[Webkit-unassigned] [Bug 239770] New: [ macOS Debug wk2 ] Four imported/w3c/web-platform-tests/html/semantics/embedded-content/media-elements/ are a flaky crash

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=239770

            Bug ID: 239770
           Summary: [ macOS Debug wk2 ] Four
                    imported/w3c/web-platform-tests/html/semantics/embedde
                    d-content/media-elements/ are a flaky crash
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: rackler at apple.com

Description:
imported/w3c/web-platform-tests/html/semantics/embedded-content/media-elements/event_order_canplay_canplaythrough.html
imported/w3c/web-platform-tests/html/semantics/embedded-content/media-elements/event_order_loadedmetadata_loadeddata.html
imported/w3c/web-platform-tests/html/semantics/embedded-content/media-elements/readyState_during_canplaythrough.html
imported/w3c/web-platform-tests/html/semantics/embedded-content/media-elements/readyState_during_playing.html

The first failure that I saw on the dashboard was 4/4/2022 at r292293, but this does not appear relevant to causing this issue.


REPRODUCTION STEPS
I can reproduce this on r292959, but unable to reproduce it on 292262.  

Command: 
run-webkit-tests --root --exit-after-n-failures 1 --exit-after-n-crashes-or-timeouts 1 --iterations 50 -f --no-retry

Result: 
Regressions: Unexpected crashes (1)
  imported/w3c/web-platform-tests/html/semantics/embedded-content/media-elements/event_order_canplay_canplaythrough.html [ Crash ]

Regressions: Unexpected crashes (1)
  imported/w3c/web-platform-tests/html/semantics/embedded-content/media-elements/event_order_loadedmetadata_loadeddata.html [ Crash ]

Regressions: Unexpected crashes (1)
  imported/w3c/web-platform-tests/html/semantics/embedded-content/media-elements/readyState_during_canplaythrough.html [ Crash ]

Regressions: Unexpected crashes (1)
  imported/w3c/web-platform-tests/html/semantics/embedded-content/media-elements/readyState_during_playing.html [ Crash ]


History:
https://results.webkit.org/?suite=layout-tests&suite=layout-tests&suite=layout-tests&suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fhtml%2Fsemantics%2Fembedded-content%2Fmedia-elements%2Fevent_order_canplay_canplaythrough.html&test=imported%2Fw3c%2Fweb-platform-tests%2Fhtml%2Fsemantics%2Fembedded-content%2Fmedia-elements%2Fevent_order_loadedmetadata_loadeddata.html&test=imported%2Fw3c%2Fweb-platform-tests%2Fhtml%2Fsemantics%2Fembedded-content%2Fmedia-elements%2FreadyState_during_canplaythrough.html&test=imported%2Fw3c%2Fweb-platform-tests%2Fhtml%2Fsemantics%2Fembedded-content%2Fmedia-elements%2FreadyState_during_playing.html&platform=mac&style=debug&limit=50000&flavor=gpuprocess&flavor=wk2

Crash Log:
No crash log found for com.apple.WebKit.WebContent.Development:86372.

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