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.
<rdar://problem/84814324>
Updated test expectations at https://trac.webkit.org/changeset/285039/webkit