Bug 306890

Summary:

REGRESSION (305692@main): [WK1] ASSERTION FAILED: Constant crash under PlatformCALayerCocoa::shadowPath() on multiple tests

Product:

WebKit

Reporter:

Diego De La Toba <d_delatoba>

Component:

Layout and Rendering

Assignee:

Abrar Rahman Protyasha <a_protyasha>

Status:

RESOLVED FIXED

Severity:

Normal

CC:

a_protyasha, bfulgham, simon.fraser, thorton, webkit-bot-watchers-bugzilla, webkit-bug-importer, zalan

Priority:

Keywords:

InRadar

Version:

WebKit Nightly Build

Hardware:

Unspecified

OS:

Unspecified

Attachments:

Description	Flags
Crash log	none

Diego De La Toba

Reported 2026-02-03 11:13:57 PST

css3/filters/backdrop/backdrop-filter-with-reflection.html is a constant crash on MacOS WK1 Sequoia-TahoeA. HISTORY: https://results.webkit.org/?suite=layout-tests&suite=layout-tests&suite=layout-tests&test=compositing%2Freflections%2Fdirect-image-object-fit-reflected.html&test=css3%2Ffilters%2Fbackdrop%2Fbackdrop-filter-with-reflection.html&test=http%2Ftests%2Ffetch%2Fkeepalive-fetch-2.html BUILD URL: https://build.webkit.org/#/builders/1709/builds/1234 REPRODUCTION: Reproduced on macOS Tahoe with the following: run-webkit-tests --release -1 --force --no-retry --iterations 100 css3/filters/backdrop/backdrop-filter-with-reflection.html I am going to mark expectations as pass fail while this pends investigation.

Attachments
Crash log (28.41 KB, text/plain) 2026-02-03 11:59 PST, Abrar Rahman Protyasha	no flags	Details
View All Add attachment proposed patch, testcase, etc.

Radar WebKit Bug Importer

Comment 1 2026-02-03 11:14:04 PST

<rdar://problem/169548155>

Abrar Rahman Protyasha

Comment 2 2026-02-03 11:59:03 PST

Created attachment 478237 [details] Crash log I've extricated the crash log from the failing test run.

Abrar Rahman Protyasha

Comment 3 2026-02-03 11:59:43 PST

Indeed, crashing under `WebCore::PlatformCALayerCocoa::shadowPath()` suggests this is a direct fallout from 305692@main.

Abrar Rahman Protyasha

Comment 4 2026-02-03 11:59:56 PST

This is also the same crash seen in https://bugs.webkit.org/show_bug.cgi?id=306894.

Abrar Rahman Protyasha

Comment 5 2026-02-03 12:01:12 PST

*** Bug 306894 has been marked as a duplicate of this bug. ***

Abrar Rahman Protyasha

Comment 6 2026-02-03 12:03:03 PST

The following tests are affected: css3/filters/backdrop/backdrop-filter-with-reflection.html compositing/reflections/direct-image-object-fit-reflected.html

Abrar Rahman Protyasha

Comment 7 2026-02-03 12:09:55 PST

``` ASSERTION FAILED: m_platformPath /Source/WebCore/platform/graphics/cg/PathCG.cpp(372) : WebCore::PathCG::PathCG(RetainPtr<CGMutablePathRef> &&) ```

Abrar Rahman Protyasha

Comment 8 2026-02-03 13:23:26 PST

Pull request: https://github.com/WebKit/WebKit/pull/57806

EWS

Comment 9 2026-02-03 17:58:53 PST

Committed 306747@main (c782e71fab89): <https://commits.webkit.org/306747@main> Reviewed commits have been landed. Closing PR #57806 and removing active labels.

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