2007713 - Assertion failure: !needsFrameBitSet (Ancestors of nodes with frames to be constructed lazily should not have NEEDS_FRAME bit set), at /builds/worker/checkouts/gecko/layout/base/nsCSSFrameConstructor.cpp:6094

Status: NEW

(Core :: CSS Parsing and Computation, defect, P3)

Description

[Tyson Smith [:tsmith]]

Attachment: testcase.html

Found while fuzzing m-c 20251024-f9f643c6d608 (--enable-debug --enable-fuzzing)

To reproduce via Grizzly Replay:

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

Assertion failure: !needsFrameBitSet (Ancestors of nodes with frames to be constructed lazily should not have NEEDS_FRAME bit set), at /builds/worker/checkouts/gecko/layout/base/nsCSSFrameConstructor.cpp:6094

#0 0x73de6cf82bb0 in MOZ_CrashSequence /builds/worker/workspace/obj-build/dist/include/mozilla/Assertions.h:237:3
#1 0x73de6cf82bb0 in nsCSSFrameConstructor::CheckBitsForLazyFrameConstruction(nsIContent*) /builds/worker/checkouts/gecko/layout/base/nsCSSFrameConstructor.cpp:6092:3
#2 0x73de6cf82cf1 in nsCSSFrameConstructor::ConstructLazily(nsCSSFrameConstructor::Operation, nsIContent*) /builds/worker/checkouts/gecko/layout/base/nsCSSFrameConstructor.cpp:6145:3
#3 0x73de6cf831fb in nsCSSFrameConstructor::ContentRangeInserted(nsIContent*, nsIContent*, nsCSSFrameConstructor::InsertionKind) /builds/worker/checkouts/gecko/layout/base/nsCSSFrameConstructor.cpp:6735:5
#4 0x73de6cf2cfd5 in mozilla::PresShell::ContentInserted(nsIContent*, ContentAppendInfo const&) /builds/worker/checkouts/gecko/layout/base/PresShell.cpp:4681:22
#5 0x73de68f6955a in operator() /builds/worker/checkouts/gecko/dom/base/MutationObservers.cpp:177:22
#6 0x73de68f6955a in Notify<(NotifyPresShell)2, (lambda at /builds/worker/checkouts/gecko/dom/base/MutationObservers.cpp:177:22)> /builds/worker/checkouts/gecko/dom/base/MutationObservers.cpp:99:7
#7 0x73de68f6955a in mozilla::dom::MutationObservers::NotifyContentInserted(nsINode*, nsIContent*, ContentAppendInfo const&) /builds/worker/checkouts/gecko/dom/base/MutationObservers.cpp:177:3
#8 0x73de69117cfd in nsINode::InsertChildBefore(nsIContent*, nsIContent*, bool, mozilla::ErrorResult&, nsINode*, MutationEffectOnScript) /builds/worker/checkouts/gecko/dom/base/nsINode.cpp:1783:7
#9 0x73de6911fa3e in nsINode::ReplaceOrInsertBefore(bool, nsINode*, nsINode*, MutationEffectOnScript, mozilla::ErrorResult&) /builds/worker/checkouts/gecko/dom/base/nsINode.cpp:3152:5
#10 0x73de6911951d in InsertBeforeInternal /builds/worker/checkouts/gecko/dom/base/nsINode.h:2396:12
#11 0x73de6911951d in InsertBefore /builds/worker/checkouts/gecko/dom/base/nsINode.h:2390:12
#12 0x73de6911951d in nsINode::Before(mozilla::dom::Sequence<mozilla::dom::OwningNodeOrString> const&, mozilla::ErrorResult&) /builds/worker/checkouts/gecko/dom/base/nsINode.cpp:2161:11
#13 0x73de69fc4408 in mozilla::dom::CharacterData_Binding::before(JSContext*, JS::Handle<JSObject*>, void*, JSJitMethodCallArgs const&) /builds/worker/workspace/obj-build/dom/bindings/./CharacterDataBinding.cpp:425:24
#14 0x73de6a306d6d 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:3306:13
#15 0x73de6eea5734 in CallJSNative(JSContext*, bool (*)(JSContext*, unsigned int, JS::Value*), js::CallReason, JS::CallArgs const&) /builds/worker/checkouts/gecko/js/src/vm/Interpreter.cpp:490:13
#16 0x73de6eea4fdf in js::InternalCallOrConstruct(JSContext*, JS::CallArgs const&, js::MaybeConstruct, js::CallReason) /builds/worker/checkouts/gecko/js/src/vm/Interpreter.cpp:586:12
#17 0x73de6eeb5cc2 in CallFromStack /builds/worker/checkouts/gecko/js/src/vm/Interpreter.cpp:658:10
#18 0x73de6eeb5cc2 in js::Interpret(JSContext*, js::RunState&) /builds/worker/checkouts/gecko/js/src/vm/Interpreter.cpp:3272:16
#19 0x73de6eea462a in js::RunScript(JSContext*, js::RunState&) /builds/worker/checkouts/gecko/js/src/vm/Interpreter.cpp:460:13
#20 0x73de6eea5005 in js::InternalCallOrConstruct(JSContext*, JS::CallArgs const&, js::MaybeConstruct, js::CallReason) /builds/worker/checkouts/gecko/js/src/vm/Interpreter.cpp:618:13
#21 0x73de6eea63dc 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:685:8
#22 0x73de6f0e8efb 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
#23 0x73de6a1ad52a in mozilla::dom::EventListener::HandleEvent(mozilla::dom::BindingCallContext&, JS::Handle<JS::Value>, mozilla::dom::Event&, mozilla::ErrorResult&) /builds/worker/workspace/obj-build/dom/bindings/./EventListenerBinding.cpp:62:8
#24 0x73de6ac1a542 in void mozilla::dom::EventListener::HandleEvent<mozilla::dom::EventTarget*>(mozilla::dom::EventTarget* const&, mozilla::dom::Event&, mozilla::ErrorResult&, char const*, mozilla::dom::CallbackObjectBase::ExceptionHandling, JS::Realm*) /builds/worker/workspace/obj-build/dist/include/mozilla/dom/EventListenerBinding.h:65:12
#25 0x73de6ac19f22 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:1282:43
#26 0x73de6ac1b139 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:1594:12
#27 0x73de6ac1aa21 in mozilla::EventListenerManager::HandleEventInternal(nsPresContext*, mozilla::WidgetEvent*, mozilla::dom::Event**, mozilla::dom::EventTarget*, nsEventStatus*, bool) /builds/worker/checkouts/gecko/dom/events/EventListenerManager.cpp:1499:35
#28 0x73de6ac0f2de in HandleEvent /builds/worker/workspace/obj-build/dist/include/mozilla/EventListenerManager.h:465:5
#29 0x73de6ac0f2de in mozilla::EventTargetChainItem::HandleEvent(mozilla::EventChainPostVisitor&, mozilla::ELMCreationDetector&) /builds/worker/checkouts/gecko/dom/events/EventDispatcher.cpp:364:17
#30 0x73de6ac0e9ac in mozilla::EventTargetChainItem::HandleEventTargetChain(nsTArray<mozilla::EventTargetChainItem>&, mozilla::EventChainPostVisitor&, mozilla::EventDispatchingCallback*, mozilla::ELMCreationDetector&) /builds/worker/checkouts/gecko/dom/events/EventDispatcher.cpp:605:16
#31 0x73de6ac11162 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:1260:11
#32 0x73de6ac13cfa in mozilla::EventDispatcher::DispatchDOMEvent(mozilla::dom::EventTarget*, mozilla::WidgetEvent*, mozilla::dom::Event*, nsPresContext*, nsEventStatus*) /builds/worker/checkouts/gecko/dom/events/EventDispatcher.cpp:0:0
#33 0x73de69116446 in nsINode::DispatchEvent(mozilla::dom::Event&, mozilla::dom::CallerType, mozilla::ErrorResult&) /builds/worker/checkouts/gecko/dom/base/nsINode.cpp:1549:17
#34 0x73de68bb5345 in nsContentUtils::DispatchEvent(mozilla::dom::Document*, mozilla::dom::EventTarget*, nsTSubstring<char16_t> const&, mozilla::CanBubble, mozilla::Cancelable, mozilla::Composed, mozilla::Trusted, bool*, mozilla::ChromeOnlyDispatch, mozilla::SystemGroupOnly) /builds/worker/checkouts/gecko/dom/base/nsContentUtils.cpp:5457:29
#35 0x73de68bb5187 in nsContentUtils::DispatchTrustedEvent(mozilla::dom::Document*, mozilla::dom::EventTarget*, nsTSubstring<char16_t> const&, mozilla::CanBubble, mozilla::Cancelable, mozilla::Composed, bool*, mozilla::SystemGroupOnly) /builds/worker/checkouts/gecko/dom/base/nsContentUtils.cpp:5422:10
#36 0x73de68e46fb9 in mozilla::dom::Document::DispatchContentLoadedEvents() /builds/worker/checkouts/gecko/dom/base/Document.cpp:8631:3
#37 0x73de68f14605 in operator()<> /builds/worker/workspace/obj-build/dist/include/nsThreadUtils.h:1083:18
#38 0x73de68f14605 in __invoke_impl<void, (lambda at /builds/worker/workspace/obj-build/dist/include/nsThreadUtils.h:1082:9)> /builds/worker/fetches/sysroot-x86_64-linux-gnu/usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/invoke.h:60:14
#39 0x73de68f14605 in __invoke<(lambda at /builds/worker/workspace/obj-build/dist/include/nsThreadUtils.h:1082:9)> /builds/worker/fetches/sysroot-x86_64-linux-gnu/usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/bits/invoke.h:95:14
#40 0x73de68f14605 in __apply_impl<(lambda at /builds/worker/workspace/obj-build/dist/include/nsThreadUtils.h:1082:9), std::tuple<> &> /builds/worker/fetches/sysroot-x86_64-linux-gnu/usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/tuple:1740:14
#41 0x73de68f14605 in apply<(lambda at /builds/worker/workspace/obj-build/dist/include/nsThreadUtils.h:1082:9), std::tuple<> &> /builds/worker/fetches/sysroot-x86_64-linux-gnu/usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/tuple:1751:14
#42 0x73de68f14605 in apply<mozilla::dom::Document, void (mozilla::dom::Document::*)()> /builds/worker/workspace/obj-build/dist/include/nsThreadUtils.h:1081:12
#43 0x73de68f14605 in mozilla::detail::RunnableMethodImpl<mozilla::dom::Document*, void (mozilla::dom::Document::*)(), true, (mozilla::RunnableKind)0>::Run() /builds/worker/workspace/obj-build/dist/include/nsThreadUtils.h:1132:13
#44 0x73de66e402c7 in mozilla::RunnableTask::Run() /builds/worker/checkouts/gecko/xpcom/threads/TaskController.cpp:705:16
#45 0x73de66e3ac44 in mozilla::TaskController::DoExecuteNextTaskOnlyMainThreadInternal(mozilla::detail::BaseAutoLock<mozilla::Mutex&> const&) /builds/worker/checkouts/gecko/xpcom/threads/TaskController.cpp:1325:20
#46 0x73de66e398c7 in mozilla::TaskController::ExecuteNextTaskOnlyMainThreadInternal(mozilla::detail::BaseAutoLock<mozilla::Mutex&> const&) /builds/worker/checkouts/gecko/xpcom/threads/TaskController.cpp:1148:15
#47 0x73de66e39d45 in mozilla::TaskController::ProcessPendingMTTask(bool) /builds/worker/checkouts/gecko/xpcom/threads/TaskController.cpp:641:36
#48 0x73de66e47146 in operator() /builds/worker/checkouts/gecko/xpcom/threads/TaskController.cpp:333:37
#49 0x73de66e47146 in mozilla::detail::RunnableFunction<mozilla::TaskController::TaskController()::$_0>::Run() /builds/worker/checkouts/gecko/xpcom/threads/nsThreadUtils.h:549:5
#50 0x73de66e59223 in nsThread::ProcessNextEvent(bool, bool*) /builds/worker/checkouts/gecko/xpcom/threads/nsThread.cpp:1164:16
#51 0x73de66e5fb1f in NS_ProcessNextEvent(nsIThread*, bool) /builds/worker/checkouts/gecko/xpcom/threads/nsThreadUtils.cpp:461:10
#52 0x73de67a48a17 in mozilla::ipc::MessagePump::Run(base::MessagePump::Delegate*) /builds/worker/checkouts/gecko/ipc/glue/MessagePump.cpp:85:21
#53 0x73de679a2681 in RunHandler /builds/worker/checkouts/gecko/ipc/chromium/src/base/message_loop.cc:361:3
#54 0x73de679a2681 in MessageLoop::Run() /builds/worker/checkouts/gecko/ipc/chromium/src/base/message_loop.cc:343:3
#55 0x73de6caeac58 in nsBaseAppShell::Run() /builds/worker/checkouts/gecko/widget/nsBaseAppShell.cpp:152:27
#56 0x73de6cbb8164 in nsAppShell::Run() /builds/worker/checkouts/gecko/widget/gtk/nsAppShell.cpp:555:33
#57 0x73de6dc02cab in XRE_RunAppShell() /builds/worker/checkouts/gecko/toolkit/xre/nsEmbedFunctions.cpp:656:20
#58 0x73de67a498c4 in mozilla::ipc::MessagePumpForChildProcess::Run(base::MessagePump::Delegate*) /builds/worker/checkouts/gecko/ipc/glue/MessagePump.cpp:235:9
#59 0x73de679a2681 in RunHandler /builds/worker/checkouts/gecko/ipc/chromium/src/base/message_loop.cc:361:3
#60 0x73de679a2681 in MessageLoop::Run() /builds/worker/checkouts/gecko/ipc/chromium/src/base/message_loop.cc:343:3
#61 0x73de6dc02401 in XRE_InitChildProcess(int, char**, XREChildData const*) /builds/worker/checkouts/gecko/toolkit/xre/nsEmbedFunctions.cpp:594:34
#62 0x5ac73a5c2f1c in main /builds/worker/checkouts/gecko/browser/app/nsBrowserApp.cpp:465:22

Comment 1

[Bugmon [:jkratzer for issues]]

Verified bug as reproducible on mozilla-central 20251224210403-bd70d95c6560.
The bug appears to have been introduced in the following build range:

Start: 9109c36f1b47fe5bebbb653c091caee721c22f15 (20250721163421)
End: 4d9976f639cdeb1ead4e4d0ed597b07cb248ae23 (20250721164045)
Pushlog: https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=9109c36f1b47fe5bebbb653c091caee721c22f15&tochange=4d9976f639cdeb1ead4e4d0ed597b07cb248ae23

Comment 2

[BugBot [:suhaib / :marco/ :calixte]]

:anba, since you are the author of the regressor, bug 1977539, could you take a look?

For more information, please visit BugBot documentation.

Comment 3

[Emilio Cobos Álvarez [:emilio]]

Pretty sure this is from bug 1923880 instead.

Comment 4

[Bugmon [:jkratzer for issues]]

Unable to reproduce bug 2007713 using build mozilla-central 20251024094538-f9f643c6d608. Without a baseline, bugmon is unable to analyze this bug.
Removing bugmon keyword as no further action possible. Please review the bug and re-add the keyword for further analysis.