JVM crash when closing MediaDriver after failed close of Aeron client.

[aptdevel]

Hello,

I am experiencing a JVM crash when closing the MediaDriver, which appears to be related to a previous attempt to close the Aeron client that failed due to thread interruption.

I am using Aeron 1.13.0 with Oracle JDK 1.8.0_191 on Linux.

Here is a short example that crashes:

import io.aeron.Aeron;
import io.aeron.Publication;
import io.aeron.driver.MediaDriver;

public class AeronCrashOnDriverCloseAfterInterruptBeforePublisherClose {
    public static void main(String[] args) {
        final MediaDriver.Context driverCtx = new MediaDriver.Context();
        // For cleanliness; not relevant.
        driverCtx.warnIfDirectoryExists(false).dirDeleteOnStart(true);
        
        final Aeron.Context clientCtx = new Aeron.Context();
        
        try (MediaDriver driver = MediaDriver.launch(driverCtx);
            Aeron client = Aeron.connect(clientCtx);
            Publication pub = client.addPublication("aeron:ipc", 42))
        {
            // Comment this out and program exits normally.
            Thread.currentThread().interrupt();
        }
    }
}

The Publication#close() doesn't need to fail for the crash to happen. The determining factor seems to be whether the Aeron#close() was interrupted. Here is a slightly more verbose example with a successful Publication close:

import io.aeron.Aeron;
import io.aeron.Publication;
import io.aeron.driver.MediaDriver;

public class AeronCrashOnDriverCloseAfterInterruptBeforeClientClose {
    public static void main(String[] args) {
        final MediaDriver.Context driverCtx = new MediaDriver.Context();
        // For cleanliness; not relevant.
        driverCtx.warnIfDirectoryExists(false).dirDeleteOnStart(true);
        
        final Aeron.Context clientCtx = new Aeron.Context();
        
        final MediaDriver driver = MediaDriver.launch(driverCtx);
        try {
            final Aeron client = Aeron.connect(clientCtx);
            try {
                // Need to add a Publication, or the crash will not happen.
                final Publication pub = client.addPublication("aeron:ipc", 42);
                pub.close();
                
                // Comment this out and program exits normally.
                Thread.currentThread().interrupt();
            } finally {
                // This will throw AeronException because of interrupt flag.
                // (Publication would sneaky-throw InterruptedException.)
                client.close();
            }
        } finally {
            // This will cause JVM to crash if the Aeron#close() failed.
            driver.close();
        }
    }
}

I can provide an hs_err log if that helps.

Thank you.

[aptdevel]

Thank you for the quick turnaround.