[Webkit-unassigned] [Bug 221904] New: Flaky JSC test: stress/atomic-increment-bigint64.js

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=221904

            Bug ID: 221904
           Summary: Flaky JSC test: stress/atomic-increment-bigint64.js
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mcatanzaro at gnome.org

JSC stress test stress/atomic-increment-bigint64.js has been flaky since Wednesday last week. So far it has failed only on x86_64, but that might be coincidence. I have recorded failures on Wednesday, Thursday, Saturday, and Sunday.

The test was added in r272341, on Feb 3, but strangely I don't have any recorded failures prior to Feb 10. That could be luck.

The failure looks like this:

stress/atomic-increment-bigint64.js.bytecode-cache: ../../.helpers/bytecode-cache-test-helper.sh: line 28: 3922422 Aborted                 (core dumped) /var/lib/jenkins/workspace/WebKit-JSC/label/x86_64/WebKitBuild/Release/bin/jsc atomic-increment-bigint64.js --useFTLJIT=false --useFunctionDotArguments=true --validateExceptionChecks=true --useDollarVM=true --maxPerThreadStackUsage=1572864 --useFTLJIT=true
stress/atomic-increment-bigint64.js.bytecode-cache: Command '/var/lib/jenkins/workspace/WebKit-JSC/label/x86_64/WebKitBuild/Release/bin/jsc atomic-increment-bigint64.js --useFTLJIT=false --useFunctionDotArguments=true --validateExceptionChecks=true --useDollarVM=true --maxPerThreadStackUsage=1572864 --useFTLJIT=true' failed
stress/atomic-increment-bigint64.js.bytecode-cache: ERROR: Unexpected exit code: 134
FAIL: stress/atomic-increment-bigint64.js.bytecode-cache

134 - 128 = 6 which is SIGABRT. Let's see if I can get a backtrace....

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