The following test failed in the JDK21 CI:

containers/docker/TestMemoryAwareness.java

Here's a snippet from the log file:

maximum number of tasks: unlimited
[0.110s][trace][os,container] Path to /pids.current is /sys/fs/cgroup/pids/pids.current
[0.110s][trace][os,container] Path to /memory.usage_in_bytes is /sys/fs/cgroup/memory/memory.usage_in_bytes
[0.110s][trace][os,container] Current number of tasks is: 13
current number of tasks: 13

KVM virtualization detected
[0.110s][trace][os,container] Memory Usage is: 27934720
Steal ticks since vm start: 0
Steal ticks percentage since vm start: 0.000
];
 stderr: []
 exitValue = 0

java.lang.RuntimeException: 'memory_limit_in_bytes:.*512000 k' missing from stdout/stderr
at jdk.test.lib.process.OutputAnalyzer.shouldMatch(OutputAnalyzer.java:340)
at TestMemoryAwareness.testMemorySwapNotSupported(TestMemoryAwareness.java:175)
at TestMemoryAwareness.main(TestMemoryAwareness.java:80)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
at java.base/java.lang.reflect.Method.invoke(Method.java:578)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:125)
at java.base/java.lang.Thread.run(Thread.java:1623)

JavaTest Message: Test threw exception: java.lang.RuntimeException: 'memory_limit_in_bytes:.*512000 k' missing from stdout/stderr
JavaTest Message: shutting down test