[Webkit-unassigned] [Bug 239474] New: [ macOS ] TestWebKitAPI.WebKit2.SpeechRecognitionErrorWhenStartingAudioCaptureOnDifferentPageE is a flaky crash

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=239474

            Bug ID: 239474
           Summary: [ macOS ]
                    TestWebKitAPI.WebKit2.SpeechRecognitionErrorWhenStarti
                    ngAudioCaptureOnDifferentPageE is 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:
This API test is a flaky crash on [ macOS ] bots

The first crash that I see on the dashboard for Monterey was 3/18/2022 at r291517, and for BigSur 2/22/2022 at r290314.  There was not one commit that I observe causing this issue.  This test seems to have been flaky since the start.

History: 
https://results.webkit.org/?suite=api-tests&test=TestWebKitAPI.WebKit2.SpeechRecognitionErrorWhenStartingAudioCaptureOnDifferentPage&limit=50000&platform=mac

Crash Log:
Bot failed to capture the crash log with:
Test suite failed
Crashed
    TestWebKitAPI.WebKit2.SpeechRecognitionErrorWhenStartingAudioCaptureOnDifferentPage

Pulled the crash log off the bot: 
Thread 4 Crashed::  Dispatch queue: MockAudioSharedUnit Capture Queue
0   WebCore                                    0x115aac6b4 _cxx_atomic_fetch_add<unsigned int> + 0 (atomic:1061) [inlined]
1   WebCore                                    0x115aac6b4 fetch_add + 0 (atomic:1748) [inlined]
2   WebCore                                    0x115aac6b4 operator++ + 0 (atomic:1785) [inlined]
3   WebCore                                    0x115aac6b4 ref + 0 (ThreadSafeRefCounted.h:60) [inlined]
4   WebCore                                    0x115aac6b4 Ref + 8 (Ref.h:67) [inlined]
5   WebCore                                    0x115aac6b4 Ref + 8 (Ref.h:66) [inlined]
6   WebCore                                    0x115aac6b4 WebCore::AudioSampleDataSource::AudioSampleDataSource(unsigned long, WTF::LoggerHelper&, unsigned long) + 176 (AudioSampleDataSource.mm:57)

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