1869932 - Crash in [@ mozilla::ipc::FatalError | mozilla::ipc::IProtocol::HandleFatalError | mozilla::ipc::IProtocol::FatalError | mozilla::dom::PWebrtcGlobalParent::OnMessageReceived]

Status: RESOLVED WORKSFORME

(Core :: WebRTC, defect)

Description

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

Crash report: https://crash-stats.mozilla.org/report/index/92169722-08f9-40e0-adbd-449fc0231212

MOZ_CRASH Reason: MOZ_CRASH(IPC FatalError in the parent process!)

Top 10 frames of crashing thread:

0  libxul.so  mozilla::ipc::FatalError  ipc/glue/ProtocolUtils.cpp:209
1  libxul.so  mozilla::ipc::IProtocol::HandleFatalError  ipc/glue/ProtocolUtils.cpp:440
2  libxul.so  mozilla::ipc::IProtocol::FatalError  ipc/glue/ProtocolUtils.cpp:431
2  libxul.so  mozilla::dom::PWebrtcGlobalParent::OnMessageReceived  ipc/ipdl/PWebrtcGlobalParent.cpp:487
3  libxul.so  mozilla::dom::PContentParent::OnMessageReceived  ipc/ipdl/PContentParent.cpp:6764
4  libxul.so  mozilla::ipc::MessageChannel::DispatchAsyncMessage  ipc/glue/MessageChannel.cpp:1813
4  libxul.so  mozilla::ipc::MessageChannel::DispatchMessage  ipc/glue/MessageChannel.cpp:1732
4  libxul.so  mozilla::ipc::MessageChannel::RunMessage  ipc/glue/MessageChannel.cpp:1525
4  libxul.so  mozilla::ipc::MessageChannel::MessageTask::Run  ipc/glue/MessageChannel.cpp:1623
5  libxul.so  mozilla::RunnableTask::Run  xpcom/threads/TaskController.cpp:549

By querying Nightly crashes reported within the last 2 months, here are some insights about the signature:

• First crash report: 2023-10-18
• Process type: Parent
• Is startup crash: No
• Has user comments: No
• Is null crash: Yes - 2 out of 3 crashes happened on null or near null memory address

Comment 1

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

The severity field is not set for this bug.
:mjf, could you have a look please?

For more information, please visit BugBot documentation.

Comment 2

[Jan-Ivar Bruaroey [:jib] (needinfo? me)]

There's no actual webrtc tree code in this stack. Just generated code:

           auto maybe__stats = IPC::ReadParam<nsTArray<RTCStatsReportInternal>>((&(reader__)));
           if (!maybe__stats) {
               FatalError("Error deserializing 'RTCStatsReportInternal[]'");

WebRTC Stats reports happen at a regular cadence whenever WebRTC is in use, so they might just be victims of OOM.

Comment 3

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

Closing because no crashes reported for 12 weeks.