[Webkit-unassigned] [Bug 222749] [ macOs Wk1 ] http/wpt/filereader/filereader-stop.html is a flakey text failure

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=222749

--- Comment #3 from Robert Jenner <Jenner at apple.com> ---
This is a new test that appears to be flakey text failing in Catalina and Big Sur in Wk1 since it was introduced.

I was able to reproduce a crash at tip of tree with the following test:

run-webkit-test http/wpt/filereader/filereader-stop.html --iterations 100 -f -1

Crash received was:
Process:               DumpRenderTree [97890]
Path:                  /Volumes/VOLUME/*/DumpRenderTree
Identifier:            DumpRenderTree
Version:               0
Code Type:             X86-64 (Native)
Parent Process:        Python [97668]
Responsible:           iTerm2 [1092]
User ID:               501

Date/Time:             2021-03-04 10:46:38.779 -0800
OS Version:            macOS 11.3 (20E175)
Report Version:        12
Bridge OS Version:     5.3 (18P4518b)
Anonymous UUID:        3BACBEA7-EFA8-915D-2B89-E1106E331002

Sleep/Wake UUID:       1CDC448B-8A6C-4521-B42B-DB3795C20553

Time Awake Since Boot: 30000 seconds
Time Since Wake:       7000 seconds

System Integrity Protection: enabled

Crashed Thread:        0  Dispatch queue: com.apple.main-thread

Exception Type:        EXC_BREAKPOINT (SIGTRAP)
Exception Codes:       0x0000000000000002, 0x0000000000000000
Exception Note:        EXC_CORPSE_NOTIFY

Termination Signal:    Trace/BPT trap: 5
Termination Reason:    Namespace SIGNAL, Code 0x5
Terminating Process:   exc handler [97890]

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   com.apple.WebCore                   0x00000001073ed5b3 WTFCrashWithInfo(int, char const*, char const*, int) + 19
1   com.apple.WebCore                   0x00000001087e1af6 WebCore::FileReader::fireEvent(WTF::AtomString const&) + 486
2   com.apple.WebCore                   0x00000001087e79de WTF::Detail::CallableWrapper<WebCore::FileReader::didFail(WebCore::ExceptionCode)::$_15, void>::call() + 206
3   com.apple.WebCore                   0x00000001087e7ff6 WTF::Detail::CallableWrapper<WebCore::FileReader::enqueueTask(WTF::Function<void ()>&&)::$_16, void>::call() + 390
4   com.apple.WebCore                   0x000000010865e7e5 WebCore::EventLoop::run() + 197
5   com.apple.WebCore                   0x00000001086d5d51 WebCore::WindowEventLoop::didReachTimeToRun() + 17
6   com.apple.WebCore                   0x0000000108d1d7e6 WTF::Detail::CallableWrapper<WebCore::ThreadTimers::setSharedTimer(WebCore::SharedTimer*)::$_0, void>::call() + 198
7   com.apple.WebCore                   0x00000001071cdb0f WebCore::timerFired(__CFRunLoopTimer*, void*) + 31
8   com.apple.CoreFoundation            0x00007fff2049c129 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 20
9   com.apple.CoreFoundation            0x00007fff2049bc1d __CFRunLoopDoTimer + 927
10  com.apple.CoreFoundation            0x00007fff2049b77a __CFRunLoopDoTimers + 307
11  com.apple.CoreFoundation            0x00007fff20481dc3 __CFRunLoopRun + 1988
12  com.apple.CoreFoundation            0x00007fff20480f2c CFRunLoopRunSpecific + 563
13  DumpRenderTree                      0x0000000103c2e1d4 runTest(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) + 5541
14  DumpRenderTree                      0x0000000103c2c752 dumpRenderTree(int, char const**) + 2731
15  DumpRenderTree                      0x0000000103c2ec14 DumpRenderTreeMain(int, char const**) + 397
16  libdyld.dylib                       0x00007fff203a5e6d start + 1


I have attached the entire crashlog file to this bug as well.

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