225371 2021-05-04 16:34:15 -0700 REGRESSION (r276870): ASSERTION FAILED: !m_impl || !m_shouldEnableAssertions || m_impl->wasConstructedOnMainThread() == isMainThread() under WebCore::MediaPlayerPrivateAVFoundationObjC::createAVPlayer 2021-05-06 16:15:14 -0700 1 1 1 Unclassified WebKit Media WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED https://bugs.webkit.org/show_bug.cgi?id=225254 https://bugs.webkit.org/show_bug.cgi?id=225492 InRadar P2 Normal --- 1 ryanhaddad jer.noble ap eric.carlson ews-watchlist glenn jer.noble philipj sergio webkit-bot-watchers-bugzilla webkit-bug-importer oldest_to_newest 1756712 0 ryanhaddad 2021-05-04 16:34:15 -0700 The following API tests are asserting on iOS Simulator bots: TestWebKitAPI.WebKitLegacy.AudioSessionCategoryIOS TestWebKitAPI.WebKitLegacy.PreemptVideoFullscreen TestWebKitAPI.WebKitLegacy.ScrollingDoesNotPauseMedia ASSERTION FAILED: !m_impl || !m_shouldEnableAssertions || m_impl->wasConstructedOnMainThread() == isMainThread() /Volumes/Data/worker/ios-simulator-14-debug/build/WebKitBuild/Debug-iphonesimulator/usr/local/include/wtf/WeakPtr.h(109) : T *WTF::WeakPtr<WebCore::MediaPlayerPrivateAVFoundationObjC, WTF::EmptyCounter>::operator->() const [T = WebCore::MediaPlayerPrivateAVFoundationObjC, Counter = WTF::EmptyCounter] 1 0x1140a40b9 WTFCrash 2 0x12c35128b WTFCrashWithInfo(int, char const*, char const*, int) 3 0x12c436287 WTF::WeakPtr<WebCore::MediaPlayerPrivateAVFoundationObjC, WTF::EmptyCounter>::operator->() const 4 0x12c7620aa WebCore::MediaPlayerPrivateAVFoundationObjC::createAVPlayer()::$_4::operator()(CMTime) const 5 0x12c762069 invocation function for block in WebCore::MediaPlayerPrivateAVFoundationObjC::createAVPlayer() 6 0x16598cd13 -[AVPeriodicTimebaseObserver _effectiveRateChanged] 7 0x16598e0d9 __AVTimebaseObserver_timebaseNotificationCallback_block_invoke 8 0x1128d732f _dispatch_call_block_and_release 9 0x1128d8508 _dispatch_client_callout 10 0x1128e4ff7 _dispatch_main_queue_callback_4CF 11 0x11163adab __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ 12 0x11163562e __CFRunLoopRun 13 0x1116346c6 CFRunLoopRunSpecific 14 0x1110227b9 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] 15 0x10c42b0de TestWebKitAPI::Util::run(bool*) 16 0x10bbe1fad TestWebKitAPI::WebKitLegacy_AudioSessionCategoryIOS_Test::TestBody() 17 0x10c5e6bf4 void testing::internal::HandleSehExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::*)(), char const*) 18 0x10c5bd46b void testing::internal::HandleExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::*)(), char const*) 19 0x10c5bd3a3 testing::Test::Run() 20 0x10c5be0e4 testing::TestInfo::Run() 21 0x10c5bf205 testing::TestSuite::Run() 22 0x10c5cda6a testing::internal::UnitTestImpl::RunAllTests() 23 0x10c5eb4d4 bool testing::internal::HandleSehExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool>(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::*)(), char const*) 24 0x10c5cd42b bool testing::internal::HandleExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool>(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::*)(), char const*) 25 0x10c5cd2fd testing::UnitTest::Run() 26 0x10c3d35f1 RUN_ALL_TESTS() 27 0x10c3d3582 TestWebKitAPI::TestsController::run(int, char**) 28 0x10c58f1c5 main 29 0x112961409 start Child process terminated with signal 11: Segmentation fault https://results.webkit.org/?suite=api-tests&suite=api-tests&suite=api-tests&test=TestWebKitAPI.WebKitLegacy.AudioSessionCategoryIOS&test=TestWebKitAPI.WebKitLegacy.PreemptVideoFullscreen&test=TestWebKitAPI.WebKitLegacy.ScrollingDoesNotPauseMedia 1756713 1 webkit-bug-importer 2021-05-04 16:34:59 -0700 <rdar://problem/77531907> 1756729 2 jer.noble 2021-05-04 17:06:51 -0700 Looks like a webThread vs. mainThread problem. :-/ 1756792 3 427730 jer.noble 2021-05-04 21:00:20 -0700 Created attachment 427730 Patch 1757169 4 427819 jer.noble 2021-05-05 16:42:33 -0700 Created attachment 427819 Patch 1757638 5 ews-feeder 2021-05-06 14:17:01 -0700 Committed r277122 (237418@main): <https://commits.webkit.org/237418@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 427819. 427730 2021-05-04 21:00:20 -0700 2021-05-05 16:42:31 -0700 Patch bug-225371-20210504210020.patch text/plain 5034 jer.noble U3VidmVyc2lvbiBSZXZpc2lvbjogMjc2OTczCmRpZmYgLS1naXQgYS9Tb3VyY2UvV2ViQ29yZS9D aGFuZ2VMb2cgYi9Tb3VyY2UvV2ViQ29yZS9DaGFuZ2VMb2cKaW5kZXggYjBlOTgwNDYyMGU3OGU2 MTAwM2EyMTIyYzM0OTNiMzI1ZDFhYzQ3MS4uNDk1NWVhZjZjY2Y1NWMyMGU5OTk5NTY3NjkyMDE1 MjlmMjkxZmMyZiAxMDA2NDQKLS0tIGEvU291cmNlL1dlYkNvcmUvQ2hhbmdlTG9nCisrKyBiL1Nv dXJjZS9XZWJDb3JlL0NoYW5nZUxvZwpAQCAtMSwzICsxLDIxIEBACisyMDIxLTA1LTA0ICBKZXIg Tm9ibGUgIDxqZXIubm9ibGVAYXBwbGUuY29tPgorCisgICAgICAgIFJFR1JFU1NJT04gKHIyNzY4 NzApOiBBU1NFUlRJT04gRkFJTEVEOiAhbV9pbXBsIHx8ICFtX3Nob3VsZEVuYWJsZUFzc2VydGlv bnMgfHwgbV9pbXBsLT53YXNDb25zdHJ1Y3RlZE9uTWFpblRocmVhZCgpID09IGlzTWFpblRocmVh ZCgpIHVuZGVyIFdlYkNvcmU6Ok1lZGlhUGxheWVyUHJpdmF0ZUFWRm91bmRhdGlvbk9iakM6OmNy ZWF0ZUFWUGxheWVyCisgICAgICAgIGh0dHBzOi8vYnVncy53ZWJraXQub3JnL3Nob3dfYnVnLmNn 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