbase/src/widgets/kernel/qapplication.cpp:2575
#46 0x000055f3d66c80ac in main (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/nextcloud-client/nextcloud-client/src/gui/main.cpp:204
```

Maybe relevant client log:

```
2025-12-17 20:46:05:545 [ info nextcloud.gui.wizard.webviewpage /usr/src/debug/nextcloud-client/nextcloud-client/src/gui/wizard/webviewpage.cpp:30 ]:	Time for a webview!
2025-12-17 20:46:06:198 [ info nextcloud.gui.account.manager /usr/src/debug/nextcloud-client/nextcloud-client/src/gui/accountmanager.cpp:384 ]:	Saved all account settings, status: QSettings::NoError
2025-12-17 20:46:06:199 [ warning default qrc:/qml/src/gui/tray/TrayWindowHeader.qml:78 ]:	qrc:/qml/src/gui/tray/TrayWindowHeader.qml:78: TypeError: Cannot read property 'featuredAppIcon' of null
2025-12-17 20:46:06:200 [ warning default qrc:/qml/src/gui/tray/MainWindow.qml:327 ]:	qrc:/qml/src/gui/tray/MainWindow.qml:327: TypeError: Cannot read property 'unifiedSearchResultsListModel' of null
2025-12-17 20:46:06:200 [ warning default qrc:/qml/src/gui/tray/MainWindow.qml:328 ]:	qrc:/qml/src/gui/tray/MainWindow.qml:328: TypeError: Cannot read property 'unifiedSearchResultsListModel' of null
2025-12-17 20:46:06:200 [ warning default qrc:/qml/src/gui/tray/MainWindow.qml:325 ]:	qrc:/qml/src/gui/tray/MainWindow.qml:325: TypeError: Cannot read property 'unifiedSearchResultsListModel' of null
2025-12-17 20:46:06:200 [ warning default qrc:/qml/src/gui/tray/MainWindow.qml:297 ]:	qrc:/qml/src/gui/tray/MainWindow.qml:297: TypeError: Cannot read property 'unifiedSearchResultsListModel' of null
2025-12-17 20:46:06:200 [ warning default qrc:/qml/src/gui/tray/SyncStatus.qml:133 ]:	qrc:/qml/src/gui/tray/SyncStatus.qml:133: TypeError: Cannot read property 'needsToSignTermsOfService' of null
2025-12-17 20:46:06:200 [ warning default qrc:/qml/src/gui/tray/MainWindow.qml:384 ]:	qrc:/qml/src/gui/tray/MainWindow.qml:384: TypeError: Cannot read property 'unifiedSearchResultsListModel' of null
2025-12-17 20:46:06:200 [ warning default qrc:/qml/src/gui/tray/MainWindow.qml:346 ]:	qrc:/qml/src/gui/tray/MainWindow.qml:346: TypeError: Cannot read property 'unifiedSearchResultsListModel' of null
2025-12-17 20:46:06:200 [ warning default qrc:/qml/src/gui/tray/MainWindow.qml:298 ]:	qrc:/qml/src/gui/tray/MainWindow.qml:298: TypeError: Cannot read property 'unifiedSearchResultsListModel' of null
2025-12-17 20:46:06:200 [ warning default qrc:/qml/src/gui/tray/MainWindow.qml:273 ]:	qrc:/qml/src/gui/tray/MainWindow.qml:273: TypeError: Cannot read property 'unifiedSearchResultsListModel' of null
2025-12-17 20:46:06:200 [ warning default qrc:/qml/src/gui/tray/MainWindow.qml:274 ]:	qrc:/qml/src/gui/tray/MainWindow.qml:274: TypeError: Cannot read property 'isConnected' of null
2025-12-17 20:46:06:200 [ warning default qrc:/qml/src/gui/tray/MainWindow.qml:275 ]:	qrc:/qml/src/gui/tray/MainWindow.qml:275: TypeError: Cannot read property 'unifiedSearchResultsListModel' of null
2025-12-17 20:46:06:200 [ warning default qrc:/qml/src/gui/tray/TrayWindowHeader.qml:82 ]:	qrc:/qml/src/gui/tray/TrayWindowHeader.qml:82: TypeError: Cannot read property 'featuredAppAccessibleName' of null
2025-12-17 20:46:06:200 [ warning default qrc:/qml/src/gui/tray/TrayWindowHeader.qml:77 ]:	qrc:/qml/src/gui/tray/TrayWindowHeader.qml:77: TypeError: Cannot read property 'isFeaturedAppEnabled' of null
2025-12-17 20:46:06:201 [ warning default qrc:/qml/src/gui/tray/TrayWindowHeader.qml:57 ]:	qrc:/qml/src/gui/tray/TrayWindowHeader.qml:57: TypeError: Cannot read property 'hasLocalFolder' of null
2025-12-17 20:46:06:201 [ warning default qrc:/qml/src/gui/tray/TrayFoldersMenuButton.qml:20 ]:	qrc:/qml/src/gui/tray/TrayFoldersMenuButton.qml:20: TypeError: Cannot read property 'groupFolders' of null
2025-12-17 20:46:06:202 [ warning default qrc:/qml/src/gui/tray/SyncStatus.qml:105 ]:	qrc:/qml/src/gui/tray/SyncStatus.qml:105: TypeError: Cannot read property 'hasLocalFolder' of null
2025-12-17 20:46:06:202 [ warning default qrc:/qml/src/gui/tray/SyncStatus.qml:120 ]:	qrc:/qml/src/gui/tray/SyncStatus.qml:120: TypeError: Cannot read property 'hasSyncConflicts' of null
2025-12-17 20:46:06:202 [ warning default qrc:/qml/src/gui/tray/SyncStatus.qml:103 ]:	qrc:/qml/src/gui/tray/SyncStatus.qml:103: TypeError: Cannot read property 'hasSyncConflicts' of null
2025-12-17 20:46:06:205 [ warning default qrc:/qml/src/gui/tray/UserLine.qml:227 ]:	qrc:/qml/src/gui/tray/UserLine.qml:227: ReferenceError: accountMenu is not defined
```

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Uh oh!

[Bug]: segfault #9268

⚠️ Before submitting, please verify the following: ⚠️

Bug description

Steps to reproduce

Expected behavior

Which files are affected by this bug

Operating system

Which version of the operating system you are running.

Package

Nextcloud Server version

Nextcloud Desktop Client version

Is this bug present after an update or on a fresh install?

Are you using the Nextcloud Server Encryption module?

Are you using an external user-backend?

Nextcloud Server logs

Additional info

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

[Bug]: segfault #9268

Description

⚠️ Before submitting, please verify the following: ⚠️

Bug description

Steps to reproduce

Expected behavior

Which files are affected by this bug

Operating system

Which version of the operating system you are running.

Package

Nextcloud Server version

Nextcloud Desktop Client version

Is this bug present after an update or on a fresh install?

Are you using the Nextcloud Server Encryption module?

Are you using an external user-backend?

Nextcloud Server logs

Additional info

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Issue actions