Bug 232497 – [ BigSur Debug wk2 arm64 EWS-only ] media/media-source/media-source-istypesupported-case-sensitive.html is a flaky crash

• Status: NEW
• Component: Media

[Eric Hutchison]

Created attachment 442843 [details]
Crash Log

media/media-source/media-source-istypesupported-case-sensitive.html

is a flaky crash on EWS-only on BigSur wk2 Debug arm64. It is not seen failing on OpenSource.

History: https://results.webkit.org/?suite=layout-tests&test=media/media-source/media-source-istypesupported-case-sensitive.html

Build: https://ews-build.webkit.org/#/builders/60/builds/15664

Results: https://ews-build.s3-us-west-2.amazonaws.com/macOS-AppleSilicon-Big-Sur-Debug-WK2-Tests-EWS/r442804-15664-rerun/results.html

Crash Log (attached): https://ews-build.s3-us-west-2.amazonaws.com/macOS-AppleSilicon-Big-Sur-Debug-WK2-Tests-EWS/r442804-15664-rerun/com.apple.WebKit.GPU.Development-29124-crash-log.txt

STDERR: No crash log found for GPUProcess:29124.

stdout:

stderr:
LEAK: 1 WebPageProxy

Crash:
Thread 17 Crashed:: Dispatch queue: com.apple.coremedia.videoqueue.notification
0   com.apple.CoreMedia           	0x000000019a8cdda4 FigBaseObjectFinalize + 80
1   com.apple.CoreFoundation      	0x0000000192d08e20 _CFRelease + 248
2   com.apple.CoreFoundation      	0x0000000192d08e20 _CFRelease + 248
3   com.apple.MediaToolbox        	0x000000019e550338 0x19dfb8000 + 5866296
4   libdispatch.dylib             	0x0000000192982128 _dispatch_call_block_and_release + 32
5   libdispatch.dylib             	0x0000000192983ec0 _dispatch_client_callout + 20
6   libdispatch.dylib             	0x000000019298b6a8 _dispatch_lane_serial_drain + 620
7   libdispatch.dylib             	0x000000019298c2a4 _dispatch_lane_invoke + 404
8   libdispatch.dylib             	0x0000000192996b74 _dispatch_workloop_worker_thread + 764
9   libsystem_pthread.dylib       	0x0000000192b2f89c _pthread_wqthread + 276
10  libsystem_pthread.dylib       	0x0000000192b2e5d4 start_wqthread + 8

This is not seen on OpenSource and I was not able to reproduce the crash locally.

[Radar WebKit Bug Importer]

<rdar://problem/84814324>

[Eric Hutchison]

Updated test expectations at https://trac.webkit.org/changeset/285039/webkit