network namespaces error

[YG Kumar]

Hi,

I have ubuntu 18.04 server. I have installed iproute2 pkg '4.15.0-2ubuntu1' . When I try creating a network namespace with the command "ip netns add test", the command hangs and never completes.

-----------
root@b1v:~# uname -a
Linux b1v 4.15.0-45-generic #48-Ubuntu SMP Tue Jan 29 16:28:13 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
root@b1v:~#
-----------

I took a strace and it hangs at a point when the command hangs. I have attached the strace file.

[Tom Reynolds (tomreyn)]

This seems to be an issue with network namespaces, which I assume may point to Linux. This report is about Ubuntu Kylin, a supported Ubuntu flavor.

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1823146

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[YG Kumar (ygk-kmr)]

Hi,

One more observation. We are facing this issue with four of our compute nodes. When I rebooted one of them,
it seems to fix the issue. Nevertheless we dont think this is a viable solution. Hence I will submit the apport file shortly from a defective server.

[YG Kumar (ygk-kmr)]

Hi,

I tried running apport but it seems that it never completes the collection. It is running from a long time.

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]