[Webkit-unassigned] [Bug 229614] [ BigSur EWS] webrtc/video-mediastreamtrack-stats.html is a flaky crash / failing

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=229614

--- Comment #4 from Eric Carlson <eric.carlson at apple.com> ---
>From https://ews-build.s3-us-west-2.amazonaws.com/macOS-AppleSilicon-Big-Sur-Debug-WK2-Tests-EWS/r435500-9803/com.apple.WebKit.GPU.Development-95140-crash-log.txt

Crashed Thread:        18  Dispatch queue: vtencoder-callback-queue-0x14239fcf0

Exception Type:        EXC_BAD_ACCESS (SIGSEGV)
Exception Codes:       KERN_INVALID_ADDRESS at 0x0000000000000000
Exception Note:        EXC_CORPSE_NOTIFY

Termination Signal:    Segmentation fault: 11
Termination Reason:    Namespace SIGNAL, Code 0xb
Terminating Process:   exc handler [95140]


Thread 18 Crashed:: Dispatch queue: vtencoder-callback-queue-0x14239fcf0
0   libsystem_pthread.dylib             0x0000000180d85d9c pthread_mutex_lock + 0
1   com.apple.VideoToolbox              0x000000018bdd4858 VTEncoderSessionEmitEncodedFrame + 404
2   com.apple.VideoToolbox              0x000000018be82bb4 0x18bdc1000 + 793524
3   libxpc.dylib                        0x0000000180af57d0 _xpc_connection_call_event_handler + 172
4   libxpc.dylib                        0x0000000180af432c _xpc_connection_mach_event + 968
5   libdispatch.dylib                   0x0000000180bdbf8c _dispatch_client_callout4 + 20
6   libdispatch.dylib                   0x0000000180bf7114 _dispatch_mach_msg_invoke + 476
7   libdispatch.dylib                   0x0000000180be3570 _dispatch_lane_serial_drain + 308
8   libdispatch.dylib                   0x0000000180bf7e78 _dispatch_mach_invoke + 464
9   libdispatch.dylib                   0x0000000180be3570 _dispatch_lane_serial_drain + 308
10  libdispatch.dylib                   0x0000000180be42d8 _dispatch_lane_invoke + 456
11  libdispatch.dylib                   0x0000000180bed684 _dispatch_root_queue_drain + 388
12  libdispatch.dylib                   0x0000000180bed41c _dispatch_worker_thread + 236
13  libsystem_pthread.dylib             0x0000000180d8b878 _pthread_start + 320
14  libsystem_pthread.dylib             0x0000000180d865e0 thread_start + 8

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