1832447 - Assertion failure: aChild->mParent (No parent), at /builds/worker/checkouts/gecko/accessible/generic/LocalAccessible.cpp:2634

Status: VERIFIED FIXED

(Core :: Disability Access APIs, defect)

Description

[Tyson Smith [:tsmith]]

Attachment: testcase.html

Found while fuzzing m-c 20230509-169e7173a60f (--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 ./firefox/firefox testcase.html

Assertion failure: aChild->mParent (No parent), at /builds/worker/checkouts/gecko/accessible/generic/LocalAccessible.cpp:2634

#0 0x7f43dc16690f in mozilla::a11y::LocalAccessible::RemoveChild(mozilla::a11y::LocalAccessible*) /builds/worker/checkouts/gecko/accessible/generic/LocalAccessible.cpp:2634:3
#1 0x7f43dc15dff5 in mozilla::a11y::DocAccessible::MoveChild(mozilla::a11y::LocalAccessible*, mozilla::a11y::LocalAccessible*, int) /builds/worker/checkouts/gecko/accessible/generic/DocAccessible.cpp:2524:14
#2 0x7f43dc15f2bb in mozilla::a11y::DocAccessible::PutChildrenBack(nsTArray<RefPtr<mozilla::a11y::LocalAccessible>>*, unsigned int) /builds/worker/checkouts/gecko/accessible/generic/DocAccessible.cpp:2436:31
#3 0x7f43dc15e561 in mozilla::a11y::DocAccessible::UncacheChildrenInSubtree(mozilla::a11y::LocalAccessible*) /builds/worker/checkouts/gecko/accessible/generic/DocAccessible.cpp:2608:5
#4 0x7f43dc1567dd in mozilla::a11y::DocAccessible::ContentRemoved(mozilla::a11y::LocalAccessible*) /builds/worker/checkouts/gecko/accessible/generic/DocAccessible.cpp:2190:3
#5 0x7f43dc1528f2 in mozilla::a11y::DocAccessible::ContentRemoved(nsIContent*) /builds/worker/checkouts/gecko/accessible/generic/DocAccessible.cpp:2200:5
#6 0x7f43dc152967 in mozilla::a11y::DocAccessible::ContentRemoved(nsIContent*) /builds/worker/checkouts/gecko/accessible/generic/DocAccessible.cpp:2206:5
#7 0x7f43dc152967 in mozilla::a11y::DocAccessible::ContentRemoved(nsIContent*) /builds/worker/checkouts/gecko/accessible/generic/DocAccessible.cpp:2206:5
#8 0x7f43dc12e838 in nsAccessibilityService::ContentRemoved(mozilla::PresShell*, nsIContent*) /builds/worker/checkouts/gecko/accessible/base/nsAccessibilityService.cpp:677:15
#9 0x7f43da99dde2 in nsCSSFrameConstructor::ContentRemoved(nsIContent*, nsIContent*, nsCSSFrameConstructor::RemoveFlags) /builds/worker/checkouts/gecko/layout/base/nsCSSFrameConstructor.cpp:7494:21
#10 0x7f43da93bcc9 in mozilla::PresShell::ContentRemoved(nsIContent*, nsIContent*) /builds/worker/checkouts/gecko/layout/base/PresShell.cpp:4586:22
#11 0x7f43d6ecc942 in operator() /builds/worker/checkouts/gecko/dom/base/MutationObservers.cpp:174:19
#12 0x7f43d6ecc942 in Notify<(NotifyPresShell)1, (lambda at /builds/worker/checkouts/gecko/dom/base/MutationObservers.cpp:174:19)> /builds/worker/checkouts/gecko/dom/base/MutationObservers.cpp:87:7
#13 0x7f43d6ecc942 in mozilla::dom::MutationObservers::NotifyContentRemoved(nsINode*, nsIContent*, nsIContent*) /builds/worker/checkouts/gecko/dom/base/MutationObservers.cpp:173:3
#14 0x7f43d7051081 in nsINode::RemoveChildNode(nsIContent*, bool) /builds/worker/checkouts/gecko/dom/base/nsINode.cpp:2226:5
#15 0x7f43d6db61a3 in mozilla::dom::Document::RemoveChildNode(nsIContent*, bool) /builds/worker/checkouts/gecko/dom/base/Document.cpp:7336:12
#16 0x7f43d705362a in nsINode::ReplaceOrInsertBefore(bool, nsINode*, nsINode*, mozilla::ErrorResult&) /builds/worker/checkouts/gecko/dom/base/nsINode.cpp:2755:5
#17 0x7f43d760514c in ReplaceChild /builds/worker/checkouts/gecko/dom/base/nsINode.h:2121:12
#18 0x7f43d760514c in mozilla::dom::Node_Binding::replaceChild(JSContext*, JS::Handle<JSObject*>, void*, JSJitMethodCallArgs const&) /builds/worker/workspace/obj-build/dom/bindings/NodeBinding.cpp:1074:60
#19 0x7f43d8533568 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:3335:13
#20 0x7f43dca3bb75 in CallJSNative(JSContext*, bool (*)(JSContext*, unsigned int, JS::Value*), js::CallReason, JS::CallArgs const&) /builds/worker/checkouts/gecko/js/src/vm/Interpreter.cpp:486:13
#21 0x7f43dca3b503 in js::InternalCallOrConstruct(JSContext*, JS::CallArgs const&, js::MaybeConstruct, js::CallReason) /builds/worker/checkouts/gecko/js/src/vm/Interpreter.cpp:580:12
#22 0x7f43dca4cb8b in CallFromStack /builds/worker/checkouts/gecko/js/src/vm/Interpreter.cpp:652:10
#23 0x7f43dca4cb8b in js::Interpret(JSContext*, js::RunState&) /builds/worker/checkouts/gecko/js/src/vm/Interpreter.cpp:3395:16
#24 0x7f43dca3a97d in js::RunScript(JSContext*, js::RunState&) /builds/worker/checkouts/gecko/js/src/vm/Interpreter.cpp:458:13
#25 0x7f43dca3b37f in js::InternalCallOrConstruct(JSContext*, JS::CallArgs const&, js::MaybeConstruct, js::CallReason) /builds/worker/checkouts/gecko/js/src/vm/Interpreter.cpp:612:13
#26 0x7f43dca3c8fd 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:679:8
#27 0x7f43dcb18182 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:117:10
#28 0x7f43d8208e5c 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
#29 0x7f43d8b38856 in void mozilla::dom::EventListener::HandleEvent<mozilla::dom::EventTarget*>(mozilla::dom::EventTarget* const&, mozilla::dom::Event&, mozilla::ErrorResult&, char const*, mozilla::dom::CallbackObject::ExceptionHandling, JS::Realm*) /builds/worker/workspace/obj-build/dist/include/mozilla/dom/EventListenerBinding.h:65:12
#30 0x7f43d8b3863a in mozilla::EventListenerManager::HandleEventSubType(mozilla::EventListenerManager::Listener*, mozilla::dom::Event*, mozilla::dom::EventTarget*) /builds/worker/checkouts/gecko/dom/events/EventListenerManager.cpp:1327:43
#31 0x7f43d8b39003 in mozilla::EventListenerManager::HandleEventInternal(nsPresContext*, mozilla::WidgetEvent*, mozilla::dom::Event**, mozilla::dom::EventTarget*, nsEventStatus*, bool) /builds/worker/checkouts/gecko/dom/events/EventListenerManager.cpp:1502:17
#32 0x7f43d8b2df08 in HandleEvent /builds/worker/workspace/obj-build/dist/include/mozilla/EventListenerManager.h:405:5
#33 0x7f43d8b2df08 in mozilla::EventTargetChainItem::HandleEvent(mozilla::EventChainPostVisitor&, mozilla::ELMCreationDetector&) /builds/worker/checkouts/gecko/dom/events/EventDispatcher.cpp:347:17
#34 0x7f43d8b2d494 in mozilla::EventTargetChainItem::HandleEventTargetChain(nsTArray<mozilla::EventTargetChainItem>&, mozilla::EventChainPostVisitor&, mozilla::EventDispatchingCallback*, mozilla::ELMCreationDetector&) /builds/worker/checkouts/gecko/dom/events/EventDispatcher.cpp:549:16
#35 0x7f43d8b2fc43 in mozilla::EventDispatcher::Dispatch(nsISupports*, nsPresContext*, mozilla::WidgetEvent*, mozilla::dom::Event*, nsEventStatus*, mozilla::EventDispatchingCallback*, nsTArray<mozilla::dom::EventTarget*>*) /builds/worker/checkouts/gecko/dom/events/EventDispatcher.cpp:1137:11
#36 0x7f43d8b329ca in mozilla::EventDispatcher::DispatchDOMEvent(nsISupports*, mozilla::WidgetEvent*, mozilla::dom::Event*, nsPresContext*, nsEventStatus*) /builds/worker/checkouts/gecko/dom/events/EventDispatcher.cpp
#37 0x7f43d704abc9 in nsINode::DispatchEvent(mozilla::dom::Event&, mozilla::dom::CallerType, mozilla::ErrorResult&) /builds/worker/checkouts/gecko/dom/base/nsINode.cpp:1399:17
#38 0x7f43d6b5aa35 in nsContentUtils::DispatchEvent(mozilla::dom::Document*, nsISupports*, nsTSubstring<char16_t> const&, mozilla::CanBubble, mozilla::Cancelable, mozilla::Composed, mozilla::Trusted, bool*, mozilla::ChromeOnlyDispatch) /builds/worker/checkouts/gecko/dom/base/nsContentUtils.cpp:4645:28
#39 0x7f43d6b5a832 in nsContentUtils::DispatchTrustedEvent(mozilla::dom::Document*, nsISupports*, nsTSubstring<char16_t> const&, mozilla::CanBubble, mozilla::Cancelable, mozilla::Composed, bool*) /builds/worker/checkouts/gecko/dom/base/nsContentUtils.cpp:4615:10
#40 0x7f43d6dbd31d in mozilla::dom::Document::DispatchContentLoadedEvents() /builds/worker/checkouts/gecko/dom/base/Document.cpp:8031:3
#41 0x7f43d6e63489 in operator()<> /builds/worker/workspace/obj-build/dist/include/nsThreadUtils.h:1164:18
#42 0x7f43d6e63489 in __invoke_impl<void, (lambda at /builds/worker/workspace/obj-build/dist/include/nsThreadUtils.h:1163:9)> /builds/worker/fetches/sysroot-x86_64-linux-gnu/usr/lib/gcc/x86_64-linux-gnu/7/../../../../include/c++/7/bits/invoke.h:60:14
#43 0x7f43d6e63489 in __invoke<(lambda at /builds/worker/workspace/obj-build/dist/include/nsThreadUtils.h:1163:9)> /builds/worker/fetches/sysroot-x86_64-linux-gnu/usr/lib/gcc/x86_64-linux-gnu/7/../../../../include/c++/7/bits/invoke.h:95:14
#44 0x7f43d6e63489 in __apply_impl<(lambda at /builds/worker/workspace/obj-build/dist/include/nsThreadUtils.h:1163:9), std::tuple<> &> /builds/worker/fetches/sysroot-x86_64-linux-gnu/usr/lib/gcc/x86_64-linux-gnu/7/../../../../include/c++/7/tuple:1662:14
#45 0x7f43d6e63489 in apply<(lambda at /builds/worker/workspace/obj-build/dist/include/nsThreadUtils.h:1163:9), std::tuple<> &> /builds/worker/fetches/sysroot-x86_64-linux-gnu/usr/lib/gcc/x86_64-linux-gnu/7/../../../../include/c++/7/tuple:1671:14
#46 0x7f43d6e63489 in apply<mozilla::dom::Document, void (mozilla::dom::Document::*)()> /builds/worker/workspace/obj-build/dist/include/nsThreadUtils.h:1162:12
#47 0x7f43d6e63489 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:1213:13
#48 0x7f43d52b12e2 in mozilla::SchedulerGroup::Runnable::Run() /builds/worker/checkouts/gecko/xpcom/threads/SchedulerGroup.cpp:114:20
#49 0x7f43d52bbda7 in mozilla::RunnableTask::Run() /builds/worker/checkouts/gecko/xpcom/threads/TaskController.cpp:555:16
#50 0x7f43d52b6faa in mozilla::TaskController::DoExecuteNextTaskOnlyMainThreadInternal(mozilla::detail::BaseAutoLock<mozilla::Mutex&> const&) /builds/worker/checkouts/gecko/xpcom/threads/TaskController.cpp:879:26
#51 0x7f43d52b5a87 in mozilla::TaskController::ExecuteNextTaskOnlyMainThreadInternal(mozilla::detail::BaseAutoLock<mozilla::Mutex&> const&) /builds/worker/checkouts/gecko/xpcom/threads/TaskController.cpp:702:15
#52 0x7f43d52b5e05 in mozilla::TaskController::ProcessPendingMTTask(bool) /builds/worker/checkouts/gecko/xpcom/threads/TaskController.cpp:491:36
#53 0x7f43d52bf356 in operator() /builds/worker/checkouts/gecko/xpcom/threads/TaskController.cpp:218:37
#54 0x7f43d52bf356 in mozilla::detail::RunnableFunction<mozilla::TaskController::TaskController()::$_0>::Run() /builds/worker/checkouts/gecko/xpcom/threads/nsThreadUtils.h:548:5
#55 0x7f43d52d56fa in nsThread::ProcessNextEvent(bool, bool*) /builds/worker/checkouts/gecko/xpcom/threads/nsThread.cpp:1239:16
#56 0x7f43d52dbd1d in NS_ProcessNextEvent(nsIThread*, bool) /builds/worker/checkouts/gecko/xpcom/threads/nsThreadUtils.cpp:479:10
#57 0x7f43d5f1e215 in mozilla::ipc::MessagePump::Run(base::MessagePump::Delegate*) /builds/worker/checkouts/gecko/ipc/glue/MessagePump.cpp:85:21
#58 0x7f43d5e3fdd1 in RunHandler /builds/worker/checkouts/gecko/ipc/chromium/src/base/message_loop.cc:362:3
#59 0x7f43d5e3fdd1 in MessageLoop::Run() /builds/worker/checkouts/gecko/ipc/chromium/src/base/message_loop.cc:344:3
#60 0x7f43da582e08 in nsBaseAppShell::Run() /builds/worker/checkouts/gecko/widget/nsBaseAppShell.cpp:148:27
#61 0x7f43dc8133db in XRE_RunAppShell() /builds/worker/checkouts/gecko/toolkit/xre/nsEmbedFunctions.cpp:738:20
#62 0x7f43d5f1f0c6 in mozilla::ipc::MessagePumpForChildProcess::Run(base::MessagePump::Delegate*) /builds/worker/checkouts/gecko/ipc/glue/MessagePump.cpp:235:9
#63 0x7f43d5e3fdd1 in RunHandler /builds/worker/checkouts/gecko/ipc/chromium/src/base/message_loop.cc:362:3
#64 0x7f43d5e3fdd1 in MessageLoop::Run() /builds/worker/checkouts/gecko/ipc/chromium/src/base/message_loop.cc:344:3
#65 0x7f43dc812ca2 in XRE_InitChildProcess(int, char**, XREChildData const*) /builds/worker/checkouts/gecko/toolkit/xre/nsEmbedFunctions.cpp:673:34
#66 0x556bb0c567a6 in content_process_main /builds/worker/checkouts/gecko/browser/app/../../ipc/contentproc/plugin-container.cpp:57:28
#67 0x556bb0c567a6 in main /builds/worker/checkouts/gecko/browser/app/nsBrowserApp.cpp:375:18
#68 0x7f43e8a29d8f in __libc_start_call_main csu/../sysdeps/nptl/libc_start_call_main.h:58:16
#69 0x7f43e8a29e3f in __libc_start_main csu/../csu/libc-start.c:392:3
#70 0x556bb0c2da28 in _start (/home/user/workspace/browsers/m-c-20230510213701-fuzzing-debug/firefox-bin+0x58a28) (BuildId: 62943f22fb28e316d9baf2fbed5d93553833dc4a)

Comment 1

[Tyson Smith [:tsmith]]

Attachment: prefs.js

prefs.js file for bugmon

Comment 2

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

Set release status flags based on info from the regressing bug 1455416

Comment 3

[Bugmon [:jkratzer for issues]]

Verified bug as reproducible on mozilla-central 20230511040639-da13ef752e22.
The bug appears to have been introduced in the following build range:

Start: a7a328c86d5bab5e73de7abf526304c96addccc3 (20230508201033)
End: cc7b419c4bbea93ee3364cf6749a0d6dcbb0a991 (20230508213519)
Pushlog: https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=a7a328c86d5bab5e73de7abf526304c96addccc3&tochange=cc7b419c4bbea93ee3364cf6749a0d6dcbb0a991

Comment 4

[Donal Meehan [:dmeehan]]

Setting 115 to Fixed as the regressor Bug 1455416 was backed out of central

Comment 5

[James Teh [:Jamie]]

Fixed by backout.

Comment 6

[Bugmon [:jkratzer for issues]]

Verified bug as fixed on rev mozilla-central 20230519041011-d97636946466.