1626031 - Assertion failure: atPreviousContent.IsSet(), at /builds/worker/checkouts/gecko/editor/libeditor/HTMLEditSubActionHandler.cpp:3877

Status: NEW

(Core :: DOM: Editor, defect, P2)

Description

[Jason Kratzer [:jkratzer]]

Attachment: testcase.html

Testcase found while fuzzing mozilla-central rev ef8f91e97c99 (built with --enable-debug).

Assertion failure: atPreviousContent.IsSet(), at /builds/worker/checkouts/gecko/editor/libeditor/HTMLEditSubActionHandler.cpp:3877

rax = 0x0000562b5ceb9380   rdx = 0x0000000000000000
rcx = 0x00007f7112b738c5   rbx = 0x00007fff8e14d120
rsi = 0x00007f711e5c18b0   rdi = 0x00007f711e5c0680
rbp = 0x00007fff8e14d190   rsp = 0x00007fff8e14d020
r8 = 0x00007f711e5c18b0    r9 = 0x00007f711f727780
r10 = 0x0000000000000000   r11 = 0x0000000000000000
r12 = 0x00007f7103a14800   r13 = 0x00007fff8e14d0e0
r14 = 0x00007fff8e14d0c0   r15 = 0x00007fff8e14d100
rip = 0x00007f710ee15c3d
OS|Linux|0.0.0 Linux 5.3.0-28-generic #30~18.04.1-Ubuntu SMP Fri Jan 17 06:14:09 UTC 2020 x86_64
CPU|amd64|family 6 model 94 stepping 3|8
GPU|||
Crash|SIGSEGV|0x0|0
0|0|libxul.so|mozilla::HTMLEditor::TryToJoinBlocksWithTransaction(nsIContent&, nsIContent&)|hg:hg.mozilla.org/mozilla-central:editor/libeditor/HTMLEditSubActionHandler.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|3679|0x35
0|1|libxul.so|mozilla::HTMLEditor::HandleDeleteCollapsedSelectionAtCurrentBlockBoundary(short, mozilla::dom::Element&, mozilla::EditorDOMPointBase<nsCOMPtr<nsINode>, nsCOMPtr<nsIContent> > const&)|hg:hg.mozilla.org/mozilla-central:editor/libeditor/HTMLEditSubActionHandler.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|3107|0x12
0|2|libxul.so|mozilla::HTMLEditor::HandleDeleteAroundCollapsedSelection(short, short)|hg:hg.mozilla.org/mozilla-central:editor/libeditor/HTMLEditSubActionHandler.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|2583|0x19
0|3|libxul.so|mozilla::HTMLEditor::HandleDeleteSelectionInternal(short, short)|hg:hg.mozilla.org/mozilla-central:editor/libeditor/HTMLEditSubActionHandler.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|2488|0x16
0|4|libxul.so|mozilla::HTMLEditor::HandleDeleteSelection(short, short)|hg:hg.mozilla.org/mozilla-central:editor/libeditor/HTMLEditSubActionHandler.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|2345|0x16
0|5|libxul.so|mozilla::TextEditor::DeleteSelectionAsSubAction(short, short)|hg:hg.mozilla.org/mozilla-central:editor/libeditor/TextEditor.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|732|0x13
0|6|libxul.so|mozilla::TextEditor::DeleteSelectionAsAction(short, short, nsIPrincipal*)|hg:hg.mozilla.org/mozilla-central:editor/libeditor/TextEditor.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|703|0x12
0|7|libxul.so|mozilla::DeleteCommand::DoCommand(mozilla::Command, mozilla::TextEditor&, nsIPrincipal*) const|hg:hg.mozilla.org/mozilla-central:editor/libeditor/EditorCommands.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|618|0x19
0|8|libxul.so|mozilla::dom::Document::ExecCommand(nsTSubstring<char16_t> const&, bool, nsTSubstring<char16_t> const&, nsIPrincipal&, mozilla::ErrorResult&)|hg:hg.mozilla.org/mozilla-central:dom/base/Document.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|4850|0x19
0|9|libxul.so|mozilla::dom::Document_Binding::execCommand|s3:gecko-generated-sources:9acea2c9dde878a49dfe598539e011fa636afe7d897a20fc78eb1b2af8d2b01612f514fa02c204aa542773ef82f78510545ff85c876dfde38694960b8fb3c370/dom/bindings/DocumentBinding.cpp:|3466|0x2e
0|10|libxul.so|bool mozilla::dom::binding_detail::GenericMethod<mozilla::dom::binding_detail::NormalThisPolicy, mozilla::dom::binding_detail::ThrowExceptions>(JSContext*, unsigned int, JS::Value*)|hg:hg.mozilla.org/mozilla-central:dom/bindings/BindingUtils.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|3205|0x21
0|11|libxul.so|CallJSNative(JSContext*, bool (*)(JSContext*, unsigned int, JS::Value*), js::CallReason, JS::CallArgs const&)|hg:hg.mozilla.org/mozilla-central:js/src/vm/Interpreter.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|477|0x19
0|12|libxul.so|js::InternalCallOrConstruct(JSContext*, JS::CallArgs const&, js::MaybeConstruct, js::CallReason)|hg:hg.mozilla.org/mozilla-central:js/src/vm/Interpreter.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|569|0x12
0|13|libxul.so|InternalCall|hg:hg.mozilla.org/mozilla-central:js/src/vm/Interpreter.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|632|0x10
0|14|libxul.so|Interpret|hg:hg.mozilla.org/mozilla-central:js/src/vm/Interpreter.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|3028|0x16
0|15|libxul.so|js::RunScript(JSContext*, js::RunState&)|hg:hg.mozilla.org/mozilla-central:js/src/vm/Interpreter.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|410|0x152
0|16|libxul.so|js::InternalCallOrConstruct(JSContext*, JS::CallArgs const&, js::MaybeConstruct, js::CallReason)|hg:hg.mozilla.org/mozilla-central:js/src/vm/Interpreter.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|604|0xf
0|17|libxul.so|InternalCall|hg:hg.mozilla.org/mozilla-central:js/src/vm/Interpreter.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|632|0x10
0|18|libxul.so|js::Call(JSContext*, JS::Handle<JS::Value>, JS::Handle<JS::Value>, js::AnyInvokeArgs const&, JS::MutableHandle<JS::Value>, js::CallReason)|hg:hg.mozilla.org/mozilla-central:js/src/vm/Interpreter.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|649|0x8
0|19|libxul.so|JS::Call(JSContext*, JS::Handle<JS::Value>, JS::Handle<JS::Value>, JS::HandleValueArray const&, JS::MutableHandle<JS::Value>)|hg:hg.mozilla.org/mozilla-central:js/src/jsapi.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|2798|0x1f
0|20|libxul.so|mozilla::dom::EventListener::HandleEvent(mozilla::dom::BindingCallContext&, JS::Handle<JS::Value>, mozilla::dom::Event&, mozilla::ErrorResult&)|s3:gecko-generated-sources:193e9a85814bae146326c2a291da1e87fa580c482e06e710f97daa3a025bad456a6c4102317b56373145ae30081dfb4e18c0a2449f7be19134cdc5c142912259/dom/bindings/EventListenerBinding.cpp:|54|0x5
0|21|libxul.so|mozilla::EventListenerManager::HandleEventSubType(mozilla::EventListenerManager::Listener*, mozilla::dom::Event*, mozilla::dom::EventTarget*)|s3:gecko-generated-sources:99837b3cdc69c5eb1234f9d2b3e771dcff734d56a022bedb1d00c0cf4ee6243fb5c91397a058f2ddab63bda8ed6b581ea1232a0229033866910c7289d24cbc2d/dist/include/mozilla/dom/EventListenerBinding.h:|66|0x19
0|22|libxul.so|mozilla::EventListenerManager::HandleEventInternal(nsPresContext*, mozilla::WidgetEvent*, mozilla::dom::Event**, mozilla::dom::EventTarget*, nsEventStatus*, bool)|hg:hg.mozilla.org/mozilla-central:dom/events/EventListenerManager.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|1271|0x1c
0|23|libxul.so|mozilla::EventTargetChainItem::HandleEvent(mozilla::EventChainPostVisitor&, mozilla::ELMCreationDetector&)|hg:hg.mozilla.org/mozilla-central:dom/events/EventDispatcher.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|326|0x6b
0|24|libxul.so|mozilla::EventTargetChainItem::HandleEventTargetChain(nsTArray<mozilla::EventTargetChainItem>&, mozilla::EventChainPostVisitor&, mozilla::EventDispatchingCallback*, mozilla::ELMCreationDetector&)|hg:hg.mozilla.org/mozilla-central:dom/events/EventDispatcher.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|558|0x12
0|25|libxul.so|mozilla::EventDispatcher::Dispatch(nsISupports*, nsPresContext*, mozilla::WidgetEvent*, mozilla::dom::Event*, nsEventStatus*, mozilla::EventDispatchingCallback*, nsTArray<mozilla::dom::EventTarget*>*)|hg:hg.mozilla.org/mozilla-central:dom/events/EventDispatcher.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|1055|0x1a
0|26|libxul.so|mozilla::EventDispatcher::DispatchDOMEvent(nsISupports*, mozilla::WidgetEvent*, mozilla::dom::Event*, nsPresContext*, nsEventStatus*)|hg:hg.mozilla.org/mozilla-central:dom/events/EventDispatcher.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|1160|0x16
0|27|libxul.so|nsINode::DispatchEvent(mozilla::dom::Event&, mozilla::dom::CallerType, mozilla::ErrorResult&)|hg:hg.mozilla.org/mozilla-central:dom/base/nsINode.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|1302|0x5
0|28|libxul.so|nsContentUtils::DispatchEvent(mozilla::dom::Document*, nsISupports*, nsTSubstring<char16_t> const&, mozilla::CanBubble, mozilla::Cancelable, mozilla::Composed, mozilla::Trusted, bool*, mozilla::ChromeOnlyDispatch)|hg:hg.mozilla.org/mozilla-central:dom/base/nsContentUtils.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|4052|0x2a
0|29|libxul.so|nsContentUtils::DispatchTrustedEvent(mozilla::dom::Document*, nsISupports*, nsTSubstring<char16_t> const&, mozilla::CanBubble, mozilla::Cancelable, mozilla::Composed, bool*)|hg:hg.mozilla.org/mozilla-central:dom/base/nsContentUtils.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|4022|0x21
0|30|libxul.so|mozilla::dom::Document::DispatchContentLoadedEvents()|hg:hg.mozilla.org/mozilla-central:dom/base/Document.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|7266|0x5
0|31|libxul.so|mozilla::detail::RunnableMethodImpl<mozilla::dom::Document*, void (mozilla::dom::Document::*)(), true, (mozilla::RunnableKind)0>::Run()|hg:hg.mozilla.org/mozilla-central:xpcom/threads/nsThreadUtils.h:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|1220|0x5
0|32|libxul.so|mozilla::SchedulerGroup::Runnable::Run()|hg:hg.mozilla.org/mozilla-central:xpcom/threads/SchedulerGroup.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|282|0x14
0|33|libxul.so|nsThread::ProcessNextEvent(bool, bool*)|hg:hg.mozilla.org/mozilla-central:xpcom/threads/nsThread.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|1220|0xe
0|34|libxul.so|NS_ProcessNextEvent(nsIThread*, bool)|hg:hg.mozilla.org/mozilla-central:xpcom/threads/nsThreadUtils.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|481|0x11
0|35|libxul.so|mozilla::ipc::MessagePump::Run(base::MessagePump::Delegate*)|hg:hg.mozilla.org/mozilla-central:ipc/glue/MessagePump.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|87|0xa
0|36|libxul.so|MessageLoop::RunInternal()|hg:hg.mozilla.org/mozilla-central:ipc/chromium/src/base/message_loop.cc:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|315|0x19
0|37|libxul.so|MessageLoop::Run()|hg:hg.mozilla.org/mozilla-central:ipc/chromium/src/base/message_loop.cc:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|290|0x8
0|38|libxul.so|nsBaseAppShell::Run()|hg:hg.mozilla.org/mozilla-central:widget/nsBaseAppShell.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|137|0xd
0|39|libxul.so|XRE_RunAppShell()|hg:hg.mozilla.org/mozilla-central:toolkit/xre/nsEmbedFunctions.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|909|0x6
0|40|libxul.so|mozilla::ipc::MessagePumpForChildProcess::Run(base::MessagePump::Delegate*)|hg:hg.mozilla.org/mozilla-central:ipc/glue/MessagePump.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|237|0x5
0|41|libxul.so|MessageLoop::RunInternal()|hg:hg.mozilla.org/mozilla-central:ipc/chromium/src/base/message_loop.cc:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|315|0x19
0|42|libxul.so|MessageLoop::Run()|hg:hg.mozilla.org/mozilla-central:ipc/chromium/src/base/message_loop.cc:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|290|0x8
0|43|libxul.so|XRE_InitChildProcess(int, char**, XREChildData const*)|hg:hg.mozilla.org/mozilla-central:toolkit/xre/nsEmbedFunctions.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|740|0xc
0|44|firefox-bin|content_process_main(mozilla::Bootstrap*, int, char**)|hg:hg.mozilla.org/mozilla-central:ipc/contentproc/plugin-container.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|56|0x14
0|45|firefox-bin|main|hg:hg.mozilla.org/mozilla-central:browser/app/nsBrowserApp.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|303|0x13
0|46|libc.so.6||||0x21b97
0|47|firefox-bin|__cxa_throw_bad_array_new_length|hg:hg.mozilla.org/mozilla-central:build/unix/stdc++compat/stdc++compat.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|82|0x12
0|48|firefox-bin|_GLOBAL__sub_I_TimeStamp.cpp|hg:hg.mozilla.org/mozilla-central:mozglue/misc/TimeStamp.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|150|0x4b
0|49|||||0x7fff8e150260
0|50|ld-linux-x86-64.so.2||||0x10733
0|51|libdl.so.2||||0x202d80
0|52|libpthread.so.0||||0x219bb0
0|53|firefox-bin|_GLOBAL__sub_I_TimeStamp.cpp|hg:hg.mozilla.org/mozilla-central:mozglue/misc/TimeStamp.cpp:ef8f91e97c99d3013dbe78e24f8cb52765ca6262|150|0x4b
0|54|||||0x7fff8e150260
0|55|firefox-bin|_start|||0x29

Comment 1

[Jason Kratzer [:jkratzer]]

Bugmon Analysis:
Verified bug as reproducible on mozilla-central 20200331093527-e1672b3231e9.
Failed to bisect testcase (Start build crashes!):
> Start: ef8f91e97c99d3013dbe78e24f8cb52765ca6262 (20200330094747)
> End: e1672b3231e9e612465168f16190a1392b422517 (20200331093527)
> BuildFlags: BuildFlags(asan=False, tsan=False, debug=True, fuzzing=False, coverage=False, valgrind=False)

Comment 2

[Jason Kratzer [:jkratzer]]

Bugmon Analysis:

Comment 3

[Bugmon [:jkratzer for issues]]

Bugmon Analysis
Unable to reproduce bug 1626031 using build mozilla-central 20200812034418-08471023c834. 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.