1724322 - Crash in [@ mozilla::webgl::LinkedProgramInfo::GetDrawFetchLimits] at MOZ_CRASH(pacify gcc6 warning)

Status: RESOLVED WORKSFORME

(Core :: Graphics: CanvasWebGL, defect)

Description

[Andrew McCreight [:mccr8]]

Maybe Fission related. (DOMFissionEnabled=1)

Crash report: https://crash-stats.mozilla.org/report/index/19359604-01ba-462f-abf9-5116d0210804

MOZ_CRASH Reason: MOZ_CRASH(pacify gcc6 warning)

Top 10 frames of crashing thread:

0 xul.dll mozilla::webgl::LinkedProgramInfo::GetDrawFetchLimits const dom/canvas/WebGLProgram.cpp:676
1 xul.dll mozilla::ValidateDraw dom/canvas/WebGLContextDraw.cpp:479
2 xul.dll mozilla::WebGLContext::DrawArraysInstanced dom/canvas/WebGLContextDraw.cpp:646
3 xul.dll mozilla::MethodDispatcher<WebGLMethodDispatcher, 100, void  const dom/canvas/WebGLCommandQueue.h:248
4 xul.dll mozilla::dom::WebGLParent::RecvDispatchCommands dom/canvas/WebGLParent.cpp:61
5 xul.dll mozilla::dom::PWebGLParent::OnMessageReceived ipc/ipdl/PWebGLParent.cpp:201
6 xul.dll mozilla::layers::PCompositorManagerParent::OnMessageReceived ipc/ipdl/PCompositorManagerParent.cpp:200
7 xul.dll mozilla::ipc::MessageChannel::DispatchMessage ipc/glue/MessageChannel.cpp:1978
8 xul.dll mozilla::ipc::MessageChannel::MessageTask::Run ipc/glue/MessageChannel.cpp:1857
9 xul.dll nsThread::ProcessNextEvent xpcom/threads/nsThread.cpp:1142

Not a ton of installations. It looks like this function is hitting the fallthrough case in a webgl::ToString() method.

Comment 1

[Andrew McCreight [:mccr8]]

It looks like this isn't a new regression. I found an instance of this crash in ESR78: bp-7e3a70e0-be0f-432d-a2f6-456550210629

Comment 2

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

Closing because no crashes reported for 12 weeks.