[Webkit-unassigned] [Bug 179200] New: ASSERTION FAILED: isMainThread() : UNEXPECTEDLY EXITED WebKitLegacy.RenderInContextSnapshot

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=179200

            Bug ID: 179200
           Summary: ASSERTION FAILED: isMainThread() : UNEXPECTEDLY EXITED
                    WebKitLegacy.RenderInContextSnapshot
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Web Inspector
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: jlewis3 at apple.com
                CC: inspector-bugzilla-changes at group.apple.com,
                    joepeck at webkit.org

WebKitLegacy.RenderInContextSnapshot is failing on iOS Simulator Debug consistently.

This most likely started with https://trac.webkit.org/changeset/208240/webkit as this was committed around the time of the first assertion failure: 
https://build.webkit.org/builders/Apple%20iOS%2011%20Simulator%20Debug%20WK2%20%28Tests%29/builds/764

UNEXPECTEDLY EXITED WebKitLegacy.RenderInContextSnapshot
2017-11-01 12:56:20.089 TestWebKitAPI[53126:59098013] Loading file:///Volumes/Data/slave/ios-simulator-11-debug-tests-wk2/build/WebKitBuild/Debug-iphonesimulator/TestWebKitAPI.resources/large-red-square-image.html
ASSERTION FAILED: isMainThread()
/Volumes/Data/slave/ios-simulator-11-debug/build/Source/WebCore/inspector/InspectorInstrumentation.h(1389) : static WebCore::InstrumentingAgents &WebCore::InspectorInstrumentation::instrumentingAgentsForPage(WebCore::Page &)
1   0x10cc676fd WTFCrash
2   0x11cc5457d WebCore::InspectorInstrumentation::instrumentingAgentsForPage(WebCore::Page&)
3   0x11cc54480 WebCore::InspectorInstrumentation::instrumentingAgentsForPage(WebCore::Page*)
4   0x11cdfe06d WebCore::InspectorInstrumentation::instrumentingAgentsForFrame(WebCore::Frame&)
5   0x11d860365 WebCore::InspectorInstrumentation::didReceiveResourceResponse(WebCore::Frame&, unsigned long, WebCore::DocumentLoader*, WebCore::ResourceResponse const&, WebCore::ResourceLoader*)
6   0x11d8fa432 WebCore::ResourceLoadNotifier::dispatchDidReceiveResponse(WebCore::DocumentLoader*, unsigned long, WebCore::ResourceResponse const&, WebCore::ResourceLoader*)
7   0x11d8fa390 WebCore::ResourceLoadNotifier::didReceiveResponse(WebCore::ResourceLoader*, WebCore::ResourceResponse const&)
8   0x11d900848 WebCore::ResourceLoader::didReceiveResponse(WebCore::ResourceResponse const&)
9   0x11d913e79 WebCore::SubresourceLoader::didReceiveResponse(WebCore::ResourceResponse const&)
10  0x11d901422 WebCore::ResourceLoader::didReceiveResponseAsync(WebCore::ResourceHandle*, WebCore::ResourceResponse&&)
11  0x11df0e5d7 WebCore::ResourceHandle::didReceiveResponse(WebCore::ResourceResponse&&)
12  0x11c265ae0 -[WebCoreResourceHandleAsOperationQueueDelegate connection:didReceiveResponse:]::$_3::operator()()
13  0x11c2656b9 invocation function for block in -[WebCoreResourceHandleAsOperationQueueDelegate connection:didReceiveResponse:]::$_3::operator void () block_pointer() const
14  0x1174b1273 _dispatch_call_block_and_release
15  0x1174b22b5 _dispatch_client_callout
16  0x1174bc496 _dispatch_main_queue_callback_4CF
17  0x116d42ef9 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__
18  0x116d07662 __CFRunLoopRun
19  0x116d06a89 CFRunLoopRunSpecific
20  0x116043e5e -[NSRunLoop(NSRunLoop) runMode:beforeDate:]
21  0x10b5ffe73 TestWebKitAPI::Util::run(bool*)
22  0x10b57df4e TestWebKitAPI::WebKitLegacy_RenderInContextSnapshot_Test::TestBody()
23  0x10b68557a testing::Test::Run()
24  0x10b68603d testing::internal::TestInfoImpl::Run()
25  0x10b68708d testing::TestCase::Run()
26  0x10b68d10b testing::internal::UnitTestImpl::RunAllTests()
27  0x10b68cd89 testing::UnitTest::Run()
28  0x10b58b35c TestWebKitAPI::TestsController::run(int, char**)
29  0x10b65a9a0 main
30  0x117526d81 start

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.webkit.org/pipermail/webkit-unassigned/attachments/20171102/02dad86f/attachment.html>