When attempting to replicate this crash, I actually found the test is a text diff failure. I ran the test at iOS 16 ToT as follows: run-webkit-tests --ios-simulator fast/scrolling/keyboard-scrolling-distance-pageDown.html --force --iterations 100 I used force because there appears to be multiple expectations set and when using iterations, I found that I get 8 constant failures in the set. Each time the iterations are ran, more failures appear. I still have no replicated the crash though it is showing as a constant crash on results.

CRASH LOG: ------------------------------------- Translated Report (Full Report Below) ------------------------------------- Incident Identifier: 3663C409-1323-44C8-8214-6DC5EDF9FBF8 CrashReporter Key: B35ECDD1-A446-AD9E-47A3-3DFE219BAD03 Hardware Model: MacPro6,1 Process: WebKitTestRunnerApp [24927] Path: /Users/USER/Library/Developer/CoreSimulator/Devices/EFFB6176-3DCB-4397-8099-C19C63093F41/data/Containers/Bundle/Application/C766A9B4-298C-45D2-9ECD-61FA1C36ED9B/WebKitTestRunnerApp.app/WebKitTestRunnerApp Identifier: org.webkit.WebKitTestRunnerApp Version: 1.0 (1.0) Code Type: X86-64 (Native) Role: Foreground Parent Process: launchd_sim [21811] Coalition: com.apple.CoreSimulator.SimDevice.EFFB6176-3DCB-4397-8099-C19C63093F41 [11283] Responsible Process: SimulatorTrampoline [21203] Date/Time: 2023-03-03 03:31:43.3779 -0800 Launch Time: 2023-03-03 03:29:57.0137 -0800 OS Version: macOS 12.6 (21G115) Release Type: User Report Version: 104 Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Subtype: KERN_INVALID_ADDRESS at 0x0000000000000000 Exception Codes: 0x0000000000000001, 0x0000000000000000 VM Region Info: 0 is not in any region. Bytes before following region: 4313169920 REGION TYPE START - END [ VSIZE] PRT/MAX SHRMOD REGION DETAIL UNUSED SPACE AT START ---> __TEXT 10115c000-1011f8000 [ 624K] r-x/r-x SM=COW ...TestRunnerApp Exception Note: EXC_CORPSE_NOTIFY Termination Reason: SIGNAL 11 Segmentation fault: 11 Terminating Process: exc handler [24927] Triggered by Thread: 0 Thread 0 Crashed:: Dispatch queue: com.apple.main-thread 0 WebKit 0x102475f5d -[WKWebView(WKViewInternalIOS) _didFinishScrolling:] + 108 (WKWebViewIOS.mm:1842) 1 WebKitTestRunnerApp 0x1011c9ddd -[TestRunnerWKWebView _didFinishScrolling:] + 45 2 WebKit 0x10255f667 -[WKKeyboardScrollingAnimator displayLinkFired:] + 626 (WKKeyboardScrollingAnimator.mm:447) 3 QuartzCore 0x7ff80872ff2f CA::Display::DisplayLink::dispatch_items(unsigned long long, unsigned long long, unsigned long long) + 923 4 QuartzCore 0x7ff8088547a9 display_timer_callback(__CFMachPort*, void*, long, void*) + 395 5 CoreFoundation 0x7ff800352d5f __CFMachPortPerform + 151 6 CoreFoundation 0x7ff8003876cc __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 41 7 CoreFoundation 0x7ff800386c13 __CFRunLoopDoSource1 + 538 8 CoreFoundation 0x7ff8003814c8 __CFRunLoopRun + 2740 9 CoreFoundation 0x7ff800380637 CFRunLoopRunSpecific + 560 10 Foundation 0x7ff800c569fc -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 213 11 WebKitTestRunnerApp 0x1011a488d WTR::TestController::platformRunUntil(bool&, WTF::Seconds) + 237 12 WebKitTestRunnerApp 0x10117fefa WTR::TestController::runUntil(bool&, WTF::Seconds) + 26 13 WebKitTestRunnerApp 0x1011b5173 WTR::TestInvocation::invoke() + 323 14 WebKitTestRunnerApp 0x101185ce7 WTR::TestController::runTest(char const*) + 391 15 WebKitTestRunnerApp 0x101185f28 WTR::TestController::runTestingServerLoop() + 152 16 WebKitTestRunnerApp 0x10118052b WTR::TestController::run() + 27 17 WebKitTestRunnerApp 0x10118016b WTR::TestController::TestController(int, char const**) + 603 18 WebKitTestRunnerApp 0x101180599 WTR::TestController::TestController(int, char const**) + 9 19 WebKitTestRunnerApp 0x101163608 -[WebKitTestRunnerApp _runTestController] + 40 20 Foundation 0x7ff800c8067d __NSThreadPerformPerform + 179 21 CoreFoundation 0x7ff800386ebd __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17 22 CoreFoundation 0x7ff800386dfc __CFRunLoopDoSource0 + 157 23 CoreFoundation 0x7ff800386659 __CFRunLoopDoSources0 + 308 24 CoreFoundation 0x7ff800380db3 __CFRunLoopRun + 927 25 CoreFoundation 0x7ff800380637 CFRunLoopRunSpecific + 560 26 GraphicsServices 0x7ff809c0f28a GSEventRunModal + 139 27 UIKitCore 0x112f2e425 -[UIApplication _run] + 994 28 UIKitCore 0x112f33301 UIApplicationMain + 123 29 WebKitTestRunnerApp 0x101163711 main + 65 30 dyld_sim 0x1017262bf start_sim + 10 31 dyld 0x10675d52e start + 462 Thread 1:: com.apple.uikit.eventfetch-thread 0 libsystem_kernel.dylib 0x7ff833ddf97a mach_msg_trap + 10 1 libsystem_kernel.dylib 0x7ff833ddfce8 mach_msg + 56 2 CoreFoundation 0x7ff800386766 __CFRunLoopServiceMachPort + 145 3 CoreFoundation 0x7ff800380f6f __CFRunLoopRun + 1371 4 CoreFoundation 0x7ff800380637 CFRunLoopRunSpecific + 560 5 Foundation 0x7ff800c569fc -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 213 6 Foundation 0x7ff800c56c75 -[NSRunLoop(NSRunLoop) runUntilDate:] + 72 7 UIKitCore 0x113001e7e -[UIEventFetcher threadMain] + 535 8 Foundation 0x7ff800c80247 __NSThread__start__ + 1009 9 libsystem_pthread.dylib 0x7ff833e3d4e1 _pthread_start + 125 10 libsystem_pthread.dylib 0x7ff833e38f6b thread_start + 15 Thread 2:: JavaScriptCore libpas scavenger 0 libsystem_kernel.dylib 0x7ff833de23ea __psynch_cvwait + 10 1 libsystem_pthread.dylib 0x7ff833e3da6f _pthread_cond_wait + 1249 2 JavaScriptCore 0x106907bea timed_wait + 22 (pas_scavenger.c:145) [inlined] 3 JavaScriptCore 0x106907bea scavenger_thread_main + 1114 (pas_scavenger.c:359) 4 libsystem_pthread.dylib 0x7ff833e3d4e1 _pthread_start + 125 5 libsystem_pthread.dylib 0x7ff833e38f6b thread_start + 15 Thread 3: 0 libsystem_pthread.dylib 0x7ff833e38f48 start_wqthread + 0 Thread 4: 0 libsystem_pthread.dylib 0x7ff833e38f48 start_wqthread + 0 Thread 5: 0 libsystem_pthread.dylib 0x7ff833e38f48 start_wqthread + 0 Thread 6: 0 libsystem_pthread.dylib 0x7ff833e38f48 start_wqthread + 0 Thread 7: 0 libsystem_pthread.dylib 0x7ff833e38f48 start_wqthread + 0 Thread 8: 0 libsystem_pthread.dylib 0x7ff833e38f48 start_wqthread + 0 Thread 0 crashed with X86 Thread State (64-bit): rax: 0x00007fc092055020 rbx: 0x00007fc09001b800 rcx: 0x0000000000000000 rdx: 0x0000000000000103 rdi: 0x0000000000000000 rsi: 0x0000000102bfb06f rbp: 0x00007ff7bed9dc50 rsp: 0x00007ff7bed9dc40 r8: 0x0000000000000200 r9: 0x00007fc0978251f0 r10: 0x0000000102cc9e90 r11: 0x0000000102a476ca r12: 0x00007ff7bed9dc98 r13: 0x00007ff80002d6c0 r14: 0x00007ff80002d6c0 r15: 0x0000600002d9e7b0 rip: 0x0000000102475f5d rfl: 0x0000000000010246 cr2: 0x0000000000000000 Logical CPU: 1 Error Code: 0x00000004 (no mapping for user data read) Trap Number: 14 Binary Images: 0x1020b1000 - 0x102c24fff com.apple.WebKit (616+) <4fea7369-9706-3701-a35a-c256da4445b6> /Volumes/VOLUME/*/WebKit.framework/WebKit 0x10115c000 - 0x1011f7fff org.webkit.WebKitTestRunnerApp (1.0) <4016d377-5b5c-3de2-b730-c22c1936c132> /Users/USER/Library/Developer/CoreSimulator/Devices/EFFB6176-3DCB-4397-8099-C19C63093F41/data/Containers/Bundle/Application/C766A9B4-298C-45D2-9ECD-61FA1C36ED9B/WebKitTestRunnerApp.app/WebKitTestRunnerApp 0x7ff808721000 - 0x7ff808a26ff2 com.apple.QuartzCore (1.11) <ee0160c3-200f-33bf-9443-9e0fe393b851> /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/QuartzCore.framework/QuartzCore 0x7ff800302000 - 0x7ff800689ffc com.apple.CoreFoundation (6.9) <b5a38680-23b2-3ada-8f11-32c707243f2f> /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation 0x7ff8006fc000 - 0x7ff80102eff4 com.apple.Foundation (6.9) <0ccd4306-bb63-3964-8ff5-e8d30bf494f5> /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/Foundation.framework/Foundation 0x7ff809c0c000 - 0x7ff809c13ff2 com.apple.GraphicsServices (1.0) <48f162ca-ddc3-3479-8660-020ca125d2b8> /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/GraphicsServices.framework/GraphicsServices 0x1120fe000 - 0x113ba3fff com.apple.UIKitCore (1.0) <35e99f75-b102-3980-ad6e-a8ce4d94ca2b> /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/UIKitCore.framework/UIKitCore 0x101724000 - 0x101783fff dyld_sim (*) <db2ea9eb-03d5-3b81-a6ce-26ec4dd81b07> /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/dyld_sim 0x106758000 - 0x1067c3fff dyld (*) <71febccd-d9dc-3599-9971-2b3407c588a8> /usr/lib/dyld 0x7ff833dde000 - 0x7ff833e15fff libsystem_kernel.dylib (*) <8cc28466-fd2f-3c80-9834-9525b7beac19> /usr/lib/system/libsystem_kernel.dylib 0x7ff833e37000 - 0x7ff833e42ff7 libsystem_pthread.dylib (*) <b5454e27-e8c7-3fdb-b77f-714f1e82e70b> /usr/lib/system/libsystem_pthread.dylib 0x106810000 - 0x107e3bfff com.apple.JavaScriptCore (616+) <619f9002-c57d-335e-98e1-c5a00cf272f6> /Volumes/VOLUME/*/JavaScriptCore.framework/JavaScriptCore EOF ----------- Full Report ----------- {"app_name":"WebKitTestRunnerApp","timestamp":"2023-03-03 03:32:59.00 -0800","app_version":"1.0","slice_uuid":"4016d377-5b5c-3de2-b730-c22c1936c132","build_version":"1.0","platform":7,"bundleID":"org.webkit.WebKitTestRunnerApp","share_with_app_devs":0,"is_first_party":0,"bug_type":"309","os_version":"macOS 12.6 (21G115)","incident_id":"3663C409-1323-44C8-8214-6DC5EDF9FBF8","name":"WebKitTestRunnerApp"} { "uptime" : 1200000, "procLaunch" : "2023-03-03 03:29:57.0137 -0800", "procRole" : "Foreground", "version" : 2, "userID" : 501, "deployVersion" : 210, "modelCode" : "MacPro6,1", "procStartAbsTime" : 1286646482999543, "coalitionID" : 11283, "osVersion" : { "train" : "macOS 12.6", "build" : "21G115", "releaseType" : "User" }, "captureTime" : "2023-03-03 03:31:43.3779 -0800", "incident" : "3663C409-1323-44C8-8214-6DC5EDF9FBF8", "bug_type" : "309", "pid" : 24927, "procExitAbsTime" : 1286752843770230, "cpuType" : "X86-64", "procName" : "WebKitTestRunnerApp", "procPath" : "\/Users\/USER\/Library\/Developer\/CoreSimulator\/Devices\/EFFB6176-3DCB-4397-8099-C19C63093F41\/data\/Containers\/Bundle\/Application\/C766A9B4-298C-45D2-9ECD-61FA1C36ED9B\/WebKitTestRunnerApp.app\/WebKitTestRunnerApp", "bundleInfo" : {"CFBundleShortVersionString":"1.0","CFBundleVersion":"1.0","CFBundleIdentifier":"org.webkit.WebKitTestRunnerApp"}, "storeInfo" : {"deviceIdentifierForVendor":"2ACF4751-9697-5EE8-AABA-AF097CABD804","thirdParty":true}, "parentProc" : "launchd_sim", "parentPid" : 21811, "coalitionName" : "com.apple.CoreSimulator.SimDevice.EFFB6176-3DCB-4397-8099-C19C63093F41", "crashReporterKey" : "B35ECDD1-A446-AD9E-47A3-3DFE219BAD03", "responsiblePid" : 21203, "responsibleProc" : "SimulatorTrampoline", "sip" : "enabled", "vmRegionInfo" : "0 is not in any region. Bytes before following region: 4313169920\n REGION TYPE START - END [ VSIZE] PRT\/MAX SHRMOD REGION DETAIL\n UNUSED SPACE AT START\n---> \n __TEXT 10115c000-1011f8000 [ 624K] r-x\/r-x SM=COW ...TestRunnerApp", "isCorpse" : 1, "exception" : {"codes":"0x0000000000000001, 0x0000000000000000","rawCodes":[1,0],"type":"EXC_BAD_ACCESS","signal":"SIGSEGV","subtype":"KERN_INVALID_ADDRESS at 0x0000000000000000"}, "termination" : {"flags":0,"code":11,"namespace":"SIGNAL","indicator":"Segmentation fault: 11","byProc":"exc handler","byPid":24927}, "vmregioninfo" : "0 is not in any region. Bytes before following region: 4313169920\n REGION TYPE START - END [ VSIZE] PRT\/MAX SHRMOD REGION DETAIL\n UNUSED SPACE AT START\n---> \n __TEXT 10115c000-1011f8000 [ 624K] r-x\/r-x SM=COW ...TestRunnerApp", "extMods" : {"caller":{"thread_create":0,"thread_set_state":0,"task_for_pid":0},"system":{"thread_create":0,"thread_set_state":0,"task_for_pid":0},"targeted":{"thread_create":0,"thread_set_state":0,"task_for_pid":0},"warnings":0}, "faultingThread" : 0, "threads" : [{"triggered":true,"id":61169829,"instructionState":{"instructionStream":{"bytes":[132,0,72,139,0,72,57,20,7,117,100,72,137,251,72,139,53,94,111,132,0,255,21,144,154,123,0,132,192,116,80,72,139,53,13,220,131,0,76,139,53,126,154,123,0,72,137,223,65,255,214,72,141,5,153,206,132,0,72,139,0,72,139,60,3,72,139,53,211,18,132,0,65,255,214,72,141,5,49,206,132,0,72,139,0,72,139,4,3,72,139,184,0,1,0,0,72,139,7,72,139,64,80,49,246,91,65,94,93,255,224,91,65,94,93,195,85,72,137,229,65,87,65,86,65,85,65,84,83,72,129,236,152,0,0,0,73,137,206,242,15,17,77,176,242,15,17,69,184,73,137,212,73,137,255,72,139,53,105,47,132,0,72,137,215,255,21,0,154,123,0,132,192,116,23,72,139,53,93,10,132,0,76,137,231,255,21,236,153,123,0,242],"offset":96}},"threadState":{"r13":{"value":140703128803008,"symbolLocation":0,"symbol":"objc_msgSend"},"rax":{"value":140465060270112},"rflags":{"value":66118},"cpu":{"value":1},"r14":{"value":140703128803008,"symbolLocation":0,"symbol":"objc_msgSend"},"rsi":{"value":4341084271},"r8":{"value":512},"cr2":{"value":0},"rdx":{"value":259},"r10":{"value":4341931664,"symbolLocation":0,"symbol":"OBJC_CLASS_$_WKContentView"},"r9":{"value":140465152348656},"r15":{"value":105553164101552},"rbx":{"value":140465026480128},"trap":{"value":14,"description":"(no mapping for user data read)"},"err":{"value":4},"r11":{"sourceLine":1944,"value":4339300042,"sourceFile":"WKContentViewInteraction.mm","symbol":"-[WKContentView(WKInteraction) _resetPanningPreventionFlags]","symbolLocation":0},"rip":{"value":4333199197,"matchesCrashFrame":1},"rbp":{"value":140702035598416},"rsp":{"value":140702035598400},"r12":{"value":140702035598488},"rcx":{"value":0},"flavor":"x86_THREAD_STATE","rdi":{"value":0}},"queue":"com.apple.main-thread","frames":[{"imageOffset":3952477,"sourceLine":1842,"sourceFile":"WKWebViewIOS.mm","symbol":"-[WKWebView(WKViewInternalIOS) _didFinishScrolling:]","imageIndex":0,"symbolLocation":108},{"imageOffset":450013,"symbol":"-[TestRunnerWKWebView _didFinishScrolling:]","symbolLocation":45,"imageIndex":1},{"imageOffset":4908647,"sourceLine":447,"sourceFile":"WKKeyboardScrollingAnimator.mm","symbol":"-[WKKeyboardScrollingAnimator displayLinkFired:]","imageIndex":0,"symbolLocation":626},{"imageOffset":61231,"symbol":"CA::Display::DisplayLink::dispatch_items(unsigned long long, unsigned long long, unsigned long long)","symbolLocation":923,"imageIndex":2},{"imageOffset":1259433,"symbol":"display_timer_callback(__CFMachPort*, void*, long, void*)","symbolLocation":395,"imageIndex":2},{"imageOffset":331103,"symbol":"__CFMachPortPerform","symbolLocation":151,"imageIndex":3},{"imageOffset":546508,"symbol":"__CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__","symbolLocation":41,"imageIndex":3},{"imageOffset":543763,"symbol":"__CFRunLoopDoSource1","symbolLocation":538,"imageIndex":3},{"imageOffset":521416,"symbol":"__CFRunLoopRun","symbolLocation":2740,"imageIndex":3},{"imageOffset":517687,"symbol":"CFRunLoopRunSpecific","symbolLocation":560,"imageIndex":3},{"imageOffset":5614076,"symbol":"-[NSRunLoop(NSRunLoop) runMode:beforeDate:]","symbolLocation":213,"imageIndex":4},{"imageOffset":297101,"symbol":"WTR::TestController::platformRunUntil(bool&, WTF::Seconds)","symbolLocation":237,"imageIndex":1},{"imageOffset":147194,"symbol":"WTR::TestController::runUntil(bool&, WTF::Seconds)","symbolLocation":26,"imageIndex":1},{"imageOffset":364915,"symbol":"WTR::TestInvocation::invoke()","symbolLocation":323,"imageIndex":1},{"imageOffset":171239,"symbol":"WTR::TestController::runTest(char const*)","symbolLocation":391,"imageIndex":1},{"imageOffset":171816,"symbol":"WTR::TestController::runTestingServerLoop()","symbolLocation":152,"imageIndex":1},{"imageOffset":148779,"symbol":"WTR::TestController::run()","symbolLocation":27,"imageIndex":1},{"imageOffset":147819,"symbol":"WTR::TestController::TestController(int, char const**)","symbolLocation":603,"imageIndex":1},{"imageOffset":148889,"symbol":"WTR::TestController::TestController(int, char const**)","symbolLocation":9,"imageIndex":1},{"imageOffset":30216,"symbol":"-[WebKitTestRunnerApp _runTestController]","symbolLocation":40,"imageIndex":1},{"imageOffset":5785213,"symbol":"__NSThreadPerformPerform","symbolLocation":179,"imageIndex":4},{"imageOffset":544445,"symbol":"__CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__","symbolLocation":17,"imageIndex":3},{"imageOffset":544252,"symbol":"__CFRunLoopDoSource0","symbolLocation":157,"imageIndex":3},{"imageOffset":542297,"symbol":"__CFRunLoopDoSources0","symbolLocation":308,"imageIndex":3},{"imageOffset":519603,"symbol":"__CFRunLoopRun","symbolLocation":927,"imageIndex":3},{"imageOffset":517687,"symbol":"CFRunLoopRunSpecific","symbolLocation":560,"imageIndex":3},{"imageOffset":12938,"symbol":"GSEventRunModal","symbolLocation":139,"imageIndex":5},{"imageOffset":14877733,"symbol":"-[UIApplication _run]","symbolLocation":994,"imageIndex":6},{"imageOffset":14897921,"symbol":"UIApplicationMain","symbolLocation":123,"imageIndex":6},{"imageOffset":30481,"symbol":"main","symbolLocation":65,"imageIndex":1},{"imageOffset":8895,"symbol":"start_sim","symbolLocation":10,"imageIndex":7},{"imageOffset":21806,"symbol":"start","symbolLocation":462,"imageIndex":8}]},{"id":61169860,"name":"com.apple.uikit.eventfetch-thread","frames":[{"imageOffset":6522,"symbol":"mach_msg_trap","symbolLocation":10,"imageIndex":9},{"imageOffset":7400,"symbol":"mach_msg","symbolLocation":56,"imageIndex":9},{"imageOffset":542566,"symbol":"__CFRunLoopServiceMachPort","symbolLocation":145,"imageIndex":3},{"imageOffset":520047,"symbol":"__CFRunLoopRun","symbolLocation":1371,"imageIndex":3},{"imageOffset":517687,"symbol":"CFRunLoopRunSpecific","symbolLocation":560,"imageIndex":3},{"imageOffset":5614076,"symbol":"-[NSRunLoop(NSRunLoop) runMode:beforeDate:]","symbolLocation":213,"imageIndex":4},{"imageOffset":5614709,"symbol":"-[NSRunLoop(NSRunLoop) runUntilDate:]","symbolLocation":72,"imageIndex":4},{"imageOffset":15744638,"symbol":"-[UIEventFetcher threadMain]","symbolLocation":535,"imageIndex":6},{"imageOffset":5784135,"symbol":"__NSThread__start__","symbolLocation":1009,"imageIndex":4},{"imageOffset":25825,"symbol":"_pthread_start","symbolLocation":125,"imageIndex":10},{"imageOffset":8043,"symbol":"thread_start","symbolLocation":15,"imageIndex":10}]},{"id":61169864,"name":"JavaScriptCore libpas scavenger","frames":[{"imageOffset":17386,"symbol":"__psynch_cvwait","symbolLocation":10,"imageIndex":9},{"imageOffset":27247,"symbol":"_pthread_cond_wait","symbolLocation":1249,"imageIndex":10},{"symbol":"timed_wait","inline":true,"imageIndex":11,"imageOffset":1014762,"symbolLocation":22,"sourceLine":145,"sourceFile":"pas_scavenger.c"},{"imageOffset":1014762,"sourceLine":359,"sourceFile":"pas_scavenger.c","symbol":"scavenger_thread_main","imageIndex":11,"symbolLocation":1114},{"imageOffset":25825,"symbol":"_pthread_start","symbolLocation":125,"imageIndex":10},{"imageOffset":8043,"symbol":"thread_start","symbolLocation":15,"imageIndex":10}]},{"id":61178580,"frames":[{"imageOffset":8008,"symbol":"start_wqthread","symbolLocation":0,"imageIndex":10}]},{"id":61178581,"frames":[{"imageOffset":8008,"symbol":"start_wqthread","symbolLocation":0,"imageIndex":10}]},{"id":61178588,"frames":[{"imageOffset":8008,"symbol":"start_wqthread","symbolLocation":0,"imageIndex":10}]},{"id":61178591,"frames":[{"imageOffset":8008,"symbol":"start_wqthread","symbolLocation":0,"imageIndex":10}]},{"id":61178592,"frames":[{"imageOffset":8008,"symbol":"start_wqthread","symbolLocation":0,"imageIndex":10}]},{"id":61178593,"frames":[{"imageOffset":8008,"symbol":"start_wqthread","symbolLocation":0,"imageIndex":10}]}], "usedImages" : [ { "source" : "P", "arch" : "x86_64", "base" : 4329246720, "CFBundleShortVersionString" : "616+", "CFBundleIdentifier" : "com.apple.WebKit", "size" : 12009472, "uuid" : "4fea7369-9706-3701-a35a-c256da4445b6", "path" : "\/Volumes\/VOLUME\/*\/WebKit.framework\/WebKit", "name" : "WebKit", "CFBundleVersion" : "616.1.5+" }, { "source" : "P", "arch" : "x86_64", "base" : 4313169920, "CFBundleShortVersionString" : "1.0", "CFBundleIdentifier" : "org.webkit.WebKitTestRunnerApp", "size" : 638976, "uuid" : "4016d377-5b5c-3de2-b730-c22c1936c132", "path" : "\/Users\/USER\/Library\/Developer\/CoreSimulator\/Devices\/EFFB6176-3DCB-4397-8099-C19C63093F41\/data\/Containers\/Bundle\/Application\/C766A9B4-298C-45D2-9ECD-61FA1C36ED9B\/WebKitTestRunnerApp.app\/WebKitTestRunnerApp", "name" : "WebKitTestRunnerApp", "CFBundleVersion" : "1.0" }, { "source" : "P", "arch" : "x86_64", "base" : 140703270309888, "CFBundleShortVersionString" : "1.11", "CFBundleIdentifier" : "com.apple.QuartzCore", "size" : 3170291, "uuid" : "ee0160c3-200f-33bf-9443-9e0fe393b851", "path" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Library\/Developer\/CoreSimulator\/Profiles\/Runtimes\/iOS.simruntime\/Contents\/Resources\/RuntimeRoot\/System\/Library\/Frameworks\/QuartzCore.framework\/QuartzCore", "name" : "QuartzCore", "CFBundleVersion" : "1042.6.7" }, { "source" : "P", "arch" : "x86_64", "base" : 140703131770880, "CFBundleShortVersionString" : "6.9", "CFBundleIdentifier" : "com.apple.CoreFoundation", "size" : 3702781, "uuid" : "b5a38680-23b2-3ada-8f11-32c707243f2f", "path" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Library\/Developer\/CoreSimulator\/Profiles\/Runtimes\/iOS.simruntime\/Contents\/Resources\/RuntimeRoot\/System\/Library\/Frameworks\/CoreFoundation.framework\/CoreFoundation", "name" : "CoreFoundation", "CFBundleVersion" : "1946.102" }, { "source" : "P", "arch" : "x86_64", "base" : 140703135940608, "CFBundleShortVersionString" : "6.9", "CFBundleIdentifier" : "com.apple.Foundation", "size" : 9646069, "uuid" : "0ccd4306-bb63-3964-8ff5-e8d30bf494f5", "path" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Library\/Developer\/CoreSimulator\/Profiles\/Runtimes\/iOS.simruntime\/Contents\/Resources\/RuntimeRoot\/System\/Library\/Frameworks\/Foundation.framework\/Foundation", "name" : "Foundation", "CFBundleVersion" : "1946.102" }, { "source" : "P", "arch" : "x86_64", "base" : 140703292243968, "CFBundleShortVersionString" : "1.0", "CFBundleIdentifier" : "com.apple.GraphicsServices", "size" : 32755, "uuid" : "48f162ca-ddc3-3479-8660-020ca125d2b8", "path" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Library\/Developer\/CoreSimulator\/Profiles\/Runtimes\/iOS.simruntime\/Contents\/Resources\/RuntimeRoot\/System\/Library\/PrivateFrameworks\/GraphicsServices.framework\/GraphicsServices", "name" : "GraphicsServices", "CFBundleVersion" : "1.0" }, { "source" : "P", "arch" : "x86_64", "base" : 4597997568, "CFBundleShortVersionString" : "1.0", "CFBundleIdentifier" : "com.apple.UIKitCore", "size" : 27942912, "uuid" : "35e99f75-b102-3980-ad6e-a8ce4d94ca2b", "path" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Library\/Developer\/CoreSimulator\/Profiles\/Runtimes\/iOS.simruntime\/Contents\/Resources\/RuntimeRoot\/System\/Library\/PrivateFrameworks\/UIKitCore.framework\/UIKitCore", "name" : "UIKitCore", "CFBundleVersion" : "6092.1.111" }, { "source" : "P", "arch" : "x86_64", "base" : 4319232000, "size" : 393216, "uuid" : "db2ea9eb-03d5-3b81-a6ce-26ec4dd81b07", "path" : "\/Applications\/Xcode.app\/Contents\/Developer\/Platforms\/iPhoneOS.platform\/Library\/Developer\/CoreSimulator\/Profiles\/Runtimes\/iOS.simruntime\/Contents\/Resources\/RuntimeRoot\/usr\/lib\/dyld_sim", "name" : "dyld_sim" }, { "source" : "P", "arch" : "x86_64", "base" : 4403331072, "size" : 442368, "uuid" : "71febccd-d9dc-3599-9971-2b3407c588a8", "path" : "\/usr\/lib\/dyld", "name" : "dyld" }, { "source" : "P", "arch" : "x86_64", "base" : 140703998795776, "size" : 229376, "uuid" : "8cc28466-fd2f-3c80-9834-9525b7beac19", "path" : "\/usr\/lib\/system\/libsystem_kernel.dylib", "name" : "libsystem_kernel.dylib" }, { "source" : "P", "arch" : "x86_64", "base" : 140703999160320, "size" : 49144, "uuid" : "b5454e27-e8c7-3fdb-b77f-714f1e82e70b", "path" : "\/usr\/lib\/system\/libsystem_pthread.dylib", "name" : "libsystem_pthread.dylib" }, { "source" : "P", "arch" : "x86_64", "base" : 4404084736, "CFBundleShortVersionString" : "616+", "CFBundleIdentifier" : "com.apple.JavaScriptCore", "size" : 23248896, "uuid" : "619f9002-c57d-335e-98e1-c5a00cf272f6", "path" : "\/Volumes\/VOLUME\/*\/JavaScriptCore.framework\/JavaScriptCore", "name" : "JavaScriptCore", "CFBundleVersion" : "616.1.5+" } ], "sharedCache" : { "base" : 140703128616960, "size" : 2997714944, "uuid" : "fe41a70c-87d3-33f5-b1b6-742ab2f0d333" }, "vmSummary" : "ReadOnly portion of Libraries: Total=984.5M resident=0K(0%) swapped_out_or_unallocated=984.5M(100%)\nWritable regions: Total=9.0G written=0K(0%) resident=0K(0%) swapped_out=0K(0%) unallocated=9.0G(100%)\n\n VIRTUAL REGION \nREGION TYPE SIZE COUNT (non-coalesced) \n=========== ======= ======= \nAccelerate framework 128K 1 \nActivity Tracing 256K 1 \nCG raster data 1956K 38 \nColorSync 84K 6 \nCoreAnimation 468K 27 \nFoundation 16K 1 \nIOSurface 6272K 2 \nJS JIT generated code 1.0G 3 \nKernel Alloc Once 8K 1 \nMALLOC 664.4M 123 \nMALLOC guard page 48K 9 \nMALLOC_MEDIUM (reserved) 2.7G 24 reserved VM address space (unallocated)\nMALLOC_NANO (reserved) 384.0M 1 reserved VM address space (unallocated)\nSTACK GUARD 56.0M 9 \nStack 12.1M 9 \nVM_ALLOCATE 80K 16 \nWebKit Malloc 227.9M 5 \nWebKit Malloc (reserved) 4.0G 2 reserved VM address space (unallocated)\n__DATA 13.8M 505 \n__DATA_CONST 47.0M 505 \n__DATA_DIRTY 26K 12 \n__FONT_DATA 4K 1 \n__LINKEDIT 450.1M 46 \n__OBJC_RO 28.0M 1 \n__OBJC_RW 882K 1 \n__TEXT 534.4M 513 \ndyld private memory 1280K 2 \nmapped file 324.1M 121 \nshared memory 16K 1 \n=========== ======= ======= \nTOTAL 10.4G 1986 \nTOTAL, minus reserved VM space 3.3G 1986 \n", "legacyInfo" : { "threadTriggered" : { "queue" : "com.apple.main-thread" } }, "trialInfo" : { "rollouts" : [ { "rolloutId" : "607844aa04477260f58a8077", "factorPackIds" : { "SIRI_MORPHUN_ASSETS" : "6103050cbfe6dc472e1c982a" }, "deploymentId" : 240000066 }, { "rolloutId" : "61301e3a61217b3110231469", "factorPackIds" : { "SIRI_FIND_MY_CONFIGURATION_FILES" : "6348493aa52bb16adc4e4d06" }, "deploymentId" : 240000023 } ], "experiments" : [ ] } }

<rdar://problem/106199360>

This could be caused by a preceding test.

(In reply to Alexey Proskuryakov from comment #4) > This could be caused by a preceding test. I attempted to replicate with a test list and was still unable to replicate a crash. They continued to show as failures. I assigned to Simon, as his commit 260976@main had to do with scrolling to see if he can isolate why this is happening.

Pull request: https://github.com/WebKit/WebKit/pull/11501

Test gardening commit 261644@main (fc15c8ccddae): <https://commits.webkit.org/261644@main> Reviewed commits have been landed. Closing PR #11501 and removing active labels.

Pull request: https://github.com/WebKit/WebKit/pull/11577

Committed 261757@main (ec945fa4fae1): <https://commits.webkit.org/261757@main> Reviewed commits have been landed. Closing PR #11577 and removing active labels.