WebKit Crashes JVM when removing nodes from DOM on wrong thread.

[Kevin Rushforth]

Yes, please file a bug. An intermittent exception would be one thing, 
but it shouldn't actually crash when doing that.

-- Kevin


On 2/12/2023 3:49 PM, Scott Palmer wrote:
> I'm seeing a hard crash in native code that brings down the JVM when I 
> accidentally called removeChild on an element from a WebView Document 
> while not on the Platform thread.  While I know it's my error, 
> bringing down the JVM instead of throwing an exception seems wrong.
>
> Should this be considered a bug or not?
>
> Scott
>
> With JavaFX 17:
> Thread 50 Crashed:: Java: ForkJoinPool-1-worker-5
> 0   libjfxwebkit.dylib                   0x14fa2ac33 
> WTFCrashWithInfo(int, char const*, char const*, int) + 19
> 1   libjfxwebkit.dylib                   0x14ea5b60d 
> WebCore::TimerBase::setNextFireTime(WTF::MonotonicTime) + 541
> 2   libjfxwebkit.dylib                   0x14ee0a513 
> WebCore::RenderTreeBuilder::detachFromRenderElement(WebCore::RenderElement&, 
> WebCore::RenderObject&, WebCore::RenderTreeBuilder::WillBeDestroyed) + 179
> 3   libjfxwebkit.dylib                   0x14ee09fa2 
> WebCore::RenderTreeBuilder::Block::detach(WebCore::RenderBlock&, 
> WebCore::RenderObject&, 
> WebCore::RenderTreeBuilder::CanCollapseAnonymousBlock) + 562
> 4   libjfxwebkit.dylib                   0x14ee085ef 
> WebCore::RenderTreeBuilder::detach(WebCore::RenderElement&, 
> WebCore::RenderObject&, 
> WebCore::RenderTreeBuilder::CanCollapseAnonymousBlock) + 543
> 5   libjfxwebkit.dylib                   0x14ee082ba 
> WebCore::RenderTreeBuilder::destroy(WebCore::RenderObject&) + 58
> 6   libjfxwebkit.dylib                   0x14ee0bd57 
> WebCore::RenderTreeBuilder::destroyAndCleanUpAnonymousWrappers(WebCore::RenderObject&) 
> + 263
> 7   libjfxwebkit.dylib                   0x14ee19aae 
> WebCore::RenderTreeUpdater::tearDownRenderers(WebCore::Element&, 
> WebCore::RenderTreeUpdater::TeardownType, 
> WebCore::RenderTreeBuilder&)::$_7::operator()(unsigned int) const + 734
> 8   libjfxwebkit.dylib                   0x14ee18c13 
> WebCore::RenderTreeUpdater::tearDownRenderers(WebCore::Element&, 
> WebCore::RenderTreeUpdater::TeardownType, WebCore::RenderTreeBuilder&) 
> + 1171
> 9   libjfxwebkit.dylib                   0x14ee196d1 
> WebCore::RenderTreeUpdater::tearDownRenderers(WebCore::Element&) + 65
> 10  libjfxwebkit.dylib                   0x14e46db9c 
> WebCore::ContainerNode::removeBetween(WebCore::Node*, WebCore::Node*, 
> WebCore::Node&) + 108
> 11  libjfxwebkit.dylib                   0x14e46ad44 
> WebCore::ContainerNode::removeChild(WebCore::Node&) + 324
> 12  libjfxwebkit.dylib                   0x14e50e24b 
> WebCore::Node::removeChild(WebCore::Node&) + 43
> 13  libjfxwebkit.dylib                   0x14d98deeb 
> Java_com_sun_webkit_dom_NodeImpl_removeChildImpl + 107
> 14  ???                                 0x1203e753a ???
> 15  ???                                 0x1203e335c ???
> 16  ???                                 0x1203e36a2 ???
> 17  ???                                 0x1203e342b ???
> 18  ???                                 0x1203e342b ???
> 19  ???                                 0x1203e388f ???
> 20  ???                                 0x1203e342b ???
> 21  ???                                 0x1203e3317 ???
> 22  ???                                 0x1203e3317 ???
> 23  ???                                 0x1203e342b ???
> 24  ???                                 0x1203e3317 ???
> 25  ???                                 0x1203e342b ???
> 26  ???                                 0x1203dacc9 ???
> 27  libjvm.dylib                         0x110790af6 
> JavaCalls::call_helper(JavaValue*, methodHandle const&, 
> JavaCallArguments*, JavaThread*) + 710
> 28  libjvm.dylib                         0x11078fb47 
> JavaCalls::call_virtual(JavaValue*, Klass*, Symbol*, Symbol*, 
> JavaCallArguments*, JavaThread*) + 327
> 29  libjvm.dylib                         0x11078fc13 
> JavaCalls::call_virtual(JavaValue*, Handle, Klass*, Symbol*, Symbol*, 
> JavaThread*) + 99
> 30  libjvm.dylib                         0x11083ab94 
> thread_entry(JavaThread*, JavaThread*) + 180
> 31  libjvm.dylib                         0x110d164af 
> JavaThread::thread_main_inner() + 335
> 32  libjvm.dylib                         0x110d1481f 
> Thread::call_run() + 207
> 33  libjvm.dylib                         0x110b1f898 
> thread_native_entry(Thread*) + 328
> 34  libsystem_pthread.dylib          0x7ff8062b4259 _pthread_start + 125
> 35  libsystem_pthread.dylib          0x7ff8062afc7b thread_start + 15
>
>
> With JavaFX 19.0.2.1
> Thread 48 Crashed:: Java: ForkJoinPool-1-worker-2
> 0   libjfxwebkit.dylib                   0x14f2eb9f3 0x14d0d8000 + 
> 35731955
> 1   libjfxwebkit.dylib                   0x14e3744a6 0x14d0d8000 + 
> 19514534
> 2   libjfxwebkit.dylib                   0x14e747d49 0x14d0d8000 + 
> 23526729
> 3   libjfxwebkit.dylib                   0x14e747798 0x14d0d8000 + 
> 23525272
> 4   libjfxwebkit.dylib                   0x14e745b7f 0x14d0d8000 + 
> 23518079
> 5   libjfxwebkit.dylib                   0x14e745837 0x14d0d8000 + 
> 23517239
> 6   libjfxwebkit.dylib                   0x14e749766 0x14d0d8000 + 
> 23533414
> 7   libjfxwebkit.dylib                   0x14e757dc1 0x14d0d8000 + 
> 23592385
> 8   libjfxwebkit.dylib                   0x14e757033 0x14d0d8000 + 
> 23588915
> 9   libjfxwebkit.dylib                   0x14e757aa1 0x14d0d8000 + 
> 23591585
> 10  libjfxwebkit.dylib                   0x14dd3a2ec 0x14d0d8000 + 
> 12985068
> 11  libjfxwebkit.dylib                   0x14dd37344 0x14d0d8000 + 
> 12972868
> 12  libjfxwebkit.dylib                   0x14dddd01b 0x14d0d8000 + 
> 13651995
> 13  libjfxwebkit.dylib                   0x14d18841b 
> Java_com_sun_webkit_dom_NodeImpl_removeChildImpl + 107
> 14  ???                                 0x120a6453a ???
> 15  ???                                 0x120a6035c ???
> 16  ???                                 0x120a606a2 ???
> 17  ???                                 0x120a6042b ???
> 18  ???                                 0x120a6042b ???
> 19  ???                                 0x120a6088f ???
> 20  ???                                 0x120a6042b ???
> 21  ???                                 0x120a60317 ???
> 22  ???                                 0x120a60317 ???
> 23  ???                                 0x120a6042b ???
> 24  ???                                 0x120a60317 ???
> 25  ???                                 0x120a6042b ???
> 26  ???                                 0x120a57cc9 ???
> 27  libjvm.dylib                         0x110e0daf6 
> JavaCalls::call_helper(JavaValue*, methodHandle const&, 
> JavaCallArguments*, JavaThread*) + 710
> 28  libjvm.dylib                         0x110e0cb47 
> JavaCalls::call_virtual(JavaValue*, Klass*, Symbol*, Symbol*, 
> JavaCallArguments*, JavaThread*) + 327
> 29  libjvm.dylib                         0x110e0cc13 
> JavaCalls::call_virtual(JavaValue*, Handle, Klass*, Symbol*, Symbol*, 
> JavaThread*) + 99
> 30  libjvm.dylib                         0x110eb7b94 
> thread_entry(JavaThread*, JavaThread*) + 180
> 31  libjvm.dylib                         0x1113934af 
> JavaThread::thread_main_inner() + 335
> 32  libjvm.dylib                         0x11139181f 
> Thread::call_run() + 207
> 33  libjvm.dylib                         0x11119c898 
> thread_native_entry(Thread*) + 328
> 34  libsystem_pthread.dylib          0x7ff8062b4259 _pthread_start + 125
> 35  libsystem_pthread.dylib          0x7ff8062afc7b thread_start + 15