1613754 - webgl.out-of-process not listed in crash report userPrefs, but crash is only reachable with a modified pref

Status: NEW

(Core :: Preferences: Backend, defect, P3)

Description

[Kelsey Gilbert [:jgilbert]]

I think this is benign, but a problem with the crash reporter pref list, perhaps not being fully up-to-date when a user modifies a pref live, (possibly quickly) leading to a crash.

For example, bug 1613397 has this crash report:
https://crash-stats.mozilla.org/report/index/cbabaab4-95d7-404a-a5d4-99f620200205

But we should be unconditionally taking this branch, since we don't see webgl.out-of-process modified (default: false) in the crash report:
https://hg.mozilla.org/mozilla-central/annotate/b95921676bb48bf84d429f0a4ab9c53a1bdd7933/dom/canvas/ClientWebGLContext.cpp#l705
This crash shows we hit further down past that branch's early return.

Comment 1

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

The priority flag is not set for this bug.
:njn, could you have a look please?

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