Hi Dan, here is the output:
Feb 2 18:50:14 prg41-004 kernel: [ 482.151773] unregister_netdevice: waiting for lo (netns ffff8de11803e000) to become free. Usage count = 1 Feb 2 18:50:14 prg41-004 kernel: [ 482.151876] (netns ffff8de11803e000): dst ffff8dd905360300 expires 0 error 0 obsolete 2 refcnt 1 ops ipv4_dst_ops+0x0/0xc0 creator rt_dst_alloc+0x54/0xe0 It keeps to be output every 10s for over 500s now. I hope it helps. Jirka Horky -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1711407 Title: unregister_netdevice: waiting for lo to become free Status in linux package in Ubuntu: In Progress Status in linux source package in Trusty: In Progress Status in linux source package in Xenial: In Progress Status in linux source package in Zesty: In Progress Status in linux source package in Artful: In Progress Status in linux source package in Bionic: In Progress Bug description: This is a "continuation" of bug 1403152, as that bug has been marked "fix released" and recent reports of failure may (or may not) be a new bug. Any further reports of the problem should please be reported here instead of that bug. -- [Impact] When shutting down and starting containers the container network namespace may experience a dst reference counting leak which results in this message repeated in the logs: unregister_netdevice: waiting for lo to become free. Usage count = 1 This can cause issues when trying to create net network namespace and thus block a user from creating new containers. [Test Case] See comment 16, reproducer provided at https://github.com/fho/docker- samba-loop To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1711407/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
