Bug 206785

Summary: REGRESSION (r254964-r254970?): Catalina Debug JSC bot timing out while running tests
Product: WebKit Reporter: Ryan Haddad <ryanhaddad>
Component: New BugsAssignee: Nobody <webkit-unassigned>
Status: RESOLVED FIXED    
Severity: Normal CC: keith_miller, webkit-bot-watchers-bugzilla, webkit-bug-importer, ysuzuki
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   

Description Ryan Haddad 2020-01-24 17:05:06 PST 
The Catalina Debug JSC bot is going 20 minutes without output after running tests for over 3 hours, which causes the test run to get killed:

...
...
Running mozilla-tests.yaml/js1_6/String/regress-306591.js.mozilla-dfg-eager-no-cjit-validate-phases
Running mozilla-tests.yaml/js1_6/String/regress-306591.js.mozilla
Running mozilla-tests.yaml/js1_6/String/regress-306591.js.mozilla-ftl-eager-no-cjit-validate-phases

command timed out: 1200 seconds without output running ['perl', './Tools/Scripts/run-javascriptcore-tests', '--no-build', '--no-fail-fast', '--json-output=jsc_results.json', '--debug', '--builder-name', 'Apple-Catalina-Debug-JSC-Tests', '--build-number', '184', '--buildbot-worker', 'bot638', '--buildbot-master', 'build.webkit.org', '--report', 'https://results.webkit.org'], attempting to kill


https://build.webkit.org/builders/Apple-Catalina-Debug-JSC-Tests/builds/191
Comment 1 Ryan Haddad 2020-01-24 17:05:42 PST 
The last successful run was with r254964. The first failing run was with r254970.
Comment 2 Ryan Haddad 2020-01-24 17:09:23 PST 
Here are the two JSC related changes in this range:

[JSC] Bits from Operand should fit in bits reserved in AbstractHeap's Payload
​https://bugs.webkit.org/show_bug.cgi?id=206619
https://trac.webkit.org/changeset/254968/webkit

It should be possible to build JavaScriptCore with LLVM Source-based Code Coverage, run the tests and see the coverage data
​https://bugs.webkit.org/show_bug.cgi?id=206389
Comment 3 Yusuke Suzuki 2020-01-24 17:22:07 PST 
Committed r255110: <https://trac.webkit.org/changeset/255110>
Comment 4 Radar WebKit Bug Importer 2020-01-24 17:23:13 PST 
<rdar://problem/58887459>