[Webkit-unassigned] [Bug 196781] New: [iOS Sim Debug] ASSERTION FAILED: m_downloads.isEmpty() Layout Test http/tests/websocket/tests/hybi/network-process-crash-error.html is a flaky crash
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Wed Apr 10 14:04:14 PDT 2019
https://bugs.webkit.org/show_bug.cgi?id=196781
Bug ID: 196781
Summary: [iOS Sim Debug] ASSERTION FAILED:
m_downloads.isEmpty() Layout Test
http/tests/websocket/tests/hybi/network-process-crash-
error.html is a flaky crash
Product: WebKit
Version: WebKit Nightly Build
Hardware: Unspecified
OS: Unspecified
Status: NEW
Severity: Normal
Priority: P2
Component: Tools / Tests
Assignee: webkit-unassigned at lists.webkit.org
Reporter: sroberts at apple.com
CC: lforschler at apple.com
The following layout test is flaky on iOS Simulator Debug
http/tests/websocket/tests/hybi/network-process-crash-error.html
Probable cause:
Test has been crashing on its available history on dashboard. Layout results show an Assertion failure. Looking at bot logs there are no crash logs during the times it is crashing.
Found through local testing that if http/tests/download/anchor-load-after-download.html is run before http/tests/websocket/tests/hybi/network-process-crash-error.html it will crash 100% of the time on current revisions all the way down to r240541. It will pass on r240469. In that range https://trac.webkit.org/changeset/240530/webkit unskipped the test, and turned on support for a feature in iOS. I am unsure if this was a change from this revision, or uncovering an old bug. There are some radars for this crash log which I will like in the radar I create. I will also attach the full crash log from the local crash there as well.
reproduced locally with:
run-webkit-tests http/tests/download/anchor-load-after-download.html http/tests/websocket/tests/hybi/network-process-crash-error.html --ios-simulator --debug --child-process 1
Flakiness Dashboard:
https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=http%2Ftests%2Fwebsocket%2Ftests%2Fhybi%2Fnetwork-process-crash-error.html
Assertion:
https://build.webkit.org/results/Apple%20iOS%2012%20Simulator%20Debug%20WK2%20(Tests)/r244108%20(3228)/http/tests/websocket/tests/hybi/network-process-crash-error-crash-log.txt
ASSERTION FAILED: m_downloads.isEmpty()
/Volumes/Data/slave/ios-simulator-12-debug/build/Source/WebKit/UIProcess/Downloads/DownloadProxyMap.cpp(53) : WebKit::DownloadProxyMap::~DownloadProxyMap()
1 0x10899bb59 WTFCrash
2 0x10d95b18b WTFCrashWithInfo(int, char const*, char const*, int)
3 0x10e5cc1c5 WebKit::DownloadProxyMap::~DownloadProxyMap()
4 0x10e5cc375 WebKit::DownloadProxyMap::~DownloadProxyMap()
5 0x10e5d1818 WebKit::NetworkProcessProxy::~NetworkProcessProx
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