1693054 - Assertion failure: mRawPtr != nullptr (You can't dereference a NULL RefPtr with operator->().), at /builds/worker/workspace/obj-build/dist/include/mozilla/RefPtr.h:315

Status: RESOLVED DUPLICATE of bug 1693045

(Core :: Audio/Video: Recording, defect)

Description

[Jason Kratzer [:jkratzer]]

Attachment: testcase.zip

Testcase found while fuzzing mozilla-central rev fc74eb2c7b84 (built with --enable-debug).

Assertion failure: mRawPtr != nullptr (You can't dereference a NULL RefPtr with operator->().), at /builds/worker/workspace/obj-build/dist/include/mozilla/RefPtr.h:315

    #0 0x7f1bb10e1d33 in mozilla::dom::MediaRecorder::Session::DoSessionEndTask(nsresult) /builds/worker/checkouts/gecko/dom/media/MediaRecorder.cpp
    #1 0x7f1bb10b9d98 in mozilla::dom::MediaRecorder::Session::Start(mozilla::BaseTimeDuration<mozilla::TimeDurationValueCalculator>) /builds/worker/checkouts/gecko/dom/media/MediaRecorder.cpp:681:9
    #2 0x7f1bb10b7815 in mozilla::dom::MediaRecorder::Start(mozilla::dom::Optional<unsigned int> const&, mozilla::ErrorResult&) /builds/worker/checkouts/gecko/dom/media/MediaRecorder.cpp:1349:28
    #3 0x7f1bafb3164e in mozilla::dom::MediaRecorder_Binding::start(JSContext*, JS::Handle<JSObject*>, void*, JSJitMethodCallArgs const&) /builds/worker/workspace/obj-build/dom/bindings/MediaRecorderBinding.cpp:922:24
    #4 0x7f1bb099c43a 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:3233:13
    #5 0x7f1bb3a3fb61 in CallJSNative(JSContext*, bool (*)(JSContext*, unsigned int, JS::Value*), js::CallReason, JS::CallArgs const&) /builds/worker/checkouts/gecko/js/src/vm/Interpreter.cpp:435:13
    #6 0x7f1bb3a3f2d0 in js::InternalCallOrConstruct(JSContext*, JS::CallArgs const&, js::MaybeConstruct, js::CallReason) /builds/worker/checkouts/gecko/js/src/vm/Interpreter.cpp:520:12
    #7 0x7f1bb3a40ab3 in InternalCall(JSContext*, js::AnyInvokeArgs const&, js::CallReason) /builds/worker/checkouts/gecko/js/src/vm/Interpreter.cpp:580:10
    #8 0x7f1bb3a357a3 in CallFromStack /builds/worker/checkouts/gecko/js/src/vm/Interpreter.cpp:584:10
    #9 0x7f1bb3a357a3 in Interpret(JSContext*, js::RunState&) /builds/worker/checkouts/gecko/js/src/vm/Interpreter.cpp:3243:16
    #10 0x7f1bb3a2cd88 in js::RunScript(JSContext*, js::RunState&) /builds/worker/checkouts/gecko/js/src/vm/Interpreter.cpp:405:13
    #11 0x7f1bb3a3f2f1 in js::InternalCallOrConstruct(JSContext*, JS::CallArgs const&, js::MaybeConstruct, js::CallReason) /builds/worker/checkouts/gecko/js/src/vm/Interpreter.cpp:552:13
    #12 0x7f1bb3a40ab3 in InternalCall(JSContext*, js::AnyInvokeArgs const&, js::CallReason) /builds/worker/checkouts/gecko/js/src/vm/Interpreter.cpp:580:10
    #13 0x7f1bb3a40cef 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:597:8
    #14 0x7f1bb3fc830b 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/jsapi.cpp:2861:10
    #15 0x7f1bb06be3ac 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:58:8
    #16 0x7f1bb0d400f6 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
    #17 0x7f1bb0d3fe3e in mozilla::EventListenerManager::HandleEventSubType(mozilla::EventListenerManager::Listener*, mozilla::dom::Event*, mozilla::dom::EventTarget*) /builds/worker/checkouts/gecko/dom/events/EventListenerManager.cpp:1101:43
    #18 0x7f1bb0d40ac0 in mozilla::EventListenerManager::HandleEventInternal(nsPresContext*, mozilla::WidgetEvent*, mozilla::dom::Event**, mozilla::dom::EventTarget*, nsEventStatus*, bool) /builds/worker/checkouts/gecko/dom/events/EventListenerManager.cpp:1298:17
    #19 0x7f1bb0d35df5 in HandleEvent /builds/worker/workspace/obj-build/dist/include/mozilla/EventListenerManager.h:390:5
    #20 0x7f1bb0d35df5 in mozilla::EventTargetChainItem::HandleEvent(mozilla::EventChainPostVisitor&, mozilla::ELMCreationDetector&) /builds/worker/checkouts/gecko/dom/events/EventDispatcher.cpp:354:17
    #21 0x7f1bb0d353a3 in mozilla::EventTargetChainItem::HandleEventTargetChain(nsTArray<mozilla::EventTargetChainItem>&, mozilla::EventChainPostVisitor&, mozilla::EventDispatchingCallback*, mozilla::ELMCreationDetector&) /builds/worker/checkouts/gecko/dom/events/EventDispatcher.cpp:556:16
    #22 0x7f1bb0d37f55 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:1099:11
    #23 0x7f1bb2418cad in nsDocumentViewer::LoadComplete(nsresult) /builds/worker/checkouts/gecko/layout/base/nsDocumentViewer.cpp:1103:7
    #24 0x7f1bb33de1e0 in nsDocShell::EndPageLoad(nsIWebProgress*, nsIChannel*, nsresult) /builds/worker/checkouts/gecko/docshell/base/nsDocShell.cpp:6520:20
    #25 0x7f1bb33ddb92 in nsDocShell::OnStateChange(nsIWebProgress*, nsIRequest*, unsigned int, nsresult) /builds/worker/checkouts/gecko/docshell/base/nsDocShell.cpp:5876:7
    #26 0x7f1bb33deb1f in non-virtual thunk to nsDocShell::OnStateChange(nsIWebProgress*, nsIRequest*, unsigned int, nsresult) /builds/worker/checkouts/gecko/docshell/base/nsDocShell.cpp
    #27 0x7f1baec2f96c in nsDocLoader::DoFireOnStateChange(nsIWebProgress*, nsIRequest*, int&, nsresult) /builds/worker/checkouts/gecko/uriloader/base/nsDocLoader.cpp:1332:3
    #28 0x7f1baec2ef1a in nsDocLoader::doStopDocumentLoad(nsIRequest*, nsresult) /builds/worker/checkouts/gecko/uriloader/base/nsDocLoader.cpp:938:14
    #29 0x7f1baec2d457 in nsDocLoader::DocLoaderIsEmpty(bool, mozilla::Maybe<nsresult> const&) /builds/worker/checkouts/gecko/uriloader/base/nsDocLoader.cpp:757:9
    #30 0x7f1baec2e39d in nsDocLoader::OnStopRequest(nsIRequest*, nsresult) /builds/worker/checkouts/gecko/uriloader/base/nsDocLoader.cpp:640:5
    #31 0x7f1baec2eb3c in non-virtual thunk to nsDocLoader::OnStopRequest(nsIRequest*, nsresult) /builds/worker/checkouts/gecko/uriloader/base/nsDocLoader.cpp
    #32 0x7f1badb6af86 in mozilla::net::nsLoadGroup::NotifyRemovalObservers(nsIRequest*, nsresult) /builds/worker/checkouts/gecko/netwerk/base/nsLoadGroup.cpp:616:22
    #33 0x7f1badb6c493 in mozilla::net::nsLoadGroup::RemoveRequest(nsIRequest*, nsISupports*, nsresult) /builds/worker/checkouts/gecko/netwerk/base/nsLoadGroup.cpp:523:10
    #34 0x7f1baf5f3ff1 in mozilla::dom::Document::DoUnblockOnload() /builds/worker/checkouts/gecko/dom/base/Document.cpp:11065:18
    #35 0x7f1baf647821 in mozilla::dom::nsUnblockOnloadEvent::Run() /builds/worker/checkouts/gecko/dom/base/Document.cpp:11019:11
    #36 0x7f1bad9c0d92 in mozilla::SchedulerGroup::Runnable::Run() /builds/worker/checkouts/gecko/xpcom/threads/SchedulerGroup.cpp:146:20
    #37 0x7f1bad9c730f in mozilla::RunnableTask::Run() /builds/worker/checkouts/gecko/xpcom/threads/TaskController.cpp:472:16
    #38 0x7f1bad9c5886 in mozilla::TaskController::DoExecuteNextTaskOnlyMainThreadInternal(mozilla::detail::BaseAutoLock<mozilla::Mutex&> const&) /builds/worker/checkouts/gecko/xpcom/threads/TaskController.cpp:753:26
    #39 0x7f1bad9c46e4 in mozilla::TaskController::ExecuteNextTaskOnlyMainThreadInternal(mozilla::detail::BaseAutoLock<mozilla::Mutex&> const&) /builds/worker/checkouts/gecko/xpcom/threads/TaskController.cpp:611:15
    #40 0x7f1bad9c4897 in mozilla::TaskController::ProcessPendingMTTask(bool) /builds/worker/checkouts/gecko/xpcom/threads/TaskController.cpp:395:36
    #41 0x7f1bad9cb126 in operator() /builds/worker/checkouts/gecko/xpcom/threads/TaskController.cpp:133:37
    #42 0x7f1bad9cb126 in mozilla::detail::RunnableFunction<mozilla::TaskController::InitializeInternal()::$_3>::Run() /builds/worker/workspace/obj-build/dist/include/nsThreadUtils.h:534:5
    #43 0x7f1bad9dc617 in nsThread::ProcessNextEvent(bool, bool*) /builds/worker/checkouts/gecko/xpcom/threads/nsThread.cpp:1158:16
    #44 0x7f1bad9e2a6a in NS_ProcessNextEvent(nsIThread*, bool) /builds/worker/checkouts/gecko/xpcom/threads/nsThreadUtils.cpp:548:10
    #45 0x7f1bae2f8f46 in mozilla::ipc::MessagePump::Run(base::MessagePump::Delegate*) /builds/worker/checkouts/gecko/ipc/glue/MessagePump.cpp:87:21
    #46 0x7f1bae264563 in MessageLoop::RunInternal() /builds/worker/checkouts/gecko/ipc/chromium/src/base/message_loop.cc:335:10
    #47 0x7f1bae26447d in RunHandler /builds/worker/checkouts/gecko/ipc/chromium/src/base/message_loop.cc:328:3
    #48 0x7f1bae26447d in MessageLoop::Run() /builds/worker/checkouts/gecko/ipc/chromium/src/base/message_loop.cc:310:3
    #49 0x7f1bb20c3858 in nsBaseAppShell::Run() /builds/worker/checkouts/gecko/widget/nsBaseAppShell.cpp:137:27
    #50 0x7f1bb39045d3 in XRE_RunAppShell() /builds/worker/checkouts/gecko/toolkit/xre/nsEmbedFunctions.cpp:902:20
    #51 0x7f1bae2f9e2c in mozilla::ipc::MessagePumpForChildProcess::Run(base::MessagePump::Delegate*) /builds/worker/checkouts/gecko/ipc/glue/MessagePump.cpp:237:9
    #52 0x7f1bae264563 in MessageLoop::RunInternal() /builds/worker/checkouts/gecko/ipc/chromium/src/base/message_loop.cc:335:10
    #53 0x7f1bae26447d in RunHandler /builds/worker/checkouts/gecko/ipc/chromium/src/base/message_loop.cc:328:3
    #54 0x7f1bae26447d in MessageLoop::Run() /builds/worker/checkouts/gecko/ipc/chromium/src/base/message_loop.cc:310:3
    #55 0x7f1bb39041a8 in XRE_InitChildProcess(int, char**, XREChildData const*) /builds/worker/checkouts/gecko/toolkit/xre/nsEmbedFunctions.cpp:733:34
    #56 0x55e433cf4f86 in content_process_main /builds/worker/checkouts/gecko/browser/app/../../ipc/contentproc/plugin-container.cpp:57:28
    #57 0x55e433cf4f86 in main /builds/worker/checkouts/gecko/browser/app/nsBrowserApp.cpp:306:18
    #58 0x7f1bc30120b2 in __libc_start_main /build/glibc-eX1tMB/glibc-2.31/csu/../csu/libc-start.c:308:16

Comment 1

[Bugmon [:jkratzer for issues]]

Bugmon Analysis:
Verified bug as reproducible on mozilla-central 20210216215129-c1db635de2e1.
The bug appears to have been introduced in the following build range:

Start: 1c9c0c0c5fd05a1cf1eb611fbfa90de4953d4273 (20210211130440)
End: af570005d5939fe037c87a285856597ba502a95b (20210211134312)
Pushlog: https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=1c9c0c0c5fd05a1cf1eb611fbfa90de4953d4273&tochange=af570005d5939fe037c87a285856597ba502a95b

Comment 2

[Matthew Gregan [:kinetik]]

Andreas, this looks related to bug 1464268 or bug 1666487.

Comment 3

[Andreas Pehrson [:pehrsons]]

This smells like the debug version of bug 1693045.

Comment 5

[Jason Kratzer [:jkratzer]]

Bugmon Analysis
No valid actions for resolution (DUPLICATE)
Removing bugmon keyword as no further action possible. Please review the bug and re-add the keyword for further analysis.