Hi! I'm developing an application with Qt 5.9.3 on macOS. My application uses QtWebEngine framework to display Web pages. QtWebEngine in turn uses Chromium/Blink code for rendering. It all worked successfully until recently Apple demanded all apps on macOS 10.15 to be notarized. Notarization involves enabling hardened runtime. After I enabled hardened runtime, QtWebEngine stopped working: nothing is rendered and in the background QtWebEngineProcess crashes repeatedly.
Why I'm asking for help here is because judging by call stack QtWebEngineProcess crashes inside Chromium code (specifically, Blink -> V8): Thread 0 Crashed:: CrRendererMain Dispatch queue: com.apple.main-thread 0 org.qt-project.Qt.QtWebEngineCore 0x000000010c32fdbe v8::internal::Deoptimizer::GetDeoptimizationEntry(v8::internal::Isolate*, int, v8::internal::Deoptimizer::BailoutType, v8::internal::Deoptimizer::GetEntryMode) + 94 1 org.qt-project.Qt.QtWebEngineCore 0x000000010c3703e1 v8::internal::ExternalReferenceTable::AddDeoptEntries(v8::internal::Isolate*) + 97 2 org.qt-project.Qt.QtWebEngineCore 0x000000010c36bc02 v8::internal::ExternalReferenceTable::ExternalReferenceTable(v8::internal::Isolate*) + 210 3 org.qt-project.Qt.QtWebEngineCore 0x000000010c36bb0e v8::internal::ExternalReferenceTable::instance(v8::internal::Isolate*) + 46 4 org.qt-project.Qt.QtWebEngineCore 0x000000010c6d72d9 v8::internal::Deserializer::Deserialize(v8::internal::Isolate*) + 25 5 org.qt-project.Qt.QtWebEngineCore 0x000000010c478d46 v8::internal::Isolate::Init(v8::internal::Deserializer*) + 9878 6 org.qt-project.Qt.QtWebEngineCore 0x000000010c6dfb53 v8::internal::Snapshot::Initialize(v8::internal::Isolate*) + 723 7 org.qt-project.Qt.QtWebEngineCore 0x000000010bfbdf09 v8::Isolate::New(v8::Isolate::CreateParams const&) + 361 8 org.qt-project.Qt.QtWebEngineCore 0x000000010bf8750c gin::IsolateHolder::IsolateHolder(gin::IsolateHolder::AccessMode) + 284 9 org.qt-project.Qt.QtWebEngineCore 0x000000010d2e9cbf blink::V8PerIsolateData::V8PerIsolateData() + 31 10 org.qt-project.Qt.QtWebEngineCore 0x000000010d2ea382 blink::V8PerIsolateData::initialize() + 34 11 org.qt-project.Qt.QtWebEngineCore 0x000000010d2e38cb blink::V8Initializer::initializeMainThread() + 107 12 org.qt-project.Qt.QtWebEngineCore 0x000000010d267ac4 blink::initialize(blink::Platform*) + 20 13 org.qt-project.Qt.QtWebEngineCore 0x000000010cedc97e content::RenderThreadImpl::InitializeWebKit(scoped_refptr<base::SingleThreadTaskRunner>&) + 174 14 org.qt-project.Qt.QtWebEngineCore 0x000000010cedaecc content::RenderThreadImpl::Init(scoped_refptr<base::SingleThreadTaskRunner>&) + 300 15 org.qt-project.Qt.QtWebEngineCore 0x000000010ceda65a content::RenderThreadImpl::RenderThreadImpl(std::__1::unique_ptr<base::MessageLoop, std::__1::default_delete<base::MessageLoop> >, std::__1::unique_ptr<blink::scheduler::RendererScheduler, std::__1::default_delete<blink::scheduler::RendererScheduler> >) + 1434 16 org.qt-project.Qt.QtWebEngineCore 0x000000010ceda07c content::RenderThreadImpl::Create(std::__1::unique_ptr<base::MessageLoop, std::__1::default_delete<base::MessageLoop> >, std::__1::unique_ptr<blink::scheduler::RendererScheduler, std::__1::default_delete<blink::scheduler::RendererScheduler> >) + 76 17 org.qt-project.Qt.QtWebEngineCore 0x000000010cf0b165 content::RendererMain(content::MainFunctionParams const&) + 517 18 org.qt-project.Qt.QtWebEngineCore 0x000000010aa395b5 content::ContentMainRunnerImpl::Run() + 437 19 org.qt-project.Qt.QtWebEngineCore 0x000000010aa38976 content::ContentMain(content::ContentMainParams const&) + 54 20 org.qt-project.Qt.QtWebEngineCore 0x0000000109ee2e36 QtWebEngine::processMain(int, char const**) + 70 21 org.qt-project.Qt.QtWebEngineProcess 0x0000000109e99f54 0x109e95000 + 20308 22 libdyld.dylib 0x00007fff7e1433d5 start + 1 Can you please help me to find out exactly why Blink / V8 is crashing here? That would help me to workaround this. I already asked on Qt forum, with no reply, and by the way, here's another developer experiencing similar issue with QtWebEngine: https://forum.qt.io/topic/102212/qtwebengine-signing-issues . I tried what he suggests: adding entitlement to QtWebEngineProcess, with no success. I'm attaching a full crash report from QtWebEngineProcess with that entitlement enabled. Thanks in advance! -- -- v8-dev mailing list [email protected] http://groups.google.com/group/v8-dev --- You received this message because you are subscribed to the Google Groups "v8-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/v8-dev/baa4a934-669f-428d-8f72-85dd235d0dc6%40googlegroups.com.
QtWebEngineProcess_2019-09-16-173313-3_Dmitriys-Mac-mini.crash
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