Test failure on MacOS/AArch64

[Andrew Haley]

test/hotspot/jtreg/gc/shenandoah/mxbeans/TestPauseNotifications.java

Timeout information:
--- Timeout information end.
elapsed time (seconds): 511.187

test TreeTest.test4(): failure
java.lang.RuntimeException: Input/output error
	at java.base/java.lang.ProcessHandleImpl$Info.info0(Native Method)
	at java.base/java.lang.ProcessHandleImpl$Info.info(ProcessHandleImpl.java:587)
	at java.base/java.lang.ProcessHandleImpl.info(ProcessHandleImpl.java:504)
	at TreeTest.test4(TreeTest.java:376)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)

I have more info if you're interested.

-- 
Andrew Haley  (he/him)
Java Platform Lead Engineer
Red Hat UK Ltd. <https://www.redhat.com>
https://keybase.io/andrewhaley
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