[Webkit-unassigned] [Bug 231822] New: [ iOS15 Release ] imported/w3c/web-platform-tests/html/webappapis/user-prompts/print-during-unload.html is a flaky crash (no data while reading stdout for the server process)

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=231822

            Bug ID: 231822
           Summary: [ iOS15 Release ]
                    imported/w3c/web-platform-tests/html/webappapis/user-p
                    rompts/print-during-unload.html is a flaky crash (no
                    data while reading stdout for the server process)
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebGPU
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ehutchison at apple.com

Created attachment 441407

  --> https://bugs.webkit.org/attachment.cgi?id=441407&action=review

STDIO

imported/w3c/web-platform-tests/html/webappapis/user-prompts/print-during-unload.html

is a flaky crash on iOS15 Release.

History: https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fhtml%2Fwebappapis%2Fuser-prompts%2Fprint-during-unload.html&platform=ios&platform=mac

Build: https://build.webkit.org/#/builders/268/builds/177

Results: https://build.webkit.org/results/Apple-iOS-15-Simulator-Release-WK2-Tests/r284242%20(177)/results.html

Crash Log: none available:
No crash log found for GPUProcess:29969.

STDIO (attached):

08:54:02.711 13239 worker/2 GPUProcess crash, pid = 29969
08:54:02.789 13239 worker/2 This test marked as a crash because of no data while reading stdout for the server process.
08:54:02.789 13239 worker/2 This test marked as a crash because of no data while reading stdout for the server process.

08:54:42.845 13239 worker/2 worker/2 imported/w3c/web-platform-tests/html/webappapis/user-prompts/print-during-unload.html crashed, (no stderr)
08:54:42.846 13239 [44654/56664] imported/w3c/web-platform-tests/html/webappapis/user-prompts/print-during-unload.html failed unexpectedly (GPUProcess crashed [pid=29969])
08:54:42.846 13239 worker/2 killing driver

08:54:46.954 13239 worker/2 imported/w3c/web-platform-tests/html/webappapis/user-prompts/print-during-unload.html failed:
08:54:46.954 13239 worker/2 GPUProcess crashed [pid=29969]

There have been many bugs with similar diff stating "This test marked as a crash because of no data while reading stdout for the server process."

Not sure if this is related to WebGPU as all of these bugs have reported a GPUProcess crash.

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