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  1. JDK
  2. JDK-8239878

Bug in PrintEliminateAllocations code causes TestClhsdbJstackLock.java to fail

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    • Subcomponent:
    • Resolved In Build:
      b13
    • CPU:
      x86_64
    • OS:
      linux
    • Verification:
      Verified

      Description

      The following test failed in the JDK15 CI:

      serviceability/sa/TestClhsdbJstackLock.java

      Here's a snippet from the failing log:

      "Thread-0" #13 prio=5 tid=0x00007fc65c5e2800 nid=0x706b waiting on condition [0x00007fc6209a3000]
         java.lang.Thread.State: TIMED_WAITING (sleeping)
         JavaThread state: _thread_blocked
       - java.lang.Thread.sleep(long) @bci=0 (Interpreted frame)
       - LingeredAppWithLock.lockMethod(java.lang.Object) @bci=7, line=32 (Interpreted frame)
      - locked <0x++++ Eliminated: 1479 Allocate
      000000048f454230> ++++ Eliminated: 1321 Allocate
      (a java.lang.Class for LingeredAppWithLock)
       - LingeredAppWithLock.lambda$main$0() @bci=2, line=40 (Interpreted frame)
       - LingeredAppWithLock$$Lambda$1.run() @bci=0 (Interpreted frame)
       - java.lang.Thread.run() @bci=11, line=832 (Interpreted frame)

      Locked ownable synchronizers:
          - None

      <snip>

      ]
       exitValue = -1

       LingeredApp stdout: [];
       LingeredApp stderr: []
       LingeredApp exitValue = 0
      java.lang.RuntimeException: Test ERROR java.lang.RuntimeException: '^\\s+- locked <0x[0-9a-f]+> \\(a java\\.lang\\.Class for LingeredAppWithLock\\)$' missing from stdout/stderr

      at TestClhsdbJstackLock.main(TestClhsdbJstackLock.java:67)
      at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
      at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.base/java.lang.reflect.Method.invoke(Method.java:564)
      at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
      at java.base/java.lang.Thread.run(Thread.java:832)
      Caused by: java.lang.RuntimeException: '^\\s+- locked <0x[0-9a-f]+> \\(a java\\.lang\\.Class for LingeredAppWithLock\\)$' missing from stdout/stderr

      at jdk.test.lib.process.OutputAnalyzer.shouldMatch(OutputAnalyzer.java:306)
      at ClhsdbLauncher.runCmd(ClhsdbLauncher.java:164)
      at ClhsdbLauncher.run(ClhsdbLauncher.java:216)
      at TestClhsdbJstackLock.main(TestClhsdbJstackLock.java:63)
      ... 6 more

      JavaTest Message: Test threw exception: java.lang.RuntimeException: Test ERROR java.lang.RuntimeException: '^\\s+- locked <0x[0-9a-f]+> \\(a java\\.lang\\.Class for LingeredAppWithLock\\)$' missing from stdout/stderr

      JavaTest Message: shutting down test

      STATUS:Failed.`main' threw exception: java.lang.RuntimeException: Test ERROR java.lang.RuntimeException: '^\\s+- locked <0x[0-9a-f]+> \\(a java\\.lang\\.Class for LingeredAppWithLock\\)$' missing from stdout/stderr
      ----------rerun:(32/5791)*----------


      The search pattern is:

      '^\\s+- locked <0x[0-9a-f]+> \\(a java\\.lang\\.Class for LingeredAppWithLock\\)$'

      and the output line that should have matched is:

      - locked <0x++++ Eliminated: 1479 Allocate
      000000048f454230> ++++ Eliminated: 1321 Allocate
      (a java.lang.Class for LingeredAppWithLock)

      The "++++ Eliminated: 1479 Allocate" and "++++ Eliminated: 1321 Allocate"
      were interleaved in the thread dump output and caused the
      pattern match to fail.


      Update: Bumping this from P4 -> P2 since this failure mode has now
      appeared in a Tier1 CI job set.

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              Assignee:
              neliasso Nils Eliasson
              Reporter:
              dcubed Daniel Daugherty
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                Updated:
                Resolved: