195433 2019-03-07 13:58:30 -0800 [ iOS Sim ] Layout Test imported/w3c/web-platform-tests/webrtc/simplecall-no-ssrcs.https.html is a flaky crash 2019-03-12 09:40:10 -0700 1 1 1 Unclassified WebKit Tools / Tests WebKit Nightly Build Unspecified Unspecified RESOLVED DUPLICATE 191707 https://bugs.webkit.org/show_bug.cgi?id=191707 InRadar P2 Normal --- 1 sroberts webkit-unassigned lforschler ryanhaddad webkit-bot-watchers-bugzilla webkit-bug-importer youennf oldest_to_newest 1513698 0 sroberts 2019-03-07 13:58:30 -0800 The following layout test is failing on iOS Simulator imported/w3c/web-platform-tests/webrtc/simplecall-no-ssrcs.https.html Probable cause: Unable to find exact point of regression. Test is failing with the oldest revision I can spade which is r228106 Reproduced locally with: run-webkit-tests imported/w3c/web-platform-tests/webrtc/simplecall-no-ssrcs.https.html --iterations 500 -f --ios-simulator --exit-after-n-failures=5 Flakiness Dashboard: https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=imported%2Fw3c%2Fweb-platform-tests%2Fwebrtc%2Fsimplecall-no-ssrcs.https.html Crash log: https://build.webkit.org/results/Apple%20iOS%2012%20Simulator%20Release%20WK2%20(Tests)/r242586%20(3007)/imported/w3c/web-platform-tests/webrtc/simplecall-no-ssrcs.https-crash-log.txt Time Awake Since Boot: 700000 seconds System Integrity Protection: disabled Crashed Thread: 0 Dispatch queue: com.apple.main-thread Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000010 Exception Note: EXC_CORPSE_NOTIFY Termination Signal: Segmentation fault: 11 Termination Reason: Namespace SIGNAL, Code 0xb Terminating Process: exc handler [0] VM Regions Near 0x10: --> __TEXT 000000010747c000-000000010747d000 [ 4K] r-x/rwx SM=COW /Volumes/VOLUME/*/WebKit.framework/XPCServices/com.apple.WebKit.WebContent.xpc/com.apple.WebKit.WebContent.Development Application Specific Information: CRASHING TEST: imported/mozilla/svg/filters/filter-marked-line-09-expected.svg CoreSimulator 581.2 - Device: Managed 1 - Runtime: iOS 12.1 (16B91) - DeviceType: iPhone SE Thread 0 Crashed:: Dispatch queue: com.apple.main-thread 0 com.apple.CoreFoundation 0x0000000109bc20e0 CFBasicHashRemoveValue + 800 1 com.apple.CoreFoundation 0x0000000109a8d0e8 CFDictionaryRemoveValue + 152 2 com.apple.VideoToolbox 0x000000039f474fe7 VTPixelTransferSessionTransferImage + 5581 3 com.apple.VideoToolbox 0x000000039f4dd814 VTPixelBufferConformerCopyConformedPixelBuffer + 2068 4 com.apple.WebCore 0x0000000399494745 WebCore::PixelBufferConformerCV::convert(__CVBuffer*) + 117 (PixelBufferConformerCV.cpp:147) 5 com.apple.WebCore 0x00000003981c42b9 WebCore::RealtimeOutgoingVideoSourceCocoa::convertToYUV(__CVBuffer*) + 233 (RealtimeOutgoingVideoSourceCocoa.mm:49) 6 com.apple.WebCore 0x00000003994fbf5e WebCore::RealtimeOutgoingVideoSourceCocoa::sampleBufferUpdated(WebCore::MediaStreamTrackPrivate&, WebCore::MediaSample&) + 334 (RetainPtr.h:258) 7 com.apple.WebCore 0x00000003994dc117 WebCore::MediaStreamTrackPrivate::forEachObserver(WTF::Function<void (WebCore::MediaStreamTrackPrivate::Observer&)> const&) const + 727 (Atomics.h:247) 8 com.apple.WebCore 0x00000003994dcb76 WebCore::MediaStreamTrackPrivate::videoSampleAvailable(WebCore::MediaSample&) + 182 (MediaStreamTrackPrivate.cpp:241) 9 com.apple.WebCore 0x00000003994de7c7 WebCore::RealtimeMediaSource::forEachObserver(WTF::Function<void (WebCore::RealtimeMediaSource::Observer&)> const&) const + 727 (Atomics.h:247) 10 com.apple.WebCore 0x00000003994dea1b WebCore::RealtimeMediaSource::videoSampleAvailable(WebCore::MediaSample&) + 59 (RealtimeMediaSource.cpp:162) 11 com.apple.WebCore 0x0000000398a625a6 WebCore::CanvasCaptureMediaStreamTrack::Source::captureCanvas() + 86 (utility:896) 12 com.apple.WebCore 0x00000003993c1d4d WebCore::ThreadTimers::sharedTimerFiredInternal() + 173 (ThreadTimers.cpp:132) 13 com.apple.WebCore 0x00000003993e770f WebCore::timerFired(__CFRunLoopTimer*, void*) + 31 (MainThreadSharedTimerCF.cpp:75) 1513703 1 webkit-bug-importer 2019-03-07 14:03:29 -0800 <rdar://problem/48689482> 1513766 2 sroberts 2019-03-07 15:57:30 -0800 Failed with several revisions during testing. 242605, 242280, 242278, 240000, 23701, 228106 All revisions failed all 5 times during the test cycle within 100 iterations except for revision 228106 failed with only 1 crash. 1514949 3 ryanhaddad 2019-03-11 13:04:28 -0700 Skipped the test in https://trac.webkit.org/r242730 in an effort to speed up ios-sim EWS. 1515455 4 ryanhaddad 2019-03-12 09:25:22 -0700 Perhaps this can be duped to https://bugs.webkit.org/show_bug.cgi?id=191707 1515463 5 sroberts 2019-03-12 09:40:10 -0700 *** This bug has been marked as a duplicate of bug 191707 ***