Bug 267715 – REGRESSION(273101@main?): [ wk2 debug ] imported/w3c/web-platform-tests/css/css-flexbox/anonymous-flex-item-006.html is flakily crashing.

• Component: Layout and Rendering
• Status: RESOLVED FIXED

[Ben Schwartz]

imported/w3c/web-platform-tests/css/css-flexbox/anonymous-flex-item-006.html

This test is flakily crashing on wk2 debug.

HISTORY:

https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fcss%2Fcss-flexbox%2Fanonymous-flex-item-006.html&flavor=wk2&style=debug

CRASH LOG:

ASSERTION FAILED: ptr
/Volumes/Data/worker/Apple-Sonoma-Debug-Build/build/WebKitBuild/Debug/usr/local/include/wtf/WeakRef.h(80) : T *WTF::WeakRef<const WebCore::RenderBox, WTF::SingleThreadWeakPtrImpl>::ptr() const [T = const WebCore::RenderBox, WeakPtrImpl = WTF::SingleThreadWeakPtrImpl]
1   0x122406489 WTFCrash
2   0x170fe814b WTFCrashWithInfo(int, char const*, char const*, int)
3   0x1763dfa92 WTF::WeakRef<WebCore::RenderBox const, WTF::SingleThreadWeakPtrImpl>::ptr() const
4   0x1763dfa15 WTF::GetPtrHelper<WTF::WeakRef<WebCore::RenderBox const, WTF::SingleThreadWeakPtrImpl>>::getPtr(WTF::WeakRef<WebCore::RenderBox const, WTF::SingleThreadWeakPtrImpl> const&)
5   0x1763df9f5 WTF::GetPtrHelper<WTF::WeakRef<WebCore::RenderBox const, WTF::SingleThreadWeakPtrImpl>>::PtrType WTF::getPtr<WTF::WeakRef<WebCore::RenderBox const, WTF::SingleThreadWeakPtrImpl>>(WTF::WeakRef<WebCore::RenderBox const, WTF::SingleThreadWeakPtrImpl> const&)
...

CRASH LOG LINK:

https://build.webkit.org/results/Apple-Sonoma-Debug-WK1-Tests/273103@main%20(604)/imported/w3c/web-platform-tests/css/css-flexbox/anonymous-flex-item-006-crash-log.txt

REPRODUCIBILITY:

I was able to reproduce this issue on macOS Sonoma (14.2, 23C71/arm64) ToT using the following command:

run-webkit-tests --debug --clobber-old-results -v --child-processes 10 --iterations 250 -f imported/w3c/web-platform-tests/css/css-flexbox/anonymous-flex-item-006.html --exit-after-n-failures 1

REGRESSION:

This test appears to have regressed between 273097@main and 273104@main. Contextual information indicates that the regression point may be 273101@main, given that changes at that point appear to be directly related to this issue.

[Radar WebKit Bug Importer]

<rdar://problem/121206812>

[Ben Schwartz]

Created attachment 469445 [details]
full-crash-log.txt

Adding full crash log to bug for future reference.

[EWS]

Test gardening commit 273189@main (f7d8a27181cc): <https://commits.webkit.org/273189@main>

Reviewed commits have been landed. Closing PR #22929 and removing active labels.

[Chris Dumez]

Pull request: https://github.com/WebKit/WebKit/pull/22934

[Tim Nguyen (:ntim)]

*** Bug 267638 has been marked as a duplicate of this bug. ***

[EWS]

Committed 273192@main (43e9932d0120): <https://commits.webkit.org/273192@main>

Reviewed commits have been landed. Closing PR #22934 and removing active labels.