1453752 - Crash in mozilla::WebGLContext::GetVRFrame

Status: RESOLVED WONTFIX

(Core :: WebVR, defect)

Description

[Marcia Knous [:marcia]]

This bug was filed from the Socorro interface and is
report bp-11d7a979-9e4a-4bb3-b814-3cf290180412.
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Seen while looking at nightly crash stats: https://bit.ly/2IPbTDO. Not many crashes on current 61, but over time we have almost 50 crashes, some while nightly was in 60/59. 

Top 10 frames of crashing thread:

0 xul.dll mozilla::WebGLContext::GetVRFrame dom/canvas/WebGLContext.cpp:2446
1 xul.dll mozilla::gfx::VRLayerChild::SubmitFrame gfx/vr/ipc/VRLayerChild.cpp:67
2 xul.dll mozilla::dom::VRDisplay::SubmitFrame dom/vr/VRDisplay.cpp:670
3 xul.dll static bool mozilla::dom::VRDisplayBinding::submitFrame dom/bindings/VRDisplayBinding.cpp:1243
4 xul.dll mozilla::dom::binding_detail::GenericMethod<mozilla::dom::binding_detail::NormalThisPolicy, mozilla::dom::binding_detail::ThrowExceptions> dom/bindings/BindingUtils.cpp:3195
5 xul.dll js::InternalCallOrConstruct js/src/vm/Interpreter.cpp:467
6 xul.dll static bool Interpret js/src/vm/Interpreter.cpp:3084
7 xul.dll js::RunScript js/src/vm/Interpreter.cpp:417
8 xul.dll js::InternalCallOrConstruct js/src/vm/Interpreter.cpp:489
9 xul.dll js::jit::InvokeFunction js/src/jit/VMFunctions.cpp:112

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Comment 1

[:kip (Kearwood Gilbert)]

I'll take this and investigate.

Comment 2

[:kip (Kearwood Gilbert)]

This appears to be caused by a WebGL context loss during VR presentation.  A patch in Bug 1462695 which has recently landed in m-c will likely correct this.  I'll keep the bug open until we can see the telemetry for this call stack drop off to confirm it.

Comment 3

[Sylvestre Ledru [:Sylvestre]]

Closing because no crashes reported for 12 weeks.