Bug 256270

Summary:

REGRESSION(262909@main): [ iOS ] TestWebKitAPI.WebKit.LockdownModeDefaultFirstUseMessage is a flaky crash

Product:

WebKit

Reporter:

Robert Jenner <jenner>

Component:

New Bugs

Assignee:

youenn fablet <youennf>

Status:

RESOLVED FIXED

Severity:

Normal

CC:

webkit-bot-watchers-bugzilla, webkit-bug-importer, youennf

Priority:

Keywords:

InRadar

Version:

WebKit Nightly Build

Hardware:

Unspecified

OS:

Unspecified

See Also:

https://bugs.webkit.org/show_bug.cgi?id=254958

Attachments:

Description	Flags
crash log	none

Robert Jenner

Reported 2023-05-03 14:13:02 PDT

TestWebKitAPI.WebKit.LockdownModeDefaultFirstUseMessage is a flaky crash on iOS. HISTORY: https://results.webkit.org/?suite=api-tests&test=TestWebKitAPI.WebKit.LockdownModeDefaultFirstUseMessage CRASH STDOUT: TestWebKitAPI.WebKit.LockdownModeDefaultFirstUseMessage Child process terminated with signal 11: Segmentation fault

Attachments
crash log (219.81 KB, text/plain) 2023-05-03 16:16 PDT, Ryan Haddad	no flags	Details
View All Add attachment proposed patch, testcase, etc.

Radar WebKit Bug Importer

Comment 1 2023-05-03 14:29:44 PDT

<rdar://problem/108860966>

Robert Jenner

Comment 2 2023-05-03 14:30:51 PDT

I was able to reproduce the crash at iOS 16 Debug ToT running the test as follows: run-api-tests TestWebKitAPI.WebKit.LockdownModeDefaultFirstUseMessage --iterations 100

Robert Jenner

Comment 3 2023-05-03 14:52:54 PDT

I believe I was able to bisect to a specific regression point, but I am still confirming. However, so far it appears that https://commits.webkit.org/262909@main may have caused this to occur. I have been able to successfully reproduce the Segmentation fault crash mentioned above at 262909@main, but I was not able to reproduce it at 262908@main. I'm going to run the test in a few more iterations, just to confirm.

Robert Jenner

Comment 4 2023-05-03 15:03:27 PDT

https://commits.webkit.org/262909@main does appear to have changes in it that impact lockdown mode, and since this is a lock down mode test, I believe that is the cause for this. Also, I wasn't able to reproduce the crash at 262908@main, so it does

Ryan Haddad

Comment 5 2023-05-03 16:16:45 PDT

Created attachment 466199 [details] crash log

youenn fablet

Comment 6 2023-05-09 00:20:23 PDT

*** Bug 256513 has been marked as a duplicate of this bug. ***

youenn fablet

Comment 7 2023-05-09 00:33:15 PDT

Pull request: https://github.com/WebKit/WebKit/pull/13631

EWS

Comment 8 2023-05-09 08:09:12 PDT

Committed 263865@main (83e11a3a6c03): <https://commits.webkit.org/263865@main> Reviewed commits have been landed. Closing PR #13631 and removing active labels.

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