Bug 191707 - [ iOS WK2 ] Layout Test imported/w3c/web-platform-tests/webrtc/simplecall.https.html is flaky crashing
Summary: [ iOS WK2 ] Layout Test imported/w3c/web-platform-tests/webrtc/simplecall.htt...
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: Tools / Tests (show other bugs)
Version: WebKit Nightly Build
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Nobody
URL:
Keywords: InRadar
: 193674 195433 (view as bug list)
Depends on:
Blocks:
 
Reported: 2018-11-15 13:22 PST by Truitt Savell
Modified: 2019-03-20 17:20 PDT (History)
7 users (show)

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Description Truitt Savell 2018-11-15 13:22:12 PST 
The following layout test is flaky on iOS WK2

imported/w3c/web-platform-tests/webrtc/simplecall.https.html

Probable cause:

This test has started crashing recently. We need to find the regression point. 

Flakiness Dashboard:

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=imported%2Fw3c%2Fweb-platform-tests%2Fwebrtc%2Fsimplecall.https.html

Log:
https://build.webkit.org/results/Apple%20iOS%2012%20Simulator%20Release%20WK2%20(Tests)/r238223%20(976)/imported/w3c/web-platform-tests/webrtc/simplecall.https-crash-log.txt

Excerpt:
Application Specific Information:
CRASHING TEST: imported/mozilla/svg/smil/style/anim-css-fontsize-1-from-to-px-px-expected.svg
CoreSimulator 572.2 - Device: Managed 3 - Runtime: iOS 12.0 (16A366) - DeviceType: iPhone SE

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   com.apple.CoreFoundation      	0x000000010373b140 CFBasicHashRemoveValue + 800
1   com.apple.CoreFoundation      	0x00000001036044f8 CFDictionaryRemoveValue + 152
2   com.apple.VideoToolbox        	0x00000001104b9fe7 VTPixelTransferSessionTransferImage + 5581
3   com.apple.VideoToolbox        	0x0000000110522814 VTPixelBufferConformerCopyConformedPixelBuffer + 2068
4   com.apple.WebCore             	0x000000010bf5b46f WebCore::PixelBufferConformerCV::convert(__CVBuffer*) + 111 (PixelBufferConformerCV.cpp:152)
5   com.apple.WebCore             	0x000000010acfcd09 WebCore::RealtimeOutgoingVideoSourceCocoa::convertToYUV(__CVBuffer*) + 233 (RealtimeOutgoingVideoSourceCocoa.mm:49)
6   com.apple.WebCore             	0x000000010bfc5d10 WebCore::RealtimeOutgoingVideoSourceCocoa::sampleBufferUpdated(WebCore::MediaStreamTrackPrivate&, WebCore::MediaSample&) + 368 (RetainPtr.h:248)
7   com.apple.WebCore             	0x000000010bfa4dc7 WebCore::MediaStreamTrackPrivate::forEachObserver(WTF::Function<void
Comment 1 Radar WebKit Bug Importer 2018-11-15 13:22:42 PST 
<rdar://problem/46105847>
Comment 2 Ryan Haddad 2018-11-16 11:30:57 PST 
This test was recently updated as part of https://trac.webkit.org/changeset/237773/webkit
Comment 3 Alexey Proskuryakov 2019-01-22 14:05:44 PST 
*** Bug 193674 has been marked as a duplicate of this bug. ***
Comment 4 Ryan Haddad 2019-03-11 22:44:53 PDT 
This test is crashing more frequently on iOS sim EWS bots after I skipped imported/w3c/web-platform-tests/webrtc/simplecall-no-ssrcs.https.html for https://bugs.webkit.org/show_bug.cgi?id=195433
Comment 5 Shawn Roberts 2019-03-12 09:40:10 PDT 
*** Bug 195433 has been marked as a duplicate of this bug. ***
Comment 6 Ryan Haddad 2019-03-20 17:20:11 PDT 
Skipped it and updated bug number in https://trac.webkit.org/changeset/243261/webkit