Bug#1034392: Acknowledgement (tomcat9: jstack/jcmd broken for non-root users with tomcat9+jdk11 or greater)

[Per Lundberg]

Hi,

A short update on this. This is a known regression in more recent 
versions of Java: https://bugs.openjdk.org/browse/JDK-8226919

One of my colleagues (thanks, Sebastian!) managed to workaround this by 
patching the JDK 17 sources to make it use plain /tmp in this case (when 
ns_pid == pid), and also added some better error handling in case this 
fails.

We are currently working on getting this submitted upstream to OpenJDK, 
but I wanted to share it with you as well. One option would be to 
include this in Debian's set of local JDK patches 
(https://salsa.debian.org/openjdk-team/openjdk/-/tree/master/debian/patches), 
but I don't know how conservative the project is re. fixes like this? 
I'll leave this up to the debian-java maintainers to decide.

Best regards,
Per
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