Bug 248827

Summary:	REGRESSION (253865@main): Crashes under RenderLayerCompositor::updateScrollingNodeForViewportConstrainedRole
Product:	WebKit	Reporter:	Simon Fraser (smfr) <simon.fraser>
Component:	Compositing	Assignee:	Simon Fraser (smfr) <simon.fraser>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	simon.fraser, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified

Simon Fraser (smfr)

Reported 2022-12-06 10:28:12 PST

253865@main introduced a cluster of crashes where, under RenderLayerCompositor::updateScrollingNodeForViewportConstrainedRole(), a fixed or sticky layer would have a null viewportAnchorLayer().

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Add attachment proposed patch, testcase, etc.

Simon Fraser (smfr)

Comment 1 2022-12-06 10:28:25 PST

rdar://102619100

Simon Fraser (smfr)

Comment 2 2022-12-06 10:39:45 PST

Pull request: https://github.com/WebKit/WebKit/pull/7213

EWS

Comment 3 2022-12-06 18:31:11 PST

Committed 257455@main (df0e5116081b): <https://commits.webkit.org/257455@main> Reviewed commits have been landed. Closing PR #7213 and removing active labels.

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