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When chromium is running I see processes in /proc/[PID]/ where some of the namespace links inside /proc/[PID]/ns/do link to nothing, that is, they cannot be readlinked and return errors instead. Also an ls -l throws error for them. This applies only to some namespaces, such as the network namespace. This happens with superuser rights inside the root namespaces looking at /proc/[PID]/ns/net for some chromium-related processes.

The system is a recently updated Debian 9 Stretch.

Can someone please explain how it is possible that a process can be dejoined from certain namespaces completely? I've never seen anything being mentioned in the Linux namespace man pages, so how is this possible and what's the meaning?

  • I don't know, but it would be better to specify which error(s) you see. – sourcejedi Jul 5 '18 at 18:26
  • I couldn't reproduce this so far again, so it's really strange. – TheDiveO Jul 16 '18 at 21:01

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