Details
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Bug
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Resolution: Invalid
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P1: Critical
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None
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5.6.2
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PyQt 5.6
Qt 5.6.2
Visual Studio 2013
Windows 10
Description
We're observing a fairly reliable crash/stack overflow on QApplication exit in Qt5WebEngineCore. It appears the library is infinite-looping while destroying the BrowserMainRunnerImpl.
Snippet of the (very large) stack:
40e4 (Inline) -------- Qt5WebEngineCore!base::DefaultDeleter<content::BrowserMainRunner>::operator()+0x6 [3rdparty\chromium\base\memory\scoped_ptr.h @ 128]
40e5 (Inline) -------- Qt5WebEngineCore!base::internal::scoped_ptr_impl<content::BrowserMainRunner,base::DefaultDeleter<content::BrowserMainRunner> >::{dtor}+0xd [3rdparty\chromium\base\memory\scoped_ptr.h @ 222]
40e6 011ebc3c 65d9ba6a Qt5WebEngineCore!WebEngineContext::~WebEngineContext+0x58 [web_engine_context.cpp @ 175]
40e7 011ebc4c 6606702c Qt5WebEngineCore!QtWebEngineCore::BrowserMainPartsQt::PostMainMessageLoopRun+0x2a [content_browser_client_qt.cpp @ 234]
40e8 011ebf58 6600eb45 Qt5WebEngineCore!content::BrowserMainLoop::ShutdownThreadsAndCleanUp+0x1cc [3rdparty\chromium\content\browser\browser_main_loop.cc @ 911]
40e9 011ebfe4 6600e3bd Qt5WebEngineCore!content::BrowserMainRunnerImpl::Shutdown+0x185 [3rdparty\chromium\content\browser\browser_main_runner.cc @ 257]
40ea (Inline) -------- Qt5WebEngineCore!content::BrowserMainRunnerImpl::{dtor}+0x17 [3rdparty\chromium\content\browser\browser_main_runner.cc @ 128]
40eb 011ebff0 65dc53f8 Qt5WebEngineCore!content::BrowserMainRunnerImpl::`scalar deleting destructor'+0x1d
40ec (Inline) -------- Qt5WebEngineCore!base::DefaultDeleter<content::BrowserMainRunner>::operator()+0x6 [3rdparty\chromium\base\memory\scoped_ptr.h @ 128]
40ed (Inline) -------- Qt5WebEngineCore!base::internal::scoped_ptr_impl<content::BrowserMainRunner,base::DefaultDeleter<content::BrowserMainRunner> >::{dtor}+0xd [3rdparty\chromium\base\memory\scoped_ptr.h @ 222]
40ee 011ec000 65d9ba6a Qt5WebEngineCore!WebEngineContext::~WebEngineContext+0x58 [web_engine_context.cpp @ 175]
40ef 011ec010 6606702c Qt5WebEngineCore!QtWebEngineCore::BrowserMainPartsQt::PostMainMessageLoopRun+0x2a [content_browser_client_qt.cpp @ 234]
40f0 011ec31c 6600eb45 Qt5WebEngineCore!content::BrowserMainLoop::ShutdownThreadsAndCleanUp+0x1cc [3rdparty\chromium\content\browser\browser_main_loop.cc @ 911]
40f1 011ec3a8 6600e3bd Qt5WebEngineCore!content::BrowserMainRunnerImpl::Shutdown+0x185 [3rdparty\chromium\content\browser\browser_main_runner.cc @ 257]
40f2 (Inline) -------- Qt5WebEngineCore!content::BrowserMainRunnerImpl::{dtor}+0x17 [3rdparty\chromium\content\browser\browser_main_runner.cc @ 128]
40f3 011ec3b4 65dc53f8 Qt5WebEngineCore!content::BrowserMainRunnerImpl::`scalar deleting destructor'+0x1d
40f4 (Inline) -------- Qt5WebEngineCore!base::DefaultDeleter<content::BrowserMainRunner>::operator()+0x6 [3rdparty\chromium\base\memory\scoped_ptr.h @ 128]
40f5 (Inline) -------- Qt5WebEngineCore!base::internal::scoped_ptr_impl<content::BrowserMainRunner,base::DefaultDeleter<content::BrowserMainRunner> >::{dtor}+0xd [3rdparty\chromium\base\memory\scoped_ptr.h @ 222]
40f6 011ec3c4 65d9ba6a Qt5WebEngineCore!WebEngineContext::~WebEngineContext+0x58 [web_engine_context.cpp @ 175]
40f7 011ec3d4 6606702c Qt5WebEngineCore!QtWebEngineCore::BrowserMainPartsQt::PostMainMessageLoopRun+0x2a [content_browser_client_qt.cpp @ 234]
40f8 011ec6e0 6600eb45 Qt5WebEngineCore!content::BrowserMainLoop::ShutdownThreadsAndCleanUp+0x1cc [3rdparty\chromium\content\browser\browser_main_loop.cc @ 911]
40f9 011ec76c 6600e3bd Qt5WebEngineCore!content::BrowserMainRunnerImpl::Shutdown+0x185 [3rdparty\chromium\content\browser\browser_main_runner.cc @ 257]
40fa (Inline) -------- Qt5WebEngineCore!content::BrowserMainRunnerImpl::{dtor}+0x17 [3rdparty\chromium\content\browser\browser_main_runner.cc @ 128]
40fb 011ec778 65dc53f8 Qt5WebEngineCore!content::BrowserMainRunnerImpl::`scalar deleting destructor'+0x1d
40fc (Inline) -------- Qt5WebEngineCore!base::DefaultDeleter<content::BrowserMainRunner>::operator()+0x6 [3rdparty\chromium\base\memory\scoped_ptr.h @ 128]
40fd (Inline) -------- Qt5WebEngineCore!base::internal::scoped_ptr_impl<content::BrowserMainRunner,base::DefaultDeleter<content::BrowserMainRunner> >::{dtor}+0xd [3rdparty\chromium\base\memory\scoped_ptr.h @ 222]
40fe 011ec788 67e1c766 Qt5WebEngineCore!WebEngineContext::~WebEngineContext+0x58 [web_engine_context.cpp @ 175]
40ff 011ec790 66a28907 Qt5WebEngineCore!`anonymous namespace'::`dynamic atexit destructor for 'sContext''+0x16
4100 011ec7ac 66a28b2f Qt5WebEngineCore!_CRT_INIT+0xc1 [f:\dd\vctools\crt\crtw32\dllstuff\crtdll.c @ 416]
4101 011ec7f0 66a28a59 Qt5WebEngineCore!__DllMainCRTStartup+0xcf [f:\dd\vctools\crt\crtw32\dllstuff\crtdll.c @ 522]
4102 011ec804 77b1d376 Qt5WebEngineCore!_DllMainCRTStartup+0x1c [f:\dd\vctools\crt\crtw32\dllstuff\crtdll.c @ 472]
4103 011ec824 77af453f ntdll!LdrxCallInitRoutine+0x16
4104 011ec870 77afe1bd ntdll!LdrpCallInitRoutine+0x7f
4105 011ec908 77b05685 ntdll!LdrShutdownProcess+0xed
4106 011ec9dc 77093a02 ntdll!RtlExitUserProcess+0xb5
<ExitProcess is called>