223430 2021-03-18 02:39:17 -0700 Media tests crash sometimes with over-release of a CFTypeRef (423 / CVPixelBufferBacking) 2021-03-22 16:17:14 -0700 1 1 1 Unclassified WebKit WebGL Other Unspecified Unspecified NEW InRadar P2 Normal --- 217211 1 kkinnunen webkit-unassigned dino eric.carlson jer.noble kbr kkinnunen peng.liu6 webkit-bug-importer oldest_to_newest 1741109 0 kkinnunen 2021-03-18 02:39:17 -0700 Frequency: 1/20 maybe ../Internal/Tools/Scripts/run-webkit-tests --debug --order=random fast/canvas webgl Using port 'mac-bigsur-wk2' Test configuration: <bigsur, x86_64, debug> Placing test results in /Users/kkinnunen/Build/Debug/layout-test-results Using Debug build Pixel tests disabled Regular timeout: 30000, slow test timeout: 150000 ... [2774/2791] webgl/2.0.0/conformance2/textures/video/tex-2d-rgb32f-rgb-float.html failed unexpectedly (GPUProcess crashed [pid=51440]) Regressions: Unexpected crashes (1) webgl/2.0.0/conformance2/textures/video/tex-2d-rgb32f-rgb-float.html [ Crash ] .. Process: com.apple.WebKit.GPU.Development [51440] Path: /Users/USER/*/com.apple.WebKit.GPU.Development Identifier: com.apple.WebKit.GPU Version: 612+ (612.1.7+) Code Type: X86-64 (Native) Parent Process: ??? [1] User ID: 501 Date/Time: 2021-03-18 11:29:55.357 +0200 OS Version: macOS 11.3 (20E201) Report Version: 12 Bridge OS Version: 5.3 (18P4544) Anonymous UUID: ADEB2724-109F-6379-8A4B-657A6A37BBA8 Sleep/Wake UUID: BA4AE60D-ED97-4DE6-957D-5629D94106D9 Time Awake Since Boot: 96000 seconds Time Since Wake: 69000 seconds System Integrity Protection: enabled Crashed Thread: 18 Dispatch queue: com.apple.coremedia.player.async.0x7f853961ff90.P/WP Exception Type: EXC_BAD_INSTRUCTION (SIGILL) Exception Codes: 0x0000000000000001, 0x0000000000000000 Exception Note: EXC_CORPSE_NOTIFY Termination Signal: Illegal instruction: 4 Termination Reason: Namespace SIGNAL, Code 0x4 Terminating Process: exc handler [51440] Application Specific Information: Detected over-release of a CFTypeRef 0x7f853c81ba00 (423 / CVPixelBufferBacking) Thread 0:: Dispatch queue: com.apple.main-thread 0 com.apple.CoreFoundation 0x00007fff20683638 _CFXNotificationRegistrarRecycleNameRegistration + 46 1 com.apple.CoreFoundation 0x00007fff20681446 CFXNotificationRegistrarRemove + 263 2 com.apple.CoreFoundation 0x00007fff20577d36 _CFXNotificationRemoveObservers + 113 3 com.apple.Foundation 0x00007fff212d48e2 -[NSNotificationCenter removeObserver:name:object:] + 265 4 com.apple.AVFCore 0x00007fff315cd188 -[AVCMNotificationDispatcher removeListenerWithWeakReference:callback:name:object:] + 68 5 com.apple.AVFCore 0x00007fff315ce4b7 -[AVPlayerItem _removeFPListeners] + 304 6 com.apple.AVFCore 0x00007fff315cdefa -[AVPlayerItem dealloc] + 58 7 libsystem_blocks.dylib 0x00007fff201b6605 _Block_release + 128 8 libdispatch.dylib 0x00007fff202d37e6 _dispatch_client_callout + 8 9 libdispatch.dylib 0x00007fff202dfb2f _dispatch_main_queue_callback_4CF + 940 10 com.apple.CoreFoundation 0x00007fff205b3a98 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 9 11 com.apple.CoreFoundation 0x00007fff20575c82 __CFRunLoopRun + 2755 12 com.apple.CoreFoundation 0x00007fff20574afc CFRunLoopRunSpecific + 563 13 com.apple.Foundation 0x00007fff212febb7 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 212 14 com.apple.Foundation 0x00007fff2138ca81 -[NSRunLoop(NSRunLoop) run] + 76 15 libxpc.dylib 0x00007fff201cc38d _xpc_objc_main + 825 16 libxpc.dylib 0x00007fff201cbcd3 xpc_main + 116 17 com.apple.WebKit 0x00000001127b56a1 WebKit::XPCServiceMain(int, char const**) + 1025 (XPCServiceMain.mm:209) 18 com.apple.WebKit 0x0000000113dc124b WKXPCServiceMain + 27 (WKMain.mm:33) 19 com.apple.WebKit.GPU 0x000000010c487ea2 main + 34 (AuxiliaryProcessMain.cpp:30) 20 libdyld.dylib 0x00007fff20498f3d start + 1 Thread 1:: JavaScriptCore bmalloc scavenger 1741110 1 webkit-bug-importer 2021-03-18 02:39:54 -0700 <rdar://problem/75566034> 1742544 2 ap 2021-03-22 16:17:14 -0700 > Crashed Thread: 18 Dispatch queue: com.apple.coremedia.player.async.0x7f853961ff90.P/WP Looking at thread 18 in a complete crash log, there isn't any WebKit code running. Is this likely to be a WebKit issue? Or are we doing something in GPU Process to trigger it more than before?