Closed Bug 1509576 Opened Last year Closed Last year

Crash in mozilla::dom::XULTooltipElement::PostHandleEvent


(Toolkit :: XUL Widgets, defect, P1, critical)




Tracking Status
firefox-esr60 --- unaffected
firefox63 --- unaffected
firefox64 --- fixed
firefox65 --- fixed


(Reporter: philipp, Assigned: bdahl)



(Keywords: crash, regression)

Crash Data


(1 file)

This bug was filed from the Socorro interface and is
report bp-dec99f3f-f445-4d1d-8a9d-c745a0181123.

Top 10 frames of crashing thread:

0 xul.dll mozilla::dom::XULTooltipElement::PostHandleEvent dom/xul/XULTooltipElement.cpp:93
1 xul.dll static void mozilla::EventTargetChainItem::HandleEventTargetChain dom/events/EventDispatcher.cpp:644
2 xul.dll static void mozilla::EventTargetChainItem::HandleEventTargetChain dom/events/EventDispatcher.cpp:721
3 xul.dll mozilla::EventDispatcher::Dispatch dom/events/EventDispatcher.cpp:1156
4 xul.dll void nsXULPopupManager::FirePopupShowingEvent layout/xul/nsXULPopupManager.cpp:1458
5 xul.dll void nsXULPopupManager::ShowTooltipAtScreen layout/xul/nsXULPopupManager.cpp:847
6 xul.dll void nsXULTooltipListener::LaunchTooltip layout/xul/nsXULTooltipListener.cpp:532
7 xul.dll nsresult nsXULTooltipListener::ShowTooltip layout/xul/nsXULTooltipListener.cpp:426
8 xul.dll static void nsXULTooltipListener::sTooltipCallback layout/xul/nsXULTooltipListener.cpp:742
9 xul.dll nsTimerImpl::Fire xpcom/threads/nsTimerImpl.cpp:684


this crash signature is newly showing up in firefox 64, perhaps related to the work in bug 1461798?
Flags: needinfo?(bdahl)
Priority: -- → P1
Handle the case when there is no tooltip text provider.
Assignee: nobody → bdahl
Flags: needinfo?(bdahl)
I'm not sure I understand how the tooltip provider can be null, but maybe this is during shutdown?
Pushed by
Fix crash when showing tooltip. r=NeilDeakin
Closed: Last year
Resolution: --- → FIXED
Target Milestone: --- → mozilla65
Please nominate this for Beta approval when you get a chance.
Flags: needinfo?(bdahl)
Comment on attachment 9027994 [details]
Bug 1509576 - Fix crash when showing tooltip. r=NeilDeakin

[Beta/Release Uplift Approval Request]

Feature/Bug causing the regression: Bug 1461798

User impact if declined: Firefox can crash under unknown circumstances.

Is this code covered by automated tests?: No

Has the fix been verified in Nightly?: No

Needs manual test from QE?: No

If yes, steps to reproduce: 

List of other uplifts needed: None

Risk to taking this patch: Low

Why is the change risky/not risky? (and alternatives if risky): Simple null ptr check added.

String changes made/needed:
Flags: needinfo?(bdahl)
Attachment #9027994 - Flags: approval-mozilla-beta?
Comment on attachment 9027994 [details]
Bug 1509576 - Fix crash when showing tooltip. r=NeilDeakin

Crash fix, let's uplift for the 64 RC.
Attachment #9027994 - Flags: approval-mozilla-beta? → approval-mozilla-beta+
Flags: qe-verify-
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