*** This bug is a duplicate of bug 1882831 ***
    https://bugs.launchpad.net/bugs/1882831

** Tags added: kernel-daily-bug

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https://bugs.launchpad.net/bugs/1881907

Title:
  xfrm interface: fix oops when deleting a x-netns interface

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  [Impact]

  When a netns is removed, it may corrupt x-netns xfrm interfaces that
  have their link part in this netns. It will later trigger an oops when
  those interfaces are removed.

  This problem has been fixed in the upstream commit c95c5f58b35e ("xfrm
  interface: fix oops when deleting a x-netns interface"):
  
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c95c5f58b35e

  [Test Case]

  The steps to reproduce the oops is explained in the commit log of the
  upstream patch.

  [Regression Potential]

  The patch affects only the xfrm interface driver, more precisely, the
  deletion part. Thus, the potential regressions are limited to this
  area.

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