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[Andy Whitcroft <apw@xxxxxxxxxxxxx>]

This bug was nominated against a series that is no longer supported, ie
yakkety.  The bug task representing the yakkety nomination is being
closed as Won't Fix.

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

** Changed in: linux (Ubuntu Yakkety)
       Status: In Progress => Won't Fix

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https://bugs.launchpad.net/bugs/1704102

Title:
  bonding: stack dump when unregistering a netdev

Status in linux package in Ubuntu:
  Fix Committed
Status in linux source package in Xenial:
  In Progress
Status in linux source package in Yakkety:
  Won't Fix
Status in linux source package in Zesty:
  In Progress
Status in linux source package in Artful:
  Fix Committed

Bug description:
  Here is the reproducer:

  ip netns add foo
  ip -n foo link add dummy1 type dummy
  ip -n foo link add dummy2 type dummy
  modprobe bonding
  ip -n foo link add bond1 type bond
  ip -n foo link set dev bond1 down
  ip -n foo addr add 10.10.10.1/24 dev bond1
  ip -n foo link set dev bond1 up
  ip -n foo link set dummy1 master bond1
  ip -n foo link set dummy2 master bond1
  ip -n foo link set bond1 mtu 1540

  # Move slaves to init_net
  ip -n foo link set dummy1 netns 1
  ip -n foo link set dummy2 netns 1

  # idev are still in netns foo for dummy interfaces:
  ip netns exec foo ls /proc/sys/net/ipv4/conf/
  ip netns exec foo ls /proc/net/dev_snmp6/

  ip netns del foo
  dmesg

  The bug has been fixed upstream by this patch:

  f51048c3e07b ("bonding: avoid NETDEV_CHANGEMTU event when
  unregistering slave")

  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/net/bonding?id=f51048c3e07b

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