The following test failed in the JDK16 CI:

jdk/jfr/startupargs/TestDumpOnExit.java

Here's a snippet from the log file:

Hello from test main
[3.037s][trace][jfr] JFR thread sampling done in 0.0000156 secs with 0 java 0 native samples
[3.053s][trace][jfr] JFR thread sampling done in 0.0000622 secs with 0 java 1 native samples
[3.054s][trace][jfr] JFR thread sampling done in 0.0000096 secs with 0 java 0 native samples
[3.071s][trace][jfr] JFR thread sampling done in 0.0000145 secs with 0 java 0 native samples
[3.083s][trace][jfr] JFR thread sampling done in 0.0000473 secs with 0 java 1 native samples
[3.084s][trace][jfr] JFR thread sampling done in 0.0000138 secs with 0 java 0 native samples
[3.099s][trace][jfr] JFR thread sampling done in 0.0000174 secs with 0 java 0 native samples
[3.114s][trace][jfr] JFR thread sampling done in 0.0000566 secs with 0 java 1 native samples
[3.114s][trace][jfr] JFR thread sampling done in 0.0000105 secs with 0 java 0 native samples
[3.130s][trace][jfr] JFR thread sampling done in 0.0000314 secs with 0 java 0 native samples
[3.146s][trace][jfr] JFR thread sampling done in 0.0004092 secs with 0 java 1 native samples
[3.146s][trace][jfr] JFR thread sampling done in 0.0000129 secs with 0 java 0 native samples
[3.161s][debug][jfr] Recording "1" (1) added chunk T:\\testoutput\\test-support\\jtreg_open_test_jdk_tier1_part3\\tmp\\2020_08_14_19_41_44_19632\\2020_08_14_19_41_44.jfr, current size=199946
[3.161s][trace][jfr] JFR thread sampling done in 0.0000156 secs with 0 java 0 native samples
[3.176s][trace][jfr] JFR thread sampling done in 0.0000555 secs with 0 java 1 native samples
[3.177s][trace][jfr] JFR thread sampling done in 0.0003992 secs with 1 java 0 native samples
[3.179s][trace][jfr] Updated thread sampler for java: 0 ms, native 20 ms
[3.179s][trace][jfr] Disenrolling thread sampler
[3.179s][info ][jfr] Stopped recording "1" (1). Reason "Dump on exit".
[3.193s][trace][jfr] JFR thread sampling done in 0.0004228 secs with 0 java 0 native samples
[3.229s][info ][jfr] Wrote recording "1" (1) to T:\\testoutput\\test-support\\jtreg_open_test_jdk_tier1_part3\\scratch\\0\\dumped.jfr
[3.229s][debug][jfr] Recording "1" (1) removed chunk T:\\testoutput\\test-support\\jtreg_open_test_jdk_tier1_part3\\tmp\\2020_08_14_19_41_44_19632\\2020_08_14_19_41_44.jfr, current size=0
[3.230s][debug][jfr] Repository chunk T:\\testoutput\\test-support\\jtreg_open_test_jdk_tier1_part3\\tmp\\2020_08_14_19_41_44_19632\\2020_08_14_19_41_44.jfr deleted
[3.230s][info ][jfr] Closed recording "1" (1)
[3.255s][info ][jfr] Removed repository T:\\testoutput\\test-support\\jtreg_open_test_jdk_tier1_part3\\tmp\\2020_08_14_19_41_44_19632
];
 stderr: []
 exitValue = -1073741819

java.lang.RuntimeException: Expected to get exit value of [0]

at jdk.test.lib.process.OutputAnalyzer.shouldHaveExitValue(OutputAnalyzer.java:457)
at jdk.jfr.startupargs.TestDumpOnExit.testDumponExit(TestDumpOnExit.java:100)
at jdk.jfr.startupargs.TestDumpOnExit.main(TestDumpOnExit.java:68)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
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)

JavaTest Message: Test threw exception: java.lang.RuntimeException: Expected to get exit value of [0]

JavaTest Message: shutting down test

STATUS:Failed.`main' threw exception: java.lang.RuntimeException: Expected to get exit value of [0]
----------rerun:(43/5099)*----------

Since this is a Tier1 failure I would normally start this
off as a P2. However, the only changeset in the build ID
that's running in the JDK16 CI is macOS specific so I'm
starting this off as a P3.

Also, this failure mode reminds me of one of the failure
sightings in JDK-8214685, but, as far as I know, this test
is not passing bad values.