The following code will produce the following output on MacOS:
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AsynchronousServerSocketChannel channel = AsynchronousServerSocketChannel.open(
            AsynchronousChannelGroup.withThreadPool(Executors.newCachedThreadPool(Thread::new)));
    System.out.println("Initial value: " + channel.getOption(StandardSocketOptions.SO_RCVBUF));
    System.out.println("Value to set: " + Integer.MAX_VALUE);
    channel.setOption(StandardSocketOptions.SO_RCVBUF, Integer.MAX_VALUE);
    System.out.println("Result value: " + channel.getOption(StandardSocketOptions.SO_RCVBUF));
}
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Output (jdk9b144):
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Initial value: 131072
Value to set: 2147483647
Result value: 65536
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Output (jdk9b142):
——————————————————————————
Initial value: 131072
Value to set: 2147483647
Result value: 6710884
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As you can see b144 returns the value that is smaller then the initial value despite the fact that we tried to set the value that is bigger then the initial value. Seems, this is incorrect.