I built an Artful test kernel with commit f51048c3e07b. The test kernel can be
downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1704102/
Can you test this kernel and see if it resolves this bug?
Also, what other releases require this commit?
** Changed in: linux (Ubuntu)
Status: Triaged => In Progress
** Changed in: linux (Ubuntu)
Assignee: (unassigned) => Joseph Salisbury (jsalisbury)
** Also affects: linux (Ubuntu Artful)
Importance: Medium
Assignee: Joseph Salisbury (jsalisbury)
Status: In Progress
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https://bugs.launchpad.net/bugs/1704102
Title:
bonding: stack dump when unregistering a netdev
Status in linux package in Ubuntu:
In Progress
Status in linux source package in Artful:
In Progress
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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