Found while fuzzing m-c 20240329-33becba24b3c (--enable-debug --enable-fuzzing)

To reproduce via Grizzly Replay:

$ pip install fuzzfetch grizzly-framework
$ python -m fuzzfetch -d --fuzzing -n firefox
$ python -m grizzly.replay.bugzilla ./firefox/firefox <bugid>

Assertion failure: startContent->IsInComposedDoc(), at /builds/worker/checkouts/gecko/dom/base/Selection.cpp:1822

#0 0x7aea3c299284 in mozilla::dom::Selection::SelectFrames(nsPresContext*, mozilla::dom::AbstractRange&, bool) const /builds/worker/checkouts/gecko/dom/base/Selection.cpp:1822:3
#1 0x7aea3c2a10a8 in mozilla::dom::Selection::Repaint(nsPresContext*) /builds/worker/checkouts/gecko/dom/base/Selection.cpp:2021:9
#2 0x7aea441eb90f in nsDocViewerFocusListener::HandleEvent(mozilla::dom::Event*) /builds/worker/checkouts/gecko/layout/base/nsDocumentViewer.cpp:2845:18
#3 0x7aea3f68c639 in mozilla::EventListenerManager::HandleEventSingleListener(mozilla::EventListenerManager::Listener*, nsAtom*, mozilla::WidgetEvent*, mozilla::dom::Event*, mozilla::dom::EventTarget*, bool) /builds/worker/checkouts/gecko/dom/events/EventListenerManager.cpp:1313:22
#4 0x7aea3f68f07a in mozilla::EventListenerManager::HandleEventWithListenerArray(mozilla::EventListenerManager::ListenerArray*, nsAtom*, mozilla::EventMessage, nsPresContext*, mozilla::WidgetEvent*, mozilla::dom::Event**, mozilla::dom::EventTarget*, bool) /builds/worker/checkouts/gecko/dom/events/EventListenerManager.cpp:1630:12
#5 0x7aea3f68dab6 in mozilla::EventListenerManager::HandleEventInternal(nsPresContext*, mozilla::WidgetEvent*, mozilla::dom::Event**, mozilla::dom::EventTarget*, nsEventStatus*, bool) /builds/worker/checkouts/gecko/dom/events/EventListenerManager.cpp:1527:35
#6 0x7aea3f670f42 in mozilla::EventTargetChainItem::HandleEvent(mozilla::EventChainPostVisitor&, mozilla::ELMCreationDetector&) /builds/worker/checkouts/gecko/dom/events/EventDispatcher.cpp:365:17
#7 0x7aea3f66e5d7 in mozilla::EventTargetChainItem::HandleEventTargetChain(nsTArray<mozilla::EventTargetChainItem>&, mozilla::EventChainPostVisitor&, mozilla::EventDispatchingCallback*, mozilla::ELMCreationDetector&) /builds/worker/checkouts/gecko/dom/events/EventDispatcher.cpp:606:16
#8 0x7aea3f675ef4 in mozilla::EventDispatcher::Dispatch(mozilla::dom::EventTarget*, nsPresContext*, mozilla::WidgetEvent*, mozilla::dom::Event*, nsEventStatus*, mozilla::EventDispatchingCallback*, nsTArray<mozilla::dom::EventTarget*>*) /builds/worker/checkouts/gecko/dom/events/EventDispatcher.cpp:1221:11
#9 0x7aea3c446ea3 in FocusBlurEvent::Run() /builds/worker/checkouts/gecko/dom/base/nsFocusManager.cpp:2783:12
#10 0x7aea3bb8200a in nsContentUtils::AddScriptRunner(already_AddRefed<nsIRunnable>) /builds/worker/checkouts/gecko/dom/base/nsContentUtils.cpp:6227:13
#11 0x7aea3c41c3dd in nsFocusManager::FireFocusOrBlurEvent(mozilla::EventMessage, mozilla::PresShell*, mozilla::dom::EventTarget*, bool, bool, mozilla::dom::EventTarget*) /builds/worker/checkouts/gecko/dom/base/nsFocusManager.cpp:2924:3
#12 0x7aea3c41ae9c in nsFocusManager::SendFocusOrBlurEvent(mozilla::EventMessage, mozilla::PresShell*, mozilla::dom::Document*, mozilla::dom::EventTarget*, bool, bool, mozilla::dom::EventTarget*) /builds/worker/checkouts/gecko/dom/base/nsFocusManager.cpp:2895:3
#13 0x7aea3c424285 in nsFocusManager::BlurImpl(mozilla::dom::BrowsingContext*, mozilla::dom::BrowsingContext*, bool, bool, bool, mozilla::dom::Element*, unsigned long) /builds/worker/checkouts/gecko/dom/base/nsFocusManager.cpp:2470:7
#14 0x7aea3c40d7f7 in nsFocusManager::Blur(mozilla::dom::BrowsingContext*, mozilla::dom::BrowsingContext*, bool, bool, bool, unsigned long, mozilla::dom::Element*) /builds/worker/checkouts/gecko/dom/base/nsFocusManager.cpp:2219:12
#15 0x7aea3c413ee4 in nsFocusManager::WindowLowered(mozIDOMWindowProxy*, unsigned long) /builds/worker/checkouts/gecko/dom/base/nsFocusManager.cpp:838:5
#16 0x7aea47e2a5d9 in nsWebBrowser::FocusDeactivate(unsigned long) /builds/worker/checkouts/gecko/toolkit/components/browser/nsWebBrowser.cpp:1215:11
#17 0x7aea423bb719 in mozilla::dom::BrowserChild::RecvDeactivate(unsigned long) /builds/worker/checkouts/gecko/dom/ipc/BrowserChild.cpp:1416:16
#18 0x7aea426295c0 in mozilla::dom::PBrowserChild::OnMessageReceived(IPC::Message const&) /builds/worker/workspace/obj-build/ipc/ipdl/PBrowserChild.cpp:4622:80
#19 0x7aea4275e2dc in mozilla::dom::PContentChild::OnMessageReceived(IPC::Message const&) /builds/worker/workspace/obj-build/ipc/ipdl/PContentChild.cpp:8281:32
#20 0x7aea39d6ab25 in mozilla::ipc::MessageChannel::DispatchAsyncMessage(mozilla::ipc::ActorLifecycleProxy*, IPC::Message const&) /builds/worker/checkouts/gecko/ipc/glue/MessageChannel.cpp:1818:25
#21 0x7aea39d6652b in mozilla::ipc::MessageChannel::DispatchMessage(mozilla::ipc::ActorLifecycleProxy*, mozilla::UniquePtr<IPC::Message, mozilla::DefaultDelete<IPC::Message>>) /builds/worker/checkouts/gecko/ipc/glue/MessageChannel.cpp:1737:9
#22 0x7aea39d678d9 in mozilla::ipc::MessageChannel::RunMessage(mozilla::ipc::ActorLifecycleProxy*, mozilla::ipc::MessageChannel::MessageTask&) /builds/worker/checkouts/gecko/ipc/glue/MessageChannel.cpp:1530:3
#23 0x7aea39d68e53 in mozilla::ipc::MessageChannel::MessageTask::Run() /builds/worker/checkouts/gecko/ipc/glue/MessageChannel.cpp:1628:14
#24 0x7aea38014dea in mozilla::RunnableTask::Run() /builds/worker/checkouts/gecko/xpcom/threads/TaskController.cpp:578:16
#25 0x7aea37ffa67b in mozilla::TaskController::DoExecuteNextTaskOnlyMainThreadInternal(mozilla::detail::BaseAutoLock<mozilla::Mutex&> const&) /builds/worker/checkouts/gecko/xpcom/threads/TaskController.cpp:905:26
#26 0x7aea37ff7258 in mozilla::TaskController::ExecuteNextTaskOnlyMainThreadInternal(mozilla::detail::BaseAutoLock<mozilla::Mutex&> const&) /builds/worker/checkouts/gecko/xpcom/threads/TaskController.cpp:728:15
#27 0x7aea37ff7959 in mozilla::TaskController::ProcessPendingMTTask(bool) /builds/worker/checkouts/gecko/xpcom/threads/TaskController.cpp:514:36
#28 0x7aea3801cf14 in operator() /builds/worker/checkouts/gecko/xpcom/threads/TaskController.cpp:235:37
#29 0x7aea3801cf14 in mozilla::detail::RunnableFunction<mozilla::TaskController::TaskController()::$_1>::Run() /builds/worker/checkouts/gecko/xpcom/threads/nsThreadUtils.h:548:5
#30 0x7aea38044e7f in nsThread::ProcessNextEvent(bool, bool*) /builds/worker/checkouts/gecko/xpcom/threads/nsThread.cpp:1199:16
#31 0x7aea38052b3a in NS_ProcessNextEvent(nsIThread*, bool) /builds/worker/checkouts/gecko/xpcom/threads/nsThreadUtils.cpp:480:10
#32 0x7aea430e3374 in SpinEventLoopUntil<(mozilla::ProcessFailureBehavior)1, (lambda at /builds/worker/checkouts/gecko/dom/xhr/XMLHttpRequestMainThread.cpp:3263:29)> /builds/worker/workspace/obj-build/dist/include/mozilla/SpinEventLoopUntil.h:176:25
#33 0x7aea430e3374 in mozilla::dom::XMLHttpRequestMainThread::SendInternal(mozilla::dom::BodyExtractorBase const*, bool, mozilla::ErrorResult&) /builds/worker/checkouts/gecko/dom/xhr/XMLHttpRequestMainThread.cpp:3262:10
#34 0x7aea430e0963 in mozilla::dom::XMLHttpRequestMainThread::Send(mozilla::dom::Nullable<mozilla::dom::DocumentOrBlobOrArrayBufferViewOrArrayBufferOrFormDataOrURLSearchParamsOrUSVString> const&, mozilla::ErrorResult&) /builds/worker/checkouts/gecko/dom/xhr/XMLHttpRequestMainThread.cpp:3005:5
#35 0x7aea3ddd2383 in mozilla::dom::XMLHttpRequest_Binding::send(JSContext*, JS::Handle<JSObject*>, void*, JSJitMethodCallArgs const&) /builds/worker/workspace/obj-build/dom/bindings/./XMLHttpRequestBinding.cpp:1682:24
#36 0x7aea3e803a14 in bool mozilla::dom::binding_detail::GenericMethod<mozilla::dom::binding_detail::NormalThisPolicy, mozilla::dom::binding_detail::ThrowExceptions>(JSContext*, unsigned int, JS::Value*) /builds/worker/checkouts/gecko/dom/bindings/BindingUtils.cpp:3269:13
#37 0x7aea48b8e8f5 in CallJSNative /builds/worker/checkouts/gecko/js/src/vm/Interpreter.cpp:479:13
#38 0x7aea48b8e8f5 in js::InternalCallOrConstruct(JSContext*, JS::CallArgs const&, js::MaybeConstruct, js::CallReason) /builds/worker/checkouts/gecko/js/src/vm/Interpreter.cpp:573:12
#39 0x7aea48bb3aa5 in InternalCall /builds/worker/checkouts/gecko/js/src/vm/Interpreter.cpp:640:10
#40 0x7aea48bb3aa5 in CallFromStack /builds/worker/checkouts/gecko/js/src/vm/Interpreter.cpp:645:10
#41 0x7aea48bb3aa5 in js::Interpret(JSContext*, js::RunState&) /builds/worker/checkouts/gecko/js/src/vm/Interpreter.cpp:3060:16
#42 0x7aea48b8d677 in MaybeEnterInterpreterTrampoline /builds/worker/checkouts/gecko/js/src/vm/Interpreter.cpp:393:10
#43 0x7aea48b8d677 in js::RunScript(JSContext*, js::RunState&) /builds/worker/checkouts/gecko/js/src/vm/Interpreter.cpp:451:13
#44 0x7aea48b8ea5e in js::InternalCallOrConstruct(JSContext*, JS::CallArgs const&, js::MaybeConstruct, js::CallReason) /builds/worker/checkouts/gecko/js/src/vm/Interpreter.cpp:605:13
#45 0x7aea48b909e6 in InternalCall /builds/worker/checkouts/gecko/js/src/vm/Interpreter.cpp:640:10
#46 0x7aea48b909e6 in js::Call(JSContext*, JS::Handle<JS::Value>, JS::Handle<JS::Value>, js::AnyInvokeArgs const&, JS::MutableHandle<JS::Value>, js::CallReason) /builds/worker/checkouts/gecko/js/src/vm/Interpreter.cpp:672:8
#47 0x7aea48d51f7b in JS::Call(JSContext*, JS::Handle<JS::Value>, JS::Handle<JS::Value>, JS::HandleValueArray const&, JS::MutableHandle<JS::Value>) /builds/worker/checkouts/gecko/js/src/vm/CallAndConstruct.cpp:119:10
#48 0x7aea3e4bcdcd in mozilla::dom::Function::Call(mozilla::dom::BindingCallContext&, JS::Handle<JS::Value>, nsTArray<JS::Value> const&, JS::MutableHandle<JS::Value>, mozilla::ErrorResult&) /builds/worker/workspace/obj-build/dom/bindings/./FunctionBinding.cpp:50:8
#49 0x7aea3c3330c3 in void mozilla::dom::Function::Call<nsCOMPtr<nsIGlobalObject>>(nsCOMPtr<nsIGlobalObject> const&, nsTArray<JS::Value> const&, JS::MutableHandle<JS::Value>, mozilla::ErrorResult&, char const*, mozilla::dom::CallbackObject::ExceptionHandling, JS::Realm*) /builds/worker/workspace/obj-build/dist/include/mozilla/dom/FunctionBinding.h:71:12
#50 0x7aea3c332ca2 in mozilla::dom::CallbackTimeoutHandler::Call(char const*) /builds/worker/checkouts/gecko/dom/base/TimeoutHandler.cpp:168:29
#51 0x7aea3bccd8e8 in nsGlobalWindowInner::RunTimeoutHandler(mozilla::dom::Timeout*, nsIScriptContext*) /builds/worker/checkouts/gecko/dom/base/nsGlobalWindowInner.cpp:6327:38
#52 0x7aea3c32c674 in mozilla::dom::TimeoutManager::RunTimeout(mozilla::TimeStamp const&, mozilla::TimeStamp const&, bool) /builds/worker/checkouts/gecko/dom/base/TimeoutManager.cpp:879:44
#53 0x7aea3c32b073 in mozilla::dom::TimeoutExecutor::MaybeExecute() /builds/worker/checkouts/gecko/dom/base/TimeoutExecutor.cpp:179:11
#54 0x7aea3c32ee7e in Notify /builds/worker/checkouts/gecko/dom/base/TimeoutExecutor.cpp:246:5
#55 0x7aea3c32ee7e in non-virtual thunk to mozilla::dom::TimeoutExecutor::Notify(nsITimer*) /builds/worker/checkouts/gecko/dom/base/TimeoutExecutor.cpp
#56 0x7aea3802afb5 in operator() /builds/worker/checkouts/gecko/xpcom/threads/nsTimerImpl.cpp:677:44
#57 0x7aea3802afb5 in matchN<mozilla::Variant<nsTimerImpl::UnknownCallback, nsCOMPtr<nsITimerCallback>, nsCOMPtr<nsIObserver>, nsTimerImpl::FuncCallback, nsTimerImpl::ClosureCallback> &, (lambda at /builds/worker/checkouts/gecko/xpcom/threads/nsTimerImpl.cpp:677:7), (lambda at /builds/worker/checkouts/gecko/xpcom/threads/nsTimerImpl.cpp:678:7), (lambda at /builds/worker/checkouts/gecko/xpcom/threads/nsTimerImpl.cpp:681:7), (lambda at /builds/worker/checkouts/gecko/xpcom/threads/nsTimerImpl.cpp:682:7)> /builds/worker/workspace/obj-build/dist/include/mozilla/Variant.h:309:16
#58 0x7aea3802afb5 in matchN<mozilla::Variant<nsTimerImpl::UnknownCallback, nsCOMPtr<nsITimerCallback>, nsCOMPtr<nsIObserver>, nsTimerImpl::FuncCallback, nsTimerImpl::ClosureCallback> &, (lambda at /builds/worker/checkouts/gecko/xpcom/threads/nsTimerImpl.cpp:676:7), (lambda at /builds/worker/checkouts/gecko/xpcom/threads/nsTimerImpl.cpp:677:7), (lambda at /builds/worker/checkouts/gecko/xpcom/threads/nsTimerImpl.cpp:678:7), (lambda at /builds/worker/checkouts/gecko/xpcom/threads/nsTimerImpl.cpp:681:7), (lambda at /builds/worker/checkouts/gecko/xpcom/threads/nsTimerImpl.cpp:682:7)> /builds/worker/workspace/obj-build/dist/include/mozilla/Variant.h:318:14
#59 0x7aea3802afb5 in matchN<mozilla::Variant<nsTimerImpl::UnknownCallback, nsCOMPtr<nsITimerCallback>, nsCOMPtr<nsIObserver>, nsTimerImpl::FuncCallback, nsTimerImpl::ClosureCallback> &, (lambda at /builds/worker/checkouts/gecko/xpcom/threads/nsTimerImpl.cpp:676:7), (lambda at /builds/worker/checkouts/gecko/xpcom/threads/nsTimerImpl.cpp:677:7), (lambda at /builds/worker/checkouts/gecko/xpcom/threads/nsTimerImpl.cpp:678:7), (lambda at /builds/worker/checkouts/gecko/xpcom/threads/nsTimerImpl.cpp:681:7), (lambda at /builds/worker/checkouts/gecko/xpcom/threads/nsTimerImpl.cpp:682:7)> /builds/worker/workspace/obj-build/dist/include/mozilla/Variant.h:902:12
#60 0x7aea3802afb5 in match<(lambda at /builds/worker/checkouts/gecko/xpcom/threads/nsTimerImpl.cpp:676:7), (lambda at /builds/worker/checkouts/gecko/xpcom/threads/nsTimerImpl.cpp:677:7), (lambda at /builds/worker/checkouts/gecko/xpcom/threads/nsTimerImpl.cpp:678:7), (lambda at /builds/worker/checkouts/gecko/xpcom/threads/nsTimerImpl.cpp:681:7), (lambda at /builds/worker/checkouts/gecko/xpcom/threads/nsTimerImpl.cpp:682:7)> /builds/worker/workspace/obj-build/dist/include/mozilla/Variant.h:857:12
#61 0x7aea3802afb5 in nsTimerImpl::Fire(int) /builds/worker/checkouts/gecko/xpcom/threads/nsTimerImpl.cpp:675:22
#62 0x7aea38029274 in nsTimerEvent::Run() /builds/worker/checkouts/gecko/xpcom/threads/TimerThread.cpp:515:11
#63 0x7aea3807092e in mozilla::ThrottledEventQueue::Inner::ExecuteRunnable() /builds/worker/checkouts/gecko/xpcom/threads/ThrottledEventQueue.cpp:254:22
#64 0x7aea3806a07f in mozilla::ThrottledEventQueue::Inner::Executor::Run() /builds/worker/checkouts/gecko/xpcom/threads/ThrottledEventQueue.cpp:81:15
#65 0x7aea38014dea in mozilla::RunnableTask::Run() /builds/worker/checkouts/gecko/xpcom/threads/TaskController.cpp:578:16
#66 0x7aea37ffa67b in mozilla::TaskController::DoExecuteNextTaskOnlyMainThreadInternal(mozilla::detail::BaseAutoLock<mozilla::Mutex&> const&) /builds/worker/checkouts/gecko/xpcom/threads/TaskController.cpp:905:26
#67 0x7aea37ff7258 in mozilla::TaskController::ExecuteNextTaskOnlyMainThreadInternal(mozilla::detail::BaseAutoLock<mozilla::Mutex&> const&) /builds/worker/checkouts/gecko/xpcom/threads/TaskController.cpp:728:15
#68 0x7aea37ff7959 in mozilla::TaskController::ProcessPendingMTTask(bool) /builds/worker/checkouts/gecko/xpcom/threads/TaskController.cpp:514:36
#69 0x7aea3801cf14 in operator() /builds/worker/checkouts/gecko/xpcom/threads/TaskController.cpp:235:37
#70 0x7aea3801cf14 in mozilla::detail::RunnableFunction<mozilla::TaskController::TaskController()::$_1>::Run() /builds/worker/checkouts/gecko/xpcom/threads/nsThreadUtils.h:548:5
#71 0x7aea38044e7f in nsThread::ProcessNextEvent(bool, bool*) /builds/worker/checkouts/gecko/xpcom/threads/nsThread.cpp:1199:16
#72 0x7aea38052b3a in NS_ProcessNextEvent(nsIThread*, bool) /builds/worker/checkouts/gecko/xpcom/threads/nsThreadUtils.cpp:480:10
#73 0x7aea39d740b3 in mozilla::ipc::MessagePump::Run(base::MessagePump::Delegate*) /builds/worker/checkouts/gecko/ipc/glue/MessagePump.cpp:107:5
#74 0x7aea39b92d9a in RunInternal /builds/worker/checkouts/gecko/ipc/chromium/src/base/message_loop.cc:370:10
#75 0x7aea39b92d9a in RunHandler /builds/worker/checkouts/gecko/ipc/chromium/src/base/message_loop.cc:363:3
#76 0x7aea39b92d9a in MessageLoop::Run() /builds/worker/checkouts/gecko/ipc/chromium/src/base/message_loop.cc:345:3
#77 0x7aea43745499 in nsBaseAppShell::Run() /builds/worker/checkouts/gecko/widget/nsBaseAppShell.cpp:148:27
#78 0x7aea43958d32 in nsAppShell::Run() /builds/worker/checkouts/gecko/widget/gtk/nsAppShell.cpp:470:33
#79 0x7aea4873315e in XRE_RunAppShell() /builds/worker/checkouts/gecko/toolkit/xre/nsEmbedFunctions.cpp:712:20
#80 0x7aea39b92d9a in RunInternal /builds/worker/checkouts/gecko/ipc/chromium/src/base/message_loop.cc:370:10
#81 0x7aea39b92d9a in RunHandler /builds/worker/checkouts/gecko/ipc/chromium/src/base/message_loop.cc:363:3
#82 0x7aea39b92d9a in MessageLoop::Run() /builds/worker/checkouts/gecko/ipc/chromium/src/base/message_loop.cc:345:3
#83 0x7aea487326b3 in XRE_InitChildProcess(int, char**, XREChildData const*) /builds/worker/checkouts/gecko/toolkit/xre/nsEmbedFunctions.cpp:647:34
#84 0x5f96fedb3b5c in content_process_main /builds/worker/checkouts/gecko/browser/app/../../ipc/contentproc/plugin-container.cpp:57:28
#85 0x5f96fedb3b5c in main /builds/worker/checkouts/gecko/browser/app/nsBrowserApp.cpp:375:18
#86 0x7aea60e29d8f in __libc_start_call_main csu/../sysdeps/nptl/libc_start_call_main.h:58:16
#87 0x7aea60e29e3f in __libc_start_main csu/../csu/libc-start.c:392:3
#88 0x5f96fecd7e68 in _start (/home/user/workspace/browsers/m-c-20240410204322-fuzzing-asan-opt/firefox+0xdce68) (BuildId: 91570145573b9dc0202ad5b1385b2307977478aa)

Verified bug as reproducible on mozilla-central 20240410204322-e2456ba9a2f6.
The bug appears to have been introduced in the following build range:

Start: 5969005dae85cc8ac486b2f0bdbb7454b660f252 (20240325134037)
End: 19dcff1ee3fcbb431110e0639c80a3ba51ee0a34 (20240325140555)
Pushlog: https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=5969005dae85cc8ac486b2f0bdbb7454b660f252&tochange=19dcff1ee3fcbb431110e0639c80a3ba51ee0a34

Set release status flags based on info from the regressing bug 1867058

:sefeng, since you are the author of the regressor, bug 1867058, could you take a look? Also, could you set the severity field?

For more information, please visit BugBot documentation.

Got a crash from the testcase: https://crash-stats.mozilla.org/report/index/a2d99611-82ac-415e-a670-b05c40240411

If the end point is at a shadow root, and the corresponding host node is
removed from DOM, we should clear this mCrossShadowBoundaryRange for it.

https://hg.mozilla.org/mozilla-central/rev/a6c95ed12e51

Verified bug as fixed on rev mozilla-central 20240411213648-036ac9a41b52.
Removing bugmon keyword as no further action possible. Please review the bug and re-add the keyword for further analysis.