1457414 - Crash in nsStubMutationObserver::AttributeWillChange

Status: RESOLVED WORKSFORME

(Core :: XUL, defect)

Description

[Calixte Denizet (:calixte)]

This bug was filed from the Socorro interface and is
report bp-3568e654-c15d-4795-8842-492be0180427.
=============================================================

Top 10 frames of crashing thread:

0 XUL nsStubMutationObserver::AttributeWillChange dom/base/nsStubMutationObserver.cpp:17
1 XUL nsNodeUtils::AttributeWillChange dom/base/nsNodeUtils.cpp:157
2 XUL mozilla::dom::Element::SetAttr dom/base/Element.cpp:2517
3 XUL nsScrollbarFrame::UpdateChildrenAttributeValue dom/base/Element.h:839
4 XUL nsScrollbarFrame::AttributeChanged layout/xul/nsScrollbarFrame.cpp:99
5 XUL mozilla::RestyleManager::AttributeChanged layout/base/RestyleManager.cpp:3324
6 XUL mozilla::PresShell::AttributeChanged layout/base/PresShell.cpp:4458
7 XUL nsNodeUtils::AttributeChanged dom/base/nsNodeUtils.cpp:170
8 XUL mozilla::dom::Element::SetAttrAndNotify dom/base/Element.cpp:2711
9 XUL mozilla::dom::Element::SetAttr dom/base/Element.cpp:2537

=============================================================

There is 1 crash in nightly 61 with buildid 20180426220144. In analyzing the backtrace, the regression may have been introduced by patch [1] to fix bug 1431246.

[1] https://hg.mozilla.org/mozilla-central/rev?node=d3b5dfca6a90

Comment 1

[Tim Guan-tin Chien [:timdream] (please needinfo)]

Without an STR this is not really actionable. I would like to wait and see if this shows up more and hopefully find a test case to make this actionable.

Comment 2

[Ryan VanderMeulen [:RyanVM]]

There hasn't been another report since this was filed. Resolving as WFM.