Details
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Bug
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Resolution: Unresolved
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P2: Important
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None
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6.7.3, 6.8.2
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None
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Windows 10/11 (x86_64) multiple versions
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Windows
Description
The crash reporting of my app is showing for a while already start-up crashes origination from the WebEngine. These crashes are deep down in the QWebEngine. I noticed this issue multiple versions ago and it is one of the most tracked crashes in my application. Here are the latest two versions:
The previous released version of my application used Qt 6.7.3, which crashes loading a webpage on start-up with an off-the-record profile. The QWebPage is initialized before the event loop is started.
Crashed Thread: 11392 Application Specific Information: Fatal Error: EXCEPTION_BREAKPOINT / 0x7ff836cff0b5 Thread 11392 Crashed: 0 Qt6WebEngineCore.dll 0x7ff836cff0b5 TargetNtUnmapViewOfSection 1 Qt6WebEngineCore.dll 0x7ff835010c7e CrashForExceptionInNonABICompliantCodeRange 2 Qt6WebEngineCore.dll 0x7ff8323eff66 QtWebEngineCore::WebContentsAdapter::webChannel 3 Qt6WebEngineCore.dll 0x7ff8323f09e4 QtWebEngineCore::WebContentsAdapter::webChannel 4 Qt6WebEngineCore.dll 0x7ff8323df63a QtWebEngineCore::WebContentsAdapter::WebContentsAdapter 5 Qt6WebEngineCore.dll 0x7ff8323df688 QtWebEngineCore::WebContentsAdapter::WebContentsAdapter 6 Qt6WebEngineCore.dll 0x7ff83233d661 QWebEnginePage::qt_static_metacall 7 Qt6WebEngineCore.dll 0x7ff83233dbdf QWebEnginePagePrivate::QWebEnginePagePrivate 8 Qt6WebEngineCore.dll 0x7ff83233db1c QWebEnginePage::QWebEnginePage [...] 12 app.exe 0x7ff71bdb83d6 main (main.cpp:945) 13 app.exe. 0x7ff71c6ca06f qtEntryPoint (qtentrypoint_win.cpp:45) 14 app.exe. 0x7ff71c6adaa9 [inlined] invoke_main (exe_common.inl:102) 15 app.exe 0x7ff71c6adaa9 __scrt_common_main_seh (exe_common.inl:288) 16 KERNEL32.DLL 0x7ff895107373 BaseThreadInitThunk 17 ntdll.dll 0x7ff8959dcc90 RtlUserThreadStart
The latest release of this application using Qt 6.8.2 now and still has a similar issue. We are now using a named profile, which changes the init slightly and it now crashes in the first QWebEngineProfile construction (still before the event loop started):
OS Version: Windows 10.0.27823 (1000) Report Version: 104 Crashed Thread: 85872 Application Specific Information: Fatal Error: EXCEPTION_BREAKPOINT / 0x7ff91581c657 Thread 85872 Crashed: 0 Qt6WebEngineCore.dll 0x7ff91581c657 TargetNtUnmapViewOfSection 1 Qt6WebEngineCore.dll 0x7ff913a3587e CrashForExceptionInNonABICompliantCodeRange 2 Qt6WebEngineCore.dll 0x7ff910bd85a7 QtWebEngineCore::WebContentsAdapter::wasShown 3 Qt6WebEngineCore.dll 0x7ff910bd8f04 QtWebEngineCore::WebContentsAdapter::wasShown 4 Qt6WebEngineCore.dll 0x7ff910b9cd15 QtWebEngineCore::ProfileAdapter::ProfileAdapter 5 Qt6WebEngineCore.dll 0x7ff910b31809 QWebEngineProfile::QWebEngineProfile [...] 11 app.exe 0x7ff69825b8e5 main (main.cpp:1090) 12 app.exe 0x7ff698c5518f qtEntryPoint (qtentrypoint_win.cpp:45) 13 app.exe 0x7ff698c3a275 [inlined] invoke_main (exe_common.inl:102) 14 app.exe 0x7ff698c3a275 __scrt_common_main_seh (exe_common.inl:288) 15 KERNEL32.DLL 0x7ffa0b8864a6 BaseThreadInitThunk 16 ntdll.dll 0x7ffa0ba57bef RtlUserThreadStart
I suspect there is a weird initialization issue in the `WebContentsAdapter` that my app sometimes runs into. I tried to reproduce this several times, but couldn't identify the culprit.
Are there any known issues initializing the QWebEngine components early in the applications lifecycle or before the event loop is running?